.article-container{line-height:1.8;color:#333;max-width:800px;margin:0 auto;padding:20px}h1{font-size:28px;margin-bottom:20px;color:#2c3e50;border-bottom:4px solid #3498db;padding-bottom:15px}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}h4{font-size:18px;margin-top:20px;margin-bottom:10px;color:#2196f3}.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-shadow:0 2px 5px rgba(0,0,0,.05)}.box-point strong{color:#f57c00;font-size:16px}.box-alert{background:#fff5f5;border-left:5px solid #ef5350;padding:20px;margin:30px 0;border-radius:5px;box-shadow:0 2px 5px rgba(0,0,0,.05)}.box-alert strong{color:#c62828;font-size:16px}.box-tips{background:#f0f7ff;border-left:5px solid #2196f3;padding:20px;margin:30px 0;border-radius:5px;box-shadow:0 2px 5px rgba(0,0,0,.05)}.box-tips strong{color:#1565c0;font-size:16px}.box-check{background:#f1f8e9;border-left:5px solid #8bc34a;padding:20px;margin:30px 0;border-radius:5px;box-shadow:0 2px 5px rgba(0,0,0,.05)}.box-check strong{color:#558b2f;font-size:16px}.emphasis{font-weight:700;color:#e74c3c}.internal-link{display:inline;color:#2196f3;font-weight:700;text-decoration:none;border-bottom:1px dotted #2196f3}.internal-link:hover{color:#1565c0;border-bottom:1px solid #1565c0}.point-card{background:#fff;border:2px solid #e0e0e0;border-radius:8px;padding:20px;margin:25px 0;box-shadow:0 2px 8px rgba(0,0,0,.08)}.point-card h4{color:#2196f3;margin-top:0;font-size:18px;border-bottom:2px dotted #2196f3;padding-bottom:10px}.checklist{list-style:none;padding-left:0}.checklist li{padding:10px 0 10px 35px;position:relative;border-bottom:1px dashed #e0e0e0}.checklist li:before{content:"☑";position:absolute;left:0;top:10px;color:#4caf50;font-size:20px}.ng-list{list-style:none;padding-left:0}.ng-list li{padding:10px 0 10px 35px;position:relative;border-bottom:1px dashed #e0e0e0}.ng-list li:before{content:"✗";position:absolute;left:0;top:10px;color:#f44336;font-size:20px;font-weight:700}figure{margin:40px 0;text-align:center}figure img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,.1)}figcaption{margin-top:12px;font-size:14px;color:#666;font-style:italic}table{width:100%;border-collapse:collapse;margin:20px 0}th{background:#e3f2fd;border:1px solid #ddd;padding:12px;text-align:left}td{border:1px solid #ddd;padding:12px}.comparison-table{margin:30px 0}.comparison-table th{background:#e8f5e9;color:#2e7d32}.comparison-table .bad{background:#ffebee}