:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  padding: 1.5rem;
}

.card {
  max-width: 32rem;
  text-align: center;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 1rem;
  padding: 3rem 2.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #f8fafc;
}

p {
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.meta {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #94a3b8;
}

code {
  background: #334155;
  padding: 0.15rem 0.4rem;
  border-radius: 0.3rem;
  font-size: 0.85em;
}