.secret-content {
  background-color: hsl(3, 60%, 40%); /* #9a2d28 的 HSL 表示 */
  color: transparent;
  padding: 0 4px;
  margin: 0 2px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.25s ease;
  opacity: 0.8;
}

.secret-content:hover {
  background-color: transparent;
  color: var(--text-color);
  opacity: 1;
}

[data-theme="dark"] .secret-content {
  background-color: hsl(183, 60%, 40%); /* 色相旋转180度 */
}

.secret-content:hover {
  background-color: transparent;
  color: var(--text-color);
  opacity: 1;
}