/* roulang page: index */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        :root{
            --primary:#1a3a6b;
            --primary-light:#2d5aa7;
            --primary-dark:#12264a;
            --accent:#f59e0b;
            --accent-hover:#d97706;
            --bg-light:#f8fafc;
            --bg-dark:#0f172a;
            --text-dark:#1e293b;
            --text-body:#475569;
            --text-light:#94a3b8;
            --white:#ffffff;
            --border:#e2e8f0;
            --border-light:#f1f5f9;
            --shadow-sm:0 1px 3px rgba(0,0,0,0.06);
            --shadow-md:0 6px 18px rgba(0,0,0,0.08);
            --shadow-lg:0 12px 32px rgba(0,0,0,0.12);
            --radius:16px;
            --radius-sm:8px;
            --radius-lg:24px;
            --transition:all .3s ease;
            --font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif
        }
        html{scroll-behavior:smooth}
        body{font-family:var(--font-family);line-height:1.7;color:var(--text-body);background:var(--bg-light);-webkit-font-smoothing:antialiased}
        img{max-width:100%;display:block;height:auto}
        a{color:inherit;text-decoration:none;transition:var(--transition)}
        ul,ol{list-style:none}
        button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
        .container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
        .container-sm{max-width:960px;margin:0 auto;padding:0 24px}
        .section{padding:80px 0}
        .section-sm{padding:48px 0}
        .section-alt{background:var(--white)}
        .section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px}
        .section-heading .title{font-size:32px;font-weight:800;color:var(--text-dark);line-height:1.3;margin-bottom:6px}
        .section-heading .subtitle{font-size:15px;color:var(--text-light)}
        .section-heading .more-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
        .section-heading .more-link i{transition:var(--transition)}
        .section-heading .more-link:hover i{transform:translateX(4px)}
        .tag{display:inline-block;padding:4px 12px;font-size:12px;font-weight:600;border-radius:20px;line-height:1.5;letter-spacing:.02em}
        .tag-accent{background:rgba(245,158,11,0.12);color:var(--accent-hover)}
        .tag-blue{background:rgba(26,58,107,0.08);color:var(--primary)}
        .tag-green{background:rgba(16,185,129,0.12);color:#0d9668}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;line-height:1.4;border:2px solid transparent;cursor:pointer;transition:var(--transition);text-align:center}
        .btn:active{transform:scale(0.97)}
        .btn-primary{background:var(--primary);color:var(--white);box-shadow:0 4px 14px rgba(26,58,107,0.25)}
        .btn-primary:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 8px 20px rgba(26,58,107,0.3)}
        .btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(245,158,11,0.3)}
        .btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,158,11,0.35)}
        .btn-outline{border-color:rgba(255,255,255,0.8);color:#fff;background:transparent}
        .btn-outline:hover{background:rgba(255,255,255,0.12);border-color:#fff;transform:translateY(-2px)}
        .btn-light{background:#fff;color:var(--primary);box-shadow:var(--shadow-sm)}
        .btn-light:hover{background:var(--bg-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
        .btn-lg{padding:16px 38px;font-size:16px;border-radius:12px}
        .btn-block{width:100%;justify-content:center}
        .bg-cover{background-size:cover;background-position:center;background-repeat:no-repeat}
        .text-center{text-align:center}
        .text-muted{color:var(--text-light)}
        .text-primary{color:var(--primary)}
        .text-accent{color:var(--accent-hover)}
        .flex{display:flex;align-items:center}
        .flex-wrap{display:flex;flex-wrap:wrap}
        .justify-between{display:flex;align-items:center;justify-content:space-between}
        .mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mt-8{margin-top:32px}.mt-10{margin-top:40px}
        .mb-1{margin-bottom:4px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mb-8{margin-bottom:32px}
        /* ===== 顶部快讯条 ===== */
        .ticker-bar{background:var(--bg-dark);color:rgba(255,255,255,0.75);font-size:13px;padding:8px 0;overflow:hidden}
        .ticker-inner{display:flex;align-items:center;gap:24px;white-space:nowrap}
        .ticker-inner .ticker-label{display:flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;letter-spacing:.05em}
        .ticker-inner .ticker-text{overflow:hidden;text-overflow:ellipsis;max-width:100%}
        .ticker-inner .ticker-text span{margin-right:24px}
        .ticker-inner .ticker-text span i{margin-right:6px;color:var(--accent)}
        /* ===== 导航 ===== */
        .site-header{background:var(--white);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:200;box-shadow:var(--shadow-sm)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
        .brand{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.02em;display:flex;align-items:center;gap:8px;line-height:1.3}
        .brand i{color:var(--accent);font-size:24px}
        .nav-menu{display:flex;align-items:center;gap:4px}
        .nav-link{padding:10px 18px;font-size:15px;font-weight:500;color:var(--text-body);border-radius:var(--radius-sm);position:relative;transition:var(--transition)}
        .nav-link:hover{color:var(--primary);background:rgba(26,58,107,0.05)}
        .nav-link.active{color:var(--primary);font-weight:700}
        .nav-link.active::after{content:'';position:absolute;bottom:2px;left:18px;right:18px;height:2px;background:var(--accent);border-radius:2px}
        .nav-cta{margin-left:16px;padding:9px 22px;font-size:14px}
        .nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;background:transparent;border:none;cursor:pointer;border-radius:var(--radius-sm);padding:8px}
        .nav-toggle span{width:22px;height:2px;background:var(--text-dark);border-radius:2px;transition:var(--transition);margin:0 auto}
        .nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
        .nav-toggle.active span:nth-child(2){opacity:0}
        .nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
        /* ===== Hero ===== */
        .hero{position:relative;padding:120px 0 100px;color:#fff;text-align:center}
        .hero .container{position:relative;z-index:2}
        .hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,0.9) 0%,rgba(26,58,107,0.75) 50%,rgba(15,23,42,0.85) 100%);z-index:1}
        .hero .hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.2);padding:8px 20px;border-radius:40px;font-size:13px;font-weight:500;letter-spacing:.05em;margin-bottom:24px}
        .hero .hero-badge i{color:var(--accent)}
        .hero h1{font-size:52px;font-weight:900;line-height:1.2;letter-spacing:.02em;margin-bottom:20px;text-shadow:0 2px 20px rgba(0,0,0,0.3)}
        .hero .hero-subtitle{font-size:18px;color:rgba(255,255,255,0.8);max-width:680px;margin:0 auto 32px;line-height:1.8}
        .hero-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:50px}
        .hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:800px;margin:0 auto;padding:24px 32px;background:rgba(255,255,255,0.08);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-lg)}
        .hero-stat{text-align:center}
        .hero-stat .number{font-size:30px;font-weight:800;color:#fff;display:block;line-height:1.2}
        .hero-stat .label{font-size:13px;color:rgba(255,255,255,0.7);margin-top:4px}
        /* ===== 通知条 ===== */
        .notice-bar{background:var(--accent);padding:12px 0;color:#fff;font-size:14px}
        .notice-inner{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
        .notice-inner i{font-size:16px}
        .notice-inner a{font-weight:700;text-decoration:underline}
        .notice-inner a:hover{text-decoration:none}
        /* ===== 核心功能 ===== */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
        .feature-card{background:var(--white);padding:36px 30px;border-radius:var(--radius);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden}
        .feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
        .feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
        .feature-card:hover::before{transform:scaleX(1)}
        .feature-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px;background:rgba(26,58,107,0.08);color:var(--primary);transition:var(--transition)}
        .feature-card:hover .feature-icon{background:var(--primary);color:#fff;transform:scale(1.05) rotate(-3deg)}
        .feature-card h3{font-size:19px;font-weight:700;color:var(--text-dark);margin-bottom:10px}
        .feature-card p{font-size:14px;line-height:1.75}
        /* ===== 分类入口 ===== */
        .categories-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
        .category-card{border-radius:var(--radius-lg);overflow:hidden;position:relative;min-height:280px;display:flex;align-items:flex-end;box-shadow:var(--shadow-md);transition:var(--transition)}
        .category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
        .category-card::before{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(15,23,42,0.82) 0%,rgba(15,23,42,0.35) 55%,rgba(15,23,42,0.1) 100%);z-index:1}
        .category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
        .category-card:hover img{transform:scale(1.06)}
        .category-card .category-content{position:relative;z-index:2;padding:36px 32px;width:100%}
        .category-card .tag{margin-bottom:12px;display:inline-block}
        .category-card h3{color:#fff;font-size:26px;font-weight:800;margin-bottom:8px}
        .category-card p{color:rgba(255,255,255,0.8);font-size:14px;margin-bottom:16px;max-width:85%}
        .category-card .category-link{display:inline-flex;align-items:center;gap:8px;color:#fff;font-weight:600;font-size:14px;padding:8px 16px;background:rgba(255,255,255,0.18);border-radius:30px;backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,0.25)}
        .category-card .category-link:hover{background:var(--accent);border-color:var(--accent);transform:translateX(4px)}
        /* ===== 新闻资讯 ===== */
        .news-section{background:var(--white)}
        .news-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
        .news-featured{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative;transition:var(--transition)}
        .news-featured:hover{box-shadow:var(--shadow-lg)}
        .news-featured img{width:100%;height:320px;object-fit:cover}
        .news-featured .news-featured-content{padding:32px}
        .news-featured h3{font-size:24px;font-weight:800;color:var(--text-dark);line-height:1.4;margin-bottom:12px}
        .news-featured p{font-size:14px;margin-bottom:20px;line-height:1.8}
        .news-list-wrap{background:var(--bg-light);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border-light)}
        .news-list-wrap .section-heading{margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--border)}
        .news-list{display:flex;flex-direction:column;gap:4px}
        .news-item{position:relative;transition:var(--transition)}
        .news-item-link{display:flex;align-items:center;gap:14px;padding:14px 12px;border-radius:12px;transition:var(--transition)}
        .news-item-link:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateX(4px)}
        .news-item-link .news-cat{flex-shrink:0;font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;background:rgba(26,58,107,0.08);color:var(--primary)}
        .news-item-link .news-item-title{flex:1;font-size:15px;font-weight:500;color:var(--text-dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .news-item-link .news-item-date{flex-shrink:0;font-size:12px;color:var(--text-light)}
        .news-empty{text-align:center;padding:40px 0;color:var(--text-light)}
        /* ===== 数据统计 ===== */
        .stats-section{background:var(--bg-dark);padding:80px 0;position:relative;overflow:hidden}
        .stats-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,58,107,0.5) 0%,rgba(15,23,42,0.85) 100%)}
        .stats-section .container{position:relative;z-index:1}
        .stats-heading{text-align:center;margin-bottom:50px}
        .stats-heading .tag{background:rgba(245,158,11,0.15);color:var(--accent)}
        .stats-heading h2{color:#fff;font-size:32px;font-weight:800;margin-top:12px}
        .stats-heading p{color:rgba(255,255,255,0.6);font-size:15px;margin-top:8px}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
        .stat-block{background:rgba(255,255,255,0.06);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius);padding:40px 24px;text-align:center;transition:var(--transition)}
        .stat-block:hover{background:rgba(255,255,255,0.12);transform:translateY(-4px)}
        .stat-block .stat-icon{font-size:28px;color:var(--accent);margin-bottom:12px}
        .stat-block .stat-number{font-size:36px;font-weight:800;color:#fff;line-height:1.2}
        .stat-block .stat-label{font-size:14px;color:rgba(255,255,255,0.65);margin-top:6px}
        /* ===== 专题推荐 ===== */
        .featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
        .featured-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition)}
        .featured-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
        .featured-card .card-thumb{position:relative;overflow:hidden;height:180px}
        .featured-card .card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
        .featured-card:hover .card-thumb img{transform:scale(1.05)}
        .featured-card .card-thumb .tag{position:absolute;top:16px;left:16px;z-index:2}
        .featured-card .card-body{padding:24px 20px 26px}
        .featured-card .card-body h3{font-size:18px;font-weight:700;color:var(--text-dark);line-height:1.45;margin-bottom:8px}
        .featured-card .card-body p{font-size:13px;color:var(--text-light);line-height:1.7;margin-bottom:14px}
        .featured-card .card-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-light);padding-top:14px;border-top:1px solid var(--border-light)}
        .featured-card .card-meta .read-more{color:var(--primary);font-weight:600}
        /* ===== 使用流程 ===== */
        .process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:step}
        .process-step{background:var(--white);border-radius:var(--radius);border:1px solid var(--border-light);padding:36px 24px;text-align:center;position:relative;box-shadow:var(--shadow-sm);transition:var(--transition)}
        .process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
        .process-step .step-number{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;box-shadow:0 4px 12px rgba(26,58,107,0.3)}
        .process-step .step-icon{font-size:32px;color:var(--accent);margin-bottom:10px}
        .process-step h3{font-size:17px;font-weight:700;color:var(--text-dark);margin-bottom:8px}
        .process-step p{font-size:13px;line-height:1.7;color:var(--text-light)}
        /* ===== FAQ ===== */
        .faq-wrap{max-width:860px;margin:0 auto}
        .faq-item{background:var(--white);border:1px solid var(--border-light);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:var(--transition)}
        .faq-item:hover{border-color:var(--border);box-shadow:var(--shadow-sm)}
        .faq-item summary{list-style:none;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-size:16px;font-weight:600;color:var(--text-dark)}
        .faq-item summary::-webkit-details-marker{display:none}
        .faq-item summary i{color:var(--accent);transition:transform .3s ease;font-size:14px}
        .faq-item[open] summary i{transform:rotate(180deg)}
        .faq-item[open] summary{border-bottom:1px solid var(--border-light)}
        .faq-item .faq-answer{padding:20px 28px;font-size:14px;line-height:1.85;color:var(--text-body)}
        /* ===== CTA ===== */
        .cta{position:relative;padding:90px 0;color:#fff;text-align:center}
        .cta::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,58,107,0.85) 0%,rgba(15,23,42,0.9) 100%);z-index:1}
        .cta .container{position:relative;z-index:2}
        .cta h2{font-size:34px;font-weight:800;margin-bottom:14px}
        .cta p{font-size:16px;color:rgba(255,255,255,0.75);max-width:640px;margin:0 auto 36px}
        .cta .cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
        .cta .cta-buttons .btn-light:hover{background:var(--bg-light);color:var(--primary-dark)}
        /* ===== 页脚 ===== */
        .site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:70px 0 0}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,0.08)}
        .footer-brand .brand{color:#fff;font-size:22px;margin-bottom:16px;display:block}
        .footer-brand .brand i{color:var(--accent)}
        .footer-brand p{font-size:14px;line-height:1.85;max-width:340px;color:rgba(255,255,255,0.55)}
        .footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
        .footer-col ul li{margin-bottom:10px}
        .footer-col ul li a{font-size:14px;color:rgba(255,255,255,0.55);transition:var(--transition)}
        .footer-col ul li a:hover{color:var(--accent);padding-left:4px}
        .footer-col ul li i{width:20px;margin-right:6px;color:var(--accent)}
        .footer-bottom{padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,0.4)}
        .footer-bottom .social-links{display:flex;gap:10px}
        .footer-bottom .social-links a{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.08);color:rgba(255,255,255,0.6);transition:var(--transition);font-size:14px}
        .footer-bottom .social-links a:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
        /* ===== 响应式 ===== */
        @media(max-width:1024px){
            .section{padding:64px 0}
            .hero{padding:100px 0 80px}
            .hero h1{font-size:42px}
            .news-layout{grid-template-columns:1fr;gap:40px}
            .features-grid,.featured-grid{grid-template-columns:repeat(2,1fr)}
            .process-steps{grid-template-columns:repeat(2,1fr)}
            .stats-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .section{padding:52px 0}
            .container{padding:0 20px}
            .header-inner{height:64px}
            .brand{font-size:17px}
            .nav-menu{position:fixed;top:64px;left:0;right:0;background:var(--white);flex-direction:column;align-items:flex-start;padding:16px 24px 24px;box-shadow:0 8px 24px rgba(0,0,0,0.08);border-bottom:1px solid var(--border-light);transform:translateY(-140%);opacity:0;pointer-events:none;transition:all .35s ease}
            .nav-menu.active{transform:translateY(0);opacity:1;pointer-events:auto}
            .nav-link{width:100%;padding:12px 8px;border-radius:8px}
            .nav-link.active::after{display:none}
            .nav-cta{display:none}
            .nav-toggle{display:flex}
            .hero{padding:80px 0 70px}
            .hero h1{font-size:34px;line-height:1.25}
            .hero .hero-subtitle{font-size:15px}
            .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px;padding:20px}
            .hero-stat .number{font-size:24px}
            .section-heading{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:28px}
            .section-heading .title{font-size:26px}
            .features-grid,.featured-grid,.process-steps,.stats-grid{grid-template-columns:1fr}
            .categories-grid{grid-template-columns:1fr}
            .category-card{min-height:220px}
            .news-list-wrap{padding:24px}
            .news-item-link{flex-wrap:wrap;gap:8px}
            .news-item-link .news-item-title{white-space:normal}
            .news-item-link .news-item-date{width:100%;padding-left:12px}
            .footer-grid{grid-template-columns:1fr;gap:32px}
            .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
            .cta h2{font-size:26px}
            .cta{padding:64px 0}
        }
        @media(max-width:520px){
            .container{padding:0 16px}
            .brand{font-size:15px}
            .hero h1{font-size:28px}
            .hero-stat .number{font-size:20px}
            .section-heading .title{font-size:24px}
            .feature-card{padding:28px 20px}
            .news-featured img{height:200px}
            .news-featured .news-featured-content{padding:24px 20px}
            .news-featured h3{font-size:20px}
            .process-step{padding:30px 16px}
            .btn-lg{padding:14px 28px}
        }

/* roulang page: category1 */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #e0e7ff;
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --dark-bg: #0f172a;
    --dark-bg-2: #1e293b;
    --bg: #f8fafc;
    --bg-alt: #eef2ff;
    --text: #1e293b;
    --text-weak: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --white: #ffffff;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 48px rgba(15, 23, 42, 0.12);
    --transition: all 0.3s ease;
    --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    -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 {
    font-family: inherit;
    border: none;
    outline: none;
}

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

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 16px rgba(15, 23, 42, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text);
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.brand i {
    color: var(--primary);
    font-size: 1.4rem;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    position: relative;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-weak);
    white-space: nowrap;
    transition: var(--transition);
}

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

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
    background: var(--primary-light);
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 4px;
    background: var(--primary);
}

.nav-cta {
    white-space: nowrap;
    padding: 10px 22px;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: 50px;
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
    color: #fff;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--text);
    border-radius: 4px;
    transition: var(--transition);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}

/* ========== Hero Banner ========== */
.cat-hero {
    position: relative;
    padding: 110px 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
    overflow: hidden;
}

.cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 27, 75, 0.78) 55%, rgba(99, 102, 241, 0.35) 100%);
}

.cat-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.cat-hero .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: 24px;
    color: #e0e7ff;
}

.cat-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.cat-hero h1 span {
    color: var(--accent);
}

.cat-hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 620px;
}

.cat-hero .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cat-hero .hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 44px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.cat-hero .stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cat-hero .stat-num {
    font-size: 1.9rem;
    font-weight: 800;
    color: #fff;
}

.cat-hero .stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ========== Page Sections ========== */
.section {
    padding: 90px 0;
}

.section-alt {
    background: var(--bg-alt);
}

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

.section-header .section-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 14px;
    color: var(--text);
}

.section-header p {
    color: var(--text-weak);
    font-size: 1rem;
    line-height: 1.8;
}

/* ========== Category Overview ========== */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.overview-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 32px 26px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.overview-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.overview-card .ov-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 1.6rem;
    color: var(--primary);
    transition: var(--transition);
}

.overview-card:hover .ov-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
}

.overview-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.overview-card p {
    font-size: 0.88rem;
    color: var(--text-weak);
    line-height: 1.7;
}

/* ========== Featured Guides ========== */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

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

.guide-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.guide-card-img {
    position: relative;
    height: 230px;
    overflow: hidden;
}

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

.guide-card:hover .guide-card-img img {
    transform: scale(1.05);
}

.guide-card-img .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: #fff;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.guide-card-body {
    padding: 24px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.guide-card-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text);
}

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

.guide-card-body p {
    font-size: 0.92rem;
    color: var(--text-weak);
    line-height: 1.7;
    flex: 1;
}

.guide-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.82rem;
    color: var(--text-light);
    padding-top: 12px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
}

.guide-meta i {
    margin-right: 4px;
}

.guide-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: 6px;
    transition: var(--transition);
}

.guide-read-more:hover {
    gap: 12px;
}

/* ========== Ranking List ========== */
.rank-section {
    background: var(--dark-bg);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.rank-section::before {
    content: "";
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.15);
    filter: blur(60px);
}

.rank-section .section-header h2 {
    color: #fff;
}

.rank-section .section-header p {
    color: rgba(255, 255, 255, 0.7);
}

.rank-section .section-tag {
    background: rgba(255, 255, 255, 0.12);
    color: #a5b4fc;
}

.rank-list {
    max-width: 860px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.rank-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 14px;
    transition: var(--transition);
    cursor: pointer;
}

.rank-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateX(8px);
    border-color: rgba(165, 180, 252, 0.4);
}

.rank-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    min-width: 42px;
    text-align: center;
    font-style: italic;
}

.rank-item:nth-child(1) .rank-num,
.rank-item:nth-child(2) .rank-num,
.rank-item:nth-child(3) .rank-num {
    color: var(--accent);
}

.rank-info {
    flex: 1;
}

.rank-info h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.rank-info p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.rank-tag {
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 0.78rem;
    background: rgba(99, 102, 241, 0.25);
    color: #a5b4fc;
    white-space: nowrap;
}

.rank-hot {
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 0.78rem;
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    white-space: nowrap;
}

/* ========== Topic Tags ========== */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    max-width: 820px;
    margin: 0 auto;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 50px;
    background: var(--white);
    border: 1px solid var(--border);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.tag-item i {
    color: var(--primary);
    font-size: 0.85rem;
}

.tag-item:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.tag-item:hover i {
    color: #fff;
}

.tag-item.hot {
    border-color: var(--accent);
    background: var(--accent-light);
}

.tag-item.hot i {
    color: var(--accent);
}

/* ========== Steps Section ========== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    position: relative;
}

.steps-grid::before {
    content: "";
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
    z-index: 0;
}

.step-card {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 36px 26px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.step-num {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 18px;
    background: var(--primary);
    color: #fff;
    font-size: 1.4rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.step-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.step-card p {
    font-size: 0.9rem;
    color: var(--text-weak);
    line-height: 1.7;
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 26px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
}

.faq-question i {
    color: var(--primary);
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

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

.faq-answer-inner {
    padding: 0 26px 22px;
    color: var(--text-weak);
    font-size: 0.94rem;
    line-height: 1.85;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin-top: 0;
}

.faq-answer-inner p {
    margin-top: 4px;
}

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

.cta-section::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
}

.cta-section::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -40px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
    color: #fff;
}

.cta-inner h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-inner p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 32px;
    line-height: 1.8;
}

.cta-inner .btn-white {
    background: #fff;
    color: var(--primary);
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-inner .btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    color: var(--primary-dark);
}

/* ========== Footer ========== */
.site-footer {
    background: var(--dark-bg);
    color: #cbd5e1;
    padding: 70px 0 0;
}

.site-footer .brand {
    color: #fff;
}

.site-footer .brand i {
    color: #818cf8;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.8;
    margin-top: 16px;
    max-width: 340px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    border-radius: 4px;
    background: var(--primary);
}

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

.footer-col ul a {
    font-size: 0.9rem;
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: #818cf8;
    padding-left: 4px;
}

.footer-col ul i {
    font-size: 0.7rem;
    color: #64748b;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px 0;
    font-size: 0.85rem;
    color: #64748b;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: #94a3b8;
    font-size: 1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-4px);
}

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

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

    .steps-grid {
        gap: 20px;
    }

    .steps-grid::before {
        display: none;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .site-header .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 24px rgba(15, 23, 42, 0.1);
        display: none;
        z-index: 999;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .nav-menu .nav-link.active::after {
        display: none;
    }

    .nav-link.active {
        background: var(--primary-light);
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .cat-hero {
        padding: 70px 0;
        background-attachment: scroll;
    }

    .cat-hero .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .cat-hero .stat-num {
        font-size: 1.5rem;
    }

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

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

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

    .overview-card {
        padding: 24px 18px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

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

    .rank-item {
        flex-wrap: wrap;
        gap: 12px;
        padding: 16px 18px;
    }

    .rank-info {
        width: 100%;
        order: 3;
    }

    .rank-tag, .rank-hot {
        margin-left: auto;
    }

    .section-header {
        margin-bottom: 36px;
    }
}

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

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

    .cat-hero h1 {
        font-size: 1.8rem;
    }

    .cat-hero p {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .cat-hero .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .guide-card-body {
        padding: 18px;
    }

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

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

    .footer-bottom {
        font-size: 0.78rem;
    }
}

/* roulang page: category2 */
/* ========== Design Variables ========== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #3b82f6;
            --primary-soft: #eff6ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-soft: #fffbeb;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-deep: #0f172a;
            --bg-deep-2: #1e293b;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

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

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 12px rgba(15, 23, 42, 0.04);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 40px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            white-space: nowrap;
            letter-spacing: 0.5px;
            transition: opacity var(--transition);
        }

        .brand i {
            font-size: 24px;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .brand:hover {
            opacity: 0.85;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 999px;
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

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

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }

        .nav-cta {
            padding: 10px 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--bg-card);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: border-color var(--transition), background var(--transition);
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.28);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.36);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.24);
        }

        .btn-outline {
            border-color: var(--border);
            color: var(--text-body);
            background: var(--bg-card);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
        }

        .btn-light:hover {
            background: var(--primary-soft);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.16);
            color: var(--primary-dark);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 14px;
        }

        /* ========== Page Banner / Hero ========== */
        .page-banner {
            position: relative;
            padding: 168px 0 90px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #1d4ed8 100%);
            color: #fff;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.16);
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition);
        }

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

        .breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
        }

        .page-banner h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: #fff;
        }

        .page-banner h1 span {
            color: #fbbf24;
        }

        .page-banner .banner-desc {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 620px;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .banner-tags .tag {
            font-size: 13px;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(6px);
        }

        /* ========== Section Common ========== */
        .section {
            padding: 100px 0;
        }

        .section-alt {
            background: var(--bg-card);
        }

        .section-deep {
            background: var(--bg-deep);
            color: #fff;
        }

        .section-head {
            margin-bottom: 56px;
            max-width: 720px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.9;
        }

        /* ========== Steps Section ========== */
        .steps-section {
            padding: 100px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 48px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .step-number {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 50px;
            font-weight: 800;
            color: rgba(37, 99, 235, 0.08);
            line-height: 1;
        }

        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 24px;
            transition: all var(--transition);
        }

        .step-card:hover .step-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.06);
        }

        .step-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 14px;
        }

        .step-card p {
            font-size: 14px;
            line-height: 1.85;
            color: var(--text-weak);
            margin-bottom: 16px;
        }

        .step-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

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

        /* ========== Course List Section ========== */
        .course-section {
            padding: 100px 0;
            background: var(--bg-body);
        }

        .course-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .course-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .course-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: default;
        }

        .course-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateX(6px);
        }

        .course-index {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .course-item:nth-child(2) .course-index {
            background: var(--accent-soft);
            color: var(--accent-dark);
        }

        .course-item:nth-child(3) .course-index {
            background: #f0fdf4;
            color: #16a34a;
        }

        .course-item:nth-child(4) .course-index {
            background: #fef2f2;
            color: #dc2626;
        }

        .course-item-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .course-item-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .course-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 12px;
            color: var(--text-weak);
        }

        .course-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .course-feature {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 480px;
        }

        .course-feature img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .course-feature-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.35) 50%, rgba(15, 23, 42, 0.1) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 40px;
        }

        .course-feature-overlay .tag {
            align-self: flex-start;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .course-feature-overlay h3 {
            color: #fff;
            font-size: 24px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .course-feature-overlay p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            line-height: 1.85;
        }

        /* ========== Path Timeline Section ========== */
        .path-section {
            padding: 100px 0;
            background: var(--bg-deep);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .path-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
            border-radius: 50%;
        }

        .path-section .section-head h2 {
            color: #fff;
        }

        .path-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .path-section .section-eyebrow {
            background: rgba(255, 255, 255, 0.12);
            color: #93c5fd;
        }

        .timeline {
            margin-top: 56px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .timeline-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
            position: relative;
        }

        .timeline-item:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-6px);
        }

        .timeline-dot {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            margin-bottom: 18px;
        }

        .timeline-item.step-2 .timeline-dot {
            background: #f59e0b;
        }

        .timeline-item.step-3 .timeline-dot {
            background: #10b981;
        }

        .timeline-item.step-4 .timeline-dot {
            background: #8b5cf6;
        }

        .timeline-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 8px;
        }

        .timeline-item h3 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .timeline-item p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
        }

        .path-stats {
            margin-top: 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .stat-card .num {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
        }

        .stat-card .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 100px 0;
            background: var(--bg-card);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            background: var(--bg-card);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.25);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 24px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition);
        }

        .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: 14px;
            color: var(--primary);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-item .faq-answer {
            padding: 0 28px 24px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.85;
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 90px 0;
            position: relative;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
            border-radius: var(--radius-xl);
            padding: 64px 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(37, 99, 235, 0.35);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -70px;
            left: 20%;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-text {
            position: relative;
            z-index: 2;
            flex: 1;
        }

        .cta-text h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 1.8;
            max-width: 520px;
        }

        .cta-actions {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 14px;
            flex-shrink: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr;
            gap: 56px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand {
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand .brand i {
            background: rgba(255, 255, 255, 0.12);
            color: #93c5fd;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 22px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
        }

        .footer-col ul li a i {
            font-size: 10px;
            color: var(--primary-light);
            transition: transform var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-col ul li a:hover i {
            transform: translateX(2px);
        }

        .footer-bottom {
            padding: 28px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 13px;
        }

        .social-links {
            display: flex;
            gap: 10px;
        }

        .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            transition: all var(--transition);
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .header-inner {
                gap: 20px;
            }

            .nav-link {
                padding: 10px 14px;
                font-size: 14px;
            }

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

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

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

            .course-layout {
                grid-template-columns: 1fr;
            }

            .course-feature {
                min-height: 380px;
            }

            .cta-box {
                padding: 48px 40px;
                flex-direction: column;
                text-align: center;
            }

            .cta-text p {
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }

            .header-inner {
                height: 64px;
            }

            .brand {
                font-size: 17px;
            }

            .brand i {
                width: 38px;
                height: 38px;
                font-size: 19px;
                border-radius: 9px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--border-light);
                z-index: 999;
            }

            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                padding: 14px 18px;
                font-size: 16px;
                border-radius: 10px;
                text-align: center;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .page-banner {
                padding: 130px 0 70px;
            }

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

            .page-banner .banner-desc {
                font-size: 15px;
            }

            .section {
                padding: 72px 0;
            }

            .steps-section,
            .course-section,
            .path-section,
            .faq-section {
                padding: 72px 0;
            }

            .section-head {
                margin-bottom: 40px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .cta-box {
                padding: 40px 28px;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }
        }

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

            .brand {
                font-size: 15px;
            }

            .brand i {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .page-banner {
                padding: 120px 0 60px;
            }

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

            .page-banner .banner-desc {
                font-size: 14px;
            }

            .banner-tags {
                gap: 8px;
            }

            .banner-tags .tag {
                font-size: 12px;
                padding: 5px 12px;
            }

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

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

            .path-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card .num {
                font-size: 28px;
            }

            .course-item {
                flex-direction: column;
                gap: 12px;
            }

            .course-index {
                width: 38px;
                height: 38px;
                font-size: 14px;
            }

            .course-feature {
                min-height: 300px;
            }

            .course-feature-overlay {
                padding: 24px;
            }

            .course-feature-overlay h3 {
                font-size: 20px;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-item .faq-answer {
                padding: 0 20px 20px;
                font-size: 14px;
            }

            .cta-box {
                border-radius: var(--radius-lg);
            }

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

            .site-footer {
                padding-top: 50px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #ffffff;
            --bg-light: #f1f5f9;
            --bg-dark: #0f172a;
            --bg-dark-2: #1e293b;
            --text: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --space-section: 80px;
            --space-inner: 48px;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul, ol {
            list-style: none;
        }
        button, input {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            background: #d97706;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.1);
            color: #fff;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 17px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            border: 1px solid rgba(37, 99, 235, 0.2);
        }
        .badge-accent {
            background: rgba(245, 158, 11, 0.1);
            color: #b45309;
            border-color: rgba(245, 158, 11, 0.2);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            box-shadow: 0 1px 10px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
        }
        .brand i {
            color: var(--primary);
            font-size: 24px;
        }
        .brand:hover {
            color: var(--primary-dark);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            padding: 10px 18px;
            margin: 0 2px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.25s;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.1);
        }
        .nav-cta {
            flex-shrink: 0;
            padding: 10px 22px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 88px 0 72px;
            color: #fff;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.2);
            filter: blur(60px);
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.25s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }
        .article-hero-content {
            max-width: 860px;
        }
        .article-hero .badge {
            margin-bottom: 16px;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.2);
        }
        .article-hero h1 {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            max-width: 720px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-meta i {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Article Layout ===== */
        .article-section {
            padding: var(--space-section) 0;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            min-width: 0;
        }
        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: #334155;
        }
        .article-content > * + * {
            margin-top: 20px;
        }
        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin: 40px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-content h4 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            margin: 24px 0 10px;
        }
        .article-content p {
            margin: 16px 0;
            line-height: 1.9;
        }
        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }
        .article-content a:hover {
            border-bottom-color: var(--primary);
        }
        .article-content img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            margin: 28px 0;
            max-width: 100%;
        }
        .article-content blockquote {
            margin: 28px 0;
            padding: 20px 24px;
            background: var(--bg-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-content blockquote p {
            margin: 0;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0;
            padding-left: 4px;
        }
        .article-content ul li {
            position: relative;
            padding-left: 24px;
            margin: 8px 0;
        }
        .article-content ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 12px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            opacity: 0.6;
        }
        .article-content ol {
            counter-reset: articleOl;
        }
        .article-content ol li {
            counter-increment: articleOl;
            position: relative;
            padding-left: 30px;
            margin: 8px 0;
        }
        .article-content ol li::before {
            content: counter(articleOl);
            position: absolute;
            left: 0;
            top: 2px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .article-content pre {
            background: var(--bg-dark);
            color: #f1f5f9;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.7;
        }
        .article-content code {
            font-family: "SF Mono", "Fira Code", Consolas, monospace;
            font-size: 0.9em;
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content table th,
        .article-content table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
        .article-content table th {
            background: var(--bg-light);
            font-weight: 700;
            color: var(--text);
        }
        .article-content table tr:last-child td {
            border-bottom: none;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--bg-light);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.25s;
        }
        .article-tags .tag:hover {
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: 96px;
        }
        .sidebar-widget {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s;
        }
        .sidebar-widget:hover {
            box-shadow: var(--shadow-md);
        }
        .widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .widget-title i {
            color: var(--primary);
            font-size: 16px;
        }
        .widget-list li {
            margin-bottom: 14px;
        }
        .widget-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: background 0.25s;
        }
        .widget-list a:hover {
            background: var(--bg-light);
        }
        .widget-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
            margin-top: 8px;
        }
        .widget-text {
            display: flex;
            flex-direction: column;
            gap: 4px;
            min-width: 0;
        }
        .widget-title-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .widget-date {
            font-size: 12px;
            color: var(--text-light);
        }
        .widget-cats {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .widget-cat {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            transition: all 0.3s;
            border: 1px solid transparent;
        }
        .widget-cat:hover {
            background: rgba(37, 99, 235, 0.06);
            border-color: rgba(37, 99, 235, 0.2);
            color: var(--primary);
            transform: translateX(4px);
        }
        .widget-cat i:first-child {
            color: var(--primary);
            font-size: 18px;
        }
        .widget-cat i:last-child {
            margin-left: auto;
            font-size: 13px;
            color: var(--text-light);
        }

        /* ===== Empty State ===== */
        .empty-section {
            padding: var(--space-section) 0;
            background: var(--bg);
        }
        .empty-state {
            max-width: 620px;
            margin: 0 auto;
            text-align: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 64px 40px;
            box-shadow: var(--shadow-md);
        }
        .empty-state i {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 24px;
            display: block;
        }
        .empty-state h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
        }
        .empty-state p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.8;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: var(--space-section) 0;
            background: linear-gradient(180deg, #fff 0%, var(--bg-light) 100%);
            border-top: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: rgba(37, 99, 235, 0.08);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 10px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.35s;
            display: flex;
            flex-direction: column;
            color: var(--text);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.2);
            color: var(--text);
        }
        .card-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-cover img {
            transform: scale(1.06);
        }
        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 42, 0.4) 100%);
        }
        .card-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 1;
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            backdrop-filter: blur(8px);
        }
        .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.25s;
        }
        .related-card:hover .card-body h3 {
            color: var(--primary);
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .card-date {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
        }
        .card-date i {
            font-size: 12px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg);
        }
        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            transition: box-shadow 0.3s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.15);
        }
        .faq-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .faq-item h3 i {
            color: var(--primary);
            font-size: 15px;
            flex-shrink: 0;
            margin-top: 3px;
        }
        .faq-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-left: 27px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: var(--space-section) 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            text-align: center;
            color: #fff;
        }
        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .cta-buttons {
            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: 72px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .brand {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .footer-brand .brand i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul a i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.3);
            transition: transform 0.25s;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-col ul a:hover i {
            transform: translateX(2px);
            color: var(--accent);
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }
        .social-links {
            display: flex;
            gap: 12px;
        }
        .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            transition: all 0.3s;
        }
        .social-links a:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: translateY(-2px);
        }

        /* ===== Section Divider ===== */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
            max-width: 1280px;
            margin: 0 auto;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 20px;
            }
            .sidebar-widget {
                flex: 1 1 280px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 56px;
                --space-inner: 32px;
            }
            .container {
                padding: 0 20px;
            }
            .header-inner {
                height: 64px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                padding: 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                align-items: stretch;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .nav-link {
                padding: 14px 16px;
                border-radius: var(--radius-sm);
            }
            .article-hero {
                padding: 56px 0 48px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-content {
                font-size: 16px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 15px;
            }
            .brand {
                font-size: 17px;
            }
            .brand i {
                font-size: 20px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-tags {
                gap: 8px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .faq-item {
                padding: 20px;
            }
            .empty-state {
                padding: 40px 24px;
            }
            .empty-state h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }