body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #f0f2f5;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  text-align: center;
}

.container {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 500px;
}

h1 {
  color: #333;
}

#remaining-count {
  color: #666;
  margin-bottom: 1rem;
}

.btn {
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.2rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#draw-button {
  background-color: #007bff;
}

#draw-button:hover {
  background-color: #0056b3;
}

#draw-button:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
}

#restart-button {
  background-color: #28a745; /* 绿色 */
  margin-left: 10px;
}

#restart-button:hover {
  background-color: #218838;
}

#card-result {
  margin-top: 2rem;
}

.card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1.5rem;
  background-color: #fafafa;
  text-align: left;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.card h2 {
  text-align: center;
  color: #007bff;
  margin-top: 0;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid #007bff;
  padding-bottom: 0.5rem;
}

.card ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.card li {
  background-color: #fff;
  border: 1px solid #eee;
  padding: 0.8rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}

.card li strong {
  color: #333;
}