.bg_1 {
    width: 100%;
    text-align: center;
    margin-bottom: 110px
}

.pc_header.white .nav li:nth-child(3)>a {
    color: #ff5a00
}
.jl{
    margin: 100px auto 30px auto!important;

}
.h-btn-div {
    /* width: 260px;height: 50px; */
    border-radius: 40px;
    margin: 200px auto 30px auto;
    position: relative
}

.h-btn-div .btn-back-div {
    width: 100%;
    line-height: 50px;
    color: white;
    font-size: 16px
}

.h-btn-div .btn-back-div span {
    margin: auto 25px
}

.h-btn-div .btn-back-div .btn-l,
.h-btn-div .btn-back-div .btn-r {
    font-weight: bold;
    color: #ff5d3d;
    width: 130px;
    position: absolute;
    top: 0px;
    height: 50px;
    background-color: white;
    border: 1px #ff5d3d solid;
    border-radius: 40px
}

.h-btn-div .btn-back-div .btn-r {
    right: 0px;
}

.h-btn-div .btn-back-div .btn-l {
    left: 0px;
}

.h-btn-div .btn-back-div a {
    display: block;
    width: 130px;
    height: 48px;
    position: absolute;
    top: 0px;
    border-radius: 40px;
    color: white;
    cursor: pointer;
    font-weight: bold
}

.h-btn-div .btn-back-div span:nth-child(2) a {
    right: 0px;
}

.h-btn-l .btn-l {
    display: block
}

.h-btn-r .btn-r {
    display: block
}

.h-btn-div .btn-back-div a:hover {
    /*margin-top: -5px;*/
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -ms-transform: scale(1.1);
    -o-transform: scale(1.1);
    transform: scale(1.1);
}

.bg_1 .ul-div {
    width: 1570px;
    font-size: 18px;
    padding: 0px;
    margin: auto auto
}

.bg_1 .ul-div ul {
    flex-wrap: wrap;
    line-height: 60px;
    padding: 0px
}

.bg_1 ul li>a {
    display: block;
    color: #aaaaab;
}

.bg_1 ul li .active {
    color: #ff5d3d;
    font-weight: 800
}

.bg_1 ul li {
    margin: 0px auto;
}

.class-con {
    margin-top: 60px;
}

.class-con .bg-4-c {
    display: flex;
    margin-bottom: 15px;
    justify-content: center;
}

.class-con .bg-4-c-m {
    visiblity: visible!important;
}

.class-con .bg-4m-img {
    width: 100%;
    height: 355px;
    overflow: hidden;
}

.class-con .bg-4m-img img {
    width: 100%;
    height: 100%;
}

.class-con .bg-4-c-m {
    width: 632px;
    position: relative;
    font-size: 26px;
    height: 495px;
    margin: 0 3px
}

.class-con .bg-4m-t1,
.bg-4m-t2 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    color: #9b9b9b;
}

.class-con .bg-4m-t1 {
    font-weight: bold;
    margin-top: 25px;
    margin-bottom: 13px
}

.class-con .bg-4m-t2 {
    margin-top: 13px;
    margin-bottom: 25px
}

.btn-down-div {
    width: 116px;
    height: 60px;
    margin: 90px auto;
    cursor: pointer;
}

.m-btn-div {
    justify-content: space-around;
    margin: 205px auto 110px;
    width: 90%
}

.m-btn-div .m-btn {
    width: 300px;
    height: 85px;
    background-color: #ff5d3d;
    color: white;
    font-size: 35px;
    justify-content: center;
}

.m-btn-div .m-btn .btn-img-div {
    height: 11px
}

.m-class-btn-div1,
.m-class-btn-div2 {
    width: 100%;
    height: 100%;
    z-index: 999;
    position: fixed;
    top: 1.05rem;
    left: 0px;
    background: rgba(0, 0, 0, 0.8);
    align-items: start;
}

.m-class-btn-div1 ul,
.m-class-btn-div2 ul {
    flex-wrap: wrap;
    margin-top: 1rem;
    padding: 0px;
    margin-left: 0.8rem;
}

.m-class-btn-div1 li,
.m-class-btn-div2 li {
    display: inline-block;
    margin: 0.2rem 0
}

.m-class-btn-div1 a,
.m-class-btn-div2 a {
    color: white;
    display: block;
    width: 3rem;
    height: 1rem;
    font-size: 0.4rem;
    line-height: 1rem;
    text-align: center;
}

.m-class-btn-div2 a {
    width: 6rem;
    height: 1rem
}

.close-div {
    position: absolute;
    width: 0.65rem;
    height: 0.65rem;
    right: 0.5rem;
    top: 0.5rem
}

.close-div img {
    width: 100%;
    height: 100%
}
.jplist{
    margin-top: 14%;
    width: 100%;
    height: 300px;
}
.jplist .jpal{
font-size: 30px;
font-weight: bold;
}
.jplist .detil{
    margin-top: 20px;
}

.jplist img{
    width: 500px;
    height: 300px;
}
.jplist .detil p:nth-child(1){
    font-size: 40px;
}
.jplist .detil p:nth-child(2){
    font-size: 25px;
}
.jplist .detil p:nth-child(3){
    margin-top: 8%;
    font-size: 18px;
}
.jplist .detil div{
    display: inline-block;
    margin-left: 20px;
}

@media (min-width: 750px) {
    .mdjm {
        display: none;
    }
    .navclick {
        display: none;
    }
    .nvaheader{
        display: none;
    }
    .m-footer-nav{
        display: none;
    }

}

@media (max-width: 750px) {
    .class-con .bg-4-c {
        flex-direction: column;
        margin-bottom: 0px
    }
    .class-con .bg-4-c-m {
        width: 750px;
        height: 600px
    }
    .class-con .bg-4-c-m .bg-4m-img>img {
        width: 100%;
        height: 100%;
    }
    .class-con .bg-4m-t1 {
        font-size: 30px;
        margin: 30px 0px;
        font-weight: bold;
        line-height: 36px
    }
    .class-con .bg-4m-t2 {
        margin-bottom: 20px;
        font-size: 30px;
        line-height: 36px;
        margin-bottom: 30px
    }
    .class-con .bg-4m-img {
        height: 422px
    }
    .nvaheader {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .nvaheader .tells {
        display: flex;
        align-items: center;
    }
    .navclick {
        width: 100%;
        /* height: 500px; */
        position: fixed;
        bottom: -1.5%;
        z-index: 2000;
        /* background-color: #000; */
        display: none;
    }
    .navclick ul>li {
        list-style: none;
        /* margin-top: 10px; */
        height: 52px;
        padding-top: 2%;
        border-bottom: 1px solid#b3b3b3;
        /* background-color: #ff5a00; */
    }
    .navclick ul {
        display: flex;
        flex-direction: column;
        text-align: center;
        font-size: 20px;
        padding: 0px;
        background-color: #858585;
    }
    .navclick ul>li a {
        color: #fff;
    }
    .navclick .a1 {
        background-color: #ff5a00;
    }
    .m-footer-nav {
        display: block;
        height: 400px;
        text-align: initial;
        background-color: #000000;
        padding: 85px 45px;
        width: 100%;
        /* margin-top: 100%; */
    }
    .m-footer-nav div:nth-child(1) {
        margin-bottom: 80px
    }
    .m-footer-nav div:nth-child(3) {
        margin: 20px 50px
    }
    .m-footer-nav p {
        color: white;
        font-size: 20px
    }
    .pcjm {
        display: none;
    }
    .mdjm {
        margin-top: 20%;
    }
    .mdjm .titles p {
        font-size: 40px;
        font-weight: bold;
    }
    .flaota-rig {
        width: 50px;
        height: 50px;
        background-color: #fff;
        position: fixed;
        border-radius: 100%;
        right: 0;
        top: 50%;
        background-image: url(../images/img001/dw.png);
        /* background-image: url; */
    }
    .centertitlr {
        width: 170px;
        height: 247px!important;
        background-color: #fff;
        top: 34%!important;
        left: 30%;
        position: fixed;
        display: none;
    }
    .centertitlr .mbsg {
        display: flex;
        flex-direction: column;
        font-size: 17px;
        align-items: center;
        padding: 0;
        margin-top: 8%;
    }
    .centertitlr .mbsg li {
        margin: 10px;
    }

    .jpfirsttwo{
        display: flex!important;
        justify-content: center!important;
    }
    .jpfirstone .jpfirsttwo img{
        width: 400px!important;
        height: 180px!important;
    }
    .jpfirstone .jpright p{
        margin: 10px!important;
    }
}

.bg_1 ul li>a:hover {
    color: #ff5a00!important;
}