.no-webp .top-nav {background:url(https://tym.res.netease.com/pc/gw/20230530154301/img/nav-bg_26a0cb76.png) no-repeat;
  background-size: 100% 100%}
.webp .top-nav {background:url(https://tym.res.netease.com/pc/gw/20230530154301/img/nav-bg_26a0cb76.webp) no-repeat;
  background-size: 100% 100%}
.no-webp .top-nav {background-size:100% 100%}
.webp .top-nav {background-size:100% 100%}
.top-nav {
  position: absolute;
  z-index: 99;
  width: 100%;
  height: 78px;
  overflow-x: hidden;
}
.no-webp .top-nav .logo {background:url(https://tym.res.netease.com/pc/gw/20230530154301/img/logo_3cb55719.png) no-repeat}
.webp .top-nav .logo {background:url(https://tym.res.netease.com/pc/gw/20230530154301/img/logo_3cb55719.webp) no-repeat}
.top-nav .logo {
  width: 139px;
  height: 49px;
  position: absolute;
  left: 20px;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  pointer-events: none;
  font-size: 0;
}
.top-nav .nav-links {
  position: relative;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  text-align: center;
  font-size: 20px;
  color: #e0e7ee;
  padding-left: 150px;
}
.top-nav .nav-links .nav-link {
  position: relative;
  margin-right: 50px;
  display: block;
  letter-spacing: 2px;
}
.no-webp .top-nav .nav-links .nav-link::after {background:#fff}
.webp .top-nav .nav-links .nav-link::after {background:#fff}
.top-nav .nav-links .nav-link::after {
  content: '';
  display: block;
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  width: 0;
  height: 2px;
  margin-top: 5px;
  -webkit-transition: width 0.5s;
  transition: width 0.5s;
}
.top-nav .nav-links .nav-link:hover,
.top-nav .nav-links .nav-link.active {
  color: #fff;
}
.top-nav .nav-links .nav-link:hover::after,
.top-nav .nav-links .nav-link.active::after {
  width: 100%;
}