:root {
      --primary: rgb(79,70,229);
      --primary-hover: rgb(67,56,202);
      --accent: #1D7BFF;
      --bg-dark: #0F172A;
      --bg-light: #F8FAFC;
      --text-dark: #0F172A;
      --text-light: #F8FAFC;
      --gray-100: #F1F5F9;
      --gray-200: #E2E8F0;
      --gray-600: #475569;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --shadow: 0 10px 30px -10px rgba(79, 70, 229, 0.15);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: var(--font-sans); color: var(--text-dark); background: #FFF; line-height: 1.6; }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; height: auto; }
    ul { list-style: none; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    
    .site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-200); }
    .header-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
    .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: 20px; font-weight: 800; color: var(--text-dark); white-space: nowrap; }
    .desktop-nav { display: flex; gap: 32px; }
    .desktop-nav a { font-size: 15px; font-weight: 600; color: var(--gray-600); }
    .desktop-nav a:hover { color: var(--primary); }
    .menu-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; }
    .menu-toggle .bar { width: 24px; height: 2px; background: var(--text-dark); }

    
    .mobile-drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 101; opacity: 0; visibility: hidden; transition: 0.3s; }
    .mobile-drawer-overlay.active { opacity: 1; visibility: visible; }
    .mobile-drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: #FFF; z-index: 102; transition: 0.3s; padding: 24px; }
    .mobile-drawer.active { left: 0; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
    .drawer-close { font-size: 28px; background: none; border: none; }
    .mobile-nav { display: flex; flex-direction: column; gap: 20px; }
    .mobile-nav a { font-size: 16px; font-weight: 600; color: var(--gray-600); padding-bottom: 8px; border-bottom: 1px solid var(--gray-100); }

    
    .breadcrumb-section { background: var(--bg-light); padding: 16px 0; border-bottom: 1px solid var(--gray-200); }
    .breadcrumbs { font-size: 14px; color: var(--gray-600); }
    .breadcrumbs a { transition: color 0.2s; }
    .breadcrumbs a:hover { color: var(--primary); }
    .breadcrumbs span { margin: 0 8px; color: var(--gray-200); }

    
    .article-wrapper { padding: 60px 0; }
    .article-layout { display: grid; grid-template-columns: 8fr 4fr; gap: 40px; }
    
    .article-main-body { background: #FFF; border-radius: 12px; }
    .article-header { border-bottom: 1px solid var(--gray-200); padding-bottom: 30px; margin-bottom: 36px; }
    .article-header h1 { font-size: 32px; font-weight: 800; line-height: 1.3; color: var(--text-dark); margin-bottom: 20px; }
    .article-meta-info { display: flex; flex-wrap: wrap; gap: 24px; font-size: 14px; color: var(--gray-600); }
    .meta-item { display: inline-flex; align-items: center; gap: 6px; }

    
    .article-content { font-size: 16px; line-height: 1.8; color: #334155; }
    .article-content p { margin-bottom: 24px; }
    .article-content h2, .article-content h3 { color: var(--text-dark); font-weight: 700; margin: 40px 0 20px; }
    .article-content h2 { font-size: 24px; border-left: 5px solid var(--primary); padding-left: 15px; }
    .article-content h3 { font-size: 20px; }
    .article-content img { display: block; max-width: 100%; border-radius: 8px; margin: 30px auto; }
    .article-content blockquote { border-left: 4px solid var(--accent); background: var(--bg-light); padding: 16px 24px; margin: 30px 0; font-style: italic; color: var(--gray-600); }

    
    .article-tags-wrap { margin-top: 40px; border-top: 1px solid var(--gray-100); padding-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }
    .article-single-tag { font-size: 13px; font-weight: 600; color: var(--primary); background: var(--gray-100); padding: 6px 14px; border-radius: 6px; transition: 0.2s; }
    .article-single-tag:hover { background: var(--primary); color: #FFF; }

    
    .prev-next-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--gray-200); }
    .pn-card { display: flex; flex-direction: column; gap: 6px; padding: 20px; background: var(--bg-light); border: 1px solid var(--gray-200); border-radius: 8px; }
    .pn-card span { font-size: 12px; color: var(--gray-600); text-transform: uppercase; }
    .pn-card a { font-size: 15px; font-weight: 700; line-height: 1.4; color: var(--text-dark); transition: color 0.2s; }
    .pn-card a:hover { color: var(--primary); }

    
    .article-sidebar { display: flex; flex-direction: column; gap: 40px; }
    .sidebar-widget { background: var(--bg-light); border: 1px solid var(--gray-200); border-radius: 12px; padding: 24px; }
    .sidebar-widget h3 { font-size: 16px; font-weight: 700; margin-bottom: 20px; border-left: 4px solid var(--primary); padding-left: 12px; }
    
    .recommend-item { display: flex; gap: 12px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--gray-200); }
    .recommend-item:last-child { margin-bottom: 0; padding-bottom: 0; border: none; }
    .recommend-thumb { width: 72px; height: 72px; border-radius: 6px; overflow: hidden; flex-shrink: 0; }
    .recommend-thumb img { width: 100%; height: 100%; object-fit: cover; }
    .recommend-title { font-size: 14px; font-weight: 600; line-height: 1.4; }
    .recommend-title a:hover { color: var(--primary); }

    
    .site-footer { background: #0B0F19; color: #94A3B8; padding: 80px 0 30px; border-top: 1px solid #1E293B; }
    .footer-container { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 60px; }
    .footer-brand .logo span { color: #FFF; }
    .footer-desc { margin-top: 20px; font-size: 14px; line-height: 1.7; }
    .site-footer h4 { color: #FFF; font-size: 16px; font-weight: 700; margin-bottom: 24px; }
    .site-footer ul li { margin-bottom: 12px; }
    .site-footer ul li a:hover { color: #FFF; }
    .footer-bottom { border-top: 1px solid #1E293B; padding-top: 30px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }

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