:root {
  color-scheme: light;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
}
body {
  margin: 0;
  padding: 0;
  background: #f5f5f7;
  color: #111827;
}
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
article {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
  padding: 3rem 3rem 2.5rem;
}
@media (max-width: 640px) {
  article {
    padding: 2rem 1.5rem;
  }
}
h1 {
  text-align: center;
  font-size: 1.75rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
}
pre {
  white-space: pre-wrap;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1rem;
}
a {
  color: #2563eb;
}