:root {
      --primary: #0891B2;
      --dark-sea: #083344;
      --light-cyan: #ECFEFF;
      --mint: #2DD4BF;
      --accent-blue: #2563EB;
      --text-main: #0F172A;
      --text-muted: #475569;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-color: #E2E8F0;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-main); color: var(--text-main); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    
    
    header { background-color: rgba(8, 51, 68, 0.95); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(45, 212, 191, 0.2); }
    .nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; }
    .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: #FFFFFF; white-space: nowrap; }
    .nav-menu { display: flex; align-items: center; gap: 28px; }
    .nav-menu a { color: #E2E8F0; font-size: 15px; font-weight: 500; }
    .nav-menu a:hover { color: var(--mint); }
    .nav-cta { display: flex; align-items: center; gap: 16px; }
    .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 6px; font-weight: 600; font-size: 14px; transition: all 0.3s ease; cursor: pointer; border: none; }
    .btn-primary { background: linear-gradient(135deg, var(--primary), var(--mint)); color: #FFFFFF; }
    .btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
    .btn-secondary { background-color: rgba(255, 255, 255, 0.1); color: #FFFFFF; border: 1px solid rgba(255, 255, 255, 0.2); }
    .menu-btn { display: none; background: none; border: none; color: #FFFFFF; cursor: pointer; padding: 4px; }

    
    .drawer { position: fixed; top: 0; left: -100%; width: 300px; height: 100vh; background-color: var(--dark-sea); z-index: 2000; transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); padding: 24px; display: flex; flex-direction: column; gap: 32px; box-shadow: 4px 0 24px rgba(0,0,0,0.3); }
    .drawer.active { left: 0; }
    .drawer-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 16px; }
    .drawer-close { background: none; border: none; color: #FFFFFF; font-size: 24px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-nav a { color: #E2E8F0; font-size: 16px; font-weight: 500; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: rgba(0,0,0,0.5); z-index: 1500; display: none; backdrop-filter: blur(2px); }
    .drawer-overlay.active { display: block; }

    
    .page-header { background: radial-gradient(circle at top, #0A4356 0%, #03151D 100%); color: #FFFFFF; padding: 80px 24px; text-align: center; border-bottom: 4px solid var(--primary); }
    .page-header h1 { font-size: 40px; font-weight: 800; margin-bottom: 16px; }
    .page-header p { font-size: 17px; color: #94A3B8; max-width: 700px; margin: 0 auto; }

    
    .section { padding: 80px 24px; }
    .container { max-width: 1000px; margin: 0 auto; }
    .tag-index-card { background-color: #FFFFFF; border: 1px solid var(--border-color); border-radius: 12px; padding: 48px; }
    .tag-cloud-intro { text-align: center; margin-bottom: 40px; font-size: 16px; color: var(--text-muted); line-height: 1.8; }
    
    
    .tag-cloud-box { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
    .tag-cloud-item { display: inline-flex; align-items: center; gap: 6px; padding: 10px 22px; border-radius: 30px; border: 1px solid var(--border-color); font-size: 15px; font-weight: 600; background-color: #F8FAFC; transition: all 0.3s ease; }
    .tag-cloud-item:hover { transform: translateY(-2px); border-color: var(--primary); background-color: var(--light-cyan); color: var(--primary); box-shadow: 0 4px 12px rgba(8, 145, 178, 0.1); }
    .tag-count { font-size: 11px; background-color: rgba(8, 145, 178, 0.1); color: var(--primary); padding: 2px 6px; border-radius: 20px; font-weight: normal; }

    
    footer { background-color: #03151D; color: #94A3B8; border-top: 1px solid rgba(255,255,255,0.08); padding: 64px 24px 32px; font-size: 14px; }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 48px; margin-bottom: 48px; }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-brand .logo span { color: #FFFFFF; }
    .footer-brand p { line-height: 1.8; margin-bottom: 16px; }
    .footer-title { color: #FFFFFF; font-size: 16px; font-weight: 700; margin-bottom: 20px; text-transform: uppercase; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 12px; }
    .footer-links a:hover { color: var(--mint); }
    .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.05); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }

    @media (max-width: 768px) {
      .nav-menu, .nav-cta { display: none; }
      .menu-btn { display: block; }
      .tag-index-card { padding: 24px; }
      .footer-container { grid-template-columns: 1fr; gap: 32px; }
    }