.article-container{line-height:1.8;color:#333}h2{font-size:24px;margin-top:40px;margin-bottom:20px;color:#2c3e50;border-bottom:3px solid #3498db;padding-bottom:10px}h3{font-size:20px;margin-top:30px;margin-bottom:15px;color:#34495e;padding-left:10px;border-left:4px solid #3498db}.lead{font-size:18px;background:#e8f4f8;padding:20px;border-radius:5px;margin:30px 0;border-left:4px solid #3498db}.box-point{background:#fffbf0;border-left:5px solid #ffc107;padding:20px;margin:30px 0;border-radius:5px}.box-tips{background:#f0f7ff;border-left:5px solid #2196f3;padding:20px;margin:30px 0;border-radius:5px}.cta-box{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:30px;border-radius:10px;text-align:center;margin:40px 0}.cta-button{display:inline-block;background:#fff;color:#667eea;padding:15px 40px;border-radius:50px;font-weight:700;text-decoration:none;margin-top:15px}