:root{--paper:#f4f4f2;--ink:#0f1729;--accent:#e05a33;--muted:#626875;--line:#d8dbde;--card:#fff;--notice:#f9e5de;--panel-muted:#aab0bd;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;--mono:"Space Mono",ui-monospace,Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.5 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--ink);color:#fff;padding:8px 12px;z-index:10}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.mark{width:30px;height:30px;border:2px solid var(--accent);border-radius:4px;display:grid;place-items:center;flex:none}
.mark i{width:10px;height:10px;background:var(--accent);border-radius:2px;display:block}
.brand b{font-weight:800;font-size:26px;line-height:1.1;display:block}
.brand small{font:400 10px/1 var(--mono);color:var(--muted);display:block;margin-top:2px}
nav.main{display:flex;gap:4px 20px;flex-wrap:wrap}
nav.main a{font-size:14px;font-weight:500;text-decoration:none;padding:10px 0;border-bottom:2px solid transparent}
nav.main a:hover{border-color:var(--line)}
nav.main a[aria-current=page]{color:var(--accent);border-color:var(--accent)}

.label{font:400 11px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:0 0 12px}
h1{font-weight:800;font-size:clamp(34px,6.4vw,64px);line-height:1.05;letter-spacing:-.02em;margin:0 0 20px}
h1 span{display:block}
h2{font-weight:800;font-size:clamp(26px,3.6vw,36px);line-height:1.12;letter-spacing:-.01em;margin:0 0 24px}
h3{font-weight:700;font-size:17px;line-height:1.3;margin:0 0 6px}
p{margin:0 0 16px}
.lede{font-size:18px;line-height:1.45;color:var(--muted);max-width:34em}
.muted{color:var(--muted)}
section{padding:56px 0}
section+section{border-top:1px solid var(--line)}

.hero{padding:48px 0 56px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center}
.hero figure{margin:0}
.hero img{border-radius:4px;aspect-ratio:16/10;object-fit:cover;width:100%}
figcaption{font:400 10px/1.4 var(--mono);text-transform:uppercase;color:var(--muted);margin-top:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 28px;background:var(--accent);color:#fff;
  font:600 16px/1 var(--sans);border:0;border-radius:4px;text-decoration:none;cursor:pointer;transition:transform .1s ease,filter .1s ease}
.btn:hover{filter:brightness(.95)}.btn:active{transform:scale(.98)}
.btn[disabled]{background:#d5d8dd;color:#6b7280;cursor:not-allowed;filter:none;transform:none}
.btn.outline{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.cta-note{font-size:13px;color:var(--muted);margin-top:12px}

ol.steps{list-style:none;margin:0;padding:0;counter-reset:s}
ol.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:0 8px;padding:20px 0;border-top:1px solid var(--line)}
ol.steps li:last-child{border-bottom:1px solid var(--line)}
ol.steps li::before{content:counter(s,decimal-leading-zero);font:400 13px/1.7 var(--mono);color:var(--accent)}
ol.steps p{margin:0;color:var(--muted);max-width:44em}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:4px;padding:24px}
.card p{margin:0;color:var(--muted);font-size:15px}
.panel{background:var(--ink);color:#fff;border-radius:4px;padding:32px}
.panel .label{color:var(--panel-muted)}
.panel ul{margin:0;padding:0;list-style:none}
.panel li{padding:14px 0 14px 28px;border-top:1px solid rgba(255,255,255,.14);position:relative}
.panel li:first-child{border-top:0;padding-top:0}
.panel li::before{content:"";position:absolute;left:0;top:22px;width:10px;height:10px;border:2px solid var(--accent);border-radius:2px}
.panel li:first-child::before{top:8px}
.notice{background:var(--notice);border-radius:4px;padding:20px 24px}
.notice h3{margin-bottom:8px}.notice p{margin:0}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}
.prose{max-width:46em}
.prose h3{margin-top:28px}
.ack{list-style:none;padding:0;margin:0}
.ack li{padding:16px 0 16px 36px;border-top:1px solid var(--line);position:relative;font-weight:600}
.ack li::before{content:"";position:absolute;left:0;top:18px;width:18px;height:18px;border:2px solid var(--ink);border-radius:2px}
dl.faq{margin:0}
dl.faq dt{font-weight:700;font-size:17px;padding-top:20px;border-top:1px solid var(--line)}
dl.faq dd{margin:6px 0 20px;color:var(--muted);max-width:46em}

form.stack{display:grid;gap:12px;max-width:420px}
.field{position:relative}
.field label{font-size:13px;color:var(--muted);display:block;margin-bottom:6px}
.field input{width:100%;min-height:56px;padding:0 16px;font:400 17px/1 var(--sans);color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:4px}
.field input:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}
.field input.code{font-family:var(--mono);font-size:24px;letter-spacing:.3em}
.status{min-height:24px;font-size:14px;margin:4px 0 0}
.status.err{color:#b3261e}.status.ok{color:#1e6b3a}
[hidden]{display:none!important}

footer.site{border-top:1px solid var(--line);padding:28px 0 40px;font-size:13px;color:var(--muted)}
footer.site .wrap{display:flex;gap:12px 24px;justify-content:space-between;flex-wrap:wrap}
footer.site nav{display:flex;gap:8px 20px;flex-wrap:wrap}

@media (max-width:800px){
  .hero .wrap,.split{grid-template-columns:1fr;gap:28px}
  .grid3{grid-template-columns:1fr}
  section{padding:40px 0}
  .panel{padding:24px}
}
@media (prefers-reduced-motion:reduce){.btn{transition:none}.btn:active{transform:none}}