:root { --primary: rgb(0,199,190); --primary-dark: #00a8a1; --primary-light: #e6f9f8; --text-main: #1a1f24; --text-muted: #6b7280; --bg-body: #f8fafc; --bg-white: #ffffff; --border-color: #e2e8f0; --shadow-sm: 0 1px 3px 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, "Segoe UI", sans-serif; background-color: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
        .site-header { background: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 44px; width: auto; max-width: 180px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 22px; font-weight: 800; line-height: 1; color: var(--text-main); white-space: nowrap; }
        .desktop-nav ul { display: flex; gap: 30px; }
        .desktop-nav a:hover { color: var(--primary); }
        .mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text-main); }
        .mobile-drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; z-index: 1000; transition: var(--transition); }
        .mobile-drawer { position: fixed; top: 0; left: -320px; width: 320px; height: 100vh; background: var(--bg-white); z-index: 1001; display: flex; flex-direction: column; transition: var(--transition); }
        .drawer-active .mobile-drawer-overlay { opacity: 1; visibility: visible; }
        .drawer-active .mobile-drawer { left: 0; }
        .drawer-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; border-bottom: 1px solid var(--border-color); }
        .drawer-close { background: var(--primary-light); border: none; width: 36px; height: 36px; border-radius: 50%; color: var(--primary); }
        .drawer-body { padding: 20px; }
        .mobile-nav li { border-bottom: 1px solid var(--border-color); }
        .mobile-nav a { display: block; padding: 15px 0; }
        .site-footer { background: #1a1f24; color: #a0aec0; padding: 60px 0 0; margin-top: 60px;}
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo span { color: #fff; }
        .footer-links ul { display: flex; flex-direction: column; gap: 12px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; }

        
        .article-layout { max-width: 900px; margin: 40px auto; background: var(--bg-white); border-radius: 12px; border: 1px solid var(--border-color); padding: 50px; }
        .breadcrumb { font-size: 14px; color: var(--text-muted); margin-bottom: 30px; }
        .breadcrumb a { color: var(--primary); }
        
        .article-header { margin-bottom: 40px; border-bottom: 1px solid var(--border-color); padding-bottom: 30px; }
        .article-title { font-size: 32px; color: var(--text-main); margin-bottom: 20px; line-height: 1.4; }
        .article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--text-muted); align-items: center; }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        
        .article-content { font-size: 17px; line-height: 1.8; color: #334155; }
        .article-content p { margin-bottom: 20px; }
        .article-content h2, .article-content h3 { color: var(--text-main); margin: 40px 0 20px; }
        .article-content img { border-radius: 8px; margin: 30px auto; box-shadow: var(--shadow-sm); }
        .article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 20px; }
        .article-content li { margin-bottom: 10px; }
        .article-content blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); padding: 15px 20px; margin: 30px 0; border-radius: 0 8px 8px 0; font-style: italic; }
        
        .article-tags-wrap { margin-top: 50px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
        .tag-label { font-size: 14px; font-weight: bold; color: var(--text-main); }
        .article-tags-wrap a { font-size: 13px; background: var(--bg-body); border: 1px solid var(--border-color); padding: 5px 12px; border-radius: 20px; color: var(--text-muted); }
        .article-tags-wrap a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

        .article-nav { display: flex; justify-content: space-between; margin-top: 50px; border-top: 1px solid var(--border-color); padding-top: 30px; gap: 20px; }
        .nav-link { flex: 1; padding: 20px; background: var(--bg-body); border-radius: 8px; transition: var(--transition); border: 1px solid var(--border-color); }
        .nav-link:hover { border-color: var(--primary); background: var(--bg-white); }
        .nav-label { font-size: 13px; color: var(--text-muted); display: block; margin-bottom: 8px; }
        .nav-title { font-weight: bold; color: var(--text-main); font-size: 16px; }
        
        
        .related-section { max-width: 900px; margin: 40px auto 80px; }
        .related-title { font-size: 24px; margin-bottom: 20px; position: relative; padding-left: 15px; }
        .related-title::before { content: ''; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; background: var(--primary); border-radius: 2px; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        
        
        .post-card { background: var(--bg-white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
        .card-img-link { display: block; aspect-ratio: 16/9; }
        .card-img-link img { width: 100%; height: 100%; object-fit: cover; }
        .card-content { padding: 15px; }
        .card-title { font-size: 15px; line-height: 1.4; margin-bottom: 8px; }
        .card-meta { font-size: 12px; color: var(--text-muted); }

        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu-toggle { display: block; }
            .article-layout { margin: 20px; padding: 20px; }
            .article-title { font-size: 24px; }
            .article-nav { flex-direction: column; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }