.teaching-research-content {
  font-family: 'Source Han Sans CN', sans-serif;
}
.teaching-research-content .img {
  display: block;
  max-width: 100%;
  margin: 31px auto 16px;
}
.teaching-research-content .img-name {
  font-weight: 400;
  font-size: 12px;
  color: #333333;
  margin-bottom: 108px;
  text-align: center;
}
.teaching-research-content .subtitle {
  font-weight: bold;
  font-size: 24px;
  color: #333333;
  line-height: 37px;
  padding-left: 15px;
  position: relative;
  margin: 35px 0 50px;
}
.teaching-research-content .subtitle::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: #08e;
  border-radius: 1.5px;
}
.teaching-research-content .digital-text {
  margin-top: 31px;
}
.teaching-research-content .multi-img {
  display: flex;
  margin-bottom: 44px;
  margin-top: 30px;
}
.teaching-research-content .multi-img .item {
  margin-right: 9px;
}
.teaching-research-content .multi-img .item:last-child {
  margin-right: 0;
}
.teaching-research-content .multi-img .item img {
  margin: 0 auto 6px;
}
.outline-content {
  width: 940px;
  height: 602px;
  background: url('https://qcjy-portal.oss-cn-beijing.aliyuncs.com/manageFiles/1737430239978eGoIrs.jpg') no-repeat 0 0;
  background-size: 100% 100%;
  padding: 39px 10px;
  display: flex;
}
.outline-content .item {
  flex: 1;
  flex-shrink: 0;
  padding: 0 35px;
  padding-top: 76px;
  color: #FFFFFF;
  font-family: 'Source Han Sans CN', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s linear;
  cursor: pointer;
  position: relative;
}
.outline-content .item.active,
.outline-content .item:hover {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 23px;
  padding-top: 24px;
  color: #333;
}
.outline-content .item.active img:nth-child(1),
.outline-content .item:hover img:nth-child(1) {
  display: none;
}
.outline-content .item.active img:nth-child(2),
.outline-content .item:hover img:nth-child(2) {
  display: block;
}
.outline-content .item.active::after,
.outline-content .item:hover::after {
  content: '查看更多 >';
  color: #08e;
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  font-weight: 400;
  font-size: 14px;
}
.outline-content .item img {
  display: block;
  margin: 0 auto 15px;
  width: 53px;
  height: 53px;
}
.outline-content .item img:nth-child(2) {
  display: none;
}
.outline-content .item .title {
  font-weight: bold;
  font-size: 30px;
  margin-bottom: 20px;
}
.outline-content .item .desc {
  font-weight: 400;
  font-size: 14px;
  line-height: 21px;
  text-align: justify;
}