.about {
  overflow: hidden;
}
.about .about_1 {
  width: 120rem;
  margin: auto;
  margin-top: 6rem;
  background-color: #fff;
}
.about .about_1 img {
  width: 100%;
}
.about .about_1 .about_1_r {
  padding: 3rem;
  color: #666;
  text-indent: 3.45rem;
}
.about .about_1 .about_1_r .about_1_r_2 {
  line-height: 3rem;
}
.about .about_2 {
  width: 120rem;
  margin: auto;
  margin-top: 6rem;
  overflow: hidden;
}
.about .about_2 .about_2_l {
  width: 45rem;
  height: 40rem;
  float: left;
}
.about .about_2 .about_2_r {
  width: 75rem;
  height: 40rem;
  float: left;
  padding-left: 4rem;
}
.about .about_2 .about_2_r .about_2_r_1 {
  margin-top: 3rem;
}
.about .about_2 .about_2_r .about_2_r_2 {
  margin-top: 2rem;
}
.about .about_3 {
  width: 120rem;
  margin: auto;
  height: 34rem;
  margin-top: 9rem;
  margin-bottom: 9rem;
  background: url(../image/about/about_4.png) no-repeat;
  background-size: 100% 100%;
}
.about .about_3 .about_3_l {
  float: left;
  width: 50%;
  height: 100%;
  background: rgba(34, 77, 160, 0.9);
}
.about .about_3 .about_3_l .about_3_l_1 {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding-left: 6rem;
}
.about .about_3 .about_3_l .about_3_l_1 .font_size_27 {
  color: #fff;
  margin-bottom: 2rem;
  margin-top: 4.8rem;
}
.about .about_3 .about_3_l .about_3_l_1 .font_size_16 {
  line-height: 3.4rem;
}
.about .about_3 .about_3_l .about_3_l_1 .font_size_23 {
  color: #fff;
  margin-bottom: 2rem;
}
.about .about_3 .about_3_2 {
  float: right;
  width: 50%;
  height: 100%;
  background: rgba(255, 255, 255, 0.9);
}
.about .about_3 .about_3_2 .about_3_2_1 {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding-left: 6rem;
}
.about .about_3 .about_3_2 .about_3_2_1 .aboutTitle {
  color: #333333;
  margin-top: 4.8rem;
  margin-bottom: 2rem;
}
.about .about_3 .about_3_2 .about_3_2_1 .font_size_16 {
  color: #666666;
  line-height: 3.4rem;
}
.about .about_4 {
  width: 120rem;
  margin: 0 auto;
}
.about .about_4 h4 {
  font-size: 2.7rem;
  font-weight: bold;
  color: #333333;
  text-align: center;
  margin-bottom: 4.5rem;
}
.about .about_4 .flex {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.about .about_4 .flex .item {
  width: 28.3rem;
  text-align: center;
}
.about .about_4 .flex .item .imgbox {
  box-sizing: border-box;
  height: 22.5rem;
  padding: 3.4rem 3.2rem;
  margin-bottom: 2.3rem;
  background: #fff;
}
.about .about_4 .flex .item .imgbox div {
  width: 100%;
  height: 100%;
}
.about .about_4 .flex .item .imgbox div img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.about .about_4 .flex .item .tit {
  font-size: 1.8rem;
  color: #666666;
  margin-bottom: 3.8rem;
}