:root {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: #111;
  background: radial-gradient(circle at top, #fef6ff, #f5f7ff 55%, #eef2ff);
  min-height: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.card {
  width: min(420px, 100%);
  padding: 32px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0px 18px 60px rgba(15, 23, 42, 0.15);
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 42px);
}