:root {
  color-scheme: light dark;
  --bg: #0a1220;
  --surface: #111d2e;
  --ink: #eef4ff;
  --muted: #a7b7ce;
  --line: #263852;
  --accent: #73a7ff;
  --accent-soft: #19345c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 80% 0%, #19345c 0, var(--bg) 36rem);
  color: var(--ink);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
.site-header, main, footer { width: min(100% - 32px, 960px); margin-inline: auto; }
.site-header { display: flex; justify-content: space-between; gap: 24px; padding: 28px 0; }
.brand { color: var(--ink); font-weight: 750; text-decoration: none; letter-spacing: .02em; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
nav a { text-decoration: none; }
main { padding: 56px 0 72px; }
.kicker { color: var(--accent); font-size: .78rem; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 760px; margin: 12px 0 18px; font-size: clamp(2.25rem, 6vw, 4.8rem); line-height: 1.03; letter-spacing: -.04em; }
.lede { max-width: 720px; color: var(--muted); font-size: 1.2rem; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 42px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: color-mix(in srgb, var(--surface) 90%, transparent); }
h2 { margin-top: 0; line-height: 1.2; }
.button { display: inline-block; margin-top: 30px; padding: 12px 18px; border-radius: 999px; background: var(--accent); color: #08101c; font-weight: 750; text-decoration: none; }
.note { margin-top: 36px; color: var(--muted); font-size: .92rem; }
footer { padding: 24px 0 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
@media (max-width: 640px) { .site-header { align-items: flex-start; flex-direction: column; } .grid { grid-template-columns: 1fr; } main { padding-top: 30px; } }