:root {
      --primary: rgb(108,92,231);
      --primary-hover: #5848d3;
      --glacier-blue: #1D7BFF;
      --deep-sea-ink: #0A1128;
      --silver-white: #F4F7FC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --bg-light: #F8FAFC;
      --transition: all 0.3s ease;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.6;
    }

    a { text-decoration: none; color: inherit; transition: var(--transition); }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: var(--deep-sea-ink);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      height: 80px;
    }
    .header-container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; object-fit: contain; }
    .logo span { font-size: 20px; font-weight: 800; color: #FFF; }
    .nav-menu { display: flex; align-items: center; gap: 32px; }
    .nav-menu a { color: rgba(255, 255, 255, 0.8); font-size: 15px; font-weight: 500; }
    .nav-menu a:hover { color: var(--glacier-blue); }

    
    .menu-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; }
    .menu-toggle span { display: block; width: 24px; height: 2px; background-color: #FFF; }

    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(10, 17, 40, 0.6); z-index: 1000; opacity: 0; visibility: hidden; transition: var(--transition); }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100%; background-color: var(--deep-sea-ink); z-index: 1001; padding: 40px 24px; display: flex; flex-direction: column; gap: 40px; transition: left 0.4s ease; }
    .drawer.active { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; }
    .drawer-close { background: none; border: none; font-size: 28px; color: #FFF; cursor: pointer; }
    .drawer-menu { display: flex; flex-direction: column; gap: 20px; }
    .drawer-menu a { color: #FFF; font-size: 16px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }

    
    .breadcrumbs-wrap {
      background-color: #FFF;
      border-bottom: 1px solid var(--border-color);
      padding: 16px 0;
      margin-top: 80px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .breadcrumbs-wrap a:hover { color: var(--primary); }

    
    .article-layout { display: grid; grid-template-columns: 3fr 1fr; gap: 40px; padding: 50px 0; }
    .article-main { background-color: #FFF; border-radius: 16px; border: 1px solid var(--border-color); padding: 40px; }
    
    .article-header { border-bottom: 1px solid var(--border-color); padding-bottom: 30px; margin-bottom: 30px; }
    .article-title { font-size: 32px; font-weight: 800; color: var(--deep-sea-ink); line-height: 1.35; margin-bottom: 20px; }
    .article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--text-muted); }
    
    .article-body { font-size: 16px; color: #334155; line-height: 1.8; margin-bottom: 40px; }
    .article-body p { margin-bottom: 24px; }
    .article-body h2 { font-size: 22px; font-weight: 800; color: var(--deep-sea-ink); margin-top: 40px; margin-bottom: 20px; border-left: 4px solid var(--primary); padding-left: 12px; }
    .article-body h3 { font-size: 18px; font-weight: 700; color: var(--deep-sea-ink); margin-top: 30px; margin-bottom: 16px; }
    .article-body ul { margin-bottom: 24px; padding-left: 20px; }
    .article-body li { margin-bottom: 8px; }
    .article-body img { border-radius: 10px; margin: 24px auto; display: block; box-shadow: 0 4px 12px rgba(0,0,0,0.03); }

    
    .article-tags-box { border-top: 1px solid var(--border-color); padding-top: 24px; margin-top: 40px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
    .article-tags-box span { font-weight: 700; color: var(--deep-sea-ink); font-size: 14px; }
    .article-tag-link { background-color: var(--silver-white); font-size: 13px; color: var(--primary); padding: 5px 12px; border-radius: 6px; }
    .article-tag-link:hover { background-color: var(--primary); color: #FFF; }

    
    .prev-next-box { border-top: 1px solid var(--border-color); padding-top: 30px; margin-top: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .prev-next-item { display: flex; flex-direction: column; gap: 6px; }
    .prev-next-label { font-size: 12px; color: var(--text-muted); }
    .prev-next-title { font-size: 14px; font-weight: 700; color: var(--deep-sea-ink); }
    .prev-next-title:hover { color: var(--primary); }

    
    .related-section { margin-top: 50px; }
    .related-title { font-size: 20px; font-weight: 800; color: var(--deep-sea-ink); margin-bottom: 24px; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .related-card { background: #FFF; border: 1px solid var(--border-color); border-radius: 10px; padding: 20px; transition: var(--transition); }
    .related-card:hover { border-color: var(--primary); transform: translateY(-3px); }
    .related-card h4 { font-size: 15px; font-weight: 700; color: var(--deep-sea-ink); line-height: 1.4; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .related-card h4 a:hover { color: var(--primary); }
    .related-card span { font-size: 12px; color: var(--text-muted); }

    
    .sidebar { display: flex; flex-direction: column; gap: 30px; }
    .widget { background-color: #FFF; border: 1px solid var(--border-color); border-radius: 12px; padding: 24px; }
    .widget-title { font-size: 16px; font-weight: 700; color: var(--deep-sea-ink); border-left: 3px solid var(--primary); padding-left: 12px; margin-bottom: 20px; }
    .sidebar-posts { list-style: none; display: flex; flex-direction: column; gap: 16px; }
    .sidebar-posts-item { display: flex; gap: 12px; }
    .sidebar-posts-img { width: 64px; height: 64px; border-radius: 6px; overflow: hidden; background-color: var(--silver-white); flex-shrink: 0; }
    .sidebar-posts-img img { width: 100%; height: 100%; object-fit: cover; }
    .sidebar-posts-info { display: flex; flex-direction: column; justify-content: center; }
    .sidebar-posts-title { font-size: 14px; font-weight: 600; color: var(--deep-sea-ink); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .sidebar-posts-title:hover { color: var(--primary); }

    
    .footer { background-color: #0F172A; color: #94A3B8; padding: 80px 0 40px; border-top: 1px solid #1E293B; margin-top: 60px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
    .footer-col-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer .logo span { color: #FFF; }
    .footer-brand-desc { font-size: 14px; line-height: 1.7; }
    .footer-title { font-size: 16px; font-weight: 700; color: #F8FAFC; margin-bottom: 24px; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 14px; }
    .footer-links a { font-size: 14px; color: #94A3B8; }
    .footer-links a:hover { color: var(--glacier-blue); padding-left: 4px; }
    .footer-bottom { border-top: 1px solid #1E293B; padding-top: 40px; display: flex; align-items: center; justify-content: space-between; font-size: 13px; }

    @media (max-width: 991px) {
      .article-layout { grid-template-columns: 1fr; }
      .related-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .menu-toggle { display: flex; }
      .nav-menu { display: none; }
      .article-main { padding: 24px; }
      .article-title { font-size: 24px; }
      .prev-next-box { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }