:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #111418;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-align: center;
  padding: 1.5rem;
}

h1 {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}