:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#17212b;background:#f7f8fa;line-height:1.8}
*{box-sizing:border-box}body{margin:0}main{max-width:820px;margin:48px auto;padding:40px 48px;background:#fff;border:1px solid #e7e8ee;border-radius:18px}
h1{margin:0 0 8px;font-size:30px;line-height:1.35}h2{margin:34px 0 8px;font-size:19px}p,li{font-size:15px}ul{padding-left:1.4em}
.meta{color:#697384;font-size:14px}.notice{background:#eafbf6;border-left:4px solid #14b8a6;padding:12px 16px;border-radius:4px}
a{color:#0d9488}footer{margin-top:40px;padding-top:18px;border-top:1px solid #e7e8ee;color:#697384;font-size:14px}
@media(max-width:640px){main{margin:0;padding:26px 20px;border:0;border-radius:0}h1{font-size:25px}}