:root{font-family:Segoe UI,Arial,sans-serif;color:#22384a;background:#f3f6f8}
body{margin:0;line-height:1.6}
header{background:#142c3e;color:#fff;padding:28px 32px}header h1{margin:0 0 4px;font-size:26px}header p{margin:0;color:#a9bfce}
.toc{display:flex;flex-wrap:wrap;gap:6px 14px;padding:14px 32px;background:#fff;border-bottom:1px solid #dde5e9;position:sticky;top:0}
.toc a{color:#176e79;font-size:13px;font-weight:600;text-decoration:none}.toc a:hover{text-decoration:underline}
main{max-width:920px;margin:0 auto;padding:12px 24px 60px}
section{background:#fff;border:1px solid #dde5e9;border-radius:10px;padding:18px 24px;margin:18px 0}
h2{font-size:19px;margin:0 0 10px;color:#142c3e}
code{background:#eef3f6;border-radius:4px;padding:1px 5px;font-size:13px}
.tip{border-left:3px solid #ad843b;padding:6px 12px;background:#fbf7ef;font-size:14px}
table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:6px 10px;border-bottom:1px solid #e4eaee}th{color:#557386;font-size:12px;text-transform:uppercase}
dt{font-weight:700;margin-top:10px}dd{margin:2px 0 0 0}
@media print{.toc{position:static}section{break-inside:avoid}}
h3{font-size:15px;margin:14px 0 6px;color:#25394b}