.banner{
    width: 100%;
    position: relative;
}
.banner .bg{
    width: 100%;
    overflow: hidden;
}
.banner .bg img{
    width: 100%;
}
.banner .w1440{
    height: 100%;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
}
.banner .wz{
    width: 50%;    /* 450px */
    position: absolute;
    z-index: 3;
    left: 0;
    top: 50%;
    transform: translate(0,-50%);
}
.banner .wz h3{
    font-family: "HELVETICA-BOLD";
    font-size: 4.5rem;
    color: #035ca7;
    margin-bottom: 2.5rem;
}
.banner .wz p{
    font-size: 1.5rem;
    line-height: 2.25rem;
}



.aftersales{
    width: 100%;
    overflow: hidden;
}
.aftersales .w1440{
    display: flex;
    justify-content: space-between;
}
.aftersales .w1440 .l{
    width: 59.7222%;    /* 860px */
    margin: 8.125rem 0 10rem;
}
.aftersales .w1440 .l .tit{
    font-family: "HELVETICA-BOLD";
    font-size: 3.75rem;
    line-height: 4.375rem;
    margin-bottom: 1.875rem;
}
.aftersales .w1440 .l .subtitle{
    font-size: 1.5rem;
    line-height: 2.25rem;
    margin-bottom: 2.5rem;
}
.aftersales .w1440 .l .con{
    font-size: 1rem;
    line-height: 1.875rem;
}
.aftersales .w1440 .l .online{
    margin-top: 3.125rem;
    display: block;
    width: 11.25rem;
    height: 3.125rem;
    font-size: 1rem;
    line-height: 3.125rem;
    text-align: center;
    color: #ffffff;
    background: #035ca7;
    border-radius: 1.5625rem;
}
.aftersales .w1440 .r{
    width: 33.3333%;    /* 480px */
    padding: 7.5rem 6.875rem;
    position: relative;
}
.aftersales .w1440 .r:after{
    content: '';
    width: 300%;
    height: 100%;
    position: absolute;
    z-index: -1;
    left: 0;
    top: 0;
    background: #f7f7f7;
}
.aftersales .w1440 .r h3{
    font-family: "HELVETICA-BOLD";
    font-size: 1.25rem;
    line-height: 1.875rem;
    color: #035ca7;
}
.aftersales .w1440 .r p{
    font-size: 1rem;
    line-height: 1.5rem;
    color: #999999;
    margin: .625rem 0 3.125rem;
}
.aftersales .w1440 .r .ewm{
    display: inline-block;
    padding: .9375rem;
    border: 1px solid #cccccc;
    border-radius: .625rem;
    background: #ffffff;
}




@media (max-width: 1300px) {
    
}

@media (max-width: 1199px) {
    
}

@media (max-width: 768px) {
    .banner .bg img{
        width: 100%;
    }
    .banner .img img{
        width: 100%;
    }
    .banner .wz h3{
        font-size: 1.25rem;
        line-height: 1.875rem;
        margin-bottom: .625rem;
    }
    .banner .wz p{
        font-size: .875rem;
        line-height: 1.25rem;
    }



    .aftersales .w1440{
        flex-direction: column;
    }
    .aftersales .w1440 .l{
        width: 100%;
        margin: 3.125rem 0;
    }
    .aftersales .w1440 .l .tit{
        font-size: 1.875rem;
        line-height: 2.5rem;
    }
    .aftersales .w1440 .l .subtitle{
        font-size: 1.25rem;
        line-height: 1.875rem;
    }
    .aftersales .w1440 .r{
        width: 100%;
        padding: 1.25rem;
    }
    .aftersales .w1440 .r:after{
        width: 100%;
    }
    
}

@media (max-width: 550px) {

}