:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0f172a;
  color: #e2e8f0;
}

.card {
  padding: 2rem 2.5rem;
  border-radius: 12px;
  background: #1e293b;
  border: 1px solid #334155;
  text-align: center;
  max-width: 32rem;
}

h1 {
  margin-top: 0;
  font-size: 1.5rem;
}

code {
  background: #0f172a;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}