.ByBox{

    position: relative;
    
}
.ByBg{
    width: 100vw;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    object-fit: cover;
}
.ByBg img{
     width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    object-fit: cover;
}
.ByBan{
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
}
.ByBan img{
    width: 100%;
    height: calc(100% + 50px);
    position: relative;
    top: -50px;
    object-fit: cover;
    transform: scale(1.1);
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -ms-transform: scale(1.1);
    -o-transform: scale(1.1);
    transition: all 1.5s ease-out;
    -webkit-transition: all 1.5s ease-out;
    -moz-transition: all 1.5s ease-out;
    -ms-transition: all 1.5s ease-out;
    -o-transition: all 1.5s ease-out;
}
.ByBan::before {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    content: '';
    z-index: 1;
    background-image: linear-gradient(to bottom, rgb(1, 46, 113, .2) 30%, rgb(1, 46, 113, .5) 100%);
}
.ByBan.Act img{
 top: 0;
 transform: scale(1);
 -webkit-transform: scale(1);
 -moz-transform: scale(1);
 -ms-transform: scale(1);
 -o-transform: scale(1);
}
.ByTbox{
    width: 100%;
    position: absolute;
    left: 0;
    z-index: 2;
    bottom: 0;
 
}
.ByTop{
    padding: 70px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
       position: relative;
}
.ByTbox::before{
    width: 100%;
    height: 1px;
    position: absolute;
    left: 0%;
    top: 0;
    content: '';
    background: rgba(255, 255, 255, .2);
}
.ByTit{
       font-size: 66px;
    font-weight: 500;
    line-height: 1;
    color: #fff;
    position: relative;
   
}
.ByEn{
        font-size: 100px;
    line-height: 1.3;
    font-weight: 600;
    color: #fff;
    position: relative;
    text-transform: uppercase;
   font-family: "PTSans";
}
/* .ByTit::after{
    width: 50px;
    height: 2px;
    position: absolute;
    left: 0;
    bottom: 0;
    content: '';
    background: #fff;
} */
.BySb{
  
    position: relative;
    display: inline-flex;
    align-items: center;
}
.BySb svg{
    width: 40px;
    height: 40px;
    position: relative;
    animation: example 4s infinite ;
    -webkit-animation: example 4s infinite ;
}

@keyframes example {
  0% {
    transform: translateY(-5px) ;
    -webkit-transform: translateY(-5px) ;
    -moz-transform: translateY(-5px) ;
    -ms-transform: translateY(-5px) ;
    -o-transform: translateY(-5px) ;
}

   100% {
 transform: translateY(5px) ;
 -webkit-transform: translateY(5px) ;
 -moz-transform: translateY(5px) ;
 -ms-transform: translateY(5px) ;
 -o-transform: translateY(5px) ;
}
}
.BySb svg path{
    fill: #fff;
}
.BySb p{
    font-size: 18px;
    color: #fff;
    margin-left: 10px;
}


.ByJt{
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
}

.ByJt svg{
    width: 50px;
    height: 50px;
    animation: example 4s infinite ;
    -webkit-animation: example 4s infinite ;
}
.ByJt svg path{
    fill: #fff;
}


.byNavBox{
    width: 100%;
    position: relative;
    /* background: #fff; */
   
}
.byNavList{
    position: relative;
    display: flex;
    align-items: center;
      display: flex;
    justify-content: space-between;
     border-bottom: 1px solid rgb(1, 46, 113, .1);
}
.byNavItem{

   
}
.byNavItem p{
    padding: 0 10px;
 font-size: 32px;
 font-weight: 500;
    color: #666;
     height: 130px;
     position: relative;
      display: flex;
    justify-content: center;
    align-items: center;
}
.byNavItem.Act p{
    color: #012e71;
}

.byNavItem p::before{
    width: 0%;
    height: 2px;
    position: absolute;
    left: 0;
    bottom: 0;
    content: '';
    background: #012e71;
    transition: all 0.48s;
    -webkit-transition: all 0.48s;
    -moz-transition: all 0.48s;
    -ms-transition: all 0.48s;
    -o-transition: all 0.48s;
}
.byNavItem.Act p::before{
     width: 100%;
}























.ByZTit{
    position: relative;
}

.ByZTit p {
    font-size: 60px;
    line-height: 1.3;
    font-weight: 500;
    color: #012e71;
}


.ByZTit span {
    font-size: 18px;
    padding-left: 18px;
    position: relative;
    display: block;
    font-weight: 500;
    line-height: 1;
    color: #999;
    margin-bottom: 18px;
}

.ByZTit span::before {
    width: 6px;
    height: 6px;
    position: absolute;
    left: 2px;
    top: 5px;
    content: '';
    background: #999;
    border-radius: 1px;
    -webkit-border-radius: 1px;
    -moz-border-radius: 1px;
    -ms-border-radius: 1px;
    -o-border-radius: 1px;
}
.ByZTit.white p {
     color: #fff;
}

.ByZTit.red p {
     color: #b11b1c;
}



















.ByBon{
    display: flex;
    justify-content: space-between;
}



.conARig{
    width: 65%;
    position: relative;
    display: flex;
    justify-content: space-between;
    

}
.conAItem{
    width: 45%;
    display: flex;
        justify-content: flex-end;
}

.conAItem h4{
    font-size: 20px;
    color: #fff;
    font-weight: 500;
}
.conAItem p{
    font-size: 18px;
    color: #fff;
    opacity: .8;
        font-family: "Montserrat";
}
.byNavCon{
    position: relative;
    display: none;
}
.byNavText{
      width: 180px;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: 0 10px;
    cursor: pointer;
}
.byNavText p{
    font-size: 20px;
        font-weight: 500;
    color: #666;
    
}
.byNavText svg{
    width: 18px;
    height: 18px;
}
.byNavText svg path{
    fill: #666;
}
.byNavXl{
    display: none;
    width: 100%;
    position: absolute;
    left: 0;
    top: calc(100% - 1px);
    background: #fff;
    padding: 10px 20px;
    z-index: 9;
    border-radius: 0 0 16px 16px;
    background: rgba(255, 255, 255, .8);
    backdrop-filter: blur(5px);
    -webkit-border-radius: 0 0 16px 16px;
    -moz-border-radius: 0 0 16px 16px;
    -ms-border-radius: 0 0 16px 16px;
    -o-border-radius: 0 0 16px 16px;
}
.byNavXl a{
    display: flex;
    font-size: 18px;
    font-weight: 500;
    color: #666;
    padding: 5px 0;
    transition: all 0.48s;
    -webkit-transition: all 0.48s;
    -moz-transition: all 0.48s;
    -ms-transition: all 0.48s;
    -o-transition: all 0.48s;
}
.byNavXl a:hover{
    color: #012e71;
}













.navBox{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 70px;
}
.navItem {
    width: 55px;
    height: 55px;
    border-radius: 8px;
    /* background: #f7f8f9; */
      border: 1px solid rgb(0, 0, 0, .1);
    /* box-shadow: 0 0 20px rgba(0, 0, 0, .1); */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    margin: 0 5px;
    transition: all 0.48s;
    -webkit-transition: all 0.48s;
    -moz-transition: all 0.48s;
    -ms-transition: all 0.48s;
    -o-transition: all 0.48s;
    cursor: pointer;
    font-size: 18px;
        font-family: "Montserrat";
}
.navItem.Act{
    background: #012e71;
    color: #fff;
}
.navItem:hover{
    background: #012e71;
    color: #fff;
}















            .ByZText {
                position: relative;
                width: 60%;
                margin: 100px 0 80px;
            }

            .ByZText::before {
                width: 1px;
                height: 60px;
                position: absolute;
                left: 50%;
                top: -80px;
                content: '';
                background: rgb(0, 0, 0, .3);
            }

            .ByZText h4 {
                font-size: 32px;
                font-weight: 500;
                margin-bottom: 20px;
                text-align: center;
            }

            .ByZText p {
                font-size: 18px;
                color: #666;
                text-align: center;
            }

.ByZText.ByZText_rig{
    margin: 0;
    width: 100%;
}
.ByZText.ByZText_rig::before{
    width: 0;
}
.ByZText.ByZText_rig  h4,.ByZText.ByZText_rig  p {
    text-align: left;}


.ByZText.ByZText_Top{
    margin: 30px 0 50px;
}
.ByZText.ByZText_Top::before{
    width: 0;
}

 




@media (max-width: 1680px) {
    .ByZTit p {
        font-size: 52px;
    }
        .ByTit {
        font-size: 60px;
    }
    .ByZText{
        width: 70%;
    }
    .byNavItem p {
    font-size: 28px;
    height: 110px;}
}
@media (max-width: 1480px) {
    .ByZTit p {
        font-size: 48px;
    }
        .ByTit {
        font-size: 52px;
    }
    .navItem {
    width: 50px;
    height: 50px;}
    .ByZText p {
    font-size: 16px;}
    .ByZText h4 {
    font-size: 28px;}
    .ByZText {
         margin: 80px 0 50px;
    width: 75%;}
.ByZText::before {
    height: 50px;
    top: -60px;}
}
@media (max-width: 1368px) {
    .navItem {
    width: 45px;
    height: 45px;}
        .byNavItem p {
        font-size: 26px;
        height: 110px;
    }
    .ByZTit p {
        font-size: 42px;
    }
        .ByTit {
        font-size: 48px;
    }
    .ByJt svg {
            font-size: 16px;
    width: 45px;
    height: 45px;}
    .ByTop {
    padding: 50px 0;}
    .navBox {
    margin-top: 50px;
}
}
@media (max-width: 1280px) {
    .ByZTit p {
        font-size: 40px;
    }
     .ByTit {
        font-size: 44px;
    }
        .byNavItem p {
        font-size: 24px;
        height: 100px;
    }
        .ByZText h4 {
        font-size: 24px;
    }
}
@media (max-width: 1200px){
        .byNavItem p {
        font-size: 22px;
        height: 92px;
    }
      .ByTit {
        font-size: 40px;
    }
      .ByZText {
        width: 80%;
    }
}
@media (max-width: 1024px) {
    .ByZTit p {
        font-size: 36px;
    }
         .ByTit {
        font-size: 36px;
    }
    .ByZText {
        width: 100%;
    }
    .ByBan{
        height: 500px;
    }
}
@media (max-width: 900px) {
     
    .ByZTit p {
        font-size: 32px;
    }
    .ByTit {
        font-size: 28px;
    }
    .byNavList{
        display: none;
    }
    .byNavCon{
    display: block;
}
.byNavBox{
    border-bottom: 1px solid rgb(1, 46, 113, .1);
}
}
@media (max-width: 680px) {
     .ByZText h4 {
        font-size: 20px;
        margin-bottom: 10px;
    }
       .ByZText {
         margin: 60px 0 30px;}
.ByZText::before {
    height: 30px;
    top: -40px;}
        .recAMs {
        font-size: 14px;
    }
    .ByZTit p {
        font-size: 28px;
    }
        .ByTit {
        font-size: 24px;
    }
    .ByJt svg {
    width: 40px;
    height: 40px;}
    .ByTop {
    padding: 30px 0;}
    .navItem {
            font-size: 14px;
    width: 45px;
    height: 45px;}
    .navBox {
    margin-top: 30px;
}
.byNavXl a {
    font-size: 16px;}
    .byNavText p {
    font-size: 18px;}
    .byNavText svg {
    width: 16px;
    height: 16px;
}
.byNavText {
    width: 160px;
    height: 70px;}
        .ByZText p {
        font-size: 14px;
    }
    .ByZText.ByZText_Top{
        margin: 20px 0 30px;
    }
        .ByBan {
        height: 400px;
    }
}

@media (max-width: 500px) {
        .ByBan {
        height: 300px;
    }
    .ByZTit p {
        font-size: 22px;
    }
        .ByTit {
        font-size: 22px;
    }
        .ByJt svg {
        width: 35px;
        height: 35px;
    }
       .ByZText h4 {
        font-size: 18px;}
              .navItem {
                margin: 0 3px;
    width: 40px;
    height: 40px;}
}