* {
    padding: 0;
    margin: 0;
}
body{
    font-family: Source Han Sans CN,Microsoft YaHei,PingFang SC, Arial, Helvetica, Helvetica Neue;
}
a {
    text-decoration: none;
}
li{
    list-style-type: none;
}




.nav{
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 101;
    background: rgba(255, 255, 255, 0);
    /* background:aqua; */
    transition: all 1s;
}
.nav:hover {
    background-color: #fff;
}
.nav_top{
    height: 108px;
    max-width: 1440px;
    width: 100%;
    box-sizing: border-box;
    padding: 0 60px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav_top:hover > .nav_logo{
    background-image: url("../assets/logo.png");
 }
 .nav_top:hover > .nav_right>ul>li{
    color: #333;
 }
.nav_logo{
    display: block;
    height: 64px;
    width: 140px;
    background-image: url("../assets/logo_white.png");
    background-position: center;
    background-size: cover;
    cursor: pointer;
}
.nav_right{
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav_right>ul{
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-right: 112px;
}
.nav_right>ul>li{
    font-size: 16px;
    /* font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI; */
    font-weight: 400;
    /* color: #333333; */
    color: #fff;
    margin-left: 48px;
    cursor: pointer;
    position: relative;
    height: 100%;
    line-height: 108px;
   
}

.nav_right>ul>li:hover{
    font-weight: 600;
    color: #CB1720 !important;
   
}
.nav_right>ul>li::after{
    content: "";
    display: block;
    position: absolute;
    height: 2px;
    width: 100%;
    top: 75%;
    background-color: transparent;
}

.nav_right>ul>li:hover:after{

    background-color: #CB1720;
}
.submenu_div{
    position: absolute;
    background-color: #fff;
    padding: 0 0px 16px;
    min-width:210px ;
    left: -100%;
    box-sizing: border-box;
    box-shadow: 0px 8px 20px 0px rgba(0,0,0,0.08);

}
.nav_right>ul>li:hover .submenu_div{
    display: block;
}

.submenu li{
    font-size: 14px;
    /* font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI; */
    font-weight: 400;
    color: #333333;
    line-height: 16px;
    padding: 16px 16px 0;
}
.submenu li:hover{
    font-size: 14px;
    /* font-family: Microsoft YaHei UI-Semibold, Microsoft YaHei UI; */
    font-weight: 600;
    color: #CB1720;
    line-height: 16px;   
}

.submenu3 {
    min-width: 88px;
    left: 0%;
    
}
.submenu2, .submenu3{
  display: none;
}
.submenu2:hover {
    display: block;
}

.submenu3:hover {
    display: block;
}

.tuozhan_li_ul{
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 110px;
    
}
.tuozhan_li_ul:hover{
    display: block;
}
.tuozhan_li_ul ul{
    padding: 0px 0px 80px;
    background-color: #fff;
    width: 100%;
    box-sizing: border-box;
    height: 100%;
    border-left: 1px solid #F5F6F7;

}
.tuozhan_li_ul li{
    font-size: 14px;
    /* font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI; */
    font-weight: 400;
    color: #333333;
    line-height: 16px;   
}
.tuozhan_li:hover .tuozhan_li_ul{
    display: block;
}


.search_div{
    position: relative;
    line-height: 28px;
    height: 36px;
    cursor: pointer;
    box-sizing: border-box;
}
.search_input{
    height: 36px;
    box-shadow: 0px 8px 28px 0px rgba(0,0,0,0.12);
    position: absolute;
    height: 100%;
    top: 0px;
    right: 0px;
    border: none;
    padding: 10px;
    box-sizing: border-box;
    font-size: 12px;
    /* font-family: Microsoft YaHei-Regular, Microsoft YaHei; */
    font-weight: 400;
    color: #999999;
    line-height: 14px;
    width: 40px;
    transition: 1s all;
    z-index: 100;
    background: rgba(255, 255, 255, 0);
    border-radius: 0px;
    opacity: 0;
}
.search_input:focus {
    width: 188px;
    background-color: #fff;
    z-index: 0;
    box-shadow: 0px 8px 28px 0px rgba(0,0,0,0.12);
    margin-right: 40px;
    border-color:#fff;
    outline: none;
    opacity: 1;
  }
.secrch_btn{
    /* background-color: #fff;
    padding: 4px 10px; */

    padding: 0px 10px;
    background: #CB1720;
    position: absolute;
    top: 0px;
    right: 0px;
    height: 100%;
}
.secrch_btn img{
    width: 20px;
    height: 20px;
    display: block;
    margin: 0 auto;
    padding: 8px 0;
}

.nav_right_mobile{
    display: none;
}
.mask{
   display: none;
}











@keyframes off_page_show {
    0% {
        opacity: 0;
        transform: translateX(-30%);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@media screen and (-webkit-device-pixel-ratio: 3) and (max-device-width: 1171px) {

}

@media screen and (max-width: 1081px) {
    .nav {
        height: 68px;
        background-color: #fff;
        box-shadow: 0px 4px 16px 0px rgba(0,0,0,0.04);
        top: 0px;
        transition: right 500ms cubic-bezier(0.77, 0, 0.175, 1);
        
    }

    .nav_top {
        height: 100%;
        padding: 0 20px;
    }

    .nav_logo {
        width: 110px;
        height: 50px;
        background-image: url("../assets/logo.png");
        background-repeat: no-repeat;
        background-position: left top;
    }

    .nav_right {
        display: none;
    }

    .nav_right_mobile {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 100%;
    }

    .nav_right_mobile .secrch_btn {
        background-color: #fff !important;
    }

    .nav_right_mobile .search_input {
        box-shadow: none;
    }
    .nav_right_mobile .search_input:focus-within{
        width: 130px;
        box-shadow: 0px 8px 28px 0px rgba(0,0,0,0.12);
    }
    .nav_right_mobile .mobile_img {
        display: inline-block;
        width: 32px;
        height: 28px;
        padding-left: 20px;

    }
    .nav_right_mobile .mobile_img img{
        display: block;
        width: 100%;
        height: 100%;

    }

    /* 移动端遮罩 */
    .mask {
        display: block;
        position: fixed;
        width: 260px;
        height: 100%;
        /* left: 0; */
        right: -260px;
        top: 0;
        /* bottom: 0; */
        background: #fff;
        z-index: 500;
        /* -webkit-animation: off_page_show 0.3s ease-out 0s both;
        animation: off_page_show 0.3s ease-out 0s both; */
        transition: right 500ms cubic-bezier(0.77, 0, 0.175, 1);
        overflow-y: auto;
    }
    .mask >ul{
        padding: 0px 24px;
    }
    .mask >ul >li{
        font-size: 16px;
        font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI;
        font-weight: 400;
        color: #333333;
        line-height: 24px;
        border-bottom: 1px solid #EEEEEE;
        padding: 20px 0;
    }
    .mask >ul >li p{
        /* display: inline-block; */
        position: relative;
        
    }
    .mask >ul >li span::after{
        content: "";
        display: block;
        width: 8px;
        height: 8px;
        border-left:2px solid #666666;
        border-bottom:2px solid #666666;
        transform: rotate(315deg);
        -webkit-transform: rotate(315deg);
        position: absolute;
        top: 20%;
        right: 0;
        transition:all 1s ;
    }
    .mask >ul >li .afterspan::after{
        content: "";
        display: block;
        width: 8px;
        height: 8px;
        border-left:2px solid #666666;
        border-bottom:2px solid #666666;
        transform: rotate(135deg);
        -webkit-transform: rotate(135deg);
        transition:all 1s ;
        position: absolute;
        top: 20%;
        right: 0;
    }
    .mobile_show_btn{
        display: none;
    }
    .mobile_show_btn ul li{
        font-size: 16px;
        font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI;
        font-weight: 400;
        color: #333333;
        line-height: 24px;
        padding-top: 20px;
    }
    .mobile_tuozhang{
        font-size: 14px;
        font-family: Microsoft YaHei UI-Regular, Microsoft YaHei UI;
        font-weight: 400;
        color: #666666;
        line-height: 20px;
        padding-left: 16px;  
        padding-top: 16px;      
    }
}

.nav.active{
    background-color: #fff;
}
.nav.active .nav_top > .nav_logo{
    background-image: url("../assets/logo.png");
}
.nav.active .nav_top > .nav_right>ul>li{
    color: #333;
}
.jiushiEvent_head .nav.active .nav_right>ul>li:nth-child(2){
    color: #CB1720 !important;
}