/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0f1729;
            --color-primary-light: #1a2645;
            --color-accent: #d4a84b;
            --color-accent-light: #e8c06a;
            --color-accent-dark: #b88d30;
            --color-blue: #3b82f6;
            --color-blue-light: #60a5fa;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-bg-dark: #0b1120;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-lighter: #94a3b8;
            --color-text-on-dark: #f1f5f9;
            --color-border: #e2e8f0;
            --color-border-light: #f0f2f5;
            --color-white: #ffffff;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-error: #ef4444;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.18);
            --shadow-glow: 0 0 30px rgba(212, 168, 75, 0.25);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 76px;
            --tab-height: 64px;
        }

        /* ===== 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(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            padding-top: var(--header-height);
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 1024px) {
            body { padding-bottom: 0; }
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-blue); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--color-primary); }
        h1 { font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 800; letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.6rem, 4vw, 2.6rem); font-weight: 700; letter-spacing: -0.01em; }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 600; }
        h4 { font-size: 1.1rem; font-weight: 600; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
        }
        .section { padding: 80px 0; }
        @media (max-width: 768px) { .section { padding: 48px 0; } }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-sub { text-align: center; color: var(--color-text-light); max-width: 640px; margin: 0 auto 48px; font-size: 1.1rem; }
        @media (max-width: 768px) { .section-sub { margin-bottom: 32px; font-size: 1rem; } }
        .text-accent { color: var(--color-accent); }
        .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-width: 0; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: var(--radius-md);
            font-weight: 600; font-size: 1rem; line-height: 1.4;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-decoration: none;
        }
        .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn:active { transform: translateY(0); }
        .btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
        .btn-primary {
            background: var(--color-accent); color: var(--color-primary);
            border-color: var(--color-accent);
        }
        .btn-primary:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); color: var(--color-primary); }
        .btn-outline {
            background: transparent; color: var(--color-white);
            border-color: rgba(255,255,255,0.4);
        }
        .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--color-white); color: var(--color-white); }
        .btn-outline-dark {
            background: transparent; color: var(--color-primary);
            border-color: var(--color-border);
        }
        .btn-outline-dark:hover { border-color: var(--color-accent); color: var(--color-accent); }
        .btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 8px 18px; font-size: 0.875rem; border-radius: var(--radius-sm); }
        .btn-icon { width: 44px; height: 44px; padding: 0; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 23, 41, 0.92);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(15, 23, 41, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800; color: var(--color-white);
            text-decoration: none; letter-spacing: -0.01em;
        }
        .logo i { color: var(--color-accent); font-size: 1.5rem; }
        .logo:hover { color: var(--color-accent); }
        .logo span { background: linear-gradient(135deg, #fff 60%, var(--color-accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-desktop { display: flex; align-items: center; gap: 8px; }
        .nav-desktop a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: rgba(255,255,255,0.75);
            text-decoration: none; transition: all var(--transition);
            position: relative;
        }
        .nav-desktop a:hover { color: var(--color-white); background: rgba(255,255,255,0.08); }
        .nav-desktop a.active { color: var(--color-accent); background: rgba(212,168,75,0.12); }
        .nav-desktop a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 2px; border-radius: 2px; background: var(--color-accent);
        }
        .nav-desktop .nav-cta {
            background: var(--color-accent); color: var(--color-primary) !important;
            padding: 10px 24px; border-radius: var(--radius-md); font-weight: 600;
        }
        .nav-desktop .nav-cta:hover { background: var(--color-accent-light); transform: translateY(-1px); }
        .nav-desktop .nav-cta.active { background: var(--color-accent); color: var(--color-primary) !important; }
        .nav-desktop .nav-cta.active::after { display: none; }
        @media (max-width: 1023px) { .nav-desktop { display: none; } }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab {
            display: none;
            position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
            height: var(--tab-height);
            background: rgba(15, 23, 41, 0.96);
            backdrop-filter: blur(16px) saturate(1.2);
            -webkit-backdrop-filter: blur(16px) saturate(1.2);
            border-top: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 -4px 30px rgba(0,0,0,0.2);
        }
        @media (max-width: 1023px) { .mobile-tab { display: flex; } }
        .tab-inner {
            display: flex; align-items: center; justify-content: space-around;
            height: 100%; max-width: 600px; margin: 0 auto; padding: 0 8px;
        }
        .tab-item {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            padding: 6px 12px; border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.5); text-decoration: none;
            font-size: 0.7rem; font-weight: 500;
            transition: all var(--transition);
            min-width: 56px;
        }
        .tab-item i { font-size: 1.3rem; transition: transform var(--transition); }
        .tab-item:hover { color: rgba(255,255,255,0.8); }
        .tab-item:hover i { transform: translateY(-2px); }
        .tab-item.active { color: var(--color-accent); }
        .tab-item.active i { transform: translateY(-2px); }
        .tab-item .tab-label { font-size: 0.65rem; line-height: 1; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: min(90vh, 700px);
            display: flex; align-items: center;
            background: var(--color-bg-dark);
            overflow: hidden;
        }
        .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;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.08); }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(11,17,32,0.85) 0%, rgba(11,17,32,0.55) 50%, rgba(11,17,32,0.75) 100%);
        }
        .hero-overlay::after {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0;
            height: 200px; background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
        }
        .hero-content {
            position: relative; z-index: 2;
            max-width: 760px; padding: 40px 0 80px;
            color: var(--color-white);
        }
        .hero-content h1 {
            color: var(--color-white); margin-bottom: 20px;
            text-shadow: 0 4px 40px rgba(0,0,0,0.3);
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
        }
        .hero-content p {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: rgba(255,255,255,0.75);
            max-width: 580px; margin-bottom: 36px; line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
            padding: 8px 18px; border-radius: 50px;
            font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-bottom: 24px;
        }
        .hero-badge i { color: var(--color-accent); }

        /* ===== Stats Bar ===== */
        .stats-bar {
            background: var(--color-primary);
            border-top: 1px solid rgba(255,255,255,0.06);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .stats-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
            padding: 28px 0;
        }
        .stat-item { text-align: center; padding: 8px 16px; border-right: 1px solid rgba(255,255,255,0.06); }
        .stat-item:last-child { border-right: none; }
        .stat-number { font-size: 2rem; font-weight: 800; color: var(--color-accent); line-height: 1.2; }
        .stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.55); margin-top: 4px; }
        @media (max-width: 640px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px 0; }
            .stat-item:nth-child(2) { border-right: none; }
            .stat-number { font-size: 1.5rem; }
        }

        /* ===== Intro Section ===== */
        .intro-section {
            background: var(--color-white);
            position: relative;
        }
        .intro-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg); overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-image::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(to top, rgba(11,17,32,0.2), transparent);
        }
        .intro-text h2 { margin-bottom: 20px; }
        .intro-text p { color: var(--color-text-light); margin-bottom: 16px; font-size: 1.05rem; }
        .intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
        .intro-feature { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; color: var(--color-text); }
        .intro-feature i { color: var(--color-accent); font-size: 1rem; width: 20px; }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image img { height: 260px; }
            .intro-features { grid-template-columns: 1fr; }
        }

        /* ===== Category Cards ===== */
        .category-section {
            background: var(--color-bg-alt);
        }
        .category-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
            display: flex; flex-direction: column;
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
        .category-card-img {
            height: 200px; overflow: hidden; position: relative;
        }
        .category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .category-card:hover .category-card-img img { transform: scale(1.06); }
        .category-card-img .cat-tag {
            position: absolute; top: 16px; left: 16px;
            background: var(--color-accent); color: var(--color-primary);
            padding: 4px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 700;
        }
        .category-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .category-card-body h3 { margin-bottom: 8px; }
        .category-card-body h3 a { color: var(--color-primary); text-decoration: none; }
        .category-card-body h3 a:hover { color: var(--color-accent); }
        .category-card-body p { color: var(--color-text-light); font-size: 0.95rem; margin-bottom: 16px; flex: 1; }
        .category-card-body .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--color-text-lighter); }
        .category-card-body .card-meta i { margin-right: 4px; }
        @media (max-width: 1023px) { .category-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .category-grid { grid-template-columns: 1fr; gap: 20px; } }

        /* ===== Latest Posts (CMS) ===== */
        .posts-section { background: var(--color-white); }
        .posts-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
        }
        .post-card {
            display: flex; gap: 20px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .post-card:hover { border-color: var(--color-border); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
        .post-card-thumb {
            width: 120px; min-height: 100px; border-radius: var(--radius-sm);
            overflow: hidden; flex-shrink: 0;
            background: var(--color-border);
        }
        .post-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .post-card-body { flex: 1; display: flex; flex-direction: column; gap: 6px; }
        .post-card-body .post-cat {
            font-size: 0.7rem; font-weight: 600; color: var(--color-accent);
            text-transform: uppercase; letter-spacing: 0.5px;
        }
        .post-card-body h4 { font-size: 1rem; line-height: 1.4; }
        .post-card-body h4 a { color: var(--color-primary); text-decoration: none; }
        .post-card-body h4 a:hover { color: var(--color-accent); }
        .post-card-body p { font-size: 0.85rem; color: var(--color-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card-body .post-time { font-size: 0.75rem; color: var(--color-text-lighter); display: flex; align-items: center; gap: 6px; }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center; padding: 48px 20px;
            color: var(--color-text-light); background: var(--color-bg-alt);
            border-radius: var(--radius-md);
        }
        .post-empty i { font-size: 2.5rem; color: var(--color-text-lighter); margin-bottom: 12px; display: block; }
        @media (max-width: 768px) {
            .posts-grid { grid-template-columns: 1fr; }
            .post-card { flex-direction: column; }
            .post-card-thumb { width: 100%; height: 180px; }
        }

        /* ===== Features / Process ===== */
        .features-section {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .features-section .section-title { color: var(--color-white); }
        .features-section .section-sub { color: rgba(255,255,255,0.6); }
        .features-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .feature-card {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition);
        }
        .feature-card:hover { background: rgba(255,255,255,0.07); border-color: rgba(212,168,75,0.25); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .feature-icon {
            width: 64px; height: 64px; margin: 0 auto 20px;
            display: flex; align-items: center; justify-content: center;
            border-radius: 50%;
            background: rgba(212,168,75,0.12);
            color: var(--color-accent);
            font-size: 1.6rem;
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon { background: rgba(212,168,75,0.2); transform: scale(1.05); }
        .feature-card h3 { color: var(--color-white); margin-bottom: 12px; font-size: 1.2rem; }
        .feature-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.7; }
        @media (max-width: 1023px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-section { background: var(--color-bg-alt); }
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px; cursor: pointer;
            font-weight: 600; font-size: 1rem; color: var(--color-primary);
            background: none; border: none; width: 100%; text-align: left;
            transition: color var(--transition);
        }
        .faq-question i { color: var(--color-accent); transition: transform var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary);
            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: 0.08;
        }
        .cta-content {
            position: relative; z-index: 1;
            text-align: center; padding: 60px 0;
        }
        .cta-content h2 { color: var(--color-white); margin-bottom: 16px; }
        .cta-content p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 48px 0 24px;
            color: rgba(255,255,255,0.6);
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.06);
            margin-bottom: 24px;
        }
        .footer-brand .logo { margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; max-width: 320px; line-height: 1.7; }
        .footer-col h4 { color: var(--color-white); font-size: 0.95rem; margin-bottom: 16px; }
        .footer-col a {
            display: block; padding: 4px 0;
            font-size: 0.88rem; color: rgba(255,255,255,0.55);
            text-decoration: none; transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--color-accent); }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            font-size: 0.82rem; color: rgba(255,255,255,0.4);
            flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; }
        .footer-bottom a:hover { color: var(--color-accent); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
            border-radius: 50%; background: rgba(255,255,255,0.05);
            color: rgba(255,255,255,0.5); font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--color-accent); color: var(--color-primary); transform: translateY(-2px); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Scroll To Top ===== */
        .scroll-top {
            position: fixed; bottom: 80px; right: 24px; z-index: 900;
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--color-accent); color: var(--color-primary);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem; box-shadow: var(--shadow-md);
            opacity: 0; visibility: hidden; transform: translateY(20px);
            transition: all var(--transition);
            border: none; cursor: pointer;
        }
        .scroll-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .scroll-top:hover { background: var(--color-accent-light); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
        @media (min-width: 1024px) { .scroll-top { bottom: 40px; } }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in { animation: fadeInUp 0.7s ease forwards; }
        .animate-in-delay-1 { animation-delay: 0.1s; }
        .animate-in-delay-2 { animation-delay: 0.2s; }
        .animate-in-delay-3 { animation-delay: 0.3s; }

        /* ===== Misc ===== */
        .divider { height: 1px; background: var(--color-border); margin: 0; }
        .tag {
            display: inline-block; padding: 2px 12px; border-radius: 50px;
            font-size: 0.75rem; font-weight: 600;
            background: var(--color-bg-alt); color: var(--color-text-light);
        }
        .tag-accent { background: rgba(212,168,75,0.12); color: var(--color-accent); }
        .gap-8 { gap: 8px; }
        .gap-16 { gap: 16px; }

        /* ===== Responsive Typography ===== */
        @media (max-width: 480px) {
            .hero-content h1 { font-size: 1.8rem; }
            .hero-content p { font-size: 0.95rem; }
            .btn-lg { padding: 14px 28px; font-size: 1rem; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f0e1a;
            --primary-light: #1a1a3e;
            --secondary: #e94560;
            --accent: #f0c040;
            --accent-dim: #c9a030;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0a0a1a;
            --bg-section: #f0f2f6;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #f0f0f0;
            --text-muted: #9ca3af;
            --border: #e8ecf1;
            --border-light: #f0f2f6;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 30px rgba(240, 192, 64, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

        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: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

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

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(15, 14, 26, 0.92);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        .logo i {
            color: var(--accent);
            font-size: 24px;
            transition: var(--transition);
        }

        .logo:hover i {
            transform: rotate(30deg) scale(1.1);
        }

        .logo span {
            background: linear-gradient(135deg, #f0c040, #e94560);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-desktop a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
        }

        .nav-desktop a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-desktop a.active {
            color: var(--accent);
            background: rgba(240, 192, 64, 0.12);
        }

        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .nav-desktop a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 50px;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.25);
        }

        .nav-desktop a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(233, 69, 96, 0.35);
            background: linear-gradient(135deg, #f5c840, #e94560);
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: transparent;
            border: none;
        }

        .nav-mobile-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-mobile-overlay {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            width: 100%;
            height: 0;
            background: rgba(15, 14, 26, 0.98);
            backdrop-filter: blur(24px);
            overflow: hidden;
            transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 999;
        }

        .nav-mobile-overlay.open {
            height: auto;
            min-height: 280px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-mobile-overlay .nav-mobile-inner {
            display: flex;
            flex-direction: column;
            padding: 32px 24px 40px;
            gap: 12px;
        }

        .nav-mobile-overlay a {
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }

        .nav-mobile-overlay a:hover,
        .nav-mobile-overlay a.active {
            background: rgba(240, 192, 64, 0.1);
            color: var(--accent);
        }

        .nav-mobile-overlay a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            text-align: center;
            border-radius: 50px;
            margin-top: 8px;
        }

        /* 移动端底部 Tab (仅在移动显示) */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 64px;
            background: rgba(15, 14, 26, 0.96);
            backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 998;
            padding: 0 12px;
            align-items: center;
            justify-content: space-around;
        }

        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.5);
            font-size: 11px;
            font-weight: 500;
            transition: var(--transition);
        }

        .mobile-tab-bar a i {
            font-size: 20px;
        }

        .mobile-tab-bar a:hover,
        .mobile-tab-bar a.active {
            color: var(--accent);
        }

        .mobile-tab-bar a.active {
            background: rgba(240, 192, 64, 0.08);
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .mobile-tab-bar {
                display: flex;
            }
            body {
                padding-bottom: 64px;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile-overlay {
                display: none !important;
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 80px;
            margin-top: var(--header-h);
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 14, 26, 0.7) 0%, rgba(15, 14, 26, 0.2) 60%, rgba(15, 14, 26, 0.85) 100%);
            z-index: 1;
        }

        .article-hero .container-narrow {
            position: relative;
            z-index: 2;
            width: 100%;
        }

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

        .article-hero .hero-meta .category-badge {
            display: inline-block;
            padding: 5px 16px;
            background: rgba(240, 192, 64, 0.18);
            color: var(--accent);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid rgba(240, 192, 64, 0.2);
        }

        .article-hero .hero-meta .date {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            font-weight: 400;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-hero .hero-meta .date i {
            font-size: 14px;
        }

        .article-hero h1 {
            font-size: clamp(28px, 4.2vw, 52px);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .article-hero .hero-excerpt {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 16px;
            max-width: 700px;
            line-height: 1.6;
        }

        .article-hero .hero-bottom {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .article-hero .author-info {
            display: flex;
            align-items: center;
            gap: 12px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .article-hero .author-info .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 110px 0 50px;
                min-height: 280px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-hero .hero-excerpt {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .article-hero {
                padding: 100px 0 40px;
                min-height: 220px;
            }
            .article-hero h1 {
                font-size: 22px;
            }
            .article-hero .hero-meta {
                gap: 10px;
            }
        }

        /* ===== 文章正文区域 ===== */
        .article-main {
            padding: 56px 0 64px;
            background: var(--bg);
        }

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 48px 56px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .article-content .content-body {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text);
        }

        .article-content .content-body p {
            margin-bottom: 1.4em;
        }

        .article-content .content-body h2,
        .article-content .content-body h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--primary);
        }

        .article-content .content-body h2 {
            font-size: 26px;
        }

        .article-content .content-body h3 {
            font-size: 21px;
        }

        .article-content .content-body img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow);
        }

        .article-content .content-body ul,
        .article-content .content-body ol {
            margin: 1em 0;
            padding-left: 24px;
            list-style: disc;
        }

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

        .article-content .content-body li {
            margin-bottom: 0.5em;
        }

        .article-content .content-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.6em 0;
            background: rgba(240, 192, 64, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }

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

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

        /* 文章信息栏 */
        .article-info-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 16px;
            margin-top: 32px;
            border-top: 1px solid var(--border);
        }

        .article-info-bar .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-info-bar .tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-section);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .article-info-bar .tags .tag:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .article-info-bar .share {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-light);
            font-size: 14px;
        }

        .article-info-bar .share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-section);
            border: 1px solid var(--border);
            color: var(--text-light);
            transition: var(--transition);
        }

        .article-info-bar .share a:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .article-content {
                padding: 28px 20px;
            }
            .article-content .content-body {
                font-size: 16px;
            }
            .article-info-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-content {
                padding: 20px 14px;
            }
            .article-content .content-body {
                font-size: 15px;
            }
        }

        /* ===== 上下篇导航 ===== */
        .article-nav {
            padding: 40px 0 16px;
        }

        .article-nav .nav-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .article-nav .nav-links a {
            display: flex;
            flex-direction: column;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .article-nav .nav-links a:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--accent);
        }

        .article-nav .nav-links .nav-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .article-nav .nav-links .nav-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }

        .article-nav .nav-links a:hover .nav-title {
            color: var(--secondary);
        }

        .article-nav .nav-links .nav-prev .nav-label i {
            margin-right: 6px;
        }

        .article-nav .nav-links .nav-next .nav-label i {
            margin-left: 6px;
        }

        .article-nav .nav-links .nav-next {
            text-align: right;
        }

        .article-nav .nav-links .nav-empty {
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        @media (max-width: 640px) {
            .article-nav .nav-links {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 48px 0 56px;
            background: var(--bg-section);
        }

        .related-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .related-section .section-header h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
        }

        .related-section .section-header a {
            font-size: 15px;
            font-weight: 500;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .related-section .section-header a:hover {
            color: var(--accent-dim);
        }

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

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
            border-color: rgba(240, 192, 64, 0.2);
        }

        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }

        .related-card .card-body {
            padding: 18px 20px 20px;
        }

        .related-card .card-body .card-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }

        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-date {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .related-card:hover .card-body h3 {
            color: var(--secondary);
        }

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

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .related-section .section-header h2 {
                font-size: 22px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0 72px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 14, 26, 0.85), rgba(26, 26, 62, 0.7));
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3.6vw, 42px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 28px;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            border-radius: 50px;
            box-shadow: 0 8px 32px rgba(233, 69, 96, 0.3);
            transition: var(--transition);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(233, 69, 96, 0.4);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0 56px;
            }
            .cta-section p {
                font-size: 16px;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-wrap {
            padding: 80px 0;
            text-align: center;
        }

        .not-found-wrap .nf-icon {
            font-size: 72px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-wrap h2 {
            font-size: 28px;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found-wrap p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .not-found-wrap .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 600;
        }

        .not-found-wrap .back-btn:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .site-footer .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .site-footer .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);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }

        .site-footer .footer-social 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: 18px;
            transition: var(--transition);
        }

        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            padding: 5px 0;
            transition: var(--transition);
        }

        .site-footer .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .mt-24 {
            margin-top: 24px;
        }

        .mb-16 {
            margin-bottom: 16px;
        }

        .mb-24 {
            margin-bottom: 24px;
        }

        /* ===== 响应式调整 ===== */
        @media (max-width: 768px) {
            .article-main {
                padding: 32px 0 40px;
            }
            .related-section {
                padding: 32px 0 40px;
            }
        }

        @media (max-width: 520px) {
            .article-main {
                padding: 24px 0 32px;
            }
            .related-section {
                padding: 24px 0 32px;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --primary-dark: #0f0e17;
            --secondary: #e94560;
            --secondary-light: #ff6b81;
            --accent: #f5c518;
            --accent-light: #ffd93d;
            --bg: #f0f2f5;
            --bg-alt: #ffffff;
            --card-bg: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f3f4f6;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 769px) {
            body {
                padding-bottom: 0;
            }
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .section {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        @media (max-width: 768px) {
            .section-header {
                margin-bottom: 32px;
            }
            .section-header p {
                font-size: 1rem;
            }
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--accent);
            color: var(--primary);
            margin-bottom: 12px;
        }
        .badge-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--secondary);
            color: var(--secondary);
        }

        /* ===== Header / Nav Desktop ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary) 40%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-desktop a {
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--primary);
            background: var(--border-light);
        }
        .nav-desktop a.active {
            color: var(--secondary);
            background: rgba(233, 69, 96, 0.08);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--secondary);
        }
        .nav-desktop a.nav-cta {
            background: var(--secondary);
            color: #fff;
            padding: 10px 24px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.3);
        }
        .nav-desktop a.nav-cta:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 69, 96, 0.35);
            color: #fff;
        }
        .nav-desktop a.nav-cta:active {
            transform: translateY(0);
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: var(--tab-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            display: none;
            align-items: center;
            justify-content: space-around;
            z-index: 1100;
            padding: 0 8px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-lighter);
            transition: var(--transition);
            min-width: 60px;
        }
        .mobile-tab-bar a i {
            font-size: 1.25rem;
            transition: var(--transition);
        }
        .mobile-tab-bar a:hover {
            color: var(--primary);
            background: var(--border-light);
        }
        .mobile-tab-bar a.active {
            color: var(--secondary);
        }
        .mobile-tab-bar a.active i {
            transform: scale(1.1);
        }
        .mobile-tab-bar a.tab-cta {
            background: var(--secondary);
            color: #fff;
            border-radius: 50px;
            padding: 8px 20px;
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.3);
        }
        .mobile-tab-bar a.tab-cta i {
            font-size: 1.1rem;
        }
        .mobile-tab-bar a.tab-cta:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            color: #fff;
        }
        @media (max-width: 768px) {
            .mobile-tab-bar {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(15, 14, 23, 0.88) 0%,
                    rgba(26, 26, 46, 0.72) 40%,
                    rgba(233, 69, 96, 0.25) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 180px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 2;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero-content .badge {
            background: rgba(245, 197, 24, 0.2);
            color: var(--accent);
            border: 1px solid rgba(245, 197, 24, 0.3);
            backdrop-filter: blur(4px);
            font-size: 0.85rem;
            padding: 6px 20px;
        }
        .hero-content h1 {
            color: #fff;
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--accent) 20%, var(--secondary) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 30px rgba(233, 69, 96, 0.35);
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(233, 69, 96, 0.45);
        }
        .hero-actions .btn-primary:active {
            transform: translateY(0);
        }
        .hero-actions .btn-outline {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 1.05rem;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .hero-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 60vh;
            }
            .hero-content p {
                font-size: 1rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .hero {
                min-height: 55vh;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Features Section ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(233, 69, 96, 0.1), rgba(245, 197, 24, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .feature-card h3 {
            margin-bottom: 12px;
            font-size: 1.2rem;
        }
        .feature-card p {
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }
        .category-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .category-card .card-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
        }
        .category-card .card-body {
            padding: 20px 22px 24px;
        }
        .category-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            font-size: 0.9rem;
            margin-bottom: 16px;
            color: var(--text-lighter);
        }
        .category-card .card-body .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--border-light);
            color: var(--text-light);
            margin-right: 6px;
            transition: var(--transition);
        }
        .category-card .card-body .tag:hover {
            background: var(--secondary);
            color: #fff;
        }
        .category-card .card-link {
            position: absolute;
            inset: 0;
            z-index: 2;
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .category-card .card-img {
                height: 140px;
            }
            .category-card .card-body {
                padding: 16px 16px 20px;
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Featured Content ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }
        .content-card .content-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .content-card .content-img .content-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(233, 69, 96, 0.9);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .content-card .content-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .content-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .content-card .content-body p {
            font-size: 0.9rem;
            color: var(--text-lighter);
            margin-bottom: 16px;
            flex: 1;
        }
        .content-card .content-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-lighter);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .content-card .content-meta i {
            margin-right: 4px;
        }
        @media (max-width: 768px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .content-card .content-img {
                height: 180px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== Stats / Data ===== */
        .stats-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 46, 0.88);
            z-index: 1;
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 16px;
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question i {
            color: var(--text-lighter);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            color: var(--secondary);
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 46, 0.85);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--accent);
            color: var(--primary);
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 30px rgba(245, 197, 24, 0.35);
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-4px);
            box-shadow: 0 14px 44px rgba(245, 197, 24, 0.45);
        }
        .cta-section .btn-cta:active {
            transform: translateY(0);
        }
        @media (max-width: 768px) {
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }
        .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 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 300px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.15rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 80px;
            }
            .site-footer .container {
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 32px;
            }
            .footer-grid .footer-col:last-child {
                grid-column: span 3;
            }
        }

        /* ===== Scroll to top ===== */
        .scroll-top {
            position: fixed;
            bottom: calc(var(--tab-height) + 20px);
            right: 24px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .scroll-top:hover {
            background: var(--secondary-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(233, 69, 96, 0.4);
        }
        @media (min-width: 769px) {
            .scroll-top {
                bottom: 40px;
            }
        }
        @media (max-width: 520px) {
            .scroll-top {
                right: 16px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 360px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 0.9rem;
            }
            .category-card .card-body h3 {
                font-size: 1rem;
            }
            .content-card .content-body h3 {
                font-size: 1rem;
            }
        }
        @media (min-width: 1600px) {
            .container {
                max-width: 1320px;
            }
        }