/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0c4;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-dark: #0d1b2a;
            --bg-mid: #1b2838;
            --bg-card: #1e2d3d;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-light: #e8e8f0;
            --text-white: #ffffff;
            --border: #e0e0ec;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
            --shadow-glow: 0 0 30px rgba(230,57,70,0.25);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 5rem;
            --spacing-block: 2.5rem;
            --container-max: 1200px;
            --container-narrow: 900px;
        }

        /* ===== 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: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; transition: var(--transition); }
        input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: 2px solid var(--border); border-radius: var(--radius-sm); padding: 0.7rem 1.2rem; transition: var(--transition); }
        input:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(230,57,70,0.12); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
        h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }
        .container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 1.5rem; }
        .section { padding: var(--spacing-section) 0; position: relative; }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--primary); border-radius: 4px; margin: 0.75rem auto 0; }
        .section-title p { font-size: 1.1rem; max-width: 600px; margin: 0.75rem auto 0; color: var(--text-muted); }
        .text-center { text-align: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

        /* ===== Button System ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 0.5rem;
            padding: 0.75rem 2rem; font-size: 1rem; font-weight: 600;
            border-radius: var(--radius-md); transition: var(--transition);
            border: 2px solid transparent; position: relative; overflow: hidden;
        }
        .btn-primary { background: var(--primary); color: var(--text-white); border-color: var(--primary); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-outline { background: transparent; color: var(--text-white); border-color: var(--text-white); }
        .btn-outline:hover { background: var(--text-white); color: var(--primary); transform: translateY(-2px); }
        .btn-light { background: var(--text-white); color: var(--primary); border-color: var(--text-white); }
        .btn-light:hover { background: var(--bg-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; border-radius: var(--radius-sm); }
        .btn-lg { padding: 1rem 2.5rem; font-size: 1.15rem; border-radius: var(--radius-lg); }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block; padding: 0.25rem 0.85rem; font-size: 0.75rem; font-weight: 600;
            border-radius: 50px; letter-spacing: 0.3px; text-transform: uppercase;
        }
        .badge-primary { background: var(--primary-light); color: var(--primary-dark); }
        .badge-secondary { background: rgba(69,123,157,0.15); color: var(--secondary-light); }
        .badge-hot { background: #fee2e2; color: #b91c1c; }
        .badge-new { background: #d1fae5; color: #065f46; }

        /* ===== Card System ===== */
        .card {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); transition: var(--transition);
            overflow: hidden; border: 1px solid var(--border-light);
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .card-body { padding: 1.5rem; }
        .card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-primary); }
        .card-text { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 1rem; }
        .card-meta { display: flex; align-items: center; gap: 1rem; font-size: 0.85rem; color: var(--text-muted); }

        /* ===== Grid ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-between { display: flex; align-items: center; justify-content: space-between; }
        .gap-1 { gap: 1rem; }
        .gap-2 { gap: 2rem; }

        /* ===== Header / Navigation (Floating Dock) ===== */
        .site-header {
            position: fixed; top: 1.25rem; left: 0; right: 0; z-index: 1000;
            pointer-events: none; padding: 0 1.5rem;
        }
        .nav-dock {
            max-width: 1100px; margin: 0 auto;
            display: flex; align-items: center; justify-content: space-between;
            background: rgba(255,255,255,0.85); backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-radius: var(--radius-xl); padding: 0.65rem 1.5rem;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.04);
            border: 1px solid rgba(255,255,255,0.5);
            pointer-events: auto; transition: var(--transition);
        }
        .nav-dock:hover { box-shadow: 0 8px 40px rgba(0,0,0,0.10); }
        .nav-logo { font-size: 1.35rem; font-weight: 800; color: var(--text-primary); display: flex; align-items: center; gap: 0.5rem; }
        .nav-logo .logo-icon { width: 36px; height: 36px; background: var(--primary); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem; }
        .nav-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links { display: flex; align-items: center; gap: 0.25rem; }
        .nav-links a {
            padding: 0.5rem 1.1rem; border-radius: var(--radius-md); font-size: 0.9rem; font-weight: 500;
            color: var(--text-secondary); transition: var(--transition); position: relative;
        }
        .nav-links a:hover { background: rgba(230,57,70,0.08); color: var(--primary); }
        .nav-links a.active { background: var(--primary); color: var(--text-white); }
        .nav-actions { display: flex; align-items: center; gap: 0.75rem; }
        .nav-search { position: relative; }
        .nav-search input {
            padding: 0.5rem 1rem 0.5rem 2.3rem; font-size: 0.85rem; border-radius: 50px;
            border: 1px solid var(--border); background: var(--bg-light); width: 180px;
        }
        .nav-search input:focus { width: 240px; border-color: var(--primary); }
        .nav-search i { position: absolute; left: 0.85rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.85rem; }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); padding: 0.25rem; background: none; border: none; }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.5); backdrop-filter: blur(8px); z-index: 999;
            padding: 5rem 1.5rem 2rem; pointer-events: auto;
        }
        .mobile-menu.open { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
        .mobile-menu a {
            display: block; width: 100%; max-width: 320px; text-align: center;
            padding: 1rem 1.5rem; font-size: 1.15rem; font-weight: 600;
            color: var(--text-white); border-radius: var(--radius-md);
            background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
        }
        .mobile-menu a:hover { background: rgba(255,255,255,0.16); }
        .mobile-menu a.active { background: var(--primary); border-color: var(--primary); }
        .mobile-close { position: absolute; top: 1.5rem; right: 1.5rem; color: #fff; font-size: 2rem; background: none; border: none; }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh; display: flex; align-items: center; justify-content: center;
            position: relative; overflow: hidden; padding: 8rem 1.5rem 4rem;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35; transform: scale(1.05);
        }
        .hero-overlay {
            position: absolute; inset: 0; z-index: 1;
            background: linear-gradient(135deg, rgba(13,27,42,0.92) 0%, rgba(13,27,42,0.70) 50%, rgba(230,57,70,0.20) 100%);
        }
        .hero-content { position: relative; z-index: 2; max-width: 800px; text-align: center; }
        .hero-badge { display: inline-block; padding: 0.4rem 1.5rem; border-radius: 50px; background: rgba(230,57,70,0.25); color: var(--primary-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 1.5rem; border: 1px solid rgba(230,57,70,0.3); }
        .hero h1 { color: var(--text-white); margin-bottom: 1.25rem; font-weight: 800; letter-spacing: -0.02em; }
        .hero h1 .highlight { background: linear-gradient(135deg, #f4a261, #e63946); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 2rem; line-height: 1.8; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
        .hero-stats { display: flex; flex-wrap: wrap; gap: 2.5rem; justify-content: center; margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.08); }
        .hero-stat { text-align: center; }
        .hero-stat-number { font-size: 2rem; font-weight: 800; color: var(--text-white); }
        .hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin-top: 0.15rem; }

        /* ===== Intro Section ===== */
        .intro-section { background: var(--bg-white); }
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
        .intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
        .intro-image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, transparent 60%, rgba(230,57,70,0.15)); pointer-events: none; }
        .intro-text h2 { margin-bottom: 1.25rem; }
        .intro-text p { font-size: 1.05rem; line-height: 1.8; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
        .intro-feature { display: flex; align-items: center; gap: 0.75rem; font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); }
        .intro-feature i { color: var(--primary); font-size: 1.1rem; width: 24px; text-align: center; }

        /* ===== Category Section ===== */
        .category-section { background: var(--bg-light); }
        .category-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
        .category-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--bg-white); box-shadow: var(--shadow-sm);
            transition: var(--transition); border: 1px solid var(--border-light);
            cursor: pointer;
        }
        .category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .category-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .category-card-overlay {
            position: absolute; bottom: 0; left: 0; right: 0;
            padding: 2rem 1.5rem 1.5rem;
            background: linear-gradient(transparent, rgba(0,0,0,0.7));
            color: var(--text-white);
        }
        .category-card-overlay h3 { color: var(--text-white); font-size: 1.3rem; margin-bottom: 0.25rem; }
        .category-card-overlay p { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin: 0; }
        .category-card .badge { position: absolute; top: 1rem; left: 1rem; z-index: 2; }

        /* ===== Stats / Data Section ===== */
        .stats-section {
            background: var(--bg-dark); position: relative; overflow: hidden;
        }
        .stats-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
        }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; position: relative; z-index: 1; }
        .stat-card { text-align: center; padding: 2rem 1rem; }
        .stat-card i { font-size: 2.5rem; color: var(--primary); margin-bottom: 1rem; }
        .stat-card .number { font-size: 2.8rem; font-weight: 800; color: var(--text-white); line-height: 1.2; }
        .stat-card .label { font-size: 0.95rem; color: rgba(255,255,255,0.6); margin-top: 0.5rem; }

        /* ===== News / List Section ===== */
        .news-section { background: var(--bg-white); }
        .news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.75rem; }
        .news-card { display: flex; flex-direction: column; 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); }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .news-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .news-card-body { padding: 1.25rem 1.5rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
        .news-card-body .badge { align-self: flex-start; margin-bottom: 0.75rem; }
        .news-card-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; flex: 1; }
        .news-card-body h3 a { color: var(--text-primary); }
        .news-card-body h3 a:hover { color: var(--primary); }
        .news-card-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 1rem; flex: 1; }
        .news-card-footer { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); border-top: 1px solid var(--border-light); padding-top: 0.75rem; }
        .news-empty { grid-column: 1 / -1; text-align: center; padding: 3rem 1rem; color: var(--text-muted); font-size: 1.1rem; background: var(--bg-light); border-radius: var(--radius-md); }

        /* ===== Process Section ===== */
        .process-section { background: var(--bg-light); }
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; position: relative; }
        .process-steps::before { content: ''; position: absolute; top: 3rem; left: 15%; right: 15%; height: 2px; background: linear-gradient(90deg, var(--primary), var(--secondary-light)); z-index: 0; }
        .step-card { text-align: center; padding: 2rem 1rem; background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); position: relative; z-index: 1; transition: var(--transition); }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-number { width: 56px; height: 56px; margin: 0 auto 1rem; background: var(--primary); color: var(--text-white); font-size: 1.5rem; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 16px rgba(230,57,70,0.3); }
        .step-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
        .step-card p { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }

        /* ===== FAQ Section ===== */
        .faq-section { background: var(--bg-white); }
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item { background: var(--bg-light); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-light); transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { width: 100%; padding: 1.25rem 1.75rem; display: flex; align-items: center; justify-content: space-between; font-size: 1rem; font-weight: 600; color: var(--text-primary); background: none; border: none; text-align: left; cursor: pointer; }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 1.75rem 1.25rem; display: none; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.8; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-dark); position: relative; overflow: hidden;
            padding: 5rem 0; text-align: center;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
        }
        .cta-content { position: relative; z-index: 1; max-width: 650px; margin: 0 auto; }
        .cta-content h2 { color: var(--text-white); font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 1rem; }
        .cta-content p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 2rem; }
        .cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

        /* ===== Footer ===== */
        .site-footer { background: var(--bg-mid); color: rgba(255,255,255,0.7); padding: 3rem 0 2rem; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2rem; }
        .footer-brand .nav-logo { color: var(--text-white); margin-bottom: 0.75rem; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 280px; }
        .footer-col h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 1.25rem; }
        .footer-col a { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.6); padding: 0.35rem 0; }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-divider { border: none; height: 1px; background: rgba(255,255,255,0.08); margin: 1.5rem 0; }
        .footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; font-size: 0.85rem; color: rgba(255,255,255,0.45); }
        .footer-socials { display: flex; gap: 0.75rem; }
        .footer-socials a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 1.1rem; transition: var(--transition); }
        .footer-socials a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .process-steps::before { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-image { order: -1; }
        }

        @media (max-width: 768px) {
            .nav-links, .nav-search { display: none; }
            .nav-toggle { display: block; }
            .nav-dock { padding: 0.5rem 1.25rem; }
            .site-header { top: 0.75rem; padding: 0 1rem; }
            .hero { padding: 6rem 1rem 3rem; min-height: 90vh; }
            .hero h1 { font-size: clamp(1.8rem, 8vw, 2.6rem); }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-number { font-size: 1.5rem; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
            .category-cards { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
            .process-steps { grid-template-columns: 1fr 1fr; gap: 1rem; }
            .news-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .intro-features { grid-template-columns: 1fr; }
            .section { padding: 3rem 0; }
            :root { --spacing-section: 3rem; }
        }

        @media (max-width: 520px) {
            .hero { min-height: 85vh; padding: 5rem 1rem 2rem; }
            .hero h1 { font-size: 1.6rem; }
            .hero p { font-size: 0.9rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .stat-card { padding: 1.25rem 0.5rem; }
            .stat-card .number { font-size: 2rem; }
            .process-steps { grid-template-columns: 1fr; }
            .nav-dock { padding: 0.4rem 1rem; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
            .faq-question { font-size: 0.9rem; padding: 1rem 1.25rem; }
            .faq-answer { padding: 0 1.25rem 1rem; }
            .cta-section { padding: 3rem 0; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-body: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1d3557;
            --bg-footer: #0d1b2a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f3f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --shadow-hover: 0 16px 48px rgba(230,57,70,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --max-width: 1200px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== 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-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input { font-family: inherit; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { color: var(--text-secondary); margin-bottom: 0.5rem; }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

        /* ===== Floating Dock Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .nav-dock {
            max-width: 1100px; margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }
        .nav-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800; color: var(--text-primary);
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(230,57,70,0.3);
        }
        .nav-links {
            display: flex; align-items: center; gap: 4px;
            background: var(--bg-body);
            padding: 4px 6px;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
        }
        .nav-links a {
            padding: 8px 20px; border-radius: var(--radius-xl);
            font-size: 0.92rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); white-space: nowrap;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-links a.active {
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 14px rgba(230,57,70,0.35);
        }
        .nav-actions { display: flex; align-items: center; gap: 14px; }
        .nav-search {
            display: flex; align-items: center; gap: 8px;
            background: var(--bg-body); border: 1px solid var(--border-light);
            border-radius: var(--radius-xl); padding: 6px 16px;
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230,57,70,0.12); }
        .nav-search i { color: var(--text-light); font-size: 0.9rem; }
        .nav-search input {
            border: none; background: transparent; outline: none;
            font-size: 0.9rem; color: var(--text-primary); width: 120px;
        }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); padding: 6px 10px; border-radius: var(--radius-sm); }

        /* ===== Article Hero Banner ===== */
        .article-hero {
            position: relative;
            min-height: 360px;
            display: flex; align-items: flex-end;
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            overflow: hidden;
            padding: 60px 0 40px;
        }
        .article-hero::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25; mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
            font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 16px;
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb .sep { color: rgba(255,255,255,0.3); }
        .article-hero h1 {
            color: #fff; font-size: 2.6rem; max-width: 800px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
            line-height: 1.2;
        }
        .article-hero .meta-line {
            display: flex; flex-wrap: wrap; gap: 20px; margin-top: 16px;
            color: rgba(255,255,255,0.7); font-size: 0.92rem;
        }
        .article-hero .meta-line span { display: flex; align-items: center; gap: 6px; }
        .article-hero .meta-line i { color: var(--primary-light); }
        .article-hero .category-tag {
            display: inline-block; padding: 4px 16px;
            background: var(--primary); color: #fff; border-radius: var(--radius-xl);
            font-size: 0.82rem; font-weight: 600;
        }

        /* ===== Article Main Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid; grid-template-columns: 1fr 300px; gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            padding: 40px 48px;
        }
        .article-body .featured-image {
            width: 100%; border-radius: var(--radius-sm); margin-bottom: 32px;
            object-fit: cover; max-height: 480px;
        }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.85; color: var(--text-primary);
        }
        .article-body .content p { margin-bottom: 1.2rem; color: var(--text-secondary); }
        .article-body .content h2 { font-size: 1.6rem; margin: 2rem 0 1rem; }
        .article-body .content h3 { font-size: 1.25rem; margin: 1.6rem 0 0.8rem; }
        .article-body .content ul, .article-body .content ol { margin: 1rem 0 1.2rem 1.6rem; color: var(--text-secondary); }
        .article-body .content li { margin-bottom: 0.5rem; }
        .article-body .content a { color: var(--primary); border-bottom: 1px solid transparent; }
        .article-body .content a:hover { border-bottom-color: var(--primary); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px;
            margin: 1.6rem 0; background: rgba(230,57,70,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary); font-style: italic;
        }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.2rem 0; }
        .article-body .content .highlight-box {
            background: linear-gradient(135deg, rgba(230,57,70,0.06), rgba(69,123,157,0.06));
            border: 1px solid var(--border-color); border-radius: var(--radius-sm);
            padding: 20px 24px; margin: 1.6rem 0;
        }
        .article-body .content .highlight-box strong { color: var(--primary); }
        .article-body .content .btn-link {
            display: inline-block; margin-top: 0.5rem;
            padding: 8px 24px; background: var(--primary); color: #fff;
            border-radius: var(--radius-xl); font-weight: 600; font-size: 0.9rem;
            border: none; transition: var(--transition);
        }
        .article-body .content .btn-link:hover {
            background: var(--primary-dark); transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230,57,70,0.3); color: #fff;
        }
        .article-tags {
            display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px;
            padding-top: 24px; border-top: 1px solid var(--border-color);
        }
        .article-tags .tag {
            padding: 4px 16px; background: var(--bg-body);
            border: 1px solid var(--border-color); border-radius: var(--radius-xl);
            font-size: 0.82rem; color: var(--text-secondary); transition: var(--transition);
        }
        .article-tags .tag:hover { border-color: var(--primary); color: var(--primary); background: rgba(230,57,70,0.04); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); padding: 28px 24px;
        }
        .sidebar-card h3 {
            font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 12px;
            border-bottom: 2px solid var(--primary); display: inline-block;
        }
        .sidebar-card .related-list { display: flex; flex-direction: column; gap: 14px; }
        .sidebar-card .related-item {
            display: flex; gap: 12px; align-items: flex-start;
            padding: 10px 12px; border-radius: var(--radius-sm);
            transition: var(--transition); cursor: pointer;
        }
        .sidebar-card .related-item:hover { background: var(--bg-body); }
        .sidebar-card .related-item img {
            width: 64px; height: 48px; object-fit: cover; border-radius: 6px; flex-shrink: 0;
        }
        .sidebar-card .related-item .info { flex: 1; }
        .sidebar-card .related-item .info h4 { font-size: 0.92rem; font-weight: 600; margin-bottom: 2px; }
        .sidebar-card .related-item .info span { font-size: 0.78rem; color: var(--text-light); }
        .sidebar-card .cta-box {
            text-align: center; padding: 16px 0 8px;
        }
        .sidebar-card .cta-box p { font-size: 0.92rem; margin-bottom: 12px; color: var(--text-secondary); }
        .sidebar-card .cta-btn {
            display: inline-block; padding: 10px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; border-radius: var(--radius-xl); font-weight: 600;
            transition: var(--transition); box-shadow: 0 4px 16px rgba(230,57,70,0.3);
        }
        .sidebar-card .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(230,57,70,0.4); color: #fff; }

        /* ===== Error State ===== */
        .error-state {
            text-align: center; padding: 80px 20px; min-height: 400px;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
        }
        .error-state i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
        .error-state h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .error-state p { color: var(--text-secondary); margin-bottom: 24px; }
        .error-state .back-btn {
            padding: 12px 36px; background: var(--primary); color: #fff;
            border-radius: var(--radius-xl); font-weight: 600; transition: var(--transition);
        }
        .error-state .back-btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer); color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.5); max-width: 280px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col a {
            display: block; color: rgba(255,255,255,0.5); font-size: 0.9rem;
            padding: 4px 0; transition: var(--transition);
        }
        .footer-col a:hover { color: #fff; padding-left: 4px; }
        .footer-divider { border: none; border-top: 1px solid rgba(255,255,255,0.08); margin: 0; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-socials { display: flex; gap: 16px; }
        .footer-socials a {
            color: rgba(255,255,255,0.4); font-size: 1.2rem; transition: var(--transition);
        }
        .footer-socials a:hover { color: #fff; transform: translateY(-2px); }

        /* ===== Mobile Menu ===== */
        .mobile-menu-overlay {
            display: none; position: fixed; inset: 0; z-index: 2000;
            background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
        }
        .mobile-menu-overlay.open { display: block; }
        .mobile-menu-panel {
            position: fixed; top: 0; right: -320px; width: 300px; height: 100%;
            background: var(--bg-card); z-index: 2001; padding: 24px;
            box-shadow: var(--shadow-lg); transition: right 0.3s ease;
            overflow-y: auto;
        }
        .mobile-menu-panel.open { right: 0; }
        .mobile-menu-panel .close-btn {
            display: flex; justify-content: flex-end; font-size: 1.6rem;
            color: var(--text-primary); margin-bottom: 24px;
        }
        .mobile-menu-panel .mobile-nav-links { display: flex; flex-direction: column; gap: 6px; }
        .mobile-menu-panel .mobile-nav-links a {
            padding: 12px 16px; border-radius: var(--radius-sm);
            font-size: 1rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition);
        }
        .mobile-menu-panel .mobile-nav-links a:hover { background: var(--bg-body); color: var(--primary); }
        .mobile-menu-panel .mobile-nav-links a.active { background: rgba(230,57,70,0.08); color: var(--primary); font-weight: 600; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-hero h1 { font-size: 2.2rem; }
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-body { padding: 32px 28px; }
        }
        @media (max-width: 768px) {
            body { padding-top: 64px; }
            :root { --nav-height: 64px; }
            .nav-links { display: none; }
            .nav-search { display: none; }
            .nav-toggle { display: block; }
            .nav-dock { padding: 0 16px; }
            .article-hero { min-height: 280px; padding: 40px 0 32px; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-hero .meta-line { gap: 12px; font-size: 0.85rem; flex-wrap: wrap; }
            .article-main { padding: 40px 0; }
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 1rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .sidebar-card .related-item img { width: 56px; height: 42px; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-body { padding: 20px 16px; }
            .article-body .content h2 { font-size: 1.3rem; }
            .article-body .content h3 { font-size: 1.1rem; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo .logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
            .article-hero .breadcrumb { font-size: 0.78rem; }
            .article-tags .tag { font-size: 0.75rem; padding: 3px 12px; }
            .sidebar-card { padding: 20px 16px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-body: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1d3557;
            --bg-soft: #edf2f4;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aa0;
            --text-white: #ffffff;
            --border-color: #e8e8ee;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --spacing-section: 80px;
            --spacing-block: 40px;
        }

        /* ===== 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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        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-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);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 Dock ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 24px;
            background: transparent;
            pointer-events: none;
        }
        .nav-dock {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-radius: 60px;
            padding: 10px 24px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.4);
            pointer-events: auto;
            transition: var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50%;
            font-size: 1.2rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            background: var(--bg-soft);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-soft);
            border-radius: 40px;
            padding: 6px 16px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.08);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 120px;
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-soft);
            color: var(--text-primary);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 999;
            backdrop-filter: blur(4px);
        }
        .mobile-menu-overlay.open {
            display: block;
        }
        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 300px;
            height: 100%;
            background: #fff;
            z-index: 1001;
            padding: 80px 32px 32px;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
            transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .mobile-menu-panel.open {
            right: 0;
        }
        .mobile-menu-panel .close-btn {
            position: absolute;
            top: 20px;
            right: 24px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text-primary);
        }
        .mobile-menu-panel .close-btn:hover {
            background: var(--primary);
            color: #fff;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 14px 0;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .mobile-menu-panel a:hover {
            color: var(--primary);
            padding-left: 8px;
        }
        .mobile-menu-panel a.active-mobile {
            color: var(--primary);
            font-weight: 700;
        }

        /* ===== Banner / Hero ===== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 60px 24px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #1d3557 100%);
            overflow: hidden;
        }
        .page-banner::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-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 57, 70, 0.15), transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(69, 123, 157, 0.15), transparent 60%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .banner-content h1 {
            color: #fff;
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .banner-content h1 span {
            color: var(--primary-light);
        }
        .banner-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .banner-tags .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .banner-tags .tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .banner-tags .tag i {
            margin-right: 6px;
            font-size: 0.75rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }
        .breadcrumb-wrap .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb-wrap a {
            color: var(--text-secondary);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap .sep {
            color: var(--border-color);
        }
        .breadcrumb-wrap .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto var(--spacing-block);
        }
        .section-header .subtitle {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
        }
        .section-bg-light {
            background: var(--bg-card);
        }
        .section-bg-soft {
            background: var(--bg-soft);
        }
        .section-bg-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-bg-dark .section-header h2 {
            color: #fff;
        }
        .section-bg-dark .section-header p {
            color: rgba(255, 255, 255, 0.8);
        }
        .section-bg-dark .section-header .subtitle {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            gap: 28px;
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px;
        }
        .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .card-body .card-meta i {
            margin-right: 4px;
        }
        .card-hover-link {
            cursor: pointer;
        }

        /* ===== 入口卡片（特色） ===== */
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .entry-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
        }
        .entry-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .entry-card .entry-status {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(46, 204, 113, 0.12);
            color: #2ecc71;
            margin-bottom: 12px;
        }
        .entry-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            flex: 1;
        }
        .entry-card .entry-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 18px;
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary);
            color: #fff;
            transition: var(--transition);
        }
        .entry-card .entry-link:hover {
            background: var(--primary-dark);
            transform: translateX(4px);
        }
        .entry-card .entry-link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .entry-card .entry-link:hover i {
            transform: translateX(4px);
        }
        .entry-card.featured {
            border-color: var(--primary-light);
            background: linear-gradient(135deg, #fff5f5, #fff);
        }
        .entry-card.featured .entry-icon {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 使用步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            text-align: center;
            padding: 28px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            background: var(--primary);
            color: #fff;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .step-item::after {
            content: "→";
            position: absolute;
            top: 50%;
            right: -18px;
            transform: translateY(-50%);
            font-size: 1.4rem;
            color: var(--text-light);
            font-weight: 300;
        }
        .step-item:last-child::after {
            display: none;
        }

        /* ===== 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-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .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: 1.05rem;
            cursor: pointer;
            color: var(--text-primary);
            transition: var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1b2d 100%);
            padding: 72px 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: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.45);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }
        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin: 0;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            :root {
                --spacing-section: 60px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-dock {
                padding: 8px 16px;
                border-radius: 40px;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .page-banner {
                min-height: 300px;
                padding: 40px 20px;
            }
            .banner-content h1 {
                font-size: clamp(1.6rem, 6vw, 2.2rem);
            }
            .banner-content p {
                font-size: 1rem;
            }
            .card-grid-3,
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            :root {
                --spacing-section: 48px;
                --spacing-block: 28px;
            }
            .entry-card {
                padding: 24px 20px;
            }
            .cta-section {
                padding: 48px 20px;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 240px;
                padding: 32px 16px;
            }
            .banner-tags .tag {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
            .section {
                padding: 40px 0;
            }
            .container {
                padding: 0 16px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

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

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .gap-sm {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }