/* roulang page: index */
:root {
            --primary: #7C3AED;
            --primary-light: #9B5DE5;
            --primary-dark: #5B21B6;
            --primary-glow: rgba(124, 58, 237, 0.35);
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --accent-dark: #D97706;
            --accent-glow: rgba(245, 158, 11, 0.35);
            --bg-deep: #080812;
            --bg-dark: #0F0F1A;
            --bg-card: #18182B;
            --bg-card-hover: #1E1E35;
            --bg-surface: #141426;
            --bg-nav: #0A0A16;
            --text: #F1F5F9;
            --text-bright: #FFFFFF;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border: #252540;
            --border-light: #323258;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
            --shadow: 0 4px 24px rgba(0,0,0,0.35);
            --shadow-lg: 0 8px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 40px rgba(124,58,237,0.2);
            --shadow-accent: 0 0 30px rgba(245,158,11,0.18);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-width: 270px;
            --header-height: 62px;
        }

        *,
        *::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-sans);
            background: var(--bg-deep);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-bright);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            display: inline-block;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            line-height: 1.7;
        }

        /* ========== APP LAYOUT ========== */
        .app-layout {
            display: flex;
            min-height: 100vh;
        }

        /* Side Nav */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--bg-nav);
            border-right: 1px solid var(--border);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 28px 0;
            overflow-y: auto;
            transition: transform var(--transition-slow);
        }
        .side-nav-inner {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 0 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-bright);
            letter-spacing: -0.01em;
            margin-bottom: 36px;
            padding: 0 6px;
        }
        .nav-logo .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }
        .nav-logo .logo-text {
            line-height: 1.2;
        }
        .nav-logo .logo-sub {
            font-size: 0.68rem;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.05em;
            display: block;
        }
        .nav-channels {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-channels .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.14em;
            color: var(--text-dim);
            padding: 8px 6px 6px;
            font-weight: 600;
        }
        .nav-channels a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-channels a:hover {
            color: var(--text-bright);
            background: rgba(255, 255, 255, 0.03);
        }
        .nav-channels a.active {
            color: var(--text-bright);
            background: rgba(124, 58, 237, 0.15);
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .nav-channels a.active::before {
            display: none;
        }
        .nav-channels a .nav-icon {
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
        }
        .nav-cta-box {
            margin-top: auto;
            padding: 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            text-align: center;
            border: 1px solid var(--border);
        }
        .nav-cta-box .cta-text {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .btn-nav-cta {
            display: block;
            width: 100%;
            padding: 10px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            text-align: center;
        }
        .btn-nav-cta:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow-glow);
        }
        .nav-footer-info {
            padding: 14px 6px 0;
            font-size: 0.7rem;
            color: var(--text-dim);
            border-top: 1px solid var(--border);
            margin-top: 14px;
            text-align: center;
        }

        /* Main Content */
        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            min-width: 0;
        }

        /* Mobile Header */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--bg-nav);
            border-bottom: 1px solid var(--border);
            z-index: 99;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }
        .mobile-header .mh-logo {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-bright);
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .mobile-header .mh-logo .logo-icon-sm {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            z-index: 101;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .hamburger span {
            display: block;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(8.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-8.5px) rotate(-45deg);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-overlay.show {
            opacity: 1;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 8, 18, 0.3) 0%, rgba(8, 8, 18, 0.7) 50%, rgba(15, 15, 26, 0.95) 100%);
            z-index: 1;
        }
        .hero-overlay-glow {
            position: absolute;
            top: -120px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
            border-radius: 50%;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 60px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid rgba(124, 58, 237, 0.35);
            padding: 7px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.6);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(245, 158, 11, 0);
            }
        }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            margin-bottom: 18px;
            line-height: 1.15;
            background: linear-gradient(180deg, #FFFFFF 30%, #C4B5FD 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 500px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-bright);
            border: 2px solid var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            background: rgba(124, 58, 237, 0.08);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a00;
            box-shadow: var(--shadow-accent);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.4);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 0.82rem;
            border-radius: 40px;
        }
        .hero-countdown {
            display: flex;
            gap: 16px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 14px 18px;
            text-align: center;
            min-width: 70px;
            backdrop-filter: blur(8px);
        }
        .countdown-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent);
            font-family: var(--font-mono);
            line-height: 1;
        }
        .countdown-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 0;
        }
        .stats-bar .container {
            display: flex;
            gap: 0;
        }
        .stat-item {
            flex: 1;
            text-align: center;
            padding: 28px 20px;
            border-right: 1px solid var(--border);
            transition: background var(--transition-fast);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-item:hover {
            background: var(--bg-card-hover);
        }
        .stat-num {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--text-bright);
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .stat-num .plus {
            color: var(--accent);
        }
        .stat-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== SECTIONS GENERAL ========== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-dark);
        }
        .section-card-bg {
            background: var(--bg-surface);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-label {
            justify-content: center;
        }
        .section-header .section-title {
            margin: 0 auto 12px;
            max-width: 700px;
        }
        .section-header .section-desc {
            margin: 0 auto;
        }

        /* ========== CATEGORY CARDS ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-category {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: inherit;
        }
        .card-category:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow-lg), 0 0 0 1px rgba(124, 58, 237, 0.25);
        }
        .card-category-img {
            height: 200px;
            overflow: hidden;
        }
        .card-category-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-category:hover .card-category-img img {
            transform: scale(1.06);
        }
        .card-category-body {
            padding: 20px;
        }
        .card-category-body h3 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .card-category-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .card-category-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cms-list-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px 22px;
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }
        .cms-list-item:hover {
            border-color: var(--primary);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .cms-list-thumb {
            width: 90px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-surface);
        }
        .cms-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .cms-list-info {
            flex: 1;
            min-width: 0;
        }
        .cms-list-info h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .cms-list-info h4 a {
            color: var(--text-bright);
            transition: color var(--transition-fast);
        }
        .cms-list-info h4 a:hover {
            color: var(--primary-light);
        }
        .cms-list-meta {
            font-size: 0.78rem;
            color: var(--text-dim);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .cms-list-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .cms-list-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 0.95rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .cms-view-all {
            text-align: center;
            margin-top: 28px;
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .feature-block {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-block:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow);
        }
        .feature-info h3 {
            font-size: 1.08rem;
            margin-bottom: 6px;
        }
        .feature-info p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 32px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--border-light);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            padding-left: 24px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 7px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 3px var(--border-light);
        }
        .timeline-item.current::before {
            background: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
            animation: pulse-dot 2s infinite;
        }
        .timeline-date {
            font-size: 0.78rem;
            color: var(--accent);
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 2px;
        }
        .timeline-title {
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--text-bright);
        }
        .timeline-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 3px;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .testimonial-stars {
            color: var(--accent);
            font-size: 0.9rem;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            font-style: italic;
        }
        .testimonial-author {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--text-bright);
        }
        .testimonial-role {
            font-size: 0.75rem;
            color: var(--text-dim);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-bright);
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            transition: transform var(--transition);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== CTA ========== */
        .cta-section {
            text-align: center;
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .cta-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.3;
        }
        .cta-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 26, 0.9) 0%, rgba(15, 15, 26, 0.95) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content .section-title {
            font-size: 2.6rem;
        }
        .cta-content .section-desc {
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-bright);
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-dim);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-dim);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .side-nav {
                transform: translateX(-100%);
                box-shadow: var(--shadow-lg);
            }
            .side-nav.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay {
                display: block;
                pointer-events: none;
            }
            .mobile-overlay.show {
                pointer-events: all;
                opacity: 1;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height);
            }
            .hero-section {
                min-height: 70vh;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .stats-bar .container {
                flex-wrap: wrap;
            }
            .stat-item {
                flex: 1 1 50%;
                border-bottom: 1px solid var(--border);
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
        }

        @media (max-width: 768px) {
            .cards-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-countdown {
                gap: 8px;
            }
            .countdown-item {
                padding: 10px 12px;
                min-width: 55px;
            }
            .countdown-num {
                font-size: 1.4rem;
            }
            .cms-list-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px;
            }
            .cms-list-thumb {
                width: 100%;
                height: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-num {
                font-size: 1.6rem;
            }
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 520px) {
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-bar .container {
                flex-direction: column;
            }
            .stat-item {
                flex: auto;
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 18px 16px;
            }
            .stat-item:last-child {
                border-bottom: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline::before {
                left: 7px;
            }
            .timeline-item::before {
                left: -21px;
                width: 10px;
                height: 10px;
            }
            .container {
                padding: 0 14px;
            }
            .section {
                padding: 36px 0;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #6c3cf0;
            --color-primary-light: #8b5ff7;
            --color-primary-dark: #4a1db8;
            --color-accent: #f0a500;
            --color-accent-light: #ffc940;
            --color-bg-deep: #0d0d1a;
            --color-bg-surface: #1a1a2e;
            --color-bg-card: #1e1e35;
            --color-bg-elevated: #252540;
            --color-text-primary: #e8e8f0;
            --color-text-secondary: #b0b0c0;
            --color-text-muted: #7a7a90;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(255, 255, 255, 0.15);
            --color-success: #2ecc71;
            --color-danger: #e74c3c;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(108, 60, 240, 0.25);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --nav-height: 64px;
            --container-max: 1200px;
            --section-gap: 60px;
            --section-gap-sm: 36px;
        }

        *,
        *::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-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--color-accent);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== HEADER & NAV ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
            background: rgba(13, 13, 26, 0.97);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }

        .nav-logo-group {
            display: flex;
            align-items: center;
            gap: 32px;
            flex-shrink: 0;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .logo-link:hover {
            color: var(--color-accent);
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--color-text-muted);
            margin-right: 8px;
            display: none;
        }

        .nav-channels a {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all 0.25s ease;
            white-space: nowrap;
            position: relative;
        }

        .nav-channels a:hover {
            color: var(--color-text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-channels a.active {
            color: #fff;
            background: rgba(108, 60, 240, 0.25);
            font-weight: 600;
        }

        .nav-channels a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .nav-icon {
            font-size: 0.85rem;
            color: var(--color-accent);
            opacity: 0.8;
        }

        .nav-channels a.active .nav-icon {
            opacity: 1;
        }

        /* Mobile nav toggle */
        .mobile-nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            z-index: 1001;
            background: transparent;
            border: none;
        }

        .mobile-nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--color-text-primary);
            transition: all 0.3s ease;
            transform-origin: center;
        }

        .mobile-nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .mobile-nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ==================== MAIN CONTENT ==================== */
        .main-content {
            flex: 1;
            padding-bottom: var(--section-gap);
        }

        /* Article Banner */
        .article-banner {
            position: relative;
            background: url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            padding: 60px 0 0;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 13, 26, 0.95) 0%, rgba(13, 13, 26, 0.5) 50%, rgba(13, 13, 26, 0.3) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, var(--color-bg-deep) 0%, transparent 100%);
            z-index: 2;
        }

        .article-banner-content {
            position: relative;
            z-index: 3;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 40px 24px 30px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--color-text-secondary);
            transition: color 0.2s ease;
        }

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

        .article-breadcrumb .separator {
            font-size: 0.7rem;
            opacity: 0.5;
        }

        .article-banner-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            max-width: 800px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .article-meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(108, 60, 240, 0.4);
            color: #d0c0ff;
            border: 1px solid rgba(108, 60, 240, 0.5);
        }

        .article-meta-date {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Article Body Section */
        .article-body-section {
            padding: 40px 0;
        }

        .article-body-wrapper {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .article-body-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text-primary);
        }

        .article-body-content h2 {
            font-size: 1.5rem;
            color: #fff;
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(108, 60, 240, 0.3);
            line-height: 1.35;
        }

        .article-body-content h3 {
            font-size: 1.25rem;
            color: #f0f0f8;
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .article-body-content p {
            margin-bottom: 16px;
            color: var(--color-text-primary);
        }

        .article-body-content ul,
        .article-body-content ol {
            margin: 12px 0 20px;
            padding-left: 24px;
        }

        .article-body-content ul {
            list-style: disc;
        }

        .article-body-content ol {
            list-style: decimal;
        }

        .article-body-content li {
            margin-bottom: 8px;
            color: var(--color-text-secondary);
        }

        .article-body-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-md);
        }

        .article-body-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: rgba(108, 60, 240, 0.08);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }

        .article-body-content a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body-content a:hover {
            color: var(--color-accent-light);
        }

        .article-body-content strong {
            color: #fff;
            font-weight: 600;
        }

        .article-body-content code {
            background: var(--color-bg-elevated);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--color-accent);
        }

        .article-body-content pre {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            border: 1px solid var(--color-border);
        }

        .article-body-content pre code {
            background: none;
            padding: 0;
            color: var(--color-text-primary);
        }

        /* Not Found State */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }

        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--color-text-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--color-primary);
            color: #fff;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-glow);
        }

        .btn-back-home:hover {
            background: var(--color-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 60, 240, 0.4);
        }

        /* Related Articles Section */
        .related-section {
            padding: 0 0 50px;
        }

        .related-section .container {
            max-width: var(--container-max);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--color-accent);
            margin-bottom: 8px;
            font-weight: 600;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .section-title-related {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 28px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-strong);
        }

        .related-card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .related-card-img img {
            transform: scale(1.06);
        }

        .related-card-img .card-category-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(0, 0, 0, 0.7);
            color: var(--color-accent);
            backdrop-filter: blur(4px);
        }

        .related-card-body {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-desc {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .related-card-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .related-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            grid-column: 1 / -1;
        }

        /* CTA Section */
        .cta-section {
            padding: 50px 0;
            text-align: center;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--color-bg-surface) 0%, var(--color-bg-elevated) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 32px;
            border: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 20%, rgba(108, 60, 240, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }

        .cta-card h3 {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-card p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            font-size: 0.95rem;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-glow);
            position: relative;
            z-index: 1;
        }

        .btn-cta:hover {
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(108, 60, 240, 0.45);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
        }

        /* ==================== FOOTER ==================== */
        .site-footer {
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
            padding: 50px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--color-border);
        }

        .footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer-col ul li a {
            color: var(--color-text-muted);
            font-size: 0.88rem;
            transition: color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ==================== RESPONSIVE ==================== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-banner-title {
                font-size: 1.6rem;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --section-gap: 40px;
            }

            .nav-channels {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 999;
                overflow-y: auto;
            }

            .nav-channels.open {
                transform: translateX(0);
            }

            .nav-label {
                display: block;
                padding: 8px 16px;
                font-size: 0.7rem;
            }

            .nav-channels a {
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }

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

            .article-banner {
                min-height: 220px;
            }

            .article-banner-title {
                font-size: 1.35rem;
            }

            .article-body-content {
                font-size: 1rem;
            }

            .article-body-content h2 {
                font-size: 1.3rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-card-img {
                height: 180px;
            }

            .cta-card {
                padding: 32px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .logo-link {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }

            .article-banner {
                min-height: 180px;
            }

            .article-banner-title {
                font-size: 1.2rem;
            }

            .article-banner-content {
                padding: 24px 16px 20px;
            }

            .article-meta-row {
                gap: 10px;
            }

            .article-body-wrapper {
                padding: 0 16px;
            }

            .article-body-content {
                font-size: 0.95rem;
            }

            .section-title-related {
                font-size: 1.25rem;
            }

            .btn-cta {
                padding: 12px 24px;
                font-size: 0.9rem;
            }

            .cta-card h3 {
                font-size: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-brand: #6C2FCF;
            --color-brand-light: #8B5CF6;
            --color-brand-dark: #4a1d91;
            --color-accent: #FF7B1A;
            --color-accent-light: #ff9a33;
            --color-accent-dark: #c0530a;
            --color-gold: #D4A843;
            --color-gold-light: #e8c560;
            --color-bg-primary: #0e0b1c;
            --color-bg-secondary: #151125;
            --color-bg-card: #1c1730;
            --color-bg-card-hover: #231d3a;
            --color-surface: #2a2340;
            --color-text-primary: #f3f0f8;
            --color-text-secondary: #b8b5c9;
            --color-text-muted: #8a87a0;
            --color-border: #2e2850;
            --color-border-light: #3d3565;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 24px rgba(108,47,207,0.25);
            --shadow-gold: 0 0 20px rgba(212,168,67,0.2);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        *, *::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: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        .container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 960px; }
        .container-wide { max-width: 1360px; }

        /* Header */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(14,11,28,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
        }
        .site-header.scrolled { background: rgba(14,11,28,0.97); box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 64px; gap: 24px;
        }
        .header-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .header-logo-icon {
            width: 40px; height: 40px; border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-brand), var(--color-brand-light));
            display: flex; align-items: center; justify-content: center;
            font-size: 1.25rem; color: #fff; font-weight: 700;
            box-shadow: var(--shadow-glow);
        }
        .header-logo-text {
            font-size: 1.1rem; font-weight: 700; color: var(--color-text-primary);
            letter-spacing: 0.02em; white-space: nowrap;
        }
        .header-logo-text span { color: var(--color-gold); }
        .header-nav-area { display: flex; align-items: center; gap: 8px; }
        .nav-channels { display: flex; align-items: center; gap: 4px; }
        .nav-label {
            font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em;
            color: var(--color-text-muted); padding: 0 10px; display: none;
        }
        .nav-channels a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 16px; border-radius: var(--radius-md);
            font-size: 0.9rem; font-weight: 500; color: var(--color-text-secondary);
            transition: all var(--transition-fast); white-space: nowrap;
            position: relative;
        }
        .nav-channels a:hover { color: var(--color-text-primary); background: var(--color-surface); }
        .nav-channels a.active {
            color: #fff; background: var(--color-brand);
            box-shadow: var(--shadow-glow); font-weight: 600;
        }
        .nav-channels a .nav-icon { font-size: 0.85rem; width: 20px; text-align: center; }
        .header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .btn-header-cta {
            padding: 8px 18px; border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: #fff; font-weight: 600; font-size: 0.85rem;
            transition: all var(--transition-fast); white-space: nowrap;
            box-shadow: 0 2px 10px rgba(255,123,26,0.3);
        }
        .btn-header-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 18px rgba(255,123,26,0.45); }
        .mobile-menu-toggle {
            display: none; width: 40px; height: 40px; border-radius: var(--radius-md);
            align-items: center; justify-content: center; color: var(--color-text-primary);
            font-size: 1.3rem; background: var(--color-surface); transition: all var(--transition-fast);
        }
        .mobile-menu-toggle:hover { background: var(--color-border-light); }

        /* Page Banner */
        .page-banner {
            position: relative; padding: 80px 0 64px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(14,11,28,0.75) 0%, rgba(20,17,37,0.9) 60%, rgba(14,11,28,0.98) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 40% 50%, rgba(108,47,207,0.15) 0%, transparent 60%);
            z-index: 1;
        }
        .banner-content { position: relative; z-index: 2; text-align: center; }
        .banner-breadcrumb {
            display: flex; align-items: center; justify-content: center; gap: 8px;
            margin-bottom: 20px; font-size: 0.85rem; color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .banner-breadcrumb a { color: var(--color-text-secondary); transition: color var(--transition-fast); }
        .banner-breadcrumb a:hover { color: var(--color-gold); }
        .banner-breadcrumb .separator { color: var(--color-text-muted); font-size: 0.7rem; }
        .banner-breadcrumb .current { color: var(--color-gold); font-weight: 500; }
        .banner-title {
            font-size: 2.8rem; font-weight: 900; color: #fff;
            letter-spacing: 0.03em; margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.5);
        }
        .banner-title .highlight { color: var(--color-gold-light); }
        .banner-desc {
            font-size: 1.1rem; color: var(--color-text-secondary);
            max-width: 600px; margin: 0 auto 24px; line-height: 1.7;
        }
        .banner-meta-row {
            display: flex; align-items: center; justify-content: center; gap: 24px;
            flex-wrap: wrap; font-size: 0.9rem; color: var(--color-text-muted);
        }
        .banner-meta-item { display: flex; align-items: center; gap: 6px; }
        .banner-meta-item i { color: var(--color-gold); }

        /* Section Styles */
        .section { padding: 72px 0; }
        .section-sm { padding: 48px 0; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-label {
            display: inline-block; padding: 5px 14px; border-radius: 20px;
            font-size: 0.78rem; font-weight: 600; letter-spacing: 0.05em;
            background: rgba(108,47,207,0.15); color: var(--color-brand-light);
            margin-bottom: 12px; text-transform: uppercase;
        }
        .section-title { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 10px; letter-spacing: 0.02em; }
        .section-subtitle { font-size: 1rem; color: var(--color-text-muted); max-width: 560px; margin: 0 auto; }

        /* Sub Category Cards */
        .subcat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .subcat-card {
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            border-radius: var(--radius-xl); padding: 28px 20px 24px; text-align: center;
            transition: all var(--transition-smooth); cursor: pointer; position: relative;
            overflow: hidden;
        }
        .subcat-card::before {
            content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
            width: 60px; height: 3px; border-radius: 0 0 6px 6px;
            background: linear-gradient(90deg, var(--color-brand), var(--color-brand-light));
            opacity: 0; transition: all var(--transition-smooth);
        }
        .subcat-card:hover { border-color: var(--color-border-light); background: var(--color-bg-card-hover); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .subcat-card:hover::before { opacity: 1; width: 80px; }
        .subcat-icon {
            width: 56px; height: 56px; border-radius: var(--radius-lg); margin: 0 auto 16px;
            display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
            background: linear-gradient(135deg, var(--color-surface), var(--color-bg-card));
            border: 1px solid var(--color-border); transition: all var(--transition-smooth);
        }
        .subcat-card:hover .subcat-icon { border-color: var(--color-brand); box-shadow: var(--shadow-glow); }
        .subcat-name { font-weight: 700; font-size: 1rem; color: var(--color-text-primary); margin-bottom: 4px; }
        .subcat-count { font-size: 0.8rem; color: var(--color-text-muted); }

        /* Article List */
        .article-list { display: flex; flex-direction: column; gap: 20px; }
        .article-list-item {
            display: flex; gap: 24px; background: var(--color-bg-card);
            border: 1px solid var(--color-border); border-radius: var(--radius-xl);
            padding: 20px 24px; transition: all var(--transition-smooth); align-items: center;
        }
        .article-list-item:hover { border-color: var(--color-border-light); background: var(--color-bg-card-hover); box-shadow: var(--shadow-md); transform: translateX(4px); }
        .article-list-thumb {
            width: 160px; min-width: 160px; height: 110px; border-radius: var(--radius-lg);
            overflow: hidden; flex-shrink: 0;
        }
        .article-list-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-smooth); }
        .article-list-item:hover .article-list-thumb img { transform: scale(1.06); }
        .article-list-body { flex: 1; min-width: 0; }
        .article-list-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 6px; flex-wrap: wrap; }
        .article-tag {
            font-size: 0.72rem; font-weight: 600; padding: 3px 10px; border-radius: 12px;
            letter-spacing: 0.04em;
        }
        .article-tag.beginner { background: rgba(52,211,153,0.15); color: #34d399; }
        .article-tag.advanced { background: rgba(167,139,250,0.15); color: #a78bfa; }
        .article-tag.guide { background: rgba(251,191,36,0.15); color: #fbbf24; }
        .article-tag.tournament { background: rgba(244,114,182,0.15); color: #f472b6; }
        .article-tag.security { background: rgba(96,165,250,0.15); color: #60a5fa; }
        .article-tag.tutorial { background: rgba(74,222,222,0.15); color: #4ade80; }
        .article-list-date { font-size: 0.8rem; color: var(--color-text-muted); }
        .article-list-title { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 4px; transition: color var(--transition-fast); }
        .article-list-item:hover .article-list-title { color: var(--color-gold-light); }
        .article-list-excerpt { font-size: 0.88rem; color: var(--color-text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .article-list-read { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 4px; }

        /* Featured Grid */
        .featured-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .featured-card {
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            border-radius: var(--radius-xl); overflow: hidden; transition: all var(--transition-smooth);
        }
        .featured-card:hover { border-color: var(--color-border-light); transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .featured-card-img { width: 100%; height: 200px; overflow: hidden; position: relative; }
        .featured-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-smooth); }
        .featured-card:hover .featured-card-img img { transform: scale(1.08); }
        .featured-card-img .overlay-tag {
            position: absolute; top: 12px; left: 12px; padding: 4px 12px; border-radius: 14px;
            font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
            background: rgba(0,0,0,0.7); color: var(--color-gold-light);
        }
        .featured-card-body { padding: 20px; }
        .featured-card-title { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 6px; transition: color var(--transition-fast); }
        .featured-card:hover .featured-card-title { color: var(--color-gold-light); }
        .featured-card-excerpt { font-size: 0.84rem; color: var(--color-text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
        .featured-card-footer { display: flex; justify-content: space-between; align-items: center; font-size: 0.78rem; color: var(--color-text-muted); }

        /* Tips Section */
        .tips-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .tip-card {
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            border-radius: var(--radius-xl); padding: 32px 24px; text-align: center;
            transition: all var(--transition-smooth); position: relative;
        }
        .tip-card:hover { border-color: var(--color-border-light); background: var(--color-bg-card-hover); box-shadow: var(--shadow-md); }
        .tip-number {
            font-size: 3rem; font-weight: 900; color: rgba(108,47,207,0.2);
            position: absolute; top: 8px; right: 20px; line-height: 1;
        }
        .tip-icon { font-size: 2rem; margin-bottom: 16px; color: var(--color-gold); }
        .tip-title { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .tip-desc { font-size: 0.88rem; color: var(--color-text-secondary); line-height: 1.6; }

        /* Stats Section */
        .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            border-radius: var(--radius-xl); padding: 28px 20px; text-align: center;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover { border-color: var(--color-border-light); box-shadow: var(--shadow-md); }
        .stat-value { font-size: 2.4rem; font-weight: 900; color: var(--color-gold-light); margin-bottom: 4px; }
        .stat-label { font-size: 0.85rem; color: var(--color-text-muted); }

        /* FAQ */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition-fast);
        }
        .faq-item:hover { border-color: var(--color-border-light); }
        .faq-question {
            width: 100%; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
            font-weight: 600; font-size: 1rem; color: var(--color-text-primary); text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question i { transition: transform var(--transition-smooth); color: var(--color-text-muted); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--color-gold); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition-smooth), padding var(--transition-smooth); }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 18px; }
        .faq-answer p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.7; }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-card) 50%, var(--color-bg-secondary) 100%);
            border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border);
        }
        .cta-inner { text-align: center; max-width: 640px; margin: 0 auto; }
        .cta-title { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-desc { font-size: 1rem; color: var(--color-text-secondary); margin-bottom: 28px; line-height: 1.7; }
        .btn-cta-primary {
            display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px;
            border-radius: var(--radius-lg); font-size: 1rem; font-weight: 700;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: #fff; transition: all var(--transition-smooth);
            box-shadow: 0 4px 20px rgba(255,123,26,0.35);
        }
        .btn-cta-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,123,26,0.5); }
        .btn-cta-secondary {
            display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px;
            border-radius: var(--radius-lg); font-size: 0.95rem; font-weight: 600;
            background: transparent; border: 2px solid var(--color-border-light);
            color: var(--color-text-primary); transition: all var(--transition-smooth);
            margin-left: 12px;
        }
        .btn-cta-secondary:hover { border-color: var(--color-brand-light); color: #fff; background: rgba(108,47,207,0.1); }

        /* Footer */
        .site-footer {
            background: var(--color-bg-secondary); border-top: 1px solid var(--color-border);
            padding: 56px 0 28px;
        }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
        .footer-logo {
            font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-logo span { color: var(--color-gold); }
        .footer-brand p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; }
        .footer-col h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.04em; }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li a { font-size: 0.88rem; color: var(--color-text-muted); transition: color var(--transition-fast); }
        .footer-col ul li a:hover { color: var(--color-gold-light); }
        .footer-bottom {
            border-top: 1px solid var(--color-border); padding-top: 20px;
            text-align: center; font-size: 0.82rem; color: var(--color-text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .subcat-grid { grid-template-columns: repeat(2, 1fr); }
            .featured-grid { grid-template-columns: repeat(2, 1fr); }
            .tips-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .banner-title { font-size: 2.2rem; }
            .page-banner { padding: 60px 0 48px; background-attachment: scroll; }
            .article-list-thumb { width: 130px; min-width: 130px; height: 90px; }
        }
        @media (max-width: 768px) {
            .header-inner { height: 56px; }
            .nav-channels { display: none; }
            .nav-channels.mobile-open {
                display: flex; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0;
                background: var(--color-bg-secondary); border-bottom: 1px solid var(--color-border);
                padding: 12px 16px; gap: 4px; z-index: 99; box-shadow: var(--shadow-lg);
            }
            .nav-channels.mobile-open a { width: 100%; padding: 12px 16px; border-radius: var(--radius-md); }
            .mobile-menu-toggle { display: flex; }
            .header-actions .btn-header-cta { display: none; }
            .featured-grid { grid-template-columns: 1fr; }
            .subcat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .tips-grid { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .banner-title { font-size: 1.8rem; }
            .banner-desc { font-size: 0.95rem; }
            .page-banner { padding: 48px 0 36px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .article-list-item { flex-direction: column; gap: 12px; padding: 16px; }
            .article-list-thumb { width: 100%; min-width: 100%; height: 160px; }
            .btn-cta-secondary { margin-left: 0; margin-top: 12px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .subcat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
            .subcat-card { padding: 20px 14px 18px; }
            .subcat-icon { width: 44px; height: 44px; font-size: 1.2rem; }
            .stats-row { grid-template-columns: 1fr 1fr; gap: 10px; }
            .stat-card { padding: 20px 14px; }
            .stat-value { font-size: 1.8rem; }
            .banner-title { font-size: 1.5rem; }
            .banner-meta-row { gap: 12px; font-size: 0.78rem; }
            .cta-title { font-size: 1.5rem; }
            .header-logo-text { font-size: 0.9rem; }
            .featured-card-img { height: 180px; }
        }