:root {
      --primary: #1D7BFF;
      --bg-dark: #0B192C;
      --bg-deep: #050C16;
      --bg-light: #F5F7FA;
      --text-main: #FFFFFF;
      --text-muted: #A3D0FC;
      --text-dark: #0B192C;
      --text-desc: #6F7D8C;
      --accent-blue: #A3D0FC;
      --border-color: rgba(29, 123, 255, 0.15);
      --glass-bg: rgba(11, 25, 44, 0.7);
      --glass-border: rgba(29, 123, 255, 0.25);
      --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background: var(--bg-deep); color: var(--text-main); overflow-x: hidden; line-height: 1.6; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; height: auto; }
    ul { list-style: none; }
    
    
    .header { background: var(--glass-bg); backdrop-filter: blur(12px); border-bottom: 1px solid var(--glass-border); position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; height: 70px; display: flex; align-items: center; }
    .header-container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; display: flex; justify-content: space-between; align-items: center; }
    .logo { display: inline-flex; align-items: center; gap: 12px; }
    .logo img { height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
    .logo span { font-size: 20px; font-weight: 800; color: #FFFFFF; white-space: nowrap; letter-spacing: 0.5px; }
    .nav-desktop { display: flex; gap: 30px; }
    .nav-desktop a { font-size: 15px; font-weight: 500; color: var(--text-muted); position: relative; padding: 8px 0; }
    .nav-desktop a:hover, .nav-desktop a.active { color: #FFFFFF; }
    .nav-desktop a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
    .nav-desktop a:hover::after, .nav-desktop a.active::after { width: 100%; }
    .nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; z-index: 1010; }
    .nav-toggle span { display: block; width: 24px; height: 2px; background: #FFFFFF; transition: var(--transition); }
    
    
    .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); opacity: 0; visibility: hidden; z-index: 998; transition: var(--transition); }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--bg-dark); z-index: 999; padding: 30px 20px; display: flex; flex-direction: column; gap: 40px; transition: var(--transition); border-right: 1px solid var(--glass-border); }
    .drawer.active { left: 0; }
    .drawer-overlay.active { opacity: 1; visibility: visible; }
    .drawer-header { display: flex; justify-content: space-between; align-items: center; }
    .drawer-close { background: none; border: none; font-size: 28px; color: #FFFFFF; cursor: pointer; }
    .drawer-nav { display: flex; flex-direction: column; gap: 20px; }
    .drawer-nav a { font-size: 16px; color: var(--text-muted); padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .drawer-nav a:hover { color: #FFFFFF; padding-left: 5px; }

    
    .page-header { background: radial-gradient(circle at center, #1E3E62 0%, var(--bg-deep) 100%); padding: 140px 0 50px; text-align: center; border-bottom: 1px solid var(--border-color); }
    .breadcrumbs { font-size: 14px; color: var(--text-muted); margin-bottom: 15px; }
    .breadcrumbs a:hover { color: #FFFFFF; }
    .article-title { font-size: clamp(24px, 4vw, 36px); font-weight: 800; color: #FFFFFF; margin-bottom: 20px; max-width: 900px; margin-inline: auto; line-height: 1.3; }
    .article-meta-header { display: flex; justify-content: center; align-items: center; gap: 24px; font-size: 13px; color: var(--text-muted); flex-wrap: wrap; }
    .article-meta-header span { display: inline-flex; align-items: center; gap: 6px; }

    
    .layout-wrapper { display: grid; grid-template-columns: 8fr 4fr; gap: 40px; padding: 60px 0; }
    
    
    .article-content-box { background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: 12px; padding: 40px; box-shadow: var(--shadow); }
    .rich-text { font-size: 16px; color: var(--accent-blue); line-height: 1.8; }
    .rich-text p { margin-bottom: 24px; text-align: justify; }
    .rich-text h2, .rich-text h3 { color: #FFFFFF; margin: 30px 0 15px; font-weight: 700; }
    .rich-text h2 { font-size: 22px; border-left: 4px solid var(--primary); padding-left: 12px; }
    .rich-text img { border-radius: 8px; margin: 20px 0; border: 1px solid var(--glass-border); display: block; max-width: 100%; margin-inline: auto; }
    
    
    .article-bottom-tags { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 20px; margin-top: 40px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
    .article-bottom-tags span { font-size: 13px; color: var(--text-muted); }
    .article-bottom-tags a { font-size: 12px; padding: 4px 10px; background: rgba(29,123,255,0.15); border: 1px solid var(--primary); border-radius: 4px; color: var(--primary); }

    
    .prev-next-links { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; }
    .pn-card { background: var(--bg-deep); border: 1px solid var(--border-color); border-radius: 8px; padding: 16px; transition: var(--transition); }
    .pn-card:hover { border-color: var(--primary); }
    .pn-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 6px; }
    .pn-title { font-size: 13px; font-weight: 700; color: #FFFFFF; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

    
    .related-section { margin-top: 60px; }
    .related-title { font-size: 18px; font-weight: 700; color: #FFFFFF; margin-bottom: 24px; border-left: 3px solid var(--primary); padding-left: 10px; }
    .related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .related-card { background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; transition: var(--transition); }
    .related-card:hover { border-color: var(--primary); transform: translateY(-2px); }
    .related-card h4 { font-size: 14px; font-weight: 700; color: #FFFFFF; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .related-card p { font-size: 12px; color: var(--text-muted); }

    
    .sidebar { display: flex; flex-direction: column; gap: 40px; }
    .sidebar-widget { background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: 12px; padding: 25px; }
    .widget-title { font-size: 16px; font-weight: 700; color: #FFFFFF; margin-bottom: 20px; border-left: 3px solid var(--primary); padding-left: 10px; }
    
    .hot-list { display: flex; flex-direction: column; gap: 15px; }
    .hot-item { display: flex; gap: 12px; align-items: flex-start; }
    .hot-item-num { font-weight: bold; font-size: 14px; width: 22px; height: 22px; background: rgba(29,123,255,0.15); color: var(--primary); border-radius: 4px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .hot-item-num.top-3 { background: var(--primary); color: #FFFFFF; }
    .hot-item-title { font-size: 13px; font-weight: 600; color: #FFFFFF; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .hot-item-title:hover { color: var(--primary); }

    
    .footer { background: #050C16; border-top: 1px solid var(--border-color); padding: 80px 0 30px; font-size: 14px; color: var(--text-muted); }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 50px; }
    .footer-brand { display: flex; flex-direction: column; gap: 20px; }
    .footer-brand p { font-size: 13px; line-height: 1.6; color: var(--text-muted); }
    .footer-links h4 { font-size: 15px; font-weight: 700; color: #FFFFFF; margin-bottom: 20px; }
    .footer-links ul { display: flex; flex-direction: column; gap: 12px; }
    .footer-links a:hover { color: #FFFFFF; }
    .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; }
    .footer-copyright { font-size: 12px; }
    .footer-meta-links { display: flex; gap: 20px; font-size: 12px; }

    @media (max-width: 992px) {
      .layout-wrapper { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .nav-desktop { display: none; }
      .nav-toggle { display: flex; }
      .prev-next-links { grid-template-columns: 1fr; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }