body {
  font-family: SourceHanSansSC;
  background-color: #fff;
}

.header {
  padding: 0 70px;
  height: 80px;
}

.top {
  height: 80px;
}

.logo {
  float: left;
  padding-top: 16px;
}

.nav {
  float: right;
  font-size: 16px;
  font-family: PingFang SC;
  font-weight: 500;
  color: #363636;
}

.nav>a {
  position: relative;
  margin-right: 65px;
  cursor: pointer;
  color: #363636;
  font-size: 16px;
  line-height: 80px;
  display: inline-block;
}

.nav>a:hover {
  color: #A40000;
}

.group1:hover .more-box {
  display: block;
}

.nav>a.active {
  color: #A40000;
  border-bottom: 1px solid #A40000;
}

.more-box {
  display: none;
  position: absolute;
  top: 70px;
  left: -40px;
  background-color: #fff;
}

.more-box a {
  display: block;
  font-size: 16px;
  color: #363636;
  line-height: 3;
  width: 160px;
  text-align: center;
  border-bottom: 1px solid #ccc;
}

.more-box a:hover {
  background-color: #A40000;
  color: #fff;
}

.more-box a {
  color: #363636;
  font-size: 16px;
}

.more-box a.active {
  background-color: #A40000;
  color: #fff;
}