body {
  font-family: system-ui, sans-serif;
  max-width: 800px;
  margin: 3rem auto;
  padding: 0 1rem;
  line-height: 1.6;
  background: #0f172a;
  color: #e2e8f0;
}

h1 {
  color: #67e8f9;
}

.card {
  background: #111827;
  border: 1px solid #334155;
  border-radius: 14px;
  padding: 1.5rem;
}

a {
  color: #67e8f9;
}