body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  margin: 0;
  padding: 0;
  background: #fafafa;
  color: #111;
}

main {
  max-width: 720px;
  margin: 20vh auto;
  padding: 0 20px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

p {
  font-size: 1.1rem;
  line-height: 1.5;
}

.subtle {
  color: #666;
  margin-top: 0.75rem;
}