:root{--bg:#fff;--panel:#f6f8fa;--ink:#1f2328;--muted:#656d76;--line:#d8dee4;--accent:#1f5fb4;--accent-ink:#163f78;--code-bg:#f3f5f8;--sidebar:300px;--radius:8px;
font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:15.5px;line-height:1.55;color:var(--ink);}
*{box-sizing:border-box}
[id]{scroll-margin-top:72px}
html,body{margin:0;height:100%;background:var(--bg)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-size:.92em}
.app{display:grid;grid-template-columns:var(--sidebar) 1fr;grid-template-rows:56px 1fr;height:100%;min-height:100vh}
header.bar{grid-column:1/-1;display:flex;align-items:center;gap:14px;padding:0 18px;border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:5}
header.bar .brand a{color:inherit}header.bar .brand a:hover{text-decoration:none;color:var(--accent)}header.bar .brand{font-weight:650;font-size:17px;letter-spacing:.1px}
header.bar .brand small{color:var(--muted);font-weight:400;margin-left:8px}
header.bar .spacer{flex:1}
header.bar a.site{color:var(--muted);font-size:14px}
#menu{display:none;background:none;border:1px solid var(--line);border-radius:6px;width:36px;height:34px;cursor:pointer}
#menu span{display:block;width:16px;height:2px;background:var(--ink);margin:3px auto}
aside{border-right:1px solid var(--line);background:var(--panel);overflow:auto;position:sticky;top:56px;height:calc(100vh - 56px);display:flex;flex-direction:column}
.search{padding:12px 12px 8px;position:sticky;top:0;background:var(--panel);z-index:1}
.search input{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:6px;font:inherit;font-size:14px;background:#fff}
.search input:focus{outline:2px solid var(--accent);outline-offset:-1px}
nav.toc{padding:0 6px 24px;font-size:14px}
nav.toc ul{list-style:none;margin:0;padding:0}
nav.toc ul ul{display:none;margin-left:14px;border-left:1px solid var(--line)}
nav.toc li.open>ul{display:block}
nav.toc .row{display:flex;align-items:flex-start;border-radius:6px}
nav.toc .row:hover{background:#e9edf2}
nav.toc .row a{flex:1;display:block;padding:5px 8px 5px 8px;color:var(--ink);line-height:1.35;word-break:break-word}
nav.toc .row a:hover{text-decoration:none}
nav.toc li.active>.row{background:#dfe8f6}nav.toc li.active>.row>a{color:var(--accent-ink);font-weight:600}
nav.toc .tw{flex:none;width:22px;height:28px;border:0;background:none;cursor:pointer;position:relative}
nav.toc .tw::before{content:"";position:absolute;left:8px;top:11px;border:4px solid transparent;border-left:5px solid var(--muted);transition:transform .15s}
nav.toc li.open>.row>.tw::before{transform:rotate(90deg) translate(2px,2px)}
nav.toc li.branch>.row>a{font-weight:500}
nav.toc .lvl0>li{margin:1px 0}
nav.toc li.hide{display:none}
nav.toc.filtering ul ul{display:block}
.toc-empty{padding:12px;color:var(--muted);display:none}
main{min-width:0;padding:28px 44px 60px;max-width:980px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:6px}.crumbs .sep{margin:0 6px}
h1{font-size:28px;margin:0 0 16px;font-weight:650;letter-spacing:-.2px}
h2.sub{font-size:20px;margin:36px 0 10px;padding-top:18px;border-top:1px solid var(--line)}
.body p{margin:0 0 .85em}
.body p>strong:first-child{color:var(--accent-ink)}
pre.proto{background:var(--code-bg);border-left:3px solid var(--accent);padding:10px 14px;border-radius:0 var(--radius) var(--radius) 0;margin:.4em 0 1em;overflow:auto;white-space:pre-wrap}
pre.proto code{font-size:.95em;font-weight:600}
pre.code{background:var(--code-bg);border:1px solid var(--line);padding:12px 14px;border-radius:var(--radius);margin:.6em 0 1em;overflow:auto;line-height:1.45}
table.params,table.grid{border-collapse:collapse;width:100%;margin:.4em 0 1.1em;font-size:14.5px}
table.params td,table.grid td,table.grid th{padding:6px 10px;vertical-align:top;border-top:1px solid var(--line)}
table.params tr:first-child td{border-top:0}
table.params td:first-child{width:34%;white-space:nowrap;color:var(--accent-ink)}
table.params td:first-child code{white-space:normal}
table.params tr.ind1 td:first-child{padding-left:30px}table.params tr.ind2 td:first-child{padding-left:50px}table.params tr.ind3 td:first-child{padding-left:70px}
table.params tr.ind1 td:first-child code,table.params tr.ind2 td:first-child code{font-weight:600;color:var(--ink)}
table.params td p:last-child,table.grid td p:last-child{margin-bottom:0}
table.grid th{text-align:left;background:var(--panel);border-bottom:2px solid var(--line)}
.body table.params + pre.proto,.body table.params + p{margin-top:.6em}
div.ind1,div.ind2,div.ind3{margin-left:30px}div.ind2{margin-left:50px}div.ind3{margin-left:70px}
.body hr{border:0;border-top:1px solid var(--line);margin:28px 0}
nav.see-also,nav.chapter-list{margin:28px 0 8px;padding:14px 18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
nav.see-also h2,nav.chapter-list h2{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 8px;font-weight:600}
nav.see-also ul,nav.chapter-list ul{margin:0;padding:0;list-style:none;columns:2;column-gap:28px}
nav.see-also li,nav.chapter-list li{padding:3px 0;break-inside:avoid}
nav.chapter-list ul{columns:1}nav.chapter-list li{padding:5px 0;border-bottom:1px solid var(--line)}nav.chapter-list li:last-child{border:0}
footer.topic-nav{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:18px;border-top:1px solid var(--line)}
footer.topic-nav a{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);font-weight:500;max-width:48%}
footer.topic-nav a small{display:block;color:var(--muted);font-weight:400;font-size:12px;text-transform:uppercase;letter-spacing:.06em}
footer.topic-nav a.next{text-align:right;margin-left:auto}footer.topic-nav a:hover{text-decoration:none;border-color:var(--accent);background:var(--panel)}
.license pre{white-space:pre-wrap}
@media (max-width:900px){
 .app{grid-template-columns:1fr}
 #menu{display:block}
 header.bar .brand small,header.bar a.site{display:none}
 header.bar .brand a{color:inherit}header.bar .brand a:hover{text-decoration:none;color:var(--accent)}header.bar .brand{white-space:nowrap}
 aside{position:fixed;left:0;top:56px;width:min(85vw,340px);transform:translateX(-100%);transition:transform .2s;z-index:6;box-shadow:0 0 0 100vw rgba(0,0,0,0);}
 body.nav-open aside{transform:none;box-shadow:0 0 0 100vw rgba(0,0,0,.3)}
 main{padding:20px 18px 48px}
 h1{font-size:24px}
 table.params td:first-child{width:auto;white-space:normal}
 nav.see-also ul{columns:1}
 footer.topic-nav{flex-direction:column}footer.topic-nav a{max-width:none}
}
@media print{aside,header.bar,footer.topic-nav{display:none}section.topic{display:block;page-break-before:always}.app{display:block}}

.search{position:relative}
.results{position:absolute;left:12px;right:12px;top:48px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(0,0,0,.12);max-height:60vh;overflow:auto;z-index:3}
.results a{display:block;padding:8px 12px;border-bottom:1px solid var(--line);color:var(--ink);font-size:14px}
.results a:last-child{border:0}.results a:hover,.results a.sel{background:var(--panel);text-decoration:none}
.results a small{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.results .none{padding:10px 12px;color:var(--muted);font-size:14px}
.sum{color:var(--muted)}
nav.chapter-list .sum{font-size:14px}
.toc-extra{padding:4px 8px 8px}.toc-extra a{display:block;padding:6px 8px;border-radius:6px;font-weight:600;color:var(--accent-ink);border:1px solid var(--line);background:#fff;text-align:center}
.toc-extra a:hover{text-decoration:none;background:#e9edf2}.toc-extra a.active{background:#dfe8f6}
.letters{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 24px}.letters a{display:inline-block;min-width:32px;text-align:center;padding:4px 6px;border:1px solid var(--line);border-radius:6px;font-weight:600}
.idx-group h2{font-size:20px;margin:28px 0 6px;color:var(--muted)}
table.idx{border-collapse:collapse;width:100%;font-size:14.5px;table-layout:fixed}table.idx td:first-child{width:30%}table.idx td.ch{width:22%}table.idx td{padding:6px 10px;vertical-align:top;border-top:1px solid var(--line)}
table.idx td:first-child{overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;font-weight:600}table.idx td.ch{white-space:nowrap;color:var(--muted);font-size:13px}
@media (max-width:900px){table.idx td.ch{display:none}table.idx td:first-child{white-space:normal}}
.card-accent{border-color:var(--accent);background:#eef3fb}
.lead{font-size:17px;color:var(--muted);max-width:720px}
.landing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:24px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;background:var(--panel)}
.card h2{font-size:17px;margin:0 0 8px}.card ul{margin:0;padding:0;list-style:none;font-size:14px}.card li{padding:2px 0}.card p{font-size:14px;color:var(--muted);margin:0}