:root{
  --paper:#EDF2F4;--card:#FFFFFF;--ink:#2B2D42;--muted:#5F677B;--line:#D2D9E0;--accent:#D90429;--soft:#FBE3E7;
  --logo-l:block;--logo-d:none;
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){--paper:#1A1C2B;--card:#232638;--ink:#EDF2F4;--muted:#A3ABBD;--line:#363A52;--accent:#F0435D;--soft:#3A2230;--logo-l:none;--logo-d:block;color-scheme:dark}
}
:root[data-theme="dark"]{--paper:#1A1C2B;--card:#232638;--ink:#EDF2F4;--muted:#A3ABBD;--line:#363A52;--accent:#F0435D;--soft:#3A2230;--logo-l:none;--logo-d:block;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(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
img{max-width:100%}
.wrap{max-width:780px;margin-inline:auto;padding-inline:20px}
header{border-bottom:1px solid var(--line);background:var(--paper)}
header .wrap{max-width:1160px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:14px}
.brand img{height:40px;width:auto}
.logo-l{display:var(--logo-l)}.logo-d{display:var(--logo-d)}
.back{font-weight:600;font-size:15px;text-decoration:none}
nav.toc{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 8px}
nav.toc a{font-family:var(--f-mono);font-size:13px;text-decoration:none;padding:6px 10px;border:1px solid var(--line);border-radius:4px;color:var(--ink);background:var(--card)}
nav.toc a:hover{border-color:var(--accent);color:var(--accent)}
main{padding-block:12px 64px}
section{padding-top:40px;scroll-margin-top:16px}
section+section{border-top:1px solid var(--line);margin-top:40px}
h1{font-family:var(--f-display);font-stretch:118%;font-weight:900;font-size:clamp(30px,5vw,44px);line-height:1.05;margin:36px 0 0;text-wrap:balance}
h2{font-family:var(--f-display);font-stretch:112%;font-weight:800;font-size:clamp(24px,3.4vw,30px);line-height:1.1;margin:0 0 18px;text-wrap:balance}
h3{font-size:17px;font-weight:700;margin:26px 0 6px}
p,ul{margin:0 0 12px}
ul{padding-left:20px}
li{margin-bottom:6px}
.updated{font-family:var(--f-mono);font-size:13px;color:var(--muted);margin-top:10px}
.box{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px 18px;margin:0 0 14px}
.box dl{margin:0;display:grid;grid-template-columns:max-content minmax(0,1fr);gap:6px 18px}
.box dt{font-weight:600}
.box dd{margin:0}
@media (max-width:520px){.box dl{grid-template-columns:1fr}.box dd{margin-bottom:6px}}
.ph{background:var(--soft);color:var(--accent);font-family:var(--f-mono);font-size:14px;padding:1px 5px;border-radius:3px}
footer{border-top:1px solid var(--line);padding-block:24px 32px;font-size:13.5px;color:var(--muted)}