.sutong-factory {
  padding: clamp(30px, 5.208vw, 100px) 0
}

.sutong-factory .list .list-item {
  padding: 0 20px;
}


.sutong-factory .list .list-item .outborder {
    position: absolute;
    height: 100%;
    width: 55px;
    border-left: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    left: -20px;
    bottom: -20px;
}

.sutong-factory h3 {
  color: #0388d1;
  text-align: center;
  font-size: clamp(24px, 2.34vw, 45px);
  font-weight: 600;
  line-height: 1;
  position: relative;
  z-index: 20
}

.sutong-factory h3::before {
  display: block;
  white-space: nowrap;
  color: #fff;
  position: absolute;
  left: 0;
  top: -38px;
  font-size: 98px;
  line-height: 1;
  z-index: -1;
  text-shadow: rgba(210, 217, 221, .75) 1px 0 0, rgba(210, 217, 221, .75) 0 1px 0, rgba(210, 217, 221, .75) -1px 0 0, rgba(210, 217, 221, .75) 0 -1px 0
}

.sutong-factory h3::after {
  display: block;
  width: 80px;
  height: 2px;
  background: var(--color-primary);
  margin: 10px auto 0 0
}

.sutong-factory .list {
  margin: 60px 0 0;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* 创建四列，每列宽度相等 */
  gap: 20px;
  text-align: center;
  align-items: flex-start;
}

.sutong-factory .pic {
  width: 100%;
  display: block;
  position: relative;
}

.sutong-factory img {
  width: 100%
}

.sutong-factory .list p {
  font-size: clamp(16px, 1.25vw, 24px);
  color: #000000;
  line-height: 1.2;
  font-weight: 500;
  margin: 10px auto 0;
  width: calc(100% - 70px);
}


@media screen and (max-width: 1441px) {

  .sutong-factory h3::before {
    font-size: 90px
  }


}

@media screen and (max-width: 1367px) {

  .sutong-factory h3::before {
    font-size: 80px
  }


}

@media screen and (max-width: 1281px) {
  .sutong-factory h3::before {
    font-size: 70px
  }

}

@media screen and (max-width: 1171px) {

  .sutong-factory h3::before {
    font-size: 60px
  }


}


@media screen and (max-width: 992px) {


  .sutong-factory .list {
     grid-template-columns: repeat(2, 1fr);
  }
  .sutong-factory h3::before {
    font-size: 50px
  }



  .sutong-factory h3 {
    text-align: center
  }

  .sutong-factory h3::before {
    left: 0;
    right: 0;
    text-align: center;
    top: -20px
  }

  .sutong-factory h3::after {
    margin: 10px auto 0
  }

  .sutong-factory .list {
    margin: 30px 0 0
  }

  .sutong-factory .swiper-slide p {
    font-size: 17px;
    line-height: 28px;
    margin: 20px 0 0
  }

  .sutong-factory .bot {
    width: 100%;
    margin: 30px auto 0
  }
}

@media screen and (max-width: 576px) {



  .sutong-factory h3::before {
    font-size: 40px
  }
  
  .sutong-factory .list {
     grid-template-columns: repeat(1, 1fr);
  }
}