.product_list {
  margin-top: 150px;
}
.product_list a {
  display: block;
}
.product_list li {
  width: 23.1%;
  float: left;
  margin-right: 2.5%;
  border: solid 1px #f0f0f0;
  padding: 20px;
  text-align: center;
  margin-bottom: 40px;
}
.product_list li img {
  width: 100%;
}
.product_list li h3 {
  font-size: 20px;
  line-height: 30px;
  height: 35px;
  overflow: hidden;
  text-align: left;
  margin-top: 25px;
  background: url(../img/blue_line.png) left bottom no-repeat;
  padding-bottom: 5px;
}
.product_list li .desc {
  line-height: 24px;
  height: 72px;
  overflow: hidden;
  color: #999;
  margin: 20px 0 20px;
}
.product_list li .more {
  color: #999999;
  margin-bottom: 10px;
  border: solid 1px #e0e0e0;
  display: inline-block;
  line-height: 40px;
  padding: 0 30px;
  border-radius: 3px;
}
.product_list li:hover {
  background: #00428b;
  opacity: 1;
  color: #fff;
}
.product_list li:hover .more {
  background: #fff;
  color: #004188;
  opacity: 1 !important;
}
.product_list li:hover * {
  color: #fff;
}
.product_banner {
  position: relative;
}
.product_banner .blue_block {
  width: 100%;
  height: 700px;
  background: #f0f4f8;
  position: absolute;
  top: 200px;
}
.product_banner .swiper-button-next,
.product_banner .swiper-button-prev {
  width: 30px;
  height: 30px;
  border-radius: 30px;
  background: #00428b;
  position: absolute;
  bottom: 93px;
  top: auto;
}
.product_banner .swiper-button-next:after,
.product_banner .swiper-button-prev:after {
  font-size: 14px;
  color: #fff;
}
.product_banner .gallery-top img {
  width: 100%;
}
.product_banner .gallery-thumbs {
  position: absolute;
  bottom: 40px;
  width: 90%;
  cursor: pointer;
  box-sizing: border-box;
  margin: 10px 5%;
}
.product_banner .gallery-thumbs img {
  width: 100%;
  height: 100px;
}
.product_banner .gallery-thumbs .cover {
  background: rgba(0, 0, 0, 0.4);
  width: 100%;
  height: 100px;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
}
.product_banner .gallery-thumbs .swiper-slide-thumb-active .cover {
  display: none;
}
@media screen and (max-width: 1000px) {
  .product_banner {
    position: relative;
    margin-top: 30px;
  }
  .product_banner .blue_block {
    display: none;
  }
  .product_banner .swiper-button-next,
  .product_banner .swiper-button-prev {
    display: none;
  }
  .product_banner .gallery-thumbs {
    display: none;
  }
  .product_list {
    margin-top: 50px;
  }
  .product_list li {
    width: 100%;
    float: none;
    margin-right: 0;
    padding: 0;
    margin-bottom: 20px;
  }
  .product_list li h3 {
    font-size: 16px;
  }
  .product_list li .desc {
    line-height: 22px;
    height: auto;
    font-size: 15px;
  }
  .product_list li .more {
    margin-bottom: 15px;
    line-height: 30px;
    padding: 0 30px;
  }
}