:root {
      --primary: #1D7BFF;
      --primary-hover: #1062d4;
      --theme-color: rgb(68,71,90);
      --glacier-blue: #E0F2FE;
      --silver-white: #F8FAFC;
      --deep-sea-ink: #0F172A;
      --text-dark: #0F172A;
      --text-light: #F8FAFC;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --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(--silver-white); color: var(--text-dark); line-height: 1.6; }
    a { color: inherit; text-decoration: none; }
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    
    
    .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-dark); white-space: nowrap; }

    
    .site-header { background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
    .header-container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
    .desktop-nav { display: flex; align-items: center; gap: 30px; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-dark); transition: color 0.3s ease; }
    .desktop-nav a:hover, .desktop-nav a.active { color: var(--primary); }
    .header-right { display: flex; align-items: center; gap: 15px; }
    .btn-nav-action { background-color: var(--primary); color: white; padding: 8px 20px; border-radius: 6px; font-size: 14px; font-weight: 600; }
    .drawer-trigger { display: none; flex-direction: column; justify-content: space-between; width: 24px; height: 18px; background: transparent; border: none; cursor: pointer; }
    .drawer-trigger span { display: block; width: 100%; height: 2px; background-color: var(--text-dark); }

    
    .mobile-drawer { position: fixed; top: 0; left: -100%; width: 100%; height: 100%; z-index: 2000; transition: left 0.4s ease; }
    .mobile-drawer.active { left: 0; }
    .drawer-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px); }
    .drawer-content { position: absolute; top: 0; left: 0; width: 300px; height: 100%; background-color: white; padding: 24px; display: flex; flex-direction: column; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
    .drawer-close { background: none; border: none; font-size: 28px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; margin-bottom: auto; }
    .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-dark); padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,0.05); }
    .drawer-footer { border-top: 1px solid rgba(0,0,0,0.1); padding-top: 20px; text-align: center; font-size: 14px; color: var(--text-muted); }

    
    .crumb-bar { background: #f1f5f9; padding: 15px 0; border-bottom: 1px solid var(--border-color); font-size: 14px; }
    .crumb-bar a { color: var(--text-muted); transition: color 0.3s; }
    .crumb-bar a:hover { color: var(--primary); }

    
    .art-detail-grid { display: grid; grid-template-columns: 2.5fr 1fr; gap: 40px; padding: 60px 0; }
    .art-detail-card { background: white; border: 1px solid var(--border-color); border-radius: 12px; padding: 40px; }
    .art-detail-header { margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 24px; }
    .art-detail-header h1 { font-size: 28px; font-weight: 700; margin-bottom: 15px; color: var(--text-dark); line-height: 1.3; }
    .art-detail-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--text-muted); }
    .art-detail-meta span { display: flex; align-items: center; gap: 6px; }

    .art-detail-body { font-size: 15px; color: #334155; line-height: 1.8; }
    .art-detail-body p { margin-bottom: 20px; }
    .art-detail-body h2, .art-detail-body h3 { color: var(--text-dark); margin: 30px 0 15px; font-weight: 700; }
    
    .art-detail-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border-color); }
    .art-detail-tags a { font-size: 12px; padding: 4px 10px; background-color: var(--glacier-blue); color: var(--primary); border-radius: 4px; }

    
    .prev-next-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border-color); }
    .prev-next-item { flex: 1; }
    .prev-next-item span { font-size: 11px; color: var(--text-muted); display: block; margin-bottom: 4px; }
    .prev-next-item a { font-size: 14px; font-weight: 600; color: var(--text-dark); transition: color 0.3s; }
    .prev-next-item a:hover { color: var(--primary); }

    
    .related-articles { margin-top: 50px; }
    .related-articles h3 { font-size: 20px; margin-bottom: 24px; }
    .related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .related-card { background: white; border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; display: flex; flex-direction: column; justify-content: space-between; }
    .related-card h4 { font-size: 15px; margin-bottom: 10px; line-height: 1.4; }
    .related-card a { transition: color 0.3s; }
    .related-card a:hover { color: var(--primary); }
    .related-meta { font-size: 12px; color: var(--text-muted); display: flex; justify-content: space-between; }

    
    .sidebar-widget { background: white; border: 1px solid var(--border-color); border-radius: 8px; padding: 24px; margin-bottom: 30px; }
    .widget-title { font-size: 16px; font-weight: 700; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); }
    .sidebar-hot-list { display: flex; flex-direction: column; gap: 15px; }
    .sidebar-hot-item { display: flex; align-items: center; gap: 12px; }
    .sidebar-hot-num { width: 24px; height: 24px; background: #f1f5f9; color: var(--text-muted); font-size: 12px; font-weight: 600; border-radius: 40px; display: flex; align-items: center; justify-content: center; }
    .sidebar-hot-item:nth-child(1) .sidebar-hot-num { background: #ef4444; color: white; }
    .sidebar-hot-item:nth-child(2) .sidebar-hot-num { background: #eab308; color: white; }
    .sidebar-hot-item:nth-child(3) .sidebar-hot-num { background: #3b82f6; color: white; }
    .sidebar-hot-title { font-size: 13px; font-weight: 500; line-height: 1.4; }

    
    .site-footer { background-color: var(--deep-sea-ink); color: #94a3b8; padding: 80px 0 30px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-container { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
    .footer-brand .logo span { color: white; }
    .footer-desc { font-size: 13px; margin: 20px 0; }
    .footer-contact { font-size: 13px; color: #cbd5e1; display: flex; flex-direction: column; gap: 8px;}
    .footer-group h4 { color: white; font-size: 15px; font-weight: 600; margin-bottom: 20px; }
    .footer-group ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .footer-group ul a { font-size: 13px; }
    .footer-group ul a:hover { color: var(--primary); }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; }
    .footer-bottom-container { display: flex; justify-content: space-between; align-items: center; }
    .copyright { font-size: 13px; }
    .risk-warning { font-size: 11px; color: #64748b; max-width: 600px; text-align: right; line-height: 1.5; }

    @media (max-width: 1024px) {
      .art-detail-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .desktop-nav, .header-right .btn-nav-action { display: none; }
      .drawer-trigger { display: flex; }
      .art-detail-card { padding: 24px; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-container { grid-template-columns: 1fr; }
      .footer-bottom-container { flex-direction: column; text-align: center; }
      .risk-warning { text-align: center; margin-top: 15px; }
    }