* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: linear-gradient(135deg, #e0f2ff, #f5f7ff);
}

.card {
  background: white;
  width: 90%;
  max-width: 480px;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
}

h1 {
  margin-top: 0;
  color: #1e3a8a;
  font-size: 1.8rem;
}

p {
  color: #555;
  line-height: 1.6;
}

.main-button {
  margin-top: 32px;
  width: 100%;
  padding: 16px;
  font-size: 1.1rem;
  border: none;
  border-radius: 12px;
  background: #2563eb;
  color: white;
  cursor: pointer;
  transition: background 0.2s;
}

.main-button:hover {
  background: #1d4ed8;
}

.choices {
  margin-top: 24px;
  display: none;
}

.choices a {
  display: block;
  margin-top: 12px;
  padding: 14px;
  border-radius: 10px;
  background: #f1f5f9;
  color: #111;
  text-decoration: none;
  transition: background 0.2s;
}

.choices a:hover {
  background: #e2e8f0;
}

.note {
  margin-top: 24px;
  font-size: 0.9rem;
  color: #666;
}