:root {
  color-scheme: light dark;
  --accent: #ef5a3c;
  --navy: #102544;
  --paper: #f7f8fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5f6878;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--text); line-height: 1.65; }
header { background: linear-gradient(135deg, var(--navy), #213f68); color: white; padding: 56px 24px; }
header div, main, footer { width: min(760px, calc(100% - 40px)); margin: auto; }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 6vw, 3rem); }
h2 { margin-top: 2rem; color: var(--navy); }
a { color: var(--accent); }
.links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.links a { color: white; border: 1px solid #ffffff66; border-radius: 999px; padding: 8px 14px; text-decoration: none; }
main { background: var(--card); margin-top: -24px; padding: 28px; border-radius: 22px; box-shadow: 0 14px 36px #10254418; }
footer { color: var(--muted); padding: 28px 0 48px; font-size: .9rem; }
.notice { border-left: 4px solid var(--accent); padding: 12px 16px; background: color-mix(in srgb, var(--accent) 9%, transparent); border-radius: 0 12px 12px 0; }
@media (prefers-color-scheme: dark) {
  :root { --paper: #0c1422; --card: #152033; --text: #f2f5fa; --muted: #b0bac9; --navy: #c7d9f7; }
  header { background: linear-gradient(135deg, #0b1c34, #1b385f); }
}