.main-introduction{
  width: calc(100% - 18vw);
  margin: 0 auto;
  font-size: 10px;
  color: #3F3F3F;
  line-height: 21px;
  letter-spacing: 1px;
  white-space: pre-wrap;
}
.main-culture-wrap{
  width: calc(100% - 18vw);
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  margin-bottom: 83px;
}
.main-culture-item{
  display: flex;
  flex-direction: column;
  align-items: center;
}
.main-culture-pic{
  width: 80px;
  height: 80px;
  margin-bottom: 8px;
}
.main-culture-title{
  font-size: 14px;
  font-weight: 500;
  line-height: 19px;
  padding-bottom: 14px;
  text-align: center;
}
.main-culture-title-color1{
  color: #60BAAA;
}
.main-culture-title-color2{
  color: #43CBB5;
}
.main-culture-title-color3{
  color: #66C6EB;
}
.main-culture-subtitle{
  font-size: 10px;
  color: #3F3F3F;
  line-height: 14px;
  text-align: center;
}
@media screen and (max-width: 900px) {
  .main-introduction{
    width: calc(100% - 0.24rem);
    font-size: 0.14rem;
    line-height: 0.23rem;
  }
  .main-culture-wrap{
    width: calc(100% - 0.24rem);
    margin-bottom: 0.6rem;
  }
  .main-culture-pic{
    width: 0.69rem;
    height: 0.68rem;
    margin-bottom: 0.11rem;
  }
  .main-culture-title{
    font-size: 0.14rem;
    line-height: 0.2rem;
    padding-bottom: 0.12rem;
  }
  .main-culture-subtitle{
    width: 0.8rem;
    font-size: 0.11rem;
    line-height: 0.16rem;
  }
}