:root {
      --primary: #1D7BFF;
      --primary-hover: #155ec2;
      --bg-dark: #0B132B;
      --bg-dark-accent: #1C2541;
      --bg-light: #F0F4F8;
      --text-dark: #1E293B;
      --text-light: #94A3B8;
      --border-color: rgb(229,231,235);
      --card-bg: #FFFFFF;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-light); color: var(--text-dark); line-height: 1.6; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; height: auto; }
    
    
    header { background-color: var(--bg-dark); border-bottom: 1px solid rgba(255,255,255,0.1); position: sticky; top: 0; z-index: 100; }
    .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; 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: #fff; white-space: nowrap; }
    
    nav.desktop-nav { display: flex; align-items: center; gap: 24px; }
    nav.desktop-nav a { color: rgba(255,255,255,0.8); font-size: 15px; font-weight: 500; }
    nav.desktop-nav a:hover { color: var(--primary); }
    .nav-cta { display: inline-flex; align-items: center; background-color: var(--primary); color: #fff; padding: 8px 16px; border-radius: 6px; font-weight: 600; font-size: 14px; }
    .nav-cta:hover { background-color: var(--primary-hover); }
    
    .menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; }
    
    
    .mobile-drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 1000; display: none; opacity: 0; transition: var(--transition); backdrop-filter: blur(4px); }
    .mobile-drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--bg-dark); color: #fff; z-index: 1001; transition: var(--transition); display: flex; flex-direction: column; padding: 20px; box-sizing: border-box; }
    .mobile-drawer.active { left: 0; }
    .mobile-drawer-overlay.active { display: block; opacity: 1; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 20px; }
    .drawer-close { background: none; border: none; color: #fff; font-size: 28px; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 16px; }
    .drawer-nav a { color: rgba(255,255,255,0.8); font-size: 16px; font-weight: 500; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .drawer-nav a:hover { color: var(--primary); }

    
    .breadcrumb-wrapper { background: #fff; border-bottom: 1px solid var(--border-color); padding: 15px 20px; }
    .breadcrumbs { max-width: 1200px; margin: 0 auto; font-size: 14px; color: var(--text-light); display: flex; align-items: center; gap: 8px; }
    .breadcrumbs a:hover { color: var(--primary); }

    
    .article-container { max-width: 900px; margin: 40px auto; padding: 0 20px; }
    .article-header { margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 24px; }
    .article-header h1 { font-size: 32px; font-weight: 800; color: var(--bg-dark); line-height: 1.3; margin-bottom: 15px; }
    .article-header-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--text-light); }
    .article-header-meta span { display: inline-flex; align-items: center; gap: 6px; }
    .article-header-meta a { color: var(--primary); font-weight: 600; }

    
    .article-body { background: #fff; border-radius: 12px; border: 1px solid var(--border-color); padding: 40px; margin-bottom: 40px; font-size: 16px; line-height: 1.8; color: var(--text-dark); }
    .article-body p { margin-bottom: 20px; }
    .article-body h2, .article-body h3 { color: var(--bg-dark); font-weight: 700; margin: 35px 0 15px 0; }
    .article-body h2 { font-size: 22px; border-left: 4px solid var(--primary); padding-left: 12px; }
    .article-body h3 { font-size: 18px; }
    .article-body img { border-radius: 8px; display: block; margin: 30px auto; box-shadow: 0 10px 25px rgba(0,0,0,0.05); }

    
    .article-nav { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); padding: 20px 0; margin-bottom: 40px; font-size: 14px; }
    .article-nav a { max-width: 48%; }
    .article-nav a span { display: block; font-size: 12px; color: var(--text-light); margin-bottom: 4px; }
    .article-nav a:hover { color: var(--primary); }

    
    .related-section { margin-top: 50px; }
    .related-section h3 { font-size: 22px; font-weight: 800; color: var(--bg-dark); margin-bottom: 24px; }
    .related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
    .related-card { background: #fff; border: 1px solid var(--border-color); border-radius: 10px; padding: 20px; display: flex; flex-direction: column; transition: var(--transition); }
    .related-card:hover { transform: translateY(-3px); border-color: var(--primary); }
    .related-card h4 { font-size: 16px; font-weight: 700; line-height: 1.4; margin-bottom: 12px; }
    .related-card h4 a:hover { color: var(--primary); }
    .related-card-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-light); margin-top: auto; }

    
    .bottom-block-placeholder { background-color: rgba(29,123,255,0.05); border: 1px dashed var(--primary); padding: 20px; border-radius: 8px; margin-bottom: 40px; font-size: 14px; color: var(--text-dark); text-align: center; }

    
    footer { background-color: var(--bg-dark); color: #fff; padding: 60px 20px 30px 20px; font-size: 14px; border-top: 1px solid rgba(255,255,255,0.05); }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .footer-brand { grid-column: span 2; }
    .footer-brand p { color: var(--text-light); margin-top: 15px; line-height: 1.6; max-width: 320px; }
    .footer-group h4 { font-size: 16px; font-weight: 700; margin-bottom: 20px; color: #fff; }
    .footer-group ul { list-style: none; }
    .footer-group ul li { margin-bottom: 12px; }
    .footer-group ul li a { color: var(--text-light); }
    .footer-group ul li a:hover { color: var(--primary); }
    .footer-bottom { max-width: 1200px; margin: 40px auto 0 auto; display: flex; justify-content: space-between; align-items: center; color: var(--text-light); flex-wrap: wrap; gap: 20px; }

    @media (max-width: 768px) {
      .desktop-nav { display: none; }
      .menu-toggle { display: block; }
      .article-body { padding: 20px; }
    }