body{max-width:780px;margin:0 auto;padding:28px 18px 64px;line-height:1.95;
font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#1c1c1e;background:#fff}
h1{font-size:22px;margin:8px 0 4px}
h2{font-size:16px;margin:26px 0 6px}
.muted{color:#8a8a8e;font-size:13px}
table{border-collapse:collapse;width:100%;margin:8px 0;font-size:14px}
th,td{border:1px solid #e3e3e6;padding:7px 9px;text-align:left}
code{background:#f5f5f7;padding:1px 5px;border-radius:4px}