.nav {
  position: fixed;
  z-index: 1000;
  box-sizing: border-box;
  top: 0;
  width: 100%;
  height: 60px;
  min-width: 1300px;
}
.nav::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 60px;
  background: #fff;
  top: -120%;
  left: 0;
  transition: all 0.8s ease;
  z-index: -1;
}
.nav.on::after {
  top: 0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
.nav .nav-main {
  width: 1200px;
  margin: 0 auto;
}
.nav .nav-main .nav-left {
  float: left;
  margin: 10px 0;
  display: inline-block;
  width: 152px;
  height: 38px;
  margin-right: 214px;
  background-image: url("../images/pic-asologo@2x.png")/*tpa=https://aso.youmi.net/images/pic-asologo@2x.png*/;
  background-size: 100% 100%;
}
.nav .nav-main .nav-right {
  float: right;
}
.nav .nav-main .nav-right li {
  display: inline-block;
  height: 28px;
  line-height: 28px;
  margin-left: 24px;
  padding: 0 10px;
}
.nav .nav-main .nav-right li:first-child {
  margin-left: 0;
}
.nav .nav-main .nav-right li .item {
  color: #ffffff;
  text-decoration: none;
}
.nav .nav-main .nav-right li.apple {
  position: relative;
}
.nav .nav-main .nav-right li.apple .sub-nav-apple {
  width: 112px;
  padding: 0 2px;
  background: #ffffff;
  box-shadow: 0px 0px 4px 0px rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  position: absolute;
  top: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}
.nav .nav-main .nav-right li.apple .sub-nav-apple .sub-item {
  display: block;
  text-decoration: none;
  text-align: center;
  font-size: 16px;
  color: #303133;
  line-height: 33px;
}
.nav .nav-main .nav-right li.apple .sub-nav-apple .sub-item:hover {
  color: #6C63FF;
}
.nav .nav-main .nav-right li.apple .sub-nav-apple .sub-item img {
  vertical-align: sub;
  margin-right: 10px;
}
.nav .nav-main .nav-right li:hover .sub-nav-apple {
  display: unset;
}
.nav .nav-main .nav-right li.current {
  background: #9529fb;
  border-radius: 14px;
}
.nav .nav-main .nav-right li:hover {
  background: #9529fb;
  border-radius: 14px;
}
.nav.on .nav-main .nav-left {
  background-image: url("../images/pic-asologo-full/ color@2x.png")/*tpa=https://aso.youmi.net/images/pic-asologo-full/ color@2x.png*/;
}
.nav.on .nav-main .nav-right li .item {
  color: #303133;
}
.nav.on .nav-main .nav-right li.current .item,
.nav.on .nav-main .nav-right li:hover .item {
  color: #ffffff;
}