/* Layout: docs reader — left rail of pages (and the open page's sections), one 72ch reading column */
:root{
  --bg:#FAFBFD; --bg-2:#EEF3F8; --fg:#0B2A3B; --muted:#4A6070; --rule:#D3DEE8;
  --accent:#2563EB; --sun:#FFB547; --sun-ink:#0B2A3B; --coral:#C2482A;
  --panel:#0B2A3B; --panel-fg:#E6EEF4; --panel-muted:#9DB4C4;
  --display:'Fraunces', Georgia, 'Times New Roman', serif;
  --body:'DM Sans', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
  --mono:'JetBrains Mono', ui-monospace, 'Courier New', monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0A1C27; --bg-2:#0F2533; --fg:#E6EEF4; --muted:#A8BCCB; --rule:#24404F;
  --accent:#6EA0FF; --sun:#FFC46B; --sun-ink:#0A1C27; --coral:#FF8A6B;
  --panel:#122E3E; --panel-fg:#E6EEF4; --panel-muted:#9DB4C4; color-scheme:dark }}
:root[data-theme="dark"]{
  --bg:#0A1C27; --bg-2:#0F2533; --fg:#E6EEF4; --muted:#A8BCCB; --rule:#24404F;
  --accent:#6EA0FF; --sun:#FFC46B; --sun-ink:#0A1C27; --coral:#FF8A6B;
  --panel:#122E3E; --panel-fg:#E6EEF4; --panel-muted:#9DB4C4; color-scheme:dark }
*{box-sizing:border-box}
html{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--body);font-size:16.5px;line-height:1.65;-webkit-text-size-adjust:100%}
img{max-width:100%}
a{color:var(--accent);text-underline-offset:2px}
a:focus-visible,button:focus-visible{outline:3px solid var(--sun);outline-offset:2px}
.bar{border-bottom:1px solid var(--rule);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.bar .in{max-width:1240px;margin:0 auto;padding-block:14px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.mark{font-family:var(--display);font-weight:700;font-size:22px;color:var(--fg);text-decoration:none;display:flex;align-items:center;gap:10px}
.mark i{width:13px;height:13px;border-radius:50%;background:var(--sun);display:inline-block}
.top{display:flex;gap:18px;flex-wrap:wrap;font-size:15px}
.top a{color:var(--fg);text-decoration:none}
.top a[aria-current]{color:var(--accent);font-weight:700}
.status{font-family:var(--mono);font-size:12px;padding:4px 10px;border:1px solid var(--rule);border-radius:999px;color:var(--muted)}
.layout{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:40px 80px}
@media (max-width:900px){.layout{grid-template-columns:minmax(0,1fr);gap:24px;padding-block:24px 64px}}
.rail{font-size:14.5px;min-width:0}
.rail .grp{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.rail ul{list-style:none;margin:0 0 24px;padding:0;display:flex;flex-direction:column;gap:2px}
.rail a{display:block;padding:5px 10px;border-radius:8px;color:var(--fg);text-decoration:none}
.rail a:hover{background:var(--bg-2)}
.rail a[aria-current]{background:var(--sun);color:var(--sun-ink);font-weight:700}
.rail ul.toc a{font-size:13.5px;color:var(--muted);padding:3px 10px}
@media (min-width:901px){.rail nav{position:sticky;top:24px;max-height:calc(100vh - 48px);overflow:auto}}
@media (max-width:900px){.rail ul.toc{display:none}.rail ul{flex-direction:row;flex-wrap:wrap;gap:6px}.rail a{border:1px solid var(--rule)}.rail ul{margin-bottom:12px}}
main{min-width:0;max-width:78ch}
main h1,main h2,main h3,main h4{text-wrap:balance;line-height:1.2;scroll-margin-top:16px}
main h1{font-family:var(--display);font-size:clamp(34px,5vw,52px);font-weight:700;letter-spacing:-.01em;margin:0 0 20px}
main h2{font-family:var(--display);font-size:28px;font-weight:700;margin:48px 0 14px;padding-top:20px;border-top:1px solid var(--rule)}
main h3{font-size:19px;margin:32px 0 10px}
main h4{font-size:16.5px;margin:24px 0 8px}
main p,main li{max-width:70ch}
main ul,main ol{padding-left:22px}
main li{margin:4px 0}
main hr{border:0;border-top:1px solid var(--rule);margin:40px 0}
main blockquote{margin:20px 0;padding:14px 18px;border:1.5px solid var(--fg);border-radius:12px;box-shadow:5px 5px 0 var(--sun)}
main blockquote p{margin:0}
main code{font-family:var(--mono);font-size:.86em;background:var(--bg-2);padding:1px 5px;border-radius:5px;overflow-wrap:anywhere}
main pre{background:var(--panel);color:var(--panel-fg);border-radius:14px;padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.6;margin:16px 0}
main pre code{background:none;padding:0;color:inherit;font-size:inherit;overflow-wrap:normal}
main pre + p em:only-child{font-size:14px;color:var(--muted)}
.tbl{overflow-x:auto;margin:16px 0;border:1px solid var(--rule);border-radius:12px}
.tbl table{border-collapse:collapse;width:100%;font-size:14.5px;line-height:1.5}
.tbl th{background:var(--bg-2);text-align:left;font-weight:700;font-size:13px}
.tbl th,.tbl td{padding:9px 12px;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child code{white-space:nowrap}
.pager{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:56px;padding-top:20px;border-top:1px solid var(--rule)}
.pager a{display:flex;flex-direction:column;text-decoration:none;color:var(--fg);padding:12px 16px;border:1px solid var(--rule);border-radius:12px;min-width:0}
.pager small{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.foot{border-top:1px solid var(--rule);color:var(--muted);font-size:14px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.foot .in{max-width:1240px;margin:0 auto;padding-block:24px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}