/* roulang page: index */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }

        a:hover,
        a:focus {
            color: var(--color-primary);
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-title);
            line-height: 1.35;
            margin: 0 0 16px 0;
            color: var(--color-text);
            font-weight: 700;
        }

        h1 {
            font-size: 42px;
            line-height: 1.25;
            margin-bottom: 24px;
        }

        h2 {
            font-size: 30px;
            line-height: 1.35;
            margin-bottom: 20px;
        }

        h3 {
            font-size: 22px;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        p {
            margin: 0 0 16px 0;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #10141B;
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Button styles */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }

        .btn-primary:disabled,
        .btn-primary.disabled {
            background: #4A515E;
            border-color: #4A515E;
            color: #8A93A5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .btn-secondary:active {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-with-arrow {
            gap: 6px;
        }

        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* Card base */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .card-hover:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        /* Badge / Tag */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 3px 12px;
            line-height: 1.6;
            letter-spacing: 0.03em;
        }

        .badge-primary {
            background: rgba(255, 78, 26, 0.12);
            color: var(--color-primary);
            border: 1px solid rgba(255, 78, 26, 0.3);
        }

        .badge-accent {
            background: rgba(245, 166, 35, 0.12);
            color: var(--color-accent);
            border: 1px solid rgba(245, 166, 35, 0.3);
        }

        .badge-purple {
            background: rgba(123, 63, 242, 0.12);
            color: var(--color-accent-2);
            border: 1px solid rgba(123, 63, 242, 0.3);
        }

        .badge-success {
            background: rgba(52, 199, 123, 0.12);
            color: #34C77B;
            border: 1px solid rgba(52, 199, 123, 0.3);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .tag:hover {
            color: var(--color-primary);
            border-color: rgba(255, 78, 26, 0.4);
            background: rgba(255, 78, 26, 0.05);
        }

        /* Header / Navigation */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 15, 20, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            overflow: hidden;
        }

        #site-header.scrolled .brand-bar {
            height: 0;
            padding-top: 0;
            padding-bottom: 0;
            opacity: 0;
            pointer-events: none;
        }

        .channel-bar {
            display: flex;
            align-items: center;
            height: 48px;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        #site-header.scrolled .channel-bar {
            height: 60px;
            border-top: none;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #0D0F14;
            font-weight: 800;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            font-family: var(--font-title);
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 1 320px;
            margin: 0 24px;
        }

        .nav-search input {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            padding: 8px 14px;
            font-size: 14px;
            width: 100%;
            transition: all 0.3s ease;
        }

        .nav-search input::placeholder {
            color: var(--color-text-muted);
        }

        .nav-search input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            outline: none;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-auth a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .nav-auth a:hover {
            color: var(--color-primary);
        }

        .nav-auth .divider {
            width: 1px;
            height: 20px;
            background: var(--color-border);
        }

        .nav-channels {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex: 1;
        }

        .nav-channels > li {
            position: relative;
            margin: 0;
        }

        .nav-channels > li > a {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .nav-channels > li > a:hover,
        .nav-channels > li > a:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-channels > li > a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.08);
            font-weight: 600;
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card-hover);
            z-index: 50;
            list-style: none;
            margin: 0;
        }

        .nav-channels > li:hover .nav-dropdown,
        .nav-channels > li:focus-within .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown a {
            display: block;
            padding: 10px 14px;
            font-size: 13px;
            color: var(--color-text-secondary);
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .nav-dropdown a:hover {
            background: rgba(255, 78, 26, 0.08);
            color: var(--color-primary);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--color-text);
            font-size: 20px;
            transition: background 0.3s ease;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-nav {
            display: none;
            background: var(--color-bg-elevated);
            border-top: 1px solid var(--color-border);
            padding: 12px 24px 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .mobile-nav.open {
            max-height: 600px;
            padding-top: 16px;
            padding-bottom: 24px;
        }

        .mobile-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-nav li a {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            color: var(--color-text-secondary);
            text-decoration: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .mobile-nav li a:hover,
        .mobile-nav li a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
        }

        /* Hero */
        .hero {
            padding: 160px 0 100px;
            position: relative;
            background-image: url('/assets/images/a76e6290329c3338.jpg');
            background-size: cover;
            background-position: center;
            min-height: 680px;
            display: flex;
            align-items: center;
            margin-top: 116px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 15, 20, 0.6) 0%, rgba(13, 15, 20, 0.88) 60%, rgba(13, 15, 20, 0.95) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 46px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.9;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 640px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-value {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.05em;
        }

        /* S02 - Feature Grid with asymmetric layout */
        .feature-asym-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }

        .feature-large-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 360px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .feature-large-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .feature-large-card img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .feature-large-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 15, 20, 0.3) 0%, rgba(13, 15, 20, 0.9) 100%);
            z-index: 1;
        }

        .feature-large-card .content {
            position: relative;
            z-index: 2;
            padding: 32px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }

        .feature-large-card h3 {
            font-size: 24px;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .feature-large-card p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            line-height: 1.7;
        }

        .feature-small-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .feature-small-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .feature-small-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .feature-small-card .icon-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .feature-small-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .feature-small-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin: 0;
        }

        .feature-row-bottom {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .feature-mini-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all 0.3s ease;
        }

        .feature-mini-card:hover {
            border-color: rgba(255, 78, 26, 0.35);
            background: rgba(255, 78, 26, 0.04);
        }

        .feature-mini-card .text {
            display: flex;
            flex-direction: column;
        }

        .feature-mini-card .text strong {
            font-size: 14px;
            color: var(--color-text);
        }

        .feature-mini-card .text span {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* S03 - Scenario horizontal scroll */
        .scenario-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 24px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .scenario-track::-webkit-scrollbar {
            height: 6px;
        }

        .scenario-track::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.03);
            border-radius: 3px;
        }

        .scenario-track::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 3px;
        }

        .scenario-card {
            flex: 0 0 320px;
            scroll-snap-align: start;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .scenario-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .scenario-card .scenario-icon {
            font-size: 24px;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .scenario-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .scenario-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* S04 - Screenshot / Demo */
        .demo-showcase {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
            align-items: stretch;
        }

        .demo-main-frame {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            min-height: 380px;
            position: relative;
        }

        .demo-main-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 380px;
        }

        .demo-side-panel {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .demo-side-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all 0.3s ease;
            flex: 1;
        }

        .demo-side-item:hover {
            border-color: rgba(255, 78, 26, 0.35);
        }

        .demo-side-item .num {
            font-family: var(--font-mono);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            min-width: 28px;
        }

        .demo-side-item .info h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 4px;
        }

        .demo-side-item .info p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* S05 - Success cases */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .case-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .case-card .case-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .case-card .case-metric {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 8px;
            line-height: 1.2;
        }

        .case-card .case-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .case-card .case-footer {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* S06 - Pricing */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .pricing-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .pricing-card.featured {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-card);
        }

        .pricing-card .recommend-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--color-primary);
            color: #0D0F14;
            font-size: 12px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
        }

        .pricing-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }

        .pricing-price {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.2;
        }

        .pricing-price .currency {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-secondary);
        }

        .pricing-period {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }

        .pricing-features {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
            flex: 1;
        }

        .pricing-features li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }

        .pricing-features li i {
            color: var(--color-primary);
            margin-top: 4px;
            font-size: 13px;
            flex-shrink: 0;
        }

        /* S07 - Testimonial masonry */
        .testimonial-masonry {
            columns: 3;
            column-gap: 20px;
        }

        .testimonial-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            break-inside: avoid;
            margin-bottom: 20px;
            display: inline-block;
            width: 100%;
        }

        .testimonial-card:hover {
            border-color: rgba(255, 78, 26, 0.35);
            box-shadow: var(--shadow-card-hover);
        }

        .testimonial-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            object-fit: cover;
            background: var(--color-bg-elevated);
            border: 2px solid var(--color-border);
        }

        .testimonial-info {
            flex: 1;
        }

        .testimonial-info strong {
            display: block;
            font-size: 14px;
            color: var(--color-text);
        }

        .testimonial-info span {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .testimonial-stars {
            color: var(--color-accent);
            font-size: 13px;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin: 0 0 12px;
        }

        .testimonial-date {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* S08 - Rating summary */
        .rating-summary-panel {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
            align-items: center;
        }

        .rating-big-score {
            text-align: center;
        }

        .rating-big-score .score {
            font-family: var(--font-mono);
            font-size: 72px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            display: block;
        }

        .rating-big-score .stars {
            font-size: 18px;
            color: var(--color-accent);
            margin: 8px 0;
            letter-spacing: 4px;
        }

        .rating-big-score .based-on {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .rating-bars {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .rating-bar-row {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .rating-bar-row .label {
            min-width: 50px;
            text-align: right;
        }

        .rating-bar-row .bar-bg {
            flex: 1;
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
        }

        .rating-bar-row .bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 4px;
            transition: width 1s ease;
        }

        .rating-bar-row .count {
            min-width: 40px;
            font-family: var(--font-mono);
            color: var(--color-text-muted);
        }

        .rating-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        /* S09 - News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .news-item:hover {
            border-color: rgba(255, 78, 26, 0.35);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .news-date-block {
            flex-shrink: 0;
            text-align: center;
            background: rgba(255, 78, 26, 0.08);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: 8px;
            padding: 8px 14px;
            min-width: 64px;
        }

        .news-date-block .day {
            display: block;
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

        .news-date-block .month {
            display: block;
            font-size: 11px;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
        }

        .news-content {
            flex: 1;
        }

        .news-content h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 6px;
            line-height: 1.5;
        }

        .news-content p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 10px;
        }

        .news-readmore {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .news-readmore:hover {
            color: var(--color-primary);
            gap: 10px;
        }

        /* S10 - Brand intro */
        .brand-intro-section {
            background: linear-gradient(145deg, rgba(255, 78, 26, 0.04) 0%, rgba(13, 15, 20, 0.9) 100%);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 40px 36px;
        }

        .brand-intro-section h2 {
            margin-bottom: 16px;
        }

        .brand-intro-section p {
            font-size: 15px;
            line-height: 1.95;
            color: var(--color-text-secondary);
        }

        /* S11 - FAQ Accordion */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            background: var(--color-bg-card);
        }

        .faq-accordion .accordion-item {
            border-bottom: 1px solid var(--color-border);
            margin: 0;
        }

        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            line-height: 1.6;
        }

        .faq-accordion .accordion-title:hover {
            background: rgba(255, 78, 26, 0.04);
            color: var(--color-primary);
        }

        .faq-accordion .accordion-title .faq-icon {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-item.is-active .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-accordion .accordion-content {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            display: none;
        }

        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }

        .faq-accordion .accordion-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }

        /* S12 - Security / compliance */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .security-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all 0.3s ease;
        }

        .security-item:hover {
            border-color: rgba(255, 78, 26, 0.3);
            background: rgba(255, 78, 26, 0.04);
        }

        .security-item .sec-icon {
            font-size: 22px;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .security-item .sec-text strong {
            display: block;
            font-size: 14px;
            color: var(--color-text);
            margin-bottom: 2px;
        }

        .security-item .sec-text span {
            font-size: 12px;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* S13 - Resource downloads */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .resource-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
        }

        .resource-card:hover {
            border-color: rgba(255, 78, 26, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .resource-card img {
            width: 140px;
            min-height: 160px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .resource-card .resource-info {
            padding: 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .resource-card .resource-info h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 6px;
        }

        .resource-card .resource-info p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin: 0 0 12px;
        }

        /* S14 - CTA */
        .cta-final {
            position: relative;
            background-image: url('/assets/images/728f077406aaeb11.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .cta-final::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 20, 0.85) 0%, rgba(13, 15, 20, 0.6) 100%);
        }

        .cta-final .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-final h2 {
            font-size: 32px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-final p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .cta-final .cta-btn-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background: #0A0C10;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .footer-logo .nav-logo-icon {
            width: 28px;
            height: 28px;
            font-size: 14px;
        }

        .footer-brand .footer-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.75;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            padding: 10px 14px;
            font-size: 13px;
            transition: all 0.3s ease;
            min-width: 0;
        }

        .footer-subscribe-form input::placeholder {
            color: var(--color-text-muted);
        }

        .footer-subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            outline: none;
        }

        .footer-subscribe-form .btn {
            padding: 10px 16px;
            font-size: 13px;
            white-space: nowrap;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .footer-bottom a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        .footer-bottom .copyright {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .feature-asym-grid {
                grid-template-columns: 1fr;
            }
            .feature-small-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-row-bottom {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-masonry {
                columns: 2;
            }
            .rating-summary-panel {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .demo-showcase {
                grid-template-columns: 1fr;
            }
            .hero {
                margin-top: 112px;
                padding: 140px 0 80px;
                min-height: 560px;
            }
            .hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 768px) {
            .brand-bar {
                height: 56px;
                padding: 0 16px;
            }
            .channel-bar {
                height: 52px;
                padding: 0 16px;
            }
            #site-header.scrolled .channel-bar {
                height: 52px;
            }
            .nav-search {
                display: none;
            }
            .nav-auth {
                display: none;
            }
            .nav-channels {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: block;
            }
            .hero {
                margin-top: 56px;
                padding: 100px 0 60px;
                min-height: 480px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-value {
                font-size: 22px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            h2 {
                font-size: 24px;
            }
            h1 {
                font-size: 30px;
            }
            .feature-small-grid {
                grid-template-columns: 1fr;
            }
            .feature-row-bottom {
                grid-template-columns: 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-masonry {
                columns: 1;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .resource-card {
                flex-direction: column;
            }
            .resource-card img {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .news-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .news-date-block {
                min-width: auto;
                display: inline-flex;
                gap: 8px;
                align-items: baseline;
            }
            .news-date-block .day {
                font-size: 18px;
            }
            .brand-intro-section {
                padding: 24px 20px;
            }
            .rating-big-score .score {
                font-size: 52px;
            }
            .scenario-card {
                flex: 0 0 280px;
            }
            .cta-final {
                padding: 48px 16px;
                border-radius: 16px;
            }
            .cta-final h2 {
                font-size: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .faq-accordion .accordion-title {
                padding: 14px 18px;
                font-size: 14px;
            }
            .faq-accordion .accordion-content {
                padding: 0 18px 16px;
            }
            .demo-main-frame,
            .demo-main-frame img {
                min-height: 240px;
            }
            .pricing-price {
                font-size: 32px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 14px;
                line-height: 1.75;
            }
            .btn {
                font-size: 14px;
                padding: 10px 18px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 15px;
            }
            .hero-cta-row {
                flex-direction: column;
                gap: 12px;
            }
            .hero-cta-row .btn {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 21px;
            }
            .testimonial-card {
                padding: 16px;
            }
            .pricing-card {
                padding: 20px 16px;
            }
            .rating-summary-panel {
                padding: 20px 16px;
            }
            .feature-large-card {
                min-height: 260px;
            }
            .feature-large-card .content {
                padding: 20px;
            }
            .scenario-card {
                padding: 18px;
            }
            .security-item {
                padding: 14px;
            }
            .footer-subscribe-form {
                flex-direction: column;
            }
            .footer-subscribe-form .btn {
                width: 100%;
            }
            .nav-logo-text {
                font-size: 17px;
            }
        }

/* roulang page: category2 */
:root {
      --color-primary: #FF4E1A;
      --color-primary-hover: #FF6B3D;
      --color-accent: #F5A623;
      --color-accent-2: #7B3FF2;
      --color-bg: #0D0F14;
      --color-bg-card: #171B24;
      --color-bg-elevated: #1E2430;
      --color-text: #F5F6FA;
      --color-text-secondary: #C2C8D2;
      --color-text-muted: #8A93A5;
      --color-border: rgba(255, 255, 255, 0.08);
      --color-border-active: rgba(255, 78, 26, 0.6);
      --radius-card: 16px;
      --radius-btn: 10px;
      --radius-pill: 999px;
      --radius-sm: 8px;
      --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
      --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
      --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
      --section-padding: 72px 0;
      --container-max: 1200px;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.8;
      color: var(--color-text);
      background-color: var(--color-bg);
      margin: 0;
      padding: 0;
    }

    a {
      color: var(--color-accent);
      text-decoration: none;
      transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }

    a:hover,
    a:focus {
      color: var(--color-primary);
    }

    a:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button,
    input,
    select,
    textarea {
      font-family: var(--font-body);
      font-size: 16px;
    }

    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }

    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-title);
      color: var(--color-text);
      line-height: 1.35;
      margin-top: 0;
      margin-bottom: 12px;
    }

    h1 { font-size: 40px; font-weight: 700; }
    h2 { font-size: 30px; font-weight: 700; }
    h3 { font-size: 22px; font-weight: 600; }
    h4 { font-size: 18px; font-weight: 600; }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: var(--section-padding);
      position: relative;
    }

    .section-alt {
      background-color: #10141B;
    }

    .section-tight {
      padding: 48px 0;
    }

    .section-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.1);
      border: 1px solid rgba(255, 78, 26, 0.2);
      border-radius: var(--radius-pill);
      padding: 4px 14px;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--color-text);
    }

    .section-desc {
      font-size: 16px;
      color: var(--color-text-secondary);
      max-width: 720px;
      line-height: 1.85;
      margin-bottom: 32px;
    }

    .text-primary { color: var(--color-primary); }
    .text-accent { color: var(--color-accent); }
    .text-secondary { color: var(--color-text-secondary); }
    .text-muted { color: var(--color-text-muted); }

    /* Button styles */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 15px;
      border-radius: var(--radius-btn);
      padding: 12px 24px;
      cursor: pointer;
      text-decoration: none;
      transition: all 0.3s ease;
      border: 1px solid transparent;
      line-height: 1.5;
    }

    .btn-primary {
      background: var(--color-primary);
      color: #0D0F14;
      border-color: var(--color-primary);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--color-primary-hover);
      border-color: var(--color-primary-hover);
      color: #0D0F14;
      box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
      transform: translateY(-1px);
    }

    .btn-primary:active {
      background: #E04417;
      border-color: #E04417;
      box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
      transform: translateY(0);
    }

    .btn-primary:disabled,
    .btn-primary.disabled {
      background: #4A515E;
      border-color: #4A515E;
      color: #8A93A5;
      cursor: not-allowed;
      box-shadow: none;
      transform: none;
    }

    .btn-secondary {
      background: transparent;
      color: var(--color-text);
      border-color: rgba(255, 255, 255, 0.25);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.05);
      box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
    }

    .btn-secondary:active {
      border-color: var(--color-primary);
      background: rgba(255, 78, 26, 0.1);
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 13px;
      border-radius: 8px;
    }

    .btn-lg {
      padding: 16px 32px;
      font-size: 17px;
      border-radius: 12px;
    }

    .btn-with-arrow {
      gap: 6px;
    }

    .btn-with-arrow i {
      transition: transform 0.3s ease;
    }

    .btn-with-arrow:hover i {
      transform: translateX(4px);
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background-color: rgba(13, 15, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      transition: all 0.35s ease;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    }

    .brand-row {
      height: 72px;
      background: rgba(13, 15, 20, 0.6);
      transition: all 0.35s ease;
      overflow: hidden;
    }

    .brand-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
      gap: 24px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--color-text);
      font-weight: 700;
      font-size: 22px;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .brand-logo:hover,
    .brand-logo:focus {
      color: var(--color-primary);
    }

    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      color: #0D0F14;
      border-radius: 8px;
      font-size: 18px;
    }

    .brand-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-btn);
      padding: 4px 8px 4px 14px;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .search-box:focus-within {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.15);
    }

    .search-box input {
      background: transparent;
      border: none;
      outline: none;
      color: var(--color-text);
      font-size: 14px;
      width: 160px;
      padding: 6px 4px;
    }

    .search-box input::placeholder {
      color: var(--color-text-muted);
    }

    .search-box button {
      background: var(--color-primary);
      border: none;
      color: #0D0F14;
      width: 32px;
      height: 32px;
      border-radius: 6px;
      cursor: pointer;
      transition: background 0.25s ease;
    }

    .search-box button:hover {
      background: var(--color-primary-hover);
    }

    .channel-row {
      height: 48px;
      background: rgba(23, 27, 36, 0.7);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      transition: all 0.35s ease;
    }

    .nav-inner {
      height: 100%;
    }

    .nav-channels {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      height: 100%;
      gap: 8px;
    }

    .nav-channels > li {
      position: relative;
      height: 100%;
      display: flex;
      align-items: center;
    }

    .nav-channels > li > a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-text-secondary);
      border-radius: var(--radius-sm);
      white-space: nowrap;
      transition: all 0.25s ease;
    }

    .nav-channels > li > a:hover,
    .nav-channels > li > a:focus {
      color: var(--color-text);
      background: rgba(255, 255, 255, 0.05);
    }

    .nav-channels > li > a.active {
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.1);
    }

    .nav-channels > li > a.active::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 16px;
      right: 16px;
      height: 3px;
      background: var(--color-primary);
      border-radius: 3px 3px 0 0;
    }

    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 16px;
      min-width: 180px;
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      border-radius: 12px;
      padding: 8px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all 0.25s ease;
      list-style: none;
      margin: 0;
      z-index: 50;
    }

    .nav-channels > li:hover .dropdown-menu,
    .nav-channels > li:focus-within .dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .dropdown-menu li a {
      display: block;
      padding: 8px 14px;
      font-size: 13px;
      color: var(--color-text-secondary);
      border-radius: 6px;
      transition: all 0.2s ease;
    }

    .dropdown-menu li a:hover {
      background: rgba(255, 78, 26, 0.1);
      color: var(--color-primary);
    }

    .hamburger {
      display: none;
      background: transparent;
      border: 1px solid var(--color-border);
      color: var(--color-text);
      width: 42px;
      height: 42px;
      border-radius: 8px;
      font-size: 20px;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .hamburger:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }

    .site-header.scrolled .brand-row {
      height: 0;
      opacity: 0;
      padding-top: 0;
      padding-bottom: 0;
      overflow: hidden;
    }

    .site-header.scrolled .channel-row {
      height: 56px;
    }

    /* Mobile navigation */
    .mobile-nav {
      display: none;
      background: var(--color-bg-elevated);
      border-top: 1px solid var(--color-border);
      padding: 12px 0;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }

    .mobile-nav.active {
      max-height: 560px;
    }

    .mobile-nav ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .mobile-nav ul li a {
      display: block;
      padding: 10px 24px;
      color: var(--color-text-secondary);
      font-size: 15px;
      font-weight: 600;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .mobile-nav ul li a:hover,
    .mobile-nav ul li a.active {
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.05);
    }

    @media (max-width: 1023px) {
      .brand-row {
        height: 64px;
      }
      .brand-actions .search-box,
      .brand-actions .btn-secondary,
      .brand-actions .btn-primary {
        display: none;
      }
      .hamburger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }
      .channel-row {
        display: none;
      }
      .mobile-nav {
        display: block;
      }
    }

    /* Footer */
    .site-footer {
      background: #0A0C11;
      border-top: 1px solid var(--color-border);
      padding: 48px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 32px;
      padding-bottom: 32px;
    }

    .footer-brand p {
      color: var(--color-text-secondary);
      font-size: 14px;
      line-height: 1.7;
      margin: 16px 0 0;
      max-width: 260px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 20px;
      color: var(--color-text);
    }

    .footer-logo .nav-logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      background: var(--color-primary);
      color: #0D0F14;
      border-radius: 8px;
      font-size: 16px;
    }

    .footer-col h5 {
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-col ul li {
      margin-bottom: 8px;
    }

    .footer-col ul li a {
      color: var(--color-text-secondary);
      font-size: 14px;
      transition: color 0.2s ease;
    }

    .footer-col ul li a:hover {
      color: var(--color-primary);
    }

    .footer-subscribe p {
      color: var(--color-text-secondary);
      font-size: 14px;
      margin: 0 0 12px;
    }

    .footer-subscribe-form {
      display: flex;
      gap: 8px;
    }

    .footer-subscribe-form input {
      flex: 1;
      padding: 10px 14px;
      border-radius: var(--radius-btn);
      border: 1px solid var(--color-border);
      background: rgba(255, 255, 255, 0.04);
      color: var(--color-text);
      font-size: 14px;
      outline: none;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .footer-subscribe-form input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.12);
    }

    .footer-bottom {
      border-top: 1px solid var(--color-border);
      padding: 16px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    .copyright {
      color: var(--color-text-muted);
      font-size: 13px;
    }

    .legal-links {
      display: flex;
      gap: 8px;
      align-items: center;
      color: var(--color-text-muted);
      font-size: 13px;
    }

    .legal-links a {
      color: var(--color-text-muted);
    }

    .legal-links a:hover {
      color: var(--color-primary);
    }

    /* Page specific */
    .page-hero {
      padding: 36px 0 12px;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--color-text-muted);
      margin-bottom: 16px;
      flex-wrap: wrap;
    }

    .breadcrumb a {
      color: var(--color-text-muted);
    }

    .breadcrumb a:hover {
      color: var(--color-primary);
    }

    .breadcrumb .separator {
      opacity: 0.5;
    }

    .page-hero h1 {
      font-size: 38px;
      margin-bottom: 8px;
    }

    .page-hero .lead {
      font-size: 16px;
      color: var(--color-text-secondary);
      max-width: 760px;
      line-height: 1.85;
    }

    .filter-bar {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: 14px;
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 32px;
    }

    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .filter-tag {
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      background: transparent;
      border: 1px solid var(--color-border);
      color: var(--color-text-secondary);
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .filter-tag:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.05);
    }

    .filter-tag.active {
      background: var(--color-primary);
      color: #0D0F14;
      border-color: var(--color-primary);
    }

    .sort-select {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--color-text-secondary);
      font-size: 14px;
      white-space: nowrap;
    }

    .sort-select select {
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      color: var(--color-text);
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      cursor: pointer;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .sort-select select:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.12);
    }

    .guide-card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .guide-card:hover {
      transform: translateY(-4px);
      border-color: var(--color-border-active);
      box-shadow: var(--shadow-card-hover);
    }

    .guide-card-img {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #0A0C11;
    }

    .guide-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .guide-card:hover .guide-card-img img {
      transform: scale(1.04);
    }

    .guide-card-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(13, 15, 20, 0.85);
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255, 78, 26, 0.4);
      backdrop-filter: blur(4px);
    }

    .guide-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .guide-card-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.5;
      margin-bottom: 10px;
      color: var(--color-text);
    }

    .guide-card-title a {
      color: var(--color-text);
      transition: color 0.25s ease;
    }

    .guide-card-title a:hover {
      color: var(--color-primary);
    }

    .guide-card-summary {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 14px;
    }

    .guide-card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
    }

    .guide-card-date {
      font-size: 12px;
      color: var(--color-text-muted);
    }

    .btn-read-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      font-size: 13px;
      color: var(--color-primary);
      background: transparent;
      border: none;
      padding: 0;
      cursor: pointer;
      transition: gap 0.25s ease;
    }

    .btn-read-more:hover {
      gap: 10px;
    }

    .popular-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .popular-item:last-child {
      border-bottom: none;
    }

    .popular-rank {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(255, 78, 26, 0.1);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }

    .popular-info {
      flex: 1;
    }

    .popular-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--color-text);
      line-height: 1.4;
      margin-bottom: 4px;
    }

    .popular-stats {
      font-size: 12px;
      color: var(--color-text-muted);
      display: flex;
      gap: 12px;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag-cloud a,
    .tag-cloud span {
      display: inline-block;
      padding: 8px 16px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--color-border);
      color: var(--color-text-secondary);
      font-size: 13px;
      font-weight: 600;
      transition: all 0.25s ease;
    }

    .tag-cloud a:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: rgba(255, 78, 26, 0.08);
    }

    .subscribe-section {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 28px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }

    .subscribe-info h3 {
      margin-bottom: 6px;
    }

    .subscribe-info p {
      color: var(--color-text-secondary);
      margin: 0;
      font-size: 14px;
    }

    .subscribe-form {
      display: flex;
      gap: 8px;
      flex: 1;
      max-width: 480px;
      min-width: 260px;
    }

    .subscribe-form input {
      flex: 1;
      padding: 10px 16px;
      border-radius: var(--radius-btn);
      border: 1px solid var(--color-border);
      background: rgba(255, 255, 255, 0.04);
      color: var(--color-text);
      font-size: 14px;
      outline: none;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .subscribe-form input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.12);
    }

    .topic-card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-card);
      height: 100%;
    }

    .topic-card:hover {
      transform: translateY(-4px);
      border-color: var(--color-border-active);
      box-shadow: var(--shadow-card-hover);
    }

    .topic-card-img {
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

    .topic-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .topic-card-body {
      padding: 20px;
    }

    .topic-card-body h4 {
      margin-bottom: 8px;
    }

    .topic-card-body p {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
    }

    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 26px; }
      .section { padding: 48px 0; }
      .container { padding: 0 16px; }
      .filter-bar {
        flex-direction: column;
        align-items: stretch;
      }
      .sort-select {
        justify-content: flex-end;
      }
      .subscribe-section {
        flex-direction: column;
        align-items: flex-start;
      }
      .subscribe-form {
        width: 100%;
        max-width: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 520px) {
      h1 { font-size: 28px; }
      .page-hero h1 { font-size: 28px; }
      .filter-tag { font-size: 12px; padding: 5px 10px; }
      .guide-card-title { font-size: 16px; }
      .brand-logo { font-size: 18px; }
      .logo-icon { width: 30px; height: 30px; font-size: 15px; }
    }

/* roulang page: category1 */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }

        a:hover,
        a:focus {
            color: var(--color-primary);
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #10141B;
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
            line-height: 1.35;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        /* Button Styles */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }

        .btn-primary:disabled,
        .btn-primary.disabled {
            background: #4A515E;
            border-color: #4A515E;
            color: #8A93A5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .btn-secondary:active {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-with-arrow {
            gap: 6px;
        }

        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 15, 20, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow 0.35s ease;
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            transition: height 0.35s ease, opacity 0.3s ease, transform 0.3s ease;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--color-text);
        }

        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #0D0F14;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.03em;
        }

        .header-brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            gap: 8px;
            transition: border-color 0.3s ease, background-color 0.3s ease;
        }

        .header-search i {
            color: var(--color-text-muted);
            font-size: 14px;
        }

        .header-search input {
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 13px;
            width: 160px;
            outline: none;
        }

        .header-search input::placeholder {
            color: var(--color-text-muted);
        }

        .header-search:focus-within {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
        }

        .header-auth {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .header-auth a {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 14px;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
        }

        .header-auth a:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }

        .header-auth .auth-register {
            background: var(--color-primary);
            color: #0D0F14;
        }

        .header-auth .auth-register:hover {
            background: var(--color-primary-hover);
            color: #0D0F14;
        }

        .header-channel-row {
            height: 48px;
            display: flex;
            align-items: center;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            transition: height 0.35s ease;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .nav-channels::-webkit-scrollbar {
            display: none;
        }

        .nav-channels>li {
            position: relative;
            flex-shrink: 0;
        }

        .nav-channels>li>a {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .nav-channels>li>a:hover,
        .nav-channels>li>a:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-channels>li>a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            font-weight: 600;
        }

        .nav-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: #1A1F2A;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 8px 0;
            list-style: none;
            margin: 4px 0 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card-hover);
            z-index: 1001;
        }

        .nav-channels>li:hover .nav-dropdown,
        .nav-channels>li:focus-within .nav-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-dropdown li a {
            display: block;
            padding: 8px 20px;
            font-size: 13px;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        .nav-dropdown li a:hover {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
            padding-left: 24px;
        }

        .mobile-nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            color: var(--color-text);
            font-size: 20px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .mobile-nav-toggle:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .mobile-nav-panel {
            display: none;
            background: #0D0F14;
            border-bottom: 1px solid var(--color-border);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .mobile-nav-panel.open {
            max-height: 500px;
        }

        .mobile-nav-panel ul {
            list-style: none;
            margin: 0;
            padding: 16px 24px;
        }

        .mobile-nav-panel li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .mobile-nav-panel li:last-child {
            border-bottom: none;
        }

        .mobile-nav-panel li a {
            color: var(--color-text-secondary);
            font-size: 15px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-nav-panel li a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-nav-panel li a:hover {
            color: var(--color-text);
        }

        .site-header.scrolled .header-brand-row {
            height: 0;
            opacity: 0;
            overflow: hidden;
            padding: 0 24px;
        }

        .site-header.scrolled .header-channel-row {
            height: 60px;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .breadcrumb-nav a:hover {
            color: var(--color-primary);
        }

        .breadcrumb-nav .separator {
            color: var(--color-text-muted);
            font-size: 12px;
        }

        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Category Header */
        .category-header {
            padding: 140px 0 48px;
            background: linear-gradient(135deg, rgba(255, 78, 26, 0.08) 0%, rgba(13, 15, 20, 0) 40%);
            border-bottom: 1px solid var(--color-border);
        }

        .category-header-title {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .category-header-desc {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 8px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
            flex-shrink: 0;
        }

        .filter-tag {
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            border: 1px solid var(--color-border);
            background: transparent;
            color: var(--color-text-secondary);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: rgba(255, 78, 26, 0.4);
            color: var(--color-text);
            background: rgba(255, 78, 26, 0.06);
        }

        .filter-tag.active {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }

        .filter-select {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            border-radius: var(--radius-btn);
            padding: 7px 14px;
            font-size: 13px;
            cursor: pointer;
            transition: border-color 0.3s ease;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23C2C8D2' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 32px;
        }

        .filter-select:hover,
        .filter-select:focus {
            border-color: var(--color-primary);
            outline: none;
        }

        /* Article Card Grid */
        .article-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-active);
        }

        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.04);
        }

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(13, 15, 20, 0.78);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(245, 166, 35, 0.3);
        }

        .article-card-content {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 10px;
        }

        .article-card-meta .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-meta .meta-tag {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-weight: 500;
        }

        .article-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 10px;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .article-card-title a {
            color: inherit;
            text-decoration: none;
        }

        .article-card-title a:hover {
            color: var(--color-primary);
        }

        .article-card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .article-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            transition: all 0.3s ease;
            margin-top: auto;
        }

        .article-card-link i {
            transition: transform 0.3s ease;
        }

        .article-card-link:hover {
            color: var(--color-primary-hover);
        }

        .article-card-link:hover i {
            transform: translateX(4px);
        }

        /* Load More Link */
        .load-more-wrapper {
            text-align: center;
            margin-top: 28px;
        }

        /* Hot Articles */
        .hot-articles-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .hot-article-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: all 0.3s ease;
        }

        .hot-article-item:last-child {
            border-bottom: none;
        }

        .hot-article-rank {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-text-muted);
            font-family: var(--font-mono);
            min-width: 36px;
            text-align: center;
            flex-shrink: 0;
        }

        .hot-article-rank.top1 {
            color: var(--color-primary);
        }

        .hot-article-rank.top2 {
            color: var(--color-accent);
        }

        .hot-article-rank.top3 {
            color: var(--color-accent-2);
        }

        .hot-article-info {
            flex: 1;
        }

        .hot-article-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
            text-decoration: none;
            display: block;
            transition: color 0.3s ease;
        }

        .hot-article-title:hover {
            color: var(--color-primary);
        }

        .hot-article-stat {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: transparent;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .tag-cloud-link:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
        }

        /* Subscribe CTA */
        .subscribe-card {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border-active);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            justify-content: space-between;
        }

        .subscribe-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .subscribe-info p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex: 1;
            max-width: 420px;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            background: #0D0F14;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 11px 16px;
            color: var(--color-text);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .subscribe-form input[type="email"]::placeholder {
            color: var(--color-text-muted);
        }

        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
        }

        /* Resource Cards */
        .resource-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px;
            transition: all 0.35s ease;
        }

        .resource-card:hover {
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .resource-card-image {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .resource-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .resource-card-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 4px;
        }

        .resource-card-info p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin: 0 0 6px;
            line-height: 1.6;
        }

        .resource-card-link {
            font-size: 13px;
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 500;
        }

        .resource-card-link:hover {
            color: var(--color-primary-hover);
        }

        /* Footer */
        .site-footer {
            background: #0A0C10;
            border-top: 1px solid var(--color-border);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            max-width: 320px;
            margin: 0;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .footer-subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-subscribe-form input[type="email"] {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 10px 14px;
            color: var(--color-text);
            font-size: 13px;
            transition: border-color 0.3s ease;
            width: 100%;
        }

        .footer-subscribe-form input[type="email"]::placeholder {
            color: var(--color-text-muted);
        }

        .footer-subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.12);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 18px 0;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom .legal-links a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-bottom .legal-links a:hover {
            color: var(--color-primary);
        }

        .footer-bottom .legal-links span {
            color: var(--color-text-muted);
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .header-channel-row {
                padding: 0 16px;
            }
            .header-brand-row {
                padding: 0 16px;
            }
            .container {
                padding: 0 20px;
            }
            .article-card-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-brand-row {
                height: 56px;
            }
            .header-channel-row {
                display: none;
            }
            .mobile-nav-toggle {
                display: inline-flex;
            }
            .mobile-nav-panel {
                display: block;
            }
            .site-header.scrolled .header-brand-row {
                height: 56px;
                opacity: 1;
                overflow: visible;
            }
            .site-header.scrolled .header-channel-row {
                height: auto;
                display: none;
            }
            .category-header {
                padding: 110px 0 36px;
            }
            .category-header-title {
                font-size: 30px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subscribe-card {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                max-width: 100%;
                width: 100%;
            }
            .article-card-grid {
                grid-template-columns: 1fr;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .hot-article-rank {
                font-size: 20px;
                min-width: 28px;
            }
            .resource-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .resource-card-image {
                width: 100%;
                height: 140px;
            }
        }

        @media (max-width: 520px) {
            .header-brand-row {
                padding: 0 12px;
                height: 52px;
            }
            .nav-logo-text {
                font-size: 17px;
            }
            .header-search {
                display: none;
            }
            .header-auth .auth-login {
                display: none;
            }
            .container {
                padding: 0 16px;
            }
            .category-header-title {
                font-size: 26px;
            }
            .category-header-desc {
                font-size: 15px;
            }
            .section {
                padding: 40px 0;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .filter-tag {
                padding: 5px 12px;
                font-size: 12px;
            }
            .article-card-content {
                padding: 16px 18px;
            }
            .article-card-title {
                font-size: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: var(--color-primary);
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }
        .section-alt {
            background-color: #10141B;
        }
        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        /* Button styles */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }
        .btn-primary:disabled,
        .btn-primary.disabled {
            background: #4A515E;
            border-color: #4A515E;
            color: #8A93A5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }
        .btn-secondary:active {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }
        .btn-with-arrow {
            gap: 6px;
        }
        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }
        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 15, 20, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: all 0.35s ease;
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            height: 68px;
            transition: height 0.35s ease, padding 0.35s ease;
        }
        .site-header.scrolled .brand-row {
            height: 0;
            padding: 0 24px;
            overflow: hidden;
            opacity: 0;
        }
        .brand-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #0D0F14;
            border-radius: 10px;
            font-size: 17px;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .brand-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            min-width: 200px;
            transition: border-color 0.25s ease;
        }
        .search-box:focus-within {
            border-color: var(--color-border-active);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.12);
        }
        .search-box input {
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 13px;
            width: 100%;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box i {
            color: var(--color-text-muted);
            font-size: 13px;
        }
        .login-btn {
            font-size: 13px;
            color: var(--color-text-secondary);
            padding: 6px 12px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .login-btn:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .channel-row {
            border-top: 1px solid var(--color-border);
            background: rgba(13, 15, 20, 0.9);
            transition: background 0.35s ease;
        }
        .site-header.scrolled .channel-row {
            background: rgba(13, 15, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        }
        .nav-channels {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            height: 48px;
            flex-wrap: nowrap;
            overflow-x: auto;
        }
        .nav-channels>li {
            position: relative;
            flex-shrink: 0;
        }
        .nav-channels>li>a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-channels>li>a:hover,
        .nav-channels>li>a:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-channels>li>a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            font-weight: 600;
        }
        .nav-channels>li>a i.fa-house {
            font-size: 13px;
        }
        .nav-channels .has-dropdown>a i.fa-chevron-down {
            transition: transform 0.3s ease;
        }
        .nav-channels .has-dropdown:hover>a i.fa-chevron-down {
            transform: rotate(180deg);
        }
        .dropdown-menu {
            list-style: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 8px 0;
            margin: 8px 0 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card-hover);
            z-index: 50;
        }
        .nav-channels .has-dropdown:hover .dropdown-menu,
        .nav-channels .has-dropdown:focus-within .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .dropdown-menu li a {
            display: block;
            padding: 9px 18px;
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: all 0.2s ease;
        }
        .dropdown-menu li a:hover {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }
        .mobile-toggle:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: var(--color-text-muted);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Category H1 area */
        .cat-hero {
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--color-border);
            background: linear-gradient(180deg, rgba(255, 78, 26, 0.05) 0%, transparent 100%);
        }
        .cat-h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cat-intro {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .cat-stats-bar {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .cat-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .cat-stat-item .num {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 18px;
            color: var(--color-accent);
        }

        /* Filter toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 28px;
        }
        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 7px 16px;
            font-size: 13px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            background: transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--color-border-active);
            color: var(--color-text);
        }
        .filter-tag.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #0D0F14;
            font-weight: 600;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .filter-sort select {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            padding: 7px 28px 7px 12px;
            font-size: 13px;
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238A93A5' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            transition: border-color 0.25s ease;
        }
        .filter-sort select:focus {
            border-color: var(--color-border-active);
        }

        /* Tool cards list */
        .tool-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .tool-card {
            display: flex;
            gap: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            padding: 18px;
            transition: all 0.3s ease;
            position: relative;
        }
        .tool-card:hover {
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .tool-card-img {
            flex-shrink: 0;
            width: 260px;
            height: 170px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
        }
        .tool-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tool-card:hover .tool-card-img img {
            transform: scale(1.04);
        }
        .tool-card-img .tag-overlay {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(13, 15, 20, 0.85);
            backdrop-filter: blur(6px);
            color: var(--color-accent);
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(245, 166, 35, 0.35);
        }
        .tool-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .tool-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .tool-card-meta .date {
            font-family: var(--font-mono);
        }
        .tool-card-meta .tag-pill {
            background: rgba(123, 63, 242, 0.15);
            color: #B79BF5;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-size: 11px;
            font-weight: 500;
        }
        .tool-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .tool-card-title a {
            color: var(--color-text);
            transition: color 0.25s ease;
        }
        .tool-card-title a:hover {
            color: var(--color-primary);
        }
        .tool-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .tool-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .tool-card-footer .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: all 0.25s ease;
        }
        .tool-card-footer .read-more:hover {
            color: var(--color-primary-hover);
        }
        .tool-card-footer .read-more i {
            transition: transform 0.3s ease;
            font-size: 11px;
        }
        .tool-card-footer .read-more:hover i {
            transform: translateX(3px);
        }
        .tool-card-stats {
            display: flex;
            gap: 14px;
            font-size: 12px;
            color: var(--color-text-muted);
        }
        .tool-card-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .load-more-wrap {
            text-align: center;
            margin-top: 28px;
        }

        /* Hot tools */
        .hot-tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .hot-tool-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px;
            transition: all 0.3s ease;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .hot-tool-card:hover {
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .hot-tool-rank {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            flex-shrink: 0;
            width: 36px;
        }
        .hot-tool-info {
            flex: 1;
            min-width: 0;
        }
        .hot-tool-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .hot-tool-info h4 a {
            color: var(--color-text);
        }
        .hot-tool-info h4 a:hover {
            color: var(--color-primary);
        }
        .hot-tool-info p {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .hot-tool-info .hot-stats {
            font-size: 12px;
            color: var(--color-accent);
            display: flex;
            gap: 10px;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-pill);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            transition: all 0.25s ease;
        }
        .tag-cloud a:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
            transform: translateY(-2px);
        }

        /* Subscribe CTA */
        .subscribe-inline {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .subscribe-inline .sub-info h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .subscribe-inline .sub-info p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin: 0;
        }
        .subscribe-inline form {
            display: flex;
            gap: 10px;
            flex: 1;
            min-width: 280px;
            max-width: 460px;
        }
        .subscribe-inline input[type="email"] {
            flex: 1;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 10px 16px;
            font-size: 14px;
            color: var(--color-text);
            outline: none;
            transition: all 0.25s ease;
        }
        .subscribe-inline input[type="email"]:focus {
            border-color: var(--color-border-active);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.12);
        }
        .subscribe-inline input[type="email"]::placeholder {
            color: var(--color-text-muted);
        }

        /* Topic cards */
        .topic-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            position: relative;
        }
        .topic-card:hover {
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .topic-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .topic-card:hover .topic-card-img img {
            transform: scale(1.05);
        }
        .topic-card-img .topic-badge {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background: rgba(13, 15, 20, 0.85);
            backdrop-filter: blur(6px);
            color: var(--color-accent);
            font-size: 11px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }
        .topic-card-body {
            padding: 18px 20px;
        }
        .topic-card-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .topic-card-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .topic-card-body .topic-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .topic-card-body .topic-link i {
            transition: transform 0.3s ease;
            font-size: 11px;
        }
        .topic-card-body .topic-link:hover i {
            transform: translateX(3px);
        }

        /* Footer */
        .site-footer {
            background: #0A0C10;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--color-border);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo .nav-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
            border-radius: 8px;
        }
        .footer-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.75;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: all 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }
        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            line-height: 1.7;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-subscribe-form input {
            flex: 1;
            min-width: 150px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 9px 14px;
            font-size: 13px;
            color: var(--color-text);
            outline: none;
            transition: all 0.25s ease;
        }
        .footer-subscribe-form input:focus {
            border-color: var(--color-border-active);
        }
        .footer-subscribe-form input::placeholder {
            color: var(--color-text-muted);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 18px 0;
            font-size: 12px;
            color: var(--color-text-muted);
        }
        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom .legal-links a {
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }
        .footer-bottom .legal-links a:hover {
            color: var(--color-primary);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .brand-row {
                padding: 12px 20px;
            }
            .nav-channels {
                padding: 0 20px;
                gap: 0;
            }
            .nav-channels>li>a {
                padding: 10px 12px;
                font-size: 13px;
            }
            .hot-tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tool-card-img {
                width: 220px;
                height: 150px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            .brand-row {
                height: 56px;
                padding: 8px 16px;
            }
            .search-box {
                display: none;
            }
            .login-btn {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .channel-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--color-bg-elevated);
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
                max-height: 60vh;
                overflow-y: auto;
            }
            .channel-row.open {
                display: block;
            }
            .nav-channels {
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: 12px 16px;
                gap: 2px;
                overflow-y: auto;
            }
            .nav-channels>li>a {
                padding: 12px 14px;
                font-size: 14px;
                justify-content: space-between;
            }
            .dropdown-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                border: none;
                background: rgba(0, 0, 0, 0.2);
                padding-left: 24px;
                display: none;
            }
            .dropdown-menu.open {
                display: block;
            }
            .nav-channels .has-dropdown:hover .dropdown-menu {
                display: none;
            }
            .nav-channels .has-dropdown:hover .dropdown-menu.open {
                display: block;
            }
            .nav-channels>li>a.active {
                background: rgba(255, 78, 26, 0.12);
            }

            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .cat-h1 {
                font-size: 28px;
            }
            .cat-stats-bar {
                gap: 16px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .filter-sort {
                width: 100%;
                justify-content: space-between;
            }

            .tool-card {
                flex-direction: column;
                gap: 14px;
                padding: 14px;
            }
            .tool-card-img {
                width: 100%;
                height: 180px;
            }

            .hot-tools-grid {
                grid-template-columns: 1fr;
            }

            .topic-cards {
                grid-template-columns: 1fr;
            }
            .topic-card-img {
                height: 150px;
            }

            .subscribe-inline {
                padding: 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-inline form {
                width: 100%;
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .cat-h1 {
                font-size: 24px;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                padding: 5px 12px;
                font-size: 12px;
            }
            .tool-card-img {
                height: 150px;
            }
            .tool-card-title {
                font-size: 16px;
            }
            .topic-card-img {
                height: 130px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        a:hover,
        a:focus {
            color: var(--color-primary);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-padding);
            position: relative;
        }
        .section-alt {
            background-color: #10141B;
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
            font-family: var(--font-title);
            line-height: 1.4;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
            font-family: var(--font-body);
        }
        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }
        .btn-with-arrow {
            gap: 6px;
        }
        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }
        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 15, 20, 0.95);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow 0.35s ease, background 0.35s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
            background: rgba(13, 15, 20, 0.98);
        }
        .brand-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            transition: height 0.35s ease, opacity 0.3s ease;
            gap: 20px;
        }
        .site-header.scrolled .brand-bar {
            height: 0;
            opacity: 0;
            overflow: hidden;
            padding: 0;
            margin: 0;
        }
        .brand-left {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 0;
        }
        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(255, 78, 26, 0.35);
        }
        .brand-logo-text {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .brand-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .brand-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 8px 16px;
            font-size: 14px;
            color: var(--color-text-muted);
            cursor: pointer;
            transition: all 0.3s ease;
            min-width: 180px;
        }
        .brand-search:hover {
            border-color: var(--color-border-active);
            background: rgba(255, 78, 26, 0.06);
        }
        .brand-search i {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .brand-login {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--color-text-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .brand-login:hover {
            color: var(--color-primary);
            border-color: rgba(255, 78, 26, 0.3);
        }
        .brand-register {
            background: var(--color-primary);
            color: #0D0F14;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.3s ease;
        }
        .brand-register:hover {
            background: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 5px rgba(255, 78, 26, 0.18);
        }
        .nav-channels-bar {
            height: 48px;
            display: flex;
            align-items: center;
            transition: height 0.35s ease;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .site-header.scrolled .nav-channels-bar {
            height: 58px;
        }
        .nav-channels {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            height: 100%;
        }
        .nav-channels>li {
            position: relative;
            height: 100%;
            display: flex;
            align-items: center;
        }
        .nav-channels>li>a {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 0 16px;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 8px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-channels>li>a:hover,
        .nav-channels>li>a:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-channels>li>a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.08);
            font-weight: 600;
        }
        .nav-channels .dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 200px;
            background: #161A23;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 8px;
            list-style: none;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all 0.3s ease;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
            z-index: 20;
            margin: 0;
        }
        .nav-channels li:hover>.dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .nav-channels .dropdown a {
            display: flex;
            align-items: center;
            padding: 10px 14px;
            color: var(--color-text-secondary);
            font-size: 14px;
            border-radius: 8px;
            transition: all 0.25s ease;
        }
        .nav-channels .dropdown a:hover {
            background: rgba(255, 78, 26, 0.08);
            color: var(--color-primary);
        }
        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: all 0.25s ease;
        }
        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu {
            display: none;
            background: #131722;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            list-style: none;
            margin: 0;
        }
        .mobile-menu>li>a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu>li>a.active {
            color: var(--color-primary);
        }
        .mobile-submenu {
            list-style: none;
            margin: 0;
            padding-left: 18px;
            display: none;
        }
        .mobile-submenu.open {
            display: block;
        }
        .mobile-submenu a {
            display: block;
            padding: 10px 0;
            font-size: 15px;
            color: var(--color-text-secondary);
        }
        .mobile-submenu a:hover {
            color: var(--color-primary);
        }

        /* ========== BREADCRUMB / H1 ========== */
        .breadcrumb-bar {
            padding: 28px 0 12px;
            font-size: 14px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }
        .breadcrumb-bar a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-bar .sep {
            color: var(--color-text-muted);
            font-size: 12px;
        }
        .breadcrumb-bar .current {
            color: var(--color-text);
            font-weight: 500;
        }
        .cat-hero {
            padding: 12px 0 36px;
        }
        .cat-hero h1 {
            font-family: var(--font-title);
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .cat-hero .cat-hero-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        /* ========== FILTER TOOLBAR ========== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 16px 0;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 32px;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
            white-space: nowrap;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--color-border-active);
            color: var(--color-text);
            background: rgba(255, 78, 26, 0.05);
        }
        .filter-tag.active {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
            font-weight: 600;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }
        .filter-sort select {
            background: #171B24;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            color: var(--color-text-secondary);
            font-size: 13px;
            padding: 8px 14px;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .filter-sort select:hover {
            border-color: var(--color-border-active);
        }
        .filter-sort select:focus {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ========== SUPPORT CARD LIST ========== */
        .support-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .support-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }
        .support-card:hover {
            transform: translateY(-5px);
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
        }
        .support-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1E2430;
        }
        .support-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .support-card:hover .support-card-img img {
            transform: scale(1.04);
        }
        .support-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(13, 15, 20, 0.85);
            color: var(--color-accent);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .support-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .support-card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 10px;
            font-family: var(--font-title);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .support-card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .support-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
        }
        .support-card-date {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .support-card-tag {
            font-size: 12px;
            color: var(--color-accent);
            background: rgba(245, 166, 35, 0.1);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
        }
        .support-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: all 0.25s ease;
        }
        .support-card-link:hover {
            color: var(--color-primary-hover);
        }
        .support-card-link i {
            font-size: 12px;
            transition: transform 0.3s ease;
        }
        .support-card-link:hover i {
            transform: translateX(4px);
        }

        /* ========== HOT QUESTIONS / FAQ ========== */
        .hot-faq-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(255, 78, 26, 0.3);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            transition: all 0.25s ease;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-primary);
        }
        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 78, 26, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 12px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }
        .faq-item .faq-answer p {
            margin: 0;
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud-item {
            display: inline-block;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            transition: all 0.3s ease;
        }
        .tag-cloud-item:hover {
            color: var(--color-primary);
            border-color: var(--color-border-active);
            background: rgba(255, 78, 26, 0.06);
            transform: translateY(-2px);
        }

        /* ========== NEWSLETTER CTA ========== */
        .newsletter-cta {
            background: linear-gradient(135deg, #1A1E2A 0%, #171B24 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }
        .newsletter-cta-content {
            flex: 1;
            min-width: 240px;
        }
        .newsletter-cta-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            font-family: var(--font-title);
        }
        .newsletter-cta-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .newsletter-cta-form {
            display: flex;
            gap: 10px;
            flex: 1;
            min-width: 280px;
            max-width: 480px;
        }
        .newsletter-cta-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 12px 18px;
            color: var(--color-text);
            font-size: 14px;
            transition: all 0.3s ease;
            min-width: 0;
        }
        .newsletter-cta-form input::placeholder {
            color: var(--color-text-muted);
        }
        .newsletter-cta-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
            outline: none;
        }

        /* ========== RESOURCE SPOTLIGHT ========== */
        .spotlight-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .spotlight-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .spotlight-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
        }
        .spotlight-card-img {
            aspect-ratio: 21 / 9;
            overflow: hidden;
            background: #1E2430;
        }
        .spotlight-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .spotlight-card:hover .spotlight-card-img img {
            transform: scale(1.03);
        }
        .spotlight-card-body {
            padding: 20px;
        }
        .spotlight-card-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            font-family: var(--font-title);
        }
        .spotlight-card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .spotlight-card-body .btn {
            font-size: 13px;
            padding: 8px 16px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0C11;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
            gap: 32px;
            padding-bottom: 40px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-top: 14px;
            max-width: 280px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo-text {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-text);
        }
        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }
        .footer-col ul a:hover {
            color: var(--color-primary);
        }
        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }
        .footer-subscribe-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 10px 14px;
            color: var(--color-text);
            font-size: 13px;
            min-width: 0;
        }
        .footer-subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.1);
            outline: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .copyright {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .legal-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .legal-links a {
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }
        .legal-links a:hover {
            color: var(--color-primary);
        }
        .legal-links span {
            color: rgba(255, 255, 255, 0.2);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .support-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-faq-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .brand-search {
                min-width: 120px;
                padding: 8px 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 767px) {
            :root {
                --section-padding: 48px 0;
            }
            .brand-bar {
                height: 58px;
            }
            .brand-search,
            .brand-login,
            .brand-register {
                display: none;
            }
            .brand-logo-text {
                font-size: 18px;
            }
            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-channels-bar {
                height: auto;
                border-top: none;
            }
            .nav-channels {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
            .mobile-menu {
                display: block;
            }
            .mobile-menu:not(.open) {
                display: none;
            }
            .site-header.scrolled .nav-channels-bar {
                height: auto;
            }
            .support-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .spotlight-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-sort {
                margin-left: 0;
                width: 100%;
            }
            .filter-sort select {
                flex: 1;
                width: 100%;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .newsletter-cta {
                padding: 24px 20px;
                flex-direction: column;
                align-items: stretch;
            }
            .newsletter-cta-form {
                flex-direction: column;
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .section-title {
                font-size: 24px;
            }
            .container {
                padding: 0 18px;
            }
        }
        @media (max-width: 520px) {
            .support-card-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .brand-bar {
                gap: 10px;
            }
            .brand-logo-text {
                font-size: 16px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        a:hover,
        a:focus {
            color: var(--color-primary);
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #10141B;
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
            line-height: 1.35;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        /* Button styles */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }

        .btn-primary:disabled,
        .btn-primary.disabled {
            background: #4A515E;
            border-color: #4A515E;
            color: #8A93A5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .btn-secondary:active {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-with-arrow {
            gap: 6px;
        }

        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* Card base */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 78, 26, 0.35);
            transform: translateY(-4px);
        }

        /* Badge and tag */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }

        .badge-primary {
            background: rgba(255, 78, 26, 0.15);
            color: var(--color-primary);
            border: 1px solid rgba(255, 78, 26, 0.3);
        }

        .badge-accent {
            background: rgba(245, 166, 35, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(245, 166, 35, 0.3);
        }

        .badge-muted {
            background: rgba(255, 255, 255, 0.05);
            color: var(--color-text-muted);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .tag:hover,
        .tag:focus {
            color: var(--color-primary);
            border-color: rgba(255, 78, 26, 0.4);
            background: rgba(255, 78, 26, 0.08);
        }

        .tag.active {
            background: rgba(255, 78, 26, 0.15);
            border-color: rgba(255, 78, 26, 0.5);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 15, 20, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            transition: all 0.35s ease;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 0;
            height: 68px;
            transition: height 0.35s ease, opacity 0.3s ease, padding 0.35s ease;
            overflow: hidden;
        }

        .brand-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0D0F14;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .brand-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .search-box:focus-within {
            border-color: rgba(255, 78, 26, 0.5);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .search-box input {
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 13px;
            width: 140px;
            outline: none;
        }

        .search-box input::placeholder {
            color: var(--color-text-muted);
        }

        .search-box i {
            color: var(--color-text-muted);
            font-size: 13px;
        }

        .auth-link {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
            transition: color 0.25s ease;
        }

        .auth-link:hover {
            color: var(--color-primary);
        }

        .auth-divider {
            width: 1px;
            height: 18px;
            background: rgba(255, 255, 255, 0.15);
        }

        .channel-row {
            display: flex;
            align-items: center;
            height: 48px;
            transition: height 0.35s ease;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .nav-channels {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .nav-channels > li {
            position: relative;
        }

        .nav-channels > li > a {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-channels > li > a:hover,
        .nav-channels > li > a:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-channels > li > a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            font-weight: 600;
        }

        .nav-channels .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 180px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 8px;
            list-style: none;
            margin: 0;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
            z-index: 100;
        }

        .nav-channels li:hover > .dropdown-menu {
            display: block;
        }

        .nav-channels .dropdown-menu a {
            display: block;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-text-secondary);
            border-radius: 8px;
            transition: all 0.25s ease;
        }

        .nav-channels .dropdown-menu a:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.25s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .site-header.scrolled .brand-row {
            height: 0;
            opacity: 0;
            padding: 0;
            overflow: hidden;
        }

        .site-header.scrolled .channel-row {
            height: 58px;
        }

        /* Mobile nav drawer */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 15, 20, 0.98);
            z-index: 999;
            padding: 80px 24px 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            padding: 14px 16px;
            border-radius: 10px;
            transition: all 0.25s ease;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.08);
        }

        .mobile-nav .mobile-sub {
            padding-left: 28px;
            font-size: 15px;
            color: var(--color-text-secondary);
        }

        .mobile-nav-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 28px;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
        }

        .mobile-nav-close:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* Breadcrumb */
        .breadcrumb-row {
            padding: 120px 0 0;
            position: relative;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb .current {
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* C01 H1 Area */
        .category-h1-area {
            padding: 28px 0 8px;
        }

        .category-h1 {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .category-h1 .highlight {
            color: var(--color-primary);
        }

        .category-intro {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            max-width: 760px;
            margin: 0;
        }

        /* C02 Filter/Sort Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 16px 20px;
            margin-top: 32px;
        }

        .filter-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sort-select {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: var(--color-text-secondary);
            font-size: 13px;
            padding: 8px 14px;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            min-width: 140px;
            transition: all 0.25s ease;
        }

        .sort-select:focus {
            border-color: rgba(255, 78, 26, 0.5);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.1);
            outline: none;
        }

        .sort-select option {
            background: var(--color-bg-elevated);
            color: var(--color-text);
        }

        /* C03 Resource List Cards */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .resource-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 78, 26, 0.35);
            transform: translateY(-4px);
        }

        .resource-card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1A1F2B;
        }

        .resource-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .resource-card:hover .resource-card-media img {
            transform: scale(1.04);
        }

        .resource-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .resource-card-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .resource-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.45;
            letter-spacing: 0.01em;
        }

        .resource-card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin: 0 0 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .resource-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: var(--color-text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 12px;
        }

        .resource-card-meta .file-info {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .resource-card-action {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 14px;
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.08);
            border: 1px solid rgba(255, 78, 26, 0.25);
            border-radius: 8px;
            padding: 8px 16px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-download:hover,
        .btn-download:focus {
            background: rgba(255, 78, 26, 0.15);
            border-color: rgba(255, 78, 26, 0.5);
            color: var(--color-primary-hover);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .resource-more-wrap {
            text-align: center;
            margin-top: 32px;
        }

        /* C04 Hot Resources */
        .hot-resources {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 32px;
        }

        .hot-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 16px;
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .hot-item:hover {
            border-color: rgba(255, 78, 26, 0.35);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .hot-item-rank {
            font-size: 24px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: rgba(255, 78, 26, 0.5);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hot-item-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
            margin: 0;
        }

        .hot-item-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: auto;
        }

        /* C05 Tags */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        /* C06 Subscribe */
        .subscribe-inline {
            background: linear-gradient(135deg, rgba(255, 78, 26, 0.08), rgba(245, 166, 35, 0.05));
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 8px;
        }

        .subscribe-inline-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 6px;
        }

        .subscribe-inline-info p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            background: rgba(13, 15, 20, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            color: var(--color-text);
            font-size: 14px;
            padding: 10px 18px;
            min-width: 240px;
            transition: all 0.3s ease;
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: rgba(255, 78, 26, 0.5);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .subscribe-form input::placeholder {
            color: var(--color-text-muted);
        }

        /* C07 Featured Resource Cards */
        .featured-resource-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .featured-card {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 78, 26, 0.35);
            transform: translateY(-4px);
        }

        .featured-card-media {
            aspect-ratio: 21 / 9;
            overflow: hidden;
            position: relative;
        }

        .featured-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.45;
        }

        .featured-card-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }

        /* Footer */
        .site-footer {
            background: #0A0C11;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin: 0;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 16px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }

        .footer-col ul a:hover {
            color: var(--color-primary);
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }

        .footer-subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-subscribe-form input {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: var(--color-text);
            font-size: 13px;
            padding: 10px 16px;
            transition: all 0.3s ease;
        }

        .footer-subscribe-form input:focus {
            outline: none;
            border-color: rgba(255, 78, 26, 0.5);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.1);
        }

        .footer-subscribe-form input::placeholder {
            color: var(--color-text-muted);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .footer-bottom .copyright span {
            color: var(--color-text-muted);
        }

        .legal-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .legal-links a {
            color: var(--color-text-muted);
            transition: color 0.25s ease;
        }

        .legal-links a:hover {
            color: var(--color-primary);
        }

        .legal-links span {
            color: rgba(255, 255, 255, 0.2);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .hot-resources {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .featured-resource-cards {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 639px) {
            .brand-row {
                height: 56px;
            }
            .channel-row {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .brand-right {
                gap: 8px;
            }
            .search-box {
                display: none;
            }
            .auth-link {
                display: none;
            }
            .auth-divider {
                display: none;
            }
            .nav-logo-text {
                font-size: 17px;
            }
            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .category-h1 {
                font-size: 30px;
            }
            .resource-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hot-resources {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 14px 16px;
            }
            .filter-sort {
                width: 100%;
            }
            .sort-select {
                flex: 1;
                min-width: 0;
            }
            .subscribe-inline {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-form input {
                min-width: 0;
                flex: 1;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .breadcrumb-row {
                padding: 88px 0 0;
            }
            .category-h1-area {
                padding: 20px 0 4px;
            }
            .resource-card-media {
                aspect-ratio: 16 / 10;
            }
        }

        @media (max-width: 380px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 21px;
            }
            .category-h1 {
                font-size: 26px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .btn-sm {
                padding: 7px 14px;
                font-size: 12px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #FF4E1A;
            --color-primary-hover: #FF6B3D;
            --color-accent: #F5A623;
            --color-accent-2: #7B3FF2;
            --color-bg: #0D0F14;
            --color-bg-card: #171B24;
            --color-bg-elevated: #1E2430;
            --color-text: #F5F6FA;
            --color-text-secondary: #C2C8D2;
            --color-text-muted: #8A93A5;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-active: rgba(255, 78, 26, 0.6);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --font-title: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: "HarmonyOS Sans SC", "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", "Consolas", monospace;
            --section-padding: 72px 0;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            padding-top: 112px;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }

        a:hover,
        a:focus {
            color: var(--color-primary);
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-body);
            font-size: 16px;
        }

        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-padding);
            position: relative;
        }

        .section-alt {
            background-color: #10141B;
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border: 1px solid rgba(255, 78, 26, 0.2);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        /* Button Styles */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0D0F14;
            border-color: var(--color-primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #0D0F14;
            box-shadow: 0 0 0 6px rgba(255, 78, 26, 0.2);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            background: #E04417;
            border-color: #E04417;
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.15);
            transform: translateY(0);
        }

        .btn-primary:disabled,
        .btn-primary.disabled {
            background: #4A515E;
            border-color: #4A515E;
            color: #8A93A5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-text);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.05);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .btn-secondary:active {
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-with-arrow {
            gap: 6px;
        }

        .btn-with-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-with-arrow:hover i {
            transform: translateX(4px);
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 15, 20, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            border-bottom-color: rgba(255, 78, 26, 0.2);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            transition: all 0.35s ease;
            overflow: hidden;
        }

        .site-header.scrolled .header-brand-row {
            min-height: 0;
            height: 0;
            padding-top: 0;
            padding-bottom: 0;
            opacity: 0;
            pointer-events: none;
        }

        .header-brand-left {
            display: flex;
            align-items: center;
            gap: 14px;
            min-width: 0;
        }

        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-primary);
            color: #0D0F14;
            border-radius: 10px;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-logo-text {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .header-brand-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 8px 16px;
            transition: all 0.3s ease;
        }

        .header-search-box:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .header-search-box i {
            color: var(--color-text-muted);
            font-size: 13px;
        }

        .header-search-box input {
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 14px;
            outline: none;
            width: 160px;
            padding: 0;
        }

        .header-search-box input::placeholder {
            color: var(--color-text-muted);
        }

        .header-auth-links {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-auth-links a {
            color: var(--color-text-secondary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
        }

        .header-auth-links a:hover {
            color: var(--color-primary);
        }

        .header-auth-links .btn {
            padding: 7px 18px;
            font-size: 13px;
        }

        .header-channel-row {
            border-top: 1px solid var(--color-border);
            transition: all 0.35s ease;
            background: rgba(13, 15, 20, 0.85);
        }

        .site-header.scrolled .header-channel-row {
            border-top-color: transparent;
            background: rgba(13, 15, 20, 0.96);
        }

        .nav-channels {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0 24px;
            max-width: var(--container-max);
            min-height: 48px;
            gap: 4px;
        }

        .nav-channels>li {
            position: relative;
        }

        .nav-channels>li>a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 18px;
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-channels>li>a:hover,
        .nav-channels>li>a:focus {
            color: var(--color-text);
            background: rgba(255, 78, 26, 0.08);
        }

        .nav-channels>li>a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.12);
            font-weight: 600;
        }

        .nav-channels .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 8px;
            min-width: 180px;
            background: #1E2430;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 8px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all 0.3s ease;
            z-index: 100;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
            list-style: none;
            margin: 0;
        }

        .nav-channels li:hover>.dropdown-menu,
        .nav-channels li:focus-within>.dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .nav-channels .dropdown-menu li a {
            display: block;
            padding: 10px 20px;
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: all 0.2s ease;
        }

        .nav-channels .dropdown-menu li a:hover {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.06);
            padding-left: 24px;
        }

        .header-mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: all 0.25s ease;
        }

        .header-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-primary);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 15, 20, 0.9);
            z-index: 998;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: #1E2430;
            z-index: 999;
            padding: 24px 20px;
            overflow-y: auto;
            transition: right 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
        }

        .mobile-nav-drawer.open {
            right: 0;
        }

        .mobile-nav-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-nav-drawer .drawer-close {
            background: transparent;
            border: none;
            color: var(--color-text-muted);
            font-size: 22px;
            cursor: pointer;
            padding: 4px;
            transition: color 0.2s ease;
        }

        .mobile-nav-drawer .drawer-close:hover {
            color: var(--color-primary);
        }

        .mobile-nav-drawer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-nav-drawer ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 12px;
            color: var(--color-text-secondary);
            font-size: 16px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .mobile-nav-drawer ul li a:hover,
        .mobile-nav-drawer ul li a.active {
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.08);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 32px 0 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            list-style: none;
            padding: 0;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li a {
            color: var(--color-text-muted);
        }

        .breadcrumb li a:hover {
            color: var(--color-primary);
        }

        .breadcrumb li:not(:last-child)::after {
            content: "/";
            color: var(--color-text-muted);
            opacity: 0.5;
        }

        /* C01 H1 Area */
        .category-hero {
            padding: 40px 0 24px;
        }

        .category-hero-content {
            display: flex;
            align-items: flex-start;
            gap: 48px;
            flex-wrap: wrap;
        }

        .category-hero-left {
            flex: 1 1 520px;
            min-width: 0;
        }

        .category-hero-left h1 {
            font-size: 40px;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--color-text);
            line-height: 1.3;
            font-family: var(--font-title);
        }

        .category-hero-left .category-hero-desc {
            font-size: 17px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            max-width: 560px;
            margin: 0;
        }

        .category-hero-right {
            flex: 0 0 400px;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
        }

        .code-block-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 14px;
        }

        .code-block-header span {
            font-size: 12px;
            color: var(--color-text-muted);
            font-family: var(--font-mono);
            letter-spacing: 0.04em;
        }

        .code-block-header .dot-group {
            display: flex;
            gap: 6px;
        }

        .code-block-header .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #4A515E;
        }

        .code-block-header .dot:nth-child(1) {
            background: #FF5F56;
        }

        .code-block-header .dot:nth-child(2) {
            background: #FFBD2E;
        }

        .code-block-header .dot:nth-child(3) {
            background: #27C93F;
        }

        .code-block-body pre {
            margin: 0;
            padding: 0;
            background: transparent;
            border: none;
            font-family: var(--font-mono);
            font-size: 13px;
            line-height: 1.7;
            color: #C2C8D2;
            overflow-x: auto;
        }

        .code-block-body pre code {
            background: transparent;
            border: none;
            padding: 0;
            color: #C2C8D2;
            font-family: var(--font-mono);
        }

        .code-block-body pre .key {
            color: #F5A623;
        }

        .code-block-body pre .string {
            color: #4EC9B0;
        }

        .code-block-body pre .number {
            color: #7B3FF2;
        }

        .api-cta-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .api-cta-row .btn {
            font-family: var(--font-body);
            font-size: 13px;
        }

        /* C02 Filter Toolbar */
        .filter-toolbar {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .filter-tags li a {
            display: inline-block;
            padding: 7px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .filter-tags li a:hover {
            color: var(--color-primary);
            border-color: rgba(255, 78, 26, 0.4);
            background: rgba(255, 78, 26, 0.06);
        }

        .filter-tags li a.active {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            font-weight: 600;
        }

        .sort-control {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sort-control label {
            font-size: 13px;
            color: var(--color-text-muted);
            white-space: nowrap;
        }

        .sort-control select {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 13px;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.25s ease;
            outline: none;
        }

        .sort-control select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        /* C03 News List */
        .news-list-section {
            padding: 48px 0 24px;
        }

        .news-list-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .news-card {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 20px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
            align-items: flex-start;
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
        }

        .news-card-thumb {
            width: 240px;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .news-card:hover .news-card-thumb img {
            transform: scale(1.04);
        }

        .news-card-body {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .news-tag {
            display: inline-block;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(255, 78, 26, 0.1);
            border-radius: var(--radius-pill);
            white-space: nowrap;
        }

        .news-date {
            font-size: 13px;
            color: var(--color-text-muted);
            font-family: var(--font-mono);
        }

        .news-card-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            margin: 0 0 8px;
        }

        .news-card-title a {
            color: var(--color-text);
        }

        .news-card-title a:hover {
            color: var(--color-primary);
        }

        .news-card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin: 0 0 14px;
            flex: 1;
        }

        .news-card-action {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        .news-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            transition: all 0.25s ease;
        }

        .news-read-more:hover {
            color: var(--color-primary);
        }

        .news-read-more i {
            font-size: 12px;
            transition: transform 0.25s ease;
        }

        .news-read-more:hover i {
            transform: translateX(3px);
        }

        .news-card-stats {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .news-card-stats i {
            margin-right: 4px;
            font-size: 11px;
        }

        .news-list-more {
            display: flex;
            justify-content: center;
            padding: 28px 0 0;
        }

        /* C04 Hot Articles */
        .hot-articles-section {
            padding: 32px 0;
        }

        .hot-articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .hot-article-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 14px 16px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .hot-article-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-border-active);
            box-shadow: var(--shadow-card-hover);
        }

        .hot-article-rank {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
            min-width: 40px;
            text-align: center;
        }

        .hot-article-info {
            min-width: 0;
        }

        .hot-article-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 6px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-article-info h4 a {
            color: var(--color-text);
        }

        .hot-article-info h4 a:hover {
            color: var(--color-primary);
        }

        .hot-article-info .hot-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .hot-article-info .hot-meta i {
            margin-right: 3px;
        }

        /* C05 Related Tags */
        .tags-section {
            padding: 32px 0;
        }

        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 0;
            list-style: none;
            margin: 0;
        }

        .tags-cloud li a {
            display: inline-block;
            padding: 7px 19px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .tags-cloud li a:hover {
            color: var(--color-primary);
            border-color: var(--color-border-active);
            background: rgba(255, 78, 26, 0.06);
            transform: translateY(-1px);
        }

        /* C06 Subscribe CTA */
        .subscribe-cta-section {
            padding: 32px 0;
        }

        .subscribe-cta-card {
            background: linear-gradient(135deg, #1E2430 0%, #0D0F14 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            box-shadow: var(--shadow-card);
        }

        .subscribe-cta-card .subscribe-info {
            flex: 1 1 400px;
            min-width: 0;
        }

        .subscribe-cta-card .subscribe-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
        }

        .subscribe-cta-card .subscribe-info p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        .subscribe-cta-card .subscribe-form {
            flex: 0 0 380px;
            max-width: 100%;
            display: flex;
            gap: 10px;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 12px 18px;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            outline: none;
            transition: all 0.25s ease;
            min-width: 0;
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(255, 78, 26, 0.1);
        }

        .subscribe-form input[type="email"]::placeholder {
            color: var(--color-text-muted);
        }

        .subscribe-form .btn {
            flex-shrink: 0;
            white-space: nowrap;
        }

        /* C07 Topics */
        .topics-section {
            padding: 32px 0 72px;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .topic-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 200px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }

        .topic-card::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(13, 15, 20, 0.85) 100%);
            z-index: 1;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .topic-card-content {
            position: relative;
            z-index: 2;
            padding: 22px;
            width: 100%;
        }

        .topic-card-content h4 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 6px;
        }

        .topic-card-content p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin: 0 0 12px;
            line-height: 1.6;
        }

        .topic-card-content .btn {
            font-size: 12px;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        .topic-card-content .btn:hover {
            background: rgba(255, 78, 26, 0.2);
            border-color: var(--color-primary);
            color: var(--color-primary-hover);
        }

        /* Footer */
        .site-footer {
            background: #0A0C10;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 0;
            margin-top: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr repeat(2, 0.8fr) 1fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-logo .nav-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
            border-radius: 8px;
        }

        .footer-logo-text {
            font-family: var(--font-title);
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-muted);
            transition: all 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .footer-subscribe p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0 0 14px;
            line-height: 1.7;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 8px;
        }

        .footer-subscribe-form input[type="email"] {
            flex: 1;
            padding: 10px 14px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            color: var(--color-text);
            outline: none;
            transition: all 0.25s ease;
            min-width: 0;
        }

        .footer-subscribe-form input[type="email"]:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 78, 26, 0.1);
        }

        .footer-subscribe-form input[type="email"]::placeholder {
            color: var(--color-text-muted);
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .footer-bottom .copyright {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .footer-bottom .legal-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
        }

        .footer-bottom .legal-links a {
            color: var(--color-text-muted);
            font-size: 12px;
        }

        .footer-bottom .legal-links a:hover {
            color: var(--color-primary);
        }

        .footer-bottom .legal-links span {
            color: var(--color-text-muted);
            opacity: 0.5;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .hot-articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topics-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .category-hero-right {
                flex: 0 0 320px;
            }

            .news-card {
                grid-template-columns: 200px 1fr;
            }

            .news-card-thumb {
                width: 200px;
            }
        }

        @media (max-width: 767px) {
            body {
                padding-top: 56px;
            }

            .header-brand-row {
                min-height: 56px;
                padding: 0 16px;
            }

            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
                border-radius: 8px;
            }

            .nav-logo-text {
                font-size: 17px;
            }

            .header-search-box,
            .header-auth-links {
                display: none;
            }

            .header-mobile-toggle {
                display: block;
            }

            .header-channel-row {
                display: none;
            }

            .site-header.scrolled .header-brand-row {
                min-height: 56px;
                height: auto;
                opacity: 1;
                pointer-events: auto;
            }

            .mobile-nav-overlay,
            .mobile-nav-drawer {
                display: block;
            }

            .mobile-nav-overlay {
                display: none;
            }

            .mobile-nav-overlay.open {
                display: block;
            }

            .category-hero-content {
                flex-direction: column;
                gap: 24px;
            }

            .category-hero-right {
                flex: 1 1 auto;
                width: 100%;
            }

            .category-hero-left h1 {
                font-size: 30px;
            }

            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 24px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }

            .news-card {
                grid-template-columns: 1fr;
                gap: 14px;
                padding: 14px;
            }

            .news-card-thumb {
                width: 100%;
                aspect-ratio: 16 / 9;
            }

            .hot-articles-grid {
                grid-template-columns: 1fr;
            }

            .subscribe-cta-card {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-cta-card .subscribe-form {
                flex: 1 1 auto;
                width: 100%;
                flex-direction: column;
            }

            .subscribe-form input[type="email"],
            .subscribe-form .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .breadcrumb-wrap {
                padding: 16px 0 0;
            }

            .category-hero {
                padding: 24px 0 16px;
            }
        }

        @media (max-width: 519px) {
            .container {
                padding: 0 16px;
            }

            .category-hero-left h1 {
                font-size: 26px;
            }

            .category-hero-left .category-hero-desc {
                font-size: 15px;
            }

            .filter-tags {
                gap: 6px;
            }

            .filter-tags li a {
                padding: 5px 12px;
                font-size: 12px;
            }

            .news-card-title {
                font-size: 16px;
            }

            .news-card-excerpt {
                font-size: 13px;
            }

            .news-card-stats {
                flex-direction: column;
                gap: 4px;
            }

            .code-block-body pre {
                font-size: 11px;
            }
        }