:root {
  --ink: #11231d;
  --muted: #5f6f68;
  --paper: #f7f8f3;
  --card: #ffffff;
  --line: #dfe6df;
  --brand: #245c48;
  --accent: #ff7a45;
  --soft: #e8f1eb;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(223,230,223,.9); background: rgba(247,248,243,.92); backdrop-filter: blur(16px); }
.topbar-inner { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { text-decoration: none; font-weight: 900; letter-spacing: -.04em; font-size: 1.2rem; }
.nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 750; font-size: .9rem; }
.nav a:hover { color: var(--ink); }
.hero { padding: clamp(72px, 10vw, 130px) 0 68px; }
.founder-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 300px); gap: clamp(30px, 6vw, 76px); align-items: center; }
.founder-photo { width: 100%; aspect-ratio: 1; object-fit: cover; border: 1px solid var(--line); border-radius: 30px; box-shadow: 0 24px 70px rgba(33,65,52,.14); }
.demo-frame { overflow: hidden; border: 1px solid var(--line); border-radius: 30px; background: #0f1f19; box-shadow: 0 24px 70px rgba(33,65,52,.12); }
.demo-frame video { display: block; width: 100%; height: auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 20px; color: var(--brand); font-size: .78rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--accent); }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.045em; margin-top: 0; }
h1 { max-width: 940px; margin-bottom: 24px; font-size: clamp(2.7rem, 7vw, 6.4rem); }
h2 { margin-bottom: 20px; font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { margin-bottom: 12px; font-size: 1.35rem; }
.lead { max-width: 780px; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border: 1px solid var(--ink); border-radius: 999px; text-decoration: none; font-weight: 850; }
.button.primary { color: white; background: var(--ink); }
.button.secondary { background: white; }
.section { padding: 72px 0; border-top: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-head p, .muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); box-shadow: 0 12px 36px rgba(33,65,52,.055); }
.card p:last-child { margin-bottom: 0; }
.metric { font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1; letter-spacing: -.06em; font-weight: 950; }
.metric-label { margin-top: 10px; color: var(--muted); font-weight: 720; }
.tag { display: inline-flex; padding: 6px 10px; border-radius: 999px; color: var(--brand); background: var(--soft); font-size: .78rem; font-weight: 850; }
.proof-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.proof { overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: white; }
.device { height: 610px; overflow: hidden; background: #edf0ec; }
.device img { display: block; width: 100%; height: auto; }
.proof figcaption { padding: 18px; color: var(--muted); font-size: .9rem; }
.proof strong { display: block; margin-bottom: 5px; color: var(--ink); }
.turn-evidence { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.turn-evidence .device { height: 620px; display: flex; align-items: flex-start; justify-content: center; padding: 12px; }
.turn-evidence .device img { width: 100%; height: 100%; object-fit: contain; object-position: top center; }
.turn-request { display: block; margin: 8px 0 6px; color: var(--ink); font-weight: 800; line-height: 1.45; }
.turn-result { display: block; line-height: 1.55; }
.timeline { display: grid; gap: 0; }
.timeline-row { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 22px 0; border-top: 1px solid var(--line); }
.timeline-row:first-child { border-top: 0; }
.timeline-row dt { font-weight: 900; color: var(--brand); }
.timeline-row dd { margin: 0; }
.quote { padding: 34px; border-left: 4px solid var(--accent); background: white; font-size: clamp(1.3rem, 3vw, 2.1rem); font-weight: 800; letter-spacing: -.025em; }
.cta { padding: 42px; border-radius: 30px; color: white; background: var(--ink); }
.cta p { max-width: 720px; color: #cfddd6; }
.cta .button { border-color: white; color: var(--ink); background: white; }
.fine { color: var(--muted); font-size: .82rem; }
footer { padding: 36px 0 54px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
@media (max-width: 900px) {
  .grid, .grid.two, .proof-grid { grid-template-columns: 1fr 1fr; }
  .device { height: 560px; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1120px); }
  .topbar-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .nav { gap: 12px; }
  .hero { padding-top: 64px; }
  .founder-hero { grid-template-columns: 1fr; }
  .founder-photo { width: min(72vw, 280px); }
  .grid, .grid.two, .proof-grid { grid-template-columns: 1fr; }
  .device { height: 600px; }
  .turn-evidence .device { height: 520px; }
  .timeline-row { grid-template-columns: 1fr; gap: 6px; }
  .card, .cta { padding: 24px; border-radius: 20px; }
}