:root {
            --primary-color: rgb(0,0,0);
            --primary-hover: #333;
            --bg-light: #f5f5f7;
            --bg-white: #ffffff;
            --text-main: #1d1d1f;
            --text-muted: #86868b;
            --border-color: #e5e5ea;
            --accent-gold: #c5a977;
        }
        * { 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); line-height: 1.6; background: var(--bg-light); }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        header { background: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
        .nav-inner { display: flex; justify-content: space-between; align-items: center; 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(--primary-color); white-space: nowrap; }
        
        
        .desktop-nav { display: flex; gap: 30px; align-items: center; }
        .desktop-nav a { font-weight: 500; font-size: 15px; color: var(--text-main); transition: color 0.3s; }
        .desktop-nav a:hover { color: var(--accent-gold); }
        .header-actions { display: flex; gap: 15px; }
        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 6px; font-weight: 600; font-size: 14px; transition: all 0.3s; cursor: pointer; }
        .btn-primary { background: var(--primary-color); color: #fff; border: 1px solid var(--primary-color); }
        .btn-primary:hover { background: var(--primary-hover); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
        .btn-outline { background: transparent; color: var(--primary-color); border: 1px solid var(--primary-color); }
        .btn-outline:hover { background: var(--primary-color); color: #fff; }
        .mobile-menu-btn { display: none; font-size: 24px; cursor: pointer; background: none; border: none; color: var(--primary-color); }

        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 998; backdrop-filter: blur(4px); }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100vh; background: var(--bg-white); z-index: 999; transition: left 0.3s ease; display: flex; flex-direction: column; box-shadow: 2px 0 12px rgba(0,0,0,0.1); }
        .drawer.active { left: 0; }
        .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; background: none; border: none; cursor: pointer; color: var(--text-muted); }
        .drawer-nav { padding: 20px; overflow-y: auto; flex: 1; }
        .drawer-nav a { display: block; padding: 12px 0; font-size: 16px; font-weight: 500; border-bottom: 1px solid var(--bg-light); }
        
        
        .hero { background: var(--primary-color); color: #fff; padding: 80px 0; overflow: hidden; position: relative; }
        .hero::before { content: ''; position: absolute; top: 0; right: 0; width: 50%; height: 100%; background: linear-gradient(135deg, transparent, rgba(197, 169, 119, 0.2)); pointer-events: none; }
        .hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; z-index: 2; }
        .hero-content { flex: 1; max-width: 600px; }
        .hero-title { font-size: 42px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
        .hero-title span { color: var(--accent-gold); }
        .hero-desc { font-size: 18px; color: #a1a1a6; margin-bottom: 30px; line-height: 1.6; }
        .hero-visual { flex: 1; display: flex; justify-content: flex-end; }
        .hero-visual-box { width: 100%; max-width: 500px; height: 320px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 16px; position: relative; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; flex-direction: column; }
        .hero-visual-box::after { content: 'DATA ANALYTICS'; font-size: 24px; font-weight: 800; color: rgba(255,255,255,0.1); letter-spacing: 4px; }
        .hero-visual-box .chart-bar { width: 60%; height: 120px; border-bottom: 2px solid var(--accent-gold); position: relative; margin-top: 20px; display: flex; align-items: flex-end; justify-content: space-around; padding: 0 20px; }
        .chart-bar i { display: block; width: 20px; background: var(--accent-gold); opacity: 0.8; border-radius: 4px 4px 0 0; }
        
        
        .stats-bar { background: var(--bg-white); padding: 30px 0; border-bottom: 1px solid var(--border-color); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .stat-item h3 { font-size: 32px; font-weight: 800; color: var(--primary-color); margin-bottom: 5px; }
        .stat-item p { font-size: 14px; color: var(--text-muted); font-weight: 500; }

        
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-title { font-size: 32px; font-weight: 800; margin-bottom: 15px; color: var(--primary-color); }
        .section-subtitle { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
        
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card { background: var(--bg-white); padding: 40px 30px; border-radius: 12px; transition: transform 0.3s; border: 1px solid var(--border-color); }
        .feature-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.05); border-color: var(--primary-color); }
        .feature-icon { width: 50px; height: 50px; background: var(--bg-light); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 20px; font-weight: bold; color: var(--primary-color); border: 1px solid #ddd; }
        .feature-card h3 { font-size: 20px; margin-bottom: 15px; font-weight: 700; }
        .feature-card p { color: var(--text-muted); font-size: 14px; line-height: 1.6; }

        
        .articles-container { background: var(--bg-white); padding: 80px 0; }
        .article-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 40px; }
        .article-card { background: var(--bg-light); border-radius: 8px; overflow: hidden; transition: all 0.3s; display: flex; flex-direction: column; border: 1px solid transparent; }
        .article-card:hover { border-color: var(--border-color); box-shadow: 0 8px 20px rgba(0,0,0,0.06); transform: translateY(-3px); }
        .article-img { width: 100%; height: 160px; background: #eaeaea; object-fit: cover; }
        .article-content { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .article-tags { margin-bottom: 10px; }
        .article-tags span { display: inline-block; font-size: 12px; background: rgba(0,0,0,0.05); color: var(--primary-color); padding: 2px 8px; border-radius: 4px; margin-right: 5px; }
        .article-title { font-size: 16px; font-weight: 700; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
        .article-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
        .article-meta { display: flex; justify-content: space-between; font-size: 12px; color: #999; border-top: 1px solid #ddd; padding-top: 12px; }
        
        .hot-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 50px; }
        .hot-item { display: flex; gap: 20px; background: var(--bg-light); padding: 20px; border-radius: 8px; border-left: 4px solid var(--accent-gold); }
        .hot-item .hot-info { flex: 1; }
        .hot-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
        .hot-item p { font-size: 13px; color: var(--text-muted); }

        
        .trust-section { background: var(--primary-color); color: #fff; padding: 80px 0; text-align: center; }
        .trust-inner { max-width: 800px; margin: 0 auto; }
        .trust-inner h2 { font-size: 32px; font-weight: 800; margin-bottom: 20px; }
        .trust-inner p { font-size: 16px; color: #a1a1a6; margin-bottom: 40px; }

        
        footer { background: #111; color: #888; padding: 60px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo span { color: #fff; }
        .footer-brand p { margin-top: 20px; font-size: 14px; line-height: 1.6; }
        .footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
        .footer-col ul li { margin-bottom: 12px; }
        .footer-col ul li a { font-size: 14px; transition: color 0.3s; }
        .footer-col ul li a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid #333; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
        
        @media (max-width: 992px) {
            .desktop-nav, .header-actions { display: none; }
            .mobile-menu-btn { display: block; }
            .hero-inner { flex-direction: column; text-align: center; }
            .hero-content { max-width: 100%; }
            .hero-visual { width: 100%; justify-content: center; }
            .features-grid, .article-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hot-list { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .features-grid, .article-grid, .stats-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
        }