.header {
  position: sticky;
  top: 0;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25rem 190rem;
  background: #ffffff;
}

.header-logo {
  display: flex;
  align-items: center;
  display: flex;
  align-items: center;
}

.header-logo-icon {
  width: 34rem;
  height: 34rem;
  border-radius: 34rem;
}

.header-logo-text {
  margin-left: 6rem;
  font-size: 24rem;
  font-weight: 500;
  line-height: 24rem;
  letter-spacing: 0rem;
  color: #23272a;
}

.tabs {
  display: flex;
  align-items: center;
}

.tab-item {
  margin-right: 100rem;
  font-size: 22rem;
  font-weight: 600;
  line-height: 28.08rem;
  letter-spacing: 0rem;
  font-family: Alibaba PuHuiTi 3;
  color: #23272a;
  cursor: pointer;
}

.tab-item:last-child {
  margin-right: 0;
}

.header-chat {
  padding: 10rem 0;
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.header-chat-icon {
  width: 32rem;
  height: 32rem;
}

.header-chat-text {
  margin-left: 2.5rem;
  font-family: Alibaba PuHuiTi 3;
  font-size: 18rem;
  font-weight: bold;
  line-height: 18rem;
  font-variation-settings: "opsz" auto;
  color: #23272a;
}

.header-chat:hover .header-chat-qcode {
  top: calc(100% + 20rem);
  opacity: 1;
}

.header-chat-qcode {
  position: absolute;
  top: 20rem;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  width: 215rem;
  height: 215rem;
  border-radius: 8rem;
  background-color: #ffffff;
  transition: all 0.3s ease-in-out 0.1s;
}