/*该样式适用于通用的页头和页尾*/
/*头部公共样式*/
.header {
    width: 100%;
    height: 64px;
    border-bottom: 1px solid #cdcdcd;
    /*margin-bottom: 24px;*/
    background: white;
    position: sticky;
    top: 0px;
    z-index: 999;

}

.header_null_margin {
    margin-bottom: 0px;
}

.header_null_bg {
    position: fixed;
    height: 64px;
    top: 0;
    background-color: white;
    /* background: transparent;  初始背景色为透明 */
    transition: background-color 0.3s; /* 平滑过渡效果 */
}

a {
    color: #333333;
}

a:hover {
    color: #0045ff;
}

.header_content {
    width: 1176px;
    height: 64px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.left_logo {

}

.menu_list {
    height: 64px;
    line-height: 64px;
    color: #333;
    font-family: "Source Han Sans CN";
    font-size: 16px;
    font-style: normal;
    display: flex;
    align-items: center;
    font-weight: 400;
}

.menu_list img {
    margin-left: 8px;
}

.menu_list_item {
    max-width: 90px;
    height: 64px;
    line-height: 64px;
    margin-left: 36px;
    cursor: pointer;
    overflow: hidden;
    display: block;
}

.menu_list_item span {
    display: flex;
    align-items: center;
    cursor: pointer
}

.mli_list {
    width: 118px;
    padding: 4px 2px;
    border-radius: 4px;
    background: #fff;
    z-index: 999;
    box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
}

.menu_list_item:hover {
    overflow: visible;
}

.menu_list_item:hover .mli_list {
    margin-top: -2px;
}


.mli_list_item {
    width: 100%;
    height: 36px;
    line-height: 36px;
    text-align: center;
    margin: 2px 0px;
    color: #333;
    font-family: "Source Han Sans CN";
    font-size: 16px;
    font-weight: 400;
    border-radius: 4px;
    cursor: pointer;
}

.mli_list_item:last-child {
    margin-bottom: 0px;
}

.mli_list_item a{
    display: inline-block;
    width: 100%;
}

a:hover {
    color: #333;
}

a:focus {
    color: #0045ff;
}

.mli_list_item:hover {
    background: #edf0f5;
    color: #333;
}

.mli_list_item:focus {
    background: #d8e0ee;
    color: #0045ff;
}

.lang_item {
    height: 64px;
    line-height: 64px;
    overflow: hidden;
    visibility: hidden;
}

.lang_item:hover {
    overflow: visible;
}

.lang_item:hover .mli_list {
    margin-top: -2px;
}


.lang_item span {
    display: flex;
    align-items: center;
    cursor: pointer
}

.lang img {
    margin-left: 8px;
}

/*用来控制头部菜单式隐藏还是显示*/
.show {
    display: block;
}

/*以下是底部公共样式*/
.footer {
    width: 100%;
    background: #F6F6F6;
    padding: 60px 0px 18px;
    margin: 36px 0px 81px;
}

.foot_link {
    width: 67.25%;
    min-width: 712px;
    margin: auto;
    display: flex;
    justify-content: space-between;

}

.footer_img {
    width: 20%;
    text-align: center;
    display: flex;
    align-items: center;
}

.footer_img img {
    width: 120px;
    height: 120px;
    margin: auto;
}

.footer_item {
    width: 20%;
    border-left: #CDCDCD solid 1px;
    text-align: center;
}

.footer_item h4 {
    color: #333;
    font-family: "Source Han Sans CN";
    font-size: 22px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    margin-bottom: 24px;
}

.footer_item_a {
    margin-bottom: 12px;
}

.footer_item a {
    color: #666;
    font-family: "Source Han Sans CN";
    font-size: 14px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
}

.footer_item a:hover {
    color: #3485FF;
}

.footer_item a:focus {
    color: #0050C8;
}

.version_number {
    color: #666;
    text-align: center;
    font-family: "Source Han Sans CN";
    font-size: 15px;
    font-style: normal;
    font-weight: 400;
    line-height: 30px;
    margin-top: 60px;
}

/*底部固定位置banner图*/
.banner_bottom {
    width: 100%;
    height: 81px;
    position: fixed;
    bottom: 0px;
    left: 0px;
    z-index: 999;
}

.banner_bottom img {
    width: 100%;
    height: 81px;
}