body {
  font-family: system-ui, sans-serif;
  background: #0f1115;
  color: #eaeaea;
  margin: 0;
  padding: 0;
}

header {
  padding: 3rem;
  text-align: center;
  background: #151821;
}

main {
  padding: 2rem;
  display: grid;
  gap: 2rem;
}

section {
  background: #1c1f2b;
  padding: 2rem;
  border-radius: 12px;
}

button {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  cursor: pointer;
}