/* ONCEINK docs + proof styles. Dark (default) + light tokens, same as /css/app.css. Radius <= 2px, 1px lines. */
:root,:root[data-theme="dark"]{color-scheme:dark;--bg:#0B0B0A;--surface:rgba(22,22,20,.72);--ink:#EDEBE6;--muted:#8A877F;--line:#2A2926;--strong:#3d3b37;--ember:#FF4F1A;--ash:#5E5B55;--on-ink:#0B0B0A;--lede:#c9c6bf;--glow:0 0 10px rgba(255,79,26,.5)}
:root[data-theme="light"]{color-scheme:light;--bg:#EEEEEA;--surface:#fff;--ink:#111;--muted:#6B6B66;--line:#D7D7D1;--strong:#111;--ember:#FF4F1A;--ash:#9A958C;--on-ink:#fff;--lede:#222;--glow:none}
:root{--sans:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;--mono:"Fragment Mono",ui-monospace,Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.55 var(--sans);overflow-x:hidden}
a{color:var(--ink);text-decoration-color:var(--ember);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{color:var(--ember)}
:focus-visible{outline:2px solid var(--ember);outline-offset:2px}
code,pre,.mono{font-family:var(--mono);font-size:.86em}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
/* nav */
.nav{border-bottom:1px solid var(--line);background:var(--bg)}
.nav .wrap{display:flex;align-items:center;gap:8px 20px;flex-wrap:wrap;min-height:60px;padding-top:8px;padding-bottom:8px}
.nav .brand{font-weight:900;font-size:1.25rem;letter-spacing:.02em;text-decoration:none;margin-right:auto}
.nav a.link{font-weight:800;text-decoration:none;font-size:.95rem;padding:10px 2px;min-height:44px;display:inline-flex;align-items:center}
.nav a.link[aria-current="page"]{border-bottom:2px solid var(--ember)}
.nav .buy{background:var(--ember);color:#0B0B0A;padding:0 14px;border-radius:2px}
.nav .buy:hover{color:var(--on-ink);background:var(--ink)}
.pill{font-family:var(--mono);font-size:.78rem;border:1px solid var(--strong);background:var(--surface);color:var(--ink);padding:0 10px;min-height:44px;border-radius:2px;display:inline-flex;align-items:center;cursor:pointer}
.pill[disabled]{cursor:default;color:var(--muted);border-color:var(--line)}
/* page */
header.hero{padding:56px 0 28px;border-bottom:1px solid var(--line)}
h1{font-weight:900;font-size:clamp(44px,9vw,104px);line-height:.92;letter-spacing:-.02em;margin:0 0 16px}
h1 .dot{color:var(--ember)}
.lede{font-size:1.2rem;max-width:42em;margin:0;color:var(--lede)}
main section{padding:36px 0;border-bottom:1px solid var(--line)}
h2{font-weight:900;font-size:clamp(26px,4vw,38px);line-height:1.05;letter-spacing:-.01em;margin:0 0 14px}
h3{font-weight:800;font-size:1.05rem;margin:22px 0 6px}
p{margin:0 0 12px;max-width:46em}
ol,ul{max-width:46em;padding-left:1.3em;margin:0 0 12px}
li{margin-bottom:6px}
.toc{display:flex;flex-wrap:wrap;gap:4px 16px;padding:0;list-style:none;margin:20px 0 0}
.toc a{font-weight:800;font-size:.9rem;display:inline-block;padding:10px 0}
.box{background:var(--surface);border:1px solid var(--strong);border-radius:2px;padding:16px 18px;max-width:46em}
.box p:last-child{margin-bottom:0}
.tag{font-family:var(--mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
pre{background:var(--surface);border:1px solid var(--strong);border-radius:2px;padding:14px 16px;overflow:auto;max-width:100%;margin:8px 0 14px;line-height:1.5;-webkit-overflow-scrolling:touch}
pre code{font-size:1em;white-space:pre}
pre.wrapcode code{white-space:pre-wrap;word-break:break-all}
:not(pre)>code{background:var(--surface);border:1px solid var(--line);padding:1px 5px;border-radius:2px;word-break:break-word}
.scroll{overflow-x:auto;max-width:100%;border:1px solid var(--strong);background:var(--surface);border-radius:2px;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-weight:800;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--strong);white-space:nowrap}
tr:last-child td{border-bottom:0}
td.num,th.num{font-family:var(--mono);white-space:nowrap}
.soft{color:var(--muted)}
.ember{color:var(--ember);font-weight:800}
.btn{font:800 1rem var(--sans);background:var(--ink);color:var(--on-ink);border:1px solid var(--strong);border-radius:2px;min-height:44px;padding:0 18px;cursor:pointer}
.btn:hover{background:var(--ember);border-color:var(--ember)}
.btn:disabled{opacity:.5;cursor:default}
input.field{font:400 .95rem var(--mono);width:100%;min-height:44px;padding:0 12px;border:1px solid var(--strong);border-radius:2px;background:var(--surface);color:var(--ink)}
.row{display:flex;gap:10px;flex-wrap:wrap;max-width:46em}
.row input{flex:1 1 220px;min-width:0}
details{border-top:1px solid var(--line);max-width:46em;padding:4px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{font-weight:800;cursor:pointer;padding:12px 0;min-height:44px;list-style:none;display:flex;gap:10px;align-items:center}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";font-family:var(--mono);color:var(--ember);width:1ch}
details[open] summary::before{content:"\2212"}
details p{margin-bottom:14px}
.status{display:inline-block;font-family:var(--mono);font-size:.82rem;border:1px solid var(--strong);padding:3px 10px;border-radius:2px;background:var(--surface)}
.status.ok{border-color:var(--ink)}
.status.warn{background:var(--ember);color:#0B0B0A;border-color:var(--ember)}
.result{margin-top:14px;max-width:46em;border:1px solid var(--strong);background:var(--surface);padding:14px 16px;border-radius:2px;display:none}
.result.show{display:block}
.result.bad{border-color:var(--ember)}
.result dl{margin:8px 0 0;display:grid;grid-template-columns:max-content 1fr;gap:4px 14px}
.result dt{color:var(--muted)}
.result dd{margin:0;word-break:break-all;font-family:var(--mono);font-size:.82rem}
footer{padding:28px 0 56px;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;gap:6px 20px;flex-wrap:wrap}
@media (max-width:560px){body{font-size:16px}.wrap{padding:0 16px}header.hero{padding:36px 0 22px}}
.nav .wrap{row-gap:0}
/* theme toggle (shared look with the app) */
.theme-btn{appearance:none;width:44px;height:44px;border:0;background:transparent;color:var(--muted);display:inline-grid;place-items:center;cursor:pointer;border-radius:2px}
.theme-btn:hover{color:var(--ink)}
.theme-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.theme-btn .i-sun{display:none}
:root[data-theme="light"] .theme-btn .i-sun{display:block}
:root[data-theme="light"] .theme-btn .i-moon{display:none}
.nav{background:var(--bg)}
h1 .dot,.nav .brand::before{text-shadow:var(--glow)}