:root {
      --primary-color: #1D7BFF;
      --secondary-color: #00F0FF;
      --dark-bg: rgb(31,41,55);
      --darker-bg: #111827;
      --light-bg: #F3F4F6;
      --silver-white: #F9FAFB;
      --text-main: #111827;
      --text-muted: #6B7280;
      --border-color: #E5E7EB;
      --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
      --glass-border: rgba(255, 255, 255, 0.1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--text-main); background: var(--silver-white); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.3s; }

    
    .header { background: var(--dark-bg); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--glass-border); }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; color: #FFF; }
    .nav-menu { display: flex; align-items: center; gap: 24px; }
    .nav-menu a { color: rgba(255,255,255,0.8); font-size: 15px; font-weight: 500; }
    .nav-menu a:hover { color: var(--secondary-color); }
    .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(0,0,0,0.5); z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--dark-bg); z-index: 1001; transition: left 0.3s ease; }
    .drawer-header { padding: 20px; border-bottom: 1px solid var(--glass-border); display: flex; align-items: center; justify-content: space-between; }
    .drawer-close { background: none; border: none; color: #FFF; font-size: 24px; cursor: pointer; }
    .drawer-content { flex: 1; overflow-y: auto; padding: 20px; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-nav a { color: #FFF; font-size: 16px; font-weight: 500; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .drawer-overlay.active { opacity: 1; pointer-events: auto; }
    .drawer.active { left: 0; }

    
    .cat-hero { background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%); color: #FFF; padding: 60px 20px; text-align: center; }
    .cat-container { max-width: 800px; margin: 0 auto; }
    .cat-container h1 { font-size: 32px; font-weight: 800; margin-bottom: 15px; }
    .cat-container p { color: rgba(255,255,255,0.7); font-size: 15px; }

    
    .list-layout { max-width: 1200px; margin: 50px auto; padding: 0 20px; display: grid; grid-template-columns: 2.5fr 1fr; gap: 40px; }
    .articles-list { display: flex; flex-direction: column; gap: 30px; }
    
    
    .list-card { background: #FFF; border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; display: flex; transition: all 0.3s; box-shadow: var(--card-shadow); }
    .list-card:hover { transform: translateY(-3px); box-shadow: 0 15px 30px rgba(0,0,0,0.08); }
    .list-img { width: 240px; min-width: 240px; background: #E5E7EB; overflow: hidden; }
    .list-img img { width: 100%; height: 100%; object-fit: cover; }
    .list-body { padding: 25px; display: flex; flex-direction: column; justify-content: space-between; }
    .list-meta { display: flex; gap: 20px; font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
    .list-title { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
    .list-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.5; }
    .list-footer { display: flex; justify-content: space-between; align-items: center; font-size: 13px; border-top: 1px solid var(--border-color); padding-top: 15px; }
    .list-tags { color: var(--primary-color); font-weight: 600; }

    
    .sidebar { display: flex; flex-direction: column; gap: 30px; }
    .widget { background: #FFF; border: 1px solid var(--border-color); border-radius: 12px; padding: 25px; }
    .widget-title { font-size: 16px; font-weight: 700; border-left: 4px solid var(--primary-color); padding-left: 10px; margin-bottom: 20px; }
    .hot-list { display: flex; flex-direction: column; gap: 15px; }
    .hot-item { display: flex; gap: 12px; align-items: center; }
    .hot-num { font-size: 18px; font-weight: 800; color: var(--primary-color); width: 24px; }
    .hot-info h4 { font-size: 13px; font-weight: 600; line-height: 1.4; }

    
    .pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
    .pagination a, .pagination span { padding: 8px 16px; border: 1px solid var(--border-color); border-radius: 6px; font-size: 14px; background: #FFF; }
    .pagination .active { background: var(--primary-color); color: #FFF; border-color: var(--primary-color); }
    .pagination .disabled { color: var(--text-muted); cursor: not-allowed; opacity: 0.5; }

    
    .footer { background: var(--darker-bg); color: rgba(255,255,255,0.6); padding: 80px 20px 40px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 60px; }
    .footer-brand .logo { margin-bottom: 20px; }
    .footer-brand .logo span { color: #FFF; }
    .footer-desc { font-size: 13px; line-height: 1.6; margin-bottom: 20px; }
    .footer-title { font-size: 15px; font-weight: 700; color: #FFF; margin-bottom: 20px; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 12px; }
    .footer-links a { font-size: 13px; color: rgba(255,255,255,0.6); }
    .footer-links a:hover { color: var(--primary-color); }
    .footer-contact p { font-size: 13px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
    .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.05); display: flex; justify-content: space-between; align-items: center; font-size: 12px; flex-wrap: wrap; gap: 15px; }

    @media (max-width: 991px) {
      .nav-menu { display: none; }
      .menu-toggle { display: block; }
      .list-layout { grid-template-columns: 1fr; }
      .footer-container { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .list-card { flex-direction: column; }
      .list-img { width: 100%; height: 180px; }
      .footer-container { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }