:root {
      --primary-color: #1D7BFF;
      --accent-purple: rgb(187,134,252);
      --bg-dark: #0A0F1D;
      --bg-card: #131B31;
      --text-main: #E2E8F0;
      --text-muted: #8A99AD;
      --border-color: rgba(29, 123, 255, 0.15);
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: var(--font-family); background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

    
    .site-header { position: sticky; top: 0; z-index: 1000; background: rgba(10, 15, 29, 0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); height: 72px; }
    .header-container { display: flex; justify-content: space-between; align-items: center; height: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { font-size: 18px; font-weight: 800; background: linear-gradient(135deg, #FFF 0%, var(--primary-color) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .desktop-nav { display: flex; gap: 32px; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-muted); padding: 8px 0; }
    .desktop-nav a:hover { color: var(--primary-color); }
    .nav-btn { background: linear-gradient(135deg, var(--primary-color) 0%, rgba(29, 123, 255, 0.8) 100%); color: #fff; padding: 10px 24px; border-radius: 6px; font-size: 14px; font-weight: 600; }
    .drawer-trigger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; }
    .drawer-trigger span { display: block; width: 24px; height: 2px; background-color: var(--text-main); }

    .mobile-drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(4px); z-index: 1999; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
    .mobile-drawer-overlay.active { opacity: 1; visibility: visible; }
    .mobile-drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100vh; background: var(--bg-card); z-index: 2000; padding: 24px; display: flex; flex-direction: column; gap: 32px; transition: all 0.3s ease; border-right: 1px solid var(--border-color); }
    .mobile-drawer.active { left: 0; }
    .drawer-close { background: none; border: none; color: var(--text-main); font-size: 28px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-muted); padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }

    
    .tag-index-section { padding: 80px 0 120px 0; }
    .section-title-wrap { text-align: center; margin-bottom: 60px; }
    .section-title { font-size: 36px; font-weight: 800; color: #FFF; margin-bottom: 16px; }
    .section-desc { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

    .tag-cloud-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 50px 40px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
    }
    .cloud-tag-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(29, 123, 255, 0.08);
      border: 1px solid rgba(29, 123, 255, 0.2);
      padding: 10px 20px;
      border-radius: 30px;
      font-size: 15px;
      color: var(--text-main);
      transition: all 0.3s ease;
    }
    .cloud-tag-link:hover {
      background: var(--primary-color);
      color: #FFF;
      border-color: var(--primary-color);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(29, 123, 255, 0.3);
    }
    .cloud-tag-link span {
      font-size: 11px;
      background: rgba(255, 255, 255, 0.15);
      padding: 2px 6px;
      border-radius: 10px;
      color: #A5C9FF;
    }

    
    .site-footer { background: #060912; border-top: 1px solid var(--border-color); padding: 60px 0 30px 0; color: var(--text-muted); font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
    .footer-brand p { margin-top: 16px; font-size: 13px; line-height: 1.6; }
    .footer-col h4 { color: #FFF; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
    .footer-col ul { display: flex; flex-direction: column; gap: 12px; }
    .footer-col a:hover { color: var(--primary-color); }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; }
    .footer-links { display: flex; gap: 20px; }

    @media (max-width: 992px) {
      .desktop-nav { display: none; }
      .drawer-trigger { display: flex; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    }