* {
    margin: 0;
    padding: 0;
}

.detail {
    /* width: 1494px; */
    /* background-color: PINK; */
    margin: 0 auto;
    overflow: hidden;
}

.COB_top {
   height: 860px;
   background-color: #161616;
   display: flex;
   align-content: center;
   justify-content: center;
}

.COB_top h3 {
    /*margin: 140px auto 10px;
    text-align: center;
    font-size: 64px;
    color: #111;
    font-weight: 700;*/
}

.COB_top h3 span {
    font-size: 64px;
    color: #111;
    font-weight: 100;
}

.COB_top h4 {
    margin: 0 auto;
    text-align: justify;
    font-weight: 700;
    color: rgba(198, 198, 198, 1);
    font-size: 50px;
    width: 40rem;
    height: 85px;
}

.COB_top h4 span {
    display: inline-block;
    width: 100%;
}

.top_img {
    margin: -110px auto 80px;
}

.top_img img {
    display: block;
    margin: 90px auto;
    text-align: center;
}

.COB_toptext {
    /* width: 1920px; */
    margin: 0;
    background-color: #E6E6E6;
    height: 200px;
}

.COB_toptext p {
    overflow: hidden;
    width: 1024px;
    padding: 44px 0;
    margin: 0 auto;
    font-size: 22px;
    background-color: #E6E6E6;
    text-align: center;
    font-weight: 100;
    line-height: 37px;
    color: #000;
}


.color_c1{
    margin-top: 30px;
    background-color: #f5f5f5;
    padding: 1px 0;
}


.COB_top3_d {
    color: #000;
    text-align: center;
    margin: 100px 0 0;
}

.COB_top3_d h3 {
    font-size: 36px;
    margin: 15px 0;
    font-weight: 700;
}

.COB_top3_d h4,
.COB_top4_d h4 {
    font-size: 20px;
    margin: 0px 0 40px;
    font-weight: 100;
    line-height: 30px;
}

.COB_top3_d p,
.COB_top4_d p {
    font-size: 16px;
    margin: 10px 0;
    color: #333
}

.COB_top4 {
    width: 1494px;
    height: 624px;
    margin: 0 auto;
    background: rgba(230, 230, 230, 1);
}

.COB_top4_d {
    float: left;
    width: 25%;
    margin: 13% 35px 0 145px;
}

.COB_top4_d h3 {
    font-size: 36px;
    margin: 10px 0;
    font-weight: 700;
}

.COB_top4_d h4 {
    font-size: 20px;
    font-weight: 400;
}

.COB_top4_d p {
    color: rgb(80, 79, 79);
    line-height: 28px;
}

.top4_img {
    margin: 70px auto;
}

.top4_img img {
    display: block;
    margin: 0 auto;
    text-align: center;
}

.COB_top5,
.COB_top7 {
    margin: 0 auto;
    padding: 40px 0;
    margin-bottom: 30px;
}

.COB_top5_d,
.COB_top6_d,
.COB_top7 h3 {
    text-align: center
}

.COB_top5_d h3,
.COB_top6_d h3,
.COB_top7 h3 {
    font-size: 42px;
    margin: 50px 0 0px;
    font-weight: 700;
}

.COB_top5_d h4,
.COB_top6_d h4 {
    font-size: 20px;
    margin: 20px auto;
    font-weight: 400;
}

.COB_top5_d p,
.COB_top6_d p {
    font-size: 18px;
    margin: 40px auto;
    line-height: 30px;
}

.top5_img,
.top6_img,
.top7_img {
    margin: 0 auto;
}

.top5_img img,
.top6_img img,
.top7_img img {
    display: block;
    margin: 0 auto;
    text-align: center;
}

.top6_img {
    width: 100%;
    /* height: 675px; */
}
.top6_img img {
    width: 100%;
    /* height: 675px; */
}
.top6_img h4 {
    text-align: center;
    padding: 50px 0 30px;
    font-size: 22px;
    color: #555;
    font-weight: 400;
}

.COB_top3_dd {
    text-align: center;
}

.COB_top3_dd h3 {
    font-size: 42px;
    margin: 7rem 0 0;
    font-weight: 700;
}

.COB_top3_dd p {
    width: 33rem;
    margin: 1rem auto;
    font-weight: 300;
    text-align: center;
    line-height: 35px;
    font-size: 20px;
}

.COB_top3_ddd {
    text-align: center;
}

.COB_top3_ddd h3 {
    font-size: 42px;
    margin: 13rem 0 0;
    font-weight: 700;
}

.COB_top3_ddd p {
    font-size: 20px;
    font-weight: 300;
    text-align: center;
    line-height: 30px;
}

.top7_img {
    margin: 100px 0;
}

@media screen and (max-width:1400px) {
    body {
        overflow-x: scroll;

    }
}

@media screen and (max-width:1366px) {
    body {
        overflow-x: hidden;

    }



    .COB_top4_d h4 {
        font-size: 16px;
    }

    .COB_top4 {
        height: 500px;
    }
}

@media screen and (max-width:1200px) {
    body {
        overflow-x: scroll;

    }
}