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

body {
  font-family: system-ui, sans-serif;
  background: #f8fafc;
  color: #0f172a;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

h1 {
  margin-bottom: 0.5rem;
}

.card {
  margin: 2rem 0;
  padding: 3rem 1.5rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
  font-size: 1.5rem;
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}