@media screen and (max-width:767px) {

    /* 菜单按钮样式 */
    .menu-button {
        border: none;
        background: none;
        color: #6b7280;
        font-size: 20px;
        cursor: pointer;
    }

    /* 底部导航栏样式 */
    .bottom-nav {
        display: none !important;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 50px;
        background-color: white;
        border-top: 1px solid #e7e7e7;
        display: flex;
        justify-content: space-around;
        z-index: 100;
    }

    .nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        flex: 1;
        text-decoration: none;
        color: #888888;
    }

    .nav-item.active {
        color: #07C160;
        /* 微信绿 */
    }

    .nav-icon {
        width: 24px;
        height: 24px;
        background-size: contain;
        background-position: center;
        background-repeat: no-repeat;
    }

    .nav-label {
        font-size: 10px;
        margin-top: 2px;
    }

    /* 图标背景图 */
    .icon-home {
        background-image: url('../images/tabbar/index.png');
    }

    .icon-home.active {
        background-image: url('../images/tabbar/index_hover.png');
    }

    .icon-replace {
        background-image: url('../images/tabbar/replace.png');
    }

    .icon-replace.active {
        background-image: url('../images/tabbar/replace_hover.png');
    }

    .icon-pictext {
        background-image: url('../images/tabbar/pictext.png');
    }

    .icon-pictext.active {
        background-image: url('../images/tabbar/pictext_hover.png');
    }

    .icon-manual {
        background-image: url('../images/tabbar/pictext.png');
    }

    /* 自动和手动使用相同图标 */
    .icon-manual.active {
        background-image: url('../images/tabbar/pictext_hover.png');
    }

    /* 自动和手动使用相同图标 */

    .icon-my {
        background-image: url('../images/tabbar/my.png');
    }

    .icon-my.active {
        background-image: url('../images/tabbar/my_hover.png');
    }





    .mobile-items {
        padding: 10px 30px;
    }

    .mobile-items .item {
        display: block;
        padding: 0 20px;
        min-height: 62px;
        border-bottom: 1px solid #DCDCDC;
    }

    .mobile-items .item .name {
        height: 62px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: relative;
        font-weight: 500;
        font-size: 16px;
        color: #000000;
    }

    .mobile-items .item .name::after {
        content: '';
        width: 10px;
        height: 10px;
        border-top: 2px solid #000;
        border-right: 2px solid #000;
        transition: 0.3s;
        transform: rotate(45deg);
    }

    .mobile-items .item:hover .name::after {
        transform: rotate(135deg);
    }

    .mobile-items .item .sub-items .sub-item {
        transition: 0.3s;
        font-size: 12px;
        height: 0;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: space-between;
        color: #000;
        border-bottom: 0;
    }

    .mobile-items .item:hover .sub-items .sub-item {
        height: 50px;
        border-bottom: 1px solid #f5f5f5;
        text-decoration: none;
    }

    .footer,
    .footer a {
        text-decoration: none;
        color: #8B8B8B;
    }

    .footer {
        padding-bottom: 50px;
        box-shadow: 0 0 10px 3px #f5f5f5;
    }
}

.f_copyright,
.copyright-box {
    text-align: center;
}

.authentication,
authentication div {
    text-align: center;
}

.footer-bottom .description span {
    -webkit-transform: scale(0.75);
    margin-left: -6.2vw;
    display: inline-block
}

.flow-btns {
    position: fixed;
    z-index: 11;
    bottom: 5vh;
    right: 20px;
    display: flex
;
    flex-direction: column;
    gap: 20px;

}

.flow-btns .btn {
    cursor: pointer;
    user-select: none;
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
    border-radius: 50%;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    position: relative;
}

.flow-btns .btn:nth-child(1) {
    background-image: url(../images/service.png);
}
.flow-btns .btn::after{
    font-size: 12px;
    position: absolute;
    bottom: -1.2rem;
    text-align: center;
    width: 100%;
    left:0;
}
.flow-btns .btn:nth-child(1)::after{
    content:'Support';
    
    

}
.flow-btns .btn:nth-child(2)::after{
    content:'TOP';

    
}

.flow-btns .btn:nth-child(2) {
    background-image: url(../images/top.png);
}

@media screen and (min-width:768px) {


    .footer2024 {
        width: calc(1056px + 160px);
        margin: 0 auto;
        padding-top: 54px;
        padding-bottom: 77px;
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
    }

    .footer2024 .item .t1 {
        text-decoration: none;
        font-weight: bold;
        font-size: 20px;
        color: #000000;
        line-height: 23px;
        margin-bottom: 35px;
        cursor: pointer;
        text-align: left;
        transition: 0.5s;
        display: block;
    }

    .footer2024 .item .t1:hover,
    .footer2024 .item .t2:hover {
        transform: scale(1.1);
    }

    .footer2024 .item .t2 {
        text-decoration: none;
        display: block;
        text-align: left;

        font-weight: 400;
        font-size: 16px;
        color: #000000;
        line-height: 19px;
        margin-bottom: 10px;
        cursor: pointer;
        transition: 0.5s;
    }

    .footer2024 .qrcode {
        background-image: url(https://dandan2024-1304667790.cos.ap-guangzhou.myqcloud.com/images20231106pc/gzhewm.jpg);
        background-position: center;
        background-size: 100%;
        width: 80px;
        height: 80px;
    }

    .footer2024 .qrcode2 {
        position: absolute;
        background-image: url(../images/scan.jpg);
        background-position: center;
        background-size: 100%;
        width: 80px;
        height: 80px;
        margin-top: -80px;
        margin-left: 100px;
    }

    .footer2024 .qrcode,
    .footer2024 .qrcode2 {
        transition: 0.3s;
        z-index: 0;
    }

    .footer2024 .qrcode:hover,
    .footer2024 .qrcode2:hover {
        cursor: pointer;
        transform: scale(2) translateX(20px);
        z-index: 1;
    }

    .footer2024 .qrcode:hover~.qrcode2 {
        margin-left: 200px;
    }
}