.introduce {
  background-size: cover;
}
.introduce .top-box{
  padding-top: 1rem;
  background-color: #fff;
}
.introduce .top-box .title-tab {
  width: 24rem;
  margin: 0 auto;
}
.introduce .top-box .title-tab>.title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1rem;
  margin-bottom: 1rem;
  text-align: center;
}
.introduce .top-box .title-tab .tab_box {
  display: flex;
  justify-content: space-around;
}
.introduce .top-box .title-tab .product_tab_item {
  position: relative;
  vertical-align: top;
  display: inline-block;
  text-align: center;
  height: 1.2rem;
  cursor: pointer;
}
.introduce .top-box .title-tab .product_tab_item .product_num {
  display: inline-block;
  height: 1.2rem;
  width: 1.2rem;
  background-position: 50%;
  background-size: auto 100%;
  transition: background-image .5s;
}
.introduce .top-box .title-tab .product_tab_item .product_num.product_num_1 {
  background-image:url(../../image/01_nor.png);
}
.introduce .top-box .title-tab .product_tab_item:hover .product_num.product_num_1,
.introduce .top-box .title-tab .product_tab_item.product_active .product_num.product_num_1 {
  background-image:url(../../image/01_sel.png);
}
.introduce .top-box .title-tab .product_tab_item .product_num.product_num_2 {
  background-image:url(../../image/02_nor.png);
}
.introduce .top-box .title-tab .product_tab_item:hover .product_num.product_num_2,
.introduce .top-box .title-tab .product_tab_item.product_active .product_num.product_num_2 {
  background-image:url(../../image/02_sel.png);
}
.introduce .top-box .title-tab .product_tab_item .product_num.product_num_3 {
  background-image:url(../../image/03_nor.png);
}
.introduce .top-box .title-tab .product_tab_item:hover .product_num.product_num_3,
.introduce .top-box .title-tab .product_tab_item.product_active .product_num.product_num_3 {
  background-image:url(../../image/03_sel.png);
}
.introduce .top-box .title-tab .product_tab_item .product_num.product_num_4 {
  background-image:url(../../image/04_nor.png);
}
.introduce .top-box .title-tab .product_tab_item:hover .product_num.product_num_4,
.introduce .top-box .title-tab .product_tab_item.product_active .product_num.product_num_4 {
  background-image:url(../../image/04_sel.png);
}
.introduce .top-box .title-tab .product_tab_item span {
  display: inline-block;
  vertical-align: top;
  margin-left: 0.32rem;
  font-size: 0.44rem;
  color: #111f2c;
  letter-spacing: 0;
  line-height: 1.2rem;
  font-weight: 500;
  transition: color .5s;
}
.introduce .top-box .title-tab .product_tab_item:hover span {
  color: #06f;
}
.introduce .top-box .title-tab .product_tab_item.product_active span {
  color: #06f;
}
.introduce .top-box .title-tab .product_tab_item .product_barwrap {
  position: absolute;
  left: 0.1rem;
  bottom: -0.16rem;
  width: 100%;
}

.introduce .top-box .title-tab .product_tab_item .product_barwrap .product_bar {
  display: inline-block;
  height: 0.06rem;
  width: 0;
  transition: width .6s;
}
.introduce .top-box .title-tab .product_tab_item.product_active .product_barwrap .product_bar {
  width: 100%;
  background: #06f;
}

.introduce .top-box .title-tab .content_card {
  width: 24rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.introduce .top-box .title-tab .content_card .scenceItem {
  width: 7.5rem;
  height: 6.6rem;
  padding: 0.96rem 0.64rem;
  border-radius: 0.32rem;
  border: 0.02rem solid #f2f2f2;
  box-shadow: 0 0.2rem 0.6rem 0 rgba(176, 191, 231, .15);
  box-sizing: border-box;
}
.introduce .top-box .title-tab .content_card .scenceItem_2 {
  width: 11.25rem;
  height: 6rem;
}
.introduce .top-box .title-tab .content_card .scenceItem_3 {
  width: 100%;
  height: 4rem;
  padding: 0.48rem 0.64rem;
  display: flex;
  flex-wrap: wrap;
}
.introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content {
  width: 10.8rem;
}
.introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content_2 {
  width: 100%;
}
.introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content:nth-of-type(2n-1) {
  margin-right: 1rem;
}
.introduce .top-box .title-tab .content_card .scenceItem_4 {
  height: 6rem;
}
.introduce .top-box .title-tab .content_card .scenceItem img {
  height: auto;
  width: 1.7rem;
  position: relative;
  top: -0.34rem;
}
.introduce .top-box .title-tab .content_card .scenceItem .scenceItem_content .title {
  margin-top: -0.48rem;
  font-size: 0.48rem;
  line-height: 0.72rem;
  color: #1f2329;
  font-weight: 600;
  margin-bottom: 0.48rem;
  text-align: left;
}
.introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content .title {
  margin-top: 0;
}
.introduce .top-box .title-tab .content_card .scenceItem .scenceItem_content .desc {
  font-size: 0.32rem;
  line-height: 0.52rem;
  color: #646a73;
}

.QOb4IfS2mj {
  background: url(../../image/product_background.jpg) no-repeat center;
}
.QOb4IfS2mj .feature-wrapper {
  width: 24rem;
  margin: 0 auto;
  padding: 1rem 0;
}
.QOb4IfS2mj .feature-wrapper img {
  width: 100%;
  height: auto;
}

.swiper .title_wrap {
  position: absolute;
  top: 50%;
  left: 20%;
  transform: translateY(-50%);
  
}
.swiper .title_wrap .title {
  line-height: 1.56rem;
  font-size: 1.12rem;
  color: #fff;
  letter-spacing: 0;
  font-weight: 500;
  margin-bottom: 0.16rem;
}
.swiper .title_wrap .title .se_title {
  font-size: 0.35rem;
  margin-left: 0.25rem;
}
.swiper .title_wrap .desc {
  line-height: 0.5rem;
  font-size: 0.36rem;
  color: #fff;
  letter-spacing: 0;
  font-weight: 400;
  width: 17rem;
}

.swiper .title_wrap .desc_2 {
  font-size: 0.48rem;
  margin-bottom: 0.4rem;
}

.swiper .swiper-slide .mask {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.2);
  display: none;
}

@media (max-width: 980px) {
  .swiper .swiper-slide .mask {
    display: block;
  }
  .swiper .swiper-slide .contact_info_popup {
    display: none;
  }
  .swiper .swiper-slide .contact_info_popup_2 {
    display: block;
  }
  .swiper .swiper-slide .title_wrap {
    left: 10%;
    right: 10%;
  }
  .swiper .swiper-slide .title_wrap .title {
    display: flex;
    flex-direction: column;
  }
  .swiper .title_wrap .title {
    font-size: 0.7rem;
  }
  .swiper .title_wrap .title .se_title {
    margin: 0;
    line-height: 5vw;
  }
  .swiper .title_wrap .desc {
    font-size: 0.34rem;
    width: 100%;
  }
  .introduce .top-box {
    padding-top: 9.6vw;
  }
  .introduce .top-box .title-tab {
    width: 100%;
  }
  .introduce .top-box .title-tab>.title {
    font-size: 6.4vw;
    margin-bottom: 9.6vw;
    padding: 0 6vw;
  }

  .introduce .top-box .title-tab .content_card {
    width: 100%;
    flex-direction: column;
    align-items: center;
    margin-bottom: 9.6vw;
  }
  .introduce .top-box .title-tab .content_card .scenceItem_2 {
    width: 95%;
  }
  .introduce .top-box .title-tab .content_card .scenceItem img {
    width: 15vw;
    height: 15vw;
  }
  .introduce .top-box .title-tab .content_card .scenceItem {
    margin-bottom: 2vw;
  }
  .QOb4IfS2mj .feature-wrapper {
    width: 100%;
    padding-top: 9.6vw;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .QOb4IfS2mj .feature-wrapper img {
    width: 96%;
    
  }
  .introduce .top-box .title-tab .content_card .scenceItem_3 {
    width: 95%;
    height: auto;
  }
  .introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content {
    margin: 0 0 5vw 0 !important;
  }
  .introduce .top-box .title-tab .content_card .scenceItem_3 .scenceItem_content {
    width: 100%;
  }
}