main{max-width:900px;margin:0 auto;padding:40px 20px}.hero-section{text-align:center;padding:60px 20px}.hero-section h1{margin:0;font-size:32px}.hero-subtitle{font-size:18px;color:#666;margin-bottom:30px}.hero-description{font-size:16px;color:#888;max-width:500px;margin:0 auto}footer{border-top:1px solid #ddd;padding:40px 20px;text-align:center;margin-top:60px;margin-left:-20px;margin-right:-20px}footer nav{margin-bottom:20px}footer nav a{margin:0 15px;text-decoration:none;color:#06c}footer nav a:hover{text-decoration:underline}footer p{color:#888;font-size:14px;margin:0}section{margin:30px 0}section h2{margin-top:30px;margin-bottom:15px;font-size:24px}section h3{margin-top:20px;margin-bottom:10px;font-size:18px}section ol,section ul{margin:10px 0;padding-left:20px}section li{margin:8px 0}section p{line-height:1.6;margin:10px 0}a{color:#06c}a:hover{color:#0052a3}.text-center{text-align:center}.margin-top-60{margin-top:60px}.color-gray-888{color:#888}.color-gray-666{color:#666}