/* decisionspaceintegrity.com — static site (W1).
   No frameworks, no JavaScript. Refined dark "measurement instrument / technical editorial".
   Type: Fraunces (display serif) · Hanken Grotesk (body) · IBM Plex Mono (technical signal).
   One accent (signal green = "surfaced/visible"). Mobile-responsive. Cloudflare Pages ready. */

:root {
  --bg:#0b0d10; --bg-2:#0e1116; --panel:#14181d; --panel-2:#171d24;
  --line:#232a32; --line-2:#2f3842;
  --ink:#ecebe3; --ink-dim:#b7bbc2; --muted:#868d97; --faint:#586069;
  --accent:#8ce6a8; --accent-deep:#3aa873; --accent-ghost:rgba(140,230,168,.12);
  --warn:#e7976f;
  --serif:"Fraunces",Georgia,serif;
  --sans:"Hanken Grotesk",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --maxw:1080px;
  --ease:cubic-bezier(.2,.6,.2,1);
}

* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body {
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--sans); font-size:17px; line-height:1.65; font-weight:380;
  letter-spacing:.005em;
  background-image:
    radial-gradient(900px 500px at 78% -8%, rgba(140,230,168,.07), transparent 60%),
    radial-gradient(700px 600px at -10% 12%, rgba(80,120,160,.06), transparent 55%);
  background-attachment:fixed;
}
::selection { background:var(--accent); color:#06150c; }

a { color:var(--accent); text-decoration:none; }
a:hover { color:#b7f0c8; }
strong { font-weight:620; color:#fbfaf4; }
em { font-style:italic; color:var(--ink); }

.wrap { max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,5vw,40px); }
.mono { font-family:var(--mono); font-feature-settings:"ss01"; }
.eyebrow {
  font-family:var(--mono); font-size:12px; letter-spacing:.22em; text-transform:uppercase;
  color:var(--accent); margin:0 0 18px;
}
.muted { color:var(--muted); }

/* ---------- header ---------- */
.site-head {
  position:sticky; top:0; z-index:20;
  backdrop-filter:saturate(140%) blur(10px);
  background:linear-gradient(to bottom, rgba(11,13,16,.92), rgba(11,13,16,.66));
  border-bottom:1px solid var(--line);
}
.site-head .wrap { display:flex; align-items:center; justify-content:space-between; height:64px; }
.brand { font-family:var(--mono); font-weight:600; letter-spacing:.04em; color:var(--ink); font-size:15px; }
.brand b { color:var(--accent); }
.brand .dot { color:var(--accent); }
.nav { display:flex; gap:26px; }
.nav a { font-size:14.5px; color:var(--ink-dim); letter-spacing:.01em; position:relative; padding:4px 0; }
.nav a:hover { color:var(--ink); }
.nav a.active { color:var(--ink); }
.nav a.active::after {
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px; background:var(--accent); border-radius:2px;
}

/* ---------- typography ---------- */
h1,h2,h3 { font-family:var(--serif); font-weight:560; color:#fcfbf5; letter-spacing:-.01em; line-height:1.08; }
h1 { font-size:clamp(2.5rem,6vw,4.3rem); font-weight:540; margin:0 0 .5em; font-optical-sizing:auto; }
h2 { font-size:clamp(1.7rem,3.4vw,2.5rem); margin:0 0 .55em; }
h3 { font-size:1.32rem; margin:0 0 .4em; }
p { margin:0 0 1.1em; color:var(--ink-dim); max-width:64ch; }
.lead { font-size:1.18rem; color:var(--ink); }

/* ---------- buttons ---------- */
.cta-row { display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }
.btn {
  display:inline-flex; align-items:center; gap:.5em; font-family:var(--sans); font-weight:560;
  font-size:15px; letter-spacing:.01em; padding:.72em 1.25em; border-radius:9px; cursor:pointer;
  border:1px solid transparent; transition:transform .15s var(--ease), background .2s, border-color .2s;
}
.btn:hover { transform:translateY(-2px); }
.btn-primary { background:var(--accent); color:#06160c; }
.btn-primary:hover { background:#a6efbd; color:#06160c; }
.btn-ghost { background:transparent; color:var(--ink); border-color:var(--line-2); }
.btn-ghost:hover { border-color:var(--accent); color:var(--ink); }
.btn-arrow::after { content:"→"; font-family:var(--mono); opacity:.8; }

/* ---------- sections / cards ---------- */
section { padding:clamp(56px,9vw,108px) 0; border-top:1px solid var(--line); }
section.hero { border-top:none; padding-top:clamp(48px,8vw,92px); }
.section-head { max-width:60ch; margin-bottom:40px; }

.grid { display:grid; gap:20px; }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.card {
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line); border-radius:14px; padding:26px 24px;
  transition:border-color .25s, transform .25s var(--ease);
}
.card:hover { border-color:var(--line-2); transform:translateY(-3px); }
.card h3 { color:#fcfbf5; }
.card p { margin-bottom:0; }
.card .idx { font-family:var(--mono); font-size:12px; color:var(--accent); letter-spacing:.18em; }

ul.clean { list-style:none; padding:0; margin:0; }
ul.clean li { position:relative; padding:14px 0 14px 26px; border-bottom:1px solid var(--line); color:var(--ink-dim); }
ul.clean li:last-child { border-bottom:none; }
ul.clean li::before { content:""; position:absolute; left:0; top:22px; width:9px; height:9px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 4px var(--accent-ghost); }
ul.clean li strong { display:inline; }

/* ---------- hero decision-space motif ---------- */
.hero .wrap { display:grid; grid-template-columns:1.15fr .85fr; gap:56px; align-items:center; }
.figure {
  background:linear-gradient(180deg,var(--panel),#10151a);
  border:1px solid var(--line-2); border-radius:16px; padding:22px 22px 18px;
  box-shadow:0 30px 80px -40px rgba(0,0,0,.8);
}
.figure .fig-head { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:16px; }
.figure .fig-title { font-family:var(--mono); font-size:12px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); }
.figure .vis { font-family:var(--mono); font-size:13px; color:var(--accent); }
.path { display:flex; align-items:center; gap:12px; padding:11px 0; border-top:1px solid var(--line); }
.path:first-of-type { border-top:none; }
.path .dotp { width:11px; height:11px; border-radius:50%; flex:0 0 auto; }
.path .label { font-size:14.5px; }
.path .tag { margin-left:auto; font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; }
.path.surfaced .dotp { background:var(--accent); box-shadow:0 0 12px var(--accent); }
.path.surfaced .label { color:var(--ink); }
.path.surfaced .tag { color:var(--accent); }
.path.missing .dotp { background:transparent; border:1.5px solid var(--faint); }
.path.missing .label { color:var(--faint); }
.path.missing .tag { color:var(--faint); }
.figure .fig-foot { margin-top:14px; padding-top:12px; border-top:1px dashed var(--line-2); font-family:var(--mono); font-size:11px; color:var(--faint); letter-spacing:.04em; }

/* ---------- the one-line band ---------- */
.band { background:var(--bg-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.band .wrap { padding:38px 0; }
.band .oneliner { font-family:var(--mono); font-size:clamp(.95rem,2.1vw,1.25rem); color:var(--ink); letter-spacing:.01em; }
.band .oneliner .hl { color:var(--accent); }

/* ---------- flow (audit -> recommend -> re-audit -> evidence) ---------- */
.flow { display:flex; flex-wrap:wrap; gap:10px; align-items:stretch; }
.flow .step { flex:1 1 160px; background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:18px; }
.flow .step .n { font-family:var(--mono); font-size:11px; color:var(--accent); letter-spacing:.16em; }
.flow .step h3 { font-size:1.05rem; margin:.5em 0 .3em; }
.flow .step p { font-size:14.5px; margin:0; }

/* ---------- trust chain (numbered stepper) ---------- */
.chain { counter-reset:step; max-width:760px; }
.chain .link { position:relative; display:flex; gap:18px; padding:0 0 26px 0; }
.chain .link:last-child { padding-bottom:0; }
.chain .num {
  flex:0 0 auto; width:34px; height:34px; border-radius:50%; border:1px solid var(--accent-deep);
  color:var(--accent); font-family:var(--mono); font-size:14px; display:grid; place-items:center; background:var(--accent-ghost);
}
.chain .link:not(:last-child)::before {
  content:""; position:absolute; left:17px; top:34px; bottom:2px; width:1px; background:linear-gradient(var(--accent-deep),transparent);
}
.chain .body h3 { font-size:1.08rem; margin:.25em 0 .25em; }
.chain .body p { font-size:14.5px; margin:0; }

/* ---------- run options ---------- */
.runline { font-family:var(--mono); font-size:14px; color:var(--ink); background:#0a0c0f; border:1px solid var(--line-2); border-radius:8px; padding:10px 14px; display:inline-block; }
.runline .c { color:var(--accent); }

/* ---------- callout / not-list ---------- */
.callout { border-left:3px solid var(--accent); background:var(--accent-ghost); border-radius:0 10px 10px 0; padding:18px 22px; }
.callout p { margin:0; color:var(--ink); }
.not-grid .card { border-left:3px solid var(--warn); }
.not-grid .card h3 { color:#fcfbf5; }

/* ---------- placeholder chips (contact) ---------- */
.chip { display:inline-flex; align-items:center; gap:.5em; font-family:var(--mono); font-size:13px; color:var(--ink-dim); border:1px dashed var(--line-2); border-radius:8px; padding:.6em 1em; }
.chip .ph { color:var(--faint); font-size:11px; letter-spacing:.1em; text-transform:uppercase; }

/* ---------- footer ---------- */
.site-foot { border-top:1px solid var(--line); background:var(--bg-2); padding:46px 0 60px; }
.site-foot .claim { font-style:italic; color:var(--muted); max-width:70ch; margin-bottom:26px; font-size:14.5px; }
.site-foot .row { display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px; align-items:center; font-family:var(--mono); font-size:12.5px; color:var(--faint); letter-spacing:.04em; }
.site-foot .row a { color:var(--muted); }
.site-foot .row a:hover { color:var(--ink); }
.draftflag { font-family:var(--mono); font-size:11px; color:var(--warn); border:1px solid rgba(231,151,111,.4); border-radius:6px; padding:.3em .7em; letter-spacing:.08em; text-transform:uppercase; }
.statusflag { font-family:var(--mono); font-size:11px; color:var(--muted); border:1px solid var(--line-2); border-radius:6px; padding:.3em .7em; letter-spacing:.08em; text-transform:uppercase; }

/* ---------- audit example (static; no JS, not connected to the product) ---------- */
.example { display:grid; grid-template-columns:1fr 1fr; gap:18px; align-items:start; }
.ex-card { background:linear-gradient(180deg,var(--panel),var(--panel-2)); border:1px solid var(--line); border-radius:14px; padding:22px 22px; }
.ex-lbl { font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase; color:var(--accent); margin:0 0 8px; }
.ex-quote { margin:0; color:var(--ink); font-style:italic; }
.ex-note { color:var(--muted); font-size:14px; margin-top:18px; }

/* ---------- research/replication status list ---------- */
.statuslist { list-style:none; padding:0; margin:0; max-width:760px; }
.statuslist li { position:relative; padding:11px 0 11px 30px; border-bottom:1px solid var(--line); color:var(--ink-dim); font-size:15.5px; }
.statuslist li:last-child { border-bottom:none; }
.statuslist li::before { position:absolute; left:2px; top:11px; font-family:var(--mono); font-size:14px; }
.statuslist li.done::before { content:"\2713"; color:var(--accent); }
.statuslist li.todo::before { content:"\25CB"; color:var(--muted); }
.statuslist li.todo { color:var(--muted); }

/* ---------- W4: author · claim box · timeline · citation · replication · FAQ ---------- */
.authorcard {
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line); border-radius:14px; padding:26px 26px; max-width:760px;
}
.authorcard .who { font-family:var(--mono); font-size:12px; letter-spacing:.18em; text-transform:uppercase; color:var(--accent); margin:0 0 12px; }
.authorcard p { margin:0; }

/* prominent claim-boundary box (more visible than .callout) */
.claimbox {
  border:1px solid var(--accent-deep); border-left:4px solid var(--accent);
  background:linear-gradient(180deg, rgba(140,230,168,.10), rgba(140,230,168,.035));
  border-radius:12px; padding:24px 26px; max-width:820px;
  box-shadow:0 24px 64px -44px rgba(0,0,0,.85);
}
.claimbox .lbl { font-family:var(--mono); font-size:11px; letter-spacing:.2em; text-transform:uppercase; color:var(--accent); margin:0 0 10px; display:block; }
.claimbox p { margin:0; color:#fcfbf5; font-size:1.06rem; }

/* research timeline */
.timeline { list-style:none; padding:0; margin:0; max-width:760px; }
.timeline .yr { font-family:var(--mono); font-size:13px; letter-spacing:.16em; color:var(--accent); margin:0 0 14px; }
.timeline li { position:relative; padding:0 0 24px 28px; border-left:1px solid var(--line-2); margin-left:6px; }
.timeline li:last-child { padding-bottom:0; border-left-color:transparent; }
.timeline li::before { content:""; position:absolute; left:-5px; top:6px; width:9px; height:9px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 4px var(--accent-ghost); }
.timeline .t-date { font-family:var(--mono); font-size:12px; color:var(--muted); letter-spacing:.06em; }
.timeline .t-body { color:var(--ink-dim); margin:2px 0 0; }

/* citation block (selectable, copy-paste) */
.cite { background:#0a0c0f; border:1px solid var(--line-2); border-radius:10px; padding:16px 18px; font-family:var(--mono); font-size:12.5px; line-height:1.7; color:var(--ink-dim); white-space:pre-wrap; word-break:break-word; margin:0 0 16px; }

/* two-column available / not-available */
.repcols { display:grid; grid-template-columns:1fr 1fr; gap:18px; align-items:start; }
.repcols .card.no { border-left:3px solid var(--warn); }

/* FAQ — native <details>, no JavaScript */
.faq { max-width:820px; }
.faq-item { border:1px solid var(--line); border-radius:12px; background:var(--panel); margin-bottom:12px; padding:0 22px; }
.faq-item summary { cursor:pointer; list-style:none; padding:18px 0; font-family:var(--serif); font-size:1.15rem; color:#fcfbf5; display:flex; justify-content:space-between; align-items:center; gap:16px; }
.faq-item summary::-webkit-details-marker { display:none; }
.faq-item summary::after { content:"+"; font-family:var(--mono); color:var(--accent); font-size:1.3rem; flex:0 0 auto; }
.faq-item[open] summary::after { content:"\2013"; }
.faq-item .ans { padding:0 2px 20px; color:var(--ink-dim); }
.faq-item .ans p:last-child { margin-bottom:0; }

/* ---------- motion (CSS only — no JavaScript; all content renders without JS) ---------- */
@keyframes rise { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:none; } }
.hero .eyebrow, .hero h1, .hero .lead, .hero .cta-row, .hero .figure { animation:rise .8s var(--ease) both; }
.hero .eyebrow { animation-delay:.05s; }
.hero h1 { animation-delay:.12s; }
.hero .lead { animation-delay:.24s; }
.hero .cta-row { animation-delay:.36s; }
.hero .figure { animation-delay:.3s; }
.hero .path { animation:rise .6s var(--ease) both; }
.hero .path:nth-child(2){animation-delay:.5s}.hero .path:nth-child(3){animation-delay:.58s}
.hero .path:nth-child(4){animation-delay:.66s}.hero .path:nth-child(5){animation-delay:.74s}
.hero .path:nth-child(6){animation-delay:.82s}.hero .path:nth-child(7){animation-delay:.9s}
@media (prefers-reduced-motion:reduce) {
  *, .hero * { animation:none !important; transition:none !important; }
  html { scroll-behavior:auto; }
}

/* ---------- responsive ---------- */
@media (max-width:860px) {
  .hero .wrap { grid-template-columns:1fr; gap:36px; }
  .grid-2,.grid-3,.example,.repcols { grid-template-columns:1fr; }
  .nav { gap:18px; }
  .nav a:not(.active) { display:none; }
  body { font-size:16px; }
}