:root { --primary: #1e272e; --accent: #d35400; --text: #333; }
        body { font-family: 'Inter', sans-serif; line-height: 1.8; color: var(--text); margin: 0; }
        
        /* 头部视觉 */
        .hero { background: var(--primary); color: white; padding: 100px 10%; text-align: center; }
        .hero h1 { font-size: 3.5rem; margin-bottom: 20px; }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 60px 5%; }
        h2 { border-left: 5px solid var(--accent); padding-left: 15px; color: var(--primary); margin-top: 50px; }
        
        /* 详细材料板块 */
        .material-section { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-top: 30px; }
        .material-card { background: #f9f9f9; padding: 30px; border: 1px solid #eee; border-radius: 8px; }
        .material-card h3 { color: var(--accent); margin-top: 0; border-bottom: 1px solid #ddd; padding-bottom: 10px; }
        
        .matrix-table { width: 100%; border-collapse: collapse; margin-top: 40px; background: white; }
        .matrix-table th { background: var(--primary); color: white; padding: 15px; text-align: left; }
        .matrix-table td { padding: 15px; border-bottom: 1px solid #eee; }
        
        .expert-note { background: #fff8f0; padding: 30px; border-radius: 8px; margin-top: 30px; border: 1px solid #ffe0b2; }