* {
  margin: 0;
  padding: 0;
}

.header_box {
  width: 100%;
  position: absolute;
  top: 0;
  z-index: 10;
  padding: calc(7px + 0.5rem) 0;
  background: rgba(0, 0, 0, 0.2);
}

.header {
  max-width: 1812px;
  width: 90%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}


.header_logo {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.header_logo div {
  width: calc(24px + 10rem);
  height: calc(18px + 2rem);
  background: #FFFFFF;
}

.header_right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.header_nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: calc(12px + 3rem);
}

.header_nav_item {
  font-family: Alibaba PuHuiTi 2.0, Alibaba PuHuiTi 20;
  font-weight: 500;
  font-size: calc(8px + 0.5rem);
  color: #FFFFFF;
  line-height: calc(5px + 1rem);
}

.header_right .search {
  width: calc(8px + 0.5rem);
  margin-left: calc(20px + 3rem);
}

.header_right .line {
  width: 1px;
  height: calc(2px + 1rem);
  background: #D8D8D8;
  margin-left: calc(4px + 1rem);
}

.header_right .lang{
font-family: PingFangSC, PingFang SC;
font-weight: 400;
font-size: calc(8px + 0.5rem);
color: #FFFFFF;
line-height: calc(5px + 1rem);
margin-left: calc(4px + 1rem);
}