/* 仅作用于 callout，完全不影响原有样式 */
.callout {
  margin: 1em 0;
  padding: 0.8em 1em;
  border-radius: 6px;
  border-left: 4px solid #aaa;
  background: #fafafa;
}
.callout strong {
  display: block;
  margin-bottom: 0.4em;
  font-size: 1em;
}

/* 你要的 [!question] */
.callout-question {
  background: #e6f7ff;
  border-left-color: #1677ff;
  color: #1677ff;
}
.callout-note {
  background: #f0f5ff;
  border-left-color: #448aff;
  color: #448aff;
}
.callout-warning {
  background: #fffbe6;
  border-left-color: #fa8c16;
  color: #fa8c16;
}
.callout-danger {
  background: #fff1f0;
  border-left-color: #f53f3f;
  color: #f53f3f;
}
.callout-success {
  background: #f0fff9;
  border-left-color: #00b42a;
  color: #00b42a;
}