:root {
  color-scheme: dark;
  --bg: #000000;
  --fg: #ffffff;
  --muted: #9a9a9a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
}

.shell {
  max-width: 32rem;
  margin: 0 auto;
  padding: 3rem 1rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.muted {
  margin: 0.25rem 0;
  color: var(--muted);
}