/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a5f;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.25s ease;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--bg-light);color:var(--text-dark);line-height:1.6;-webkit-font-smoothing:antialiased}
        a{color:inherit;text-decoration:none;transition:var(--transition)}
        img{max-width:100%;height:auto;display:block}
        button,input,textarea{font-family:inherit;transition:var(--transition)}
        .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
        @media (min-width:768px){.container{padding:0 32px}}
        @media (min-width:1024px){.container{padding:0 40px}}

        /* Header & Nav */
        .site-header{background:rgba(255,255,255,0.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 20px rgba(0,0,0,0.04)}
        .nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
        .logo{font-size:1.6rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap;letter-spacing:-0.5px}
        .nav-links{display:flex;align-items:center;gap:6px}
        .nav-links a{padding:8px 16px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-muted);transition:var(--transition);position:relative}
        .nav-links a:hover{color:var(--primary);background:rgba(30,64,175,0.06)}
        .nav-links a.active{color:var(--primary);background:rgba(30,64,175,0.08);font-weight:600}
        .nav-links a.active::after{content:'';position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:4px}
        .search-box{display:flex;align-items:center;background:var(--bg-light);border:1.5px solid var(--border);border-radius:50px;padding:0 8px 0 18px;height:44px;width:280px;transition:var(--transition)}
        .search-box:focus-within{border-color:var(--primary-light);box-shadow:0 0 0 4px rgba(59,130,246,0.12);background:var(--bg-white)}
        .search-box input{border:none;background:transparent;outline:none;flex:1;font-size:0.95rem;color:var(--text-dark);padding:8px 0}
        .search-box input::placeholder{color:var(--text-light)}
        .search-box button{background:var(--primary);color:#fff;border:none;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}
        .search-box button:hover{background:var(--primary-dark);transform:scale(1.04)}
        .mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--text-dark);cursor:pointer;padding:6px}
        @media (max-width:768px){
            .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--bg-white);border-bottom:1px solid var(--border);padding:12px 20px;flex-direction:column;gap:4px;box-shadow:var(--shadow-md)}
            .nav-links.open{display:flex}
            .nav-links a{width:100%;padding:12px 16px}
            .search-box{width:180px}
            .mobile-toggle{display:block}
        }
        @media (max-width:520px){
            .nav-inner{height:64px;gap:8px}
            .logo{font-size:1.3rem}
            .search-box{width:140px;padding:0 6px 0 12px;height:38px}
            .search-box input{font-size:0.85rem}
            .search-box button{width:30px;height:30px}
        }

        /* Hero */
        .hero{position:relative;min-height:620px;display:flex;align-items:center;overflow:hidden;background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 50%,#1e40af 100%)}
        .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;opacity:0.30;mix-blend-mode:overlay}
        .hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(30,58,95,0.88) 0%,rgba(30,64,175,0.72) 100%)}
        .hero-content{position:relative;z-index:2;width:100%;padding:80px 0;text-align:center}
        .hero-badge{display:inline-block;background:rgba(255,255,255,0.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.18);padding:6px 20px;border-radius:50px;font-size:0.85rem;font-weight:500;color:rgba(255,255,255,0.9);margin-bottom:24px;letter-spacing:0.4px}
        .hero h1{font-size:3.4rem;font-weight:800;color:#fff;line-height:1.2;margin-bottom:16px;letter-spacing:-1px}
        .hero h1 span{background:linear-gradient(135deg,var(--accent),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .hero p{font-size:1.2rem;color:rgba(255,255,255,0.8);max-width:620px;margin:0 auto 32px;line-height:1.7}
        .hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
        .hero-actions .btn-primary{background:var(--accent);color:var(--primary-dark);padding:14px 36px;border-radius:50px;font-weight:700;font-size:1.05rem;border:none;cursor:pointer;transition:var(--transition);box-shadow:0 8px 24px rgba(245,158,11,0.35)}
        .hero-actions .btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(245,158,11,0.45);background:var(--accent-light)}
        .hero-actions .btn-outline{background:rgba(255,255,255,0.10);backdrop-filter:blur(8px);border:1.5px solid rgba(255,255,255,0.25);color:#fff;padding:14px 36px;border-radius:50px;font-weight:600;font-size:1.05rem;cursor:pointer;transition:var(--transition)}
        .hero-actions .btn-outline:hover{background:rgba(255,255,255,0.20);border-color:rgba(255,255,255,0.40);transform:translateY(-2px)}
        .hero-search{margin-top:36px;max-width:520px;margin-left:auto;margin-right:auto;display:flex;background:rgba(255,255,255,0.12);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.18);border-radius:50px;padding:4px;transition:var(--transition)}
        .hero-search:focus-within{background:rgba(255,255,255,0.20);border-color:rgba(255,255,255,0.30)}
        .hero-search input{flex:1;background:transparent;border:none;outline:none;padding:14px 22px;font-size:1rem;color:#fff}
        .hero-search input::placeholder{color:rgba(255,255,255,0.55)}
        .hero-search button{background:var(--accent);border:none;color:var(--primary-dark);font-weight:700;padding:12px 28px;border-radius:50px;cursor:pointer;transition:var(--transition);font-size:0.95rem}
        .hero-search button:hover{background:var(--accent-light);transform:scale(1.02)}
        @media (max-width:768px){
            .hero{min-height:480px}
            .hero h1{font-size:2.2rem}
            .hero p{font-size:1rem}
            .hero-actions .btn-primary,.hero-actions .btn-outline{padding:12px 28px;font-size:0.95rem}
            .hero-search{flex-direction:column;border-radius:var(--radius-md);background:rgba(255,255,255,0.08)}
            .hero-search input{padding:12px 18px;text-align:center}
            .hero-search button{border-radius:var(--radius-sm);margin:4px;padding:12px}
        }
        @media (max-width:520px){
            .hero h1{font-size:1.7rem}
            .hero-badge{font-size:0.75rem;padding:4px 14px}
        }

        /* Section通用 */
        .section{padding:80px 0}
        .section-alt{background:var(--bg-white)}
        .section-title{text-align:center;margin-bottom:48px}
        .section-title h2{font-size:2.2rem;font-weight:700;color:var(--text-dark);margin-bottom:12px;letter-spacing:-0.5px}
        .section-title p{font-size:1.05rem;color:var(--text-muted);max-width:600px;margin:0 auto;line-height:1.7}
        .section-title .accent-line{width:48px;height:4px;background:var(--accent);border-radius:4px;margin:16px auto 0}
        @media (max-width:768px){
            .section{padding:56px 0}
            .section-title h2{font-size:1.7rem}
            .section-title p{font-size:0.95rem}
        }

        /* Features */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
        .feature-card{background:var(--bg-white);border-radius:var(--radius-md);padding:36px 28px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--transition);text-align:center}
        .feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(59,130,246,0.15)}
        .feature-icon{width:56px;height:56px;background:linear-gradient(135deg,rgba(30,64,175,0.08),rgba(59,130,246,0.06));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.6rem;color:var(--primary);transition:var(--transition)}
        .feature-card:hover .feature-icon{background:var(--primary);color:#fff}
        .feature-card h3{font-size:1.2rem;font-weight:600;margin-bottom:8px;color:var(--text-dark)}
        .feature-card p{font-size:0.95rem;color:var(--text-muted);line-height:1.7}
        @media (max-width:768px){
            .features-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:520px){
            .features-grid{grid-template-columns:1fr}
            .feature-card{padding:24px 20px}
        }

        /* Categories */
        .categories-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
        .category-card{position:relative;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);aspect-ratio:16/10;display:flex;align-items:flex-end;cursor:pointer}
        .category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
        .category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:var(--transition)}
        .category-card:hover img{transform:scale(1.05)}
        .category-card .overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,0.72) 0%,rgba(0,0,0,0.12) 60%,rgba(0,0,0,0) 100%)}
        .category-card .info{position:relative;z-index:2;padding:28px 24px;width:100%}
        .category-card .info h3{color:#fff;font-size:1.4rem;font-weight:700;margin-bottom:6px}
        .category-card .info p{color:rgba(255,255,255,0.80);font-size:0.9rem}
        .category-card .info .tag{display:inline-block;background:rgba(255,255,255,0.15);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,0.20);padding:2px 14px;border-radius:50px;font-size:0.75rem;color:#fff;margin-top:8px}
        @media (max-width:520px){
            .categories-grid{grid-template-columns:1fr}
            .category-card{aspect-ratio:16/9}
            .category-card .info{padding:20px 16px}
            .category-card .info h3{font-size:1.15rem}
        }

        /* Latest Posts */
        .posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .post-card{background:var(--bg-white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
        .post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(59,130,246,0.12)}
        .post-card .thumb{aspect-ratio:16/9;overflow:hidden;position:relative}
        .post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
        .post-card:hover .thumb img{transform:scale(1.05)}
        .post-card .thumb .cat-tag{position:absolute;top:12px;left:12px;background:rgba(30,64,175,0.85);backdrop-filter:blur(6px);color:#fff;font-size:0.7rem;font-weight:500;padding:3px 12px;border-radius:50px;letter-spacing:0.3px}
        .post-card .body{padding:20px 18px 22px;flex:1;display:flex;flex-direction:column}
        .post-card .body .meta{display:flex;align-items:center;gap:12px;font-size:0.8rem;color:var(--text-light);margin-bottom:8px}
        .post-card .body .meta i{margin-right:3px}
        .post-card .body h3{font-size:1.05rem;font-weight:600;color:var(--text-dark);margin-bottom:6px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .post-card .body p{font-size:0.88rem;color:var(--text-muted);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;flex:1}
        .post-card .body .read-more{color:var(--primary);font-size:0.85rem;font-weight:600;display:flex;align-items:center;gap:6px;transition:var(--transition)}
        .post-card .body .read-more:hover{color:var(--primary-light);gap:10px}
        .posts-empty{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--text-muted);font-size:1rem;background:var(--bg-white);border-radius:var(--radius-md);border:1px dashed var(--border)}
        .posts-empty i{font-size:2.4rem;color:var(--text-light);margin-bottom:12px;display:block}
        @media (max-width:768px){
            .posts-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:520px){
            .posts-grid{grid-template-columns:1fr}
            .post-card .body{padding:16px 14px 18px}
        }

        /* Stats */
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .stat-card{text-align:center;padding:32px 16px;background:var(--bg-white);border-radius:var(--radius-md);border:1px solid var(--border);transition:var(--transition)}
        .stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
        .stat-card .number{font-size:2.6rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2}
        .stat-card .label{font-size:0.9rem;color:var(--text-muted);margin-top:6px;font-weight:500}
        @media (max-width:768px){
            .stats-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media (max-width:520px){
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
            .stat-card{padding:20px 12px}
            .stat-card .number{font-size:2rem}
        }

        /* Steps / Flow */
        .steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;position:relative}
        .steps-grid::before{content:'';position:absolute;top:60px;left:15%;right:15%;height:2px;background:linear-gradient(to right,var(--primary),var(--accent));z-index:0;opacity:0.3}
        .step-card{text-align:center;position:relative;z-index:1;background:var(--bg-light);border-radius:var(--radius-md);padding:32px 20px;transition:var(--transition)}
        .step-card:hover{background:var(--bg-white);box-shadow:var(--shadow-md)}
        .step-num{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px;box-shadow:0 6px 20px rgba(30,64,175,0.25)}
        .step-card h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:var(--text-dark)}
        .step-card p{font-size:0.9rem;color:var(--text-muted);line-height:1.6}
        @media (max-width:768px){
            .steps-grid{grid-template-columns:1fr;gap:20px}
            .steps-grid::before{display:none}
            .step-card{padding:24px 16px}
        }

        /* FAQ */
        .faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
        .faq-item{background:var(--bg-white);border-radius:var(--radius-sm);border:1px solid var(--border);overflow:hidden;transition:var(--transition)}
        .faq-item:hover{border-color:rgba(59,130,246,0.15)}
        .faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-weight:600;font-size:1rem;color:var(--text-dark);background:none;border:none;width:100%;text-align:left;gap:12px;transition:var(--transition)}
        .faq-question:hover{color:var(--primary)}
        .faq-question i{color:var(--text-light);transition:var(--transition);font-size:0.9rem}
        .faq-item.active .faq-question i{transform:rotate(180deg);color:var(--primary)}
        .faq-answer{padding:0 22px 18px;font-size:0.92rem;color:var(--text-muted);line-height:1.7;display:none}
        .faq-item.active .faq-answer{display:block}
        .faq-item.active{border-color:rgba(59,130,246,0.20)}
        @media (max-width:520px){
            .faq-question{padding:14px 16px;font-size:0.92rem}
            .faq-answer{padding:0 16px 14px;font-size:0.88rem}
        }

        /* CTA */
        .cta-section{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);padding:72px 0;text-align:center;position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;opacity:0.12;mix-blend-mode:overlay}
        .cta-content{position:relative;z-index:2}
        .cta-content h2{font-size:2.2rem;font-weight:700;color:#fff;margin-bottom:12px}
        .cta-content p{font-size:1.05rem;color:rgba(255,255,255,0.80);max-width:560px;margin:0 auto 28px;line-height:1.7}
        .cta-content .btn-cta{background:var(--accent);color:var(--primary-dark);padding:16px 44px;border-radius:50px;font-weight:700;font-size:1.1rem;border:none;cursor:pointer;transition:var(--transition);box-shadow:0 8px 28px rgba(245,158,11,0.30);display:inline-block}
        .cta-content .btn-cta:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(245,158,11,0.40);background:var(--accent-light)}
        @media (max-width:768px){
            .cta-section{padding:52px 0}
            .cta-content h2{font-size:1.6rem}
            .cta-content p{font-size:0.95rem}
            .cta-content .btn-cta{padding:14px 32px;font-size:1rem}
        }

        /* Footer */
        .site-footer{background:var(--text-dark);color:rgba(255,255,255,0.80);padding:56px 0 32px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
        .footer-brand .logo-footer{font-size:1.5rem;font-weight:800;background:linear-gradient(135deg,#60a5fa,#93c5fd);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px;display:inline-block}
        .footer-brand p{font-size:0.92rem;color:rgba(255,255,255,0.55);line-height:1.7;max-width:300px}
        .footer-col h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:16px;position:relative;padding-bottom:10px}
        .footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--accent);border-radius:2px}
        .footer-col ul{list-style:none;padding:0}
        .footer-col ul li{margin-bottom:8px}
        .footer-col ul li a{color:rgba(255,255,255,0.55);font-size:0.9rem;transition:var(--transition)}
        .footer-col ul li a:hover{color:var(--accent-light);padding-left:4px}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:0.85rem;color:rgba(255,255,255,0.40)}
        .footer-bottom a{color:rgba(255,255,255,0.50);transition:var(--transition)}
        .footer-bottom a:hover{color:var(--accent-light)}
        @media (max-width:768px){
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
        }
        @media (max-width:520px){
            .footer-grid{grid-template-columns:1fr;gap:20px}
            .footer-bottom{flex-direction:column;text-align:center}
        }

        /* Back to top */
        .back-top{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--primary);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);transition:var(--transition);z-index:50;opacity:0;visibility:hidden;transform:translateY(12px)}
        .back-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
        .back-top:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --primary-dark: #0b1120;
            --accent: #3b82f6;
            --accent-light: #60a5fa;
            --accent-dark: #2563eb;
            --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-section-alt: #f1f5f9;
            --bg-dark: #0f172a;
            --text-primary: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.16);
            --spacing-section: 5rem;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 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: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        ul {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-primary);
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(59, 130, 246, 0.2);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        /* Search in nav */
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 100px;
            padding: 0 0.75rem 0 1rem;
            transition: var(--transition);
            max-width: 260px;
            width: 100%;
        }
        .nav-search:focus-within {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 0.5rem 0.5rem;
            color: #fff;
            font-size: 0.85rem;
            width: 100%;
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .nav-search button {
            color: rgba(255, 255, 255, 0.5);
            padding: 0.4rem 0.4rem;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 0.25rem;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem;
                gap: 0.25rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 0.75rem 1rem;
            }
            .nav-search {
                max-width: 100%;
                margin-left: 0.5rem;
            }
            .nav-toggle {
                display: block;
                margin-left: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 1.1rem;
            }
            .nav-search {
                max-width: 140px;
            }
            .nav-search input {
                font-size: 0.75rem;
            }
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding: 4rem 0 3.5rem;
        }
        .category-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: 0.3;
            mix-blend-mode: overlay;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(59, 130, 246, 0.2) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 60%, rgba(139, 92, 246, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
            line-height: 1.15;
        }
        .category-hero h1 span {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
        }
        .hero-tags span {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0.35rem 1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
                padding: 3rem 0 2.5rem;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero p {
                font-size: 0.85rem;
            }
            .hero-tags span {
                font-size: 0.7rem;
                padding: 0.25rem 0.75rem;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(59, 130, 246, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 100px;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.03em;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.55);
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 0.9rem;
                margin-bottom: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .section-title {
                font-size: 1.3rem;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.5rem;
        }
        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        @media (max-width: 1024px) {
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 1.5rem;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 1rem;
            background: var(--accent-gradient);
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.8rem;
        }
        .card .card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(59, 130, 246, 0.08);
            padding: 0.15rem 0.6rem;
            border-radius: 100px;
            margin-right: 0.3rem;
            margin-bottom: 0.3rem;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            margin-top: 0.5rem;
            transition: var(--transition);
        }
        .card .card-link:hover {
            gap: 0.7rem;
            color: var(--accent-dark);
        }

        /* Card with cover image */
        .card-cover {
            overflow: hidden;
            padding: 0;
            background: var(--bg-card);
        }
        .card-cover .cover-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
            display: block;
        }
        .card-cover .cover-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }
        .card-cover .cover-body h3 {
            font-size: 1.05rem;
            margin-bottom: 0.3rem;
        }
        .card-cover .cover-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.6rem;
        }
        .card-cover .cover-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.75rem;
            color: var(--text-light);
            margin-bottom: 0.5rem;
        }
        .card-cover .cover-meta i {
            margin-right: 0.2rem;
        }
        .card-cover .badge {
            font-size: 0.65rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 100px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--accent);
        }

        /* ===== Feature / Highlight List ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .feature-item {
            text-align: center;
            padding: 2rem 1.5rem;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .feature-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }
        .feature-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }
        .feature-item p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== Steps / Timeline ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 2rem;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 2rem 1rem;
            position: relative;
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            margin: 0 auto 1rem;
            border-radius: 50%;
            background: var(--accent-gradient);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 48px;
            box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25);
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }
        .step-item p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.5;
            max-width: 260px;
            margin: 0 auto;
        }
        .section-dark .step-item p {
            color: rgba(255, 255, 255, 0.55);
        }
        .section-dark .step-item h4 {
            color: #fff;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: transparent;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.1rem 1.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }
        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-dark .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .section-dark .faq-question {
            color: #fff;
        }
        .section-dark .faq-answer p {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--accent-gradient);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.6rem;
            letter-spacing: -0.02em;
            position: relative;
        }
        .cta-box p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
            position: relative;
        }
        .cta-box .btn-primary {
            background: #fff;
            color: var(--primary);
            padding: 0.75rem 2rem;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
            position: relative;
        }
        .cta-box .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 2.5rem 1.5rem;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box p {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .cta-box {
                padding: 2rem 1rem;
            }
            .cta-box h2 {
                font-size: 1.25rem;
            }
            .cta-box .btn-primary {
                font-size: 0.85rem;
                padding: 0.6rem 1.5rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo-footer {
            font-size: 1.3rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-gradient {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-1 {
            gap: 0.25rem;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .gap-4 {
            gap: 1.5rem;
        }
        .gap-5 {
            gap: 2rem;
        }
        .mt-1 {
            margin-top: 0.25rem;
        }
        .mt-2 {
            margin-top: 0.5rem;
        }
        .mt-3 {
            margin-top: 1rem;
        }
        .mt-4 {
            margin-top: 1.5rem;
        }
        .mt-5 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 0.25rem;
        }
        .mb-2 {
            margin-bottom: 0.5rem;
        }
        .mb-3 {
            margin-bottom: 1rem;
        }
        .mb-4 {
            margin-bottom: 1.5rem;
        }
        .mb-5 {
            margin-bottom: 2rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-center {
            text-align: center;
        }
        .relative {
            position: relative;
        }
        .overflow-hidden {
            overflow: hidden;
        }

        /* focus-visible for accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-alt: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
        }

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

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0,0,0,0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            flex-shrink: 0;
        }
        .logo:hover {
            opacity: 0.85;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(37,99,235,0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(37,99,235,0.10);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0 16px;
            flex: 1;
            max-width: 320px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
        }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 10px 8px;
            outline: none;
            flex: 1;
            font-size: 0.9rem;
            color: var(--text-primary);
            min-width: 0;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search button {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            padding: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--primary);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--border-light);
        }

        @media (max-width: 768px) {
            .nav-search {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 20px;
                font-size: 1.05rem;
            }
            .mobile-toggle {
                display: block;
            }
            .header-inner {
                height: 60px;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 1.25rem;
            }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.72) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb .sep {
            color: rgba(255,255,255,0.3);
        }
        .article-banner .breadcrumb .current {
            color: #fff;
            font-weight: 500;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            max-width: 800px;
            margin-bottom: 16px;
        }
        .article-banner .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
        }
        .article-banner .meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .article-banner .category-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 60px 0 40px;
                min-height: 200px;
            }
            .article-banner h1 {
                font-size: 1.6rem;
            }
            .article-banner .meta {
                gap: 12px;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.35rem;
            }
            .article-banner {
                padding: 48px 0 32px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-content-wrap {
            padding: 56px 0 64px;
        }
        .article-content-inner {
            max-width: 800px;
            margin: 0 auto;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 2em;
            margin-bottom: 0.8em;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }
        .article-body h2 {
            font-size: 1.6rem;
        }
        .article-body h3 {
            font-size: 1.3rem;
        }
        .article-body h4 {
            font-size: 1.1rem;
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.8em;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 0.4em;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.8em 0;
            background: rgba(37,99,235,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 2em auto;
            box-shadow: var(--shadow);
        }
        .article-body pre {
            background: var(--bg-dark);
            color: var(--text-inverse);
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.8em 0;
            line-height: 1.6;
        }
        .article-body code {
            background: var(--border-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-dark);
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body hr {
            border: none;
            height: 1px;
            background: var(--border);
            margin: 2.4em 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 0.95rem;
        }
        .article-body th, .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body th {
            background: var(--bg-body);
            font-weight: 600;
        }
        .article-body .cms-safe-content {
            width: 100%;
        }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            display: block;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.1rem;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        @media (max-width: 768px) {
            .article-content-wrap {
                padding: 40px 0 48px;
            }
            .article-body {
                font-size: 0.98rem;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--bg-body);
            padding: 56px 0 64px;
        }
        .related-section .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 36px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover img {
            transform: scale(1.03);
        }
        .related-card .card-body {
            padding: 20px;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-body .meta-sm {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card img {
                height: 200px;
            }
            .related-section .section-title {
                font-size: 1.35rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 64px 0 72px;
            background: var(--bg-card);
        }
        .faq-section .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            text-align: center;
            margin-bottom: 12px;
        }
        .faq-section .section-sub {
            text-align: center;
            color: var(--text-secondary);
            margin-bottom: 40px;
            font-size: 1.05rem;
        }
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-primary);
            transition: var(--transition);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item[open] summary {
            color: var(--primary);
            background: rgba(37,99,235,0.03);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        @media (max-width: 640px) {
            .faq-section {
                padding: 48px 0 56px;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0 80px;
            background: var(--bg-dark);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(30,41,59,0.85) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-section .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(37,99,235,0.30);
        }
        .cta-section .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: transparent;
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            border: 2px solid rgba(255,255,255,0.25);
            cursor: pointer;
        }
        .cta-section .btn-secondary:hover {
            border-color: rgba(255,255,255,0.6);
            background: rgba(255,255,255,0.06);
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 56px 0 64px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn-primary,
            .cta-section .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-inverse);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo-footer {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #60a5fa, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #60a5fa;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: #60a5fa;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 通用工具 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-pad {
            padding: 64px 0;
        }
        @media (max-width: 640px) {
            .section-pad {
                padding: 48px 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --secondary: #7c3aed;
            --accent: #f59e0b;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-main: #334155;
            --text-weak: #94a3b8;
            --border-light: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: var(--bg-light); color: var(--text-main); line-height: 1.7; }
        img { max-width:100%; height:auto; display:block; }
        a { color:inherit; text-decoration:none; transition:var(--transition); }
        .container { max-width:1280px; margin:0 auto; padding:0 24px; }
        .site-header { background:rgba(255,255,255,0.92); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border-bottom:1px solid rgba(226,232,240,0.6); position:sticky; top:0; z-index:100; }
        .header-inner { display:flex; align-items:center; justify-content:space-between; padding:14px 0; gap:20px; }
        .logo { font-size:1.6rem; font-weight:800; background:linear-gradient(135deg,var(--primary),var(--secondary)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; letter-spacing:-0.5px; white-space:nowrap; }
        .nav-links { display:flex; align-items:center; gap:6px; }
        .nav-links a { padding:8px 18px; border-radius:40px; font-size:0.95rem; font-weight:500; color:var(--text-main); transition:var(--transition); position:relative; }
        .nav-links a:hover { background:rgba(26,86,219,0.08); color:var(--primary); }
        .nav-links a.active { background:var(--primary); color:#fff; box-shadow:0 4px 14px rgba(26,86,219,0.25); }
        .search-box { display:flex; align-items:center; background:#fff; border:1.5px solid var(--border-light); border-radius:40px; padding:6px 6px 6px 18px; transition:var(--transition); flex:1; max-width:380px; box-shadow:0 2px 8px rgba(0,0,0,0.04); }
        .search-box:focus-within { border-color:var(--primary-light); box-shadow:0 4px 16px rgba(26,86,219,0.12); }
        .search-box input { border:none; outline:none; background:transparent; flex:1; font-size:0.9rem; padding:6px 0; color:var(--text-dark); min-width:0; }
        .search-box input::placeholder { color:var(--text-weak); }
        .search-box button { background:var(--primary); border:none; color:#fff; width:36px; height:36px; border-radius:50%; cursor:pointer; transition:var(--transition); display:flex; align-items:center; justify-content:center; font-size:0.9rem; }
        .search-box button:hover { background:var(--primary-dark); transform:scale(1.04); }
        .mobile-toggle { display:none; font-size:1.4rem; color:var(--text-dark); background:none; border:none; cursor:pointer; padding:4px; }
        .banner { position:relative; min-height:380px; display:flex; align-items:center; justify-content:center; text-align:center; background:linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0f172a 100%); overflow:hidden; border-radius:0 0 var(--radius) var(--radius); margin-bottom:0; }
        .banner-bg { position:absolute; inset:0; background:url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity:0.25; mix-blend-mode:overlay; }
        .banner-overlay { position:absolute; inset:0; background:radial-gradient(ellipse at 30% 40%, rgba(26,86,219,0.20) 0%, transparent 70%); }
        .banner-content { position:relative; z-index:2; max-width:820px; padding:60px 24px; }
        .banner-tag { display:inline-block; background:rgba(255,255,255,0.12); color:#fff; padding:6px 20px; border-radius:40px; font-size:0.85rem; letter-spacing:0.3px; backdrop-filter:blur(4px); border:1px solid rgba(255,255,255,0.08); margin-bottom:20px; }
        .banner h1 { font-size:3.2rem; font-weight:800; color:#fff; line-height:1.2; letter-spacing:-1px; margin-bottom:16px; }
        .banner p { font-size:1.15rem; color:rgba(255,255,255,0.75); max-width:600px; margin:0 auto 28px; line-height:1.7; }
        .banner-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
        .btn { display:inline-flex; align-items:center; gap:8px; padding:12px 30px; border-radius:40px; font-weight:600; font-size:0.95rem; transition:var(--transition); cursor:pointer; border:none; }
        .btn-primary { background:var(--primary); color:#fff; box-shadow:0 4px 16px rgba(26,86,219,0.25); }
        .btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 28px rgba(26,86,219,0.30); }
        .btn-outline { background:transparent; color:#fff; border:1.5px solid rgba(255,255,255,0.25); }
        .btn-outline:hover { background:rgba(255,255,255,0.10); border-color:rgba(255,255,255,0.45); transform:translateY(-2px); }
        .section { padding:80px 0; }
        .section-label { display:inline-block; font-size:0.8rem; font-weight:600; text-transform:uppercase; letter-spacing:1.5px; color:var(--primary); background:rgba(26,86,219,0.08); padding:4px 16px; border-radius:20px; margin-bottom:12px; }
        .section-title { font-size:2.2rem; font-weight:700; color:var(--text-dark); line-height:1.3; margin-bottom:12px; }
        .section-sub { font-size:1.05rem; color:var(--text-weak); max-width:600px; margin-bottom:40px; }
        .grid-cards { display:grid; grid-template-columns:repeat(auto-fill, minmax(280px,1fr)); gap:24px; }
        .card { background:var(--bg-card); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-card); transition:var(--transition); border:1px solid rgba(226,232,240,0.5); }
        .card:hover { transform:translateY(-6px); box-shadow:var(--shadow-hover); }
        .card-img { width:100%; height:180px; object-fit:cover; }
        .card-body { padding:24px; }
        .card-tag { display:inline-block; font-size:0.75rem; font-weight:600; color:var(--primary); background:rgba(26,86,219,0.08); padding:2px 12px; border-radius:12px; margin-bottom:10px; }
        .card h3 { font-size:1.15rem; font-weight:700; color:var(--text-dark); margin-bottom:8px; line-height:1.4; }
        .card p { font-size:0.9rem; color:var(--text-weak); line-height:1.6; margin-bottom:14px; }
        .card-footer { display:flex; align-items:center; justify-content:space-between; padding-top:12px; border-top:1px solid var(--border-light); font-size:0.85rem; color:var(--text-weak); }
        .badge { display:inline-flex; align-items:center; gap:4px; background:rgba(245,158,11,0.10); color:#b45309; padding:2px 10px; border-radius:12px; font-size:0.75rem; font-weight:600; }
        .path-steps { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px,1fr)); gap:20px; margin-top:20px; }
        .path-step { background:var(--bg-card); border-radius:var(--radius); padding:32px 24px; text-align:center; box-shadow:var(--shadow-card); border:1px solid rgba(226,232,240,0.5); transition:var(--transition); position:relative; }
        .path-step:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
        .step-num { width:48px; height:48px; border-radius:50%; display:flex; align-items:center; justify-content:center; margin:0 auto 16px; font-size:1.2rem; font-weight:800; color:#fff; background:linear-gradient(135deg,var(--primary),var(--secondary)); }
        .path-step h4 { font-size:1.05rem; font-weight:700; color:var(--text-dark); margin-bottom:6px; }
        .path-step p { font-size:0.9rem; color:var(--text-weak); line-height:1.6; }
        .faq-grid { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
        .faq-item { background:var(--bg-card); border-radius:var(--radius-sm); padding:24px 28px; box-shadow:var(--shadow-card); border:1px solid rgba(226,232,240,0.5); transition:var(--transition); }
        .faq-item:hover { box-shadow:var(--shadow-hover); }
        .faq-item h4 { font-size:1rem; font-weight:700; color:var(--text-dark); margin-bottom:8px; display:flex; align-items:center; gap:8px; }
        .faq-item h4 i { color:var(--primary); font-size:0.9rem; }
        .faq-item p { font-size:0.9rem; color:var(--text-weak); line-height:1.7; }
        .cta-section { background:linear-gradient(135deg, #0f172a 0%, #1e293b 100%); border-radius:var(--radius); padding:64px 48px; text-align:center; position:relative; overflow:hidden; }
        .cta-section::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity:0.08; mix-blend-mode:overlay; }
        .cta-section h2 { font-size:2rem; font-weight:700; color:#fff; margin-bottom:12px; position:relative; }
        .cta-section p { color:rgba(255,255,255,0.65); max-width:520px; margin:0 auto 28px; font-size:1.05rem; position:relative; }
        .cta-section .btn { position:relative; }
        .site-footer { background:#0f172a; color:rgba(255,255,255,0.7); padding:60px 0 30px; margin-top:80px; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:40px; }
        .logo-footer { font-size:1.4rem; font-weight:800; background:linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
        .footer-brand p { font-size:0.9rem; line-height:1.7; margin-top:12px; max-width:320px; color:rgba(255,255,255,0.55); }
        .footer-col h4 { font-size:0.95rem; font-weight:700; color:#fff; margin-bottom:16px; }
        .footer-col ul { list-style:none; display:flex; flex-direction:column; gap:10px; }
        .footer-col ul a { font-size:0.88rem; color:rgba(255,255,255,0.55); transition:var(--transition); }
        .footer-col ul a:hover { color:#fff; padding-left:4px; }
        .footer-bottom { border-top:1px solid rgba(255,255,255,0.06); padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:0.85rem; color:rgba(255,255,255,0.4); }
        .footer-bottom a { color:rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color:#fff; }
        @media (max-width:1024px) {
            .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
            .faq-grid { grid-template-columns:1fr; }
            .banner h1 { font-size:2.6rem; }
        }
        @media (max-width:768px) {
            .header-inner { flex-wrap:wrap; }
            .mobile-toggle { display:block; }
            .nav-links { display:none; width:100%; flex-direction:column; background:#fff; border-radius:var(--radius-sm); padding:12px; box-shadow:0 12px 40px rgba(0,0,0,0.08); gap:4px; }
            .nav-links.open { display:flex; }
            .nav-links a { width:100%; text-align:center; padding:12px; }
            .search-box { order:3; max-width:100%; flex:1 1 100%; margin-top:8px; }
            .banner h1 { font-size:2rem; }
            .banner p { font-size:1rem; }
            .section { padding:48px 0; }
            .section-title { font-size:1.6rem; }
            .grid-cards { grid-template-columns:1fr 1fr; gap:16px; }
            .path-steps { grid-template-columns:1fr 1fr; }
            .cta-section { padding:40px 24px; }
            .cta-section h2 { font-size:1.5rem; }
            .footer-grid { grid-template-columns:1fr; gap:28px; }
        }
        @media (max-width:520px) {
            .container { padding:0 16px; }
            .banner h1 { font-size:1.6rem; }
            .grid-cards { grid-template-columns:1fr; }
            .path-steps { grid-template-columns:1fr; }
            .banner-actions { flex-direction:column; align-items:center; }
            .btn { width:100%; justify-content:center; }
        }