:root{
  --paper:#fbfaf8;
  --ink:#191817;
  --muted:#6f6b66;
  --faint:#9a958f;
  --line:#e7e3dd;
  --line-strong:#d6d1c9;
  --sans:"Hanken Grotesk",-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:860px;margin:0 auto;padding:0 28px}
.label{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}

/* reveal */
@keyframes up{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.r{animation:up .6s both}
.r2{animation-delay:.08s}.r3{animation-delay:.16s}.r4{animation-delay:.24s}
@media(prefers-reduced-motion:reduce){.r,.pulse{animation:none}}

/* nav (shared across all pages) */
.site-nav{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(251,250,248,.92);backdrop-filter:blur(8px);z-index:10}
.site-nav .wrap{display:flex;justify-content:space-between;align-items:center;height:64px;gap:20px}
.brand{font-weight:700;letter-spacing:-.01em;font-size:16px}
.brand span{color:var(--faint);font-weight:500}
.nav-links{display:flex;gap:24px}
.nav-links a{font-size:14px;color:var(--muted);transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
@media(max-width:720px){.nav-links a:not(.gh){display:none}}

/* footer (shared) */
.site-footer{border-top:1px solid var(--line);padding:42px 0 60px;margin-top:8px}
.site-footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.site-footer a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}
.site-footer a:hover{color:var(--ink)}
.site-footer .links{display:flex;gap:20px;flex-wrap:wrap}

/* ============ documentation pages (prose) ============ */
.doc .content{max-width:760px;margin:0 auto;padding:56px 28px 24px}
.doc .content h1{font-size:38px;font-weight:700;letter-spacing:-.025em;line-height:1.1;margin-bottom:8px}
.doc .content h2{font-size:24px;font-weight:700;letter-spacing:-.015em;margin:44px 0 14px}
.doc .content h3{font-size:18px;font-weight:600;margin:30px 0 10px}
.doc .content p{margin:14px 0;color:#2c2a27}
.doc .content ul,.doc .content ol{margin:14px 0;padding-left:24px}
.doc .content li{margin:7px 0;color:#2c2a27}
.doc .content a{text-decoration:underline;text-underline-offset:2px}
.doc .content a:hover{color:#000}
.doc .content strong{font-weight:600}
.doc .content code{font-family:var(--mono);font-size:13.5px;background:#fff;border:1px solid var(--line);border-radius:5px;padding:1px 6px}
.doc .content pre{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px;overflow-x:auto;margin:18px 0}
.doc .content pre code{background:none;border:0;padding:0;font-size:13px;line-height:1.6}
.doc .content blockquote{border-left:2px solid var(--line-strong);background:#fff;margin:18px 0;padding:14px 18px;border-radius:0 8px 8px 0;color:var(--muted)}
.doc .content blockquote p{margin:0;color:var(--muted)}
.doc .content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.doc .content th,.doc .content td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.doc .content th{background:#fff;font-weight:600}
.doc .content img,.doc .content video{max-width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:8px;margin:18px 0}
.doc .content hr{border:0;border-top:1px solid var(--line);margin:34px 0}

/* ============ landing page ============ */
.home header{padding:88px 0 72px;border-bottom:1px solid var(--line)}
.home .eyebrow{margin-bottom:24px}
.home h1{font-size:clamp(36px,5.6vw,56px);line-height:1.08;font-weight:700;letter-spacing:-.025em;max-width:18ch}
.home .sub{margin:26px 0 0;font-size:18px;line-height:1.55;color:var(--muted);max-width:58ch}
.home .sub b{color:var(--ink);font-weight:600}
.actions{display:flex;gap:14px;align-items:center;margin-top:36px;flex-wrap:wrap}
.btn{font-size:14px;font-weight:600;padding:12px 20px;border-radius:8px;border:1px solid var(--ink);transition:.15s}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.primary:hover{background:#000}
.btn.secondary{border-color:var(--line-strong)}
.btn.secondary:hover{border-color:var(--ink)}
.spec{margin-top:32px;display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:12.5px;color:var(--faint)}
.spec b{color:var(--muted);font-weight:500}
.home section{padding:72px 0;border-bottom:1px solid var(--line)}
.home .head{margin-bottom:40px}
.home .head h2{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-top:12px}
.home .head p{color:var(--muted);max-width:58ch;margin-top:12px}

.diagram{border:1px solid var(--line);border-radius:12px;background:#fff;padding:24px 20px;margin-bottom:28px;overflow:hidden}
.diagram svg{width:100%;height:auto;display:block}
.pulse{animation:flow 2.9s linear infinite}
.pulse.trail{animation-delay:-.12s;opacity:.25}
@keyframes flow{0%{transform:translateX(0);opacity:0}6%{opacity:1}94%{opacity:1}100%{transform:translateX(567px);opacity:0}}

.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
@media(max-width:600px){.steps{grid-template-columns:1fr}}
.step{background:var(--paper);padding:26px 24px}
.step .n{font-family:var(--mono);font-size:13px;color:var(--faint)}
.step h3{font-size:17px;font-weight:600;margin:13px 0 6px;letter-spacing:-.01em}
.step p{font-size:14.5px;color:var(--muted)}

.why p{color:var(--muted);max-width:62ch;margin-bottom:14px}
.why p:last-child{margin-bottom:0}
.why b{color:var(--ink);font-weight:600}
.why a{text-decoration:underline;text-underline-offset:2px}

.notice{border:1px solid var(--line-strong);border-radius:10px;padding:26px 28px;background:#fff}
.notice .label{margin-bottom:14px;color:var(--muted)}
.notice h3{font-size:18px;font-weight:600;letter-spacing:-.01em;margin-bottom:12px}
.notice p{color:var(--muted);font-size:15px;max-width:64ch;margin-top:10px}
.notice code{font-family:var(--mono);font-size:13px;background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--ink)}
.notice .err{display:block;margin:14px 0;font-family:var(--mono);font-size:12.5px;line-height:1.5;color:var(--muted);background:var(--paper);border-left:2px solid var(--line-strong);padding:12px 14px;border-radius:0 6px 6px 0;white-space:pre-wrap}
.notice a{text-decoration:underline;text-underline-offset:2px;color:var(--ink)}

.doclist{border-top:1px solid var(--line)}
.doclist .item{display:grid;grid-template-columns:34px 1fr auto;gap:18px;align-items:baseline;padding:22px 4px;border-bottom:1px solid var(--line);transition:padding .15s}
.doclist .item:hover{padding-left:14px}
.doclist .num{font-family:var(--mono);font-size:13px;color:var(--faint)}
.doclist h3{font-size:18px;font-weight:600;letter-spacing:-.01em}
.doclist p{font-size:14px;color:var(--muted);margin-top:3px}
.doclist .go{font-family:var(--mono);font-size:13px;color:var(--faint);transition:color .15s}
.doclist .item:hover .go{color:var(--ink)}