:root { --primary: rgb(0,184,148); --primary-hover: rgb(0,150,120); --primary-light: rgba(0,184,148,0.1); --bg-body: #f8fafc; --bg-white: #ffffff; --text-main: #0f172a; --text-body: #334155; --border-color: #e2e8f0; --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05); --transition: all 0.3s ease; }
        * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: -apple-system, BlinkMacSystemFont, Arial, sans-serif; background: var(--bg-body); color: var(--text-body); line-height: 1.8; }
        a { text-decoration: none; color: inherit; transition: var(--transition); } ul { list-style: none; } img { max-width: 100%; height: auto; border-radius: 8px; }
        .container { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 20px; }
        
        .site-header { background: var(--bg-white); box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; } .logo img { height: 40px; width: auto; max-width: 160px; object-fit: contain; } .logo span { font-size: 20px; font-weight: 800; color: var(--text-main); white-space: nowrap; }
        .desktop-nav { display: none; } .desktop-nav a { padding: 8px 16px; font-weight: 500; color: var(--text-main); } .desktop-nav a:hover { color: var(--primary); }
        @media (min-width: 992px) { .desktop-nav { display: flex; gap: 10px; align-items: center; } .mobile-menu-toggle { display: none; } }
        .mobile-menu-toggle { background: none; border: none; cursor: pointer; color: var(--text-main); padding: 8px; }
        .mobile-drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; transition: var(--transition); z-index: 998; } .mobile-drawer-overlay.active { opacity: 1; visibility: visible; }
        .mobile-drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100vh; background: var(--bg-white); z-index: 999; transition: var(--transition); display: flex; flex-direction: column; } .mobile-drawer.active { left: 0; }
        .drawer-header { padding: 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); background: #f8fafc; } .drawer-close { background: none; border: none; font-size: 24px; cursor: pointer; }
        .drawer-nav { padding: 20px 0; overflow-y: auto; } .drawer-nav a { display: block; padding: 16px 24px; color: var(--text-main); border-left: 4px solid transparent; } .drawer-nav a:hover { background: var(--primary-light); color: var(--primary); border-left-color: var(--primary); }

        
        .breadcrumb { padding: 20px 0; font-size: 14px; color: #64748b; } .breadcrumb a { color: var(--primary); }
        .article-layout { background: var(--bg-white); padding: 40px; border-radius: 12px; box-shadow: var(--shadow-sm); margin-bottom: 40px; }
        @media (max-width: 768px) { .article-layout { padding: 20px; } }
        .article-header { margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; }
        .article-title { font-size: 32px; font-weight: 800; color: var(--text-main); line-height: 1.3; margin-bottom: 16px; }
        @media (max-width: 768px) { .article-title { font-size: 24px; } }
        .article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: #64748b; }
        .article-meta span { display: flex; align-items: center; gap: 4px; }
        
        .article-content { font-size: 16px; color: var(--text-body); }
        .article-content p { margin-bottom: 20px; }
        .article-content h2, .article-content h3 { color: var(--text-main); margin: 30px 0 15px 0; }
        
        .article-tags-links { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-color); display: flex; align-items: center; gap: 10px; }
        .article-tags-links a { display: inline-block; padding: 6px 12px; background: var(--bg-body); color: var(--primary); border-radius: 4px; font-size: 13px; }
        .article-tags-links a:hover { background: var(--primary); color: #fff; }

        .article-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; }
        .article-nav a { flex: 1; padding: 20px; background: var(--bg-body); border-radius: 8px; display: flex; flex-direction: column; transition: var(--transition); border: 1px solid transparent; }
        .article-nav a:hover { border-color: var(--primary-light); background: #fff; box-shadow: var(--shadow-sm); }
        .article-nav .nav-label { font-size: 12px; color: #64748b; margin-bottom: 8px; }
        .article-nav .nav-title { font-size: 15px; font-weight: 600; color: var(--text-main); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .nav-next { text-align: right; }

        .related-section { margin-top: 60px; margin-bottom: 60px; }
        .related-title { font-size: 20px; margin-bottom: 20px; color: var(--text-main); border-left: 4px solid var(--primary); padding-left: 10px; }
        .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
        .related-card { display: flex; flex-direction: column; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
        .related-card img { height: 160px; width: 100%; object-fit: cover; border-radius: 0; }
        .related-content { padding: 16px; }
        .related-card h4 { font-size: 16px; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        .site-footer { background: #1e293b; color: #94a3b8; padding: 80px 0 0 0; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 60px; }
        .footer-logo span { color: #fff; } .footer-links h3 { color: #fff; font-size: 18px; margin-bottom: 24px; } .footer-links ul li { margin-bottom: 12px; }
        .footer-bottom { border-top: 1px solid #334155; padding: 24px 0; text-align: center; font-size: 14px; }