/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --bg-deep: #060b1f;
            --bg-primary: #0a0f2c;
            --bg-card: #11183d;
            --bg-card-hover: #161f4f;
            --bg-surface: #181f45;
            --border-subtle: #1e2858;
            --border-glow: #2a3570;
            --text-primary: #f0f2fa;
            --text-secondary: #c4c9dd;
            --text-muted: #8890b5;
            --accent-cyan: #00c6f2;
            --accent-cyan-bright: #33d8ff;
            --accent-purple: #8b5cf6;
            --accent-purple-light: #a78bfa;
            --accent-green: #10b981;
            --accent-green-glow: #34d399;
            --accent-amber: #f59e0b;
            --accent-red: #ef4444;
            --gradient-hero: linear-gradient(160deg, #060b1f 0%, #0a1135 40%, #0f1a4a 100%);
            --gradient-card-cyan: linear-gradient(135deg, rgba(0,198,242,0.12) 0%, rgba(0,198,242,0.02) 100%);
            --gradient-card-purple: linear-gradient(135deg, rgba(139,92,246,0.12) 0%, rgba(139,92,246,0.02) 100%);
            --gradient-cta: linear-gradient(135deg, #00c6f2 0%, #8b5cf6 100%);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
            --shadow-glow-cyan: 0 0 24px rgba(0,198,242,0.18);
            --shadow-glow-purple: 0 0 24px rgba(139,92,246,0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1240px;
            --header-height: 68px;
        }

        /* ============ Reset & Base ============ */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}
        body{
            font-family:var(--font-sans);
            font-size:16px;
            line-height:1.65;
            color:var(--text-secondary);
            background:var(--bg-deep);
            min-height:100vh;
            overflow-x:hidden;
        }
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast);}
        img{max-width:100%;height:auto;display:block;}
        button,input,select,textarea{font-family:inherit;font-size:inherit;}
        button{cursor:pointer;border:none;background:none;}
        ul,ol{list-style:none;}
        h1,h2,h3,h4,h5,h6{color:var(--text-primary);line-height:1.3;font-weight:700;}

        /* ============ Container ============ */
        .container{
            width:100%;
            max-width:var(--container-max);
            margin:0 auto;
            padding:0 28px;
        }

        /* ============ Header & Navigation ============ */
        .site-header{
            position:sticky;
            top:0;
            z-index:1000;
            background:rgba(10,15,44,0.82);
            backdrop-filter:blur(18px);
            -webkit-backdrop-filter:blur(18px);
            border-bottom:1px solid var(--border-subtle);
            height:var(--header-height);
            display:flex;
            align-items:center;
            transition:background var(--transition-base), border-color var(--transition-base);
        }
        .site-header.scrolled{
            background:rgba(6,11,31,0.94);
            border-bottom-color:var(--border-glow);
            box-shadow:0 2px 20px rgba(0,0,0,0.5);
        }
        .header-inner{
            display:flex;
            align-items:center;
            justify-content:space-between;
            width:100%;
            max-width:var(--container-max);
            margin:0 auto;
            padding:0 28px;
        }
        .logo-link{
            display:flex;
            align-items:center;
            gap:10px;
            font-size:1.28rem;
            font-weight:800;
            color:var(--text-primary);
            letter-spacing:0.02em;
            white-space:nowrap;
            transition:color var(--transition-fast);
        }
        .logo-link:hover{color:var(--accent-cyan-bright);}
        .logo-icon{
            width:38px;
            height:38px;
            border-radius:var(--radius-sm);
            background:var(--gradient-cta);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.1rem;
            color:#fff;
            font-weight:900;
            flex-shrink:0;
        }
        .nav-list{display:flex;align-items:center;gap:6px;}
        .nav-list li{position:relative;}
        .nav-list a{
            display:block;
            padding:9px 18px;
            border-radius:var(--radius-sm);
            font-size:0.94rem;
            font-weight:600;
            color:var(--text-muted);
            transition:all var(--transition-fast);
            white-space:nowrap;
        }
        .nav-list a:hover{color:var(--text-primary);background:rgba(255,255,255,0.04);}
        .nav-list a.active{color:var(--accent-cyan);background:rgba(0,198,242,0.08);}
        .nav-list a.nav-cta{
            background:var(--gradient-cta);
            color:#fff;
            padding:9px 22px;
            border-radius:var(--radius-md);
            font-weight:700;
            box-shadow:var(--shadow-glow-cyan);
        }
        .nav-list a.nav-cta:hover{
            box-shadow:0 0 32px rgba(0,198,242,0.35);
            transform:translateY(-1px);
            color:#fff;
        }
        /* 移动端菜单按钮 */
        .menu-toggle{
            display:none;
            flex-direction:column;
            gap:5px;
            padding:8px;
            cursor:pointer;
            z-index:1001;
        }
        .menu-toggle span{
            display:block;
            width:26px;
            height:2.5px;
            background:var(--text-primary);
            border-radius:3px;
            transition:all var(--transition-fast);
        }
        .menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}
        .menu-toggle.active span:nth-child(2){opacity:0;}
        .menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}

        /* ============ Hero Section ============ */
        .hero{
            position:relative;
            padding:100px 0 110px;
            background:var(--gradient-hero);
            overflow:hidden;
        }
        .hero-bg{
            position:absolute;
            inset:0;
            background-image:url('/assets/images/backpic/back-1.png');
            background-size:cover;
            background-position:center;
            background-repeat:no-repeat;
            opacity:0.28;
            mix-blend-mode:soft-light;
        }
        .hero-grid-overlay{
            position:absolute;
            inset:0;
            background:
                radial-gradient(ellipse at 25% 50%, rgba(0,198,242,0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 40%, rgba(139,92,246,0.07) 0%, transparent 55%);
            pointer-events:none;
        }
        .hero .container{position:relative;z-index:2;}
        .hero-content{max-width:720px;}
        .hero-badge{
            display:inline-flex;
            align-items:center;
            gap:8px;
            background:rgba(0,198,242,0.1);
            border:1px solid rgba(0,198,242,0.25);
            border-radius:50px;
            padding:7px 18px;
            font-size:0.85rem;
            font-weight:600;
            color:var(--accent-cyan-bright);
            margin-bottom:24px;
            letter-spacing:0.03em;
        }
        .hero-badge .dot{
            width:8px;
            height:8px;
            border-radius:50%;
            background:var(--accent-green-glow);
            animation:pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot{
            0%,100%{opacity:1;box-shadow:0 0 8px var(--accent-green-glow);}
            50%{opacity:0.4;box-shadow:0 0 2px var(--accent-green-glow);}
        }
        .hero h1{
            font-size:3.2rem;
            font-weight:900;
            letter-spacing:-0.02em;
            margin-bottom:18px;
            color:var(--text-primary);
            line-height:1.18;
        }
        .hero h1 .highlight{
            background:var(--gradient-cta);
            -webkit-background-clip:text;
            -webkit-text-fill-color:transparent;
            background-clip:text;
        }
        .hero-desc{
            font-size:1.14rem;
            color:var(--text-muted);
            margin-bottom:36px;
            max-width:560px;
            line-height:1.7;
        }
        .hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
        .btn{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:13px 28px;
            border-radius:var(--radius-md);
            font-weight:700;
            font-size:0.98rem;
            transition:all var(--transition-base);
            letter-spacing:0.01em;
            white-space:nowrap;
        }
        .btn-primary{
            background:var(--gradient-cta);
            color:#fff;
            box-shadow:var(--shadow-glow-cyan);
        }
        .btn-primary:hover{
            box-shadow:0 0 40px rgba(0,198,242,0.4);
            transform:translateY(-2px);
        }
        .btn-outline{
            background:transparent;
            color:var(--text-primary);
            border:2px solid var(--border-glow);
        }
        .btn-outline:hover{
            border-color:var(--accent-cyan);
            background:rgba(0,198,242,0.06);
            box-shadow:var(--shadow-glow-cyan);
        }
        .hero-stats-row{
            display:flex;
            gap:40px;
            margin-top:48px;
            flex-wrap:wrap;
        }
        .hero-stat-item .stat-value{
            font-size:2rem;
            font-weight:900;
            color:var(--text-primary);
            font-family:var(--font-mono);
            letter-spacing:-0.02em;
        }
        .hero-stat-item .stat-label{
            font-size:0.85rem;
            color:var(--text-muted);
            margin-top:2px;
        }

        /* ============ Section Common ============ */
        .section{
            padding:80px 0;
        }
        .section-header{
            text-align:center;
            margin-bottom:52px;
        }
        .section-header h2{
            font-size:2.2rem;
            font-weight:800;
            margin-bottom:12px;
            letter-spacing:-0.01em;
        }
        .section-header p{
            font-size:1.02rem;
            color:var(--text-muted);
            max-width:560px;
            margin:0 auto;
        }
        .section-tag{
            display:inline-block;
            font-size:0.8rem;
            font-weight:700;
            text-transform:uppercase;
            letter-spacing:0.08em;
            color:var(--accent-cyan);
            margin-bottom:10px;
        }

        /* ============ Features Grid ============ */
        .features-section{
            background:var(--bg-primary);
            position:relative;
        }
        .features-section::before{
            content:'';
            position:absolute;
            top:0;
            left:50%;
            transform:translateX(-50%);
            width:60%;
            height:1px;
            background:linear-gradient(90deg,transparent,var(--border-glow),transparent);
        }
        .features-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:24px;
        }
        .feature-card{
            background:var(--bg-card);
            border:1px solid var(--border-subtle);
            border-radius:var(--radius-lg);
            padding:32px 26px 28px;
            transition:all var(--transition-base);
            position:relative;
            overflow:hidden;
        }
        .feature-card::after{
            content:'';
            position:absolute;
            top:-50%;
            right:-50%;
            width:120px;
            height:120px;
            border-radius:50%;
            background:radial-gradient(circle, rgba(0,198,242,0.06) 0%, transparent 70%);
            pointer-events:none;
            transition:all var(--transition-slow);
        }
        .feature-card:hover{
            border-color:var(--border-glow);
            background:var(--bg-card-hover);
            transform:translateY(-4px);
            box-shadow:var(--shadow-lg), var(--shadow-glow-cyan);
        }
        .feature-card:hover::after{
            width:200px;
            height:200px;
            top:-30%;
            right:-30%;
        }
        .feature-icon{
            width:48px;
            height:48px;
            border-radius:var(--radius-sm);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.5rem;
            margin-bottom:18px;
            position:relative;
            z-index:1;
        }
        .feature-icon.cyan{background:rgba(0,198,242,0.15);color:var(--accent-cyan-bright);}
        .feature-icon.purple{background:rgba(139,92,246,0.15);color:var(--accent-purple-light);}
        .feature-icon.green{background:rgba(16,185,129,0.15);color:var(--accent-green-glow);}
        .feature-icon.amber{background:rgba(245,158,11,0.15);color:var(--accent-amber);}
        .feature-card h3{
            font-size:1.1rem;
            font-weight:700;
            margin-bottom:8px;
            position:relative;
            z-index:1;
        }
        .feature-card p{
            font-size:0.9rem;
            color:var(--text-muted);
            line-height:1.6;
            position:relative;
            z-index:1;
        }

        /* ============ Stats Band ============ */
        .stats-band{
            background:var(--bg-surface);
            border-top:1px solid var(--border-subtle);
            border-bottom:1px solid var(--border-subtle);
            padding:52px 0;
        }
        .stats-band .container{
            display:flex;
            justify-content:space-around;
            flex-wrap:wrap;
            gap:32px;
        }
        .stat-block{
            text-align:center;
            flex:1;
            min-width:140px;
        }
        .stat-block .stat-number{
            font-size:2.6rem;
            font-weight:900;
            font-family:var(--font-mono);
            color:var(--text-primary);
            letter-spacing:-0.03em;
        }
        .stat-block .stat-unit{
            font-size:1rem;
            font-weight:600;
            color:var(--accent-cyan);
        }
        .stat-block .stat-desc{
            font-size:0.85rem;
            color:var(--text-muted);
            margin-top:4px;
        }

        /* ============ Category Entry ============ */
        .category-section{background:var(--bg-deep);}
        .category-cards{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:28px;
        }
        .category-card{
            background:var(--bg-card);
            border:1px solid var(--border-subtle);
            border-radius:var(--radius-lg);
            overflow:hidden;
            transition:all var(--transition-base);
            position:relative;
        }
        .category-card:hover{
            border-color:var(--border-glow);
            box-shadow:var(--shadow-lg);
            transform:translateY(-6px);
        }
        .category-card-img{
            width:100%;
            height:200px;
            object-fit:cover;
            display:block;
        }
        .category-card-body{
            padding:22px 24px 24px;
        }
        .category-card-body h3{
            font-size:1.15rem;
            font-weight:700;
            margin-bottom:6px;
        }
        .category-card-body p{
            font-size:0.88rem;
            color:var(--text-muted);
            margin-bottom:14px;
            line-height:1.55;
        }
        .category-card-body .tag-row{
            display:flex;
            gap:8px;
            flex-wrap:wrap;
        }
        .tag{
            display:inline-block;
            padding:4px 12px;
            border-radius:50px;
            font-size:0.78rem;
            font-weight:600;
            background:rgba(0,198,242,0.1);
            color:var(--accent-cyan-bright);
            letter-spacing:0.02em;
        }
        .tag.purple{background:rgba(139,92,246,0.1);color:var(--accent-purple-light);}
        .tag.green{background:rgba(16,185,129,0.1);color:var(--accent-green-glow);}

        /* ============ CMS News List ============ */
        .news-section{
            background:var(--bg-primary);
            position:relative;
        }
        .news-list{
            display:grid;
            grid-template-columns:repeat(2,1fr);
            gap:20px;
        }
        .news-card{
            display:flex;
            gap:18px;
            background:var(--bg-card);
            border:1px solid var(--border-subtle);
            border-radius:var(--radius-lg);
            padding:20px 22px;
            transition:all var(--transition-base);
            align-items:flex-start;
        }
        .news-card:hover{
            border-color:var(--border-glow);
            background:var(--bg-card-hover);
            box-shadow:var(--shadow-md);
        }
        .news-thumb{
            width:100px;
            height:70px;
            border-radius:var(--radius-sm);
            object-fit:cover;
            flex-shrink:0;
        }
        .news-info{flex:1;min-width:0;}
        .news-info .news-cat{
            font-size:0.75rem;
            font-weight:700;
            color:var(--accent-cyan);
            text-transform:uppercase;
            letter-spacing:0.05em;
            margin-bottom:4px;
        }
        .news-info h4{
            font-size:0.96rem;
            font-weight:700;
            line-height:1.4;
            margin-bottom:4px;
            display:-webkit-box;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
            overflow:hidden;
        }
        .news-info .news-date{
            font-size:0.78rem;
            color:var(--text-muted);
        }
        .news-empty{
            text-align:center;
            padding:48px 20px;
            color:var(--text-muted);
            font-size:1rem;
            grid-column:1/-1;
            background:var(--bg-card);
            border-radius:var(--radius-lg);
            border:1px dashed var(--border-subtle);
        }

        /* ============ Platform Highlights ============ */
        .highlights-section{background:var(--bg-deep);}
        .highlights-grid{
            display:grid;
            grid-template-columns:repeat(2,1fr);
            gap:32px;
            align-items:center;
        }
        .highlight-visual{
            border-radius:var(--radius-xl);
            overflow:hidden;
            border:1px solid var(--border-subtle);
            box-shadow:var(--shadow-lg);
        }
        .highlight-visual img{
            width:100%;
            height:auto;
            display:block;
        }
        .highlight-text h2{
            font-size:1.8rem;
            font-weight:800;
            margin-bottom:16px;
        }
        .highlight-text p{
            color:var(--text-muted);
            line-height:1.7;
            margin-bottom:20px;
        }
        .highlight-list{
            display:flex;
            flex-direction:column;
            gap:14px;
        }
        .highlight-list li{
            display:flex;
            align-items:flex-start;
            gap:10px;
            font-size:0.94rem;
            color:var(--text-secondary);
        }
        .highlight-list li .check-icon{
            flex-shrink:0;
            width:22px;
            height:22px;
            border-radius:50%;
            background:rgba(16,185,129,0.18);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:0.75rem;
            color:var(--accent-green-glow);
            margin-top:1px;
        }

        /* ============ FAQ ============ */
        .faq-section{background:var(--bg-primary);}
        .faq-list{
            max-width:800px;
            margin:0 auto;
            display:flex;
            flex-direction:column;
            gap:12px;
        }
        .faq-item{
            background:var(--bg-card);
            border:1px solid var(--border-subtle);
            border-radius:var(--radius-md);
            overflow:hidden;
            transition:all var(--transition-fast);
        }
        .faq-item:hover{border-color:var(--border-glow);}
        .faq-question{
            width:100%;
            text-align:left;
            padding:18px 24px;
            font-size:1rem;
            font-weight:700;
            color:var(--text-primary);
            display:flex;
            justify-content:space-between;
            align-items:center;
            gap:16px;
            transition:color var(--transition-fast);
        }
        .faq-question:hover{color:var(--accent-cyan-bright);}
        .faq-arrow{
            flex-shrink:0;
            width:28px;
            height:28px;
            border-radius:50%;
            background:rgba(255,255,255,0.04);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:0.75rem;
            transition:all var(--transition-base);
        }
        .faq-item.open .faq-arrow{
            background:rgba(0,198,242,0.15);
            transform:rotate(180deg);
        }
        .faq-answer{
            max-height:0;
            overflow:hidden;
            transition:max-height var(--transition-slow), padding var(--transition-base);
            padding:0 24px;
        }
        .faq-item.open .faq-answer{
            max-height:300px;
            padding:0 24px 20px;
        }
        .faq-answer p{
            font-size:0.9rem;
            color:var(--text-muted);
            line-height:1.7;
        }

        /* ============ CTA Section ============ */
        .cta-section{
            background:var(--bg-deep);
            position:relative;
            overflow:hidden;
        }
        .cta-section::before{
            content:'';
            position:absolute;
            inset:0;
            background-image:url('/assets/images/backpic/back-2.png');
            background-size:cover;
            background-position:center;
            opacity:0.15;
            mix-blend-mode:soft-light;
        }
        .cta-inner{
            position:relative;
            z-index:2;
            background:var(--bg-card);
            border:1px solid var(--border-glow);
            border-radius:var(--radius-xl);
            padding:56px 48px;
            text-align:center;
            box-shadow:var(--shadow-lg);
        }
        .cta-inner h2{
            font-size:2rem;
            font-weight:800;
            margin-bottom:12px;
        }
        .cta-inner p{
            color:var(--text-muted);
            margin-bottom:28px;
            font-size:1rem;
            max-width:500px;
            margin-left:auto;
            margin-right:auto;
        }
        .cta-inner .btn-primary{
            font-size:1.05rem;
            padding:15px 36px;
            border-radius:var(--radius-md);
        }

        /* ============ Footer ============ */
        .site-footer{
            background:var(--bg-primary);
            border-top:1px solid var(--border-subtle);
            padding:48px 0 28px;
        }
        .footer-grid{
            display:grid;
            grid-template-columns:2fr 1fr 1fr 1fr;
            gap:40px;
            margin-bottom:36px;
        }
        .footer-brand .footer-logo{
            font-size:1.2rem;
            font-weight:800;
            color:var(--text-primary);
            margin-bottom:10px;
            display:block;
        }
        .footer-brand p{
            font-size:0.85rem;
            color:var(--text-muted);
            line-height:1.6;
        }
        .footer-col h4{
            font-size:0.9rem;
            font-weight:700;
            color:var(--text-primary);
            margin-bottom:14px;
            letter-spacing:0.03em;
        }
        .footer-col ul{display:flex;flex-direction:column;gap:8px;}
        .footer-col ul a{
            font-size:0.85rem;
            color:var(--text-muted);
            transition:color var(--transition-fast);
        }
        .footer-col ul a:hover{color:var(--accent-cyan-bright);}
        .footer-bottom{
            border-top:1px solid var(--border-subtle);
            padding-top:22px;
            display:flex;
            justify-content:space-between;
            flex-wrap:wrap;
            gap:12px;
            font-size:0.82rem;
            color:var(--text-muted);
        }

        /* ============ Responsive ============ */
        @media (max-width:1024px){
            .features-grid{grid-template-columns:repeat(2,1fr);}
            .category-cards{grid-template-columns:repeat(2,1fr);}
            .highlights-grid{grid-template-columns:1fr;gap:24px;}
            .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
            .hero h1{font-size:2.5rem;}
            .hero{padding:70px 0 80px;}
            .section{padding:56px 0;}
        }
        @media (max-width:768px){
            .container{padding:0 18px;}
            .header-inner{padding:0 18px;}
            .nav-list{
                position:fixed;
                top:0;
                right:-100%;
                width:280px;
                height:100vh;
                background:var(--bg-card);
                flex-direction:column;
                padding:90px 28px 40px;
                gap:4px;
                transition:right var(--transition-base);
                box-shadow:var(--shadow-lg);
                border-left:1px solid var(--border-subtle);
                z-index:999;
            }
            .nav-list.active{right:0;}
            .nav-list a{padding:12px 16px;font-size:1rem;width:100%;}
            .menu-toggle{display:flex;}
            .features-grid{grid-template-columns:1fr;gap:16px;}
            .category-cards{grid-template-columns:1fr;gap:20px;}
            .news-list{grid-template-columns:1fr;}
            .hero h1{font-size:2rem;}
            .hero-desc{font-size:1rem;}
            .hero-stats-row{gap:24px;}
            .stats-band .container{gap:20px;}
            .stat-block .stat-number{font-size:2rem;}
            .cta-inner{padding:36px 24px;}
            .cta-inner h2{font-size:1.5rem;}
            .footer-grid{grid-template-columns:1fr;gap:24px;}
            .section-header h2{font-size:1.7rem;}
            .highlight-text h2{font-size:1.4rem;}
            .hero-content{max-width:100%;}
        }
        @media (max-width:520px){
            .hero h1{font-size:1.65rem;}
            .hero{padding:50px 0 56px;}
            .hero-btns{flex-direction:column;gap:10px;}
            .hero-btns .btn{width:100%;justify-content:center;}
            .hero-stats-row{gap:16px;}
            .hero-stat-item .stat-value{font-size:1.5rem;}
            .section{padding:40px 0;}
            .section-header h2{font-size:1.4rem;}
            .btn{padding:11px 20px;font-size:0.9rem;}
            .feature-card{padding:22px 18px;}
            .category-card-img{height:160px;}
            .news-card{flex-direction:column;gap:12px;}
            .news-thumb{width:100%;height:140px;}
            .stats-band .container{flex-direction:column;align-items:center;}
            .faq-question{padding:14px 18px;font-size:0.9rem;}
            .faq-answer{padding:0 18px;}
            .faq-item.open .faq-answer{padding:0 18px 16px;}
            .cta-inner{padding:28px 18px;}
            .logo-link{font-size:1.05rem;}
        }

/* roulang page: article */
:root {
            --color-primary: #0f1a3c;
            --color-primary-light: #1a2d5a;
            --color-accent: #00d4ff;
            --color-accent-glow: rgba(0, 212, 255, 0.35);
            --color-accent-dim: rgba(0, 212, 255, 0.12);
            --color-purple: #7c5cfc;
            --color-purple-glow: rgba(124, 92, 252, 0.3);
            --color-bg: #f3f4f8;
            --color-bg-alt: #e8ecf3;
            --color-surface: #ffffff;
            --color-surface-dark: #0d1128;
            --color-surface-card: #ffffff;
            --color-text: #1a1f36;
            --color-text-secondary: #5a6072;
            --color-text-muted: #8890a5;
            --color-text-light: #c5cad8;
            --color-border: #e2e5ef;
            --color-border-light: rgba(255, 255, 255, 0.08);
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --shadow-xs: 0 1px 3px rgba(15, 26, 60, 0.04);
            --shadow-sm: 0 2px 8px rgba(15, 26, 60, 0.06);
            --shadow-md: 0 6px 20px rgba(15, 26, 60, 0.08);
            --shadow-lg: 0 12px 36px rgba(15, 26, 60, 0.10);
            --shadow-xl: 0 20px 50px rgba(15, 26, 60, 0.13);
            --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.18);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Menlo', monospace;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 72px;
            --spacing-3xl: 96px;
            --max-width: 1200px;
            --max-width-article: 820px;
            --header-height: 68px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
        }

        *,
        *::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;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container--narrow {
            max-width: var(--max-width-article);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            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-md);
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.22rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.82;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 800;
            box-shadow: 0 2px 12px rgba(15, 26, 60, 0.25);
            flex-shrink: 0;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-list a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.94rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-list a:hover {
            color: var(--color-primary);
            background: rgba(15, 26, 60, 0.04);
        }

        .nav-list a.active {
            color: var(--color-primary);
            background: rgba(15, 26, 60, 0.07);
            font-weight: 600;
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--color-accent) 0%, #00b8e0 100%) !important;
            color: #0a1228 !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 22px !important;
            box-shadow: 0 2px 14px var(--color-accent-glow);
            margin-left: 6px;
            transition: all var(--transition-base) !important;
        }

        .nav-cta:hover {
            box-shadow: 0 4px 22px rgba(0, 212, 255, 0.45) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #1adcff 0%, #00c8f0 100%) !important;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .menu-toggle:hover {
            background: rgba(15, 26, 60, 0.05);
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .menu-toggle.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Article Banner */
        .article-banner {
            position: relative;
            padding: var(--spacing-3xl) 0 var(--spacing-xl);
            background: var(--color-surface-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(13, 17, 40, 0.72) 0%,
                    rgba(13, 17, 40, 0.88) 60%,
                    rgba(13, 17, 40, 0.96) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .article-banner-inner {
            position: relative;
            z-index: 2;
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--color-accent);
            transition: color var(--transition-fast);
        }

        .article-breadcrumb a:hover {
            color: #fff;
        }

        .article-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
            user-select: none;
        }

        .article-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: var(--spacing-sm);
        }

        .article-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(0, 212, 255, 0.13);
            color: var(--color-accent);
            border: 1px solid rgba(0, 212, 255, 0.25);
            backdrop-filter: blur(4px);
        }

        .article-badge--time {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-light);
            border-color: rgba(255, 255, 255, 0.12);
        }

        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.35;
            color: #ffffff;
            letter-spacing: -0.01em;
            margin-bottom: var(--spacing-sm);
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }

        .article-meta-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--color-accent);
            opacity: 0.7;
        }

        /* Main Content */
        .article-main {
            flex: 1;
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: var(--spacing-xl);
            align-items: start;
        }

        .article-body {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            line-height: 1.85;
            font-size: 1.05rem;
            color: var(--color-text);
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: var(--spacing-lg) 0 var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 2px solid var(--color-border);
            letter-spacing: 0.01em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: var(--spacing-md) 0 var(--spacing-xs);
        }

        .article-body p {
            margin-bottom: var(--spacing-sm);
            color: var(--color-text);
        }

        .article-body ul,
        .article-body ol {
            margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
            color: var(--color-text);
        }

        .article-body ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
        }

        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .article-body ol li {
            padding-left: 4px;
            margin-bottom: 8px;
            list-style-type: decimal;
            list-style-position: inside;
        }

        .article-body blockquote {
            margin: var(--spacing-md) 0;
            padding: var(--spacing-sm) var(--spacing-md);
            border-left: 4px solid var(--color-accent);
            background: rgba(0, 212, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-secondary);
        }

        .article-body strong {
            color: var(--color-primary);
            font-weight: 700;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: var(--spacing-md) auto;
            box-shadow: var(--shadow-sm);
        }

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

        .article-body a:hover {
            color: #00b0d6;
        }

        .article-body code {
            background: rgba(15, 26, 60, 0.06);
            padding: 3px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--color-primary);
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            position: sticky;
            top: calc(var(--header-height) + var(--spacing-md));
        }

        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 .dot-indicator {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
            }
            50% {
                box-shadow: 0 0 16px rgba(16, 185, 129, 0.8);
            }
        }

        .sidebar-stat-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-stat-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 14px;
            background: rgba(15, 26, 60, 0.03);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
        }

        .sidebar-stat-label {
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .sidebar-stat-value {
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-mono);
            font-size: 0.95rem;
        }

        .sidebar-stat-value.highlight {
            color: var(--color-accent);
            text-shadow: 0 0 8px var(--color-accent-glow);
        }

        .sidebar-related {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-related-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .sidebar-related-item:hover {
            background: rgba(15, 26, 60, 0.04);
            transform: translateX(3px);
        }

        .sidebar-related-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .sidebar-related-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-related-info .rel-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.3;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 4px;
        }

        .sidebar-related-info .rel-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* Data Highlight Section */
        .data-highlight-section {
            padding: var(--spacing-xl) 0;
            background: var(--color-surface-dark);
            position: relative;
            overflow: hidden;
        }

        .data-highlight-section::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -100px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 92, 252, 0.18) 0%, transparent 70%);
            pointer-events: none;
            z-index: 1;
        }

        .data-highlight-section .container {
            position: relative;
            z-index: 2;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }

        .section-label::before {
            content: '';
            width: 18px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
            box-shadow: 0 0 6px var(--color-accent-glow);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: var(--spacing-lg);
            letter-spacing: -0.01em;
        }

        .data-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .data-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            backdrop-filter: blur(6px);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .data-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.03);
            transform: translateY(-3px);
        }

        .data-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
            background: rgba(0, 212, 255, 0.1);
            color: var(--color-accent);
            border: 1px solid rgba(0, 212, 255, 0.2);
        }

        .data-card-value {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: #ffffff;
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }

        .data-card-value .unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-light);
            margin-left: 4px;
        }

        .data-card-label {
            font-size: 0.88rem;
            color: var(--color-text-light);
            font-weight: 500;
        }

        .data-card-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 8px;
            padding: 3px 10px;
            border-radius: 12px;
        }

        .data-card-trend.up {
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
        }

        .data-card-trend.down {
            background: rgba(239, 68, 68, 0.15);
            color: #f87171;
        }

        /* Related Articles Section */
        .related-section {
            padding: var(--spacing-xl) 0;
            background: var(--color-bg);
        }

        .related-section .section-label {
            color: var(--color-purple);
        }

        .related-section .section-label::before {
            background: var(--color-purple);
            box-shadow: 0 0 6px var(--color-purple-glow);
        }

        .related-section .section-title {
            color: var(--color-primary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(124, 92, 252, 0.3);
        }

        .related-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--color-bg-alt);
        }

        .related-card-body {
            padding: var(--spacing-md);
        }

        .related-card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(124, 92, 252, 0.1);
            color: var(--color-purple);
            margin-bottom: 8px;
        }

        .related-card h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* CTA Section */
        .cta-section {
            padding: var(--spacing-2xl) 0;
            background: linear-gradient(180deg, var(--color-surface-dark) 0%, #0a1030 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 65%);
            pointer-events: none;
            z-index: 1;
        }

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

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1.08rem;
            color: var(--color-text-light);
            max-width: 560px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-accent) 0%, #00b8e0 100%);
            color: #0a1228;
            box-shadow: 0 4px 20px var(--color-accent-glow);
        }

        .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #ffffff;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }

        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: var(--spacing-3xl) var(--spacing-md);
        }

        .not-found-icon {
            font-size: 4rem;
            margin-bottom: var(--spacing-md);
            opacity: 0.5;
        }

        .not-found-state h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }

        .not-found-state p {
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-lg);
            font-size: 1.05rem;
        }

        /* Footer */
        .site-footer {
            background: var(--color-surface-dark);
            color: var(--color-text-light);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            border-top: 1px solid var(--color-border-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            display: block;
            margin-bottom: var(--spacing-xs);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--color-text-light);
            opacity: 0.8;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--color-text-light);
            opacity: 0.75;
            transition: all var(--transition-fast);
        }

        .footer-col ul a:hover {
            opacity: 1;
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border-light);
            font-size: 0.82rem;
            color: var(--color-text-light);
            opacity: 0.6;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }

            .data-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }

            .article-banner h1 {
                font-size: 1.9rem;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-base);
                z-index: 999;
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 6px;
                justify-content: center;
                border-radius: 10px !important;
            }

            .article-banner {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }

            .article-banner h1 {
                font-size: 1.55rem;
            }

            .article-body {
                padding: var(--spacing-md);
                font-size: 0.98rem;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .data-cards-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .data-card-value {
                font-size: 1.6rem;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .related-card-img {
                height: 150px;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.3rem;
            }

            .article-breadcrumb {
                font-size: 0.78rem;
            }

            .data-cards-grid {
                grid-template-columns: 1fr;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-card-img {
                height: 180px;
            }

            .article-body {
                padding: var(--spacing-sm);
                font-size: 0.94rem;
                border-radius: var(--radius-md);
            }

            .btn-group {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .section-title {
                font-size: 1.25rem;
            }

            .data-card-value {
                font-size: 1.4rem;
            }

            .logo-link span:last-child {
                font-size: 1rem;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --bg-deep: #060b14;
            --bg-primary: #0a0f1b;
            --bg-secondary: #0f1523;
            --bg-card: #131a2a;
            --bg-card-hover: #182035;
            --bg-card-alt: #161d30;
            --bg-input: #0c1220;
            --text-primary: #e4e7ec;
            --text-secondary: #9da5b3;
            --text-muted: #6b7280;
            --text-bright: #f1f5f9;
            --accent-blue: #0ea5e9;
            --accent-cyan: #06b6d4;
            --accent-teal: #14b8a6;
            --accent-green: #10b981;
            --accent-emerald: #34d399;
            --accent-orange: #f97316;
            --accent-amber: #f59e0b;
            --accent-red: #ef4444;
            --accent-rose: #f43f5e;
            --glow-blue: rgba(14, 165, 233, 0.35);
            --glow-cyan: rgba(6, 182, 212, 0.3);
            --glow-green: rgba(16, 185, 129, 0.3);
            --glow-card: rgba(14, 165, 233, 0.08);
            --border-subtle: #1a2235;
            --border-card: #1e293b;
            --border-glow: rgba(14, 165, 233, 0.2);
            --border-active: #0ea5e9;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.12);
            --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(14, 165, 233, 0.15);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        /* ========== 基础重置 ========== */
        *, *::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: 1.65;
            color: var(--text-primary);
            background-color: var(--bg-deep);
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(14, 165, 233, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(6, 182, 212, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 70%, rgba(16, 185, 129, 0.03) 0%, transparent 50%);
            min-height: 100vh;
        }
        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-bright); }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 18px; }
        }

        /* ========== 头部导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 15, 27, 0.82);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(6, 11, 20, 0.92);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 28px;
            height: 64px;
            max-width: 1320px;
            margin: 0 auto;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-bright);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover { opacity: 0.85; }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-xs);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            box-shadow: 0 0 18px var(--glow-blue);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list li a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-list li a:hover {
            color: var(--text-bright);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-list li a.active {
            color: var(--accent-cyan);
            background: rgba(6, 182, 212, 0.1);
            font-weight: 600;
        }
        .nav-list li a.nav-cta {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 24px;
            box-shadow: 0 0 20px var(--glow-blue);
            transition: all var(--transition-base);
        }
        .nav-list li a.nav-cta:hover {
            box-shadow: 0 0 30px rgba(14, 165, 233, 0.5);
            transform: translateY(-1px);
            color: #fff;
            background: linear-gradient(135deg, #0ea5e9, #06b6d4);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        @media (max-width: 860px) {
            .menu-toggle { display: flex; }
            .nav-list {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(10, 15, 27, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-base);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list li a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 1rem;
            }
            .nav-list li a.nav-cta {
                margin-top: 6px;
            }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 14px; height: 56px; }
            .logo-link { font-size: 1rem; gap: 7px; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.9rem; }
            .nav-list { top: 56px; padding: 16px 14px; }
        }

        /* ========== 分类 Banner ========== */
        .category-banner {
            position: relative;
            padding: 80px 0 70px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-color: var(--bg-primary);
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 20, 0.7) 0%, rgba(10, 15, 27, 0.92) 60%, var(--bg-deep) 100%);
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.35), var(--accent-cyan), rgba(14, 165, 233, 0.35), transparent);
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            text-align: center;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 16px;
            background: rgba(14, 165, 233, 0.12);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .banner-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--accent-green); }
            50% { opacity: 0.4; box-shadow: 0 0 12px var(--accent-green); }
        }
        .banner-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .banner-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .banner-stats-row {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .banner-stat {
            text-align: center;
        }
        .banner-stat .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .banner-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .category-banner { padding: 50px 0 44px; }
            .banner-title { font-size: 2rem; }
            .banner-desc { font-size: 0.95rem; }
            .banner-stats-row { gap: 24px; }
            .banner-stat .stat-num { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .banner-title { font-size: 1.5rem; }
            .banner-stats-row { gap: 16px; }
        }

        /* ========== 板块通用 ========== */
        .section { padding: 70px 0; }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section { padding: 44px 0; }
            .section-title { font-size: 1.5rem; }
            .section-header { margin-bottom: 32px; }
        }

        /* ========== 数据概览卡片 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .stat-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            background: var(--bg-card-hover);
        }
        .stat-card:hover::before { opacity: 1; }
        .stat-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .stat-card-icon {
            font-size: 1.8rem;
            line-height: 1;
        }
        .stat-card-change {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-green);
            background: rgba(16, 185, 129, 0.1);
            padding: 3px 10px;
            border-radius: 50px;
        }
        .stat-card-value {
            font-size: 2.6rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--text-bright);
            letter-spacing: -0.03em;
            line-height: 1;
        }
        .stat-card-value .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 4px;
            letter-spacing: 0;
        }
        .stat-card-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr; gap: 12px; }
            .stat-card { padding: 18px 16px; }
            .stat-card-value { font-size: 2rem; }
        }

        /* ========== 实时赛事板块 ========== */
        .live-section-bg {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .live-matches-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 16px;
        }
        .live-match-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: all var(--transition-base);
            position: relative;
        }
        .live-match-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
        }
        .live-match-card .match-league {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 2px 10px;
            background: rgba(239, 68, 68, 0.15);
            color: var(--accent-red);
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 700;
            animation: live-pulse 2s ease-in-out infinite;
        }
        @keyframes live-pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }
        .match-teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .match-team {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-bright);
            flex: 1;
            text-align: center;
            line-height: 1.3;
        }
        .match-score {
            font-size: 2rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: #fff;
            letter-spacing: -0.02em;
            min-width: 70px;
            text-align: center;
            background: rgba(14, 165, 233, 0.08);
            border-radius: var(--radius-sm);
            padding: 6px 14px;
        }
        .match-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .match-heat {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.78rem;
            color: var(--accent-orange);
        }
        .heat-bar {
            width: 50px;
            height: 4px;
            background: var(--border-card);
            border-radius: 2px;
            overflow: hidden;
        }
        .heat-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-red));
            border-radius: 2px;
            transition: width var(--transition-slow);
        }
        @media (max-width: 768px) {
            .live-matches-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .match-score { font-size: 1.5rem; min-width: 56px; padding: 4px 10px; }
            .match-team { font-size: 0.9rem; }
        }

        /* ========== 赛程预告板块 ========== */
        .upcoming-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }
        .upcoming-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: all var(--transition-base);
        }
        .upcoming-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }
        .upcoming-info { flex: 1; }
        .upcoming-league {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-teal);
            letter-spacing: 0.04em;
        }
        .upcoming-teams {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-bright);
            margin: 4px 0;
        }
        .upcoming-date {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .upcoming-heat {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
        }
        .upcoming-heat .heat-num {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-amber);
            font-family: var(--font-mono);
        }
        .upcoming-heat .heat-label {
            font-size: 0.7rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .upcoming-list { grid-template-columns: 1fr; }
        }

        /* ========== 联赛覆盖板块 ========== */
        .leagues-band {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 50px 0;
        }
        .leagues-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 10px;
            scrollbar-width: thin;
            scrollbar-color: var(--border-card) transparent;
            -webkit-overflow-scrolling: touch;
        }
        .leagues-scroll::-webkit-scrollbar { height: 5px; }
        .leagues-scroll::-webkit-scrollbar-track { background: transparent; }
        .leagues-scroll::-webkit-scrollbar-thumb { background: var(--border-card); border-radius: 10px; }
        .league-tag {
            flex-shrink: 0;
            padding: 10px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .league-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(6, 182, 212, 0.06);
            box-shadow: 0 0 14px rgba(6, 182, 212, 0.1);
        }
        .league-tag.featured {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(6, 182, 212, 0.08);
            font-weight: 600;
        }

        /* ========== 数据处理流程 ========== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .process-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
        }
        .process-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .process-icon {
            font-size: 2.5rem;
            margin-bottom: 14px;
            display: block;
        }
        .process-step {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            margin-bottom: 6px;
        }
        .process-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-bright);
            margin-bottom: 8px;
        }
        .process-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .process-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .process-grid { grid-template-columns: 1fr; }
        }

        /* ========== FAQ 板块 ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-bright);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 14px;
        }
        .faq-question:hover { color: var(--accent-cyan); }
        .faq-arrow {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--accent-cyan); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .faq-question { font-size: 0.9rem; padding: 15px 16px; }
            .faq-answer-inner { padding: 0 16px 15px; font-size: 0.85rem; }
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            border-top: 1px solid var(--border-subtle);
            text-align: center;
            padding: 70px 0;
        }
        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 24px;
            position: relative;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: 0 0 22px var(--glow-blue);
        }
        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(14, 165, 233, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            border: 1.5px solid var(--border-glow);
            color: var(--accent-cyan);
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(6, 182, 212, 0.08);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(6, 182, 212, 0.15);
        }
        @media (max-width: 520px) {
            .cta-card { padding: 32px 18px; }
            .cta-card h2 { font-size: 1.3rem; }
            .btn { padding: 11px 22px; font-size: 0.9rem; }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 28px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-bright);
            display: block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: var(--accent-cyan); }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 22px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ========== 工具类 ========== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .gap-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }