:root {
            --primary: rgb(0, 122, 255);
            --primary-hover: rgba(0, 122, 255, 0.8);
            --primary-light: rgba(0, 122, 255, 0.1);
            --text-main: #1d1d1f;
            --text-muted: #86868b;
            --bg-body: #ffffff;
            --bg-gray: #f5f5f7;
            --border-color: #e5e5ea;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --radius-md: 12px;
            --radius-lg: 20px;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--text-main); background: var(--bg-body); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }
        ul, li { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 36px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-main); white-space: nowrap; letter-spacing: -0.5px; }
        
        
        .desktop-nav { display: flex; gap: 30px; align-items: center; }
        .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-main); }
        .desktop-nav a:hover { color: var(--primary); }
        .btn-primary { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; background: var(--primary); color: #fff; font-weight: 600; border-radius: 8px; transition: background 0.3s; }
        .btn-primary:hover { background: var(--primary-hover); color: #fff; }
        
        
        .mobile-toggle { display: none; cursor: pointer; padding: 10px; }
        .mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--text-main); margin: 5px 0; transition: 0.3s; }
        
        
        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; z-index: 998; transition: 0.3s; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: #fff; z-index: 999; transition: 0.3s; display: flex; flex-direction: column; box-shadow: var(--shadow-md); }
        .drawer.active { left: 0; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { font-size: 24px; cursor: pointer; color: var(--text-muted); }
        .drawer-body { padding: 20px; overflow-y: auto; flex: 1; }
        .drawer-body a { display: block; padding: 12px 0; font-size: 16px; font-weight: 500; border-bottom: 1px solid var(--border-color); }
        
        
        .hero { padding: 80px 0; background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%); overflow: hidden; }
        .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .hero-content h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 24px; letter-spacing: -1px; }
        .hero-content h1 span { color: var(--primary); }
        .hero-content p { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; max-width: 480px; }
        .hero-actions { display: flex; gap: 16px; }
        .btn-outline { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border: 1px solid var(--border-color); background: transparent; color: var(--text-main); font-weight: 600; border-radius: 8px; }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); }
        .hero-image { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
        .hero-image img { width: 100%; height: 100%; object-fit: cover; }
        
        
        .features { padding: 80px 0; background: var(--bg-body); }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 { font-size: 32px; font-weight: 700; margin-bottom: 16px; }
        .section-header p { font-size: 16px; color: var(--text-muted); }
        .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-card { padding: 32px 24px; background: var(--bg-gray); border-radius: var(--radius-md); transition: transform 0.3s; }
        .feature-card:hover { transform: translateY(-5px); background: #fff; box-shadow: var(--shadow-md); }
        .feature-icon { width: 56px; height: 56px; background: var(--primary-light); color: var(--primary); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; font-weight: bold; }
        .feature-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
        .feature-card p { font-size: 14px; color: var(--text-muted); }
        
        
        .data-board { padding: 60px 0; background: #000; color: #fff; }
        .data-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
        .data-item h4 { font-size: 16px; color: #a1a1aa; margin-bottom: 10px; }
        .data-item .num { font-size: 40px; font-weight: 800; color: var(--primary); }
        
        
        .news-section { padding: 80px 0; background: var(--bg-gray); }
        .news-layout { display: grid; grid-template-columns: 350px 1fr; gap: 40px; }
        .hot-news { background: #fff; padding: 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
        .hot-news h3 { font-size: 20px; border-bottom: 2px solid var(--primary); display: inline-block; padding-bottom: 8px; margin-bottom: 20px; }
        .hot-list li { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border-color); }
        .hot-list li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
        .hot-list a { font-size: 15px; font-weight: 500; display: block; margin-bottom: 6px; }
        .hot-list a:hover { color: var(--primary); }
        .meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }
        
        .latest-news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .post-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: 0.3s; display: flex; flex-direction: column; }
        .post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .post-card .thumb { width: 100%; height: 180px; overflow: hidden; }
        .post-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: 0.3s; }
        .post-card:hover .thumb img { transform: scale(1.05); }
        .post-card .info { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .post-card .tag { font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 4px 8px; border-radius: 4px; display: inline-block; margin-bottom: 10px; width: fit-content; }
        .post-card h4 { font-size: 18px; font-weight: 600; margin-bottom: 10px; line-height: 1.4; }
        .post-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; flex: 1; }
        .post-card .read-more { font-size: 14px; font-weight: 600; color: var(--primary); margin-top: auto; display: inline-flex; align-items: center; }
        
        
        .cta { padding: 80px 0; text-align: center; background: linear-gradient(135deg, var(--primary) 0%, #0056b3 100%); color: #fff; }
        .cta h2 { font-size: 36px; font-weight: 700; margin-bottom: 20px; }
        .cta p { font-size: 18px; opacity: 0.9; margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta .btn-light { display: inline-flex; background: #fff; color: var(--primary); padding: 14px 32px; font-size: 16px; font-weight: 600; border-radius: 8px; }
        .cta .btn-light:hover { background: var(--bg-gray); }
        
        
        .footer { background: #111; color: #fff; padding: 60px 0 30px; }
        .footer-widgets { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer .logo span { color: #fff; }
        .footer-desc { color: #a1a1aa; font-size: 14px; margin-top: 16px; max-width: 300px; }
        .widget-title { font-size: 16px; font-weight: 600; margin-bottom: 20px; color: #fff; }
        .widget-links li { margin-bottom: 12px; }
        .widget-links a { color: #a1a1aa; font-size: 14px; }
        .widget-links a:hover { color: var(--primary); }
        .footer-bottom { border-top: 1px solid #333; padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: #a1a1aa; }
        
        
        @media (max-width: 992px) {
            .hero-grid { grid-template-columns: 1fr; text-align: center; }
            .hero-content p { margin: 0 auto 30px; }
            .hero-actions { justify-content: center; }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .news-layout { grid-template-columns: 1fr; }
            .footer-widgets { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-toggle { display: block; }
            .feature-grid { grid-template-columns: 1fr; }
            .latest-news-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-widgets { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }