:root {
  color-scheme: dark;
  --navy: #0b1630;
  --blue: #1d3e7a;
  --cream: #fff6df;
  --gold: #ffcb57;
  --muted: #bcc8df;
  --line: rgba(255, 255, 255, 0.16);
}

* { box-sizing: border-box; }

html { background: var(--navy); }

body {
  margin: 0;
  color: var(--cream);
  background:
    radial-gradient(circle at 80% 0%, rgba(46, 88, 159, 0.65), transparent 34rem),
    var(--navy);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header, main, footer { width: min(760px, calc(100% - 40px)); margin-inline: auto; }

header { padding: 52px 0 28px; border-bottom: 1px solid var(--line); }

.brand { color: var(--gold); font-size: .82rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }

h1 { max-width: 15ch; margin: 10px 0 12px; font-size: clamp(2.25rem, 8vw, 4.4rem); line-height: 1; letter-spacing: -.045em; }

h2 { margin-top: 2.4rem; font-size: 1.3rem; line-height: 1.25; }

p, li { color: var(--muted); }

a { color: var(--gold); text-underline-offset: .18em; }

.summary { max-width: 60ch; font-size: 1.08rem; }

main { padding: 16px 0 48px; }

.notice { margin: 28px 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.055); }

ul { padding-left: 1.25rem; }

footer { display: flex; flex-wrap: wrap; gap: 12px 22px; padding: 24px 0 42px; border-top: 1px solid var(--line); font-size: .92rem; }

footer span { color: var(--muted); }

@media (max-width: 480px) {
  header, main, footer { width: min(100% - 28px, 760px); }
  header { padding-top: 36px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}