/* roulang page: index */
:root {
            --primary: #6c3ce0;
            --primary-dark: #5529b8;
            --primary-light: #8b5cf6;
            --accent: #ff6b3d;
            --accent-hover: #e85a2f;
            --bg: #f8f9fc;
            --bg-alt: #f0f2f8;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text: #1e1e2d;
            --text-secondary: #5a5a72;
            --text-muted: #8a8a9e;
            --text-light: #b0b0c0;
            --border: #e4e6f0;
            --border-light: #eeeef4;
            --shadow-sm: 0 1px 3px rgba(26,26,46,0.06);
            --shadow-md: 0 4px 16px rgba(26,26,46,0.10);
            --shadow-lg: 0 12px 40px rgba(26,26,46,0.14);
            --shadow-xl: 0 20px 60px rgba(26,26,46,0.18);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
            --glass-bg: rgba(255,255,255,0.72);
            --glass-border: rgba(255,255,255,0.55);
            --glass-shadow: 0 2px 20px rgba(26,26,46,0.07);
            --glass-blur: blur(16px);
        }

        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{font-family:var(--font-sans);font-size:16px;line-height:1.65;color:var(--text);background:var(--bg);overflow-x:hidden;min-height:100vh}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition)}
        button{cursor:pointer;border:none;outline:none;font-family:inherit}
        input{font-family:inherit;outline:none}
        ul,ol{list-style:none}

        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}

        /* Header / Nav - 透明玻璃沉浸导航 */
        .header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-height);transition:all var(--transition)}
        .header .header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;padding:0 28px;background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--glass-border);box-shadow:var(--glass-shadow);transition:all var(--transition)}
        .header.scrolled .header-inner{background:rgba(255,255,255,0.94);box-shadow:var(--shadow-md);border-bottom:1px solid var(--border)}

        .nav-logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:var(--primary);letter-spacing:-0.01em;white-space:nowrap;transition:color var(--transition)}
        .nav-logo .logo-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:800;flex-shrink:0}
        .nav-logo:hover{color:var(--primary-dark)}

        .nav-links{display:flex;align-items:center;gap:6px}
        .nav-links a{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:var(--radius);font-size:0.95rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition);position:relative;white-space:nowrap}
        .nav-links a:hover{color:var(--primary);background:rgba(108,60,224,0.06)}
        .nav-links a.active{color:var(--primary);background:rgba(108,60,224,0.10);font-weight:600}
        .nav-links a.active::after{content:'';position:absolute;bottom:6px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:3px}

        .nav-actions{display:flex;align-items:center;gap:10px}
        .nav-search{display:flex;align-items:center;gap:8px;padding:9px 16px;background:rgba(108,60,224,0.05);border:1px solid var(--border);border-radius:var(--radius-full);font-size:0.9rem;color:var(--text-secondary);transition:all var(--transition);cursor:pointer;white-space:nowrap}
        .nav-search:hover{border-color:var(--primary-light);background:rgba(108,60,224,0.08)}
        .nav-search i{font-size:0.85rem;color:var(--primary)}
        .nav-cta-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:var(--accent);color:#fff;border-radius:var(--radius-full);font-size:0.9rem;font-weight:600;transition:all var(--transition);white-space:nowrap;box-shadow:0 4px 14px rgba(255,107,61,0.30)}
        .nav-cta-btn:hover{background:var(--accent-hover);box-shadow:0 6px 20px rgba(255,107,61,0.40);transform:translateY(-1px)}
        .nav-toggle{display:none;flex-direction:column;gap:5px;background:none;padding:8px;border-radius:var(--radius-sm);transition:all var(--transition)}
        .nav-toggle span{display:block;width:24px;height:2.5px;background:var(--text);border-radius:3px;transition:all var(--transition)}
        .nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
        .nav-toggle.active span:nth-child(2){opacity:0}
        .nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

        /* Hero */
        .hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;padding-top:var(--header-height)}
        .hero-bg{position:absolute;inset:0;z-index:0}
        .hero-bg img,.hero-bg .bg-img{width:100%;height:100%;object-fit:cover;display:block}
        .hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(26,26,46,0.65) 0%,rgba(26,26,46,0.50) 40%,rgba(26,26,46,0.75) 100%)}
        .hero-content{position:relative;z-index:2;text-align:center;max-width:780px;padding:40px 24px}
        .hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;background:rgba(255,255,255,0.14);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.25);border-radius:var(--radius-full);color:#fff;font-size:0.9rem;font-weight:500;margin-bottom:24px;animation:fadeInUp 0.7s ease}
        .hero-badge .dot{width:8px;height:8px;background:#4ade80;border-radius:var(--radius-full);animation:pulse-dot 2s infinite}
        .hero-title{font-size:clamp(2.4rem,5vw,3.6rem);font-weight:800;color:#fff;line-height:1.2;letter-spacing:-0.02em;margin-bottom:20px;animation:fadeInUp 0.7s ease 0.1s both}
        .hero-title span{background:linear-gradient(135deg,#ff6b3d,#ff9a44);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .hero-subtitle{font-size:clamp(1.05rem,2vw,1.25rem);color:rgba(255,255,255,0.85);line-height:1.7;margin-bottom:36px;max-width:600px;margin-left:auto;margin-right:auto;animation:fadeInUp 0.7s ease 0.2s both}
        .hero-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;animation:fadeInUp 0.7s ease 0.3s both}
        .btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:var(--radius-full);font-size:1rem;font-weight:600;transition:all var(--transition);white-space:nowrap;letter-spacing:0.01em}
        .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 24px rgba(255,107,61,0.35)}
        .btn-primary:hover{background:var(--accent-hover);box-shadow:0 8px 30px rgba(255,107,61,0.48);transform:translateY(-2px)}
        .btn-outline{background:rgba(255,255,255,0.10);color:#fff;border:2px solid rgba(255,255,255,0.40);backdrop-filter:blur(4px)}
        .btn-outline:hover{background:rgba(255,255,255,0.20);border-color:rgba(255,255,255,0.65);transform:translateY(-2px)}
        .btn-lg{padding:16px 34px;font-size:1.08rem}
        .hero-scroll-indicator{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:2;animation:bounce 2s infinite;color:rgba(255,255,255,0.7);font-size:1.5rem;cursor:pointer}
        @keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
        @keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(12px)}}
        @keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}

        /* Section 通用 */
        .section{padding:80px 0}
        .section-header{text-align:center;max-width:650px;margin:0 auto 48px}
        .section-label{display:inline-block;font-size:0.85rem;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:10px}
        .section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;color:var(--text);line-height:1.3;margin-bottom:12px;letter-spacing:-0.01em}
        .section-subtitle{font-size:1.05rem;color:var(--text-secondary);line-height:1.6}

        /* Features 板块 */
        .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .feature-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:32px 28px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:all var(--transition);position:relative;overflow:hidden}
        .feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-light));opacity:0;transition:opacity var(--transition)}
        .feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}
        .feature-card:hover::before{opacity:1}
        .feature-icon{width:52px;height:52px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px;background:rgba(108,60,224,0.08);color:var(--primary);transition:all var(--transition)}
        .feature-card:hover .feature-icon{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(108,60,224,0.30)}
        .feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--text)}
        .feature-card p{font-size:0.95rem;color:var(--text-secondary);line-height:1.6}

        /* 分类入口板块 */
        .category-section{background:var(--bg-alt)}
        .category-grid{display:grid;grid-template-columns:1fr;gap:24px;max-width:700px;margin:0 auto}
        .category-card-large{display:flex;align-items:center;gap:28px;background:var(--bg-card);border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-md);transition:all var(--transition);cursor:pointer}
        .category-card-large:hover{box-shadow:var(--shadow-xl);transform:translateY(-3px);border-color:var(--primary-light)}
        .category-card-img{width:200px;height:160px;flex-shrink:0;overflow:hidden}
        .category-card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
        .category-card-large:hover .category-card-img img{transform:scale(1.06)}
        .category-card-info{padding:20px 20px 20px 0;flex:1}
        .category-card-info .tag{display:inline-block;padding:5px 12px;background:rgba(108,60,224,0.08);color:var(--primary);border-radius:var(--radius-full);font-size:0.8rem;font-weight:600;margin-bottom:10px}
        .category-card-info h3{font-size:1.3rem;font-weight:700;margin-bottom:6px;color:var(--text)}
        .category-card-info p{font-size:0.95rem;color:var(--text-secondary);line-height:1.5;margin-bottom:12px}
        .category-card-info .arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:0.9rem;transition:gap var(--transition)}
        .category-card-large:hover .arrow-link{gap:10px}

        /* 最新资讯板块 */
        .news-section{background:var(--bg)}
        .news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
        .news-item{display:flex;gap:18px;background:var(--bg-card);border-radius:var(--radius-lg);padding:18px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:all var(--transition);align-items:flex-start}
        .news-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--primary-light)}
        .news-item-thumb{width:100px;height:80px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-alt)}
        .news-item-thumb img{width:100%;height:100%;object-fit:cover}
        .news-item-content{flex:1;min-width:0}
        .news-item-content .news-date{font-size:0.8rem;color:var(--text-muted);margin-bottom:4px}
        .news-item-content h4{font-size:0.98rem;font-weight:600;color:var(--text);line-height:1.4;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .news-item-content .news-excerpt{font-size:0.85rem;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
        .news-empty{text-align:center;padding:40px;color:var(--text-muted);font-size:1rem;grid-column:1/-1}

        /* 数据统计板块 */
        .stats-section{background:linear-gradient(135deg,var(--bg-dark),#252542);color:#fff;padding:70px 0}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
        .stat-card{padding:24px 16px}
        .stat-number{font-size:2.8rem;font-weight:800;letter-spacing:-0.02em;margin-bottom:6px;background:linear-gradient(135deg,#ff6b3d,#ff9a44);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
        .stat-label{font-size:0.95rem;color:rgba(255,255,255,0.7);font-weight:500}
        .stat-card .stat-icon{font-size:1.8rem;margin-bottom:12px;opacity:0.8}

        /* 对比推荐板块 */
        .compare-section{background:var(--bg)}
        .compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .compare-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:28px 22px;border:2px solid var(--border);text-align:center;transition:all var(--transition);position:relative}
        .compare-card.featured{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:scale(1.03)}
        .compare-card.featured .compare-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:6px 16px;border-radius:var(--radius-full);font-size:0.8rem;font-weight:700;white-space:nowrap;box-shadow:0 4px 12px rgba(255,107,61,0.35)}
        .compare-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
        .compare-card.featured:hover{transform:scale(1.05) translateY(-3px)}
        .compare-card h4{font-size:1.1rem;font-weight:700;margin-bottom:6px;color:var(--text)}
        .compare-card .compare-score{font-size:2.2rem;font-weight:800;color:var(--primary);margin:12px 0}
        .compare-card ul{text-align:left;font-size:0.9rem;color:var(--text-secondary);line-height:2}
        .compare-card ul li::before{content:'✓ ';color:#4ade80;font-weight:700}

        /* FAQ 板块 */
        .faq-section{background:var(--bg-alt)}
        .faq-list{max-width:750px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
        .faq-item{background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;transition:all var(--transition)}
        .faq-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-sm)}
        .faq-question{padding:18px 22px;font-weight:600;font-size:1rem;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;user-select:none;transition:color var(--transition)}
        .faq-question:hover{color:var(--primary)}
        .faq-question i{font-size:0.85rem;color:var(--text-muted);transition:transform var(--transition);flex-shrink:0}
        .faq-item.open .faq-question i{transform:rotate(180deg);color:var(--primary)}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.4s ease}
        .faq-item.open .faq-answer{max-height:300px}
        .faq-answer-inner{padding:0 22px 18px;font-size:0.95rem;color:var(--text-secondary);line-height:1.7}

        /* CTA 板块 */
        .cta-section{position:relative;padding:90px 0;overflow:hidden;text-align:center}
        .cta-bg{position:absolute;inset:0;z-index:0}
        .cta-bg img,.cta-bg .bg-img{width:100%;height:100%;object-fit:cover}
        .cta-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(135deg,rgba(26,26,46,0.85),rgba(108,60,224,0.75))}
        .cta-content{position:relative;z-index:2;max-width:600px;margin:0 auto;padding:0 24px}
        .cta-content h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:-0.01em}
        .cta-content p{font-size:1.05rem;color:rgba(255,255,255,0.85);line-height:1.7;margin-bottom:28px}
        .cta-content .btn-primary{font-size:1.1rem;padding:16px 36px}

        /* Footer */
        .footer{background:var(--bg-dark);color:rgba(255,255,255,0.75);padding:50px 0 24px}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
        .footer-brand .nav-logo{color:#fff;margin-bottom:12px;font-size:1.2rem}
        .footer-brand p{font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.55);max-width:280px}
        .footer-col h4{font-size:1rem;font-weight:700;color:#fff;margin-bottom:14px}
        .footer-col ul{display:flex;flex-direction:column;gap:8px}
        .footer-col ul li a{font-size:0.9rem;color:rgba(255,255,255,0.55);transition:color var(--transition)}
        .footer-col ul li a:hover{color:#fff}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;font-size:0.85rem;color:rgba(255,255,255,0.4)}
        .footer-bottom a{color:rgba(255,255,255,0.5);transition:color var(--transition)}
        .footer-bottom a:hover{color:#fff}

        /* 响应式 */
        @media (max-width:1024px){
            .features-grid{grid-template-columns:repeat(2,1fr)}
            .compare-grid{grid-template-columns:repeat(2,1fr)}
            .compare-card.featured{grid-column:1/-1;transform:scale(1)}
            .compare-card.featured:hover{transform:translateY(-3px)}
            .stats-grid{grid-template-columns:repeat(2,1fr)}
            .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
            .news-list{grid-template-columns:1fr}
        }
        @media (max-width:768px){
            .nav-links{position:fixed;top:var(--header-height);left:0;right:0;background:rgba(255,255,255,0.97);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);flex-direction:column;padding:20px 24px;gap:4px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);transform:translateY(-120%);opacity:0;transition:all 0.35s ease;z-index:999}
            .nav-links.open{transform:translateY(0);opacity:1}
            .nav-links a{padding:14px 18px;width:100%;border-radius:var(--radius);font-size:1rem}
            .nav-actions{gap:6px}
            .nav-cta-btn{padding:8px 16px;font-size:0.82rem}
            .nav-search{padding:8px 12px;font-size:0.82rem}
            .nav-toggle{display:flex}
            .hero{min-height:90vh}
            .hero-title{font-size:2rem}
            .features-grid{grid-template-columns:1fr;gap:16px}
            .category-card-large{flex-direction:column}
            .category-card-img{width:100%;height:180px}
            .category-card-info{padding:16px 20px 20px}
            .news-list{grid-template-columns:1fr}
            .compare-grid{grid-template-columns:1fr}
            .compare-card.featured{grid-column:auto;transform:scale(1)}
            .compare-card.featured:hover{transform:translateY(-3px)}
            .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
            .stat-number{font-size:2.2rem}
            .footer-grid{grid-template-columns:1fr;gap:20px}
            .section{padding:56px 0}
            .cta-section{padding:60px 0}
        }
        @media (max-width:520px){
            .container{padding:0 16px}
            .hero-title{font-size:1.7rem}
            .hero-subtitle{font-size:0.95rem}
            .hero-buttons{flex-direction:column;align-items:stretch}
            .btn{justify-content:center}
            .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
            .stat-number{font-size:1.8rem}
            .feature-card{padding:24px 18px}
            .news-item{flex-direction:column;gap:12px}
            .news-item-thumb{width:100%;height:140px}
            .faq-question{font-size:0.9rem;padding:14px 16px}
            .footer-bottom{flex-direction:column;text-align:center}
        }

/* roulang page: category1 */
:root {
            --primary: #0f1923;
            --primary-light: #1a2733;
            --accent: #f0a500;
            --accent-hover: #d49400;
            --accent-light: #fff7e6;
            --surface: #ffffff;
            --bg: #f5f6f8;
            --bg-alt: #edf0f3;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(15, 25, 35, 0.04);
            --shadow-sm: 0 1px 3px rgba(15, 25, 35, 0.06), 0 1px 2px rgba(15, 25, 35, 0.04);
            --shadow: 0 4px 12px rgba(15, 25, 35, 0.07), 0 2px 4px rgba(15, 25, 35, 0.04);
            --shadow-md: 0 8px 24px rgba(15, 25, 35, 0.09), 0 4px 8px rgba(15, 25, 35, 0.05);
            --shadow-lg: 0 16px 40px rgba(15, 25, 35, 0.11), 0 8px 16px rgba(15, 25, 35, 0.06);
            --shadow-xl: 0 24px 56px rgba(15, 25, 35, 0.14), 0 12px 24px rgba(15, 25, 35, 0.07);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 72px 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 600px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header .section-subtitle {
            margin: 0 auto;
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: all var(--transition-slow);
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.55);
            box-shadow: 0 1px 6px rgba(15, 25, 35, 0.04);
        }

        .header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 28px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent) 0%, #e6a200 100%);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(240, 165, 0, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(15, 25, 35, 0.04);
        }

        .nav-links a.active {
            color: var(--accent);
            background: var(--accent-light);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            background: rgba(15, 25, 35, 0.03);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-search:hover {
            color: var(--text);
            background: rgba(15, 25, 35, 0.06);
            border-color: var(--border);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(240, 165, 0, 0.25);
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.35);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(240, 165, 0, 0.2);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            z-index: 1001;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 3px;
            transition: all var(--transition);
        }

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

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

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

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            margin-top: var(--nav-height);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 25, 35, 0.75) 0%, rgba(15, 25, 35, 0.6) 60%, rgba(15, 25, 35, 0.78) 100%);
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 2;
        }

        .page-banner-content {
            position: relative;
            z-index: 3;
            width: 100%;
            padding: 60px 0 80px;
            color: #fff;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }

        .page-banner-title {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 10px;
            line-height: 1.2;
            color: #fff;
        }

        .page-banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            line-height: 1.6;
        }

        .page-banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .page-banner-stat {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .page-banner-stat i {
            color: var(--accent);
            font-size: 0.85rem;
        }

        .page-banner-stat strong {
            color: #fff;
            font-weight: 700;
        }

        /* ========== FILTER BAR ========== */
        .filter-bar-wrap {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
            box-shadow: var(--shadow-xs);
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            background: transparent;
        }

        .filter-tag:hover {
            color: var(--primary);
            background: var(--bg-alt);
            border-color: var(--border);
        }

        .filter-tag.active {
            color: var(--accent);
            background: var(--accent-light);
            border-color: rgba(240, 165, 0, 0.25);
            font-weight: 600;
        }

        .filter-count {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 20px;
            height: 20px;
            padding: 0 6px;
            border-radius: 10px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(100, 116, 139, 0.12);
            color: var(--text-muted);
            margin-left: 4px;
        }

        .filter-tag.active .filter-count {
            background: rgba(240, 165, 0, 0.2);
            color: var(--accent);
        }

        .sort-select {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            border: 1px solid var(--border);
            background: var(--surface);
            margin-left: auto;
            transition: all var(--transition-fast);
        }

        .sort-select:hover {
            border-color: var(--text-muted);
            color: var(--text);
        }

        .sort-select i {
            font-size: 0.7rem;
        }

        /* ========== ARTICLE GRID ========== */
        .article-grid-section {
            padding: 48px 0 72px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }

        .article-card-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 10px;
            border-radius: 14px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            z-index: 2;
            letter-spacing: 0.02em;
            box-shadow: 0 2px 6px rgba(240, 165, 0, 0.3);
        }

        .article-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .article-card-tag {
            font-size: 0.72rem;
            color: var(--accent);
            background: var(--accent-light);
            padding: 3px 9px;
            border-radius: 12px;
            font-weight: 500;
        }

        .article-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--accent);
        }

        .article-card-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .article-card-stat {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-stat i {
            font-size: 0.7rem;
        }

        .article-card-read {
            font-weight: 600;
            color: var(--accent);
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-read {
            color: var(--accent-hover);
        }

        /* ========== RANKING SIDEBAR (desktop only) ========== */
        .ranking-section {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            box-shadow: var(--shadow-xs);
        }

        .ranking-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ranking-title i {
            color: var(--accent);
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .ranking-item:last-child {
            border-bottom: none;
        }

        .ranking-item:hover {
            background: rgba(245, 246, 248, 0.5);
            margin: 0 -8px;
            padding-left: 8px;
            padding-right: 8px;
            border-radius: var(--radius-sm);
        }

        .ranking-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
            color: var(--text-muted);
            background: var(--bg-alt);
        }

        .ranking-item:nth-child(1) .ranking-num {
            background: linear-gradient(135deg, #f0a500, #e69500);
            color: #fff;
            box-shadow: 0 2px 8px rgba(240, 165, 0, 0.3);
        }

        .ranking-item:nth-child(2) .ranking-num {
            background: linear-gradient(135deg, #94a3b8, #7c8fa0);
            color: #fff;
        }

        .ranking-item:nth-child(3) .ranking-num {
            background: linear-gradient(135deg, #c4906a, #b07850);
            color: #fff;
        }

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

        .ranking-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition-fast);
        }

        .ranking-item:hover .ranking-name {
            color: var(--accent);
        }

        .ranking-views {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* ========== TWO COLUMN LAYOUT ========== */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        /* ========== PAGINATION ========== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            background: var(--surface);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .pagination-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
        }

        .pagination-btn.active {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(240, 165, 0, 0.3);
        }

        .pagination-btn.prev-next {
            font-weight: 600;
            gap: 4px;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            background: var(--bg-alt);
            padding: 72px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-xs);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 12px;
        }

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 72px 0;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(240, 165, 0, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
            color: #fff;
        }

        .cta-content .section-title {
            color: #fff;
            font-size: 2rem;
        }

        .cta-content .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
            margin: 0 auto 28px;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 22px rgba(240, 165, 0, 0.45);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 12px rgba(240, 165, 0, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--primary-light);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }

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

            .page-banner-title {
                font-size: 2.1rem;
            }

            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 24px;
                gap: 4px;
                align-items: stretch;
                transform: translateX(100%);
                transition: transform var(--transition-slow);
                z-index: 999;
                justify-content: flex-start;
            }

            .nav-links.open {
                transform: translateX(0);
            }

            .nav-links a {
                padding: 14px 16px;
                border-radius: var(--radius);
                font-size: 1rem;
                justify-content: center;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-search {
                display: none;
            }

            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }

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

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

            .ranking-section {
                order: -1;
            }

            .page-banner {
                min-height: 260px;
            }

            .page-banner-title {
                font-size: 1.7rem;
            }

            .page-banner-desc {
                font-size: 0.95rem;
            }

            .filter-bar {
                gap: 6px;
                padding: 10px 0;
            }

            .filter-tag {
                font-size: 0.78rem;
                padding: 6px 12px;
            }

            .sort-select {
                margin-left: 0;
                width: 100%;
                justify-content: center;
                margin-top: 6px;
            }

            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 1.45rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

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

            .pagination-btn {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .container,
            .container-narrow {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-inner {
                padding: 0 16px;
                gap: 12px;
            }

            .nav-logo {
                font-size: 1rem;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }

            .page-banner {
                min-height: 220px;
            }

            .page-banner-title {
                font-size: 1.4rem;
            }

            .page-banner-desc {
                font-size: 0.85rem;
            }

            .page-banner-content {
                padding: 40px 0 60px;
            }

            .breadcrumb {
                font-size: 0.75rem;
            }

            .article-card-body {
                padding: 14px;
            }

            .article-card-title {
                font-size: 0.95rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --primary-light: #818CF8;
            --primary-bg: #EEF2FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --accent-light: #FCD34D;
            --accent-bg: #FFFBEB;
            --bg: #F8FAFC;
            --bg-alt: #F1F5F9;
            --surface: #FFFFFF;
            --text: #1E293B;
            --text-heading: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --border-light: #F1F5F9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 16px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 20px 32px rgba(0,0,0,0.10), 0 8px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 28px 48px rgba(0,0,0,0.14), 0 12px 24px rgba(0,0,0,0.08);
            --glass-bg: rgba(255,255,255,0.78);
            --glass-border: rgba(255,255,255,0.35);
            --glass-blur: blur(18px);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;
            --max-width: 1200px;
            --content-width: 780px;
            --header-height: 64px;
            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover { color: var(--primary); }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button { cursor: pointer; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            color: var(--text-heading);
            font-weight: 700;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: var(--content-width);
        }
        .container--article {
            max-width: 860px;
        }

        /* Header / Glass Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid var(--glass-border);
            transition: all var(--transition);
        }
        .header.scrolled {
            background: rgba(255,255,255,0.94);
            box-shadow: var(--shadow-md);
            border-bottom-color: var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-heading);
            white-space: nowrap;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .nav-logo:hover { color: var(--primary); }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius);
            background: var(--primary);
            color: #fff;
            font-size: 1.15rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 24px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text);
            background: rgba(79,70,229,0.06);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 24px;
            font-size: 0.9rem;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .nav-search:hover {
            color: var(--text);
            border-color: var(--border);
            background: var(--surface);
        }
        .nav-cta-btn {
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--primary);
            color: #fff !important;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(79,70,229,0.25);
        }
        .nav-cta-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(79,70,229,0.35);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover { background: var(--bg-alt); }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--text);
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Article Banner */
        .article-banner {
            margin-top: var(--header-height);
            position: relative;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 40%, #1a1a2e 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 260px;
            display: flex;
            align-items: center;
            padding: 48px 0;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.55) 0%, rgba(15,23,42,0.78) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .sep {
            color: rgba(255,255,255,0.4);
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: rgba(255,255,255,0.6);
            pointer-events: none;
        }
        .article-banner-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.25;
            max-width: 800px;
        }
        .article-banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.92rem;
            color: rgba(255,255,255,0.75);
        }
        .article-banner-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner-meta .meta-icon {
            font-size: 0.85rem;
            opacity: 0.8;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(245,158,11,0.85);
            color: #fff;
            font-weight: 600;
            font-size: 0.82rem;
            white-space: nowrap;
        }

        /* Main Content */
        .article-main {
            flex: 1;
            padding: 48px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }
        .article-body {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body h2 {
            font-size: 1.55rem;
            margin: 32px 0 14px;
            color: var(--text-heading);
            padding-top: 4px;
        }
        .article-body h2:first-child { margin-top: 0; }
        .article-body h3 {
            font-size: 1.3rem;
            margin: 26px 0 12px;
            color: var(--text-heading);
        }
        .article-body p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body ul, .article-body ol {
            margin: 12px 0 20px 20px;
            padding-left: 8px;
        }
        .article-body li {
            margin-bottom: 8px;
            font-size: 1.02rem;
            line-height: 1.75;
            position: relative;
            padding-left: 4px;
        }
        .article-body ul li::marker { color: var(--primary); }
        .article-body ol li::marker { color: var(--primary); font-weight: 600; }
        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 28px;
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-muted);
            font-size: 1rem;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            max-width: 100%;
        }
        .article-body code {
            background: var(--bg-alt);
            padding: 3px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            color: var(--primary-dark);
        }
        .article-body pre {
            background: #1E293B;
            color: #E2E8F0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        /* Article Footer */
        .article-footer-zone {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .article-tags-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .tag-pill {
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--bg-alt);
            color: var(--text-muted);
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .tag-pill:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        .article-share {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .article-share span {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-alt);
            color: var(--text-muted);
            transition: all var(--transition-fast);
            font-size: 0.95rem;
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .sidebar-post-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
            transition: transform var(--transition-fast);
        }
        .sidebar-post-item:last-child { border-bottom: none; padding-bottom: 0; }
        .sidebar-post-item:hover { transform: translateX(3px); }
        .sidebar-post-thumb {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }
        .sidebar-post-info {
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .sidebar-post-info .sp-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-post-info .sp-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .sidebar-cta-box h4 {
            color: #fff !important;
            margin-bottom: 10px;
            font-size: 1.05rem;
            justify-content: center;
        }
        .sidebar-cta-box h4 i { color: var(--accent-light) !important; }
        .sidebar-cta-box p {
            font-size: 0.85rem;
            opacity: 0.9;
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .sidebar-cta-box .btn-sidebar {
            display: inline-block;
            padding: 10px 24px;
            border-radius: 24px;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .sidebar-cta-box .btn-sidebar:hover {
            background: var(--accent-light);
            color: var(--text-heading) !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.2);
        }

        /* Related Section */
        .section-related {
            padding: 50px 0;
            background: var(--bg-alt);
        }
        .section-related .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-related .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.01em;
        }
        .section-related .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 6px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--bg-alt);
        }
        .related-card-body {
            padding: 18px 16px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-body .rc-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }
        .related-card-body .rc-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body .rc-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: auto;
        }

        /* CTA Section */
        .section-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(79,70,229,0.15);
            z-index: 0;
        }
        .section-cta::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(245,158,11,0.1);
            z-index: 0;
        }
        .section-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .section-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-cta p {
            color: rgba(255,255,255,0.75);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary-lg {
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            background: var(--accent);
            color: #1E293B !important;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(245,158,11,0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-lg:hover {
            background: var(--accent-dark);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245,158,11,0.45);
        }
        .btn-outline-lg {
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.5);
            color: #fff !important;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-lg:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }

        /* FAQ Section */
        .section-faq {
            padding: 56px 0;
            background: var(--surface);
        }
        .section-faq .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-faq .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.01em;
        }
        .section-faq .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 6px;
        }
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-xs);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-heading);
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* Footer */
        .footer {
            background: #0F172A;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            margin-top: 8px;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: #fff; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.12);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 60px 0;
        }
        .not-found-state .nf-icon {
            font-size: 5rem;
            color: var(--text-light);
            margin-bottom: 20px;
            opacity: 0.6;
        }
        .not-found-state h2 {
            font-size: 1.6rem;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 24px;
            background: var(--primary);
            color: #fff !important;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn-back-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-card {
                flex: 1;
                min-width: 260px;
            }
            .sidebar-cta-box {
                flex: 1;
                min-width: 260px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-banner-title {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                z-index: 999;
                pointer-events: none;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                display: block;
                text-align: center;
                padding: 12px 18px;
                border-radius: var(--radius);
                font-size: 1rem;
            }
            .nav-toggle { display: flex; }
            .nav-search { display: none; }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .article-banner {
                min-height: 200px;
                padding: 36px 0;
            }
            .article-banner-title {
                font-size: 1.45rem;
            }
            .article-banner-meta {
                font-size: 0.82rem;
                gap: 12px;
            }
            .article-body {
                padding: 22px 16px;
                border-radius: var(--radius);
            }
            .article-body h2 { font-size: 1.3rem; }
            .article-body h3 { font-size: 1.15rem; }
            .article-body p { font-size: 1rem; }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-card {
                min-width: auto;
            }
            .sidebar-cta-box {
                min-width: auto;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .section-cta h2 {
                font-size: 1.5rem;
            }
            .section-cta p {
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-footer-zone {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }
        }

        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .header-inner { padding: 0 14px; }
            .nav-logo { font-size: 1rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
            .article-banner-title {
                font-size: 1.25rem;
            }
            .article-banner {
                min-height: 170px;
                padding: 28px 0;
            }
            .article-banner-meta {
                font-size: 0.76rem;
                gap: 8px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .article-body h2 { font-size: 1.2rem; }
            .article-body p { font-size: 0.95rem; }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .section-cta h2 { font-size: 1.3rem; }
            .cta-buttons { flex-direction: column; align-items: center; }
            .btn-primary-lg, .btn-outline-lg {
                width: 100%;
                justify-content: center;
                text-align: center;
            }
            .section-related .section-header h2,
            .section-faq .section-header h2 { font-size: 1.4rem; }
        }