:root {
  color-scheme: dark;
  --bg: #0c0b08;
  --card: #171510;
  --card-2: #211f18;
  --text: #f7f0df;
  --muted: #c8bea6;
  --line: #3d382b;
  --gold: #f3c969;
  --gold-2: #ffe3a1;
  --ink: #17120a;
  --red: #ff7b6b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(243,201,105,.18), transparent 34rem),
    linear-gradient(180deg, #0c0b08 0%, #11100c 45%, #0c0b08 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  background: rgba(12,11,8,.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(243,201,105,.18);
}
.brand {
  font-weight: 900;
  letter-spacing: -.04em;
  text-decoration: none;
  font-size: 1.35rem;
}
nav { display: flex; align-items: center; gap: 1rem; font-size: .95rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }
.nav-cta { color: var(--gold); }

main { overflow: hidden; }
section {
  padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 4vw, 4rem);
  max-width: 1180px;
  margin: 0 auto;
}
.hero {
  min-height: 76vh;
  display: grid;
  align-content: center;
  text-align: left;
}
.eyebrow, .section-kicker {
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .78rem;
  font-weight: 800;
  margin: 0 0 1rem;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 920px;
  font-size: clamp(3.5rem, 9vw, 7.8rem);
  line-height: .9;
  letter-spacing: -.08em;
  margin-bottom: 1.5rem;
}
h2 {
  max-width: 860px;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: .96;
  letter-spacing: -.055em;
  margin-bottom: 1.2rem;
}
h3 { font-size: 1.18rem; margin-bottom: .55rem; }
.hero-copy {
  max-width: 760px;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  color: var(--muted);
}
.hero-actions, .split-list, .fit-grid {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  border-radius: 999px;
  min-height: 3.1rem;
  padding: .9rem 1.25rem;
  font-weight: 850;
  border: 1px solid var(--line);
}
.button.primary { background: var(--gold); color: var(--ink); border-color: var(--gold); }
.button.secondary { color: var(--text); background: rgba(255,255,255,.04); }
.button.large { min-height: 3.4rem; padding-inline: 1.6rem; margin-top: .75rem; }
.under-cta { margin-top: .9rem; color: #9e9278; font-size: .95rem; }

.problem { border-top: 1px solid var(--line); }
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.cards article, .timeline article, .fit-grid > div, .proof, .apply, .solution {
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: clamp(1.2rem, 2.2vw, 2rem);
  box-shadow: 0 24px 80px rgba(0,0,0,.24);
}
.cards p, .solution p, .fit li, .timeline p, .proof p, .apply p, footer {
  color: var(--muted);
}
.solution, .proof, .apply { max-width: 960px; }
.split-list { margin: 1.2rem 0; }
.split-list ul, .fit ul {
  flex: 1;
  min-width: 260px;
  margin: 0;
  padding-left: 1.2rem;
}
li { margin-bottom: .5rem; }
.plain-note {
  padding: 1rem;
  border-left: 4px solid var(--gold);
  background: rgba(243,201,105,.08);
  border-radius: 16px;
}
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.timeline span {
  color: var(--gold);
  font-weight: 900;
  font-size: .85rem;
  display: block;
  margin-bottom: .8rem;
}
.fit-grid { margin-top: 1.6rem; }
.fit-grid > div { flex: 1; min-width: 280px; }
.fit-grid h3 { color: var(--gold-2); }
.boundary {
  border: 1px dashed rgba(243,201,105,.5);
  padding: 1rem;
  border-radius: 18px;
  background: rgba(243,201,105,.06);
}
footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1rem, 4vw, 4rem);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-small { max-width: 480px; }

@media (max-width: 860px) {
  nav a:not(.nav-cta) { display: none; }
  .cards, .timeline { grid-template-columns: 1fr; }
  h1 { font-size: clamp(3rem, 18vw, 5.4rem); }
  section { padding-block: 4rem; }
}