:root {
  color-scheme: light dark;
  --paper: #fff9ea;
  --ink: #111111;
  --brand: #ff4f91;
  --yellow: #ffd83d;
  --blue: #4b8cff;
  --mint: #71e4b3;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
header, main, footer { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
header { padding: 36px 0 18px; }
.brand {
  display: inline-block;
  padding: 8px 14px;
  border: 4px solid var(--ink);
  background: var(--yellow);
  font-size: 24px;
  font-weight: 900;
}
h1 { font-size: clamp(34px, 7vw, 66px); line-height: 1.05; margin: 36px 0 16px; }
h2 { margin-top: 36px; font-size: 24px; }
.lead { font-size: 20px; font-weight: 700; max-width: 760px; }
.card {
  margin: 20px 0;
  padding: 22px;
  border: 4px solid var(--ink);
  background: #ffffff;
  box-shadow: 8px 8px 0 var(--ink);
}
.accent { background: var(--brand); }
.blue { background: var(--blue); color: #fff; }
.mint { background: var(--mint); }
a { color: inherit; font-weight: 800; text-underline-offset: 4px; }
nav { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 18px; }
nav a { padding: 6px 10px; border: 2px solid var(--ink); background: #fff; text-decoration: none; }
ul { padding-left: 22px; }
footer { padding: 44px 0 64px; font-size: 14px; }
.meta { color: #555; font-size: 14px; }
@media (prefers-color-scheme: dark) {
  :root { --paper: #171717; --ink: #f5f5f5; }
  .card, nav a { background: #242424; }
  .meta { color: #bbb; }
  .accent, .mint, .brand { color: #111; border-color: #f5f5f5; box-shadow-color: #f5f5f5; }
}