:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, Arial, sans-serif;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0f172a;
  color: #e2e8f0;
}

.card {
  text-align: center;
  padding: 2rem;
  border: 1px solid #334155;
  border-radius: 16px;
  background: #111827;
  max-width: 560px;
  width: calc(100% - 2rem);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.8rem;
}

p {
  margin: 0.25rem 0;
  color: #94a3b8;
}