:root {
  color-scheme: dark;
  --bg: #08111f;
  --panel: #101d30;
  --ink: #fff5df;
  --muted: #b8c4d8;
  --accent: #ff8064;
  --aqua: #67ddd1;
  --line: #28384f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(circle at 85% 8%, #17334c 0, var(--bg) 34rem);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main { width: min(1080px, calc(100% - 44px)); margin: auto; }
nav { display: flex; align-items: center; gap: 24px; min-height: 88px; border-bottom: 1px solid var(--line); }
nav a, .button { text-decoration: none; }
.brand { margin-right: auto; font-weight: 900; letter-spacing: 2px; }
a { color: inherit; text-underline-offset: 5px; }
a:hover { color: var(--aqua); }
a:focus-visible { outline: 3px solid var(--aqua); outline-offset: 6px; }
.hero { max-width: 760px; padding: 78px 0 84px; }
.eyebrow { color: var(--aqua); font-size: 13px; font-weight: 850; letter-spacing: 3px; text-transform: uppercase; }
h1 { margin: 24px 0 30px; font-size: clamp(55px, 9vw, 100px); line-height: .98; letter-spacing: -4px; }
h2 { margin-top: 42px; font-size: clamp(30px, 4vw, 44px); line-height: 1.15; letter-spacing: -1px; }
h3 { font-size: 21px; }
p, li { color: var(--muted); }
.lead { max-width: 650px; font-size: 21px; }
.button { display: inline-block; margin: 20px 12px 0 0; padding: 14px 22px; border-radius: 12px; background: var(--accent); color: var(--bg); font-weight: 850; }
.button.secondary { border: 1px solid var(--line); background: var(--panel); color: var(--ink); }
section { padding: 48px 0; border-top: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin: 32px 0; }
.card { padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: color-mix(in srgb, var(--panel) 88%, transparent); }
.card h3 { color: var(--aqua); }
.document { max-width: 790px; padding: 52px 0 70px; }
.document h1 { font-size: clamp(42px, 7vw, 62px); line-height: 1.05; letter-spacing: -2px; }
.document h2 { font-size: 27px; }
.callout { margin: 28px 0; padding: 22px 24px; border-left: 4px solid var(--aqua); border-radius: 8px; background: var(--panel); }
.route { padding: 2px 7px; border: 1px solid var(--line); border-radius: 6px; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
footer { display: flex; justify-content: space-between; gap: 18px; padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer div { display: flex; flex-wrap: wrap; gap: 18px; }

@media (max-width: 720px) {
  nav { gap: 15px; min-height: 76px; font-size: 14px; }
  .brand { font-size: 13px; letter-spacing: 1px; }
  .hero { padding: 52px 0 58px; }
  h1 { letter-spacing: -3px; }
  .cards { grid-template-columns: 1fr; }
  footer { flex-direction: column; }
}