header {
  width: 100%;
  padding: 55px 0;
  position: absolute;
  top: 0;
  left: 0;
}
header .w {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .w .logo {
  width: 181px;
  height: 37px;
  display: block;
}
header .w nav {
  display: flex;
  align-items: center;
  flex: 1;
  padding: 5px 76px 0;
  box-sizing: border-box;
}
header .w nav .nav-item {
  font-size: 23px;
  letter-spacing: 0px;
  color: #ffffff;
  margin-right: 62px;
  font-weight: 300;
}
header .w nav .nav-item:hover {
  color: #1a43ce;
  font-weight: 500;
}
header .w nav .nav-item.active {
  color: #1a43ce;
  position: relative;
  font-weight: 500;
}
header .w nav .active::after {
  content: '';
  position: absolute;
  bottom: -13px;
  left: 50%;
  transform: translate(-50%, 0);
  width: 47px;
  height: 5px;
  background-color: #1a43ce;
  border-radius: 2px;
}
header .w .lang-content {
  width: 164px;
  height: 38px;
  border-radius: 19px;
  border: solid 1px #ffffff;
  display: flex;
  align-items: center;
  padding: 0 19px;
  box-sizing: border-box;
}
header .w .lang-content .lang-icon {
  width: 17px;
  height: 18px;
  flex-shrink: 0;
  min-width: 0;
}
header .w .lang-content .jt-icon {
  width: 9px;
  height: 7px;
  flex-shrink: 0;
  min-width: 0;
}
header .w .lang-content select {
  flex: 1;
  outline: none;
  width: 100px;
  box-sizing: border-box;
  padding: 0 6px 0 12px;
  background: transparent;
  color: #fff;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}
header .w .lang-content select option {
  color: #333;
}