.hqa49O{position:relative}._2entjy{position:fixed;top:0;left:0;right:0;z-index:10;height:.04167rem;background-color:#141414}._15wnFm{top:0;width:.14896rem;height:.04167rem;margin-left:-.3125rem;background:url(/page/a-level-user-guide/css/img/cf83fcac.png) no-repeat 0;background-size:contain}._1lwwDj,._15wnFm{display:block;position:absolute;left:50%}._1lwwDj{top:.00833rem;width:.075rem;height:.025rem;margin-left:.2375rem;background:url(/page/a-level-user-guide/css/img/bd4bb2ff.png) no-repeat 0;background-size:contain}._2entjy ul{position:absolute;top:0;left:50%;width:.29167rem;margin:0 0 0 -.13854rem;padding:0}._2entjy ul li{float:left;display:block;list-style:none}._2entjy ul li a{position:relative;display:block;padding:.0125rem;font-size:.00938rem;color:#fff;line-height:.01667rem;text-decoration:none}._2entjy ul li a:hover,._2entjy ul li a[data-active=true]{font-weight:700}._2entjy ul li a:hover:before,._2entjy ul li a[data-active=true]:before{content:"";display:block;position:absolute;bottom:.00729rem;left:50%;width:.00208rem;height:.00208rem;margin-left:-.00104rem;border-radius:50%;background-color:#e13746}@media screen and (max-width:1200px){._15wnFm{margin-left:-.25rem}._1lwwDj{margin-left:.175rem}._2entjy ul{width:.25rem;margin-left:-.11771rem}}@media screen and (max-width:960px){._15wnFm{margin-left:-.19792rem}._1lwwDj{margin-left:.12292rem}._2entjy ul{width:.20833rem;margin-left:-.09688rem}}
._2yq2wW,._3Ah0kb{position:relative}._2yq2wW{height:.14167rem;background-color:#141414}._1gmXVK{display:block;top:.02083rem;width:.14896rem;height:.04167rem;background:url(/page/a-level-user-guide/css/img/cf83fcac.png) no-repeat 0;background-size:contain}._1gmXVK,.cmT0JM{position:absolute;left:50%;margin-left:-.3125rem}.cmT0JM{top:.09688rem;width:.15625rem;padding-left:.05625rem;font-family:Arial;font-weight:400;font-size:.00833rem;line-height:.01667rem;text-align:left;color:#fff}._2-qW-j,._2r_ved,._27yG_7{position:absolute;top:0;left:0;display:block;width:.0125rem;height:.0125rem;background:url(/page/a-level-user-guide/css/img/6434a283.png) no-repeat 50%;background-size:contain}._27yG_7{left:.01875rem;background:url(/page/a-level-user-guide/css/img/cd5f0e12.png) no-repeat 50%;background-size:contain}._2r_ved{left:.0375rem;background:url(/page/a-level-user-guide/css/img/b211d562.png) no-repeat 50%;background-size:contain}._9kc8jg{position:absolute;top:.03021rem;left:50%;margin-left:.2375rem;font-family:Arial;font-weight:400;font-size:.01042rem;color:#fff;line-height:.01667rem}._1cYrOc{display:block;top:.04635rem;margin-left:.225rem;width:.0875rem;height:.02917rem;background:url(/page/a-level-user-guide/css/img/1dc8c8ca.png) no-repeat 0;background-size:contain}._1cYrOc,._3EzWMD{position:absolute;left:50%}._3EzWMD{top:.08229rem;padding-left:.02083rem;background:url(/page/a-level-user-guide/css/img/d0289dc0.jpg) no-repeat 0;background-size:contain}._3-mptC,._3EzWMD{margin-left:.1625rem;width:.15rem;font-family:Arial;font-weight:400;font-size:.00833rem;font-style:normal;color:#7b7b7b;line-height:.01667rem}._3-mptC{display:inline-block;position:absolute;top:.09844rem;left:50%}

body,html{margin:0;padding:0;font-family:Monospace Number,Chinese Quote,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif}html{overflow:hidden;position:relative;width:100%;height:100%}body{overflow:auto;-webkit-overflow-scrolling:touch;position:absolute;top:0;bottom:0;left:0;right:0}