/* ============================================================================
   vi.appliedidentities.com - the trust story + the Ledger
   VI institutional skin (steel signal, no commerce amber).
   Tokens locked in docs/web-rebuild-2026-07/00-DESIGN.md - approved 2026-07-03.
   Shared with Season 1 episodes (assets/episode.css is a subset of this).
   Production self-hosts Fraunces / IBM Plex Sans / IBM Plex Mono (woff2, no CDN).
   ========================================================================== */

:root{
  --ink:#0B0F14; --panel:#111721; --panel-2:#161E2A;
  --line:#1F2A38; --line-strong:#2C3B4E;
  --text:#E6EDF3; --muted:#93A4B4; --faint:#5C6B7A;
  --ok:#57C787; --warn:#E8A13D; --danger:#E5534B;
  --signal:#7FB4E8; --signal-dim:rgba(127,180,232,.14);
  --serif:"Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{background:var(--ink);}
body{
  background:
    linear-gradient(rgba(31,42,56,.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31,42,56,.28) 1px, transparent 1px),
    var(--ink);
  background-size:32px 32px,32px 32px,auto;
  color:var(--text); font-family:var(--sans); font-size:15px; line-height:1.55;
  margin:0; padding:0; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:920px; margin:0 auto; padding:0 24px 96px;}
h1,h2,h3,h4{text-wrap:balance; margin:0;}
p{margin:0 0 14px;} p:last-child{margin-bottom:0;}
a{color:var(--signal); text-decoration-color:var(--line-strong);}
a:hover{text-decoration-color:var(--signal);}

/* ---------- site nav ---------- */
.site-nav{max-width:1120px; margin:0 auto; display:flex; align-items:center;
  justify-content:space-between; gap:16px; padding:14px 24px;
  border-bottom:1px solid var(--line); background:var(--panel-2);}
.site-nav .brand{font-family:var(--serif); font-size:16px; font-weight:600; text-decoration:none; color:var(--text);}
.site-nav .links{display:flex; gap:20px; font-size:13px; color:var(--muted); flex-wrap:wrap;}
.site-nav .links a{color:var(--muted); text-decoration:none;}
.site-nav .links a.active{color:var(--signal);}
.site-nav .links a:hover{color:var(--signal);}

/* ---------- section rhythm ---------- */
.band{margin-top:56px; scroll-margin-top:24px;}
.band > .eyebrow{display:block; font-family:var(--mono); font-size:12px; font-weight:600;
  letter-spacing:.08em; text-transform:uppercase; color:var(--faint);
  border-bottom:1px solid var(--line); padding-bottom:8px; margin-bottom:22px;}
.band h2{font-size:22px; font-weight:600; line-height:1.25; margin-bottom:12px;}
.band h3{font-size:17px; font-weight:600; margin-bottom:8px;}
.body-copy{color:var(--muted); font-size:15px; line-height:1.7;}
.body-copy b,.body-copy strong{color:var(--text); font-weight:600;}

/* ---------- hero (the frame) ---------- */
.vi-hero{padding-top:56px;}
.vi-hero .eyebrow{font-family:var(--mono); font-size:12px; font-weight:600; letter-spacing:.1em;
  text-transform:uppercase; color:var(--faint);}
.vi-hero h1{font-family:var(--serif); font-size:44px; font-weight:600; letter-spacing:-.015em;
  line-height:1.08; margin-top:16px;}
.vi-hero .frame{color:var(--muted); font-size:17px; line-height:1.65; max-width:60ch; margin-top:20px;}
.vi-hero .frame b{color:var(--text); font-weight:600;}

/* ---------- buttons ---------- */
.btn{display:inline-block; border-radius:6px; padding:10px 20px; font-size:14px; font-weight:600;
  text-decoration:none; border:1px solid transparent; transition:all .18s ease-out; cursor:pointer;}
.btn:focus-visible{outline:2px solid var(--signal); outline-offset:2px;}
.btn-primary{background:var(--signal); color:var(--ink);}
.btn-primary:hover{filter:brightness(1.08);}
.btn-ghost{border-color:var(--signal); color:var(--signal); background:transparent;}
.btn-ghost:hover{background:var(--signal-dim);}
.hero-actions{display:flex; gap:12px; margin-top:26px; flex-wrap:wrap; align-items:center;}

/* ---------- pills ---------- */
.pill{display:inline-block; border-radius:9999px; padding:3px 11px; font-size:11.5px; font-weight:600;
  font-family:var(--mono); letter-spacing:.03em;}
.pill-ok{background:rgba(87,199,135,.14); color:var(--ok);}
.pill-warn{background:rgba(232,161,61,.14); color:var(--warn);}
.pill-danger{background:rgba(229,83,75,.14); color:var(--danger);}

/* ---------- two-col ---------- */
.two-col{display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:8px;}
.behavior{border:1px solid var(--line-strong); border-radius:10px; background:var(--panel);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03); padding:22px;}
.behavior h3{margin:0 0 8px; font-size:16px;}
.behavior p{margin:0 0 14px; font-size:13.5px; color:var(--muted); line-height:1.6;}

/* ---------- receipt: the signed instrument ---------- */
.receipt{border:1px solid var(--line-strong); border-left:3px solid var(--signal); border-radius:4px;
  background:var(--panel-2); font-family:var(--mono); font-size:13px; margin-top:8px;}
.receipt.declined{border-left-color:var(--danger);}
.receipt .r-head{display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap;
  padding:12px 20px; border-bottom:1px dashed var(--line-strong);}
.receipt .stamp{font-size:10.5px; letter-spacing:.14em; color:var(--faint); font-weight:600;}
.receipt .r-body{padding:8px 20px 14px;}
.receipt .row{display:grid; grid-template-columns:110px 1fr; gap:14px; padding:9px 0;
  border-bottom:1px solid var(--line);}
.receipt .row:last-child{border-bottom:none;}
.receipt .g{color:var(--faint); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; padding-top:2px;}
.receipt .v{color:var(--text);}
.receipt .v .sub{color:var(--faint); font-size:11.5px; margin-top:2px; word-break:break-all;}
.receipt .amt{color:var(--text); font-weight:700; font-variant-numeric:tabular-nums;}
.receipt .door-link{color:var(--signal); text-decoration:none; border-bottom:1px dotted var(--signal); font-size:12px;}

/* ---------- the chain diagram (taught once) ---------- */
#the-chain .chain{display:flex; align-items:stretch; gap:0; flex-wrap:wrap; margin-top:8px;}
.chain .node{border:1px solid var(--line-strong); background:var(--panel-2); border-radius:6px;
  padding:12px 16px; font-family:var(--mono); font-size:12.5px; color:var(--text);
  text-align:center; min-width:110px; display:flex; flex-direction:column; justify-content:center;}
.chain .node small{display:block; color:var(--faint); font-size:10.5px; margin-top:4px; font-family:var(--sans); line-height:1.4;}
.chain .arr{color:var(--signal); padding:0 10px; font-size:15px; align-self:center;}

/* ---------- slot (designed placeholder) ---------- */
.slot{border:1px dashed var(--line-strong); border-radius:6px; padding:24px; text-align:center;
  color:var(--faint); font-family:var(--mono); font-size:12px; line-height:1.7; background:var(--panel);}
.slot b{color:var(--muted); font-weight:600;}

/* ---------- stat counters ---------- */
.counters{display:flex; gap:28px; flex-wrap:wrap; margin-top:8px; border:1px solid var(--line);
  border-radius:10px; background:var(--panel-2); padding:20px 24px;}
.counters .stat{min-width:120px;}
.counters .n{font-family:var(--mono); font-size:24px; font-weight:600; color:var(--text); font-variant-numeric:tabular-nums;}
.counters .k{font-size:12.5px; color:var(--muted); margin-top:4px; line-height:1.5;}

/* ---------- season 1 cards ---------- */
.ep-cards{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:8px;}
.ep-card{border:1px solid var(--line); border-radius:10px; background:var(--panel-2); padding:18px;
  text-decoration:none; color:inherit; display:flex; flex-direction:column; gap:6px; transition:all .18s ease-out;}
.ep-card:hover{border-color:var(--line-strong); transform:translateY(-1px);}
.ep-card .num{font-family:var(--mono); font-size:11.5px; color:var(--faint); letter-spacing:.06em;}
.ep-card h3{font-family:var(--serif); font-size:17px; font-weight:600; margin:0; line-height:1.3;}
.ep-card:hover h3{color:var(--signal);}
.ep-card p{font-size:13px; color:var(--muted); margin:0;}

/* ---------- signature close ---------- */
.sig-close{font-family:var(--serif); font-size:30px; color:var(--text); margin-top:56px;
  border-top:1px solid var(--line); padding-top:32px; font-style:italic; text-align:center;}

/* ---------- the one research link ---------- */
.cross-link{margin-top:40px; text-align:center;}
.cross-link a{font-family:var(--serif); font-size:20px; color:var(--signal); text-decoration:none;
  border-bottom:1px solid var(--line-strong); padding-bottom:4px;}
.cross-link a:hover{border-color:var(--signal);}

/* ---------- ledger ---------- */
.ledger{list-style:none; margin:0; padding:0;}
.ledger li{display:grid; grid-template-columns:120px 1fr; gap:22px; padding:20px 0;
  border-bottom:1px solid var(--line);}
.ledger li:first-child{border-top:1px solid var(--line);}
.ledger .when{font-family:var(--mono); font-size:12.5px; color:var(--faint); letter-spacing:.02em; padding-top:2px;}
.ledger .what{color:var(--text);}
.ledger .what .proof{font-family:var(--mono); font-size:12px; color:var(--faint); margin-top:5px; word-break:break-all;}
.ledger .what .proof a{color:var(--signal); text-decoration-color:var(--line-strong);}
.ledger .slot-entry{color:var(--faint); font-style:italic;}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line); margin-top:56px; padding:28px 0 0;
  font-size:12.5px; color:var(--faint); font-family:var(--mono); line-height:1.7;}
.footer a{color:var(--faint);}

@media (max-width:760px){
  .vi-hero h1{font-size:32px;}
  .two-col{grid-template-columns:1fr;}
  .ep-cards{grid-template-columns:1fr;}
  .receipt .row{grid-template-columns:1fr; gap:4px;}
  .ledger li{grid-template-columns:1fr; gap:6px;}
  .chain .arr{transform:rotate(90deg); padding:6px 0;}
}
@media (prefers-reduced-motion:reduce){ *{transition:none !important;} }