body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0b0d12;
  color: #eaeaea;
}

header {
  padding: 2rem;
  background: #11152a;
  text-align: center;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 2rem;
}

section {
  margin-bottom: 2rem;
}

footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #aaa;
}

pre {
  background: #1b1f3a;
  padding: 1rem;
  border-radius: 6px;
}