.column {
  margin-bottom: 60px;
}
.column:last-child {
  margin-bottom: 0px;
}
.column .main {
  position: relative;
}
.column .top {
  display: flex;
  flex-direction: row-reverse;
  position: relative;
  z-index: 3;
}
.column .top .left {
  width: 30%;
  position: relative;
}
.column .top .left::after, .column .top .left::before {
  display: block;
  content: "";
  position: absolute;
}
.column .top .left::after {
  width: 30px;
  height: 30px;
  left: calc(100% + 20px);
  bottom: 60px;
  background: #c4daec;
}
.column .top .left::before {
  width: 15px;
  height: 15px;
  right: calc(100% + 20px);
  top: 0px;
  background: #297d79;
}
.column .top .left .about-img img {
  display: block;
  width: 100%;
}
.column .top .right {
  width: 70%;
  padding-right: 60px;
  padding-top: 60px;
}
.column .top .right .text {
  font-size: 18px;
  color: #333333;
  line-height: 35px;
  overflow: hidden;
}
.column .bottom {
  padding-top: 40px;
}
.column .bottom a {
  display: block;
  position: relative;
  align-items: center;
  justify-content: center;
}
.column .bottom a img {
  display: block;
  border-radius: 10px;
  object-fit: cover;
  z-index: 1;
  max-width: none;
  width: 100%;
}
.column .bottom a span {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 30px;
  color: #fff;
  font-weight: bold;
  z-index: 5;
}
.column.about-bg .main {
  background: url(../images/about-bg.png) no-repeat right 100px;
  background-size: auto;
}
.column.about-bg .title {
  font-size: 70px;
  color: #297d79;
  font-family: "BiaoTi";
  margin-bottom: 60px;
}
.column.about-bg .about-dl {
  display: flex;
  margin: 0px -10px;
}
.column.about-bg .about-dl dd {
  width: 50%;
}
.column.about-bg .about-dl dd .img-box {
  margin: 0px 10px;
  border-radius: 10px;
}
.column.about-bg .about-dl dd .img-box::after {
  padding-top: 60%;
}
.column.about-bg .about-dl dd:nth-child(2) {
  margin-top: 100px;
}

@media screen and (max-width: 768px) {
  .row {
    padding: 30px 0px 0px 0px;
  }
  .row .column {
    margin-bottom: 25px;
  }
  .row .column:last-child {
    margin-bottom: 0px;
  }
  .row .column .top {
    display: block;
  }
  .row .column .top .left {
    width: 100%;
  }
  .row .column .top .right {
    width: 100%;
    padding-right: 0px;
    padding-top: 15px;
  }
  .row .column .bottom {
    padding-top: 20px;
  }
  .row .column .bottom a {
    overflow: hidden;
    border-radius: 10px;
  }
  .row .column .bottom a img {
    width: auto;
    height: 150px;
  }
  .row .column .bottom a span {
    display: block;
    white-space: nowrap;
    font-size: 20px;
  }
  .row .column.about-bg .title {
    font-size: 30px;
    text-align: center;
    margin-bottom: 15px;
  }
  .row .column.about-bg .about-dl {
    display: block;
  }
  .row .column.about-bg .about-dl dd {
    width: 100%;
  }
  .row .column.about-bg .about-dl dd:nth-child(2) {
    margin: 15px 0px;
  }
}