:root { --primary: rgb(209,213,219); --primary-dark: #9ca3af; --text-main: #1f2937; --text-muted: #6b7280; --bg-body: #f9fafb; --bg-white: #ffffff; --accent: #111827; --border-color: #e5e7eb; }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; }
        ul, li { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        header { background-color: 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: 70px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 36px; 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(--accent); white-space: nowrap; }
        .nav-desktop { display: flex; gap: 30px; align-items: center; }
        .nav-desktop a { font-size: 16px; font-weight: 500; color: var(--text-main); transition: color 0.3s; }
        .nav-desktop a:hover { color: var(--primary-dark); }
        .mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; }
        .mobile-menu-btn svg { width: 28px; height: 28px; fill: var(--text-main); }
        
        .mobile-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; transition: 0.3s; z-index: 998; }
        .mobile-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: left 0.3s ease; display: flex; flex-direction: column; box-shadow: 2px 0 8px rgba(0,0,0,0.1); }
        .mobile-drawer.active { left: 0; }
        .drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 20px; border-bottom: 1px solid var(--border-color); }
        .drawer-close { background: none; border: none; cursor: pointer; }
        .drawer-close svg { width: 24px; height: 24px; fill: var(--text-muted); }
        .drawer-nav { padding: 20px; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; }
        .drawer-nav a { display: block; font-size: 16px; font-weight: 500; color: var(--text-main); padding: 10px 0; border-bottom: 1px solid var(--bg-body); }
        
        .page-hero { background: var(--accent); padding: 60px 0; color: var(--bg-white); text-align: center; }
        .page-title { font-size: 32px; font-weight: 700; margin-bottom: 15px; }
        .page-desc { font-size: 16px; color: var(--primary); max-width: 600px; margin: 0 auto; }
        
        .tag-cloud-section { padding: 80px 0; background: var(--bg-white); min-height: 400px; }
        .tag-wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; max-width: 900px; margin: 0 auto; }
        .tag-item { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 30px; font-size: 16px; color: var(--accent); transition: all 0.3s; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
        .tag-item:hover { background: var(--accent); color: var(--bg-white); border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        .tag-count { font-size: 12px; background: var(--primary); color: var(--accent); padding: 2px 8px; border-radius: 10px; font-weight: bold; }
        .tag-item:hover .tag-count { background: var(--bg-white); }

        footer { background-color: var(--accent); color: var(--primary); padding: 60px 0 30px; margin-top: 0; }
        .footer-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo span { color: var(--bg-white); }
        .footer-desc { margin-top: 15px; font-size: 14px; color: var(--primary-dark); }
        .footer-title { font-size: 18px; color: var(--bg-white); font-weight: 600; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: var(--primary); transition: color 0.3s; font-size: 14px; }
        .footer-links a:hover { color: var(--bg-white); }
        .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 14px; color: var(--primary-dark); }
        
        @media (max-width: 992px) { .nav-desktop { display: none; } .mobile-menu-btn { display: block; } .footer-grid { grid-template-columns: 1fr; gap: 30px; } }