.w12{
    width: 1200px;
    margin: 0 auto;
}
.flex{
    display: flex;
    align-items: center;
    justify-content: flex-start;
}
.space_between{
    justify-content: space-between;
}
header{
    background: #b92d2c;
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    z-index: 10;
}
header>div{
    height: 80px;
}
.logo{
    width: 151px;
    vertical-align: middle;
    margin-right: 34px;
}
.logo2{
    width: 128px;
    vertical-align: middle;
}
header ul{
    font-size: 16px;
    font-weight: 700;
    text-align: left;
    color: #fff;
    line-height: 80px;
}
header ul li{
    position: relative;
    margin-left: 57px;
    cursor: pointer;
}
header ul li.active::after{
    content:"";
    width: 40px;
    height: 4px;
    position: absolute;
    left:50%;
    bottom: 0px;
    margin-left: -20px;
    background: #f34e47;
}
.navDown {
    position: relative;
    padding-left: 13px;
    padding-right: 23px;
}
/* .navDown:hover{
    background: #DC3C3B;
} */
.historyList{
    display: none;
    position: absolute;
    top: 80px;
    right: 0px;
    width: 220px;
    height: 184px;
    background: #dc3c3b;
    box-sizing: border-box;
}
.historyList a{
    display: block;
    padding-left: 12px;
    font-size: 16px;
    font-weight: 400;
    text-align: left;
    color: #f7f8fa;
    line-height: 36.5px;
    letter-spacing: 1.6px;
}
.historyList a:hover{
    background: #f67675;
}
.navDown b {
    width: 0;
    height: 0;
    border-top: 5px #fff solid;
    border-left: 4px transparent solid;
    border-right: 4px transparent solid;
    border-bottom: 5px transparent solid;
    position: absolute;
    right: 10px;
    top: 38px;
}
.banner{
    padding-top: 80px;
}
.banner img{
    width: 100%;
    vertical-align: middle;
}
.content{
    background: url(../img/bg.png) left top no-repeat;
    background-size: 100% 100%;
    padding-bottom: 114px;
}
.partTitle{
    width: 323px;
    height: 102px;  
    background: url(../img/titleBg.png) left top no-repeat; 
    background-size: 100% 100%; 
    font-size: 46px;
    font-weight: 800;
    text-align: left;
    color: #000;
    line-height: 102px; 
    padding-left: 75px;
    box-sizing: border-box;
    margin: 0 auto;  
}
.partTitle span{
    color: #ee2624;
}
.part1{
    padding-top: 72px;
}
.partTitle1{
    margin-bottom: 42px;
}
.part1_imgs{
    position: relative;
    height: 450px;
}
.part1_imgs>div{
    position: absolute;
    border-radius: 50%;
    overflow: hidden;  
    cursor: pointer; 
}
.part1_imgs>div img{
    width: 100%;
    height: 100%;
    cursor: zoom-in;
}
.part1_img1{
    top: 38px;
    left: 6px;
    width: 400px;
    height: 400px;
}
.part1_img2{
    top: 32px;
    left: 500px;
    width: 121px;
    height: 121px;
}
.part1_img3{
    top: 187px;
    left: 456px;
    width: 182px;
    height: 182px;
}
.part1_img4{
    top: 33px;
    left:722px ;
    width: 158px;
    height: 158px;
}
.part1_img5{
    top: 225px;
    left:774px;
    width: 153px;
    height: 153px;
}
.part1_img6{
    top:0px;
    left:924px;
    width: 150px;
    height: 150px;
}
.part1_img7{
    top:120px;
    right:0px;
    width: 128px;
    height: 128px;
}
.part1_img8{
    top:286px;
    right:50px;
    width: 136px;
    height: 136px;
}
.part1_lis{
    padding-top: 6px;
    margin: 0 auto;
}
.part1_lis li{
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    width: 380px;
    height: 140px;
    background: #fff6f5;
    border-radius: 20px;
    box-shadow: 7.07px 7.07px 0px 10px #f5dbdb;
    margin-right: 37px;
    font-size: 13px;
    font-weight: 400;
    color: #333333;
    /* line-height: 24px; */
    padding: 0 17px 0 18px;
}
.part1_lis li img{
   width:66px;
   margin-right:16px ;
}

.part1_lis li span{
    font-weight:700 ;
}
.part1_lis li:last-child{
    margin-right: 0px;
}
.part1_lis li:last-child::before{
    width: 75px;
    height: 66px;
    background: url(../img/map.png) left top no-repeat;
    background-size: 100% 100% ;
}
.videoList{
    position: relative;
}
.videoList li{
   position: absolute;
}
.part2{
    margin-top: 68px;
    padding-top: 72px;
}
.videoItem .videowrap{
    position: relative;
    width: 219px;
    height: 219px;
    background: #ffffff;
    border: 4px solid #f58f98;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    background-position: 50%;
}
.videoItem .videowrap .videoPlay{
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -32px;
    margin-top: -37px;
    width: 63px;
    height: 75px;
    opacity: 0;
    transition: all .3s;
}
.videoItem .videowrap:hover .videoPlay{
    opacity: 1;
}
.videoWord{
    position:absolute ;
    display: flex;
    left: 50%;
    top:-20px ;
    color:#333333 ;
    margin-left: -16px;
    font-size: 15px;
    font-weight: 500;
    text-align: left;
}
.videoItem1{
    left: 40px;
    top: 134px;
}
.videoItem2{
    left: -30px;
    top: 380px;
}
.videoItem3{
    top: 160px;
    left: 360px;
}
.videoItem4{
    top: 380px;
    left: 230px;
}
.videoItem5{
    top: 40px;
    left: 586px;
}
.videoItem6{
    top: 211px;
    left: 450px;
}
.videoWord1{
    display: inline-block;
    transform: rotateZ(-11deg);
}
.videoWord2{
    display: inline-block;
    transform: rotateZ(6deg);
}
.videoList{
    height: 703px;
    z-index: 2;
}
.part2{
  position: relative;  
}
.part2::after{
    content: "";
    position: absolute;
    right: 0px;
    bottom:0px;
    width: 1394px;
    height: 503px;
    background: url(../img/astronauts.png) left top no-repeat;
    background-size: 100% 100%; 
}
.videoItem1 .videoWord{
    margin-left: -39px;
}
.videoItem2 .videoWord,
.videoItem3 .videoWord{
    margin-left: -31px;
}
.videoItem5 .videoWord .videoWord2,.videoItem3 .videoWord .videoWord2{
    display: inline-block;
    transform: rotateZ(8deg);
}
.videoItem5 .videoWord {
    margin-left: -38px;
}
.videoWord3{
    display: inline-block;
    transform: translateY(-2px) rotateZ(0deg);
}
.videoItem4 .videoWord{
    left: 39%;
}
.videoItem4 .videoWord1{
    transform:rotateZ(-10deg);
}
.videoItem4 .videoWord2{
    transform:translateY(-2px) rotateZ(1deg);
}
.part3{
    margin-top: 18px;
    padding-top: 72px;
}
.partContent3 h4{
    height: 18px;
    font-size: 18px;
    font-weight: 500;
    text-align: left;
    color: #333333;
    line-height: 18px;
    letter-spacing: 1.8px;
    margin-top: 51px;
    margin-bottom: 16px;
}
.pImgs3{
    align-items: center;
    justify-content: space-between;
}
.pImgs3 img{
    width:285px ;
    height:85px ;
    display: block;
}
.map{
    overflow: hidden;
    margin-top: 50px;
}
.map1{
    margin-top: 6px;
    width: 729px;
    height: 431px;
}
.map2{
    flex: 1;
    width: 472px;
    height: 435px;
} 
.pContent4{
    align-items: center;
    justify-content: space-between;
}
.pContent4 li{
    width: 580px;
    height: 240px;
    background: #fff6f5;
    border-radius: 20px;
    box-shadow: 6px 6px 0px 8px #f6dbdb; 
    padding: 42px;
    box-sizing: border-box;
}
.part4{
    margin-top: 114px;
}
.partTitle4{
    width: 295px;
    text-align: left;
    padding-left: 82px;
}
.pContent4{
    padding-top: 76px;
    align-items: center;
    justify-content: space-between;
}
.pContent4 li{
    color: #333333;
    justify-content: space-between;
}
.pContent4 li>img{
    width:157px ;
    height: 157px;
}
.pContent4 li h3{
    font-size: 18px;
    font-weight: 700;
    text-align: left;
    color: #333333;
    margin-bottom: 32px;
}
.pContent4 li .position{
    color: #ee2624;
    font-size: 14px;
    font-weight: 700;
}
.pC4_left img{
    width: 16px;
    margin-right: 5px;
} 
.phone{
    margin-top: 26px;
}
.email{
    line-height: 37px;
}

.bigImgWrap,.bigImgWrap2{
    display: none;
}
.bigImgMask,.bigImgMask2{
    position: fixed;
    left:0px;
    top: 0px;
    z-index: 13;
    width: 100%;
    height: 100%;
    background-color: #000;
    opacity: 0.5;
    cursor: zoom-out;
}
.bigImgMask2{
    cursor: pointer;
}
.bigImgClose,.bigImgClose2{
    position: fixed;
    right: 10px;
    top: 10px;
    width: 60px;  
    cursor: pointer;
    z-index: 15;
}
.bigImg{
    position: fixed;
    left: 50%;
    top: 50%;
    height: 400.5px;
    width: 600px;
    margin-left: -300px;
    margin-top: -200px;
    z-index: 16;
}
#video_player{
    position: fixed!important;
    left:50%;
    top: 50%;
    margin-left: -450px;
    margin-top: -277px;
    width: 900px;
    height: 555px;
    z-index: 16;
}
.part1_img1::after{
    content:"";
    position: absolute;
    left:50%;
    top: 50%;
    width: 77px;
    height: 93px;
    margin-left: -32px;
    margin-top: -46px;
    background: url(../img/play.png) left top no-repeat;
    background-size: 100% 100%;
}
.is_pc{
    display: block;
}
.is_pc_flex{
    display: flex;
}
.is_mobile,.is_mobile_flex{
    display: none;
}
@media (max-width: 750px) {
    html{
      font-size: 0.133333333vw;  
    }
    .is_mobile{
        display: block;
    }
    .is_mobile_flex{
        display: flex;
    }
    .is_pc,.is_pc_flex{
        display: none;
    }
    .w12{
        width: 100vw;
    }
    .logo{
        width: 151rem;
        height: 41rem;
        margin-right: 34rem;
    }
    .logo2{
        width: 128rem;
        height: 46rem;
        margin-right: 0px;
    }
    header{
        padding-left: 34rem;
        padding-right: 24rem;
    }
    header>div{
        height: 88rem;   
    }
    .banner{
        padding-top: 88rem;   
    }
    .part1{
        padding-top: 51rem;
    }
    .partTitle{
        width: 323rem;
        height: 102rem;
        background: url(../img/titleBg.png) left top no-repeat;
        background-size: 100% 100%;
        font-size: 46rem;
        font-weight: 800;
        text-align: left;
        color: #000;
        line-height: 102rem;
        padding-left: 75rem;
        box-sizing: border-box;
        margin: 0 auto;
    }
    .part1_imgs{
        height: 900rem;
    }
    .part1_img1 {
        top: 49rem;
        left: 35rem;
        width: 491rem;
        height: 488rem;
    }
    .part1_img1::after {
        left: 50%;
        top: 50%;
        width: 92rem;
        height: 112rem;
        margin-left: -46rem;
        margin-top: -56rem;
        background: url(../img/play.png) left top no-repeat;
        background-size: 100% 100%;
    }
    .part1_img2 {
        top: 534rem;
        left: 48rem;
        width: 142rem;
        height: 142rem;
    }
    .part1_img3 {
        top: 444rem;
        left: 497rem;
        width: 180rem;
        height: 180rem;
    }
    .part1_img3 {
        top: 444rem;
        left: 497rem;
        width: 180rem;
        height: 180rem;
    }
    .part1_img4 {
        top: 562rem;
        left: 275rem;
        width: 158rem;
        height: 158rem;
    }
    .part1_img5 {
        top: 714rem;
        left: 80rem;
        width: 175rem;
        height: 175rem;
    }
    .part1_img6 {
        top: 742rem;
        left: 335rem;
        width: 150rem;
        height: 150rem;
    }
    .part1_img7 {
        top: 679rem;
        left: 540rem;
        width: 163rem;
        height: 163rem;
    }
    .part1_img8 {
        top: 245rem;
        left: 560rem;
        width: 150rem;
        height: 150rem;
    }
    .part1_lis{
        padding:80rem 25rem 0;
        display: block;
    }
    .part1_lis li {
        position: relative;
        height: 240rem;
        width: 100%;
        background: #fff6f5;
        border-radius: 20rem;
        box-shadow: 7rem 7rem 0px 10rem #f5dbdb;
        margin-right: 0;
        font-size: 27rem;
        font-weight: 400;
        color: #333333;
        line-height: 36rem;
        padding: 0 36rem 0 26rem;
        box-sizing: border-box;
        margin-bottom: 35rem;
    }
    .part1_lis li img {
        width:114rem;
        margin-right: 40rem;
    }
    .part2 {
        margin-top: 146rem;
        padding-top: 0px;
    }
    .videoList li{
        width: 243rem;
        height: 243rem;
    }
    .videoItem .videowrap{
        width: 100%;
        height: 100%;
    }
    .videoList{
        height: 1059rem;
    }
    .videoItem .videowrap .videoPlay{
        width: 69rem;
        height: 82rem;
        margin-left: -34rem;
        margin-top: -41rem;
    }
    .videoItem1{
        left: 23rem;
        top: 100rem;
    }
    .videoItem2 {
        left: 40rem;
        top: 453rem;
    }
    .videoItem3 {
        left: 420rem;
        top: 67rem;
    }
    .videoItem4 {
        top: 504rem;
        left: 450rem;
    }
    .videoItem5 {
        top: 300rem;
        left: 260rem;
    }
    .videoItem6 {
        top: 262rem;
        left: 480rem;
    }
    .part2::after {
        content:"";
        width: 598rem;
        height: 805rem;
        background: url(../img/astronauts2.png) left top no-repeat;
        background-size: 100% 100%;
    }
    .content{
        background: url(../img/bg2.png) left top no-repeat;
        background-size: 100% 100%;
        padding-bottom: 151rem;
    }
    .part3 {
        margin-top: 153rem;
        padding-top: 72rem;
    }
    .partContent3 h4 {
        height: 30rem;
        font-size: 30rem;
        font-weight: bold;
        text-align: left;
        color: #333333;
        line-height: 30rem;
        letter-spacing: 1.8px;
        margin-top: 88rem;
        margin-bottom: 33rem;
        padding-left: 25rem;
    }
    .pImgs3{
        padding-left: 22rem;
        padding-right: 25rem;
        box-sizing: border-box;
        flex-wrap: wrap;
    }
    .pImgs3 img {
        width: 342rem;
        height: 100rem;
        display: block;
        margin-bottom: 23rem;
    }
    .map{
        margin-top: 63rem;
        display: block;
    }
    .map1{
        margin: 0px 12rem 31rem 9rem;
        height:431rem ;
        width: calc(100% - 21rem);
    }
    .map2 {
        margin: 0px 35rem 0 26rem;
        height:478rem ;
        width: calc(100% - 61rem);
    }
    .part4{
        margin-top: 151rem;
    }
    .partTitle4{
        padding-left: 103rem;
    }
    .pContent4{
        padding: 90rem 16rem 0 25rem;
        display: block;
        box-sizing: border-box;
    }   
    .pContent4 li{
        width: 100%;
        height: 293rem;
        background: #fff6f5;
        border-radius: 20px;
        box-shadow: 6px 6px 0px 8px #f6dbdb;
        padding: 43rem 34rem 42rem 56rem;
        box-sizing: border-box;
    }

    .pContent4 li:first-child {
        margin-bottom: 70rem; 
    }
    .pContent4 li>img{
        width: 208rem;
        height: 208rem;
    }
    .pContent4 li h3 {
        font-size: 28rem;
        font-weight: 700;
        text-align: left;
        color: #333333;
        margin-bottom: 32rem;
        line-height: 1;
    }
    .pContent4 li .position{
        font-size: 24rem;
    }
    .pC4_left img{
      width: 24rem;
      height: 24rem;
      margin-right:10rem ;  
    }
    .phone{
        font-size: 22rem;
        margin-top:26rem ; 
        line-height: 1; 
       
    }
    .email{
        font-size: 22rem;
        margin-top:26rem ; 
        line-height: 36rem  
    }
    .videoWord{
        font-size: 30rem;
    }
    .bigImgClose, .bigImgClose2{
        right: 10rem;
        top: 10rem;
        width: 60rem;
        cursor: pointer;
        z-index: 25;
    }
    .bigImg, #video_player {
        position: fixed;
        left: 0%;
        top: 200rem;
        height: auto;
        width: 95%;
        margin-left: 3%;
        margin-top: 0;
        z-index: 16;
    }
    header .is_mobile{
        width: 40rem;
        height: 26rem;
    }
    header>.w12{
        width: calc(100% - 58rem);
        margin: 0px;
    }
    .nav_list{
        display: none;
        position: absolute;
        height: 864rem;
        width: 460rem;
        right: 0px;
        top: 87rem;
        background: #B92D2C;
      }
      header ul li{
        padding-left: 50rem;
        margin-left: 0px;
      }
      header ul {
        font-size: 30rem;
        font-weight: 500;
        text-align: left;
        color: #fff;
        line-height: 88rem;
    }
    header ul li.active::after{
        display: none;
    }
    .navDown {
        position: relative;
        padding-left: 0;
        padding-right: 0;
    }
    .navDown span{
        padding-left: 50rem;
    }
    .navDown b{
        left: 190rem;
        right: auto;
        top:40rem;
        z-index: 1000;
        border-top: 15rem #fff solid;
    border-left: 11rem transparent solid;
    border-right: 11rem transparent solid;
    border-bottom: 15rem transparent solid;
    position: absolute;
    }
    .historyList{
        display: block;
        position: static;
        top: 80px;
        right: 0px;
        width: 100%;
        height: 184px;
        background: none;
        box-sizing: border-box;
        outline: none;
    }
    .historyList a {
        display: block;
        padding-left: 50rem;
        font-size: 30rem;
        font-weight: 400;
        text-align: left;
        color: #f7f8fa;
        line-height:88rem;
        letter-spacing:0;
       
    }
    .historyList a.link{
        background: #f67675;
    }
}