details {
  background: #f5f5f5;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 10px;
  margin: 5px 0;
  font-family: 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  color: #333;
}
summary {
  font-weight: bold;
  color: #2c3e50;
  cursor: pointer;
  outline: none;
}
details p {
  margin: 4px 0;
}