/* FutureNative Internal KB — brand tokens copied from docs/review/fn-review.css (canonical) */
:root{
  --bg:#e9e6dc; --ink:#1a1a1a; --muted:#5f5f5f; --dim:#9a9a9a;
  --rule:#d8d2c2; --accent:#002147; --burg:#7a1828;
  --panel:#efece4; --panel-line:#ddd7c8; --accent-tint:rgba(0,33,71,.06);
  --serif:'Fraunces',Georgia,serif;
  --sans:'Inter',-apple-system,system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;font-size:16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(233,230,220,.88);
  backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--rule)}
header .bar{display:flex;align-items:center;justify-content:space-between;gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:14px 28px}
.wordmark{font-family:var(--serif);font-weight:600;font-size:19px;letter-spacing:.01em}
.wordmark .f{color:var(--accent)}.wordmark .n{color:var(--burg)}
.wordmark .sub{font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--dim);margin-left:10px}
nav.top{display:flex;gap:22px;font-size:13.5px;font-weight:500}
nav.top a{color:var(--muted);border:none}
nav.top a:hover{color:var(--accent);text-decoration:none}
@media(max-width:680px){nav.top{display:none}.wordmark .sub{display:none}}

/* ---------- hero ---------- */
.hero{padding:78px 0 64px;border-bottom:1px solid var(--rule)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--burg);margin-bottom:20px}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(34px,5.4vw,58px);
  line-height:1.04;letter-spacing:-.02em;margin:0 0 22px;max-width:16ch}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero .lede{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:60ch;line-height:1.55}
.hero .lede strong{color:var(--accent);font-weight:600}
.hero .cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;font-weight:600;font-size:14.5px;padding:12px 22px;border-radius:6px;
  border:1px solid var(--accent);cursor:pointer;transition:.15s}
.btn.primary{background:var(--accent);color:#f4f1e8}
.btn.primary:hover{background:#012c5e;text-decoration:none}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.ghost:hover{background:var(--accent-tint);text-decoration:none}

/* ---------- sections ---------- */
section{padding:62px 0;border-bottom:1px solid var(--rule)}
.sec-label{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--burg);margin-bottom:14px}
h2.sec{font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.6vw,38px);
  letter-spacing:-.015em;margin:0 0 16px;line-height:1.1}
.sec-intro{font-size:17px;color:var(--muted);max-width:64ch;margin-bottom:38px}

/* ---------- the stack (clickable) ---------- */
.stack{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
@media(max-width:760px){.stack{grid-template-columns:1fr}}
.layers{display:flex;flex-direction:column;gap:10px}
.layer{text-align:left;background:var(--panel);border:1px solid var(--panel-line);
  border-radius:8px;padding:18px 20px;cursor:pointer;transition:.15s;font:inherit;color:inherit}
.layer:hover{border-color:var(--accent);transform:translateX(3px)}
.layer.active{border-color:var(--accent);background:#fff;box-shadow:0 2px 0 var(--accent)}
.layer .k{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.layer .t{font-family:var(--serif);font-size:20px;margin:4px 0 2px;color:var(--accent)}
.layer .s{font-size:14px;color:var(--muted)}
.layer.own{border-left:4px solid var(--burg)}
.detail{position:sticky;top:90px;background:#fff;border:1px solid var(--panel-line);border-radius:10px;
  padding:26px 28px;min-height:220px}
.detail .k{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--burg)}
.detail h3{font-family:var(--serif);font-weight:500;font-size:24px;margin:8px 0 12px;color:var(--accent)}
.detail p{font-size:15.5px;color:var(--ink);margin:0 0 10px;line-height:1.6}
.detail .tag{display:inline-block;font-size:12px;font-weight:600;color:var(--burg);
  background:rgba(122,24,40,.08);padding:3px 10px;border-radius:20px;margin-top:6px}

/* ---------- flywheel / steps ---------- */
.flow{display:flex;gap:14px;flex-wrap:wrap;counter-reset:step}
.step{flex:1 1 160px;background:var(--panel);border:1px solid var(--panel-line);border-radius:8px;padding:18px}
.step .n{font-family:var(--mono);font-size:12px;color:var(--burg);font-weight:600}
.step .t{font-family:var(--serif);font-size:18px;color:var(--accent);margin:6px 0 4px}
.step .s{font-size:13.5px;color:var(--muted)}

/* ---------- three-up cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:760px){.cards{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--panel-line);border-radius:10px;padding:24px}
.card h3{font-family:var(--serif);font-weight:500;font-size:21px;color:var(--accent);margin:0 0 8px}
.card p{font-size:14.5px;color:var(--muted);margin:0}
.card .num{font-family:var(--mono);font-size:12px;color:var(--burg);letter-spacing:.08em}

/* ---------- Q&A ---------- */
#qa{background:var(--panel);}
.qa-controls{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px;align-items:center}
#qa-search{flex:1 1 280px;font:inherit;font-size:15px;padding:12px 16px;border:1px solid var(--panel-line);
  border-radius:8px;background:#fff;color:var(--ink)}
#qa-search:focus{outline:none;border-color:var(--accent)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{font-size:12.5px;font-weight:500;padding:6px 13px;border-radius:20px;border:1px solid var(--panel-line);
  background:#fff;color:var(--muted);cursor:pointer;transition:.12s}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.on{background:var(--accent);color:#f4f1e8;border-color:var(--accent)}
.qa-count{font-size:13px;color:var(--dim);margin-bottom:14px}
.qa-group h3{font-family:var(--serif);font-weight:500;font-size:15px;text-transform:uppercase;
  letter-spacing:.06em;color:var(--burg);margin:26px 0 8px}
details.qa{background:#fff;border:1px solid var(--panel-line);border-radius:8px;margin:8px 0;overflow:hidden}
details.qa[open]{border-color:var(--accent)}
details.qa summary{list-style:none;cursor:pointer;padding:15px 18px;font-weight:600;font-size:15.5px;
  color:var(--accent);display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary::after{content:"+";font-family:var(--mono);color:var(--burg);font-weight:400;flex:none}
details.qa[open] summary::after{content:"–"}
.qa-body{padding:0 18px 18px}
.qa-short{font-size:14.5px;color:var(--ink);background:var(--accent-tint);border-left:3px solid var(--accent);
  padding:10px 14px;border-radius:0 4px 4px 0;margin:0 0 12px}
.qa-short b{color:var(--burg)}
.qa-full{font-size:14.5px;color:var(--muted);margin:0 0 10px;line-height:1.6}
.qa-src{font-family:var(--mono);font-size:11.5px;color:var(--dim)}
.qa-empty{color:var(--dim);font-style:italic;padding:20px 0}
mark{background:rgba(122,24,40,.18);color:inherit;border-radius:2px}

/* ---------- chat ---------- */
#ask .ask-box{background:#fff;border:1px solid var(--panel-line);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;max-height:560px}
.ask-log{flex:1;overflow:auto;padding:22px;display:flex;flex-direction:column;gap:16px;min-height:160px}
.msg{max-width:88%;font-size:15px;line-height:1.6}
.msg.u{align-self:flex-end;background:var(--accent);color:#f4f1e8;padding:10px 15px;border-radius:12px 12px 2px 12px}
.msg.a{align-self:flex-start;color:var(--ink)}
.msg.a .who{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--burg);margin-bottom:5px}
.msg.a .sources{margin-top:8px;font-family:var(--mono);font-size:11px;color:var(--dim)}
.ask-hint{color:var(--dim);font-size:14px}
.ask-hint .suggest{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.ask-hint .suggest button{font:inherit;font-size:13px;color:var(--accent);background:var(--accent-tint);
  border:1px solid var(--panel-line);border-radius:18px;padding:6px 13px;cursor:pointer}
.ask-hint .suggest button:hover{border-color:var(--accent)}
.ask-form{display:flex;gap:10px;border-top:1px solid var(--panel-line);padding:14px}
.ask-form input{flex:1;font:inherit;font-size:15px;padding:11px 14px;border:1px solid var(--panel-line);
  border-radius:8px;background:var(--bg)}
.ask-form input:focus{outline:none;border-color:var(--accent)}
.ask-form button{font:inherit;font-weight:600;font-size:14.5px;padding:0 20px;border-radius:8px;
  background:var(--accent);color:#f4f1e8;border:none;cursor:pointer}
.ask-form button:disabled{opacity:.5;cursor:default}
.typing{display:inline-flex;gap:4px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--burg);animation:b 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{opacity:.25}30%{opacity:1}}
.disclaimer{font-size:12px;color:var(--dim);margin-top:12px;font-style:italic}

/* ---------- floating assistant (FAB + modal) ---------- */
body.modal-open{overflow:hidden}

#ask-fab{position:fixed;right:22px;bottom:22px;z-index:80;display:inline-flex;align-items:center;gap:9px;
  font-family:var(--sans);font-weight:600;font-size:14.5px;color:#f4f1e8;background:var(--accent);
  border:1px solid var(--accent);border-radius:30px;padding:13px 20px;cursor:pointer;
  box-shadow:0 8px 24px rgba(0,33,71,.28);transition:transform .16s,box-shadow .16s,background .16s}
#ask-fab:hover{background:#012c5e;transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,33,71,.34)}
#ask-fab svg{color:#f4f1e8;flex:none}
@media(max-width:560px){#ask-fab .fab-label{display:none}#ask-fab{padding:15px;border-radius:50%}}

.ask-modal{position:fixed;inset:0;z-index:100;display:flex;align-items:flex-end;justify-content:flex-end}
.ask-modal[hidden]{display:none}
.ask-modal-backdrop{position:absolute;inset:0;background:rgba(26,26,26,.42);backdrop-filter:blur(2px)}
.ask-modal-card{position:relative;z-index:1;display:flex;flex-direction:column;
  width:min(440px,calc(100vw - 32px));height:min(620px,calc(100vh - 32px));margin:16px;
  background:#fff;border:1px solid var(--panel-line);border-radius:14px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,33,71,.32);animation:askpop .18s ease-out}
@keyframes askpop{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:none}}
.ask-modal-head{display:flex;align-items:center;justify-content:space-between;
  padding:13px 18px;border-bottom:1px solid var(--panel-line);background:var(--panel)}
.ask-modal-title{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);font-weight:600;display:flex;align-items:center;gap:8px}
.ask-modal-title .dot{width:8px;height:8px;border-radius:50%;background:var(--burg);
  box-shadow:0 0 0 3px rgba(122,24,40,.15)}
.ask-modal-x{font:inherit;font-size:15px;line-height:1;color:var(--muted);background:none;border:none;
  cursor:pointer;padding:6px 8px;border-radius:6px}
.ask-modal-x:hover{color:var(--burg);background:var(--accent-tint)}
.ask-modal-card .ask-log{flex:1;min-height:0}
.ask-modal-foot{font-size:11px;color:var(--dim);font-style:italic;text-align:center;
  padding:9px 14px 12px;margin:0;border-top:1px solid var(--panel-line)}
@media(max-width:560px){
  .ask-modal{align-items:stretch;justify-content:stretch}
  .ask-modal-card{width:100vw;height:100dvh;margin:0;border-radius:0}
}

/* ---------- footer ---------- */
footer.site{padding:40px 0 56px;color:var(--dim);font-size:12.5px;font-style:italic;line-height:1.6}

.confidential{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--burg);font-style:normal}