.header {
  width: 100%;
  min-width: 1050px;
  height: 300px;
  background-size: 100% 100%;
  background: #2F2C2D;
  opacity: 0.9;
  display: flex;
  justify-content: center;
  border-bottom: 4px solid #BC9B73;
}
.header-container {
  width: 1050px;
  height: 100%;
}
.header-container-logo {
  width: 283px;
  min-width: 283px;
  height: 75px;
  background-size: 100% 100%;
  margin: 39px 126px 0 0;
}
.header-container-nav {
  width: 100%;
}
.header-container-nav-search {
  width: 45px;
  height: 34px;
  background-color: rgba(188, 155, 115, 0.12);
  border-radius: 23px;
  border: 1px solid #644013;
  margin: 22px 0 25px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: width 0.2s ease-in-out;
  position: relative;
}
.header-container-nav-search:hover {
  width: 150px;
}
.header-container-nav-search:hover .header-container-nav-search-img {
  opacity: 0;
  z-index: -1;
}
.header-container-nav-search:hover .header-container-channel-nav-ipt {
  opacity: 1;
}
.header-container-nav-search:focus-within {
  width: 150px;
}
.header-container-nav-search:focus-within .header-container-nav-search-img {
  opacity: 0;
}
.header-container-nav-search-img {
  width: 22px;
  height: 22px;
  z-index: 1;
  transition: opacity 250ms ease-in-out;
}
.header-container-nav-navbar {
  display: flex;
  justify-content: space-between;
}
.header-container-nav-navbar > div {
  display: flex;
  flex-direction: column;
}
.header-container-nav-navbar-img {
  display: flex;
  justify-content: center;
}
.header-container-nav-navbar-tit {
  height: 20px;
  font-family: SourceHanSansSC, SourceHanSansSC;
  font-weight: 400;
  font-size: 15px;
  color: #FFFFFF;
  line-height: 29px;
  letter-spacing: 1px;
  font-style: normal;
  text-align: center;
  display: block;
}
.header-container-nav-navbar-tit:last-child {
  margin-right: 0;
}
.header-container-nav-navbar img {
  width: 32px;
  height: 10px;
  margin-top: 14px;
}
.header-container-channel {
  margin-top: 20px;
  color: #BC9B73;
  text-align: left;
  font-family: SourceHanSerifCN, SourceHanSerifCN;
}
.header-container-channel-tit {
  font-family: SourceHanSerifCN, SourceHanSerifCN;
  font-weight: bold;
  font-size: 27px;
  line-height: 51px;
  letter-spacing: 1px;
  white-space: nowrap;
  font-style: normal;
  display: flex;
  align-items: center;
}
.header-container-channel-tit-line {
  margin-left: 48px;
  width: 100%;
  border-top: 1px solid #BC9B73;
}
.header-container-channel-nav {
  display: flex;
  margin-top: 37px;
  gap: 72px;
}
.header-container-channel-nav-ipt {
  position: absolute;
  background: transparent;
  outline: none;
  border: none;
  height: 40px;
  width: calc(100% - 23px);
  margin-left: 13px;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  font-family: SourceHanSerifCN, SourceHanSerifCN;
  font-weight: 400;
  color: #BC9B73;
  line-height: 30px;
  letter-spacing: 1px;
}
.header-container-channel-nav-ipt:focus {
  opacity: 1;
}
.header-container-channel-nav > a {
  /*font-family: 'Source Han Serif', serif;*/
  font-weight: bold;
  font-size: 15px;
  color: #BC9B73;
  line-height: 29px;
  text-align: center;
  font-style: normal;
}
.header-container-channel-nav-checked {
  position: relative;
}
.header-container-channel-nav-checked::before {
  content: "";
  position: absolute;
  left: calc(50% - 18px);
  top: 16px;
  width: 0;
  height: 0;
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
  border-bottom: 18px solid #BC9B73;
}
.header-container-channel-nav-checked::after {
  content: "";
  position: absolute;
  left: calc(50% - 16px);
  top: 22px;
  width: 0;
  height: 0;
  border-left: 16px solid transparent;
  border-right: 16px solid transparent;
  border-bottom: 16px solid #ffffff;
}