:root {
      --primary: #1D7BFF;
      --primary-hover: #0052D4;
      --deep-bg: #0B0E11;
      --base-bg: rgb(243,244,246);
      --card-bg: #ffffff;
      --text-dark: #1E2329;
      --text-gray: #474D57;
      --text-light: #707A8A;
      --silver: #EAECEF;
    }
    * { 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(--base-bg); color: var(--text-dark); line-height: 1.6; }
    a { text-decoration: none; color: inherit; transition: 0.3s; }
    
    
    .header { background: var(--deep-bg); color: #ffffff; position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(255,255,255,0.1); }
    .header-container { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 15px 20px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { display: block; height: 36px; width: auto; max-width: 160px; object-fit: contain; }
    .logo span { font-size: 18px; font-weight: 800; color: #ffffff; }
    .nav-desktop { display: flex; align-items: center; gap: 24px; }
    .nav-desktop a { color: #eaecef; font-size: 15px; font-weight: 500; }
    .nav-desktop a:hover { color: var(--primary); }
    .menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; }
    .menu-toggle span { display: block; width: 25px; height: 2px; background: #ffffff; }
    
    
    .drawer-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 2000; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--deep-bg); z-index: 2001; transition: 0.3s ease; padding: 20px; }
    .drawer.active { left: 0; }
    .drawer-overlay.active { display: block; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 15px; margin-bottom: 20px; }
    .drawer-close { background: none; border: none; color: #ffffff; font-size: 28px; cursor: pointer; }
    .drawer-nav a { display: block; color: #eaecef; font-size: 16px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }

    
    .container { max-width: 1200px; margin: 40px auto; padding: 0 20px; display: grid; grid-template-columns: 2.5fr 1fr; gap: 40px; }
    
    
    .breadcrumb { grid-column: 1 / -1; font-size: 14px; color: var(--text-gray); margin-bottom: 10px; }
    .breadcrumb a { color: var(--primary); }
    .breadcrumb span { margin: 0 8px; }

    
    .article-wrap { background: #ffffff; padding: 40px; border-radius: 16px; border: 1px solid var(--silver); }
    .article-header { border-bottom: 1px solid var(--silver); padding-bottom: 25px; margin-bottom: 30px; }
    .article-header h1 { font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 15px; color: var(--text-dark); }
    .article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--text-light); }
    .meta-item { display: flex; align-items: center; gap: 6px; }

    .article-content { font-size: 16px; color: var(--text-dark); line-height: 1.8; }
    .article-content p { margin-bottom: 24px; }
    .article-content h2 { font-size: 22px; font-weight: 700; margin: 35px 0 15px 0; border-left: 4px solid var(--primary); padding-left: 12px; }
    .article-content img { display: block; max-width: 100%; border-radius: 8px; margin: 30px auto; }
    
    .article-footer-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 40px; padding-top: 20px; border-top: 1px dashed var(--silver); }
    .article-footer-tags span { font-weight: 600; color: var(--text-gray); }
    .article-footer-tags a { font-size: 13px; background: rgba(29,123,255,0.08); color: var(--primary); padding: 4px 12px; border-radius: 6px; }

    
    .prev-next-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding-top: 25px; border-top: 1px solid var(--silver); flex-wrap: wrap; }
    .nav-link-box { flex: 1; min-width: 250px; background: var(--base-bg); padding: 15px 20px; border-radius: 8px; border: 1px solid var(--silver); }
    .nav-link-box small { display: block; font-size: 11px; color: var(--text-light); margin-bottom: 5px; }
    .nav-link-box a { font-size: 14px; font-weight: 600; display: block; }
    .nav-link-box a:hover { color: var(--primary); }

    
    .related-section { margin-top: 50px; }
    .related-title { font-size: 20px; font-weight: 700; margin-bottom: 25px; }
    .related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .related-card { background: #ffffff; border: 1px solid var(--silver); padding: 20px; border-radius: 10px; transition: 0.3s; }
    .related-card:hover { transform: translateY(-2px); border-color: var(--primary); }
    .related-card h4 { font-size: 15px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }

    
    .sidebar { display: flex; flex-direction: column; gap: 40px; }
    .widget { background: #ffffff; padding: 30px; border-radius: 12px; border: 1px solid var(--silver); }
    .widget-title { font-size: 18px; font-weight: 700; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); color: var(--text-dark); }
    .hot-list { display: flex; flex-direction: column; gap: 15px; }
    .hot-item { display: flex; gap: 12px; align-items: center; }
    .hot-num { font-size: 16px; font-weight: 800; color: var(--text-light); width: 24px; text-align: center; }
    .hot-title { font-size: 14px; font-weight: 600; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

    
    .footer { background: var(--deep-bg); color: #ffffff; padding: 80px 20px 40px 20px; border-top: 1px solid rgba(255,255,255,0.1); margin-top: 80px; }
    .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; margin-bottom: 60px; }
    .footer-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer-brand p { color: #8491A5; font-size: 14px; line-height: 1.6; }
    .footer-col h4 { font-size: 16px; font-weight: 700; margin-bottom: 20px; color: #ffffff; }
    .footer-col ul { display: flex; flex-direction: column; gap: 12px; }
    .footer-col a { color: #8491A5; font-size: 14px; }
    .footer-col a:hover { color: var(--primary); padding-left: 5px; }
    .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; flex-wrap: wrap; gap: 20px; color: #8491A5; font-size: 13px; }

    @media (max-width: 992px) {
      .container { grid-template-columns: 1fr; }
      .related-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .nav-desktop { display: none; }
      .menu-toggle { display: flex; }
      .article-wrap { padding: 25px; }
      .footer-container { grid-template-columns: 1fr; }
    }