.pc-header__fixed{
    position: fixed;
    left:50%;
    top:0;
    z-index:99;
    width:19.2rem;
    height: 0.97rem;
    margin-left:-9.6rem;
    background: url('../images/index/header/menu_bg.png') no-repeat;
    background-size:contain
}

.logo__top{
    position: absolute;
    left: 50%;
    top: 0.1rem;
    width:2rem;
    height: 0.6rem;
    margin-left: -4.7rem;
}
.logo__top img{
    display: none;
}

.menu__top{
    position: absolute;
    left: 50%;
    top:0;
    height: 0.78rem;
    margin-left: -1rem;
    zoom:1;
}

.menu__top:after{
    content:"";
    display: table;
    clear: both;
}

.menu-item__top{
    float: left;
    margin-right: 0.5rem;
}


.menu-item__top a{
    display:block;
    width: 1.16rem;
    height: 0.78rem;
    padding:0.06rem 0;
    overflow: hidden;
    box-sizing: border-box;
}

.menu-item__top.cur a,
.menu-item__top a:hover{
    background: url('../images/index/header/menu_hover.png') no-repeat;
    background-size:27.84rem 0.78rem;
    -webkit-animation: menu_bg_animate 2s steps(24) infinite;
     -moz-animation: menu_bg_animate 2s steps(24) infinite;
     -ms-animation: menu_bg_animate 2s steps(24) infinite;
     -o-animation: menu_bg_animate 2s steps(24) infinite;
    animation: menu_bg_animate 2s steps(24) infinite;
}



/* 顶部菜单高亮动画 */
@keyframes menu_bg_animate{
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -27.84rem 0;
    }
}
@-moz-keyframes menu_bg_animate{
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -27.84rem 0;
    }
}
@-webkit-keyframes menu_bg_animate{
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -27.84rem 0;
    }
}
@-ms-keyframes menu_bg_animate{
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -27.84rem 0;
    }
}
@-o-keyframes menu_bg_animate{
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: -27.84rem 0;
    }
}



.menu-item__top a span{
    display: none;
}

.menu-item__top a i{
    display: block;
    width: 0.7rem;
    height: 0.6rem;
    margin:0 auto;
    background: url('../images/index/header/header_menu.png') no-repeat;
    background-size:0.7rem 7.2rem;
}

.menu-item__top a.index_block{
    background-position: 0 0;
}
.menu-item__top.cur a.index_block i,
.menu-item__top a.index_block:hover i{
    background-position: 0 -0.6rem;
}

.menu-item__top a.live_block i{
    background-position: 0 -1.2rem;
}
.menu-item__top.cur a.live_block i,
.menu-item__top a.live_block:hover i{
    background-position: 0 -1.8rem;
}
.menu-item__top a.ws_block i{
    background-position: 0 -2.4rem;
}
.menu-item__top.cur a.ws_block i,
.menu-item__top a.ws_block:hover i{
    background-position: 0 -3rem;
}

.menu-item__top a.video_block i{
    background-position: 0 -6rem;
}
.menu-item__top.cur a.video_block i,
.menu-item__top a.video_block:hover i{
    background-position: 0 -6.6rem;
}

.menu-item__top a.video_block i{
}
.menu-item__top.cur a.video_block i,
.menu-item__top a.video_block:hover i{
}

.menu-item__top a.gm_block i{
    background-position: 0 -3.6rem;
}
.menu-item__top.cur a.gm_block i,
.menu-item__top a.gm_block:hover i{
    background-position: 0 -4.2rem;
}

.menu-item__top a.download_block i{
    background-position: 0 -4.8rem;
}
.menu-item__top.cur a.download_block i,
.menu-item__top a.download_block:hover i{
    background-position: 0 -5.4rem;
}

.menu-item__top a.hold_block{
    background: url('../images/index/header/icon_hold.png') no-repeat;
    background-size:contain

}

.top-scroll-info{
    position: absolute;
    top:0.78rem;
    left:50%;
    width: 100%;
    height: 0.40rem;
}