:root {
      --primary: rgb(239, 68, 68);
      --tech-blue: #1D7BFF;
      --tech-dark: #0A0F1D;
      --tech-light: #F4F7FC;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --white: #FFFFFF;
      --bg-gradient: linear-gradient(135deg, #0A0F1D 0%, #151D35 100%);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background-color: #F8FAFC; color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    ul { list-style: none; }
    img { max-width: 100%; height: auto; }
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

    
    header { background-color: #0B1120; border-bottom: 1px solid rgba(255, 255, 255, 0.1); position: sticky; top: 0; z-index: 1000; height: 72px; display: flex; align-items: center; }
    .header-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
    .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: 18px; font-weight: 800; line-height: 1; color: var(--white); white-space: nowrap; }
    .nav-list { display: flex; gap: 32px; align-items: center; }
    .nav-list a { color: rgba(255, 255, 255, 0.8); font-size: 15px; font-weight: 500; }
    .nav-list a:hover { color: var(--tech-blue); }
    .mobile-menu-btn { display: none; background: none; border: none; color: var(--white); cursor: pointer; padding: 4px; }

    
    .drawer-backdrop { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0, 0, 0, 0.6); z-index: 2000; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
    .drawer-backdrop.active { opacity: 1; pointer-events: auto; }
    .mobile-drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100vh; background: #0F172A; z-index: 2001; padding: 24px; display: flex; flex-direction: column; gap: 32px; transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5); }
    .mobile-drawer.active { left: 0; }
    .drawer-header { display: flex; justify-content: space-between; align-items: center; }
    .drawer-close { background: none; border: none; color: var(--white); font-size: 24px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-nav a { color: rgba(255, 255, 255, 0.9); font-size: 16px; font-weight: 500; display: block; padding: 10px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.05); }

    
    .page-banner { background: var(--bg-gradient); color: var(--white); padding: 60px 0; text-align: center; }
    .page-banner h1 { font-size: 32px; font-weight: 800; margin-bottom: 10px; }
    .breadcrumb { font-size: 14px; color: rgba(255, 255, 255, 0.6); display: flex; justify-content: center; gap: 8px; }
    .breadcrumb a:hover { color: var(--tech-blue); }

    
    .main-section { padding: 60px 0; }
    .content-wrapper { display: grid; grid-template-columns: 2.5fr 1fr; gap: 40px; }

    
    .articles-list { display: flex; flex-direction: column; gap: 30px; }
    .horizontal-card { display: grid; grid-template-columns: 300px 1fr; background: var(--white); border-radius: 12px; border: 1px solid #E2E8F0; overflow: hidden; transition: transform 0.3s ease; }
    .horizontal-card:hover { transform: translateY(-4px); }
    .card-img-container { height: 100%; min-height: 200px; background-color: #E2E8F0; }
    .card-img-container img { width: 100%; height: 100%; object-fit: cover; }
    .card-body { padding: 24px; display: flex; flex-direction: column; justify-content: space-between; }
    .card-meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 16px; margin-bottom: 12px; }
    .card-title { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; line-height: 1.4; }
    .card-summary { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 20px; }
    .card-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #F1F5F9; padding-top: 15px; }
    .tag-link { background: #F1F5F9; color: var(--text-muted); padding: 4px 12px; border-radius: 4px; font-size: 13px; }

    
    .sidebar { display: flex; flex-direction: column; gap: 40px; }
    .sidebar-widget { background: var(--white); border-radius: 12px; padding: 24px; border: 1px solid #E2E8F0; }
    .widget-title { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 20px; border-left: 4px solid var(--primary); padding-left: 12px; }
    .widget-list { display: flex; flex-direction: column; gap: 16px; }
    .widget-item { border-bottom: 1px solid #F1F5F9; padding-bottom: 12px; }
    .widget-item a { font-size: 14px; font-weight: 600; color: var(--text-main); line-height: 1.4; display: block; }
    .widget-item a:hover { color: var(--primary); }

    
    .pagination { display: flex; gap: 8px; justify-content: center; margin-top: 50px; }
    .pagination a, .pagination span { padding: 10px 16px; border-radius: 6px; border: 1px solid #E2E8F0; background: var(--white); color: var(--text-main); font-weight: 600; }
    .pagination .active { background: var(--primary); color: var(--white); border-color: var(--primary); }

    
    footer { background-color: #0F172A; color: rgba(255, 255, 255, 0.7); padding: 60px 0 30px 0; border-top: 1px solid rgba(255, 255, 255, 0.1); }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
    .footer-brand { display: flex; flex-direction: column; gap: 16px; }
    .footer-brand .logo span { color: var(--white); }
    .footer-brand p { font-size: 14px; line-height: 1.6; }
    .footer-col h4 { color: var(--white); font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .footer-col ul { display: flex; flex-direction: column; gap: 12px; }
    .footer-col a { font-size: 14px; }
    .footer-col a:hover { color: var(--white); }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.05); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; font-size: 13px; }

    @media (max-width: 1024px) {
      .content-wrapper { grid-template-columns: 1fr; }
      .horizontal-card { grid-template-columns: 240px 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-list { display: none; }
      .mobile-menu-btn { display: block; }
      .horizontal-card { grid-template-columns: 1fr; }
      .card-img-container { height: 180px; }
      .footer-grid { grid-template-columns: 1fr; }
    }