.headdiv{
    width: 100%;
    height: 10%;
    background-color: #120b1f;
}
body{
    margin: 0;
    padding: 0;
}
.maindiv{
    width: 100%;
    height: 100vh;
}

.back{
    width: 20%;
    height: 10%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 100;
}
.backimg{
    position: absolute;
    width: 100%;
    height: 90%;
    overflow: hidden;
    z-index: -1;
}
.backimg img{
    width: 100%;
}
.logo{
    width: 8%;
    position: absolute;
    top: 3%;
    left: 5%;
}
.logo img{
    width: 100%;
}
.menu{
    width: 30%;
    position: absolute;
    top: 4%;
    right: 5%;
    display: flex;
    z-index: 999;
    text-align: center;
}
.menu-item{
    width: 25%;
    color: #ffffff;
    font-family: "黑体";
}

.menu-item1{
    width: 25%;
    color: #009ce5;
    font-family: "黑体";

}

.menu-item1:hover{
    color: #ffffff;
}
.menu-item:hover{
    color: #009ce5;
}

a{
    text-decoration: none;
}

.casediv{
    position: absolute;
    width: 100%;
    height: 80%;
    overflow: hidden;
    display: flex;
}
.swiper-container {
    height: 85%;
    width: 100%;
    overflow: visible;
    align-self: center;
}
.swiper-wrapper{
    height: 100%;

}
.swiper-container .swiper-wrapper .swiper-slide{
    width: 25%;
    display: flex;

}
.swiper-container .swiper-wrapper .swiper-slide img{
    width: 100%;
    align-self: center;
}

.swiper-container .swiper-wrapper .swiper-slide-active{
    width: 25%;
    display: flex;
}

.swiper-container .swiper-wrapper .swiper-slide-active img{
    width: 100%;
    align-self: center;
}

.back-shadow{
    display: none;
    width: 100%;
    position: absolute;
    height: 0;
    align-self: center;
    padding-bottom: 135%;
    opacity: 0.7;
    background-color: #000000;
}

.swiper-slide:hover .back-shadow {
    display: block;
    cursor: pointer;
}


.shadow-text{
    color: #ffffff;
    font-size: 20px;
    text-align: center;
    margin-top: 80%;
}

.shadow-text span{
    border: 1px solid #ffffff;
    padding: 10px 20px ;
}
.shadow-text a{
    color: #ffffff;
}

.case-list{
    width: 100%;
    overflow: hidden;
}
.case-list-back{
    position: absolute;
    width: 100%;
    overflow: hidden;
    z-index: 99;
    top: 100px;
}
.case-item1{
    width: 98%;
    display: block;
    margin: 30px 1% 30px 1%;
}
.case-item2{
    width: 100%;
    display: flex;
    margin: 0 1% 10px 1%;
}
.case-item21{
    width: 48.5%;
}
.case-item-blank{
    width: 1%;
}
.case-list img{
    display: block;
    width: 100%;
}

.bottom{
    position: fixed;
    bottom: 0;
    background-color: #120b1f;
    width: 100%;
    text-align: center;
    height: 10%;
    display:table;
}
.bottom a{
    color: #7a7a7a;
    font-size: 13px;
    text-decoration: none;
    vertical-align:middle;
    display:table-cell;
}
.beian{
    bottom: 0;
    background-color: #120b1f;
    width: 100%;
    text-align: center;
    height: 10%;
    display:table;
}
.beian a{
    color: #7a7a7a;
    font-size: 13px;
    text-decoration: none;
    vertical-align:middle;
    display:table-cell;
}
.menu-icon{
    display: none;
}
.mobile-menu-list{
    display: none;
}
@media screen and (max-width: 750px) {
    .back{
        display: none;
    }

    .logoback{
        display: none;
    }
    .logo{
        width: 30%;
        position: absolute;
        top: 2%;
        left: 5%;
        z-index: 99
    }
    .menu{
        display: none;
    }
    .menu-icon{
        display: block;
        width: 20%;
        position: absolute;
        top: 2%;
        right: 3%;
        z-index: 999;
        text-align: center;
        font-size: 12px;
    }
    .menu-icon-img{
        width: 40%;
        margin-left: 30%;
    }
    .menu-icon img{
        width: 100%;
    }
    .mobile-menu-list{
        display: none;
        width: 20%;
        position: absolute;
        top: 7%;
        right: 3%;
        z-index: 999;
        text-align: center;
        font-size: 16px;
        background-color: #120b1f;
        padding-bottom: 15px;
    }
    .mobile-menu-item{
        display: block;
        line-height: 35px;
        color: #ffffff;
    }

    .swiper-container .swiper-wrapper .swiper-slide{
        width: 80%;
        display: flex;
    }
    .headdiv{
         width: 100%;
         height: 8%;
         background-color: #120b1f;
     }
    .bottom{
        position: fixed;
        bottom: 0;
        background-color: #120b1f;
        width: 100%;
        text-align: center;
        height: 8%;
        display:table;
        line-height:  8%;
    }
    .bottom a{
        color: #4e375a;
        font-size: 11px;
        text-decoration: none;
        vertical-align:middle;
        display:table-cell;
    }
    .beian{
        bottom: 0;
        background-color: #120b1f;
        width: 100%;
        text-align: center;
        height: 7%;
        display:table;
    }
    .beian a{
        color: #4e375a;
        font-size: 11px;
        text-decoration: none;
        vertical-align:middle;
        display:table-cell;
    }
    .case-list-back{
        display: none;
    }

    .case-item1{
        width: 98%;
        display: block;
        margin: 10px 1% 10px 1%;
    }
	
	.backimg{
        display: none;
    }
}