/* roulang page: index */
:root {
            --color-primary: #1e3a4d;
            --color-primary-light: #2a5068;
            --color-accent: #c8963e;
            --color-accent-light: #d4a855;
            --color-bg: #faf9f6;
            --color-bg-alt: #f0ede6;
            --color-bg-dark: #1e3a4d;
            --color-text: #1c1c1c;
            --color-text-soft: #5a5a5a;
            --color-text-light: #8a8a8a;
            --color-border: #e8e6e1;
            --color-border-light: #f0ede8;
            --color-white: #ffffff;
            --color-success: #3b7a4e;
            --color-warning: #b8782e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --font-mono: 'SF Mono','Consolas','Monaco',monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1200px;
            --header-height: 68px;
        }
        *,*::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(--color-text);background:var(--color-bg);min-height:100vh;display:flex;flex-direction:column;}
        img{max-width:100%;height:auto;display:block;}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast);}
        a:hover{color:var(--color-accent);}
        ul,ol{list-style:none;}
        button,input,textarea,select{font-family:inherit;font-size:inherit;border:none;outline:none;background:none;}
        button{cursor:pointer;}
        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;}
        .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

        /* Header */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(250,249,246,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border);height:var(--header-height);display:flex;align-items:center;transition:box-shadow var(--transition-base);}
        .site-header.scrolled{box-shadow:var(--shadow-sm);}
        .header-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;}
        .logo-link{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.25rem;letter-spacing:-0.01em;color:var(--color-primary);white-space:nowrap;transition:opacity var(--transition-fast);}
        .logo-link:hover{opacity:0.82;color:var(--color-primary);}
        .logo-dot{width:9px;height:9px;border-radius:50%;background:var(--color-accent);flex-shrink:0;}

        .nav-links{display:flex;align-items:center;gap:4px;}
        .nav-links a{display:inline-flex;align-items:center;padding:8px 16px;font-size:0.925rem;font-weight:500;color:var(--color-text-soft);border-radius:var(--radius-sm);transition:color var(--transition-fast),background var(--transition-fast);position:relative;white-space:nowrap;}
        .nav-links a:hover{color:var(--color-primary);background:rgba(30,58,77,0.04);}
        .nav-links a.active{color:var(--color-primary);}
        .nav-links a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2.5px;border-radius:3px;background:var(--color-accent);}
        .nav-cta-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 20px;font-size:0.9rem;font-weight:600;color:var(--color-white);background:var(--color-accent);border-radius:var(--radius-md);transition:background var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);white-space:nowrap;}
        .nav-cta-btn:hover{background:var(--color-accent-light);color:var(--color-white);transform:translateY(-1px);box-shadow:var(--shadow-md);}

        .mobile-menu-btn{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;z-index:101;}
        .mobile-menu-btn span{display:block;width:24px;height:2px;background:var(--color-primary);border-radius:3px;transition:transform var(--transition-fast),opacity var(--transition-fast);}
        .mobile-menu-btn.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
        .mobile-menu-btn.open span:nth-child(2){opacity:0;}
        .mobile-menu-btn.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

        .mobile-nav{display:none;position:fixed;top:var(--header-height);left:0;right:0;bottom:0;background:var(--color-bg);z-index:99;padding:24px;flex-direction:column;gap:8px;overflow-y:auto;}
        .mobile-nav.open{display:flex;}
        .mobile-nav a{display:block;padding:14px 20px;font-size:1.05rem;font-weight:500;color:var(--color-text);border-radius:var(--radius-md);transition:background var(--transition-fast);}
        .mobile-nav a:hover{background:rgba(30,58,77,0.05);}
        .mobile-nav a.active{color:var(--color-primary);font-weight:700;background:rgba(30,58,77,0.04);}

        /* Hero */
        .hero-section{position:relative;padding:100px 0 90px;background:var(--color-bg-dark);color:var(--color-white);overflow:hidden;min-height:520px;display:flex;align-items:center;}
        .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.35;z-index:0;}
        .hero-overlay{position:absolute;inset:0;background:linear-gradient(160deg,rgba(30,58,77,0.88) 0%,rgba(20,42,56,0.94) 100%);z-index:1;}
        .hero-content{position:relative;z-index:2;max-width:720px;}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.22);border-radius:50px;font-size:0.85rem;font-weight:500;margin-bottom:24px;letter-spacing:0.02em;}
        .hero-badge .badge-dot{width:7px;height:7px;border-radius:50%;background:var(--color-accent);animation:pulse-dot 2s infinite;}
        @keyframes pulse-dot{0%,100%{opacity:1;}50%{opacity:0.4;}}
        .hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.2;letter-spacing:-0.02em;margin-bottom:20px;color:#ffffff;}
        .hero-title em{font-style:normal;color:var(--color-accent-light);}
        .hero-desc{font-size:1.1rem;line-height:1.75;color:rgba(255,255,255,0.78);margin-bottom:36px;max-width:560px;}
        .hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
        .btn{padding:13px 28px;font-size:0.95rem;font-weight:600;border-radius:var(--radius-md);transition:all var(--transition-fast);display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:none;text-align:center;}
        .btn-primary{background:var(--color-accent);color:var(--color-white);}
        .btn-primary:hover{background:var(--color-accent-light);color:var(--color-white);transform:translateY(-2px);box-shadow:var(--shadow-lg);}
        .btn-outline{background:transparent;color:var(--color-white);border:1.5px solid rgba(255,255,255,0.5);}
        .btn-outline:hover{background:rgba(255,255,255,0.08);color:var(--color-white);border-color:rgba(255,255,255,0.85);}
        .btn-ghost{background:rgba(255,255,255,0.1);color:var(--color-white);}
        .btn-ghost:hover{background:rgba(255,255,255,0.18);color:var(--color-white);}
        .btn-sm{padding:8px 18px;font-size:0.85rem;border-radius:var(--radius-sm);}
        .btn-lg{padding:16px 34px;font-size:1.05rem;border-radius:var(--radius-lg);}

        /* Sections */
        .section{padding:80px 0;}
        .section-alt{background:var(--color-bg-alt);}
        .section-dark{background:var(--color-bg-dark);color:var(--color-white);}
        .section-header{text-align:center;margin-bottom:52px;}
        .section-header .section-label{display:inline-block;font-size:0.82rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--color-accent);margin-bottom:10px;}
        .section-header h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;letter-spacing:-0.01em;color:inherit;}
        .section-header p{font-size:1rem;color:var(--color-text-soft);margin-top:10px;max-width:560px;margin-left:auto;margin-right:auto;}
        .section-dark .section-header p{color:rgba(255,255,255,0.7);}
        .section-dark .section-header h2{color:#fff;}

        /* Cards Grid */
        .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
        .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
        .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}

        /* Service Cards */
        .service-card{background:var(--color-white);border-radius:var(--radius-lg);padding:32px 28px;border:1px solid var(--color-border-light);transition:all var(--transition-base);position:relative;overflow:hidden;}
        .service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent;}
        .service-card .card-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:18px;background:rgba(30,58,77,0.06);color:var(--color-primary);}
        .service-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--color-primary);}
        .service-card p{font-size:0.925rem;color:var(--color-text-soft);line-height:1.65;}
        .service-card .card-tag{display:inline-block;margin-top:14px;font-size:0.78rem;font-weight:600;color:var(--color-accent);padding:4px 10px;background:rgba(200,150,62,0.08);border-radius:50px;}

        /* Category Entry Card */
        .category-entry-card{display:flex;align-items:center;gap:24px;background:var(--color-white);border-radius:var(--radius-lg);padding:24px;border:1px solid var(--color-border-light);transition:all var(--transition-base);cursor:pointer;}
        .category-entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:transparent;}
        .category-entry-card img{width:120px;height:90px;object-fit:cover;border-radius:var(--radius-md);flex-shrink:0;}
        .category-entry-card .entry-info h4{font-size:1.05rem;font-weight:700;color:var(--color-primary);margin-bottom:4px;}
        .category-entry-card .entry-info p{font-size:0.875rem;color:var(--color-text-soft);}
        .category-entry-card .entry-arrow{font-size:1.2rem;color:var(--color-accent);flex-shrink:0;transition:transform var(--transition-fast);}
        .category-entry-card:hover .entry-arrow{transform:translateX(4px);}

        /* News List */
        .news-list{display:flex;flex-direction:column;gap:0;}
        .news-item{display:flex;align-items:flex-start;gap:20px;padding:18px 20px;border-bottom:1px solid var(--color-border-light);transition:background var(--transition-fast);border-radius:var(--radius-sm);}
        .news-item:hover{background:rgba(30,58,77,0.02);}
        .news-item .news-date{font-size:0.8rem;color:var(--color-text-light);white-space:nowrap;min-width:70px;padding-top:3px;}
        .news-item .news-body{flex:1;min-width:0;}
        .news-item .news-title{font-size:1rem;font-weight:600;color:var(--color-primary);margin-bottom:4px;display:block;transition:color var(--transition-fast);}
        .news-item .news-title:hover{color:var(--color-accent);}
        .news-item .news-excerpt{font-size:0.875rem;color:var(--color-text-soft);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
        .news-item .news-category{display:inline-block;font-size:0.75rem;font-weight:600;color:var(--color-accent);padding:2px 8px;background:rgba(200,150,62,0.07);border-radius:50px;margin-top:6px;}
        .news-empty{padding:40px 20px;text-align:center;color:var(--color-text-soft);font-size:0.95rem;}

        /* Stats */
        .stats-row{display:flex;flex-wrap:wrap;gap:0;justify-content:center;}
        .stat-item{flex:1;min-width:160px;text-align:center;padding:24px 16px;}
        .stat-item .stat-number{font-size:2.6rem;font-weight:800;color:var(--color-accent);line-height:1;margin-bottom:6px;}
        .stat-item .stat-label{font-size:0.9rem;color:var(--color-text-soft);}
        .section-dark .stat-item .stat-number{color:var(--color-accent-light);}
        .section-dark .stat-item .stat-label{color:rgba(255,255,255,0.7);}

        /* Steps / Flow */
        .steps-list{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;}
        .step-card{flex:1;min-width:200px;max-width:280px;text-align:center;padding:28px 20px;background:var(--color-white);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);position:relative;transition:all var(--transition-base);}
        .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
        .step-number{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--color-primary);color:#fff;font-weight:700;font-size:1.1rem;margin-bottom:14px;}
        .step-card h4{font-size:1rem;font-weight:700;color:var(--color-primary);margin-bottom:6px;}
        .step-card p{font-size:0.85rem;color:var(--color-text-soft);}

        /* FAQ */
        .faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:8px;}
        .faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;background:var(--color-white);transition:all var(--transition-fast);}
        .faq-item:hover{border-color:var(--color-accent);}
        .faq-question{padding:18px 22px;font-weight:600;font-size:0.975rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--color-primary);gap:12px;user-select:none;}
        .faq-question .faq-icon{font-size:1.2rem;transition:transform var(--transition-fast);flex-shrink:0;color:var(--color-accent);}
        .faq-item.open .faq-question .faq-icon{transform:rotate(45deg);}
        .faq-answer{padding:0 22px 18px;font-size:0.9rem;color:var(--color-text-soft);line-height:1.7;display:none;}
        .faq-item.open .faq-answer{display:block;}

        /* CTA */
        .cta-section{text-align:center;padding:90px 0;}
        .cta-section h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;margin-bottom:14px;}
        .cta-section p{font-size:1rem;color:var(--color-text-soft);margin-bottom:28px;max-width:500px;margin-left:auto;margin-right:auto;}
        .section-dark.cta-section p{color:rgba(255,255,255,0.7);}
        .section-dark.cta-section h2{color:#fff;}

        /* Footer */
        .site-footer{padding:48px 0 32px;background:var(--color-bg-dark);color:rgba(255,255,255,0.7);margin-top:auto;}
        .footer-inner{display:flex;flex-wrap:wrap;gap:36px;justify-content:space-between;align-items:flex-start;}
        .footer-brand .footer-logo{font-weight:700;font-size:1.2rem;color:#fff;margin-bottom:8px;display:block;}
        .footer-brand p{font-size:0.85rem;max-width:280px;}
        .footer-links{display:flex;flex-wrap:wrap;gap:40px;}
        .footer-col h4{font-size:0.9rem;font-weight:700;color:#fff;margin-bottom:12px;}
        .footer-col a{display:block;font-size:0.85rem;color:rgba(255,255,255,0.6);padding:3px 0;transition:color var(--transition-fast);}
        .footer-col a:hover{color:var(--color-accent-light);}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.12);margin-top:32px;padding-top:20px;text-align:center;font-size:0.8rem;color:rgba(255,255,255,0.45);}

        /* Responsive */
        @media(max-width:1024px){
            .grid-3{grid-template-columns:repeat(2,1fr);}
            .grid-4{grid-template-columns:repeat(2,1fr);}
            .hero-section{padding:70px 0 60px;}
            .section{padding:60px 0;}
        }
        @media(max-width:768px){
            .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:20px;}
            .nav-links{display:none;}
            .mobile-menu-btn{display:flex;}
            .hero-section{padding:56px 0 48px;min-height:420px;}
            .hero-title{font-size:1.7rem;}
            .hero-desc{font-size:0.95rem;}
            .section{padding:48px 0;}
            .section-header{margin-bottom:36px;}
            .stats-row{gap:12px;}
            .stat-item{min-width:120px;padding:16px 10px;}
            .stat-item .stat-number{font-size:2rem;}
            .category-entry-card{flex-direction:column;text-align:center;}
            .category-entry-card img{width:100%;height:140px;}
            .news-item{flex-direction:column;gap:6px;padding:14px 16px;}
            .news-item .news-date{min-width:auto;}
            .footer-inner{flex-direction:column;gap:28px;}
            .footer-links{gap:24px;}
            .steps-list{flex-direction:column;align-items:center;}
            .step-card{max-width:100%;}
        }
        @media(max-width:520px){
            .container{padding:0 16px;}
            .header-inner{padding:0 16px;}
            .hero-actions{flex-direction:column;width:100%;}
            .hero-actions .btn{width:100%;justify-content:center;}
            .btn-lg{padding:14px 24px;font-size:0.95rem;}
            .stat-item .stat-number{font-size:1.6rem;}
            .faq-question{padding:14px 16px;font-size:0.9rem;}
            .faq-answer{padding:0 16px 14px;}
        }

/* roulang page: article */
:root {
            --primary: #0066cc;
            --primary-light: #338bff;
            --primary-dark: #004080;
            --secondary: #0f766e;
            --accent: #f97316;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 12px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.08);
            --transition: 0.2s ease;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; }
        button, input, select, textarea { font: inherit; }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            background: rgba(255,255,255,0.9);
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--primary);
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        /* Mobile nav toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: var(--text);
        }

        /* Article banner */
        .article-banner {
            background: linear-gradient(135deg, rgba(0,102,204,0.05) 0%, rgba(15,118,110,0.05) 100%);
            padding: 64px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.07;
            pointer-events: none;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin-bottom: 16px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .category-badge {
            background: var(--primary-light);
            color: white;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .article-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--text);
            max-width: 800px;
        }

        /* Main content layout */
        .content-wrapper {
            padding: 60px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            align-items: start;
        }
        .article-content {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            line-height: 1.8;
            font-size: 1.05rem;
        }
        .article-content h2 {
            font-size: 1.6rem;
            margin: 32px 0 12px;
            color: var(--primary-dark);
        }
        .article-content h3 {
            font-size: 1.25rem;
            margin: 24px 0 8px;
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 90px;
        }
        .side-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .side-card h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text);
        }
        .share-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .share-btn {
            flex: 1;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            padding: 10px;
            border-radius: var(--radius-sm);
            background: var(--border-light);
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: white;
        }

        /* Related articles */
        .related-section {
            padding: 80px 0;
            background: white;
        }
        .related-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 20px;
        }
        .related-card-body h5 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text);
        }
        .related-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .related-card-body a {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }
        .faq-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        details.faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            cursor: pointer;
        }
        details.faq-item summary {
            list-style: none;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
        }
        details.faq-item summary::-webkit-details-marker { display: none; }
        details.faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: transform var(--transition);
        }
        details.faq-item[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-item p {
            margin-top: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .btn {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: white;
            color: var(--primary);
        }
        .btn-primary:hover {
            background: #e0f2fe;
            transform: scale(1.02);
        }

        /* Footer */
        .site-footer {
            background: var(--text);
            color: #cbd5e1;
            padding: 60px 0 30px;
        }
        .footer-inner {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
        }
        .footer-brand {
            max-width: 300px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: white;
            display: block;
            margin-bottom: 12px;
        }
        .footer-links {
            display: flex;
            gap: 60px;
            flex-wrap: wrap;
        }
        .footer-col h4 {
            font-size: 1rem;
            color: white;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            margin-bottom: 10px;
            color: #94a3b8;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: white;
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #334155;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }

        /* Not found state */
        .not-found {
            text-align: center;
            padding: 80px 0;
        }
        .not-found h2 {
            font-size: 2rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 16px;
            }
            .nav-links.open { display: flex; }
            .article-title { font-size: 1.8rem; }
            .content-grid { display: block; }
            .related-grid { grid-template-columns: 1fr; }
            .article-content { padding: 24px; }
            .article-sidebar { grid-template-columns: 1fr; }
        }

/* roulang page: category1 */
/* ========================================
           设计变量 Design Tokens
           ======================================== */
        :root {
            --primary: #1a365d;
            --primary-light: #2c5282;
            --primary-dark: #0f2440;
            --accent: #c88e3f;
            --accent-light: #d9a85c;
            --accent-dark: #a0702e;
            --bg-page: #f7f8fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2a;
            --bg-dark-light: #152238;
            --bg-light: #edf2f7;
            --bg-accent-soft: #fdf6ed;
            --text-primary: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #5a6677;
            --text-light: #8895a7;
            --text-on-dark: #e8ecf1;
            --text-on-dark-muted: #b0bac5;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --border-medium: #d1d9e6;
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.09), 0 2px 6px rgba(0,0,0,0.05);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.11), 0 4px 10px rgba(0,0,0,0.06);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.14), 0 6px 16px rgba(0,0,0,0.07);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
            --max-width-narrow: 860px;
            --header-height: 68px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

        /* ========================================
           基础 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;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background-color: var(--bg-page);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

        ul, ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-primary);
            line-height: 1.3;
            font-weight: 700;
        }

        h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
        h2 { font-size: 1.9rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }

        p {
            margin-bottom: 1em;
        }
        p:last-child {
            margin-bottom: 0;
        }

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

        /* ========================================
           Header & 导航 - 极简高端文字导航
           ======================================== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            display: flex;
            align-items: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            background: rgba(255,255,255,0.94);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-logo .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius);
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
            transition: width var(--transition-fast);
        }
        .nav-links a.active:hover::after {
            width: 28px;
        }
        /* 汉堡菜单按钮 */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 101;
            background: none;
            border: none;
            width: 40px;
            height: 36px;
            justify-content: center;
            align-items: center;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 1px;
            transition: all var(--transition);
            transform-origin: center;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========================================
           主内容区
           ======================================== */
        .main-content {
            flex: 1;
        }

        /* ========================================
           分类 Banner
           ======================================== */
        .category-banner {
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 70px 0 64px;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,27,42,0.88) 0%, rgba(26,54,93,0.78) 50%, rgba(13,27,42,0.85) 100%);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-on-dark-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-on-dark-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .breadcrumb .separator {
            color: var(--text-on-dark-muted);
            opacity: 0.5;
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--text-on-dark);
            font-weight: 500;
        }
        .category-banner-title {
            color: #ffffff;
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .category-banner-desc {
            color: var(--text-on-dark-muted);
            font-size: 1.1rem;
            max-width: 600px;
            line-height: 1.7;
        }
        .category-banner-meta {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            color: var(--text-on-dark-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .category-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-banner-meta .meta-icon {
            color: var(--accent-light);
            font-size: 0.85rem;
        }

        /* ========================================
           板块通用样式
           ======================================== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section--sm {
            padding: var(--section-gap-sm) 0;
        }
        .section--alt {
            background: var(--bg-white);
        }
        .section--dark {
            background: var(--bg-dark);
            color: var(--text-on-dark);
        }
        .section--dark h2,
        .section--dark h3,
        .section--dark h4 {
            color: #ffffff;
        }
        .section--dark .section-subtitle {
            color: var(--text-on-dark-muted);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header--left {
            text-align: left;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-header--left .section-subtitle {
            margin: 0;
        }

        /* ========================================
           文章卡片网格
           ======================================== */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border-medium);
        }
        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-light);
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-image img {
            transform: scale(1.06);
        }
        .article-card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .article-card-tag {
            display: inline-block;
            padding: 4px 10px;
            font-size: 0.78rem;
            font-weight: 500;
            border-radius: 20px;
            background: rgba(255,255,255,0.92);
            color: var(--primary);
            backdrop-filter: blur(4px);
            letter-spacing: 0.01em;
        }
        .article-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.45;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }
        .article-card-body h3 a:hover {
            color: var(--primary-light);
        }
        .article-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .article-card-date {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .article-card-date i {
            font-size: 0.75rem;
            color: var(--text-light);
        }
        .article-card-readmore {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.84rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }
        .article-card-readmore:hover {
            color: var(--accent);
            gap: 7px;
        }
        .article-card-readmore i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }
        .article-card-readmore:hover i {
            transform: translateX(3px);
        }

        /* ========================================
           登录流程步骤
           ======================================== */
        .steps-section {
            background: var(--bg-white);
        }
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px 28px;
            border-radius: var(--radius-lg);
            background: var(--bg-page);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
            counter-increment: step;
        }
        .step-card:hover {
            box-shadow: var(--shadow);
            border-color: var(--border-medium);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .step-card:nth-child(even) .step-number {
            background: var(--accent);
        }
        .step-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-primary);
            font-weight: 600;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin: 0;
        }
        .step-connector {
            display: none;
        }

        /* ========================================
           深色信息区块
           ======================================== */
        .info-band {
            background: var(--bg-dark);
            padding: var(--section-gap) 0;
            color: var(--text-on-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }
        .info-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13,27,42,0.9);
            z-index: 1;
        }
        .info-band .container {
            position: relative;
            z-index: 2;
        }
        .info-band h2 {
            color: #ffffff;
        }
        .info-band .section-subtitle {
            color: var(--text-on-dark-muted);
        }
        .info-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .info-card {
            background: var(--bg-dark-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: all var(--transition);
            text-align: center;
        }
        .info-card:hover {
            border-color: rgba(255,255,255,0.18);
            background: rgba(255,255,255,0.04);
            transform: translateY(-3px);
        }
        .info-card-icon {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 14px;
            display: block;
        }
        .info-card h4 {
            color: #ffffff;
            font-size: 1.05rem;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .info-card p {
            color: var(--text-on-dark-muted);
            font-size: 0.9rem;
            line-height: 1.55;
            margin: 0;
        }

        /* ========================================
           FAQ 手风琴
           ======================================== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========================================
           CTA 区块
           ======================================== */
        .cta-section {
            background: var(--primary);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #ffffff;
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.78);
            font-size: 1.05rem;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius);
            transition: all var(--transition);
            letter-spacing: 0.01em;
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }
        .btn--accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(200,142,63,0.35);
        }
        .btn--accent:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 20px rgba(200,142,63,0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn--outline-light {
            border: 2px solid rgba(255,255,255,0.6);
            color: #ffffff;
            background: transparent;
        }
        .btn--outline-light:hover {
            border-color: #ffffff;
            background: rgba(255,255,255,0.08);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .btn--primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26,54,93,0.3);
        }
        .btn--primary:hover {
            background: var(--primary-light);
            box-shadow: 0 6px 20px rgba(26,54,93,0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ========================================
           页脚
           ======================================== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark-muted);
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .footer-inner {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            justify-content: space-between;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand {
            max-width: 300px;
            flex-shrink: 0;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            color: var(--text-on-dark-muted);
            line-height: 1.6;
            margin: 0;
            font-size: 0.88rem;
        }
        .footer-links {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            color: var(--text-on-dark-muted);
            padding: 5px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            font-size: 0.82rem;
            color: var(--text-on-dark-muted);
            opacity: 0.7;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ========================================
           分页
           ======================================== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-body);
            transition: all var(--transition-fast);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--bg-accent-soft);
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========================================
           响应式 - 平板 (768px - 1024px)
           ======================================== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
                --section-gap-sm: 38px;
            }
            h1 { font-size: 2.1rem; }
            h2 { font-size: 1.6rem; }
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .info-cards {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .category-banner {
                padding: 50px 0 44px;
            }
            .category-banner-title {
                font-size: 2.1rem;
            }
        }

        /* ========================================
           响应式 - 手机 (520px - 768px)
           ======================================== */
        @media (max-width: 768px) {
            :root {
                --section-gap: 44px;
                --section-gap-sm: 32px;
                --header-height: 60px;
            }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.45rem; }
            h3 { font-size: 1.15rem; }

            /* 移动端导航 */
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--bg-white);
                flex-direction: column;
                padding: 80px 28px 40px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition);
                z-index: 100;
                border-left: 1px solid var(--border-light);
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: var(--bg-light);
                border-left: 3px solid var(--accent);
                border-radius: 0 var(--radius) var(--radius) 0;
            }
            /* 移动端遮罩 */
            .nav-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0,0,0,0.4);
                z-index: 99;
                opacity: 0;
                pointer-events: none;
                transition: opacity var(--transition);
            }
            .nav-overlay.show {
                opacity: 1;
                pointer-events: auto;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .steps-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .info-cards {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .category-banner {
                padding: 40px 0 36px;
            }
            .category-banner-title {
                font-size: 1.7rem;
            }
            .category-banner-desc {
                font-size: 0.95rem;
            }
            .footer-inner {
                flex-direction: column;
                gap: 28px;
            }
            .footer-links {
                gap: 28px;
            }
            .footer-brand {
                max-width: 100%;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        /* ========================================
           响应式 - 小手机 (<520px)
           ======================================== */
        @media (max-width: 520px) {
            :root {
                --section-gap: 34px;
                --section-gap-sm: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .header-logo {
                font-size: 1.05rem;
            }
            .category-banner-title {
                font-size: 1.4rem;
            }
            .category-banner-desc {
                font-size: 0.88rem;
            }
            .category-banner-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .article-card-body {
                padding: 16px;
            }
            .article-card-body h3 {
                font-size: 1rem;
            }
            .faq-question {
                padding: 15px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .info-card {
                padding: 20px 16px;
            }
        }

        /* ========================================
           Focus 可访问性
           ======================================== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 2px;
        }
        .nav-links a:focus-visible {
            outline-offset: 0px;
            border-radius: var(--radius);
        }
        .btn:focus-visible {
            outline-offset: 3px;
            border-radius: var(--radius);
        }

        /* ========================================
           打印样式
           ======================================== */
        @media print {
            .site-header,
            .site-footer,
            .nav-toggle,
            .cta-section,
            .nav-overlay {
                display: none !important;
            }
            body {
                background: #fff;
                color: #000;
            }
            .category-banner {
                background: none !important;
                padding: 20px 0;
            }
            .category-banner::before {
                display: none;
            }
            .category-banner-title,
            .category-banner-desc,
            .breadcrumb,
            .category-banner-meta {
                color: #000 !important;
            }
            .articles-grid {
                grid-template-columns: 1fr 1fr;
            }
        }