/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #e84c1d;
            --primary-dark: #c73d14;
            --primary-light: #ff6b3d;
            --secondary: #1a2a6c;
            --secondary-light: #2d4a9e;
            --accent: #f59e0b;
            --bg-white: #ffffff;
            --bg-light: #f7f8fc;
            --bg-dark: #0f1724;
            --text-dark: #1e293b;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
            --transition: all 0.3s 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-white);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: 1rem; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text-dark); font-weight: 700; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
        h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); }
        h4 { font-size: clamp(1.1rem, 1.5vw, 1.3rem); }
        p { margin-bottom: 0.75rem; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-sm); }
        .section-padding { padding: var(--spacing-xl) 0; }
        .section-padding-md { padding: var(--spacing-lg) 0; }
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 6px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex: 1;
        }
        .nav-left { justify-content: flex-start; }
        .nav-right { justify-content: flex-end; }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            position: relative;
            letter-spacing: 0.01em;
        }
        .nav-link:hover { color: var(--primary); }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0.6rem;
            right: 0.6rem;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .logo-wrapper {
            flex-shrink: 0;
            text-align: center;
            padding: 0 1.5rem;
        }
        .logo-text {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .logo-text .logo-mark {
            display: inline-block;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            color: white;
            font-size: 1.1rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 0.25rem;
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            padding: 0.25rem;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 110;
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.4);
            z-index: 90;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.55;
            transform: scale(1.02);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.06); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,36,0.82) 0%, rgba(30,41,59,0.55) 60%, rgba(15,23,36,0.40) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: var(--spacing-md);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(232,76,29,0.18);
            backdrop-filter: blur(6px);
            color: #fcd1c0;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            border: 1px solid rgba(232,76,29,0.25);
            margin-bottom: 1.5rem;
            letter-spacing: 0.04em;
        }
        .hero-title {
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 1.2rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .hero-title .highlight { color: #fbbf24; }
        .hero-sub {
            color: rgba(241,245,249,0.85);
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 2.2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            box-shadow: 0 4px 18px rgba(232,76,29,0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(232,76,29,0.45);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            border: 2px solid rgba(255,255,255,0.35);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.6);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 3.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.12);
        }
        .hero-stat-item { text-align: center; }
        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fbbf24;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(241,245,249,0.65);
            font-weight: 400;
        }

        /* ===== Section Titles ===== */
        .section-title-wrap {
            text-align: center;
            max-width: 680px;
            margin: 0 auto var(--spacing-lg);
        }
        .section-title-wrap h2 { margin-bottom: 0.8rem; }
        .section-title-wrap .subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(232,76,29,0.08);
            padding: 0.25rem 1rem;
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 0.75rem;
            text-transform: uppercase;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body { padding: 1.2rem 1.4rem 1.5rem; }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
            line-height: 1.3;
        }
        .card-text {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-top: 0.8rem;
        }
        .card-meta .badge {
            display: inline-block;
            background: rgba(232,76,29,0.08);
            color: var(--primary);
            font-weight: 600;
            padding: 0.15rem 0.65rem;
            border-radius: 50px;
            font-size: 0.75rem;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 0.75rem;
            transition: var(--transition);
        }
        .card-link:hover { gap: 0.7rem; color: var(--primary-dark); }

        /* ===== Grid ===== */
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

        /* ===== Category Cards ===== */
        .cat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .cat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .cat-card-img {
            width: 100%;
            aspect-ratio: 16 / 12;
            object-fit: cover;
        }
        .cat-card-body { padding: 1.2rem 1rem 1.4rem; }
        .cat-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }
        .cat-card-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
        }
        .cat-card .btn-sm {
            display: inline-block;
            background: var(--primary);
            color: white;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.4rem 1.4rem;
            border-radius: 50px;
            transition: var(--transition);
        }
        .cat-card .btn-sm:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Features / Icon Blocks ===== */
        .feature-block {
            text-align: center;
            padding: 1.8rem 1.2rem;
            border-radius: var(--radius-md);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1rem;
            background: linear-gradient(135deg, rgba(232,76,29,0.08), rgba(245,158,11,0.08));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-block:hover .feature-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
        }
        .feature-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.4rem; }
        .feature-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

        /* ===== Stats / Data Blocks ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 1.8rem 1rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; margin-top: 0.2rem; }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.6rem;
            margin-bottom: 0.8rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover { border-color: var(--border); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
        }
        .faq-question i { color: var(--primary); font-size: 1.1rem; transition: var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding-top: 0.8rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a3e 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }
        .cta-content { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-white); margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(241,245,249,0.75); max-width: 520px; margin: 0 auto 1.8rem; font-size: 1.05rem; }
        .cta-section .btn-primary { background: linear-gradient(135deg, var(--accent), #d97706); box-shadow: 0 4px 18px rgba(245,158,11,0.35); }
        .cta-section .btn-primary:hover { box-shadow: 0 10px 32px rgba(245,158,11,0.45); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(241,245,249,0.7);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo-text { color: var(--text-white); margin-bottom: 0.8rem; }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; max-width: 320px; color: rgba(241,245,249,0.55); }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a { font-size: 0.9rem; color: rgba(241,245,249,0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(241,245,249,0.4);
        }
        .footer-socials { display: flex; gap: 0.8rem; }
        .footer-socials a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(241,245,249,0.5);
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--primary); color: white; }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb i { font-size: 0.65rem; color: var(--text-light); }

        /* ===== Post List (CMS) ===== */
        .post-list-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .post-list-item:last-child { border-bottom: none; }
        .post-list-item:hover { padding-left: 0.5rem; }
        .post-list-thumb {
            width: 160px;
            min-height: 100px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-light);
        }
        .post-list-info { flex: 1; }
        .post-list-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
            line-height: 1.3;
        }
        .post-list-title:hover { color: var(--primary); }
        .post-list-excerpt {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.4rem;
        }
        .post-list-meta {
            font-size: 0.82rem;
            color: var(--text-light);
            display: flex;
            gap: 1rem;
            align-items: center;
        }
        .post-list-meta .badge-cat {
            background: rgba(232,76,29,0.08);
            color: var(--primary);
            padding: 0.1rem 0.6rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
        }
        .empty-state i { font-size: 2.5rem; color: var(--text-light); margin-bottom: 0.8rem; }
        .empty-state p { font-size: 1rem; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .header-inner { height: 60px; justify-content: space-between; }
            .nav-left, .nav-right { display: none; }
            .logo-wrapper { padding: 0; }
            .mobile-toggle { display: block; }
            .mobile-menu-open .nav-left,
            .mobile-menu-open .nav-right {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                padding: 1rem 1.5rem 1.5rem;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border);
                z-index: 100;
                gap: 0.5rem;
                align-items: stretch;
            }
            .mobile-menu-open .nav-left { top: 60px; }
            .mobile-menu-open .nav-right { top: auto; bottom: auto; padding-top: 0; }
            .nav-link { padding: 0.6rem 0.8rem; font-size: 1rem; }
            .mobile-menu-overlay.active { display: block; }

            .hero { min-height: 70vh; }
            .hero-title { font-size: clamp(1.8rem, 6vw, 2.6rem); }
            .hero-sub { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-number { font-size: 1.6rem; }

            .grid-3 { grid-template-columns: repeat(1, 1fr); }
            .grid-2 { grid-template-columns: repeat(1, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }

            .post-list-item { flex-direction: column; }
            .post-list-thumb { width: 100%; height: 180px; }

            .section-padding { padding: var(--spacing-lg) 0; }
            .section-padding-md { padding: var(--spacing-md) 0; }

            .cta-section { padding: var(--spacing-md) var(--spacing-sm); }
        }

        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-stats { flex-direction: column; gap: 1rem; }
            .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
        }

        /* ===== Utility ===== */
        .bg-light-section { background-color: var(--bg-light); }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }
        .gap-1 { gap: 0.5rem; }
        .gap-2 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --success: #10b981;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-alt: #1e293b;
            --text: #1e293b;
            --text-light: #64748b;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-hover: 0 8px 30px rgba(37,99,235,0.12);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 70px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-light); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            box-shadow: 0 1px 8px rgba(0,0,0,0.04);
        }
        .header-inner {
            max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo-wrapper { flex: 0 0 auto; }
        .logo-text {
            display: flex; align-items: center; gap: 8px;
            font-size: 1.5rem; font-weight: 800; color: var(--text); letter-spacing: -0.5px;
        }
        .logo-text:hover { color: var(--primary); }
        .logo-mark {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff; font-size: 1.2rem; font-weight: 800;
        }
        .nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
        .nav-link {
            display: inline-block; padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 500; color: var(--text-light);
            transition: var(--transition); position: relative;
        }
        .nav-link:hover { color: var(--primary); background: var(--primary-light); }
        .nav-link.active {
            color: var(--primary); background: var(--primary-light);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 3px;
            background: var(--primary);
        }
        .mobile-toggle {
            display: none; background: none; border: none; font-size: 1.5rem;
            color: var(--text); cursor: pointer; padding: 4px 8px;
            border-radius: var(--radius-sm); transition: var(--transition);
        }
        .mobile-toggle:hover { background: var(--border-light); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative; padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12; z-index: 0;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero .breadcrumb {
            display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
            font-size: 0.9rem; color: rgba(255,255,255,0.6);
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.9); }
        .article-hero .breadcrumb i { font-size: 0.7rem; color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.4rem; color: #fff; max-width: 860px;
            margin-bottom: 18px; line-height: 1.3;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; align-items: center; gap: 18px;
            color: rgba(255,255,255,0.7); font-size: 0.92rem;
        }
        .article-meta .badge {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: var(--accent); color: #fff; font-size: 0.8rem; font-weight: 600;
        }
        .article-meta i { margin-right: 5px; }

        /* ===== Article Body ===== */
        .article-section { padding: 50px 0 70px; }
        .article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
        .article-main { min-width: 0; }
        .article-body {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 40px; box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-body .featured-img {
            width: 100%; border-radius: var(--radius); margin-bottom: 30px;
            max-height: 480px; object-fit: cover;
        }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.85; color: var(--text);
        }
        .article-body .content p { margin-bottom: 1.2rem; }
        .article-body .content h2 { margin-top: 2rem; margin-bottom: 0.8rem; font-size: 1.6rem; }
        .article-body .content h3 { margin-top: 1.6rem; margin-bottom: 0.6rem; font-size: 1.25rem; }
        .article-body .content ul, .article-body .content ol {
            margin-bottom: 1.2rem; padding-left: 1.6rem;
        }
        .article-body .content li { margin-bottom: 0.4rem; color: var(--text-light); list-style: disc; }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); background: var(--primary-light);
            padding: 16px 24px; margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic; color: var(--text);
        }
        .article-body .content img { border-radius: var(--radius); margin: 1.5rem 0; }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-footer-meta {
            display: flex; justify-content: space-between; align-items: center;
            margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border);
            flex-wrap: wrap; gap: 16px;
        }
        .article-footer-meta .tags { display: flex; gap: 8px; flex-wrap: wrap; }
        .article-footer-meta .tags a {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            background: var(--border-light); color: var(--text-light); font-size: 0.82rem;
            transition: var(--transition);
        }
        .article-footer-meta .tags a:hover { background: var(--primary-light); color: var(--primary); }
        .article-footer-meta .share { display: flex; align-items: center; gap: 12px; }
        .article-footer-meta .share span { font-size: 0.9rem; color: var(--text-light); }
        .article-footer-meta .share a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: var(--border-light); color: var(--text-light);
            transition: var(--transition);
        }
        .article-footer-meta .share a:hover { background: var(--primary); color: #fff; }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            padding: 28px; box-shadow: var(--shadow); border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 1.1rem; margin-bottom: 18px; padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light); display: flex; align-items: center; gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li { margin-bottom: 14px; }
        .sidebar-list a {
            display: flex; gap: 14px; align-items: flex-start;
            color: var(--text); transition: var(--transition);
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list .thumb {
            width: 72px; height: 54px; border-radius: var(--radius-sm);
            object-fit: cover; flex-shrink: 0; background: var(--border-light);
        }
        .sidebar-list .info { flex: 1; min-width: 0; }
        .sidebar-list .info .title { font-size: 0.92rem; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 4px; }
        .sidebar-list .info .date { font-size: 0.78rem; color: var(--text-light); }

        /* ===== Related Section ===== */
        .related-section { padding: 50px 0; background: var(--bg); border-top: 1px solid var(--border); }
        .related-section h2 { text-align: center; margin-bottom: 36px; font-size: 1.7rem; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card .body { padding: 18px 20px 20px; }
        .related-card .body .cat {
            display: inline-block; padding: 2px 12px; border-radius: 12px;
            background: var(--primary-light); color: var(--primary); font-size: 0.75rem; font-weight: 600;
            margin-bottom: 8px;
        }
        .related-card .body h3 { font-size: 1rem; margin-bottom: 6px; }
        .related-card .body h3 a { color: var(--text); }
        .related-card .body h3 a:hover { color: var(--primary); }
        .related-card .body p { font-size: 0.88rem; margin-bottom: 0; }

        /* ===== CTA ===== */
        .article-cta {
            padding: 60px 0; background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
            text-align: center; position: relative; overflow: hidden;
        }
        .article-cta::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08; z-index: 0;
        }
        .article-cta .container { position: relative; z-index: 1; }
        .article-cta h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
        .article-cta p { color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
        .article-cta .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: var(--radius-sm); font-weight: 600;
            font-size: 0.95rem; border: none; cursor: pointer;
            transition: var(--transition); text-decoration: none;
        }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,0.30); }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
        .btn-accent { background: var(--accent); color: #fff; }
        .btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 0; font-size: 0.92rem;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand p { color: rgba(255,255,255,0.55); max-width: 320px; font-size: 0.9rem; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a { color: rgba(255,255,255,0.6); transition: var(--transition); }
        .footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.08);
            flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.45);
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.5);
            transition: var(--transition); font-size: 1.1rem;
        }
        .footer-socials a:hover { background: var(--primary); color: #fff; }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center; padding: 80px 20px; max-width: 600px; margin: 0 auto;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 24px; display: block; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { font-size: 1.05rem; margin-bottom: 28px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }

        @media (max-width: 768px) {
            :root { --header-h: 60px; }
            .nav-left, .nav-right { display: none; }
            .mobile-toggle { display: block; }
            .nav-left.open, .nav-right.open {
                display: flex; flex-direction: column; position: absolute; top: var(--header-h);
                left: 0; right: 0; background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px); border-bottom: 1px solid var(--border);
                padding: 12px 20px; gap: 4px; box-shadow: var(--shadow-lg); z-index: 999;
            }
            .nav-left.open { top: var(--header-h); }
            .nav-right.open { top: calc(var(--header-h) + 180px); }
            .nav-link { padding: 10px 16px; width: 100%; }
            .nav-link.active::after { display: none; }
            .article-hero { padding: 40px 0 28px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 24px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            h1 { font-size: 1.7rem; }
            h2 { font-size: 1.4rem; }
            .container { padding: 0 16px; }
        }

        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.35rem; }
            .article-body { padding: 16px; }
            .article-meta { gap: 10px; font-size: 0.82rem; flex-wrap: wrap; }
            .btn { padding: 10px 20px; font-size: 0.88rem; }
            .related-card img { height: 140px; }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.6s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b76;
            --accent: #f4a261;
            --accent-light: #ffd6a8;
            --bg: #fafafa;
            --bg-card: #ffffff;
            --bg-dark: #1d1d2b;
            --bg-section: #f5f0eb;
            --text: #1a1a2e;
            --text-light: #6b6b80;
            --text-white: #fefefe;
            --border: #e8e4ef;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.10);
            --shadow-btn: 0 4px 14px rgba(230, 57, 70, 0.30);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: 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(--text);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            margin-bottom: 0.8rem;
            color: var(--text-light);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .logo-wrapper {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
        }
        .logo-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo-text:hover {
            color: var(--primary);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            z-index: 1001;
        }
        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.30) 0%, rgba(0, 0, 0, 0.60) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .hero-content h1 {
            color: var(--text-white);
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.30);
        }
        .hero-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.20);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .hero-tags span {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            color: rgba(255, 255, 255, 0.90);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section);
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto 8px;
            font-size: 1.05rem;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 32px;
        }

        /* ===== 分类标签 ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 48px;
        }
        .category-tab {
            padding: 8px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
        }
        .category-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .category-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.30);
        }

        /* ===== 文章卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .article-card .card-img {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e8e4ef;
        }
        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .article-card:hover .card-img img {
            transform: scale(1.05);
        }
        .article-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
        }
        .article-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text);
            transition: var(--transition);
        }
        .article-card:hover .card-body h3 {
            color: var(--primary);
        }
        .article-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }
        .article-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-card .card-meta i {
            font-size: 0.75rem;
            color: var(--primary);
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-card);
            padding: 16px 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .rank-item:hover {
            transform: translateX(4px);
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
        }
        .rank-number {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: #fff;
            background: var(--primary);
        }
        .rank-item:nth-child(1) .rank-number {
            background: linear-gradient(135deg, #e63946, #f4a261);
        }
        .rank-item:nth-child(2) .rank-number {
            background: linear-gradient(135deg, #e63946, #c1121f);
        }
        .rank-item:nth-child(3) .rank-number {
            background: linear-gradient(135deg, #f4a261, #e76f51);
        }
        .rank-item:nth-child(4) .rank-number {
            background: linear-gradient(135deg, #457b9d, #1d3557);
        }
        .rank-content h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .rank-content span {
            font-size: 0.82rem;
            color: var(--text-light);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            padding: 32px 16px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
        }
        .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* ===== 特色专区 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .featured-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
            padding: 32px;
            background: #1a1a2e;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-card:hover {
            transform: scale(1.01);
            box-shadow: var(--shadow-hover);
        }
        .featured-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.40;
            transition: var(--transition);
        }
        .featured-card:hover img {
            opacity: 0.55;
            transform: scale(1.04);
        }
        .featured-card .featured-overlay {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 90%;
        }
        .featured-card .featured-overlay h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .featured-card .featured-overlay p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 0.92rem;
            margin-bottom: 12px;
        }
        .featured-card .featured-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.20);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: var(--transition);
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 1.05rem;
            margin-bottom: 32px;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.40);
            color: #fff;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.30);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.60);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-socials {
            display: flex;
            gap: 14px;
        }
        .footer-socials a {
            color: rgba(255, 255, 255, 0.40);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            color: var(--accent);
            transform: scale(1.15);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-left,
            .nav-right {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
                z-index: 999;
            }
            .nav-left.open,
            .nav-right.open {
                display: flex;
            }
            .nav-left {
                top: calc(var(--header-h) + 0px);
            }
            .nav-right {
                top: calc(var(--header-h) + 180px);
            }
            .nav-link {
                padding: 12px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(230, 57, 70, 0.10);
            }
            .logo-wrapper {
                position: relative;
                left: auto;
                top: auto;
                transform: none;
            }
            .header-inner {
                justify-content: space-between;
            }
            .page-hero {
                min-height: 240px;
                padding: 60px 20px 40px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .rank-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .featured-card {
                min-height: 220px;
                padding: 24px;
            }
            .featured-card .featured-overlay h3 {
                font-size: 1.1rem;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .btn {
                padding: 12px 28px;
                font-size: 0.92rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .category-tabs {
                gap: 6px;
            }
            .category-tab {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .rank-item {
                padding: 12px 14px;
                gap: 12px;
            }
            .rank-number {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
        }