:root {
  color-scheme: light dark;
  --fundo: #f7f8fb;
  --texto: #1f2937;
  --suave: #6b7280;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #111827;
    --texto: #f3f4f6;
    --suave: #9ca3af;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--fundo);
  color: var(--texto);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

main {
  max-width: 420px;
  padding: 32px 16px;
  text-align: center;
}

h1 {
  font-size: 22px;
  margin: 0 0 12px;
}

p {
  line-height: 1.5;
  margin: 0 0 8px;
}

.nota {
  color: var(--suave);
  font-size: 14px;
}