:root {
      --primary: #1D7BFF;
      --primary-glow: rgba(29, 123, 255, 0.35);
      --bg-dark: rgb(32,33,36);
      --bg-deep: #141517;
      --bg-card: rgba(255, 255, 255, 0.03);
      --text-light: #f5f5f7;
      --text-gray: #a1a1a6;
      --border-color: rgba(255,255,255,0.08);
      --glow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark);
      color: var(--text-light);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    
    .site-header {
      background: rgba(32, 33, 36, 0.85);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
    }
    .header-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
    }
    .logo img {
      display: block;
      height: 40px;
      width: auto;
      max-width: 160px;
      object-fit: contain;
      flex-shrink: 0;
    }
    .logo span {
      display: inline-block;
      font-size: 18px;
      font-weight: 800;
      line-height: 1;
      color: var(--text-light);
      white-space: nowrap;
      letter-spacing: 0.5px;
    }
    .desktop-nav {
      display: flex;
      gap: 24px;
    }
    .nav-item {
      color: var(--text-gray);
      font-size: 15px;
      font-weight: 500;
    }
    .nav-item:hover {
      color: var(--primary);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      border: none;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: #1062d4;
      box-shadow: 0 0 15px var(--primary-glow);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      flex-direction: column;
      gap: 6px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-light);
      transition: 0.3s;
    }

    
    .drawer-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.6);
      backdrop-filter: blur(5px);
      z-index: 1100;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }
    .drawer-nav {
      position: fixed;
      top: 0;
      left: -300px;
      width: 300px;
      height: 100%;
      background: var(--bg-deep);
      z-index: 1200;
      box-shadow: var(--glow);
      transition: all 0.3s ease;
      padding: 24px;
      display: flex;
      flex-direction: column;
    }
    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
    }
    .drawer-close {
      background: none;
      border: none;
      color: var(--text-light);
      font-size: 28px;
      cursor: pointer;
    }
    .mobile-nav {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .mobile-nav a {
      font-size: 18px;
      color: var(--text-gray);
      font-weight: 500;
    }
    .mobile-nav a:hover {
      color: var(--primary);
    }
    body.drawer-active .drawer-overlay {
      opacity: 1;
      visibility: visible;
    }
    body.drawer-active .drawer-nav {
      left: 0;
    }

    
    .page-hero {
      padding: 160px 0 80px;
      text-align: center;
      background: radial-gradient(circle at 50% 10%, rgba(29, 123, 255, 0.12) 0%, rgba(32, 33, 36, 0) 60%), var(--bg-deep);
      border-bottom: 1px solid var(--border-color);
    }
    .page-hero h1 {
      font-size: 40px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    
    .tag-cloud-wrapper {
      padding: 80px 0 100px;
    }
    .cloud-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 50px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
    }
    .cloud-item {
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border-color);
      padding: 10px 24px;
      border-radius: 30px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-gray);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .cloud-item span {
      background: rgba(29,123,255,0.15);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 10px;
      font-size: 11px;
    }
    .cloud-item:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
    }
    .cloud-item:hover span {
      background: rgba(255,255,255,0.25);
      color: #fff;
    }

    
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid var(--border-color);
      padding: 80px 0 30px;
    }
    .footer-container {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-info .logo {
      margin-bottom: 20px;
    }
    .footer-desc {
      color: var(--text-gray);
      font-size: 14px;
      line-height: 1.8;
    }
    .site-footer h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 24px;
      color: var(--text-light);
    }
    .site-footer ul {
      list-style: none;
    }
    .site-footer ul li {
      margin-bottom: 12px;
    }
    .site-footer ul li a {
      color: var(--text-gray);
      font-size: 14px;
    }
    .site-footer ul li a:hover {
      color: var(--primary);
    }
    .footer-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .footer-tag-item {
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border-color);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
      color: var(--text-gray);
    }
    .footer-tag-item:hover {
      border-color: var(--primary);
      color: var(--primary);
    }
    .footer-contact p {
      font-size: 14px;
      color: var(--text-gray);
      margin-bottom: 10px;
    }
    .social-links {
      margin-top: 20px;
    }
    .social-icon {
      display: inline-flex;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 6px;
      font-size: 13px;
      color: var(--text-light);
    }
    .social-icon:hover {
      background: var(--primary);
      border-color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 13px;
      color: var(--text-muted);
    }

    @media (max-width: 991px) {
      .footer-container { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .desktop-nav, .header-actions .btn { display: none; }
      .menu-toggle { display: flex; }
      .cloud-box { padding: 24px; }
      .footer-container { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }