/* roulang page: index */
:root{
            --primary:#4338ca;--primary-light:#6366f1;--primary-dark:#3730a3;--primary-bg:#eef2ff;
            --accent:#f59e0b;--accent-light:#fef3c7;--dark:#0f172a;--text:#1e293b;--text-light:#64748b;
            --text-muted:#94a3b8;--bg:#f8fafc;--white:#fff;--border:#e2e8f0;--border-dark:#cbd5e1;
            --radius-sm:8px;--radius-md:16px;--radius-lg:28px;--shadow-sm:0 1px 3px rgba(0,0,0,.08);
            --shadow-md:0 6px 20px rgba(0,0,0,.06);--shadow-lg:0 16px 48px rgba(0,0,0,.12);
            --shadow-primary:0 8px 30px rgba(67,56,202,.25);--transition:.3s cubic-bezier(.4,0,.2,1);
        }
        *,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
        html{scroll-behavior:smooth;font-size:16px}
        body{font-family:"Inter","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
            color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
        a{text-decoration:none;color:inherit;cursor:pointer}
        img{display:block;max-width:100%;height:auto}
        button{border:none;background:none;cursor:pointer;font-family:inherit}
        input,textarea,select{font-family:inherit;font-size:1rem;border:2px solid var(--border);border-radius:var(--radius-sm);padding:.65rem 1rem;outline:none;transition:border-color .3s,box-shadow .3s}
        input:focus,textarea:focus,select:focus,button:focus-visible,a:focus-visible{border-color:var(--primary);box-shadow:0 0 0 4px rgba(67,56,202,.15);outline:none}
        .container{max-width:1280px;margin:0 auto;padding:0 24px;width:100%}
        .text-center{text-align:center}
        .section-pad{padding:88px 0}

        .btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.85rem 2rem;
            border-radius:999px;font-weight:600;font-size:.95rem;transition:var(--transition);letter-spacing:.01em}
        .btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-primary)}
        .btn-primary:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:0 12px 36px rgba(67,56,202,.35)}
        .btn-light{background:#fff;color:var(--primary);box-shadow:var(--shadow-sm)}
        .btn-light:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);color:var(--primary-dark)}
        .btn-outline{border:2px solid rgba(255,255,255,.85);color:#fff;backdrop-filter:blur(4px)}
        .btn-outline:hover{background:rgba(255,255,255,.15);transform:translateY(-3px)}
        .btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 30px rgba(245,158,11,.3)}
        .btn-accent:hover{background:#d97706;transform:translateY(-3px)}
        .btn-lg{padding:1.05rem 2.6rem;font-size:1.05rem}

        .tag{display:inline-flex;align-items:center;gap:.3rem;padding:.3rem .9rem;background:var(--primary-bg);
            color:var(--primary);border-radius:999px;font-size:.8rem;font-weight:600;letter-spacing:.02em}
        .tag-accent{background:var(--accent-light);color:#b45309}
        .tag-dark{background:rgba(255,255,255,.12);color:#fff;backdrop-filter:blur(6px)}

        .section-header{margin-bottom:48px}
        .section-eyebrow{display:inline-flex;align-items:center;gap:.4rem;font-size:.85rem;font-weight:700;
            color:var(--primary);text-transform:uppercase;letter-spacing:.12em;margin-bottom:12px}
        .section-title{font-size:clamp(1.8rem,3.2vw,2.7rem);font-weight:800;line-height:1.22;color:var(--dark);margin-bottom:16px}
        .section-sub{font-size:1.08rem;color:var(--text-light);max-width:680px}

        .site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.88);backdrop-filter:blur(18px) saturate(180%);
            border-bottom:1px solid var(--border);transition:box-shadow .3s}
        .site-header.scrolled{box-shadow:var(--shadow-md)}
        .header-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;max-width:1420px;
            margin:0 auto;padding:0 32px;height:80px}
        .nav-links{display:flex;align-items:center;gap:4px}
        .nav-links.left{justify-content:flex-start}
        .nav-links.right{justify-content:flex-end}
        .nav-link{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem 1.15rem;border-radius:999px;
            font-size:.92rem;font-weight:600;color:var(--text-light);transition:var(--transition)}
        .nav-link:hover{color:var(--primary);background:var(--primary-bg)}
        .nav-link.active{background:var(--primary);color:#fff;box-shadow:var(--shadow-primary)}
        .brand-logo{display:inline-flex;align-items:center;gap:.6rem;font-size:1.15rem;font-weight:800;color:var(--dark);
            letter-spacing:-.01em;padding:.4rem .6rem;border-radius:12px;transition:var(--transition);white-space:nowrap}
        .brand-logo:hover{color:var(--primary)}
        .brand-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--primary-light));
            color:#fff;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;font-size:1.1rem;
            box-shadow:var(--shadow-primary)}
        .mobile-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--primary-bg);
            color:var(--primary);font-size:1.15rem;align-items:center;justify-content:center;transition:var(--transition)}
        .mobile-toggle:hover{background:var(--primary);color:#fff}
        .mobile-menu{display:none;flex-direction:column;padding:12px 24px 20px;background:#fff;border-bottom:1px solid var(--border)}
        .mobile-menu .nav-link{padding:13px 16px;border-radius:var(--radius-md);font-size:1rem}
        .mobile-menu.open{display:flex}

        .hero{position:relative;min-height:720px;display:flex;align-items:center;overflow:hidden;
            background:linear-gradient(135deg,rgba(15,23,42,.92),rgba(30,27,75,.78)),url('/assets/images/backpic/back-1.png') center/cover no-repeat}
        .hero::after{content:'';position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 20%,rgba(99,102,241,.15),transparent 60%)}
        .hero-inner{position:relative;z-index:2;padding:80px 0;max-width:760px}
        .hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.15);
            border:1px solid rgba(255,255,255,.25);color:#fff;backdrop-filter:blur(10px);padding:.5rem 1.1rem;
            border-radius:999px;font-size:.82rem;font-weight:600;letter-spacing:.05em;margin-bottom:28px}
        .hero-badge i{color:var(--accent)}
        .hero-title{font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:900;color:#fff;line-height:1.12;letter-spacing:-.02em;margin-bottom:24px}
        .hero-title span{background:linear-gradient(135deg,var(--accent),#fbbf24);-webkit-background-clip:text;background-clip:text;color:transparent}
        .hero-sub{font-size:clamp(1.05rem,2vw,1.25rem);color:rgba(255,255,255,.85);line-height:1.8;margin-bottom:40px;max-width:600px}
        .hero-actions{display:flex;flex-wrap:wrap;gap:16px}
        .hero-stats{display:flex;gap:0;margin-top:64px;border-top:1px solid rgba(255,255,255,.2);padding-top:32px}
        .hero-stat{flex:1;text-align:center}
        .hero-stat+.hero-stat{border-left:1px solid rgba(255,255,255,.15)}
        .hero-stat b{display:block;font-size:2rem;font-weight:800;color:#fff}
        .hero-stat span{font-size:.85rem;color:rgba(255,255,255,.7)}

        .about-section{background:var(--white);border-bottom:1px solid var(--border)}
        .about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center}
        .about-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
        .about-media img{width:100%;height:420px;object-fit:cover;transition:transform .6s cubic-bezier(.4,0,.2,1)}
        .about-media:hover img{transform:scale(1.04)}
        .about-media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(15,23,42,.4))}
        .about-media-caption{position:absolute;bottom:20px;left:20px;right:20px;z-index:2;color:#fff;font-weight:600;font-size:.9rem;text-shadow:0 2px 8px rgba(0,0,0,.4)}
        .about-content h3{font-size:1.08rem;color:var(--primary);font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:.1em}
        .about-content p{color:var(--text-light);margin-bottom:20px;line-height:1.9}
        .about-points{display:flex;flex-direction:column;gap:16px;margin-top:28px}
        .about-point{display:flex;gap:14px;align-items:flex-start}
        .about-point i{width:38px;height:38px;flex-shrink:0;background:var(--primary-bg);color:var(--primary);
            border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:1rem}
        .about-point div b{display:block;font-size:1rem;color:var(--dark);margin-bottom:4px}
        .about-point div span{font-size:.9rem;color:var(--text-light)}

        .features-section{background:var(--bg)}
        .feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .feature-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);
            padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden}
        .feature-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--primary-light));transform:scaleX(0);transform-origin:left;transition:transform .4s}
        .feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--border-dark)}
        .feature-card:hover::before{transform:scaleX(1)}
        .feature-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:22px;box-shadow:var(--shadow-primary)}
        .feature-card:nth-child(2n) .feature-icon{background:linear-gradient(135deg,var(--accent),#fbbf24);box-shadow:0 8px 30px rgba(245,158,11,.3)}
        .feature-card h3{font-size:1.15rem;font-weight:700;color:var(--dark);margin-bottom:12px}
        .feature-card p{font-size:.92rem;color:var(--text-light);line-height:1.7}

        .category-section{background:linear-gradient(135deg,#f5f3ff,#eef2ff)}
        .category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .category-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);position:relative;box-shadow:var(--shadow-sm)}
        .category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
        .category-media{position:relative;height:220px;overflow:hidden}
        .category-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s}
        .category-card:hover .category-media img{transform:scale(1.08)}
        .category-media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,23,42,.65))}
        .category-tag{position:absolute;top:16px;right:16px;z-index:2}
        .category-body{padding:24px}
        .category-body h3{font-size:1.2rem;font-weight:800;color:var(--dark);margin-bottom:8px}
        .category-body p{font-size:.92rem;color:var(--text-light);margin-bottom:16px;line-height:1.7}
        .category-meta{display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--text-muted)}
        .category-meta a{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:.3rem}

        .news-section{background:var(--white);border-top:1px solid var(--border)}
        .news-layout{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start}
        .news-list{display:flex;flex-direction:column}
        .news-item{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--border);transition:var(--transition)}
        .news-item:first-child{padding-top:0}
        .news-item:last-child{border-bottom:none;padding-bottom:0}
        .news-item:hover .news-title{color:var(--primary)}
        .news-date-box{flex-shrink:0;width:64px;height:64px;background:var(--primary-bg);border-radius:var(--radius-md);
            display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--primary);font-weight:700;font-size:1.1rem;line-height:1.2}
        .news-date-box span{font-size:.72rem;font-weight:600;text-transform:uppercase;opacity:.8}
        .news-body{flex:1}
        .news-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
        .news-title{font-size:1.16rem;font-weight:700;color:var(--dark);margin-bottom:6px;transition:color .3s;line-height:1.45}
        .news-summary{font-size:.92rem;color:var(--text-light);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .read-more{display:inline-flex;align-items:center;gap:.3rem;margin-top:10px;font-size:.88rem;font-weight:600;color:var(--primary)}
        .read-more i{transition:transform .3s}
        .news-item:hover .read-more i{transform:translateX(5px)}
        .news-sidebar{position:sticky;top:100px}
        .sidebar-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;margin-bottom:24px}
        .sidebar-card h4{font-size:1rem;font-weight:800;color:var(--dark);margin-bottom:16px;display:flex;align-items:center;gap:.5rem}
        .sidebar-list{list-style:none}
        .sidebar-list li{margin-bottom:10px}
        .sidebar-list a{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;color:var(--text-light);padding:6px 0;transition:color .3s}
        .sidebar-list a:hover{color:var(--primary)}
        .sidebar-list span{color:var(--text-muted);font-size:.8rem}
        .empty-tip{background:var(--bg);border:1px dashed var(--border-dark);border-radius:var(--radius-md);padding:40px;text-align:center;color:var(--text-light)}

        .stats-section{position:relative;background:linear-gradient(135deg,var(--dark),#1e1b4b);padding:72px 0;overflow:hidden}
        .stats-section::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(99,102,241,.2),transparent 60%)}
        .stats-section::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(245,158,11,.1),transparent 60%)}
        .stats-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
        .stat-item{border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:36px 20px;background:rgba(255,255,255,.05);backdrop-filter:blur(8px)}
        .stat-item i{font-size:2rem;color:var(--accent);margin-bottom:12px;display:block}
        .stat-item b{display:block;font-size:2.6rem;font-weight:900;color:#fff;letter-spacing:-.02em}
        .stat-item span{font-size:.9rem;color:rgba(255,255,255,.65)}

        .showcase-section{background:var(--white);border-top:1px solid var(--border)}
        .showcase-block{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:88px}
        .showcase-block:last-child{margin-bottom:0}
        .showcase-block.reverse .showcase-media{order:2}
        .showcase-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);min-height:340px}
        .showcase-media img{width:100%;height:100%;object-fit:cover;min-height:340px;transition:transform .7s}
        .showcase-media:hover img{transform:scale(1.04)}
        .showcase-content h3{font-size:1.9rem;font-weight:800;color:var(--dark);margin-bottom:14px;line-height:1.3}
        .showcase-content p{color:var(--text-light);margin-bottom:20px;line-height:1.85}
        .showcase-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
        .showcase-quote{border-left:4px solid var(--primary);background:var(--primary-bg);padding:20px 24px;border-radius:0 12px 12px 0;font-style:italic;color:var(--text);margin:20px 0}

        .faq-section{background:var(--bg)}
        .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
        .faq-list{display:flex;flex-direction:column;gap:0}
        .faq-item{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--white);overflow:hidden;transition:var(--transition);margin-bottom:16px}
        .faq-item summary{display:flex;justify-content:space-between; align-items:center;gap:.5rem;padding:22px 24px;color:var(--dark);font-size:1rem;font-weight:600;cursor:pointer;list-style:none;transition:background .3s}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary i{color:var(--primary);font-size:1.2rem;transition:transform .4s;flex-shrink:0}
        .faq-item[open] summary{background:var(--primary-bg)}
        .faq-item[open] summary i{transform:rotate(180deg)}
        .faq-item .faq-body{padding:0 24px 22px;color:var(--text-light);font-size:.95rem;line-height:1.85}

        .cta-section{position:relative;background:linear-gradient(135deg,rgba(67,56,202,.95),rgba(49,46,129,.95)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;padding:96px 0;text-align:center;overflow:hidden}
        .cta-section h2{font-size:clamp(1.9rem,3.5vw,2.6rem);font-weight:800;color:#fff;margin-bottom:16px}
        .cta-section p{color:rgba(255,255,255,.8);max-width:600px;margin:0 auto 36px;font-size:1.1rem}
        .cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

        .site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:72px 0 28px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:28px}
        .footer-brand .brand-logo{color:#fff;margin-bottom:16px}
        .footer-brand p{font-size:.92rem;line-height:1.8}
        .footer-title{font-size:.95rem;font-weight:700;color:#fff;margin-bottom:20px}
        .footer-links{list-style:none}
        .footer-links li{margin-bottom:10px}
        .footer-links a{color:rgba(255,255,255,.65);font-size:.9rem;transition:color .3s}
        .footer-links a:hover{color:var(--accent)}
        .footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:.85rem}
        .footer-bottom a{color:rgba(255,255,255,.5);transition:color .3s}
        .footer-bottom a:hover{color:var(--accent)}
        .footer-social{display:flex;gap:10px}
        .footer-social a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.08);display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;color:rgba(255,255,255,.6);transition:var(--transition)}
        .footer-social a:hover{background:var(--accent);color:#fff;transform:translateY(-3px)}

        @media(max-width:1024px){
            .container{padding:0 20px}
            .feature-grid{grid-template-columns:repeat(2,1fr)}
            .category-grid{grid-template-columns:repeat(2,1fr)}
            .news-layout{grid-template-columns:1fr}
            .news-sidebar{position:static}
            .about-grid{grid-template-columns:1fr} 
            .showcase-block{grid-template-columns:1fr;gap:32px}
            .showcase-block.reverse .showcase-media{order:0}
            .faq-grid{grid-template-columns:1fr}
            .footer-grid{grid-template-columns:1fr 1fr}
            .section-pad{padding:72px 0}
            .hero{min-height:640px}
        }
        @media(max-width:768px){
            .header-grid{grid-template-columns:auto 1fr auto;height:72px;padding:0 16px}
            .nav-links{display:none}
            .mobile-toggle{display:inline-flex}
            .nav-links.left,.nav-links.right{display:none}
            .header-grid{grid-template-columns:1fr auto}
            .brand-logo{justify-content:center}
            .brand-logo .brand-icon{width:36px;height:36px;font-size:.95rem}
            .brand-logo span.brand-text{font-size:1rem}
            .hero{padding:64px 0;min-height:auto}
            .hero-stats{flex-wrap:wrap;gap:16px}
            .hero-stat{flex:1 1 45%;border-left:none!important}
            .feature-grid{grid-template-columns:1fr}
            .category-grid{grid-template-columns:1fr}
            .stats-grid{grid-template-columns:1fr 1fr}
            .footer-grid{grid-template-columns:1fr;gap:32px}
            .section-pad{padding:60px 0}
            .about-media img{height:300px}
            .btn-lg{padding:.9rem 2rem}
        }
        @media(max-width:520px){
            .container{padding:0 16px}
            .hero-title{font-size:2rem}
            .hero-sub{font-size:1rem}
            .hero-actions{flex-direction:column;width:100%}
            .hero-actions .btn{width:100%}
            .stats-grid{grid-template-columns:1fr}
            .section-title{font-size:1.7rem}
            .news-item{flex-direction:column;padding:20px 0;gap:14px}
            .news-date-box{width:auto;flex-direction:row;height:auto;padding:6px 14px}
            .news-date-box span{margin-left:6px}
            .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a4b8c;
            --primary-dark: #0f3159;
            --primary-light: #3b7bc9;
            --accent: #e8a33d;
            --accent-dark: #c9862b;
            --bg: #f6f8fc;
            --bg-light: #ffffff;
            --bg-deep: #0e2a4a;
            --text: #1f2d3d;
            --text-light: #5b6b7c;
            --text-lighter: #8a9bab;
            --border: #e3e9f2;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 10px rgba(15, 49, 89, 0.07);
            --shadow-md: 0 6px 22px rgba(15, 49, 89, 0.10);
            --shadow-lg: 0 14px 40px rgba(15, 49, 89, 0.14);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 76px;
        }

        /* ===== 基础 reset ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

        a:hover {
            color: var(--primary-light);
        }

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

        ul, ol {
            list-style: none;
        }

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5em;
        }

        p {
            margin-bottom: 1rem;
        }

        section {
            position: relative;
        }

        /* ===== 通用容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 14px rgba(15, 49, 89, 0.05);
        }

        .header-inner {
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            white-space: nowrap;
            transition: opacity var(--transition), transform var(--transition);
        }

        .brand-logo:hover {
            color: var(--primary-dark);
            opacity: 0.88;
            transform: translateX(-50%) scale(1.02);
        }

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #ffffff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(26, 75, 140, 0.25);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 2;
        }

        .nav-links.left {
            margin-right: auto;
        }

        .nav-links.right {
            margin-left: auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .nav-link i {
            font-size: 14px;
            color: var(--text-lighter);
            transition: color var(--transition);
        }

        .nav-link:hover {
            background: rgba(26, 75, 140, 0.08);
            color: var(--primary);
        }

        .nav-link:hover i {
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(26, 75, 140, 0.3);
        }

        .nav-link.active i {
            color: #ffffff;
        }

        .mobile-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: all var(--transition);
            z-index: 1001;
        }

        .mobile-toggle:hover {
            background: rgba(26, 75, 140, 0.08);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 120px 0 90px;
            background: linear-gradient(120deg, rgba(15, 49, 89, 0.88) 0%, rgba(26, 75, 140, 0.76) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #ffffff;
            text-align: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(232, 163, 61, 0.25) 0%, transparent 55%);
            pointer-events: none;
        }

        .page-hero .hero-inner {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 999px;
            padding: 7px 22px;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
            letter-spacing: 0.6px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 18px;
            text-shadow: 0 3px 18px rgba(0, 0, 0, 0.2);
        }

        .page-hero .hero-subtitle {
            max-width: 640px;
            margin: 0 auto 32px;
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 36px;
        }

        .hero-tags .tag {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(6px);
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(6px);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb i {
            font-size: 10px;
            margin: 0 2px;
            opacity: 0.6;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 96px 0;
        }

        .section-padding-sm {
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-header .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2.5px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--text-lighter);
            margin-top: 8px;
        }

        /* ===== 图文概览 ===== */
        .overview-section {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .overview-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .overview-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            display: block;
            transition: transform 0.8s ease;
        }

        .overview-media:hover img {
            transform: scale(1.04);
        }

        .overview-media::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 35%;
            background: linear-gradient(to top, rgba(15, 49, 89, 0.45), transparent);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .overview-content h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.4;
        }

        .overview-content p {
            color: var(--text-light);
            font-size: 16px;
            margin-bottom: 26px;
        }

        .overview-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 28px;
        }

        .point-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all var(--transition);
        }

        .point-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .point-icon {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            border-radius: 10px;
            background: rgba(26, 75, 140, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .point-item span {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
        }

        /* ===== 教程卡片 ===== */
        .guide-card-section {
            background: var(--bg);
        }

        .guide-card {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(26, 75, 140, 0.25);
        }

        .guide-card-media {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .guide-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .guide-card:hover .guide-card-media img {
            transform: scale(1.08);
        }

        .guide-card-media::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to top, rgba(15, 49, 89, 0.25), transparent);
            opacity: 0;
            transition: opacity var(--transition);
            z-index: 1;
        }

        .guide-card:hover .guide-card-media::before {
            opacity: 1;
        }

        .guide-card-category {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .guide-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .guide-card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 18px;
        }

        .guide-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 6px;
            transition: gap var(--transition), color var(--transition);
        }

        .guide-card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        .guide-card-link:hover {
            color: var(--primary-dark);
            gap: 12px;
        }

        .guide-card-link:hover i {
            transform: translateX(3px);
        }

        /* ===== 使用流程 ===== */
        .process-section {
            background: var(--bg-deep);
            color: #ffffff;
            overflow: hidden;
        }

        .process-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 75, 140, 0.4) 0%, transparent 60%), radial-gradient(ellipse at bottom right, rgba(232, 163, 61, 0.2) 0%, transparent 50%);
            pointer-events: none;
        }

        .process-section .section-header h2 {
            color: #ffffff;
        }

        .process-section .section-header .section-desc {
            color: rgba(255, 255, 255, 0.75);
        }

        .process-steps {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 10px;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
            position: relative;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.2);
        }

        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #ffffff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 6px 20px rgba(232, 163, 61, 0.4);
        }

        .process-step h3 {
            color: #ffffff;
            font-size: 18px;
            margin-bottom: 10px;
        }

        .process-step p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }

        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-wrap .accordion {
            background: transparent;
            border: none;
            margin-top: 0;
        }

        .faq-wrap .accordion-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-wrap .accordion-item.is-active {
            border-color: rgba(26, 75, 140, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-wrap .accordion-title {
            background: transparent;
            border-bottom: 1px solid transparent;
            padding: 20px 52px 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            position: relative;
            transition: color var(--transition);
        }

        .faq-wrap .accordion-title:hover,
        .faq-wrap .accordion-item.is-active .accordion-title {
            background: rgba(26, 75, 140, 0.04);
            color: var(--primary);
        }

        .faq-wrap .accordion-title::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 18px;
            color: var(--primary);
        }

        .faq-wrap .accordion-content {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 18px 24px;
            line-height: 1.8;
            color: var(--text-light);
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(232, 163, 61, 0.15);
            pointer-events: none;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #ffffff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 30px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-white {
            background: #ffffff;
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-white:hover {
            background: var(--accent);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(0, 0, 0, 0.2);
        }

        .btn-outline-white {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            color: #ffffff;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 0;
            border-top: 3px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .brand-logo {
            position: static;
            transform: none;
            margin-bottom: 18px;
            color: #ffffff;
        }

        .footer-brand .brand-logo:hover {
            transform: scale(1.02);
            color: #ffffff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 350px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: all var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            margin: 0;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
        }

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

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

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ===== 按钮通用 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            background: var(--primary);
            color: #ffffff;
            border-radius: 999px;
            border: none;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(26, 75, 140, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 49, 89, 0.35);
        }

        .btn-primary i {
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --header-height: 68px;
            }

            .overview-grid {
                gap: 40px;
            }

            .process-steps {
                gap: 20px;
            }

            .container {
                padding: 0 28px;
            }

            .section-padding {
                padding: 80px 0;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            .site-header {
                height: var(--header-height);
            }

            .nav-links {
                display: none;
            }

            .nav-links.open {
                display: flex;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 16px 24px;
                gap: 6px;
                box-shadow: 0 12px 32px rgba(15, 49, 89, 0.18);
                border-bottom: 1px solid var(--border);
                z-index: 1000;
                align-items: stretch;
            }

            .nav-links.open .nav-link {
                width: 100%;
                justify-content: center;
                padding: 14px;
                border-radius: 10px;
                font-size: 15px;
            }

            .brand-logo {
                position: static;
                transform: none;
                margin-right: auto;
                margin-left: 12px;
                font-size: 17px;
            }

            .brand-logo:hover {
                transform: none;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .header-inner {
                position: relative;
            }

            .mobile-toggle {
                display: flex;
                margin-left: auto;
                order: 3;
            }

            .page-hero {
                padding: 90px 0 70px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero .hero-subtitle {
                font-size: 15px;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .overview-media img {
                height: 300px;
            }

            .overview-points {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr 1fr;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand-logo {
                font-size: 15px;
            }

            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 14px;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .section-padding {
                padding: 60px 0;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .guide-card-media {
                height: 160px;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (max-width: 396px) {
            .brand-logo .brand-text {
                font-size: 13px;
            }

            .mobile-toggle {
                width: 38px;
                height: 38px;
            }
        }

        /* ===== 焦点访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(232, 163, 61, 0.6);
            outline-offset: 2px;
        }

        /* ===== 动画效果 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-inner {
            animation: fadeUp 0.8s ease both;
        }

/* roulang page: article */
:root {
    --primary: #1D2B64;
    --primary-2: #2C3E8F;
    --accent: #D4A036;
    --accent-2: #E8B54D;
    --accent-soft: #FDF6E9;
    --ink: #1D2440;
    --muted: #67708F;
    --bg: #F4F6FB;
    --white: #FFFFFF;
    --line: #E4E8F3;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 10px rgba(29,36,64,.05);
    --shadow-md: 0 12px 32px rgba(29,36,64,.08);
    --shadow-lg: 0 24px 60px rgba(29,36,64,.12);
    --transition: all .28s cubic-bezier(.4,0,.2,1);
    --font-body: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); background: var(--bg); color: var(--ink); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-2); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
.grid-container { max-width: 1200px; }

/* ===== 顶部导航 ===== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    height: 76px;
}
.header-inner {
    height: 76px;
    display: flex; align-items: center; justify-content: center;
    position: relative;
}
.nav-links { display: flex; align-items: center; gap: 4px; z-index: 2; }
.nav-links.left { position: absolute; left: 0; top: 50%; transform: translateY(-50%); }
.nav-links.right { position: absolute; right: 0; top: 50%; transform: translateY(-50%); }
.nav-link {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px; border-radius: 999px;
    font-weight: 600; color: var(--ink);
    font-size: 15px; line-height: 1.4;
}
.nav-link i { font-size: 14px; color: var(--muted); }
.nav-link:hover { background: var(--bg); color: var(--primary-2); }
.nav-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(29,43,100,.22); }
.nav-link.active i { color: #fff; }
.brand-logo {
    display: inline-flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 22px; color: var(--ink); white-space: nowrap;
    z-index: 2;
}
.brand-icon {
    width: 42px; height: 42px; border-radius: 13px;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; flex-shrink: 0;
    box-shadow: 0 8px 22px rgba(29,43,100,.28);
}
.brand-logo:hover { color: var(--ink); }
.mobile-toggle {
    display: none;
    background: none; border: none; font-size: 22px; color: var(--ink);
    cursor: pointer; padding: 8px; border-radius: 8px;
}
.mobile-toggle:focus-visible { outline: 2px solid var(--accent); }
.mobile-nav {
    display: none;
    position: fixed; top: 76px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md); z-index: 99;
    padding: 16px 24px 24px;
}
.mobile-nav.open { display: block; animation: slideDown .25s ease; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
.mobile-nav .nav-link { display: flex; width: 100%; padding: 14px 16px; border-radius: 10px; font-size: 16px; }
.mobile-nav .nav-link + .nav-link { margin-top: 4px; }
.mobile-nav .nav-link.active { background: var(--primary); }

/* ===== 文章 Banner ===== */
.article-banner {
    position: relative;
    padding: 70px 0 60px;
    background: linear-gradient(135deg, rgba(29,43,100,.94), rgba(44,62,143,.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff;
    overflow: hidden;
}
.article-banner::after {
    content: '';
    position: absolute; bottom: -1px; left: 0; right: 0; height: 40px;
    background: var(--bg);
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    opacity: .35;
}
.breadcrumb { font-size: 14px; color: rgba(255,255,255,.72); margin-bottom: 22px; display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.breadcrumb a { color: rgba(255,255,255,.88); }
.breadcrumb a:hover { color: var(--accent-2); }
.breadcrumb i { font-size: 10px; margin: 0 6px; color: rgba(255,255,255,.5); }
.badge-category {
    display: inline-block;
    background: var(--accent); color: #1D2B64;
    font-size: 13px; font-weight: 700; letter-spacing: .5px;
    padding: 5px 18px; border-radius: 999px;
    box-shadow: 0 6px 16px rgba(212,160,54,.35);
    margin-bottom: 18px;
}
.article-title {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.28; font-weight: 800; color: #fff;
    margin-bottom: 18px; max-width: 860px;
    text-wrap: balance;
}
.article-meta {
    display: flex; flex-wrap: wrap; gap: 18px;
    color: rgba(255,255,255,.85); font-size: 14px; margin-top: 4px;
}
.article-meta i { color: var(--accent-2); margin-right: 7px; font-size: 13px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; position: relative; z-index: 2; }
.tag-btn {
    display: inline-flex; align-items: center; gap: 5px;
    background: rgba(255,255,255,.12);
    color: #fff; padding: 6px 15px; border-radius: 999px;
    font-size: 13px; font-weight: 500;
    border: 1px solid rgba(255,255,255,.2);
    backdrop-filter: blur(4px);
    transition: var(--transition);
}
.tag-btn:hover { background: var(--accent); color: #1D2B64; border-color: transparent; }

/* ===== 正文板块 ===== */
.article-section { padding: 56px 0 30px; }
.article-wrap { gap: 32px; }
.article-main {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: clamp(24px, 4vw, 48px);
    border: 1px solid rgba(228,232,243,.6);
}
.article-body { font-size: 16.5px; line-height: 1.9; color: #333; }
.article-body p { margin-bottom: 1.4em; }
.article-body h2 { font-size: 1.55em; font-weight: 800; color: var(--ink); margin: 1.8em 0 .7em; line-height: 1.4; }
.article-body h3 { font-size: 1.28em; font-weight: 700; color: var(--ink); margin: 1.6em 0 .6em; line-height: 1.45; }
.article-body h4 { font-size: 1.08em; font-weight: 700; color: var(--ink); margin: 1.4em 0 .5em; }
.article-body ul, .article-body ol { margin: 1em 0 1.5em; padding-left: 1.5em; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: .45em; }
.article-body a { color: var(--primary-2); border-bottom: 1px solid rgba(44,62,143,.25); }
.article-body a:hover { color: var(--accent); border-color: var(--accent); }
.article-body img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); width: auto; }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--accent-soft);
    padding: 18px 24px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.6em 0;
    color: var(--muted);
    font-style: normal;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 15px; }
.article-body table th, .article-body table td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.article-body table th { background: var(--bg); font-weight: 700; color: var(--ink); }
.article-body code { background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 2px 8px; font-size: .9em; }
.article-body pre { background: #111827; color: #E5E7EB; border-radius: var(--radius-sm); padding: 20px; overflow-x: auto; margin: 1.5em 0; }
.article-body pre code { background: none; border: none; color: inherit; padding: 0; }

/* 文章底部标签 + 分享 */
.article-footer-bar {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: 16px; margin-top: 40px; padding-top: 26px;
    border-top: 1px solid var(--line);
}
.article-footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.foot-tag {
    display: inline-flex; align-items: center; gap: 5px;
    background: var(--bg); border: 1px solid var(--line);
    color: var(--muted); font-size: 13px; font-weight: 600;
    padding: 5px 14px; border-radius: 999px;
    transition: var(--transition);
}
.foot-tag:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.share-box { display: flex; align-items: center; gap: 10px; }
.share-box span { font-size: 13px; color: var(--muted); font-weight: 600; margin-right: 2px; }
.share-btn {
    width: 38px; height: 38px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--bg); border: 1px solid var(--line);
    color: var(--muted); font-size: 15px;
    transition: var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
.share-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* 内容未找到 */
.not-found {
    text-align: center; padding: 90px 30px;
}
.not-found i { font-size: 52px; color: #CBD0E0; }
.not-found .nf-title { font-size: 24px; font-weight: 800; color: var(--ink); margin: 22px 0 8px; }
.not-found .nf-desc { color: var(--muted); margin-bottom: 26px; }
.btn-back {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--primary); color: #fff;
    padding: 12px 30px; border-radius: 999px;
    font-weight: 700; font-size: 15px;
    box-shadow: 0 8px 22px rgba(29,43,100,.25);
    transition: var(--transition);
}
.btn-back:hover { background: var(--primary-2); color: #fff; transform: translateY(-2px); }

/* ===== 侧边栏 ===== */
.article-side { display: flex; flex-direction: column; gap: 24px; }
.side-card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 26px;
    border: 1px solid rgba(228,232,243,.7);
    transition: var(--transition);
}
.side-card:hover { box-shadow: var(--shadow-md); }
.side-title {
    font-size: 17px; font-weight: 800; color: var(--ink);
    margin-bottom: 18px; display: flex; align-items: center; gap: 10px;
}
.side-title::before {
    content: ''; width: 4px; height: 20px; border-radius: 4px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
}
.side-card .about-text { color: var(--muted); font-size: 14px; line-height: 1.85; margin-bottom: 16px; }
.side-about-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--accent-soft); color: var(--accent);
    display: flex; align-items: center; justify-content: center; font-size: 20px;
    margin-bottom: 14px;
}
.side-list li + li { border-top: 1px solid var(--line); }
.side-list a {
    display: flex; align-items: center; gap: 10px;
    padding: 11px 4px; color: var(--ink); font-size: 14.5px; font-weight: 500;
}
.side-list a i { color: var(--accent); font-size: 12px; }
.side-list a:hover { color: var(--primary-2); padding-left: 10px; }
.side-cta {
    background: linear-gradient(135deg, #1D2B64, #2C3E8F);
    color: #fff; border: none; overflow: hidden; position: relative;
}
.side-cta::after {
    content: ''; position: absolute; right: -40px; top: -40px;
    width: 120px; height: 120px; border-radius: 50%;
    background: rgba(212,160,54,.2);
}
.side-cta .side-title { color: #fff; }
.side-cta .side-title::before { background: var(--accent-2); }
.side-cta p { color: rgba(255,255,255,.82); font-size: 14px; margin-bottom: 20px; position: relative; z-index: 2; }
.btn-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent); color: #1D2B64;
    padding: 12px 26px; border-radius: 999px;
    font-weight: 700; font-size: 14px;
    box-shadow: 0 8px 22px rgba(212,160,54,.35);
    transition: var(--transition);
    position: relative; z-index: 2;
}
.btn-cta:hover { background: var(--accent-2); color: #1D2B64; transform: translateY(-2px); }

/* ===== 相关推荐 ===== */
.related-section { padding: 50px 0 20px; }
.section-head { margin-bottom: 30px; }
.section-head .section-eyebrow {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--accent); font-size: 13px; font-weight: 700;
    letter-spacing: 1.5px; text-transform: uppercase;
    margin-bottom: 8px;
}
.section-head h2 { font-size: clamp(24px,3vw,32px); font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.section-head p { color: var(--muted); font-size: 15px; }
.related-card {
    display: block;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
    overflow: hidden;
    height: 100%;
    transition: var(--transition);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.related-card .related-img { height: 190px; overflow: hidden; position: relative; }
.related-card .related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-img img { transform: scale(1.06); }
.related-img::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(29,36,64,.35));
    opacity: .6; transition: var(--transition);
}
.related-card:hover .related-img::after { opacity: .3; }
.related-body { padding: 20px; }
.related-cat {
    display: inline-block;
    background: var(--accent-soft); color: var(--accent);
    font-size: 12px; font-weight: 700; letter-spacing: .4px;
    padding: 3px 12px; border-radius: 999px; margin-bottom: 10px;
}
.related-body h3 {
    font-size: 15.5px; font-weight: 700; line-height: 1.55;
    color: var(--ink); margin-bottom: 10px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    min-height: 48px;
}
.related-date { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.related-date i { color: var(--accent); font-size: 12px; }

/* ===== FAQ ===== */
.faq-section { padding: 56px 0 20px; }
.faq-list { max-width: 900px; margin: 0 auto; }
.faq-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.faq-card:hover { box-shadow: var(--shadow-md); }
.faq-q {
    width: 100%;
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 26px; font-weight: 700; font-size: 16px;
    color: var(--ink); background: none; border: none; text-align: left;
    cursor: pointer; transition: var(--transition);
}
.faq-q:hover { color: var(--primary-2); }
.faq-q i { color: var(--accent); font-size: 14px; transition: transform .3s ease; flex-shrink: 0; margin-left: 14px; }
.faq-card.open .faq-q i { transform: rotate(180deg); }
.faq-a {
    padding: 0 26px; max-height: 0; overflow: hidden;
    color: var(--muted); font-size: 15px; line-height: 1.85;
    transition: max-height .35s ease, padding .35s ease;
}
.faq-card.open .faq-a { padding: 0 26px 22px; max-height: 300px; }

/* ===== CTA ===== */
.cta-section { padding: 40px 0 70px; }
.cta-box {
    background: linear-gradient(135deg, #1D2B64 0%, #2C3E8F 60%, #35499F 100%);
    border-radius: var(--radius-lg);
    padding: clamp(36px, 5vw, 60px) clamp(28px, 4vw, 70px);
    text-align: center; color: #fff;
    position: relative; overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.cta-box::before {
    content: ''; position: absolute; left: -80px; top: -80px;
    width: 260px; height: 260px; border-radius: 50%;
    background: rgba(212,160,54,.14);
}
.cta-box::after {
    content: ''; position: absolute; right: -60px; bottom: -100px;
    width: 300px; height: 300px; border-radius: 50%;
    background: rgba(255,255,255,.06);
}
.cta-box h2 { font-size: clamp(24px,3.5vw,36px); font-weight: 800; margin-bottom: 12px; position: relative; z-index: 2; }
.cta-box p { color: rgba(255,255,255,.85); font-size: 16px; max-width: 640px; margin: 0 auto 30px; position: relative; z-index: 2; }
.cta-btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; position: relative; z-index: 2; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent); color: #1D2B64;
    padding: 14px 34px; border-radius: 999px;
    font-weight: 700; font-size: 15px;
    box-shadow: 0 10px 28px rgba(212,160,54,.35);
    transition: var(--transition);
}
.btn-primary:hover { background: var(--accent-2); color: #1D2B64; transform: translateY(-2px); box-shadow: 0 16px 36px rgba(212,160,54,.45); }
.btn-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: #fff;
    padding: 14px 34px; border-radius: 999px;
    font-weight: 700; font-size: 15px;
    border: 2px solid rgba(255,255,255,.55);
    transition: var(--transition);
}
.btn-ghost:hover { background: rgba(255,255,255,.14); color: #fff; border-color: #fff; transform: translateY(-2px); }

/* ===== 页脚 ===== */
.site-footer {
    background: #141A2E;
    color: rgba(255,255,255,.7);
    padding: 64px 0 0;
    font-size: 14.5px;
}
.site-footer a { color: rgba(255,255,255,.72); }
.site-footer a:hover { color: var(--accent-2); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 44px;
}
.footer-brand p { margin-top: 16px; line-height: 1.85; max-width: 380px; color: rgba(255,255,255,.58); }
.site-footer .brand-logo { font-size: 20px; color: #fff; }
.site-footer .brand-icon {
    width: 38px; height: 38px; border-radius: 11px;
    font-size: 16px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #1D2B64;
    box-shadow: 0 6px 18px rgba(212,160,54,.3);
}
.footer-title {
    color: #fff; font-size: 16px; font-weight: 700;
    margin-bottom: 20px; position: relative; padding-bottom: 10px;
}
.footer-title::after {
    content: ''; position: absolute; left: 0; bottom: 0;
    width: 28px; height: 3px; border-radius: 3px;
    background: var(--accent);
}
.footer-links li + li { margin-top: 10px; }
.footer-links a { display: inline-flex; align-items: center; gap: 7px; transition: var(--transition); }
.footer-links a::before { content: '›'; color: var(--accent); font-weight: 700; }
.footer-links a:hover { padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.09);
    padding: 22px 0;
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px;
    font-size: 13px; color: rgba(255,255,255,.45);
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--accent-2); }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
    width: 36px; height: 36px; border-radius: 50%;
    border: 1px solid rgba(255,255,255,.16);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 14px; color: rgba(255,255,255,.6);
    transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); border-color: var(--accent); color: #1D2B64; }

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
    .nav-links.left .nav-link, .nav-links.right .nav-link { padding: 8px 14px; font-size: 14px; }
    .brand-logo { font-size: 19px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media screen and (max-width: 768px) {
    .site-header { height: 64px; }
    .header-inner { height: 64px; }
    .nav-links.left, .nav-links.right { display: none; }
    .brand-logo { position: static; transform: none; font-size: 18px; }
    .brand-icon { width: 36px; height: 36px; font-size: 15px; border-radius: 10px; }
    .mobile-toggle { display: inline-flex; align-items: center; justify-content: center; position: absolute; right: 0; }
    .mobile-nav { top: 64px; }
    .article-banner { padding: 48px 0 44px; }
    .article-title { font-size: 26px; }
    .article-meta { gap: 12px; font-size: 13px; }
    .article-section { padding: 38px 0 20px; }
    .article-main { padding: 22px 18px; }
    .article-side { flex-direction: row; flex-wrap: wrap; gap: 18px; }
    .article-side .side-card { flex: 1 1 100%; }
    .related-section { padding: 36px 0 10px; }
    .faq-section { padding: 40px 0 10px; }
    .cta-section { padding: 30px 0 50px; }
    .cta-box { padding: 36px 22px; }
    .cta-btns { flex-direction: column; align-items: center; }
    .cta-btns .btn-primary, .cta-btns .btn-ghost { width: 100%; justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 36px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .article-footer-bar { flex-direction: column; align-items: flex-start; }
    .share-box { width: 100%; }
    .article-body { font-size: 15.5px; }
}

@media screen and (max-width: 520px) {
    .brand-logo span:last-child { font-size: 16px; }
    .article-title { font-size: 23px; }
    .badge-category { font-size: 12px; padding: 4px 14px; }
    .article-meta { gap: 10px; font-size: 12px; flex-direction: column; }
    .article-meta span { display: flex; align-items: center; }
    .related-body h3 { font-size: 15px; }
    .faq-q { padding: 16px 18px; font-size: 15px; }
    .faq-a { padding: 0 18px; }
    .faq-card.open .faq-a { padding: 0 18px 18px; }
}