:root { --primary: rgb(90,200,250); --primary-dark: rgb(60, 180, 230); --bg-body: #f4f7fa; --bg-surface: #ffffff; --text-main: #1e293b; --text-muted: #64748b; --border-color: #e2e8f0; --shadow-sm: 0 1px 3px rgba(0,0,0,0.05); }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', sans-serif; background-color: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: 0.3s; }
        img { max-width: 100%; display: block; }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--border-color); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-main); white-space: nowrap; }
        .nav-desktop { display: flex; gap: 30px; align-items: center; }
        .nav-desktop a { font-weight: 500; font-size: 15px; position: relative; }
        .nav-desktop a:hover { color: var(--primary); }
        .header-actions { display: flex; gap: 15px; }
        .btn { display: inline-block; padding: 10px 24px; border-radius: 6px; font-weight: 600; text-align: center; cursor: pointer; border: 1px solid var(--primary); }
        .btn-primary { background-color: var(--primary); color: #fff; }
        .mobile-menu-btn { display: none; font-size: 24px; cursor: pointer; }
        
        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: 0.3s; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: #fff; z-index: 1000; transition: left 0.3s ease; display: flex; flex-direction: column; }
        .drawer.active { left: 0; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { font-size: 24px; cursor: pointer; }
        .drawer-body { padding: 20px; overflow-y: auto; flex: 1; }
        .drawer-nav a { display: block; padding: 12px 0; border-bottom: 1px solid #f1f5f9; }

        
        .tag-hero { padding: 60px 0; text-align: center; background: #fff; border-bottom: 1px solid var(--border-color); }
        .tag-hero h1 { font-size: 36px; color: #0f172a; margin-bottom: 15px; }
        .tag-hero p { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

        .tag-container { padding: 60px 0; min-height: 50vh; }
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center; }
        .tag-item { display: inline-flex; align-items: center; gap: 8px; background: #fff; padding: 10px 20px; border-radius: 30px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: 0.3s; }
        .tag-item:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(90,200,250,0.2); }
        .tag-name { font-size: 16px; font-weight: 500; color: var(--text-main); }
        .tag-item:hover .tag-name { color: var(--primary); }
        .tag-count { background: var(--bg-body); color: var(--text-muted); font-size: 12px; padding: 2px 8px; border-radius: 10px; }
        
        .tag-tips { background: rgba(90,200,250,0.05); border: 1px dashed var(--primary); padding: 20px; border-radius: 12px; margin-top: 50px; text-align: center; color: var(--text-muted); font-size: 14px; }

        
        .footer { background: #0f172a; color: #94a3b8; padding: 60px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo span { color: #fff; }
        .footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-bottom { border-top: 1px solid #1e293b; padding-top: 20px; text-align: center; font-size: 13px; display: flex; justify-content: space-between; }

        @media (max-width: 768px) {
            .nav-desktop, .header-actions { display: none; }
            .mobile-menu-btn { display: block; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-bottom { flex-direction: column; gap: 10px; }
        }