.pc_header.white .nav li:nth-child(4)>a {
    color: #ff5a00
}

.bg_01 {
    width: 930px;
    height: 605px;
    margin: 270px auto 150px
}

.bg_01 .bg1-con {
    width: 100%;
    height: 550px;
    border: 25px #ff5a00 solid;
    padding: 0 45px;
    color: black;
    text-align: center;
    font-size: 18px
}

.bg_01 .bg1-con .title {
    font-size: 70px;
    font-weight: bold
}

.bg_01 .bg1-con p.title {
    margin-bottom: 40px
}

.bg_01 .bg1-con p {
    text-align: center;
    color: #1b1b1b;
    line-height: 35px
}

.bg_01 .case-link {
    font-size: 19px;
    margin-top: 10px;
    margin-left: 755px;
}

.bg_01 .case-link span {
    color: #949495;
    cursor: pointer;
}

.bg_02,
.bg_03 {
    color: black;
    text-align: center;
    position: relative
}

.bg_02 .title1 {
    font-size: 48px;
    color: #ff5a00
}

.bg_02 .title2 {
    color: #717071;
    font-size: 22px
}

.bg_02 .bg2-img-div {
    width: 832px;
    height: 503px;
    margin: 110px auto 145px
}

.bg_02 .bg2-l,
.bg_02 .bg2-r {
    position: absolute;
    top: 100px;
    width: 210px;
    height: 330px;
    left: 50%
}

.bg_02 .bg2-l {
    margin-left: -470px;
    text-align: right;
}

.bg_02 .bg2-r {
    margin-left: 270px;
    text-align: left
}

.bg_02 .bg2-l p:nth-child(1),
.bg_02 .bg2-r p:nth-child(1) {
    font-size: 73px;
    color: #ff5a00
}

.bg_02 .bg2-l p:nth-child(2),
.bg_02 .bg2-r p:nth-child(2) {
    font-size: 19px;
    color: #595757;
    font-weight: bold
}

.bg_02 .bg2-l p:nth-child(3),
.bg_02 .bg2-r p:nth-child(3) {
    font-size: 19px;
    color: #717071;
    line-height: 40px
}

.bg_03 {
    margin-bottom: 140px
}

.bg_03 p {
    font-size: 19px;
    color: #717071;
}

.bg_03 p:nth-child(1) {
    font-size: 34px;
    color: #ff5a00;
    font-weight: bold;
}

.bg_03 p:nth-child(2) {
    font-size: 34px;
    color: #ff5a00;
    margin-bottom: 50px;
    font-weight: bold
}

.bg_04 {
    justify-content: space-around;
    width: 1000px;
    margin: 0px auto 100px
}

.bg_04 .bg4-txt {
    align-items: start;
    margin-left: 15px
}

.bg_04 .bg4-txt p:nth-child(1) {
    font-size: 17px;
    margin: 0px;
    color: #717071
}

.bg_04 .bg4-txt p:nth-child(2) {
    font-size: 45px;
    color: #ff5a00;
    margin: 0px
}

.dv1 {
    width: 100%;
    height: 100px;
    position: relative;
}

.liner {
    width: 100%;
    height: 1px;
    background-color: white;
    position: absolute;
    top: 50%;
}

.dv2 {
    top: 20px;
    left: 290px;
    color: #ff5a00;
    font-size: 33px;
    text-align: center;
    width: 220px;
    height: 50px;
    line-height: 50px;
    margin: 0 auto;
    background-color: #fff;
    z-index: 3;
    position: absolute;
}

.point {
    width: 10px;
    height: 10px;
    background-color: #949495;
    border-radius: 50%;
    display: inline-block;
    margin-left: 5px;
}

@media (max-width: 750px) {
    .bg_01 {
        width: 100%;
        height: 1260px;
        margin-top: 210px
    }
    .bg_01 .bg1-con {
        width: 655px;
        height: 1255px;
        margin: 0px auto
    }
    .bg_01 .dv2 {
        left: 143px;
        font-size: 36px;
        margin-top: 50px
    }
    .bg_01 .bg1-con .title {
        font-size: 46px;
        color: black;
        margin-top: 40px
    }
    .bg_01 .bg1-con p {
        font-size: 28px;
        line-height: 58px
    }
    .bg_01 .case-link {
        margin-left: 480px;
        margin-top: 45px;
    }
    .bg_01 .case-link a {
        display: flex;
        flex-direction: row;
        align-items: center;
    }
    .bg_01 .case-link span {
        font-size: 26px;
        margin: auto 4px
    }
    .bg_01 .case-link span:nth-child(3) {
        font-size: 26px;
        margin-left: 8px
    }
    .bg_02 .bg-p1,
    .bg_02 .bg-p2 {
        align-items: flex-start;
        margin: 95px auto;
        width: 645px
    }
    .bg_02 .bg-p1 div:nth-child(1),
    .bg_02 .bg-p2 div:nth-child(1) {
        font-size: 101px;
        color: #ff5a00;
        line-height: 1;
        margin-right: 40px;
        font-weight: bold
    }
    .bg_02 .bg-p1 div:nth-child(2),
    .bg_02 .bg-p2 div:nth-child(2) {
        width: 510px;
        font-size: 27px;
        color: #595757;
        text-align: left;
        letter-spacing: 2px;
        line-height: 40px
    }
    .bg_02 .bg2-img-div {
        width: 750px;
        overflow: hidden;
        height: 540px
    }
    .bg_02 .bg2-img-div img {
        width: 120%;
        margin-left: -10%;
    }
    .bg_03 {
        padding: 0 24px;
        line-height: 60px
    }
    .bg_03 p {
        font-size: 26px;
        color: #666666
    }
    .bg_03 p:nth-child(1),
    .bg_03 p:nth-child(2) {
        font-size: 32px;
        font-weight: bold;
    }
    .bg_04 {
        width: 100%;
    }
    .bg_04 .bg4-txt p:nth-child(1) {
        font-size: 20px;
        margin: 0px;
        color: #717171
    }
    .bg_04 .bg4-txt p:nth-child(2) {
        font-size: 34px;
        color: #ff5a00;
        margin: 0px
    }
    .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
    }
    .detil{
        display: none;
    }
    .container{
        height: 2080px!important;
    }
    .mbdetil{
        height: 100%;
        margin-top: 20%;
    }
    .mbdetils{
        height: 1700px;
        margin-top: 20%;
        /* margin-left: 35px;
       margin-right: 35px; */
    }
    .dires{
        margin-left: 60px;
       margin-right: 60px;
    }
}

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

.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%
}

.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: #000;
}

.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;
    font-size: 18px;
}

.class-con .bg-4m-img img {
    height: 348px;
}

.leri {
    margin-top: 0;
    margin: 10px;
    width: 80%;
    margin-left: 10%;
    /* text-align: center; */
}

.left {
    float: left;
    width: 50%;
}

.left img {
    width: 100%;
}

.right {
    /* float: right; */
    height: 50%;
    margin-left: 55%;
}

.title-left {
    /* margin: 1.25rem; */
    font-size: 20px;
}

.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%
}

@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: 36px;
        margin: 30px 0px;
        font-weight: bold;
        line-height: 36px
    }
    .class-con .bg-4m-t2 {
        margin-bottom: 20px;
        font-size: 20px;
        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%;
        position: fixed;
        bottom: -2%;
        z-index: 2000;
        display: none;
    }
    .navclick ul>li {
        list-style: none;
        height: 52px;
        padding-top: 2%;
        border-bottom: 1px solid#b3b3b3;
    }
    .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;
    }
    .test_fall {
        margin-top: 10%;
    }
    .detil {
        margin-top: 20%;
    }
    .detil .title-left {
        margin: 0;
    }
    .left {
        float: left;
        width: 100%;
    }
}

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


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