.header {
  position: relative;
  overflow: hidden;
}
.header .top-bg {
  display: block;
  width: 100%;
  height: 352px;
}
.header .nav {
  position: absolute;
  top: 15px;
  right: 0;
  left: 0;
  color: #fff;
  font-size: 14.4px;
  font-size: calc(16 * var(--font-scale) * 1px);
  *zoom: 1;
}
.header .nav:after {
  display: block;
  clear: both;
  content: "";
  visibility: hidden;
  height: 0;
}
.header .nav > div > a {
  color: #fff;
  text-decoration: none;
  position: relative;
  transition: all 0.5s;
}
.header .nav > div > a::after, .header .nav > div > a::before {
  position: absolute;
  content: "";
  right: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: #fff;
  transition: all 0.5s;
}
.header .nav > div > a:hover::after, .header .nav > div > a:hover::before {
  width: 100%;
}
.header .nav > div > a::after {
  right: auto;
  left: 0;
}
.header .nav > div > span {
  margin: 0 4.8px;
}
.header .nav > div:nth-child(1) {
  float: left;
}
.header .nav > div:nth-child(2) {
  float: right;
}
.header .nav > div:nth-child(2) > a {
  margin-left: 22px;
}
.header .nav > div:nth-child(2) > a:nth-last-of-type(1), .header .nav > div:nth-child(2) > a:nth-last-of-type(2) {
  margin-left: 0;
}
.header .nav .wechat:hover > img,
.header .nav .weibo:hover > img {
  display: block;
  animation: fadeInUp 0.5s;
}
.header .nav .ercode {
  position: absolute;
  width: 100px;
  top: 30px;
  left: -25px;
  display: none;
  z-index: 999;
}
.header > .logo-search-container {
  position: absolute;
  top: 140px;
  left: 0;
  right: 0;
  text-align: center;
}
.header > .logo-search-container::after {
  display: block;
  content: "";
  clear: both;
}
.header > .logo-search-container .banner-logo {
  height: 103px;
  float: left;
}
.header .search-container {
  font-size: 0;
  margin-top: 28px;
  border-radius: 40px;
  float: right;
}
.header .search-container input {
  width: 320px;
  line-height: 56px;
  height: 56px;
  background-color: #fff;
  border: none;
  vertical-align: middle;
  font-size: 16.2px;
  font-size: calc(18 * var(--font-scale) * 1px);
  padding-left: 17px;
  border-bottom-left-radius: 4px;
  border-top-left-radius: 4px;
}
.header .search-container input:focus-visible {
  outline: none;
}
.header .search-container .search-btn {
  display: inline-block;
  text-align: center;
  background-color: #72a9ed;
  font-size: 21.6px;
  font-size: calc(24 * var(--font-scale) * 1px);
  color: #fff;
  height: 56px;
  line-height: 56px;
  width: 120px;
  vertical-align: middle;
  cursor: pointer;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
}
.header .search-container .search-btn .ic-search {
  width: 22px;
  top: 3px;
  position: relative;
}
.header .bmxz {
  cursor: pointer;
}
@media screen and (max-width: 1450px) {
  .header .top-bg {
    height: 18.33333vw;
  }
  .header .nav {
    top: 0.78125vw;
  }
  .header .nav > div > span {
    margin: 0 0.25vw;
  }
  .header .nav > div:nth-child(2) > a {
    margin-left: 1.14583vw;
  }
  .header .nav .ercode {
    width: 5.20833vw;
    top: 1.5625vw;
    left: -1.30208vw;
  }
  .header > .logo-search-container {
    top: 7.29167vw;
  }
  .header > .logo-search-container .banner-logo {
    height: 5.36458vw;
  }
  .header .search-container {
    margin-top: 1.45833vw;
    border-radius: 2.08333vw;
  }
  .header .search-container input {
    width: 22.91667vw;
    height: 3.38542vw;
    line-height: 3.38542vw;
    padding-left: 0.88542vw;
    border-bottom-left-radius: 0.20833vw;
    border-top-left-radius: 0.20833vw;
  }
  .header .search-container .search-btn {
    height: 3.38542vw;
    line-height: 3.38542vw;
    font-size: 18px;
    font-size: calc(20 * var(--font-scale) * 1px);
    width: 6.25vw;
    border-top-right-radius: 0.20833vw;
    border-bottom-right-radius: 0.20833vw;
  }
  .header .search-container .search-btn .ic-search {
    width: 1.14583vw;
    top: 0.15625vw;
  }
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translate3d(0, 20px, 0);
  }
  100% {
    opacity: 1;
    transform: translateZ(0);
  }
}
.nav-menu {
  background-color: #0764cc;
  position: sticky;
  top: 0;
  z-index: 999;
}
.nav-menu ul {
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
}
.nav-menu ul li {
  text-align: center;
  list-style-type: none;
}
.nav-menu ul li:first-child {
  margin-left: 0;
}
.nav-menu ul li a {
  color: #fff;
  font-size: 21.6px;
  font-size: calc(24 * var(--font-scale) * 1px);
  text-decoration: none;
  height: 80px;
  line-height: 80px;
  transition: all 0.2s;
  font-weight: bold;
  position: relative;
}
.nav-menu ul li a::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 3px;
  border-radius: 4px;
  background-color: #fff;
  position: absolute;
  left: 0;
  bottom: -15px;
  transition: all 0.3s ease;
}
.nav-menu ul li a:hover::after {
  width: 100%;
}
.nav-menu ul li.active a::after {
  width: 100%;
}
@media screen and (max-width: 1450px) {
  .nav-menu ul {
    flex-wrap: wrap;
  }
  .nav-menu ul li a {
    height: 4.16667vw;
    line-height: 4.16667vw;
  }
}

@media screen and (max-width: 992px) {
  /* #region header */
  .header .top-bg {
    height: 200px;
    -o-object-fit: cover;
       object-fit: cover;
  }
  .header .nav {
    font-size: 12.6px;
    font-size: calc(14 * var(--font-scale) * 1px);
  }
  .header .logo-search-container {
    top: 50px;
    text-align: center;
  }
  .header .logo-search-container .banner-logo {
    height: auto;
    width: 60%;
    max-height: 70px;
    -o-object-fit: contain;
       object-fit: contain;
    float: none;
    margin: 0 auto;
  }
  .header .logo-search-container .search-container {
    float: none;
    margin-top: 10px;
  }
  .header .logo-search-container .search-container input {
    height: 40px;
    line-height: 40px;
    width: 75%;
    padding-left: 10px;
    font-size: 14.4px;
    font-size: calc(16 * var(--font-scale) * 1px);
  }
  .header .logo-search-container .search-container .search-btn {
    width: 25%;
    height: 40px;
    line-height: 40px;
    font-size: 18px;
    font-size: calc(20 * var(--font-scale) * 1px);
  }
  .header .logo-search-container .search-container .search-btn .ic-search {
    width: 18px;
    top: 3px;
  }
  /* #endregion header */
  .nav-menu {
    height: 100px;
    line-height: 45px;
    overflow: hidden;
  }
  .nav-menu ul li {
    width: 33.33333%;
    height: auto;
    text-align: center;
    margin-left: 0;
  }
  .nav-menu ul li a {
    line-height: initial;
    display: initial;
    font-size: 18px;
    font-size: calc(20 * var(--font-scale) * 1px);
  }
  .nav-menu ul li a::after {
    bottom: -10px;
  }
}