.product{
  padding-top: 65px;
  padding-bottom: 89px;
  background: url(../images/bg.png) no-repeat center bottom;
  background-size: 100% auto;
}
.product_nav ul{
  display: flex;
  align-items: center;
  justify-content: center;
}
.product_nav ul li a{
  width: 149px;
  height: 59px;
  border-radius: 10px;
  line-height: 59px;
  text-align: center;
  font-weight: 600;
  font-size: 25px;
  cursor: pointer;
}
.product_nav ul li:not(:nth-last-child(1)){
  margin-right: 22px;
}
.product_nav ul li a:hover{
  background: #53b933;
  color: #fff;
}
.product_nav ul li.active a{
  background: #53b933;
  color: #fff;
}
.items{
  margin-top: 52px;
}
.items ul{
  width: 100%;
  display: flex;
  flex-wrap: wrap;
}
.item{
  width: calc(25% - 22px);
  margin-right: 29px;
  margin-bottom: 60px;
}
.item:nth-child(4n){
  margin-right: 0;
}
.item img{
  width: 100%;
  transition: all .3s;
}
.item a{
  overflow: hidden;
}
.item img:hover{
	transform:scale(1.1);
}
.item div{
  line-height: 1;
  height: 128px;
  background: #6d7781;
  color: #fff;
  padding: 0 22px;
  padding-top: 21px;
  position: relative;
  z-index: 2;
}
.item div h4{
  color: #fff;
  font-size: 18px;
}
.item div p{
  color: #fff;
  font-size: 16px;
  line-height: 16px;
  margin-top: 26px;
  text-overflow: -o-ellipsis-lastline;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}

.paging{
  display: flex;
  align-items: center;
  justify-content: center;
  margin: auto;
  margin-top: 82px;
  margin-bottom: 88px;
}
.icon{
  background: #6d7781;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin: 0 20px;
}
.icon:hover{
  background: #21cd6b;
}
.paging span{
  display: block;
  min-width: 31px;
  text-align: center;
  font-size: 20px;
  color: #666666;
  cursor: pointer;
}
.paging span:hover{
  color: #15a955;
}
.paging span.active{
  color: #15a955;
}

@media screen and (max-width: 1420px){
  .product_nav{
    padding: 0 20px;
  } 
  .item{
    margin-bottom: 30px;
  }
  .item div{
    height: 62px;
    padding: 10px 10px;
  }
  .item div p{
    width: 100%;
    margin-top: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
  }
  .paging{
    margin: 30px 0;
  }
}
@media screen and (max-width: 764px){
  .product{
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .product_nav ul li{
    width: 25%;
    height: 35px;
  }
  .product_nav ul li:not(:nth-last-child(1)){
    margin-right: 5px;
  }
  .product_nav ul li a{
    width: 100%;
    height: 100%;
    line-height: 35px;
    font-size: 16px;
  }
  .items{
    margin-top: 30px;
  }
  .item{
    width: calc(50% - 11px);
    margin-right: 22px;
  }
  .item:nth-child(2n){
    margin-right: 0;
  }
  .item div h4{
    font-size: 16px;
  }
  .item div p{
    font-size: 14px;
  }
}