:root {
      --primary: rgb(9,132,227);
      --primary-rgb: 9, 132, 227;
      --primary-glow: rgba(29, 123, 255, 0.15);
      --bg-dark: #070b19;
      --bg-card: rgba(15, 23, 42, 0.6);
      --text-light: #f8fafc;
      --text-muted: #94a3b8;
      --border-color: rgba(255, 255, 255, 0.08);
      --max-width: 1200px;
    }
    * { 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; }
    
    
    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: rgba(7, 11, 25, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
      height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .logo img {
      height: 40px;
      width: auto;
      max-width: 160px;
      object-fit: contain;
    }
    .logo span {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, #fff 30%, #a5f3fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-desktop {
      display: flex;
      align-items: center;
      gap: 30px;
    }
    .nav-desktop a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-desktop a:hover {
      color: var(--text-light);
    }
    .nav-btn {
      background: var(--primary);
      padding: 8px 18px;
      border-radius: 6px;
      color: #fff !important;
      font-weight: 600;
      box-shadow: 0 4px 12px var(--primary-glow);
    }
    .nav-btn:hover {
      opacity: 0.9;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: #fff;
      font-size: 24px;
      cursor: pointer;
    }

    
    .drawer-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.6);
      z-index: 200;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }
    .drawer {
      position: fixed;
      top: 0;
      left: -280px;
      width: 280px;
      height: 100%;
      background: #0a0f24;
      z-index: 201;
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 30px;
      transition: all 0.3s ease;
      border-right: 1px solid var(--border-color);
    }
    .drawer.active { left: 0; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .close-btn {
      background: none;
      border: none;
      color: var(--text-muted);
      font-size: 24px;
      cursor: pointer;
    }
    .drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-nav a {
      font-size: 16px;
      color: var(--text-muted);
    }
    .drawer-nav a:hover { color: #fff; }

    
    .page-hero {
      padding: 130px 20px 40px;
      background: linear-gradient(180deg, rgba(9, 132, 227, 0.05) 0%, transparent 100%);
      text-align: center;
    }
    .breadcrumb {
      display: flex;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 15px;
    }
    .breadcrumb a:hover { color: #fff; }

    
    .art-container {
      max-width: var(--max-width);
      margin: 40px auto;
      padding: 0 20px;
      display: grid;
      grid-template-columns: 3fr 1fr;
      gap: 30px;
    }
    article {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 40px;
    }
    .article-header {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 25px;
      margin-bottom: 30px;
    }
    .article-header h1 { font-size: 32px; font-weight: 800; color: #fff; line-height: 1.4; margin-bottom: 15px; }
    
    .article-meta-info {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .article-meta-info span { display: inline-flex; align-items: center; gap: 6px; }

    .article-body {
      font-size: 16px;
      line-height: 1.8;
      color: #e2e8f0;
    }
    .article-body p { margin-bottom: 20px; }
    .article-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 20px 0; }
    
    .article-tags {
      margin-top: 40px;
      padding-top: 20px;
      border-top: 1px solid var(--border-color);
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .tag-link {
      background: rgba(9, 132, 227, 0.1);
      border: 1px solid rgba(9, 132, 227, 0.2);
      color: var(--primary);
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 13px;
    }
    .tag-link:hover { background: var(--primary); color: #fff; }

    
    .prev-next {
      margin-top: 40px;
      padding-top: 25px;
      border-top: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      gap: 20px;
      font-size: 14px;
    }
    .prev-next a { color: var(--text-muted); max-width: 48%; }
    .prev-next a:hover { color: #fff; }

    
    .related-section {
      margin-top: 60px;
    }
    .related-title { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 20px; }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }
    .related-card {
      background: rgba(15, 23, 42, 0.4);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px;
    }
    .related-card h4 { font-size: 15px; margin-bottom: 10px; line-height: 1.4; }
    .related-card h4 a { color: #fff; }
    .related-card h4 a:hover { color: var(--primary); }
    .related-time { font-size: 12px; color: var(--text-muted); }

    
    aside {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }
    .widget {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: 12px;
    }
    .widget-title { font-size: 16px; font-weight: 700; margin-bottom: 20px; border-left: 4px solid var(--primary); padding-left: 10px; color: #fff; }
    .hot-list { list-style: none; display: flex; flex-direction: column; gap: 15px; }
    .hot-item { display: flex; gap: 10px; font-size: 14px; }
    .hot-num {
      width: 24px;
      height: 24px;
      background: rgba(255,255,255,0.05);
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .hot-item:nth-child(1) .hot-num { background: #ff5f56; color: #fff; }
    .hot-item:nth-child(2) .hot-num { background: #ffbd2e; color: #fff; }
    .hot-item:nth-child(3) .hot-num { background: #27c93f; color: #fff; }
    .hot-title { flex: 1; color: var(--text-muted); }
    .hot-title:hover { color: #fff; }

    
    footer {
      background: #040710;
      border-top: 1px solid var(--border-color);
      padding: 60px 20px 30px;
      margin-top: 100px;
    }
    .footer-grid {
      max-width: var(--max-width);
      margin: 0 auto 40px;
      display: grid;
      grid-template-columns: 2fr repeat(3, 1fr);
      gap: 40px;
    }
    .footer-brand p { color: var(--text-muted); font-size: 14px; margin-top: 15px; max-width: 300px; }
    .footer-col h4 { font-size: 16px; margin-bottom: 20px; color: #fff; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { margin-bottom: 12px; }
    .footer-col ul li a { color: var(--text-muted); font-size: 14px; }
    .footer-col ul li a:hover { color: #fff; }
    .footer-bottom {
      max-width: var(--max-width);
      margin: 0 auto;
      border-top: 1px solid var(--border-color);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    @media (max-width: 991px) {
      .art-container { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-desktop { display: none; }
      .menu-toggle { display: block; }
      article { padding: 24px; }
      .article-header h1 { font-size: 24px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
    }