:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #fafaf8;
  --accent: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e6;
    --bg: #14141a;
    --accent: #7aa2ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100svh;
  display: grid;
  place-items: center;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

main {
  max-width: 36rem;
  padding: 2rem;
  text-align: center;
}

h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

a {
  color: var(--accent);
}