/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a0a2e;
            --primary-light: #2d1b4e;
            --primary-dark: #0d0518;
            --accent: #f0a500;
            --accent-light: #ffc64a;
            --accent-dark: #c98800;
            --surface: #120825;
            --surface-card: #1e1038;
            --surface-card-hover: #2a1a48;
            --text-primary: #f5f0fa;
            --text-secondary: #c9bae3;
            --text-muted: #8a7aa8;
            --border-color: #3a2a5a;
            --border-light: #4a3a6a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(240,165,0,0.15);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-light); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }
        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; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { color: var(--text-secondary); margin-bottom: 1rem; }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }
        .section { padding: var(--space-3xl) 0; }
        .section-title { text-align: center; margin-bottom: var(--space-2xl); }
        .section-title h2 { margin-bottom: var(--space-sm); }
        .section-title p { max-width: 600px; margin: 0 auto; color: var(--text-muted); font-size: 1.05rem; }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--space-sm);
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-outline:active { transform: translateY(0); }
        .btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; border-radius: var(--radius-sm); }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 5, 24, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            letter-spacing: 0.02em;
        }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--accent), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { color: var(--text-primary); }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: var(--space-lg);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
        }
        .nav-list a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--text-primary); background: rgba(240,165,0,0.08); }
        .nav-list a.active {
            color: var(--accent);
            background: rgba(240,165,0,0.12);
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta .btn { padding: 10px 22px; font-size: 0.9rem; }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); padding: var(--space-sm); }

        /* ===== Hero ===== */
        .hero {
            min-height: 88vh;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            margin-top: 68px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,5,24,0.88) 0%, rgba(26,10,46,0.75) 50%, rgba(13,5,24,0.92) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to top, var(--primary-dark), transparent);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; width: 100%; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--space-sm);
            background: rgba(240,165,0,0.15);
            border: 1px solid rgba(240,165,0,0.3);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent);
            margin-bottom: var(--space-lg);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1.15; margin-bottom: var(--space-lg); }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-secondary);
            max-width: 580px;
            margin-bottom: var(--space-xl);
        }
        .hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: var(--space-2xl);
            margin-top: var(--space-2xl);
            padding-top: var(--space-xl);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .hero-stat h3 { font-size: 1.8rem; color: var(--accent); }
        .hero-stat p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

        /* ===== Feature / Intro ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-lg);
        }
        .intro-card {
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            transition: all var(--transition);
        }
        .intro-card:hover {
            background: var(--surface-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .intro-card .icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(240,165,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: var(--space-md);
        }
        .intro-card h3 { margin-bottom: var(--space-sm); font-size: 1.15rem; }
        .intro-card p { font-size: 0.95rem; color: var(--text-muted); margin: 0; }

        /* ===== Category / Channel ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-lg);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            min-height: 280px;
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-light);
        }
        .category-card .card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--surface-card), transparent);
        }
        .category-card .card-body {
            padding: var(--space-md) var(--space-lg) var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 { font-size: 1.1rem; margin-bottom: var(--space-xs); }
        .category-card .card-body p { font-size: 0.9rem; color: var(--text-muted); margin: 0 0 var(--space-sm); flex: 1; }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.8rem;
            color: var(--accent);
            background: rgba(240,165,0,0.1);
            padding: 2px 12px;
            border-radius: 50px;
            align-self: flex-start;
        }

        /* ===== Latest Posts ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-lg);
        }
        .post-card {
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }
        .post-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .post-card .post-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .post-card .post-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .post-card:hover .post-img img { transform: scale(1.04); }
        .post-card .post-body { padding: var(--space-md) var(--space-lg) var(--space-lg); }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: var(--space-sm);
        }
        .post-card .post-meta .cat {
            background: rgba(240,165,0,0.12);
            color: var(--accent);
            padding: 1px 10px;
            border-radius: 50px;
        }
        .post-card .post-body h3 { font-size: 1.05rem; margin-bottom: var(--space-xs); }
        .post-card .post-body h3 a { color: var(--text-primary); }
        .post-card .post-body h3 a:hover { color: var(--accent); }
        .post-card .post-body p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }
        .post-card .post-body .post-date { font-size: 0.78rem; color: var(--text-muted); margin-top: var(--space-sm); display: block; }
        .posts-empty {
            text-align: center;
            padding: var(--space-3xl) var(--space-lg);
            background: var(--surface-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
            color: var(--text-muted);
        }
        .posts-empty i { font-size: 2rem; margin-bottom: var(--space-md); display: block; color: var(--text-muted); opacity: 0.5; }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--space-lg);
            text-align: center;
        }
        .stat-item {
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-md);
            transition: all var(--transition);
        }
        .stat-item:hover { border-color: var(--border-light); transform: translateY(-2px); }
        .stat-item .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-item .label { font-size: 0.95rem; color: var(--text-muted); margin-top: var(--space-xs); }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-lg);
            counter-reset: step;
        }
        .step-card {
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover { border-color: var(--border-light); transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-md);
        }
        .step-card h3 { font-size: 1.05rem; margin-bottom: var(--space-xs); }
        .step-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-sm); }
        .faq-item {
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-item summary {
            padding: var(--space-md) var(--space-lg);
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            font-size: 1rem;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-item .faq-answer {
            padding: 0 var(--space-lg) var(--space-md);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .faq-item .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--surface-card));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }
        .cta-content { max-width: 600px; margin: 0 auto; }
        .cta-content h2 { margin-bottom: var(--space-md); }
        .cta-content p { margin-bottom: var(--space-lg); color: var(--text-muted); }
        .cta-actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-color);
            padding: var(--space-3xl) 0 var(--space-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-2xl);
            margin-bottom: var(--space-2xl);
        }
        .footer-brand .logo { margin-bottom: var(--space-md); }
        .footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 320px; }
        .footer-social { display: flex; gap: var(--space-sm); margin-top: var(--space-md); }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--surface-card);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--primary-dark); border-color: var(--accent); }
        .footer-col h4 { font-size: 1rem; margin-bottom: var(--space-md); color: var(--text-primary); }
        .footer-col ul li { margin-bottom: var(--space-sm); }
        .footer-col ul li a { color: var(--text-muted); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            padding-top: var(--space-lg);
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-md);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Mobile Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .site-header .container { height: 60px; }
            .hero { min-height: 70vh; margin-top: 60px; }
            .hero-stats { flex-wrap: wrap; gap: var(--space-lg); }
            .hero-stat { flex: 1; min-width: 100px; }
            .mobile-toggle { display: block; }
            .nav-wrap {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(13,5,24,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: var(--space-lg);
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s ease;
                pointer-events: none;
                z-index: 999;
            }
            .nav-wrap.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: var(--space-xs);
            }
            .nav-list a { width: 100%; text-align: center; padding: 12px; }
            .nav-list a.active::after { display: none; }
            .nav-cta { width: 100%; }
            .nav-cta .btn { width: 100%; }
            .section { padding: var(--space-2xl) 0; }
            .intro-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .posts-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
            .footer-bottom { flex-direction: column; text-align: center; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; }
            .cta-actions { flex-direction: column; width: 100%; }
            .cta-actions .btn { width: 100%; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 0.95rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
            .stat-item .num { font-size: 1.8rem; }
            .container { padding: 0 var(--space-md); }
            .section-title h2 { font-size: 1.4rem; }
            .logo { font-size: 1.1rem; }
            .hero-badge { font-size: 0.75rem; padding: 4px 14px; }
            .faq-item summary { font-size: 0.9rem; padding: var(--space-md); }
            .faq-item .faq-answer { padding: 0 var(--space-md) var(--space-md); font-size: 0.85rem; }
        }

        /* ===== Utilities ===== */
        .gap-sm { gap: var(--space-sm); }
        .gap-md { gap: var(--space-md); }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .mt-lg { margin-top: var(--space-lg); }
        .mb-lg { margin-bottom: var(--space-lg); }
        .w-full { width: 100%; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0b8;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --accent-glow: rgba(244, 162, 97, 0.25);
            --bg-dark: #0b0f1a;
            --bg-section: #111827;
            --bg-card: #1a2235;
            --bg-card-hover: #1f2a42;
            --bg-input: #0f172a;
            --text-primary: #f1f5f9;
            --text-secondary: #cbd5e1;
            --text-muted: #94a3b8;
            --text-accent: #f4a261;
            --border-color: #2a3a5c;
            --border-light: #3a4a6c;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--text-accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad { padding: 80px 0; }
        .section-title {
            font-size: clamp(1.5rem, 4vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.6;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
            line-height: 1.2;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-2px);
        }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; border-radius: var(--radius-sm); }
        .btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn i { font-size: 1.1em; }

        /* ===== Tags / Badges ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            background: var(--primary);
            color: #fff;
        }
        .badge-secondary {
            background: rgba(69, 123, 157, 0.2);
            color: var(--secondary-light);
            border: 1px solid rgba(69, 123, 157, 0.3);
        }
        .badge-accent {
            background: rgba(244, 162, 97, 0.15);
            color: var(--text-accent);
            border: 1px solid rgba(244, 162, 97, 0.25);
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 500;
            background: rgba(255,255,255,0.06);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tag:hover { background: rgba(230,57,70,0.12); color: var(--primary); border-color: var(--primary); }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(42, 58, 92, 0.4);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text-primary); opacity: 0.9; }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list li a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-list li a:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.04);
        }
        .nav-list li a.active {
            color: #fff;
            background: rgba(230, 57, 70, 0.15);
        }
        .nav-list li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .nav-cta .btn i { font-size: 0.9em; }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a { color: var(--text-muted); }
        .breadcrumb-wrap a:hover { color: var(--primary); }
        .breadcrumb-wrap span { color: var(--text-secondary); }
        .breadcrumb-wrap i { margin: 0 8px; font-size: 0.65rem; vertical-align: middle; }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 40px;
            background: var(--bg-section);
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-header {
            position: relative;
            z-index: 1;
        }
        .article-header .badge { margin-bottom: 16px; }
        .article-header h1 {
            font-size: clamp(1.6rem, 4.5vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 12px;
        }
        .article-meta i { margin-right: 6px; color: var(--primary); }
        .article-meta .divider { width: 1px; height: 18px; background: var(--border-color); }

        /* ===== Article Content ===== */
        .article-main {
            padding: 48px 0 80px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .article-body h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 48px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body ul, .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body ol li { list-style: decimal; }
        .article-body strong { color: var(--text-primary); font-weight: 600; }
        .article-body a { color: var(--primary); border-bottom: 1px solid rgba(230,57,70,0.3); }
        .article-body a:hover { border-bottom-color: var(--primary); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(230,57,70,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }
        .article-body .img-caption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: -12px;
            margin-bottom: 24px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }

        /* ===== Article Sidebar / Related ===== */
        .article-sidebar-wrap {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-related-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(42,58,92,0.4);
            transition: var(--transition);
        }
        .sidebar-related-item:last-child { border-bottom: none; }
        .sidebar-related-item:hover { opacity: 0.8; }
        .sidebar-related-item img {
            width: 72px;
            height: 54px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-section);
        }
        .sidebar-related-item .info { flex: 1; min-width: 0; }
        .sidebar-related-item .info h4 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-related-item .info .meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 64px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo { font-size: 1.25rem; margin-bottom: 16px; }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary); }
        .footer-bottom i { margin: 0 4px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-sidebar-wrap { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .section-pad { padding: 56px 0; }
            .hamburger { display: flex; }
            .nav-wrap {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 20px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav-wrap.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: 4px;
            }
            .nav-list li a { width: 100%; padding: 12px 16px; }
            .nav-cta { width: 100%; }
            .nav-cta .btn { width: 100%; justify-content: center; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-hero { padding: 40px 0 28px; }
            .article-main { padding: 32px 0 56px; }
            .article-meta .divider { display: none; }
            .article-meta { gap: 12px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .section-pad { padding: 40px 0; }
            .article-body { font-size: 0.98rem; }
            .sidebar-card { padding: 20px; }
            .cta-section { padding: 40px 0; }
            .cta-btns .btn { width: 100%; justify-content: center; }
        }

        /* ===== Misc Utilities ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

/* roulang page: category1 */
/* ===== Design System ===== */
        :root {
            --clr-primary: #1a1a2e;
            --clr-primary-light: #252545;
            --clr-accent: #e8c06a;
            --clr-accent-hover: #f0d48a;
            --clr-accent-dark: #c9a34a;
            --clr-bg: #0d0d1a;
            --clr-bg-alt: #141428;
            --clr-card: #1e1e36;
            --clr-card-hover: #26264a;
            --clr-text: #f0e6d3;
            --clr-text-secondary: #b8aa98;
            --clr-text-muted: #7a7066;
            --clr-border: #2e2e50;
            --clr-border-light: #3e3e60;
            --clr-overlay: rgba(13, 13, 26, 0.82);
            --clr-glow: rgba(232, 192, 106, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(232, 192, 106, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text);
            background: var(--clr-bg);
            min-height: 100vh;
        }

        a {
            color: var(--clr-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--clr-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--clr-text);
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: all var(--transition);
            text-decoration: none;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 4px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dark));
            color: var(--clr-primary);
            border-color: var(--clr-accent);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--clr-accent-hover), var(--clr-accent));
            color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(232, 192, 106, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-glow);
        }

        .btn-outline {
            background: transparent;
            color: var(--clr-accent);
            border-color: var(--clr-accent);
        }
        .btn-outline:hover {
            background: var(--clr-accent);
            color: var(--clr-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
            border-radius: var(--radius-lg);
        }

        /* ===== Tags / Badges ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--clr-accent);
            color: var(--clr-primary);
        }
        .badge-ghost {
            background: rgba(232, 192, 106, 0.12);
            color: var(--clr-accent);
            border: 1px solid rgba(232, 192, 106, 0.25);
        }
        .badge-hot {
            background: #e74c3c;
            color: #fff;
        }
        .badge-new {
            background: #2ecc71;
            color: #fff;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 500;
            background: var(--clr-card);
            color: var(--clr-text-secondary);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--clr-card-hover);
            color: var(--clr-accent);
            border-color: var(--clr-accent);
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--clr-text), var(--clr-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            font-size: 17px;
            color: var(--clr-text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-header .badge {
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            z-index: 1000;
            background: rgba(13, 13, 26, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--clr-border);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--clr-text);
            text-decoration: none;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--clr-accent);
            font-size: 24px;
        }
        .logo span {
            color: var(--clr-accent);
        }
        .logo:hover {
            color: var(--clr-text);
        }

        /* Nav wrap (segmented tabs style) */
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(232, 192, 106, 0.06);
            padding: 4px;
            border-radius: 50px;
            border: 1px solid var(--clr-border);
        }
        .nav-list {
            display: flex;
            gap: 2px;
        }
        .nav-list li a {
            display: block;
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--clr-text-secondary);
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-list li a:hover {
            color: var(--clr-text);
            background: rgba(232, 192, 106, 0.08);
        }
        .nav-list li a.active {
            background: var(--clr-accent);
            color: var(--clr-primary);
            box-shadow: 0 4px 16px rgba(232, 192, 106, 0.25);
        }

        .nav-cta .btn {
            margin-left: 4px;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--clr-text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 820px) {
            .menu-toggle {
                display: flex;
            }
            .nav-wrap {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(13, 13, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                border-radius: 0;
                border: none;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s ease;
                gap: 16px;
            }
            .nav-wrap.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list {
                flex-direction: column;
                width: 100%;
                gap: 4px;
            }
            .nav-list li a {
                padding: 12px 20px;
                border-radius: var(--radius-md);
                text-align: center;
                font-size: 16px;
            }
            .nav-cta {
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
        }

        /* ===== Hero / Banner ===== */
        .hero-banner {
            position: relative;
            padding: 140px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: var(--clr-bg);
            overflow: hidden;
        }
        .hero-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.92) 40%, rgba(13, 13, 26, 0.6) 80%, transparent 100%);
            z-index: 1;
        }
        .hero-banner .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 720px;
        }
        .hero-content .badge {
            margin-bottom: 16px;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.1;
            margin-bottom: 16px;
        }
        .hero-content h1 span {
            color: var(--clr-accent);
        }
        .hero-content p {
            font-size: 18px;
            color: var(--clr-text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .hero-banner {
                padding: 110px 0 56px;
                min-height: 320px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-actions .btn {
                flex: 1;
                justify-content: center;
            }
        }

        /* ===== Category Cards (sub-categories) ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--clr-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-hover));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-accent);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--clr-card-hover);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(232, 192, 106, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--clr-accent);
            transition: all var(--transition);
        }
        .category-card:hover .icon-wrap {
            background: var(--clr-accent);
            color: var(--clr-primary);
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: 14px;
            color: var(--clr-text-secondary);
            line-height: 1.6;
        }
        .category-card .tag {
            margin-top: 14px;
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Ranking List ===== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--clr-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            cursor: default;
        }
        .ranking-item:hover {
            background: var(--clr-card-hover);
            border-color: var(--clr-border-light);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .ranking-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            background: rgba(232, 192, 106, 0.12);
            color: var(--clr-accent);
        }
        .ranking-item:nth-child(1) .ranking-num {
            background: var(--clr-accent);
            color: var(--clr-primary);
        }
        .ranking-item:nth-child(2) .ranking-num {
            background: rgba(232, 192, 106, 0.3);
            color: var(--clr-accent);
        }
        .ranking-item:nth-child(3) .ranking-num {
            background: rgba(232, 192, 106, 0.2);
            color: var(--clr-accent);
        }
        .ranking-info {
            flex: 1;
        }
        .ranking-info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .ranking-info p {
            font-size: 13px;
            color: var(--clr-text-muted);
        }
        .ranking-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            font-size: 13px;
            color: var(--clr-text-secondary);
        }
        .ranking-meta i {
            color: var(--clr-accent);
        }

        @media (max-width: 640px) {
            .ranking-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .ranking-meta {
                width: 100%;
                justify-content: flex-start;
                padding-left: 52px;
            }
        }

        /* ===== Article Cards Grid ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--clr-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .article-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-accent);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
        }
        .article-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--clr-primary-light);
        }
        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .article-card:hover .card-img img {
            transform: scale(1.05);
        }
        .article-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
        }
        .article-card .card-body {
            padding: 20px 22px 24px;
        }
        .article-card .card-body .tags {
            display: flex;
            gap: 6px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .article-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .article-card .card-body h3 a {
            color: var(--clr-text);
            text-decoration: none;
        }
        .article-card .card-body h3 a:hover {
            color: var(--clr-accent);
        }
        .article-card .card-body p {
            font-size: 14px;
            color: var(--clr-text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--clr-text-muted);
        }
        .article-card .card-meta i {
            color: var(--clr-accent);
            margin-right: 4px;
        }

        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Featured /专题 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .featured-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            background: var(--clr-card);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            border-color: var(--clr-accent);
            box-shadow: var(--shadow-lg);
        }
        .featured-card .fc-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .featured-card .fc-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .featured-card:hover .fc-bg img {
            transform: scale(1.05);
        }
        .featured-card .fc-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(13, 13, 26, 0.92) 20%, rgba(13, 13, 26, 0.4) 70%, transparent 100%);
            z-index: 1;
        }
        .featured-card .fc-content {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            height: 100%;
            min-height: 280px;
        }
        .featured-card .fc-content .badge {
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .featured-card .fc-content h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .featured-card .fc-content p {
            font-size: 14px;
            color: var(--clr-text-secondary);
            max-width: 420px;
            margin-bottom: 16px;
        }
        .featured-card .fc-content .btn {
            align-self: flex-start;
        }

        @media (max-width: 768px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .featured-card .fc-content h3 {
                font-size: 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-border-light);
        }
        .faq-item.open {
            border-color: var(--clr-accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--clr-accent);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--clr-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--clr-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-bg-alt);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url("/assets/images/backpic/back-2.png") center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            text-align: center;
            padding: 60px 40px;
            background: var(--clr-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--clr-border);
            box-shadow: var(--shadow-md);
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 17px;
            color: var(--clr-text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-box .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 15px;
            }
            .cta-box .btn-group .btn {
                flex: 1;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-alt);
            border-top: 1px solid var(--clr-border);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--clr-border);
        }
        .footer-brand .logo {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--clr-text-secondary);
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-text-secondary);
            font-size: 18px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--clr-accent);
            color: var(--clr-primary);
            border-color: var(--clr-accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--clr-text);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--clr-text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--clr-accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 13px;
            color: var(--clr-text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--clr-text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--clr-accent);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-border-light);
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .fade-up-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-up-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-up-delay-3 {
            animation-delay: 0.3s;
        }
        .fade-up-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--clr-text-muted);
            padding: 16px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--clr-text-secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--clr-accent);
        }
        .breadcrumb span {
            color: var(--clr-accent);
        }
        .breadcrumb i {
            font-size: 12px;
            color: var(--clr-text-muted);
        }

        /* ===== Responsive helpers ===== */
        @media (max-width: 1024px) {
            :root {
                --container-max: 100%;
            }
        }
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 30px;
            }
            .section-header h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
        }