:root {
  color-scheme: light;
  --ink: #102b58;
  --navy: #061f4a;
  --cream: #fff8e9;
  --paper: #fffcf4;
  --coral: #f45f4b;
  --sun: #f5b51b;
  --ocean: #19adbe;
  --green: #26864e;
  --muted: #536174;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: #086c84; }

.site-header {
  background: var(--navy);
  color: white;
}

.nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1080px;
  padding: 16px 24px;
}

.brand {
  color: white;
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.nav-links { display: flex; gap: 20px; }
.nav-links a { color: #dbe7ff; text-decoration: none; }

main {
  margin: 0 auto;
  max-width: 800px;
  padding: 56px 24px 80px;
}

.hero {
  align-items: center;
  display: grid;
  gap: 42px;
  grid-template-columns: 180px 1fr;
  max-width: 1000px;
}

.app-icon {
  border-radius: 42px;
  box-shadow: 0 18px 46px rgba(6, 31, 74, .22);
  display: block;
  height: auto;
  width: 100%;
}

.eyebrow {
  color: var(--coral);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(42px, 8vw, 68px);
  letter-spacing: -.045em;
  line-height: 1;
  margin: 8px 0 18px;
}

h2 { margin-top: 42px; }

.lead {
  color: var(--muted);
  font-size: 20px;
  max-width: 650px;
}

.button {
  background: var(--coral);
  border-radius: 14px;
  color: white;
  display: inline-block;
  font-weight: 800;
  margin-top: 12px;
  padding: 12px 18px;
  text-decoration: none;
}

.feature-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 48px;
}

.card {
  background: var(--paper);
  border: 1px solid rgba(16, 43, 88, .12);
  border-radius: 20px;
  padding: 22px;
}

.card h2, .card h3 { margin: 0 0 8px; }
.card p { margin: 0; }

.document h1 { font-size: clamp(36px, 7vw, 52px); }
.document .updated { color: var(--muted); }
.document li { margin: 8px 0; }

footer {
  border-top: 1px solid rgba(16, 43, 88, .12);
  color: var(--muted);
  margin: 0 auto;
  max-width: 1080px;
  padding: 24px;
}

@media (max-width: 640px) {
  .hero { grid-template-columns: 100px 1fr; gap: 22px; }
  .app-icon { border-radius: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 12px; font-size: 14px; }
}