/* xad.ventures — the venture ledger
   Aesthetic: graphite ink on warm paper, one signal-amber accent, a structural
   "×" multiplier motif. Sans-serif body, monospaced labels/figures — precise,
   commercial, long-horizon. No JS; reveals are pure CSS, visible by default. */

:root{
  color-scheme: light dark;
  --paper:#f6f4ee;
  --panel:#efece4;
  --ink:#1b1a17;
  --muted:#6c6960;
  --faint:#94908596;
  --rule:#dcd8cd;
  --amber:#bf6a16;
  --amber-soft:#bf6a161a;
  --measure:38rem;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Menlo", "Consolas", monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#141312;
    --panel:#1c1a18;
    --ink:#efece4;
    --muted:#9c988e;
    --faint:#6f6b6080;
    --rule:#2c2925;
    --amber:#e89a4a;
    --amber-soft:#e89a4a1a;
  }
}

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  /* faint horizontal ledger ruling behind everything */
  background-image:linear-gradient(var(--rule) 1px, transparent 1px);
  background-size:100% 4.5rem;
  background-attachment:fixed;
}

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:100;
  background:var(--ink); color:var(--paper);
  padding:.6rem 1rem; font-family:var(--mono); font-size:.8rem;
  border-radius:0 0 .4rem 0;
}
.skip-link:focus{ left:0; }

a{ color:inherit; }
a:focus-visible, [tabindex]:focus-visible{
  outline:2px solid var(--amber); outline-offset:3px; border-radius:2px;
}

/* ---- shared shell ---- */
.masthead, main, .colophon{
  max-width:64rem;
  margin-inline:auto;
  padding-inline:max(1.5rem, env(safe-area-inset-left)) max(1.5rem, env(safe-area-inset-right));
}
@media (min-width:48rem){
  .masthead, main, .colophon{ padding-inline:3rem; }
}

/* ---- masthead ---- */
.masthead{
  display:flex; flex-wrap:wrap; align-items:baseline;
  justify-content:space-between; gap:.5rem 1.5rem;
  padding-top:max(1.6rem, env(safe-area-inset-top));
  padding-bottom:1.6rem;
  border-bottom:1px solid var(--rule);
}
.wordmark{
  margin:0; font-weight:680;
  font-size:clamp(1.5rem,5vw,2.1rem);
  letter-spacing:-0.02em; line-height:1;
}
.wordmark .dot{ color:var(--amber); }
.standing{
  margin:0; font-family:var(--mono);
  font-size:.68rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--muted);
}

/* ---- section scaffolding ---- */
main{ padding-block:0; }
main > section{
  padding-block:clamp(3rem,7vw,5.5rem);
  border-bottom:1px solid var(--rule);
}
.sec-head{
  display:flex; align-items:baseline; gap:1rem;
  margin-bottom:2rem;
}
.num{
  font-family:var(--mono); font-size:.85rem; font-weight:600;
  color:var(--amber);
  border:1px solid var(--rule); border-radius:.3rem;
  padding:.1rem .5rem; line-height:1.4;
}
.sec-head h2{
  margin:0; font-weight:640;
  font-size:clamp(1.35rem,3.4vw,1.85rem);
  letter-spacing:-0.015em; line-height:1.2;
}

/* ---- hero ---- */
.hero{ padding-top:clamp(2.5rem,6vw,4.5rem)!important; }
.kicker{
  margin:0 0 1.4rem; font-family:var(--mono);
  font-size:.74rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--amber);
}
.lede{
  margin:0; max-width:34rem;
  font-size:clamp(1.5rem,4.6vw,2.6rem);
  line-height:1.22; letter-spacing:-0.02em; font-weight:560;
}
.lede .amber{ color:var(--amber); }
.metaline{
  margin:1.8rem 0 0; font-family:var(--mono);
  font-size:.82rem; letter-spacing:.05em; color:var(--muted);
}
.metaline .x{ color:var(--amber); margin-inline:.15rem .3rem; }

/* ---- thesis prose ---- */
.prose{ max-width:var(--measure); }
.prose p{ margin:0 0 1.15rem; color:var(--ink); }
.prose p:last-child{ margin-bottom:0; }
.prose strong{ font-weight:640; }
.prose p:last-child{
  padding-left:1rem; border-left:2px solid var(--amber);
  color:var(--ink);
}

/* ---- modes grid ---- */
.grid{
  list-style:none; margin:0; padding:0;
  display:grid; gap:1px; background:var(--rule);
  border:1px solid var(--rule); border-radius:.5rem; overflow:hidden;
  grid-template-columns:1fr;
}
@media (min-width:46rem){ .grid{ grid-template-columns:repeat(3,1fr); } }
.card{
  background:var(--panel); padding:1.6rem 1.5rem 1.8rem;
  display:flex; flex-direction:column;
}
.card-tag{
  margin:0 0 1.4rem; font-family:var(--mono);
  font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--amber);
}
.card h3{
  margin:0 0 .7rem; font-size:1.12rem; font-weight:620;
  letter-spacing:-0.01em; line-height:1.25;
}
.card p:last-child{ margin:0; color:var(--muted); font-size:.95rem; }

/* ---- process steps ---- */
.steps{ list-style:none; margin:0; padding:0; max-width:46rem; }
.step{
  display:flex; gap:1.4rem; align-items:baseline;
  padding:1.4rem 0; border-top:1px solid var(--rule);
}
.step:first-child{ border-top:0; padding-top:0; }
.step-n{
  flex:0 0 auto; width:2.2rem;
  font-family:var(--mono); font-size:1rem; font-weight:600;
  color:var(--amber); text-transform:uppercase; letter-spacing:.05em;
}
.step h3{ margin:0 0 .35rem; font-size:1.08rem; font-weight:620; letter-spacing:-0.01em; }
.step p{ margin:0; color:var(--muted); font-size:.95rem; max-width:38rem; }

/* ---- audience ---- */
.audience-list{ margin:0; }
.audience-list > div{
  display:grid; gap:.2rem 2rem; padding:1.2rem 0;
  border-top:1px solid var(--rule);
  grid-template-columns:1fr;
}
.audience-list > div:first-child{ border-top:0; padding-top:0; }
@media (min-width:40rem){
  .audience-list > div{ grid-template-columns:12rem 1fr; align-items:baseline; }
}
.audience-list dt{
  font-family:var(--mono); font-size:.8rem; letter-spacing:.1em;
  text-transform:uppercase; color:var(--ink); font-weight:600;
}
.audience-list dd{ margin:0; color:var(--muted); }
.contact-line{
  margin:2.2rem 0 0; font-size:1.05rem;
}
.contact{
  font-family:var(--mono); font-size:.95rem; color:var(--amber);
  text-decoration:none; padding-bottom:.1rem;
  border-bottom:1px solid var(--amber-soft);
  transition:border-color .2s;
}
.contact:hover{ border-bottom-color:var(--amber); }

/* ---- footer ---- */
.colophon{
  padding-top:clamp(2.5rem,5vw,3.5rem);
  padding-bottom:max(2.5rem, env(safe-area-inset-bottom));
}
.foot-grid{
  display:grid; gap:2rem;
  grid-template-columns:1fr;
}
@media (min-width:44rem){
  .foot-grid{ grid-template-columns:1.4fr 1fr; gap:3rem; }
}
.foot-word{
  font-weight:680; font-size:1.25rem; letter-spacing:-0.02em;
}
.foot-word .dot{ color:var(--amber); }
.foot-brand p{ margin:.8rem 0 0; color:var(--muted); font-size:.9rem; max-width:26rem; }
.foot-h{
  margin:0 0 .9rem; font-family:var(--mono);
  font-size:.68rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--muted);
}
.foot-nav ul{ list-style:none; margin:0; padding:0; }
.foot-nav li{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:1rem; padding:.45rem 0; border-bottom:1px solid var(--rule);
  font-size:.9rem;
}
.foot-nav a{
  font-family:var(--mono); text-decoration:none; color:var(--ink);
  border-bottom:1px solid transparent;
}
.foot-nav a:hover{ border-bottom-color:var(--amber); color:var(--amber); }
.foot-nav span{ font-size:.72rem; color:var(--faint); letter-spacing:.04em; }
.foot-legal{
  display:flex; flex-wrap:wrap; align-items:center; gap:.4rem .9rem;
  margin:2.5rem 0 0; padding-top:1.2rem; border-top:1px solid var(--rule);
  font-family:var(--mono); font-size:.72rem; letter-spacing:.04em;
  color:var(--muted);
}
.foot-legal span[aria-hidden]{ color:var(--amber); }

/* ---- CSS-only scroll reveals (visible by default; enhanced where supported) ---- */
@supports (animation-timeline: view()){
  @media (prefers-reduced-motion: no-preference){
    .reveal{
      animation:rise both linear;
      animation-timeline:view();
      animation-range:entry 0% entry 36%;
    }
  }
}
@keyframes rise{
  from{ opacity:0; transform:translateY(14px); }
  to{ opacity:1; transform:none; }
}

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