/* 样式代码与上一轮相同，此处为节省篇幅略写，实际使用时保留完整样式 */
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; background-color: #f9fafc; color: #1e293b; line-height: 1.5; }
    :root {
        --primary-blue: #2D6AFF;
        --primary-blue-dark: #1e4bd2;
        --accent-green: #10B981;
        --accent-orange: #F97316;
        --accent-red: #EF4444;
        --bg-light: #F8FAFE;
        --card-white: #FFFFFF;
        --text-dark: #0F172A;
        --text-muted: #475569;
        --border-light: #E9EEF3;
        --shadow-sm: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
        --shadow-md: 0 20px 30px -12px rgba(0, 0, 0, 0.08);
    }
    .container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
    .navbar { background: rgba(255,255,255,0.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 50; padding: 16px 0; }
    .nav-flex { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
    .logo { font-size: 1.8rem; font-weight: 800; background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-green) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; text-decoration: none; }
    .nav-links { display: flex; gap: 32px; font-weight: 500; }
    .nav-links a { text-decoration: none; color: var(--text-dark); transition: color 0.2s; }
    .nav-links a:hover { color: var(--primary-blue); }
    .btn-primary { background: var(--primary-blue); color: white; padding: 10px 24px; border-radius: 40px; font-weight: 600; text-decoration: none; display: inline-block; transition: all 0.2s; }
    .btn-primary:hover { background: var(--primary-blue-dark); transform: translateY(-1px); }
    .article-header { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 100%); padding: 48px 0 32px; border-bottom: 1px solid var(--border-light); }
    .back-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-blue); text-decoration: none; font-weight: 500; margin-bottom: 24px; transition: gap 0.2s; }
    .back-link:hover { gap: 12px; color: var(--primary-blue-dark); }
    .article-category { display: inline-block; background: #FEE2E2; color: var(--accent-red); padding: 4px 12px; border-radius: 100px; font-size: 0.8rem; font-weight: 600; margin-bottom: 16px; }
    .article-title { font-size: 2.5rem; font-weight: 800; line-height: 1.2; color: var(--text-dark); margin-bottom: 20px; max-width: 900px; }
    .article-meta { display: flex; flex-wrap: wrap; gap: 24px; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 24px; }
    .article-meta span { display: inline-flex; align-items: center; gap: 8px; }
    .article-content { padding: 60px 0; }
    .article-body { max-width: 800px; margin: 0 auto; background: var(--card-white); border-radius: 32px; padding: 48px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
    .article-body p { margin-bottom: 20px; color: var(--text-muted); line-height: 1.7; font-size: 1.05rem; }
    .article-body h2 { font-size: 1.6rem; margin: 32px 0 16px; color: var(--text-dark); }
    .article-body h3 { font-size: 1.3rem; margin: 24px 0 12px; color: var(--text-dark); }
    .article-body ul, .article-body ol { margin: 16px 0 20px 24px; color: var(--text-muted); }
    .article-body li { margin: 8px 0; }
    .article-body .highlight-box { background: #FEF3C7; border-left: 4px solid var(--accent-orange); padding: 20px 24px; border-radius: 16px; margin: 24px 0; }
    .article-body .warning-box { background: #FEE2E2; border-left: 4px solid var(--accent-red); padding: 20px 24px; border-radius: 16px; margin: 24px 0; }
    .article-body .stats-card { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; background: var(--bg-light); padding: 24px; border-radius: 24px; margin: 24px 0; text-align: center; }
    .article-body .stat-item h4 { font-size: 1.8rem; color: var(--primary-blue); margin-bottom: 4px; }
    .article-body .timeline { margin: 24px 0; padding-left: 24px; border-left: 3px solid var(--primary-blue); }
    .article-body .timeline-item { margin-bottom: 20px; }
    .article-body .timeline-date { font-weight: 700; color: var(--primary-blue); margin-bottom: 4px; }
    .article-body .product-card { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 100%); border-radius: 24px; padding: 24px; margin: 32px 0; text-align: center; border: 1px solid var(--border-light); }
    .article-body .content-image { margin: 24px 0; text-align: center; }
    .article-body .content-image img { max-width: 100%; border-radius: 16px; border: 1px solid var(--border-light); }
    .article-body .image-caption { font-size: 0.8rem; color: var(--text-muted); margin-top: 8px; }
    .related-section { background: var(--bg-light); padding: 60px 0; }
    .related-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 32px; text-align: center; }
    .related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
    .related-card { background: var(--card-white); border-radius: 24px; padding: 24px; text-decoration: none; color: inherit; border: 1px solid var(--border-light); transition: transform 0.2s, box-shadow 0.2s; display: block; }
    .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .related-card .date { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; }
    .related-card h4 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-dark); }
    .related-card p { font-size: 0.9rem; color: var(--text-muted); }
    .footer { background: #0F172A; color: #94A3B8; padding: 48px 0 24px; text-align: center; }
    @media (max-width: 768px) { .article-title { font-size: 1.8rem; } .article-body { padding: 28px; } .nav-links { display: none; } }