/* roulang page: index */
:root {
            --primary: #0f2b46;
            --primary-light: #1e4d7b;
            --primary-dark: #081d30;
            --accent: #c9a227;
            --accent-light: #faf3e0;
            --accent-dark: #a8861f;
            --bg: #f5f4f1;
            --bg-white: #ffffff;
            --bg-dark: #0b1e30;
            --text: #1a202c;
            --text-light: #64748b;
            --text-lighter: #94a3b8;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
        img{max-width:100%;display:block}
        a{text-decoration:none;color:inherit;transition:var(--transition)}
        button{font-family:inherit;cursor:pointer;border:none;background:none}
        input{font-family:inherit;outline:none}
        .container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
        .section{padding:80px 0}
        .section-header{text-align:center;margin-bottom:56px}
        .section-header .tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:13px;font-weight:600;letter-spacing:2px;padding:6px 20px;border-radius:50px;margin-bottom:16px}
        .section-header h2{font-size:2.2rem;font-weight:700;color:var(--primary);letter-spacing:-0.5px;line-height:1.3;margin-bottom:12px}
        .section-header p{color:var(--text-light);font-size:1rem;max-width:640px;margin:0 auto}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-weight:600;font-size:14px;transition:var(--transition);letter-spacing:0.3px;justify-content:center}
        .btn-primary{background:var(--accent);color:var(--primary-dark);box-shadow:0 4px 16px rgba(201,162,39,0.3)}
        .btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,162,39,0.4)}
        .btn-outline{border:2px solid rgba(255,255,255,0.8);color:#fff;background:rgba(255,255,255,0.1);backdrop-filter:blur(8px)}
        .btn-outline:hover{background:rgba(255,255,255,0.2);border-color:#fff;transform:translateY(-2px)}
        .btn-dark{background:var(--primary);color:#fff;box-shadow:0 4px 16px rgba(15,43,70,0.3)}
        .btn-dark:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,43,70,0.4)}

        /* Header */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(16px);box-shadow:0 1px 0 var(--border)}
        .nav-top{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}
        .logo{display:flex;align-items:center;gap:10px}
        .logo-icon{width:40px;height:40px;border-radius:10px;background:var(--primary);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:18px}
        .logo-text{font-size:22px;font-weight:800;color:var(--primary);letter-spacing:1px}
        .logo-text span{color:var(--accent)}
        .nav-actions{display:flex;align-items:center;gap:12px}
        .search-box{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:50px;padding:8px 16px;width:260px;transition:var(--transition)}
        .search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,162,39,0.15)}
        .search-box input{background:transparent;border:none;font-size:13px;width:100%;color:var(--text)}
        .search-box i{color:var(--text-lighter);font-size:13px;margin-right:8px}
        .nav-tabs-scroll{display:flex;gap:4px;overflow-x:auto;padding:10px 0;scrollbar-width:none;-ms-overflow-style:none}
        .nav-tabs-scroll::-webkit-scrollbar{display:none}
        .nav-tab{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:50px;font-size:14px;font-weight:500;color:var(--text-light);white-space:nowrap;transition:var(--transition)}
        .nav-tab:hover{background:var(--bg);color:var(--primary)}
        .nav-tab.active{background:var(--primary);color:#fff;box-shadow:0 2px 10px rgba(15,43,70,0.25)}
        .nav-toggle{display:none;width:40px;height:40px;border-radius:10px;background:var(--bg);align-items:center;justify-content:center;font-size:18px;color:var(--primary)}

        /* Hero */
        .hero{position:relative;min-height:600px;display:flex;align-items:center;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;overflow:hidden}
        .hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,43,70,0.88) 0%,rgba(15,43,70,0.55) 60%,rgba(8,29,48,0.3) 100%)}
        .hero-content{position:relative;z-index:2;padding:100px 0;max-width:760px}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(201,162,39,0.2);border:1px solid rgba(201,162,39,0.4);color:#f0e4cd;font-size:13px;font-weight:500;padding:6px 18px;border-radius:50px;margin-bottom:24px;backdrop-filter:blur(6px)}
        .hero-badge i{color:var(--accent)}
        .hero h1{font-size:3.2rem;font-weight:800;color:#fff;line-height:1.25;letter-spacing:-1px;margin-bottom:16px}
        .hero h1 span{color:var(--accent)}
        .hero-sub{font-size:1.25rem;color:rgba(255,255,255,0.9);margin-bottom:12px;font-weight:300;letter-spacing:2px}
        .hero p{font-size:16px;color:rgba(255,255,255,0.8);max-width:560px;margin-bottom:36px;line-height:1.8}
        .hero-btns{display:flex;gap:16px;flex-wrap:wrap}
        .hero-scroll-indicator{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,0.6);font-size:24px;animation:bounceDown 2s infinite}
        @keyframes bounceDown{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(10px)}}

        /* Stats */
        .stats-section{margin-top:-1px;background:var(--bg-white);border-bottom:1px solid var(--border)}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:48px 0}
        .stat-card{text-align:center;padding:20px}
        .stat-card .stat-num{font-size:2.4rem;font-weight:800;color:var(--primary);line-height:1.2}
        .stat-card .stat-label{font-size:14px;color:var(--text-light);margin-top:6px;font-weight:500}
        .stat-card .stat-icon{font-size:28px;color:var(--accent);margin-bottom:10px}

        /* Service Cards */
        .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
        .service-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 32px;transition:var(--transition);position:relative;overflow:hidden}
        .service-card::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:3px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 0.4s ease}
        .service-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
        .service-card:hover::after{transform:scaleX(1)}
        .service-icon{width:60px;height:60px;border-radius:16px;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent-dark);margin-bottom:20px}
        .service-card h3{font-size:1.2rem;font-weight:700;color:var(--primary);margin-bottom:12px}
        .service-card p{font-size:14px;color:var(--text-light);line-height:1.8}

        /* Category Entry */
        .category-section{background:var(--bg-white)}
        .category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:360px;display:flex;align-items:flex-end;cursor:pointer}
        .category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .category-card:hover img{transform:scale(1.05)}
        .category-card .overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,43,70,0.9) 0%,rgba(15,43,70,0.3) 50%,transparent 100%)}
        .category-card .content{position:relative;z-index:2;padding:32px}
        .category-card .content h3{color:#fff;font-size:1.5rem;font-weight:700;margin-bottom:8px}
        .category-card .content p{color:rgba(255,255,255,0.85);font-size:14px;line-height:1.6;margin-bottom:16px}
        .category-card .content .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
        .category-card .content .tags span{background:rgba(255,255,255,0.15);backdrop-filter:blur(4px);padding:4px 12px;border-radius:50px;font-size:12px;color:#fff;border:1px solid rgba(255,255,255,0.2)}
        .category-entry-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:28px}
        .category-sub-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:300px;display:flex;align-items:flex-end}
        .category-sub-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .category-sub-card:hover img{transform:scale(1.05)}
        .category-sub-card .overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,43,70,0.85),rgba(15,43,70,0.2))}
        .category-sub-card .content{position:relative;z-index:2;padding:28px}
        .category-sub-card .content h4{color:#fff;font-size:1.1rem;font-weight:600;margin-bottom:6px}
        .category-sub-card .content span{color:var(--accent);font-size:13px}

        /* Posts */
        .posts-section{background:var(--bg)}
        .post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
        .post-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:var(--transition);display:flex;flex-direction:column}
        .post-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}
        .post-card .post-cat{display:inline-flex;align-items:center;gap:6px;background:var(--accent-light);color:var(--accent-dark);font-size:12px;font-weight:600;padding:4px 14px;border-radius:50px;margin-bottom:16px;align-self:flex-start}
        .post-card h3{font-size:1.05rem;font-weight:600;color:var(--text);line-height:1.6;margin-bottom:12px;transition:var(--transition)}
        .post-card:hover h3{color:var(--primary)}
        .post-card p{font-size:14px;color:var(--text-light);line-height:1.7;flex-grow:1;margin-bottom:20px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
        .post-card .post-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-lighter);padding-top:16px;border-top:1px solid var(--border)}
        .post-card .post-meta i{margin-right:4px}
        .empty-tip{text-align:center;padding:40px;color:var(--text-light);font-size:15px;background:var(--bg-white);border-radius:var(--radius);border:1px dashed var(--border)}

        /* Featured */
        .featured-section{background:var(--bg-white)}
        .featured-item{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:80px}
        .featured-item:last-child{margin-bottom:0}
        .featured-item.reverse .featured-img{order:2}
        .featured-img{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
        .featured-img img{width:100%;height:340px;object-fit:cover}
        .featured-img .img-badge{position:absolute;top:20px;left:20px;background:rgba(15,43,70,0.85);backdrop-filter:blur(8px);color:#fff;font-size:13px;font-weight:500;padding:6px 16px;border-radius:50px;display:flex;align-items:center;gap:6px}
        .featured-content .tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:13px;font-weight:600;padding:5px 16px;border-radius:50px;margin-bottom:16px}
        .featured-content h2{font-size:1.8rem;font-weight:700;color:var(--primary);margin-bottom:16px;line-height:1.4}
        .featured-content p{font-size:15px;color:var(--text-light);line-height:1.8;margin-bottom:24px}
        .featured-list{list-style:none;margin-bottom:28px}
        .featured-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text);margin-bottom:10px}
        .featured-list li i{color:var(--accent);margin-top:4px;font-size:15px;flex-shrink:0}

        /* Process */
        .process-section{background:var(--bg-dark);position:relative;overflow:hidden}
        .process-section::before{content:'';position:absolute;top:-100px;right:-100px;width:400px;height:400px;border-radius:50%;background:rgba(201,162,39,0.08)}
        .process-section .section-header h2{color:#fff}
        .process-section .section-header p{color:rgba(255,255,255,0.6)}
        .process-section .section-header .tag{background:rgba(201,162,39,0.2);color:var(--accent)}
        .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:2}
        .process-step{text-align:center;position:relative}
        .step-num{width:60px;height:60px;border-radius:50%;background:rgba(201,162,39,0.15);border:2px solid var(--accent);color:var(--accent);font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}
        .process-step h3{color:#fff;font-size:1.1rem;font-weight:600;margin-bottom:10px}
        .process-step p{color:rgba(255,255,255,0.6);font-size:14px;line-height:1.7}
        .process-step::after{content:'→';position:absolute;top:18px;right:-20px;color:rgba(255,255,255,0.3);font-size:20px}
        .process-step:last-child::after{display:none}

        /* FAQ */
        .faq-section{background:var(--bg)}
        .faq-list{max-width:820px;margin:0 auto}
        .faq-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:var(--transition)}
        .faq-item:hover{border-color:var(--accent)}
        .faq-item summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:22px 28px;cursor:pointer;font-weight:600;font-size:15px;color:var(--text);transition:var(--transition)}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary i{color:var(--accent);font-size:14px;transition:transform 0.3s ease;flex-shrink:0;margin-left:12px}
        .faq-item[open] summary{border-bottom:1px solid var(--border)}
        .faq-item[open] summary i{transform:rotate(45deg)}
        .faq-item .faq-answer{padding:20px 28px;font-size:14px;color:var(--text-light);line-height:1.8}

        /* CTA */
        .cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 60%,var(--primary-dark) 100%);padding:80px 0;text-align:center;position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;opacity:0.15}
        .cta-content{position:relative;z-index:2;max-width:640px;margin:0 auto}
        .cta-content h2{color:#fff;font-size:2.2rem;font-weight:700;margin-bottom:16px}
        .cta-content p{color:rgba(255,255,255,0.8);font-size:16px;margin-bottom:32px}
        .cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

        /* Footer */
        .site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:60px 0 0}
        .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
        .footer-brand .logo-text{color:#fff;font-size:20px;margin-bottom:12px}
        .footer-brand p{font-size:14px;line-height:1.7;margin-bottom:20px}
        .footer-social{display:flex;gap:10px}
        .footer-social a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;font-size:14px;color:rgba(255,255,255,0.8);transition:var(--transition)}
        .footer-social a:hover{background:var(--accent);color:var(--primary-dark);transform:translateY(-2px)}
        .footer-links h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
        .footer-links ul{list-style:none}
        .footer-links ul li{margin-bottom:10px}
        .footer-links ul li a{font-size:14px;color:rgba(255,255,255,0.6);transition:var(--transition)}
        .footer-links ul li a:hover{color:var(--accent);padding-left:6px}
        .footer-contact ul li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,0.6);margin-bottom:12px}
        .footer-contact ul li i{color:var(--accent);margin-top:4px;font-size:14px;flex-shrink:0}
        .footer-bottom{padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,0.4)}

        /* Responsive */
        @media (max-width:1024px){
            .container{padding:0 20px}
            .section{padding:64px 0}
            .hero h1{font-size:2.6rem}
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
            .service-grid{grid-template-columns:repeat(1,1fr);max-width:600px;margin:0 auto}
            .category-entry-grid{grid-template-columns:1fr}
            .posts-grid,.post-grid{grid-template-columns:repeat(2,1fr)}
            .featured-item{grid-template-columns:1fr;gap:32px}
            .featured-item.reverse .featured-img{order:0}
            .process-grid{grid-template-columns:repeat(2,1fr);gap:40px}
            .process-step::after{display:none}
            .footer-grid{grid-template-columns:1fr 1fr}
        }
        @media (max-width:768px){
            .nav-top{padding:10px 0}
            .search-box{display:none}
            .nav-toggle{display:flex}
            .nav-actions .btn-nav{display:none}
            .nav-tabs-scroll{padding:8px 0}
            .hero{min-height:480px}
            .hero-content{padding:60px 0}
            .hero h1{font-size:2rem}
            .hero-sub{font-size:1rem}
            .section-header h2{font-size:1.8rem}
            .section{padding:48px 0}
            .stats-grid{grid-template-columns:repeat(2,1fr)}
            .post-grid{grid-template-columns:1fr}
            .featured-img img{height:260px}
            .category-card{min-height:280px}
            .footer-grid{grid-template-columns:1fr;gap:32px}
            .cta-section{padding:60px 0}
            .cta-content h2{font-size:1.6rem}
        }
        @media (max-width:520px){
            .container{padding:0 16px}
            .hero h1{font-size:1.7rem}
            .hero-btns{flex-direction:column}
            .btn{width:100%}
            .stats-grid{grid-template-columns:1fr 1fr;padding:32px 0}
            .stat-card .stat-num{font-size:1.8rem}
            .process-grid{grid-template-columns:1fr}
            .service-card{padding:24px}
            .post-card{padding:22px}
            .faq-item summary{padding:18px 20px;font-size:14px}
            .cta-btns{flex-direction:column}
            .cta-btns .btn{width:100%}
            .footer-grid{grid-template-columns:1fr}
        }

/* roulang page: category1 */
:root {
            --primary: #0f766e;
            --primary-dark: #134e4a;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --text: #0f172a;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
            --spacing-section: 90px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

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

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

        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 20px rgba(15, 23, 42, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }

        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 18px 0 12px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            line-height: 1.2;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--accent);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex: 1;
            justify-content: flex-end;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 18px;
            width: 320px;
            max-width: 100%;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }

        .search-box i {
            color: var(--muted);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            background: transparent;
            flex: 1;
            font-size: 14px;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: #94a3b8;
        }

        .nav-toggle {
            display: none;
            background: var(--primary);
            color: #fff;
            border: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 17px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background 0.3s;
        }

        .nav-toggle:hover {
            background: var(--primary-dark);
        }

        .nav-tabs-scroll {
            display: flex;
            gap: 6px;
            padding: 4px 0 14px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-tabs-scroll::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .nav-tab i {
            font-size: 13px;
        }

        .nav-tab:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.07);
            border-color: rgba(15, 118, 110, 0.15);
        }

        .nav-tab.active {
            color: #ffffff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(15, 118, 110, 0.7)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 110px 0 90px;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg), transparent);
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }

        .page-hero h1 .highlight {
            color: var(--accent);
        }

        .page-hero p.lead {
            font-size: 18px;
            max-width: 640px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.85);
        }

        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            background: rgba(0, 0, 0, 0.2);
            border-radius: 8px;
            padding: 8px 16px;
            backdrop-filter: blur(4px);
        }

        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-alt {
            background: #ffffff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-header .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-header h2 span {
            color: var(--primary);
        }

        .section-header p {
            color: var(--muted);
            font-size: 16px;
        }

        /* ===== Intro Stats ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-content h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .intro-content h2 span {
            color: var(--primary);
        }

        .intro-content p {
            color: var(--muted);
            font-size: 16px;
            margin-bottom: 16px;
        }

        .intro-list {
            margin-top: 24px;
            display: grid;
            gap: 12px;
        }

        .intro-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 14px 18px;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
        }

        .intro-list li i {
            color: var(--primary);
            font-size: 16px;
            width: 22px;
            text-align: center;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .stat-card .num {
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-card .num i {
            font-size: 22px;
            color: var(--accent);
            margin-right: 4px;
        }

        .stat-card .label {
            font-size: 14px;
            color: var(--muted);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== Pill Tags ===== */
        .guide-tags-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 44px;
        }

        .pill-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 22px;
            border-radius: 999px;
            background: #ffffff;
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
        }

        .pill-tag i {
            font-size: 13px;
            color: var(--primary);
        }

        .pill-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(15, 118, 110, 0.06);
            transform: translateY(-2px);
        }

        .pill-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
        }

        /* ===== Content Cards ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .content-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.35s, box-shadow 0.35s;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .content-card .card-img {
            position: relative;
            overflow: hidden;
            height: 200px;
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .content-card:hover .card-img img {
            transform: scale(1.06);
        }

        .content-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.35), transparent 50%);
        }

        .card-category {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(15, 118, 110, 0.92);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
            transition: color 0.3s;
        }

        .content-card:hover .card-body h3 {
            color: var(--primary);
        }

        .card-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }

        .card-meta .date {
            font-size: 13px;
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-meta .readmore {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap 0.3s;
        }

        .content-card:hover .card-meta .readmore {
            gap: 9px;
        }

        /* ===== News List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 18px;
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px;
            transition: box-shadow 0.3s, transform 0.3s;
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .news-icon {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .news-content h4 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
            transition: color 0.3s;
        }

        .news-content h4:hover {
            color: var(--primary);
        }

        .news-content p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
        }

        .news-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(245, 158, 11, 0.1);
            padding: 2px 10px;
            border-radius: 999px;
            margin-bottom: 6px;
        }

        /* ===== Rank ===== */
        .rank-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rank-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px;
            position: relative;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
            overflow: hidden;
        }

        .rank-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .rank-number {
            font-size: 42px;
            font-weight: 900;
            color: rgba(15, 118, 110, 0.12);
            line-height: 1;
            position: absolute;
            top: 16px;
            right: 20px;
        }

        .rank-card.top .rank-number {
            color: rgba(245, 158, 11, 0.3);
        }

        .rank-card .rank-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .rank-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .rank-card p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 14px;
        }

        .rank-score {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
        }

        .rank-score .bar {
            flex: 1;
            height: 6px;
            background: #f1f5f9;
            border-radius: 99px;
            overflow: hidden;
        }

        .rank-score .bar span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 99px;
        }

        .rank-score .val {
            color: var(--primary);
            font-weight: 800;
        }

        /* ===== How To ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.28);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
        }

        .faq-item:hover {
            border-color: rgba(15, 118, 110, 0.4);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            text-align: left;
            transition: color 0.3s;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.3s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            text-align: center;
            padding: 70px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 30px;
            font-size: 16px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 15px;
            padding: 14px 34px;
            border-radius: 999px;
            border: none;
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.35);
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-primary:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(245, 158, 11, 0.45);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.6);
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 30px;
            border-radius: 999px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0b1220;
            color: #94a3b8;
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1.1fr;
            gap: 44px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 22px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(148, 163, 184, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #cbd5e1;
            transition: all 0.3s;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links ul,
        .footer-contact ul {
            list-style: none;
            display: grid;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: #94a3b8;
            transition: color 0.3s;
        }

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

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-contact i {
            color: var(--accent);
            margin-top: 3px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== Focus States ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.5);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 44px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
            }

            .nav-top {
                padding: 14px 0 10px;
            }

            .search-box {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-tabs-scroll {
                display: flex;
                gap: 6px;
                padding-bottom: 12px;
            }

            .nav-tabs-scroll.collapsed {
                display: none;
            }

            .page-hero {
                padding: 80px 0 64px;
            }

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

            .page-hero p.lead {
                font-size: 16px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .stats-grid {
                gap: 14px;
            }

            .stat-card {
                padding: 20px 14px;
            }

            .stat-card .num {
                font-size: 26px;
            }

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

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

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .hero-meta {
                gap: 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .logo-text {
                font-size: 18px;
            }

            .page-hero h1 {
                font-size: 27px;
            }

            .intro-content h2 {
                font-size: 24px;
            }

            .guide-tags-row {
                gap: 8px;
            }

            .pill-tag {
                padding: 7px 14px;
                font-size: 13px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer p {
                padding: 0 18px 16px;
                font-size: 14px;
            }

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

/* roulang page: article */
:root {
  --primary: #0f766e;
  --primary-dark: #134e4a;
  --primary-light: #14b8a6;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg: #f8fafc;
  --bg-soft: #f1f5f9;
  --text: #1e293b;
  --text-body: #334155;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --transition: all 0.3s ease;
  --container: 1200px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
ul,
ol {
  list-style: none;
}
button,
input,
summary {
  font-family: inherit;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  color: #fff;
}
.btn-primary {
  background: var(--primary);
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.28);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.35);
}
.btn-accent {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.3);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}
.btn-light {
  background: #fff;
  color: var(--primary-dark);
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.btn-light:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}
.tag-accent {
  background: rgba(245, 158, 11, 0.15);
  color: #b45309;
  border-color: rgba(245, 158, 11, 0.25);
}
.tag-accent:hover {
  background: var(--accent);
  color: #fff;
}
.tag-topic {
  background: var(--bg-soft);
  color: var(--text-weak);
  border-color: var(--border);
}
.tag-topic:hover {
  background: rgba(15, 118, 110, 0.1);
  color: var(--primary);
  border-color: rgba(15, 118, 110, 0.2);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 20px;
  flex-wrap: wrap;
}
.section-head.center {
  justify-content: center;
  text-align: center;
}
.section-eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
}
.text-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.text-link i {
  transition: transform 0.3s ease;
}
.text-link:hover {
  color: var(--primary-dark);
}
.text-link:hover i {
  transform: translateX(4px);
}
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
}
.nav-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0 14px;
  gap: 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}
.logo-text span {
  color: var(--accent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  width: 280px;
  color: var(--text-weak);
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 14px;
  color: var(--text);
}
.nav-toggle {
  display: none;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
  font-size: 16px;
  transition: var(--transition);
}
.nav-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.nav-tabs-scroll {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: none;
}
.nav-tabs-scroll::-webkit-scrollbar {
  display: none;
}
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: var(--transition);
}
.nav-tab i {
  font-size: 13px;
}
.nav-tab:hover {
  color: var(--primary);
  background: rgba(15, 118, 110, 0.06);
}
.nav-tab.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.25);
}
.page-banner {
  background-size: cover;
  background-position: center;
  padding: 64px 0 56px;
  position: relative;
  color: #fff;
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 26px;
}
.breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.breadcrumb-nav a:hover {
  color: var(--accent-light);
}
.breadcrumb-nav .sep {
  opacity: 0.5;
}
.breadcrumb-nav .current {
  color: var(--accent-light);
}
.banner-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.4;
  max-width: 820px;
}
.article-section {
  padding: 60px 0;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 32px;
}
.article-main {
  min-width: 0;
}
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 40px;
}
.article-header {
  margin-bottom: 28px;
}
.article-meta-top {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}
.article-date,
.article-read {
  font-size: 13px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.article-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
  color: var(--text);
}
.article-summary {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.8;
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  background: var(--bg-soft);
  border-radius: 0 10px 10px 0;
}
.article-cover {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 30px;
  box-shadow: var(--shadow);
}
.article-cover img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.cover-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(15, 118, 110, 0.9);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}
.article-content {
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.9;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  margin: 34px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 26px 0 12px;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 20px 0 10px;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 18px 20px;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content blockquote {
  margin: 24px 0;
  padding: 18px 22px;
  background: var(--bg-soft);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  color: var(--text);
  font-style: italic;
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(15, 118, 110, 0.3);
}
.article-content a:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary-dark);
}
.article-content strong {
  font-weight: 700;
  color: var(--text);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--bg-soft);
  font-weight: 700;
  color: var(--text);
}
.article-content code {
  background: var(--bg-soft);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--primary);
}
.article-content pre {
  background: var(--text);
  color: #e2e8f0;
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 18px;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content hr {
  border: none;
  border-top: 2px solid var(--border);
  margin: 30px 0;
}
.content-empty {
  padding: 50px 30px;
  text-align: center;
  color: var(--text-weak);
  background: var(--bg-soft);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  margin-bottom: 20px;
}
.content-empty i {
  display: block;
  font-size: 30px;
  margin-bottom: 12px;
  color: var(--primary);
  opacity: 0.5;
}
.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding-top: 24px;
}
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  margin-right: 4px;
}
.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
}
.share-label {
  font-size: 14px;
  color: var(--text-weak);
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.share-btn:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
}
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}
.pager-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--transition);
}
.pager-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.pager-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
  transition: var(--transition);
}
.pager-item:hover .pager-icon {
  background: var(--primary);
  color: #fff;
}
.pager-text {
  display: flex;
  flex-direction: column;
  font-size: 13px;
  color: var(--text-weak);
}
.pager-text span:first-child {
  font-size: 12px;
}
.pager-text span:last-child {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.pager-next {
  justify-content: flex-end;
  text-align: right;
}
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.sidebar-guide {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border: none;
  text-align: center;
}
.sidebar-guide-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
.sidebar-guide h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.sidebar-guide p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: 18px;
}
.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-title i {
  color: var(--accent);
}
.sidebar-list li {
  margin-bottom: 12px;
}
.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  transition: var(--transition);
}
.sidebar-list a:hover {
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  transform: translateX(4px);
}
.list-index {
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.7;
}
.sidebar-cta {
  text-align: center;
  overflow: hidden;
}
.sidebar-cta .sidebar-img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.sidebar-cta h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.sidebar-cta p {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 16px;
}
.not-found-card {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
  padding: 60px 40px;
}
.not-found-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.08);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}
.not-found-card h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}
.not-found-card p {
  color: var(--text-weak);
  margin-bottom: 24px;
}
.media-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: block;
  height: 100%;
}
.media-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 118, 110, 0.2);
}
.media-cover {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.media-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.media-card:hover .media-cover img {
  transform: scale(1.06);
}
.media-body {
  padding: 20px 22px 22px;
}
.media-body .tag {
  margin-bottom: 10px;
}
.media-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.media-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}
.faq-section {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(15, 118, 110, 0.25);
}
.faq-item[open] {
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-content {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}
.cta-section {
  padding: 70px 0;
}
.cta-box {
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(15, 118, 110, 0.72));
}
.cta-box > * {
  position: relative;
  z-index: 1;
}
.cta-box h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 26px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 0;
}
.site-footer .logo-text {
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-3px);
}
.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}
.footer-links ul li a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-contact ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}
.footer-contact ul li i {
  width: 20px;
  color: var(--accent);
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .article-sidebar {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .sidebar-card {
    flex: 1;
    min-width: 240px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav-top {
    flex-wrap: wrap;
  }
  .search-box {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-tabs-scroll {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 14px;
    overflow: visible;
  }
  .nav-tabs-scroll.open {
    display: flex;
  }
  .nav-tab {
    padding: 10px 16px;
  }
  .article-card {
    padding: 24px;
  }
  .article-title {
    font-size: 26px;
  }
  .banner-title {
    font-size: 24px;
  }
  .page-banner {
    padding: 40px 0 36px;
  }
  .article-cover img {
    height: 260px;
  }
  .article-pager {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
}
@media (max-width: 520px) {
  .logo-text {
    font-size: 18px;
  }
  .article-card {
    padding: 20px 16px;
  }
  .article-title {
    font-size: 22px;
  }
  .section-title {
    font-size: 22px;
  }
  .article-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-sidebar {
    flex-direction: column;
  }
  .sidebar-card {
    width: 100%;
    min-width: 0;
  }
  .faq-item summary {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-content {
    padding: 0 18px 16px;
  }
  .not-found-card {
    padding: 40px 20px;
  }
}