:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --fg: #1d1f21;
  --muted: #5f6368;
  --accent: #2f6fdd;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #e8eaed;
    --muted: #9aa0a6;
    --accent: #7aa7f5;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--fg);
  font:
    17px/1.55 system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    sans-serif;
}

main {
  max-width: 34rem;
  text-align: center;
}

.mark {
  display: block;
  margin: 0 auto 16px;
}

h1 {
  margin: 0 0 12px;
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  color: var(--accent);
}

p {
  margin: 0 0 12px;
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}