:root {
  color-scheme: light;
  --bg: #0b1020;
  --card: #111a33;
  --text: #e8ecff;
  --muted: #b8c1ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1000px 700px at 30% 20%, #1c2a66 0%, var(--bg) 55%);
  color: var(--text);
  display: grid;
  place-items: center;
}

.container {
  width: min(720px, 92vw);
  padding: 32px 28px;
  background: color-mix(in srgb, var(--card) 92%, black);
  border: 1px solid color-mix(in srgb, var(--muted) 22%, transparent);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
}

p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}