.header {
    /* width: 19.2rem;  */
    width: 100%;
    height: 0.75rem;
    /* 75px */
    position: absolute;
    top: 0;
    left: 0;
    left: 50%;
    transform: translateX(-50%);
    transition: top 0s ease;
    z-index: 9100024;
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavBg.png') no-repeat;
    background-size: cover;
}

.header_top {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.16rem;
    height: 0.75rem;
    position: relative;
    box-sizing: border-box;

}

.logo_nav {
    width: 0.82rem;
    height: 0.56rem;
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavLogo.png') no-repeat;
    background-size: contain;
}

.header_nav {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    height: 0.75rem;
}

.header_nav_item {
    width: 1.7rem;
    line-height: 0.36rem;
    font-family: 'MyFont', tahoma, '\5FAE\8F6F\96C5\9ED1', sans-serif;
    font-size: 0.22rem;
    font-weight: normal;
    color: #fff;
    text-align: center;
    cursor: pointer;
    transition: color 0.3s, filter 0.3s;
    white-space: nowrap;
    border-right: 0.02rem solid #354064;
    /* animation: nav-item-glow 2.4s ease-in-out infinite; */
    text-shadow:
        0 0 0.03rem rgba(140, 215, 255, 0.5),
        0 0 0.05rem rgba(110, 195, 255, 0.42),
        0 0 0.1rem rgba(85, 175, 255, 0.26),
        0 0 0.15rem rgba(65, 155, 255, 0.14);
}

.header_nav_item_active,
.header_nav_item:hover {
    color: #aaecff;
    animation: none;
    /* text-shadow:
        0 0 0.06rem rgba(255, 255, 255, 0.85),
        0 0 0.12rem rgba(200, 235, 255, 0.65),
        0 0 0.2rem rgba(160, 220, 255, 0.45); */
}

.btn_toshare {
    width: 0.52rem;
    height: 0.52rem;
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavHome.png') no-repeat;
    background-size: contain;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0.9rem;
}

.top_bgm {
    width: 0.52rem;
    height: 0.52rem;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0.4rem;
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavMusic.png') no-repeat;
    background-size: 1.14rem 0.52rem;
}

.top_bgm_on {
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavMusic.png') no-repeat right center;
    background-size: 1.14rem 0.52rem;
}

.top_bgm_off {
    background: url('https://static.web.sdo.com/mxdc/pic/project/20261015awakening/pc/topNavMusic.png') no-repeat left center;
    background-size: 1.14rem 0.52rem;
}


/* .btn_download {
    width: 1.45rem;
    height: 0.48rem;
    background: url(https://static.web.sdo.com/mxd/pic/mxdc_act/cv001/pc/btn_download.png) no-repeat;
    background-size: contain;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0.1rem;
} */

.btn-Sign {
    width: 1.9rem;
    height: 0.57rem;

    position: absolute;
    /* bottom: 0;
    right: 0; */
    top: 50%;
    transform: translateY(-50%);
    right: 0.05rem;
    background: url(../img/btn-Sign.png) no-repeat;
    background-size: contain;
}

.header.hide {
    display: none;
}