:root {
      --primary-color: rgb(14,116,144);
      --primary-hover: rgb(11,90,113);
      --glacier-blue: #1D7BFF;
      --silver-white: #F8FAFC;
      --deep-ocean: #0B132B;
      --ocean-ink: #1C2541;
      --text-main: #334155;
      --text-muted: #64748B;
      --bg-light: #F1F5F9;
      --border-color: #E2E8F0;
    }
    * { 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-color: var(--silver-white); line-height: 1.6; }
    a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
    
    
    .site-header { background: #ffffff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; height: 70px; }
    .header-container { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 100%; 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: 18px; font-weight: 800; line-height: 1; color: var(--primary-color); white-space: nowrap; }
    
    .desktop-nav { display: flex; align-items: center; gap: 24px; }
    .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-main); padding: 8px 12px; border-radius: 6px; }
    .desktop-nav a:hover { color: var(--primary-color); background: var(--bg-light); }
    
    .menu-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--text-main); cursor: pointer; }
    
    
    .mobile-drawer { position: fixed; top: 0; left: -100%; width: 100%; height: 100%; z-index: 2000; transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); display: flex; }
    .mobile-drawer.active { left: 0; }
    .drawer-backdrop { position: absolute; width: 100%; height: 100%; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); }
    .drawer-content { position: relative; width: 80%; max-width: 300px; height: 100%; background: #ffffff; display: flex; flex-direction: column; padding: 20px; box-shadow: 4px 0 20px rgba(0,0,0,0.15); }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }
    .close-drawer { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-muted); }
    .drawer-nav { display: flex; flex-direction: column; gap: 16px; overflow-y: auto; }
    .drawer-nav a { font-size: 16px; font-weight: 600; padding: 10px 15px; border-radius: 8px; color: var(--text-main); }
    .drawer-nav a:hover { background: var(--bg-light); color: var(--primary-color); }

    
    .breadcrumb-section { max-width: 1200px; margin: 30px auto 0 auto; padding: 0 20px; font-size: 14px; color: var(--text-muted); }
    .breadcrumb-section a:hover { text-decoration: underline; color: var(--primary-color); }

    
    .article-container { max-width: 1200px; margin: 30px auto; padding: 0 20px; display: grid; grid-template-columns: 2.5fr 1fr; gap: 40px; }
    
    .article-main-body { background: #ffffff; border-radius: 12px; border: 1px solid var(--border-color); padding: 40px; }
    .article-header { border-bottom: 1px solid var(--border-color); padding-bottom: 24px; margin-bottom: 30px; }
    .article-title { font-size: 30px; font-weight: 800; color: var(--deep-ocean); line-height: 1.3; margin-bottom: 20px; }
    
    
    .article-meta-info { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--text-muted); }
    .meta-item { display: flex; align-items: center; gap: 6px; }
    .meta-item strong { color: var(--text-main); }

    
    .article-meta-tags { margin-top: 15px; display: flex; flex-wrap: wrap; gap: 8px; }
    .article-meta-tags a { font-size: 12px; background: rgba(14,116,144,0.06); color: var(--primary-color); padding: 4px 10px; border-radius: 4px; font-weight: 600; }
    .article-meta-tags a:hover { background: var(--primary-color); color: #ffffff; }

    
    .article-rich-text { font-size: 16px; color: #1E293B; line-height: 1.8; word-wrap: break-word; }
    .article-rich-text p { margin-bottom: 24px; text-indent: 2em; }
    .article-rich-text h2, .article-rich-text h3 { color: var(--deep-ocean); margin: 35px 0 20px 0; font-weight: 700; line-height: 1.4; }
    .article-rich-text img { border-radius: 8px; margin: 20px auto; display: block; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }

    
    .prev-next-links { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--border-color); padding-top: 30px; margin-top: 50px; flex-wrap: wrap; }
    .prev-next-item { flex: 1; min-width: 240px; background: var(--bg-light); padding: 20px; border-radius: 8px; }
    .prev-next-label { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 5px; text-transform: uppercase; }
    .prev-next-title { font-size: 14px; font-weight: 700; color: var(--deep-ocean); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
    .prev-next-item:hover { background: var(--border-color); }

    
    .sidebar { display: flex; flex-direction: column; gap: 30px; }
    .sidebar-widget { background: #ffffff; border-radius: 12px; border: 1px solid var(--border-color); padding: 24px; }
    .widget-title { font-size: 16px; font-weight: 700; color: var(--deep-ocean); margin-bottom: 15px; padding-left: 10px; border-left: 4px solid var(--primary-color); }
    
    .related-articles-list { display: flex; flex-direction: column; gap: 15px; }
    .related-article-card { display: flex; gap: 12px; align-items: center; border-bottom: 1px solid var(--bg-light); padding-bottom: 15px; }
    .related-article-card:last-child { border: none; padding: 0; }
    .related-img { width: 60px; height: 60px; object-fit: cover; border-radius: 4px; background: #E2E8F0; }
    .related-title { font-size: 14px; font-weight: 700; color: var(--deep-ocean); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

    
    .site-footer { background: var(--deep-ocean); color: #94A3B8; padding: 60px 20px 30px 20px; border-top: 1px solid #1E293B; font-size: 14px; margin-top: 80px; }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand { display: flex; flex-direction: column; gap: 15px; }
    .footer-brand .logo span { color: #ffffff; }
    .footer-brand p { font-size: 13px; line-height: 1.6; max-width: 320px; }
    .footer-links-group h4 { color: #ffffff; font-size: 15px; font-weight: 700; margin-bottom: 20px; }
    .footer-links-group ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
    .footer-links-group a { color: #94A3B8; }
    .footer-links-group a:hover { color: #ffffff; }
    .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.08); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; font-size: 12px; }
    .footer-seo-links { display: flex; gap: 15px; flex-wrap: wrap; }

    @media (max-width: 992px) {
      .article-container { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .desktop-nav { display: none; }
      .menu-toggle { display: block; }
      .footer-container { grid-template-columns: 1fr; gap: 30px; }
    }