h2{
    margin-bottom: 30px;
}
/*header{*/
/*    background:rgba(68, 67, 67, .5);*/
/*}*/

.banner-con{
    background: linear-gradient(130deg,#d7d7d7,#ffffff);
    margin-top: 80px;
    padding-top: 100px;
}
.banner-con .banner{
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;

}
.banner-con .banner h1{
    font-size: 70px;
    margin:0 0 20px;
    font-weight: bold;
}
.banner-con .banner img{
    margin: 0 auto;
}
.banner-con .banner ul{
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 20px 0 30px;
}
.banner-con .banner ul li:first-child{
    border: 2px solid #444343;
        transition: all .5s ease;
}
.banner-con .banner ul li:first-child:hover{
    border-color: #ff6d00;
}
.banner-con .banner ul li a{
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 5px 30px;
    height: 100%;
    color: #444343;
    transition: all .5s ease;
}
.banner-con .banner ul li a:hover{
    background: #ff6d00;
    color: #ffffff;
}
.banner-con .banner ul li:last-child{
    border: 2px solid #ff6d00;
    background-color: #ff6d00;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 5px 50px;
  
}
.banner-con .banner ul li:last-child p:last-child{
    font-size: 22px;
    font-weight: bold;
}
.submenu{
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 3vw;
    z-index: 200;
}
.submenu ul{
    display: flex;
    justify-content: center;
    gap: 20px;

}
.submenu ul li a{
    background-color: #ffebbe;
    display: block;
    width: 180px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    font-size: 20px;
    color: #444343;
}

.introduce-con{
   margin-top: 3vw;
}
.introduce-con .introduce{
    max-width: 1400px;
    margin: 0 auto;
}
.introduce-con .introduce .left-right-con{
    display: flex;
    justify-content: space-between;
    gap: 30px;
}
.introduce-con .introduce .left-right-con .left-con{
    max-width: 50%;
}
.introduce-con .introduce .left-right-con .left-con img:nth-of-type(1){
    margin: 30px 0 10px;
}
.introduce-con .introduce .left-right-con .right-con{
    padding: 20px 0 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.introduce-con .introduce .left-right-con .right-con h3{

    margin-bottom: 20px;
}
.introduce-con .introduce .left-right-con .right-con ul{
    display: flex;
    gap: 20px;
}
.introduce-con .introduce .left-right-con .right-con ul li{
    background-color: #f39800;
    color: #ffffff;
    font-size: 20px;
    padding: 5px 20px;
    border-radius: 50px;
}

.principle-con{
    margin: 80px 0;
}
.principle-con .principle{
    max-width: 1400px;
    margin: 0 auto;
}
.principle-con .principle img{
    margin: 0 auto;
    height: auto!important;
}
.product-images-con{

}
.product-images-con .product-images{
    max-width: 1400px;
    margin: 0 auto;
}
.product-images-con .product-images ul{
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 30px;
}
.product-images-con .product-images p{
    color: #f39800;
    font-size: 20px;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
    white-space: nowrap;
}
.product-images-con .product-images p:before{
    content: "";
    width: 100%;
    height: 1px;
    background-color: #f39800;
    display: block;
    margin-right: 20px;
}
.product-images-con .product-images p:after{
    content: "";
    width: 100%;
    height: 1px;
    background-color: #f39800;
    display: block;
    margin-left: 20px;
}

.advantage-con{
    margin: 80px 0;
}
.advantage-con .advantage{
  
    max-width: 1400px;
    margin: 0 auto;
   
}
.advantage-con .advantage ul{
    background: url(../../images/advantage-bg.jpg) no-repeat;
    background-size: 100% 100%;
    padding: 50px 30px;
    display: flex;
    justify-content: space-between;
    gap: 60px;
}

.advantage-con .advantage ul li{
    background-color: #ffffff;
    width: calc((100% - 60px - 180px) / 4);
    padding: 80px 30px;
    border-radius: 100px;
}
.advantage-con .advantage ul li h3{
    margin-bottom: 40px;
    text-align: center;
}
.technical-params-con{
    margin: 80px 0;
}
.technical-params-con .technical-params{
    max-width: 1400px;
    margin: 0 auto;
}
.technical-params-con .technical-params .table-data{
    overflow-x: auto;
}
.technical-params-con .technical-params .table-data .table{
    text-align: center;
    vertical-align: middle;
}
.table tr:first-child td,.table tr:first-child th{
    background-color: #0a1a32 !important;
    color: #ffffff;
}
.recommend-con{
    background: url(../../images/recommend-bg.png) no-repeat;
    background-size: 100% 100%;
    padding: 36px 0 50px;
    margin: 80px 0;
}
.recommend-con .recommend{
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}
.recommend-con ul{
    display: flex;
    justify-content: space-between;
    gap: 20px;
}
.recommend-con ul li{
    width: calc((100% - 60px) / 4);
    background: url(../../images/product-bg.png) no-repeat;
    background-size: 100% 100%;
    
}
.recommend-con ul li h3{
    font-size: 20px;
    color: #444343;
    font-weight: bold;
}
.recommend-con ul li img:nth-of-type(1){
    margin: 0 auto;
    padding: 40px 30px;
}
.recommend-con ul li img:nth-of-type(2){
    margin: 0 auto;
    padding: 20px 0;
}
.recommend-con ul li:hover{
    background: url(../../images/product-active-bg.png) no-repeat;
    background-size: 100% 100%;
}
.recommend-con ul li:hover h3{
    color: #ffffff;
}
.recommend-con ul li:hover img:nth-of-type(2){
    filter: brightness(3) contrast(3);
}
@media (max-width:1400px){
    .banner-con,.submenu,.introduce-con,.principle-con,.product-images-con,.advantage-con,.technical-params-con,.recommend-con{
        padding-left: 15px;
        padding-right: 15px;
    }
}
@media (max-width:1080px){
       .banner-con .banner h1{
        font-size: 60px;
    }
    .submenu{
        overflow-x: auto;
    }
    .submenu ul{
        display: block;
        white-space: nowrap;
    }
    .submenu ul li{
        display: inline-block;
    }
    .submenu ul li:not(:last-child){
        margin-right: 20px;
    }
    .introduce-con .introduce .left-right-con .right-con ul{
        flex-wrap: wrap;
    }
    .advantage-con .advantage ul{
        gap: 30px;
    }
    .advantage-con .advantage ul li{
        width: calc((100% - 60px - 60px) / 4);
    }
}
@media (max-width:900px){
       .banner-con .banner h1{
        font-size: 40px;
    }
     .advantage-con .advantage ul{
        gap: 15px;
    }
     .advantage-con .advantage ul li{
        width: calc((100% - 60px - 30px) / 4);
        padding: 50px 20px;
    }
}
@media (max-width:768px){
    .advantage-con .advantage ul{
        flex-wrap: wrap;
    }
    .advantage-con .advantage ul li{
        width: calc((100% - 15px) / 2);
    }
    .introduce,.principle-con,.product-images,.technical-params-con,.recommend-con,.advantage-con{
        margin: 30px auto;
    } 
    .introduce-con .introduce .left-right-con{
        flex-wrap: wrap;
    }
    .introduce-con .introduce .left-right-con .left-con{
        max-width: 100%;
    }
    .product-images-con .product-images ul{
        gap: 15px;
        margin-bottom: 15px;
    }
    .product-images-con .product-images ul:nth-of-type(2){
        flex-wrap: wrap;
    }
    .product-images-con .product-images ul:nth-of-type(2) li{
        width: calc((100% - 15px) / 2);
    }
    .product-images-con .product-images p{
        font-size: 18px;
    }
     .recommend-con ul{
        flex-wrap: wrap;
    }
    .recommend-con ul li{
        width: calc((100% - 20px) / 2);
    }
    .banner-con .banner ul li:last-child,.banner-con .banner ul li a{
        padding: 5px 20px;
    }
    
    
}
@media (max-width:400px){
    
    .banner-con{
        padding-top: 30px;
    }
    .banner-con .banner h1{
        font-size: 30px;
    }
     .recommend-con ul li h3{
        font-size: 16px;
    }
    .recommend-con ul li img:nth-of-type(1){
        padding: 10px;
    }
    .recommend-con ul li img:nth-of-type(2){
        display: none;
    }
    .banner-con .banner ul{
        flex-wrap: wrap;
    }
    .banner-con .banner ul li{
        width: 100%;
        text-align: center;
    }
    .product-images-con .product-images p{
        font-size: 14px;
    }
    .advantage-con .advantage ul{
        padding: 30px 15px;
    }
    .advantage-con .advantage ul li h3{
        font-size: 18px;
    }
}