:root { --primary: rgb(30,64,175); --primary-hover: rgb(25, 54, 150); --bg-body: #f4f6f9; --bg-white: #ffffff; --text-dark: #1a1a1a; --text-gray: #666666; --text-light: #999999; --border-color: #e5e7eb; --shadow: 0 4px 12px rgba(0,0,0,0.05); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, sans-serif; background-color: var(--bg-body); color: var(--text-dark); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: color 0.3s; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        .header { background: var(--bg-white); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; 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-dark); white-space: nowrap; }
        .nav-desktop { display: flex; gap: 30px; align-items: center; }
        .nav-desktop a { font-size: 16px; font-weight: 500; color: var(--text-dark); }
        .nav-desktop a:hover { color: var(--primary); }
        .menu-btn { display: none; font-size: 24px; cursor: pointer; background: none; border: none; }
        .btn { display: inline-block; padding: 10px 20px; background: var(--primary); color: #fff; border-radius: 6px; font-weight: 600; text-align: center; }
        
        .drawer-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; transition: opacity 0.3s; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: var(--bg-white); z-index: 999; transition: left 0.3s ease; box-shadow: 2px 0 10px rgba(0,0,0,0.1); overflow-y: auto; }
        .drawer.active { left: 0; }
        .drawer-overlay.active { display: block; opacity: 1; }
        .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; background: none; border: none; color: var(--text-gray); }
        .drawer-nav { padding: 20px; display: flex; flex-direction: column; gap: 15px; }
        .drawer-nav a { display: block; font-size: 16px; font-weight: 500; padding: 10px 0; border-bottom: 1px dashed var(--border-color); }
        
        .footer { background: #111827; color: #9ca3af; padding: 60px 0 20px; margin-top: 60px;}
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo { margin-bottom: 20px; }
        .footer-logo .logo span { color: #fff; }
        .footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; max-width: 300px; }
        .footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { font-size: 14px; }
        .footer-links a:hover { color: #fff; text-decoration: underline; }
        .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid #374151; font-size: 13px; }
        @media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 768px) { .nav-desktop { display: none; } .menu-btn { display: block; } .footer-grid { grid-template-columns: 1fr; } }

        
        .tag-hero { background: url('https://placehold.co/1920x300/1e40af/ffffff?text=Tag+Cloud+Data') center/cover; padding: 80px 0; text-align: center; color: #fff; position: relative; }
        .tag-hero::before { content: ''; position: absolute; inset: 0; background: rgba(30,64,175,0.85); }
        .tag-hero-content { position: relative; z-index: 2; max-width: 600px; margin: 0 auto; }
        .tag-hero-title { font-size: 36px; font-weight: 800; margin-bottom: 15px; }
        .tag-hero-desc { font-size: 16px; opacity: 0.9; }

        .tag-main { padding: 60px 0; background: var(--bg-white); border-radius: 12px; box-shadow: var(--shadow); margin-top: -30px; position: relative; z-index: 10; margin-bottom: 60px; }
        .tag-container { padding: 0 40px; }
        .tag-cloud-wrap { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center; }
        .tag-item { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 30px; font-size: 15px; font-weight: 500; color: var(--text-dark); transition: all 0.3s; }
        .tag-item:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 10px rgba(30,64,175,0.2); }
        .tag-count { font-size: 12px; background: rgba(0,0,0,0.05); padding: 2px 8px; border-radius: 12px; }
        .tag-item:hover .tag-count { background: rgba(255,255,255,0.2); }