:root{
  --ink:#1B2530; --body:#2E3A46; --muted:#5D6975; --paper:#FFFFFF; --wash:#F3F5F7;
  --rule:#DDE2E7; --accent:#1C5E9E; --accent-soft:#E7F0F9; --note:#FFF7E6; --note-rule:#E8C77A;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ink:#EEF2F6; --body:#CBD3DB; --muted:#93A0AC; --paper:#121A21; --wash:#18222B;
    --rule:#2A3742; --accent:#7DB5EC; --accent-soft:#1A2C3D; --note:#2A2414; --note-rule:#7A6330;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--body);
  font-family:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:17px;line-height:1.65}
a{color:var(--accent);text-underline-offset:2px}
a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.top{border-bottom:1px solid var(--rule);background:var(--wash)}
.top-in{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.brand{font-weight:700;color:var(--ink);text-decoration:none;font-size:18px;letter-spacing:-.01em}
.brand span{color:var(--accent)}
.top nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap;font-size:15px}
.top nav a{color:var(--muted);text-decoration:none}
.top nav a:hover,.top nav a[aria-current]{color:var(--ink);text-decoration:underline}
.hero{max-width:1080px;margin:0 auto;padding:48px 24px 8px}
.hero h1{color:var(--ink);font-size:clamp(30px,5vw,44px);line-height:1.1;margin:0 0 12px;letter-spacing:-.02em;font-weight:700}
.hero p.lede{font-size:19px;color:var(--muted);margin:0 0 20px;max-width:62ch}
.facts{display:flex;flex-wrap:wrap;gap:8px 28px;margin:0;padding:16px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);font-size:15px}
.facts div{display:flex;gap:8px}
.facts dt{color:var(--muted)}
.facts dd{margin:0;color:var(--ink);font-weight:600}
.layout{max-width:1080px;margin:0 auto;padding:32px 24px 64px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:56px}
.toc{position:sticky;top:24px;align-self:start;font-size:14.5px}
.toc p{margin:0 0 8px;color:var(--ink);font-weight:700}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:t}
.toc li{counter-increment:t;margin:0}
.toc a{display:flex;gap:10px;padding:5px 0;color:var(--muted);text-decoration:none;line-height:1.35}
.toc a::before{content:counter(t);min-width:1.4em;color:var(--accent);font-variant-numeric:tabular-nums}
.toc a:hover{color:var(--ink)}
main{max-width:70ch}
main>section{counter-increment:s;padding-top:8px;margin-bottom:40px}
main{counter-reset:s}
main h2{color:var(--ink);font-size:24px;line-height:1.25;margin:0 0 14px;letter-spacing:-.01em;display:flex;gap:14px;align-items:baseline}
main h2::before{content:counter(s);color:var(--accent);font-size:18px;font-variant-numeric:tabular-nums;min-width:1.4em}
main h3{color:var(--ink);font-size:18px;margin:26px 0 8px}
main p{margin:0 0 14px}
main ul,main ol{margin:0 0 16px;padding-left:22px}
main li{margin:4px 0}
strong{color:var(--ink)}
.summary{background:var(--accent-soft);border-left:3px solid var(--accent);padding:18px 22px;margin:0 0 40px;border-radius:0 6px 6px 0}
.summary p{margin:0 0 8px;font-weight:700;color:var(--ink)}
.summary ul{margin:0;padding-left:20px}
.note{background:var(--note);border-left:3px solid var(--note-rule);padding:14px 18px;border-radius:0 6px 6px 0;margin:0 0 16px}
.table-wrap{overflow-x:auto;margin:0 0 18px;border:1px solid var(--rule);border-radius:6px}
table{border-collapse:collapse;width:100%;font-size:15.5px;min-width:520px}
th,td{text-align:left;vertical-align:top;padding:11px 14px;border-bottom:1px solid var(--rule)}
th{background:var(--wash);color:var(--ink);font-weight:700}
tr:last-child td{border-bottom:0}
.contact{display:grid;grid-template-columns:max-content 1fr;gap:6px 22px;margin:0 0 16px;padding:18px 20px;background:var(--wash);border-radius:6px}
.contact dt{color:var(--muted)}
.contact dd{margin:0;color:var(--ink)}
.steps{counter-reset:st;list-style:none;padding:0}
.steps li{counter-increment:st;position:relative;padding:0 0 14px 44px;margin:0}
.steps li::before{content:counter(st);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--paper);display:grid;place-items:center;font-weight:700;font-size:15px}
.btn{display:inline-block;background:var(--accent);color:var(--paper);padding:11px 18px;border-radius:6px;text-decoration:none;font-weight:700}
.btn:hover{filter:brightness(1.08)}
footer{border-top:1px solid var(--rule);background:var(--wash);font-size:14.5px;color:var(--muted)}
.foot-in{max-width:1080px;margin:0 auto;padding:22px 24px;display:flex;gap:10px 24px;flex-wrap:wrap}
.foot-in a{color:var(--muted)}
@media (max-width:860px){
  .layout{grid-template-columns:1fr;gap:8px;padding-top:20px}
  .toc{position:static;border:1px solid var(--rule);border-radius:6px;padding:14px 16px;margin-bottom:24px}
  .hero{padding-top:32px}
  body{font-size:16.5px}
}
.single{grid-template-columns:minmax(0,1fr)}
.single main h2::before{content:none}
.single main{max-width:72ch}
@media print{.top nav,.toc{display:none}.layout{display:block}a{color:inherit}}