.mui-control-item.mui-active {
  font-weight: bold;
  color: #E42417 !important;
}

.mui-segmented-control .mui-control-item {
  position: relative;
  padding-bottom: 4px;
  /* 让下面有一点空间给横线 */
}

.mui-segmented-control .mui-control-item.mui-active::after {
  content: '';
  position: absolute;
  left: 10%;
  bottom: 0;
  width: 80%;
  /* 稍微缩短一点，看起来更细致 */
  height: 2px;
  background-color: #E42417;
  border-radius: 1px;
}