:root{--bg:#ffffff;--panel:#f7f9fc;--ink:#1a2230;--muted:#64748b;--accent:#3257d6;--line:#e6ebf2}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
.nav{border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}
.nav .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{font-weight:700;font-size:1.1rem;color:var(--ink)}
#search{margin-left:auto;font:inherit;font-size:.9rem;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--panel);color:var(--ink);width:260px;max-width:50vw}
.layout{max-width:1100px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:240px 1fr;gap:36px;align-items:start}
.side{position:sticky;top:76px;padding:24px 0}
.side nav{display:flex;flex-direction:column;gap:2px}
.side .grp{color:var(--muted);text-transform:uppercase;font-size:.72rem;letter-spacing:.08em;margin:16px 0 6px}
.side a{padding:7px 12px;border-radius:7px;color:var(--ink);font-size:.92rem;cursor:pointer}
.side a:hover{background:var(--panel)}
.side a.active{background:#eaf0ff;color:var(--accent);font-weight:600}
.noresult{color:var(--muted);padding:12px}
.content{padding:30px 0 60px;min-height:60vh}
.content h1{margin:0 0 6px;font-size:1.9rem;letter-spacing:-.02em}
.content .crumb{color:var(--muted);font-size:.82rem;margin-bottom:18px}
.content p{color:#33405a}
.content pre{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:14px 16px;overflow:auto;font-size:.88rem}
.content code{font-family:ui-monospace,Menlo,Consolas,monospace}
.content ul{color:#33405a}
footer{border-top:1px solid var(--line);padding:24px 20px;text-align:center;color:var(--muted);font-size:.85rem}
@media(max-width:820px){.layout{grid-template-columns:1fr}.side{position:static;padding:14px 0;border-bottom:1px solid var(--line)}#search{width:160px}}