/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-light: #6366F1;
            --primary-dark: #4338CA;
            --secondary: #7C3AED;
            --accent: #F59E0B;
            --bg: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-alt: #F1F5F9;
            --text: #1E293B;
            --text-light: #64748B;
            --text-white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 1px 3px 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: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; transition: var(--transition); }
        input:focus, textarea:focus { box-shadow: 0 0 0 3px rgba(79,70,229,0.15); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* Header & Nav */
        .header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); height: var(--header-h); transition: var(--transition); }
        .header.scrolled { box-shadow: var(--shadow); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; letter-spacing: -0.5px; }
        .logo i { font-size: 1.6rem; color: var(--secondary); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a { padding: 8px 18px; border-radius: var(--radius-sm); font-weight: 500; color: var(--text-light); font-size: 0.95rem; position: relative; }
        .nav a:hover { color: var(--primary); background: rgba(79,70,229,0.06); }
        .nav a.active { color: var(--primary); background: rgba(79,70,229,0.1); font-weight: 600; }
        .nav a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; border-radius: 2px; background: var(--primary); }
        .nav-cta { background: var(--primary) !important; color: #fff !important; padding: 10px 24px !important; border-radius: var(--radius-sm) !important; font-weight: 600 !important; }
        .nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(79,70,229,0.3); }
        .menu-toggle { display: none; background: none; font-size: 1.5rem; color: var(--text); cursor: pointer; padding: 8px; border-radius: var(--radius-sm); }
        .menu-toggle:hover { background: var(--bg-alt); }
        @media (max-width: 768px) {
            .menu-toggle { display: flex; align-items: center; justify-content: center; }
            .nav { position: fixed; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid var(--border); transform: translateY(-120%); opacity: 0; transition: var(--transition); box-shadow: var(--shadow-lg); }
            .nav.open { transform: translateY(0); opacity: 1; }
            .nav a { width: 100%; padding: 12px 16px; }
            .nav-cta { text-align: center; }
        }

        /* Hero */
        .hero { margin-top: var(--header-h); min-height: 85vh; display: flex; align-items: center; position: relative; overflow: hidden; background: linear-gradient(135deg, #1E1B4B 0%, #312E81 40%, #4F46E5 100%); }
        .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.25; mix-blend-mode: overlay; }
        .hero-overlay { position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(79,70,229,0.3) 0%, transparent 70%); }
        .hero-content { position: relative; z-index: 2; max-width: 720px; padding: 80px 0; }
        .hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; color: rgba(255,255,255,0.9); margin-bottom: 24px; border: 1px solid rgba(255,255,255,0.08); }
        .hero-tag i { color: var(--accent); }
        .hero h1 { font-size: 3.8rem; font-weight: 800; color: #fff; line-height: 1.15; letter-spacing: -1px; margin-bottom: 20px; }
        .hero h1 span { background: linear-gradient(135deg, #FDE68A, #F59E0B); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.7); line-height: 1.7; margin-bottom: 36px; max-width: 580px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
        .hero-actions .btn-primary { background: #fff; color: var(--primary); padding: 14px 36px; border-radius: var(--radius-sm); font-weight: 700; font-size: 1.05rem; display: inline-flex; align-items: center; gap: 10px; }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.25); }
        .hero-actions .btn-outline { background: transparent; color: #fff; padding: 14px 36px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1.05rem; border: 2px solid rgba(255,255,255,0.3); display: inline-flex; align-items: center; gap: 10px; }
        .hero-actions .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.06); transform: translateY(-3px); }
        .hero-stats { display: flex; gap: 48px; margin-top: 56px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); }
        .hero-stat h3 { font-size: 2.2rem; font-weight: 800; color: #fff; }
        .hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-bottom: 0; }
        @media (max-width: 768px) {
            .hero { min-height: auto; padding: 40px 0; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat h3 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn-primary, .hero-actions .btn-outline { justify-content: center; }
        }

        /* Section base */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-dark { background: linear-gradient(135deg, #1E1B4B, #312E81); color: #fff; }
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header h2 { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
        .section-header p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto; }
        .section-dark .section-header h2 { color: #fff; }
        .section-dark .section-header p { color: rgba(255,255,255,0.65); }
        .section-header .tag { display: inline-block; background: rgba(79,70,229,0.1); color: var(--primary); padding: 4px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header h2 { font-size: 1.8rem; }
            .section-header p { font-size: 1rem; }
        }

        /* Features */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .feature-card { background: var(--bg-card); border-radius: var(--radius); padding: 40px 32px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); text-align: center; }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary-light); }
        .feature-icon { width: 72px; height: 72px; border-radius: 50%; background: linear-gradient(135deg, rgba(79,70,229,0.1), rgba(124,58,237,0.1)); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 2rem; color: var(--primary); transition: var(--transition); }
        .feature-card:hover .feature-icon { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; }
        .feature-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; }
        @media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; gap: 20px; } }
        @media (min-width: 769px) and (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2,1fr); } }

        /* Category Grid */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .category-card { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3; cursor: pointer; group: true; }
        .category-card img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover img { transform: scale(1.08); }
        .category-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%); display: flex; flex-direction: column; justify-content: flex-end; padding: 24px; }
        .category-overlay h3 { color: #fff; font-size: 1.25rem; font-weight: 700; }
        .category-overlay p { color: rgba(255,255,255,0.75); font-size: 0.9rem; margin-top: 4px; }
        .category-badge { position: absolute; top: 16px; left: 16px; background: rgba(255,255,255,0.15); backdrop-filter: blur(8px); padding: 4px 14px; border-radius: 50px; color: #fff; font-size: 0.8rem; font-weight: 600; border: 1px solid rgba(255,255,255,0.1); }
        @media (max-width: 768px) { .category-grid { grid-template-columns: 1fr; gap: 16px; } }
        @media (min-width: 769px) and (max-width: 1024px) { .category-grid { grid-template-columns: repeat(2,1fr); } }

        /* CMS List */
        .cms-list { display: grid; grid-template-columns: 1fr; gap: 16px; }
        .cms-item { display: flex; align-items: flex-start; gap: 20px; background: var(--bg-card); padding: 20px 24px; border-radius: var(--radius-sm); border: 1px solid var(--border); transition: var(--transition); }
        .cms-item:hover { box-shadow: var(--shadow); transform: translateX(4px); border-color: var(--primary-light); }
        .cms-item .num { font-size: 1.6rem; font-weight: 800; color: var(--primary); min-width: 44px; opacity: 0.4; font-feature-settings: "tnum"; }
        .cms-item .info { flex: 1; }
        .cms-item .info h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
        .cms-item .info h3 a { color: var(--text); }
        .cms-item .info h3 a:hover { color: var(--primary); }
        .cms-item .info p { font-size: 0.9rem; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
        .cms-item .meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-light); margin-top: 6px; }
        .cms-item .meta span { display: inline-flex; align-items: center; gap: 4px; }
        .cms-item .meta .tag { background: rgba(79,70,229,0.08); color: var(--primary); padding: 2px 12px; border-radius: 50px; font-weight: 500; }
        .cms-empty { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 1rem; background: var(--bg-card); border-radius: var(--radius-sm); border: 1px dashed var(--border); }
        @media (max-width: 520px) { .cms-item { flex-direction: column; gap: 8px; padding: 16px; } .cms-item .num { display: none; } }

        /* Guide cards */
        .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .guide-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); }
        .guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
        .guide-card .thumb { height: 180px; overflow: hidden; }
        .guide-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .guide-card:hover .thumb img { transform: scale(1.06); }
        .guide-card .body { padding: 20px 24px 24px; }
        .guide-card .body .tag { display: inline-block; background: rgba(79,70,229,0.08); color: var(--primary); padding: 2px 12px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; margin-bottom: 10px; }
        .guide-card .body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .guide-card .body p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .guide-card .body .btn-text { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; font-size: 0.9rem; margin-top: 12px; }
        .guide-card .body .btn-text:hover { gap: 10px; }
        @media (max-width: 768px) { .guide-grid { grid-template-columns: 1fr; } }
        @media (min-width: 769px) and (max-width: 1024px) { .guide-grid { grid-template-columns: repeat(2,1fr); } }

        /* Stats */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
        .stat-item h3 { font-size: 2.8rem; font-weight: 800; background: linear-gradient(135deg, #FDE68A, #F59E0B); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .stat-item p { color: rgba(255,255,255,0.65); font-size: 1rem; margin-top: 4px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2,1fr); gap: 24px; } .stat-item h3 { font-size: 2rem; } }

        /* 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); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question { padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1.05rem; user-select: none; }
        .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { padding: 0 24px; max-height: 0; overflow: hidden; transition: var(--transition); color: var(--text-light); line-height: 1.7; }
        .faq-item.active .faq-answer { padding: 0 24px 20px; max-height: 300px; }
        @media (max-width: 520px) { .faq-question { padding: 16px; font-size: 0.95rem; } .faq-answer { padding: 0 16px; } .faq-item.active .faq-answer { padding: 0 16px 16px; } }

        /* CTA */
        .cta-section { padding: 80px 0; text-align: center; background: linear-gradient(135deg, var(--primary), var(--secondary)); position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.1; mix-blend-mode: overlay; }
        .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-content h2 { font-size: 2.4rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.1rem; color: rgba(255,255,255,0.75); margin-bottom: 32px; }
        .cta-content .btn-cta { display: inline-flex; align-items: center; gap: 10px; background: #fff; color: var(--primary); padding: 16px 44px; border-radius: var(--radius-sm); font-weight: 700; font-size: 1.1rem; }
        .cta-content .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,0.2); }
        @media (max-width: 768px) { .cta-section { padding: 56px 0; } .cta-content h2 { font-size: 1.8rem; } }

        /* Footer */
        .footer { background: #0F172A; color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand .logo span { background: linear-gradient(135deg, #FDE68A, #F59E0B); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer h4 { color: #fff; font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.55); }
        .footer ul li a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } .footer-brand { grid-column: 1 / -1; } .footer-bottom { flex-direction: column; text-align: center; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

        /* Buttons */
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 1rem; cursor: pointer; transition: var(--transition); border: none; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.3); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn-white { background: #fff; color: var(--primary); }
        .btn-white:hover { background: var(--bg-alt); transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 0.9rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; }

        /* Misc */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mt-40 { margin-top: 40px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex { display: flex; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-center { justify-content: center; }
        .tag-label { display: inline-block; background: rgba(79,70,229,0.08); color: var(--primary); padding: 2px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }
        .divider { width: 60px; height: 4px; border-radius: 2px; background: linear-gradient(135deg, var(--primary), var(--secondary)); margin: 0 auto 16px; }
        .section-dark .divider { background: linear-gradient(135deg, #FDE68A, #F59E0B); }
        .back-to-top { position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; box-shadow: var(--shadow); z-index: 999; opacity: 0; transform: translateY(20px); pointer-events: none; transition: var(--transition); }
        .back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .back-to-top:hover { background: var(--primary-dark); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        @media (max-width: 520px) { .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 1rem; } }

        /* Page inner banner */
        .page-banner { margin-top: var(--header-h); padding: 60px 0; background: linear-gradient(135deg, #1E1B4B, #312E81); position: relative; overflow: hidden; }
        .page-banner::after { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.12; mix-blend-mode: overlay; }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 { color: #fff; font-size: 2.2rem; font-weight: 800; }
        .page-banner p { color: rgba(255,255,255,0.65); font-size: 1.05rem; margin-top: 8px; max-width: 560px; }
        .page-banner .breadcrumb { display: flex; gap: 8px; font-size: 0.9rem; color: rgba(255,255,255,0.5); margin-bottom: 12px; }
        .page-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .page-banner .breadcrumb a:hover { color: #fff; }
        .page-banner .breadcrumb span { color: rgba(255,255,255,0.4); }
        @media (max-width: 768px) { .page-banner { padding: 40px 0; } .page-banner h1 { font-size: 1.7rem; } }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e74c3c;
            --primary-light: #f1948a;
            --primary-dark: #c0392b;
            --secondary: #2d3436;
            --accent: #fdcb6e;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #2d3436;
            --text-secondary: #636e72;
            --text-light: #b2bec3;
            --border-color: #e9ecef;
            --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 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 40px rgba(231,76,60,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --container: 1200px;
            --nav-height: 72px;
            --header-bg: rgba(255,255,255,0.97);
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-primary); font-weight: 700; }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--header-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .header.scrolled { box-shadow: var(--shadow-sm); }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i { font-size: 28px; color: var(--primary); }
        .logo span { color: var(--text-primary); }
        .logo:hover span { color: var(--primary); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover { color: var(--primary); background: rgba(231,76,60,0.06); }
        .nav a.active {
            color: var(--primary);
            background: rgba(231,76,60,0.1);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(231,76,60,0.3);
        }
        .nav .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(231,76,60,0.35);
        }
        .nav .nav-cta i { font-size: 16px; }
        .menu-toggle { display: none; background: none; border: none; font-size: 28px; color: var(--text-primary); cursor: pointer; padding: 4px; }

        /* ===== 文章 Banner ===== */
        .article-banner {
            margin-top: var(--nav-height);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #2d3436 0%, #1a1a2e 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-banner .container { position: relative; z-index: 2; width: 100%; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-banner .breadcrumb a:hover { color: #fff; }
        .article-banner .breadcrumb i { font-size: 12px; color: rgba(255,255,255,0.4); }
        .article-banner h1 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            max-width: 800px;
            line-height: 1.3;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-banner .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: rgba(255,255,255,0.7);
            font-size: 14px;
        }
        .article-banner .meta span { display: flex; align-items: center; gap: 6px; }
        .article-banner .meta i { font-size: 14px; }
        .article-banner .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .article-content .post-body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-content .post-body p { margin-bottom: 1.6em; }
        .article-content .post-body h2 { font-size: 24px; margin: 40px 0 16px; color: var(--text-primary); }
        .article-content .post-body h3 { font-size: 20px; margin: 32px 0 12px; }
        .article-content .post-body ul, .article-content .post-body ol { margin-bottom: 1.6em; padding-left: 24px; }
        .article-content .post-body li { margin-bottom: 8px; list-style: disc; }
        .article-content .post-body ol li { list-style: decimal; }
        .article-content .post-body img { margin: 24px 0; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .article-content .post-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(231,76,60,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content .post-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li { margin-bottom: 4px; }
        .sidebar-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            transition: var(--transition);
            gap: 12px;
        }
        .sidebar-list a:hover {
            background: rgba(231,76,60,0.06);
            color: var(--primary);
            transform: translateX(4px);
        }
        .sidebar-list a .badge {
            background: var(--bg-light);
            color: var(--text-light);
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .sidebar-list a:hover .badge { background: rgba(231,76,60,0.1); color: var(--primary); }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-md);
            padding: 32px 28px;
            text-align: center;
        }
        .sidebar-cta h4 { color: #fff; font-size: 20px; margin-bottom: 8px; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 14px; margin-bottom: 20px; }
        .sidebar-cta .btn-white {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .sidebar-cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

        /* ===== 文章页脚导航 ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            color: var(--text-secondary);
            font-size: 15px;
            transition: var(--transition);
            max-width: 48%;
        }
        .article-nav a:hover { background: rgba(231,76,60,0.08); color: var(--primary); }
        .article-nav .next { text-align: right; flex-direction: row-reverse; }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-light);
        }
        .related-section h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 32px;
            text-align: center;
        }
        .related-section h2 span { color: var(--primary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-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);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 20px 24px 24px; }
        .related-card .card-body h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 14px; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 13px; color: var(--text-light); }

        /* ===== 页脚 ===== */
        .footer {
            background: #1a1a2e;
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer .logo span { color: #fff; }
        .footer .logo i { color: var(--primary); }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; color: rgba(255,255,255,0.6); }
        .footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
        .footer ul li a:hover { color: var(--primary); transform: translateX(4px); }
        .footer ul li i { width: 18px; color: var(--primary-light); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i { font-size: 64px; color: var(--text-light); margin-bottom: 24px; }
        .not-found-box h2 { font-size: 28px; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--header-bg); backdrop-filter: blur(20px); flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-md); }
            .nav.open { display: flex; }
            .nav a { width: 100%; padding: 12px 16px; }
            .nav a.active::after { display: none; }
            .nav .nav-cta { justify-content: center; }
            .menu-toggle { display: block; }
            .article-banner { padding: 60px 0 40px; min-height: 240px; }
            .article-banner h1 { font-size: 26px; }
            .article-content { padding: 24px 20px; }
            .article-content .post-body { font-size: 16px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .logo { font-size: 20px; }
            .logo i { font-size: 22px; }
            .article-banner h1 { font-size: 22px; }
            .article-content { padding: 20px 16px; }
            .article-content .post-body { font-size: 15px; }
            .sidebar-card { padding: 20px; }
            .related-card img { height: 160px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #5B6ABF;
            --primary-light: #7B89D9;
            --primary-dark: #3D4A9A;
            --secondary: #FF6B6B;
            --secondary-light: #FF8E8E;
            --accent: #FFD93D;
            --accent-soft: #FFF3CD;
            --success: #00B894;
            --bg: #F5F6FA;
            --bg-card: #FFFFFF;
            --bg-dark: #2D3436;
            --bg-footer: #1E272E;
            --text: #2D3436;
            --text-medium: #636E72;
            --text-light: #B2BEC3;
            --text-white: #FFFFFF;
            --border: #E8E9F0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(91, 106, 191, 0.08);
            --shadow-md: 0 6px 24px rgba(91, 106, 191, 0.12);
            --shadow-lg: 0 14px 40px rgba(91, 106, 191, 0.16);
            --shadow-hover: 0 18px 48px rgba(91, 106, 191, 0.22);
            --transition: all 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --spacer: 2rem;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-dark);
        }
        .logo i {
            font-size: 1.8rem;
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-medium);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .nav a:hover {
            color: var(--primary);
            background: rgba(91, 106, 191, 0.06);
        }
        .nav a.active {
            color: var(--primary);
            background: rgba(91, 106, 191, 0.10);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav a.nav-cta {
            background: var(--primary);
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(91, 106, 191, 0.30);
        }
        .nav a.nav-cta i {
            font-size: 0.9rem;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(91, 106, 191, 0.06);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .page-hero .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .page-hero .hero-stats .stat-item {
            text-align: center;
            color: var(--text-white);
        }
        .page-hero .hero-stats .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .page-hero .hero-stats .stat-item .label {
            font-size: 0.9rem;
            opacity: 0.80;
            font-weight: 400;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-medium);
            margin-bottom: 40px;
            max-width: 560px;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-header .section-title {
            margin-bottom: 4px;
        }
        .section-header .section-subtitle {
            margin-bottom: 0;
        }
        .section-link {
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.95rem;
        }
        .section-link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .section-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 分类标签导航 ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        .category-tabs .tab {
            padding: 8px 22px;
            border-radius: 100px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-medium);
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .category-tabs .tab:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(91, 106, 191, 0.04);
        }
        .category-tabs .tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 14px rgba(91, 106, 191, 0.25);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .card .card-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--border);
        }
        .card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card .card-body {
            padding: 22px 24px 26px;
        }
        .card .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(91, 106, 191, 0.08);
            color: var(--primary);
            margin-bottom: 10px;
        }
        .card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
            color: var(--text);
        }
        .card .card-body p {
            font-size: 0.9rem;
            color: var(--text-medium);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .card .card-body .card-meta i {
            margin-right: 4px;
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-card);
            padding: 18px 22px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .rank-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .rank-item .rank-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-light);
            min-width: 36px;
            text-align: center;
            font-feature-settings: "tnum";
        }
        .rank-item:nth-child(1) .rank-num {
            color: var(--secondary);
        }
        .rank-item:nth-child(2) .rank-num {
            color: var(--secondary);
        }
        .rank-item:nth-child(3) .rank-num {
            color: var(--secondary);
        }
        .rank-item .rank-content {
            flex: 1;
        }
        .rank-item .rank-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .rank-item .rank-content p {
            font-size: 0.85rem;
            color: var(--text-medium);
        }
        .rank-item .rank-badge {
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 100px;
            font-weight: 600;
            background: rgba(0, 184, 148, 0.10);
            color: var(--success);
        }
        .rank-item .rank-badge.hot {
            background: rgba(255, 107, 107, 0.10);
            color: var(--secondary);
        }

        /* ===== 专题卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card .feature-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--border);
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.04);
        }
        .feature-card .feature-body {
            padding: 24px 26px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .feature-body .feature-tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent-soft);
            color: #856404;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .feature-card .feature-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card .feature-body p {
            font-size: 0.92rem;
            color: var(--text-medium);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .feature-card .feature-body .feature-btn {
            align-self: flex-start;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: var(--text-white);
            font-weight: 500;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .feature-card .feature-body .feature-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(91, 106, 191, 0.28);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .faq-item .faq-question:hover {
            background: rgba(91, 106, 191, 0.03);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-medium);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            background: var(--text-white);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-section .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
            color: var(--primary-dark);
        }
        .cta-section .cta-btn i {
            font-size: 1rem;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-footer);
            color: rgba(255, 255, 255, 0.80);
            padding: 56px 0 0;
        }
        .footer .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, 0.06);
        }
        .footer .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer .footer-brand .logo i {
            color: var(--primary-light);
        }
        .footer .footer-brand .logo span {
            -webkit-text-fill-color: var(--text-white);
            background: none;
        }
        .footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--primary-light);
        }
        .footer ul li i {
            width: 20px;
            color: var(--primary-light);
            margin-right: 6px;
        }
        .footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 16px 20px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: block;
            }

            .page-hero {
                padding: 56px 0 60px;
                min-height: auto;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-stats {
                gap: 24px;
            }
            .page-hero .hero-stats .stat-item .num {
                font-size: 1.5rem;
            }

            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .rank-list {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                gap: 20px;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .category-tabs {
                gap: 8px;
            }
            .category-tabs .tab {
                padding: 6px 16px;
                font-size: 0.82rem;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.92rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .card .card-body {
                padding: 16px 18px 20px;
            }
            .rank-item {
                padding: 14px 16px;
                gap: 12px;
            }
            .rank-item .rank-num {
                font-size: 1.1rem;
                min-width: 28px;
            }
            .feature-card .feature-body {
                padding: 18px 20px 22px;
            }
            .container {
                padding: 0 14px;
            }
        }