/* insynctech.io — InSync Tech, Inc.
   Stage 4 build stylesheet. Tokens per handoff §10.
   No build step: this file and the page HTML are the whole system. */

:root {
  --canvas:#f5f3f0; --surface:#ffffff; --band:#efece7;
  --ink:#14140f; --ink-body:#4a4741; --ink-muted:#8a857d;
  --hairline:#e4e0da; --rule-strong:#cfc9c0;
  --prod-canvas:#0a0a0c; --prod-surface:#131318; --prod-terminal:#060608;
  --prod-border:#25252b; --prod-ink:#ececf0; --prod-ink-dim:#5b5b62;
  --chrome:linear-gradient(180deg,#f6f7fa 0%,#cfd3dc 42%,#6f7480 72%,#c9cdd7 100%);
  --sig-live:#1f9d55; --sig-progress:#b7791f; --sig-unknown:#8a857d; --sig-error:#b91c1c;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px;
  --s7:48px; --s8:64px; --s9:96px; --s10:128px;
  --container:1100px; --gutter:32px; --measure:660px; --section-y:96px;
  --r-control:6px; --r-frame:8px; --r-card:12px; --r-pill:999px;
  --raised:0 1px 2px rgba(20,20,15,.04), 0 10px 28px rgba(20,20,15,.06);
  --t-control:.14s; --t-reveal:.25s; --t-section:.4s;
  --ease:cubic-bezier(.16,1,.3,1);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}

@font-face{font-family:'Inter';src:url('assets/fonts/Inter-Regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/Inter-Medium.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Inter';src:url('assets/fonts/Inter-SemiBold.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('assets/fonts/JetBrainsMono-Regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('assets/fonts/JetBrainsMono-SemiBold.woff2') format('woff2');font-weight:600;font-display:swap}
/* PENDING: drop the five woff2 files into /assets/fonts/. Until then the
   system falls back to the stacks above — layout is unaffected. */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.65;text-align:center;text-wrap:pretty;
  -webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--t-control) var(--ease),border-color var(--t-control) var(--ease)}
a:hover{color:var(--ink-muted)}
h1,h2,h3,h4{margin:0;font-weight:600;text-wrap:balance}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

/* ---- type scale ---- */
.h1{font-size:56px;line-height:1.05;letter-spacing:-.035em}
.h2{font-size:36px;line-height:1.12;letter-spacing:-.03em}
.h3{font-size:22px;line-height:1.25;letter-spacing:-.02em}
.lead{font-size:19px;line-height:1.55;letter-spacing:-.01em;color:var(--ink)}
.body{font-size:16px;line-height:1.65;color:var(--ink-body)}
.small{font-size:14px;line-height:1.6;color:var(--ink-body)}
.meta{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-muted)}
.measure{max-width:66ch;margin-inline:auto}
.measure-lead{max-width:62ch;margin-inline:auto}

/* ---- layout ---- */
.wrap{max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:0 var(--section-y)}
.stack{display:flex;flex-direction:column;align-items:center;gap:var(--s5)}
.grid{display:grid;gap:var(--s4)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

/* ---- header ---- */
.site-head{position:sticky;top:0;z-index:20;background:rgba(245,243,240,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--hairline)}
.site-head .inner{max-width:1376px;margin-inline:auto;padding:18px var(--gutter);
  display:flex;align-items:center;justify-content:space-between;gap:var(--s6)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.02em}
.brand .mark{width:18px;height:18px;border:1.5px solid var(--ink);border-radius:var(--r-pill);flex:none}
.nav{display:flex;gap:26px;font-size:13px;color:var(--ink-body)}
.nav a[aria-current="page"]{color:var(--ink);font-weight:600;border-bottom:1px solid var(--ink);padding-bottom:2px}
.nav a:hover{color:var(--ink)}
.nav-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);margin:4px 0}

/* ---- buttons ---- */
.btn{display:inline-block;padding:13px 22px;border-radius:var(--r-control);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t-control) var(--ease),background var(--t-control) var(--ease),border-color var(--t-control) var(--ease)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#000;color:#fff;transform:translateY(-1px)}
.btn-secondary{border-color:var(--ink);color:var(--ink);padding:12px 21px}
.btn-secondary:hover{background:var(--band);color:var(--ink)}
.btn-tertiary{border-color:var(--rule-strong);color:var(--ink-body);padding:12px 21px;font-weight:500}
.btn-tertiary:hover{border-color:var(--ink);color:var(--ink)}
.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}
.btn-row{display:flex;gap:var(--s3);justify-content:center;flex-wrap:wrap}
.route{font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  border-bottom:1px solid var(--rule-strong);padding-bottom:2px}
.route:hover{border-color:var(--ink);color:var(--ink)}
.route-row{display:flex;gap:var(--s4);justify-content:center;flex-wrap:wrap}

/* ---- cards ---- */
.card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:10px;
  transition:border-color var(--t-control) var(--ease),box-shadow var(--t-control) var(--ease)}
a.card:hover,.card-link:hover{border-color:var(--rule-strong);box-shadow:var(--raised);color:var(--ink)}
.card--emphasis{border-color:var(--ink)}
.card .num{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ink-muted)}
.card .kicker{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted)}

/* ---- band ---- */
.band{background:var(--band);border-radius:var(--r-card);padding:80px 40px;
  display:flex;flex-direction:column;align-items:center;gap:var(--s5)}

/* ---- status chip ---- */
.chip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--rule-strong);
  border-radius:var(--r-pill);padding:4px 11px;font-family:var(--mono);font-size:10px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-body);white-space:nowrap}
.chip .dot{width:6px;height:6px;border-radius:var(--r-pill);flex:none}
.chip--verified{border-color:var(--ink);color:var(--ink)}
.chip--draft{border-style:dashed}
.dot-live{background:var(--sig-live)}
.dot-progress{background:var(--sig-progress)}
.dot-unknown{background:var(--sig-unknown)}

/* ---- library entry ---- */
.entry{border-top:1px solid var(--hairline);padding:34px 0;display:flex;
  flex-direction:column;align-items:center;gap:var(--s3)}
.entry:last-child{border-bottom:1px solid var(--hairline)}
.entry .title-row{display:flex;gap:14px;align-items:baseline;justify-content:center;flex-wrap:wrap}
.define{max-width:66ch;border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);
  padding:9px 0;font-size:14px;line-height:1.6;color:var(--ink-muted)}
.define .term{font-family:var(--mono);font-size:13px;color:var(--ink)}
.parts{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:76ch;
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--ink-body)}
.parts span,.parts a{border:1px solid var(--hairline);border-radius:var(--r-control);padding:6px 10px}
.parts a:hover{border-color:var(--ink)}

/* ---- current-state ledger ---- */
.ledger{width:100%;display:flex;flex-direction:column}
.ledger .row{border-top:1px solid var(--hairline);padding:16px 0;display:grid;
  grid-template-columns:.9fr 1.7fr .5fr;gap:20px;align-items:center}
.ledger .row:last-child{border-bottom:1px solid var(--hairline)}
.ledger .prop{font-size:15px;font-weight:600}
.ledger .state{font-size:14px;line-height:1.55;color:var(--ink-body)}
.ledger .date{font-family:var(--mono);font-size:12px;color:var(--ink-muted)}
.band .ledger .row{border-color:var(--rule-strong)}

/* ---- product frame ---- */
.frame{width:100%;border:1px solid var(--rule-strong);border-radius:var(--r-frame);
  overflow:hidden;box-shadow:var(--raised);background:var(--prod-canvas)}
.frame .bar{background:var(--prod-surface);border-bottom:1px solid var(--prod-border);
  padding:10px 14px;display:flex;align-items:center;gap:10px}
.frame .bar .dot{width:8px;height:8px;border-radius:var(--r-pill);flex:none}
.frame .bar .label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:#8a8a93}
.frame .empty{padding:84px 24px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--prod-ink-dim)}
.terminal{background:var(--prod-terminal);border:1px solid var(--prod-border);
  border-radius:var(--r-frame);padding:18px 20px;font-family:var(--mono);font-size:13px;
  color:var(--prod-ink);text-align:left;overflow-x:auto}
.terminal .sigil{color:var(--prod-ink-dim)}
/* amber hover lives only on dark product surfaces */
.frame:hover{border-color:var(--rule-strong)}
.on-dark a:hover,.on-dark .ghost:hover{border-color:#f59e0b;color:var(--prod-ink)}

/* ---- forms ---- */
form{width:100%;max-width:460px;margin-inline:auto;display:flex;flex-direction:column;gap:var(--s3);text-align:left}
label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted)}
input,select,textarea{width:100%;font-family:var(--font);font-size:14px;color:var(--ink);
  background:var(--surface);border:1px solid var(--rule-strong);border-radius:var(--r-control);
  padding:13px 15px;transition:border-color var(--t-control) var(--ease),box-shadow var(--t-control) var(--ease)}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(20,20,15,.07)}
.field{display:flex;flex-direction:column;gap:6px}

/* ---- pending marker ---- */
.pending{display:inline-block;font-family:var(--mono);font-size:22px;font-weight:600;
  border:1px dashed var(--rule-strong);border-radius:var(--r-control);padding:10px 18px;color:var(--ink-muted)}

/* ---- prose carve-out: long paper prose + legal bodies are left-aligned ---- */
.prose{max-width:var(--measure);margin-inline:auto;text-align:left;font-size:16px;line-height:1.75;color:var(--ink-body)}
.prose h2{font-size:22px;line-height:1.25;letter-spacing:-.02em;color:var(--ink);margin:36px 0 12px}
.prose h3{font-size:17px;margin:28px 0 8px;color:var(--ink)}
.prose p{margin:0 0 16px}
.prose ul{list-style:disc;padding-left:20px;margin:0 0 16px}
.prose li{margin-bottom:8px}
.prose a{border-bottom:1px solid var(--rule-strong)}
.toc{max-width:var(--measure);margin-inline:auto;text-align:left;border:1px solid var(--hairline);
  border-radius:var(--r-card);background:var(--surface);padding:20px 24px}
.toc ol{margin:0;padding-left:20px;font-size:14px;line-height:1.9;color:var(--ink-body)}

/* ---- footer ---- */
.site-foot{border-top:1px solid var(--hairline);margin-top:var(--s9)}
.site-foot .inner{max-width:1164px;margin-inline:auto;padding:48px var(--gutter) 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.site-foot h4{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.site-foot ul{display:flex;flex-direction:column;gap:9px;font-size:13px;color:var(--ink-muted);margin-top:9px}
.site-foot a:hover{color:var(--ink)}
.grants{background:var(--prod-canvas);border-radius:var(--r-frame);padding:16px 20px;
  display:inline-flex;align-items:center;justify-content:center;min-height:52px;
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--prod-ink-dim)}
.legal-line{font-size:12px;color:var(--ink-muted)}

/* ---- skip link ---- */
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--gutter);top:10px;z-index:50;background:var(--ink);color:#fff;padding:10px 16px;border-radius:var(--r-control)}

/* ---- mobile ---- */
@media (max-width:1024px){
  :root{--gutter:20px;--section-y:48px}
  .h1{font-size:36px;line-height:1.08}
  .h2{font-size:28px;line-height:1.15}
  .h3{font-size:20px}
  .lead{font-size:17px}
  .nav{display:none}
  .nav-toggle{display:block}
  .site-head.open .nav{display:flex;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;background:var(--canvas);border-bottom:1px solid var(--hairline)}
  .site-head.open .nav a{padding:16px var(--gutter);border-top:1px solid var(--hairline);font-size:16px;min-height:44px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .band{padding:40px 22px}
  .btn-row{flex-direction:column;width:100%}
  .btn{padding:14px 20px;font-size:15px}
  .btn-row .btn,form .btn{width:100%}
  .site-head .btn{width:auto;padding:11px 16px;font-size:13px;white-space:nowrap}
  .brand{white-space:nowrap}
  .ledger .row{grid-template-columns:1fr;gap:5px;text-align:center;padding:14px 0}
  .site-foot .inner{grid-template-columns:1fr;gap:24px}
  .site-head .inner{padding:14px var(--gutter)}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

@media print{
  .site-head,.nav-toggle,.btn{display:none}
  body{background:#fff}
}