.qna h1{color:#2c3e50;border-bottom:2px solid #3498db;padding-bottom:10px;padding-left:20px}.qna h2{color:#34495e;margin-top:30px;margin-bottom:15px}.qna h3{color:#7f8c8d;margin-top:25px;margin-bottom:10px}.qna ul{padding-left:20px}.qna li{margin-bottom:8px}.qna .metric{background-color:#ecf0f1;border-left:4px solid #3498db;margin:10px 0;padding:10px}.qna .highlight{background-color:#fff3cd;border-radius:3px;padding:2px 4px}.qna .section{margin-bottom:30px}