.navTop{height:var(--navTopHeight)}.navTop.noFixed .navback{position:relative}.navTop .navback{background-color:#fff;display:flex;height:var(--navTopHeight);left:0;position:fixed;right:0;top:0;z-index:2}.navTop .navback .left,.navTop .navback .right{width:1rem}.navTop .navback .back{display:inline-block;font-size:.34rem;height:1rem;line-height:320%;overflow:hidden;text-align:center;width:.88rem}.navTop .navback .title{color:#000;display:flex;flex:1;flex-direction:column;font-size:.36rem;font-weight:700;text-align:center}.navTop .navback .title:after,.navTop .navback .title:before{content:"";display:block;flex:1;height:1%}.navTop .chooser{display:flex;width:100%}.navTop .chooser:after,.navTop .chooser:before{content:"";display:block;flex:1;width:1%}.navTop .chooser a{border-radius:.1rem;color:#3a3a41;display:block;font-size:.32rem;font-size:.34rem;line-height:1rem;margin-right:.1rem;padding:0 .1rem;position:relative;text-align:center;white-space:nowrap}.navTop .chooser a:last-child{margin-right:0}.navTop .chooser a.hot{color:#000;font-weight:700}.navTop .chooser a.hot:before{left:calc(50% - .5rem);width:1rem}.navTop .chooser a:before{background-color:#f00a0c;bottom:.1rem;content:"";height:.08rem;left:50%;position:absolute;transition:all .3s ease-in-out;width:0}