:root{--c:#1a1f36;--muted:#5b6478;--brand:#0b6cff;--warn:#b42318;--bg:#f7f9fc;--line:#e4e8f0}
*{box-sizing:border-box}
body{margin:0;font:16px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--c);background:#fff}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:12px 20px}
.logo{font-weight:700;color:var(--c);text-decoration:none}
nav a{margin-left:14px;color:var(--muted);text-decoration:none;font-size:14px}
nav a:hover,nav a[aria-current]{color:var(--brand)}
.notice{background:#fff7e6;border-bottom:1px solid #ffe2a8;font-size:14px;padding:8px 20px;text-align:center}
main{padding:28px 0 48px}
h1{font-size:30px;line-height:1.35;margin:.2em 0 .5em}
h2{font-size:23px;margin:2em 0 .6em;padding-top:.6em;border-top:1px solid var(--line)}
h3{font-size:18px;margin:1.5em 0 .4em}
a{color:var(--brand)}
.lead{font-size:17px;background:var(--bg);border-left:4px solid var(--brand);padding:14px 18px;border-radius:6px}
.meta{color:var(--muted);font-size:14px}
.alert{border:1px solid #fecdca;background:#fef3f2;color:var(--warn);padding:12px 16px;border-radius:8px}
.ok{border:1px solid #abefc6;background:#ecfdf3;padding:12px 16px;border-radius:8px}
table{width:100%;border-collapse:collapse;margin:1em 0;font-size:15px}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--bg)}
pre{position:relative;background:#0f172a;color:#e2e8f0;padding:14px;border-radius:8px;overflow:auto;font-size:14px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.copy{position:absolute;top:8px;right:8px;font-size:12px;background:#334155;color:#fff;border:0;border-radius:4px;padding:3px 8px;cursor:pointer}
.toc{background:var(--bg);padding:12px 20px;border-radius:8px}
.toc ol{margin:0;padding-left:20px}
details{border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:10px 0}
summary{font-weight:600;cursor:pointer}
ul.check{list-style:none;padding-left:0}
ul.check li::before{content:"☐ ";color:var(--brand)}
footer{border-top:1px solid var(--line);background:var(--bg);color:var(--muted);font-size:13px;padding:24px 0}
@media(max-width:600px){h1{font-size:24px}nav a{margin:0 10px 0 0}}