body{font:17px/1.8 "Microsoft YaHei",system-ui,sans-serif;color:#172b46;background:#f8fafc;margin:0}
main{max-width:1060px;margin:36px auto;padding:30px 36px;background:white;border:1px solid #e2e8f0}
h1{font-size:28px;line-height:1.4}h2{font-size:23px;margin-top:32px}h3{font-size:19px}a{color:#0369a1}
table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}td,th{border:1px solid #dbe4ee;padding:10px;min-width:110px}
th{background:#eff6ff}img{max-width:100%;height:auto}pre{overflow:auto;background:#f1f5f9;padding:14px}
blockquote{margin-left:0;border-left:4px solid #94a3b8;padding-left:18px;color:#475569}nav{font-size:14px;margin-bottom:22px}
@media(max-width:640px){main{margin:0;padding:22px 18px;border:0}body{font-size:16px}h1{font-size:24px}}
@media print{main{border:0;margin:0;padding:0}nav{display:none}a{color:inherit}}