:root{
  --paper:#F7F5F0;
  --ink:#23211C;
  --muted:#6B665C;
  --line:#E2DDD2;
  --accent:#1F6F5C;
  --accent-2:#2E6FB0;
  --warn:#B0432B;
  --warn-bg:#FBF7EC;
  --warn-line:#EADFC2;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);color:var(--ink);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:780px;margin:0 auto;padding:28px 20px 72px}
header.top{border-bottom:2px solid var(--ink);padding-bottom:16px;margin-bottom:6px}
.brand{font-size:13px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase}
h1{font-size:26px;font-weight:700;margin:8px 0 6px;letter-spacing:.01em}
.meta{font-size:13px;color:var(--muted)}
nav.toc{margin:20px 0;padding:14px 18px;background:#fff;border:1px solid var(--line)}
nav.toc .toc-title{font-size:13px;color:var(--muted);letter-spacing:.1em;margin-bottom:6px}
nav.toc a{color:var(--accent-2);text-decoration:none;display:block;padding:3px 0}
nav.toc a:hover{text-decoration:underline}
h2{font-size:19px;font-weight:700;margin:36px 0 10px;padding-left:10px;border-left:4px solid var(--accent)}
h3{font-size:16px;font-weight:700;margin:22px 0 8px}
p{margin:10px 0}
li{margin:4px 0}
a.inlink{color:var(--accent-2)}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px;background:#fff}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:#EFEBE2;font-weight:700}
.sensitive{color:var(--warn);font-weight:700}
.note{background:var(--warn-bg);border:1px solid var(--warn-line);padding:12px 15px;font-size:14px;color:#7A6A3A;margin:16px 0}
.foot{margin-top:44px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.6}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:11px 20px;text-decoration:none;border-radius:0;font-weight:700}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.card{border:1px solid var(--line);background:#fff;padding:22px}
.card h3{margin-top:0}
.card p{font-size:14px;color:var(--muted);margin:8px 0 16px}
@media(max-width:560px){.cards{grid-template-columns:1fr}}