:root{--bg:#0e1116;--bg2:#0b0e13;--card:#171c24;--line:#232b36;--txt:#e6edf3;--dim:#8b98a9;--accent:#22d3a6;--amber:#f5c542}
*{box-sizing:border-box;margin:0}
body{font:15px/1.7 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--txt);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}
code{background:var(--bg2);border:1px solid var(--line);border-radius:5px;padding:1px 6px}
pre{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow-x:auto;line-height:1.55;margin:14px 0}
pre code{background:none;border:none;padding:0}
nav.top{position:sticky;top:0;z-index:10;background:rgba(14,17,22,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav.top .w{max-width:1180px;margin:0 auto;padding:0 20px;display:flex;align-items:center;height:54px;gap:18px}
.brand{font-weight:800;color:var(--txt)}.brand span{color:var(--accent)}
nav.top .r{margin-left:auto;display:flex;gap:15px;font-size:13.5px;font-weight:600}
nav.top .r a{color:var(--dim)}nav.top .r a:hover{color:var(--txt);text-decoration:none}
.layout{max-width:1180px;margin:0 auto;padding:28px 20px;display:grid;grid-template-columns:230px 1fr;gap:36px}
@media(max-width:860px){.layout{grid-template-columns:1fr}.side{position:static;order:2;border-top:1px solid var(--line);padding-top:18px}}
.side{position:sticky;top:78px;align-self:start;font-size:14px}
.side .h{font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin:0 0 8px}
.side a{display:block;color:var(--dim);padding:4px 10px;border-left:2px solid transparent;border-radius:0 6px 6px 0}
.side a:hover{color:var(--txt);text-decoration:none}
.side a.on{color:var(--accent);border-left-color:var(--accent);background:rgba(34,211,166,.06)}
main{min-width:0}
main h1{font-size:30px;font-weight:800;line-height:1.15;margin-bottom:4px}
.sub{color:var(--dim);margin-bottom:26px;font-size:16px}
main h2{font-size:21px;font-weight:800;margin:34px 0 10px;padding-top:8px}
main h3{font-size:16.5px;font-weight:700;margin:22px 0 8px}
main p,main li{color:#c6d0de}
main ul,main ol{padding-left:22px;margin:8px 0}
main li{margin:4px 0}
table{border-collapse:collapse;width:100%;margin:14px 0;font-size:14px;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:8px 12px;text-align:left;vertical-align:top}
th{background:var(--card);font-weight:700}
td code{white-space:nowrap}
.tip{background:rgba(34,211,166,.07);border:1px solid rgba(34,211,166,.3);border-radius:10px;padding:12px 16px;margin:14px 0}
.warn{background:rgba(245,197,66,.06);border:1px solid rgba(245,197,66,.35);border-radius:10px;padding:12px 16px;margin:14px 0}
.tip b,.warn b{display:block;margin-bottom:2px}
.next{margin-top:44px;padding-top:18px;border-top:1px solid var(--line);display:flex;gap:14px;flex-wrap:wrap;font-weight:600;font-size:14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:16px 0}
@media(max-width:760px){.grid2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.card b{font-size:15px}.card p{font-size:13.5px;color:var(--dim);margin-top:3px}