header {
    position: fixed;
    top: 0;
    left: 0;
    background-color: #fff;
    z-index: 99;
    width: 100vw;
    box-shadow: 0px 0px 10px #e6e7e9;
  }
  header.isHome {
    box-shadow: unset;
    background-color: transparent;
  }
  header .content-box {
    width: calc(100% - 256px);
    margin: 0 auto;
  }
  header a {
    color: inherit;
    text-decoration: none !important;
  }
  @media screen and (max-width: 500px) {
    header .content-box {
      width: calc(100% - 40px);
      margin: 0 auto;
    }
  }
  header .header-box {
    height: 79px;
    display: flex;
    width: calc(100% - 192px);
  }
  header .header-box .logo-box {
    height: 100%;
    display: flex;
    align-items: center;
    width: 420px;
  }
  header .header-box .logo-box img {
    width: 25px;
    height: 40px;
    margin-right: 23px;
  }
  header .header-box .logo-box .text {
    color: #000;
    font-size: 17px;
    font-weight: 500;
  }
  header .header-box .logo-box .text p {
    margin: 0;
  }
  header .header-box .logo-box .text p:last-child {
    font-size: 15px;
  }
  header .header-box .menu-box {
    height: 100%;
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #000;
    font-size: 16px;
    padding-left: 220px;
    box-sizing: border-box;
  }
  header .header-box .menu-box > div {
    border-bottom: solid 3px transparent;
    padding: 0 5px 3px;
    border-radius: 2px;
    cursor: pointer;
    font-weight: 400;
  }
  header .header-box .menu-box > div.menu-item.active,
  header .header-box .menu-box > div.menu-item.active a {
    color: #428AF7;
    border-color: #428AF7;
  }
  header .header-box .menu-box > div.menu-item:hover,
  header .header-box .menu-box > div.menu-item:hover a {
    color: #428AF7;
    border-color: #428AF7;
  }
  header .header-box .menu-box > div.menu-item:last-child:hover {
    border-color: transparent;
  }
  header .header-box .menu-box > div > a {
    display: flex;
    align-items: center;
    font-family: PingFangSC-Medium;
    color: #000;
  }
  header .header-box .menu-box > div > a img {
    width: 28px;
    margin-right: 3px;
  }
  header .header-box .menu-box > div.nav-item {
    position: relative;
  }
  header .header-box .menu-box > div.nav-item .title img {
    width: 15px;
    margin-left: 5px;
    margin-right: 0;
    transform: unset;
  }
  header .header-box .menu-box > div.nav-item:hover .title img {
    transform: rotate(180deg);
  }
  header .header-box .menu-box > div.nav-item:hover ul {
    display: block;
  }
  header .header-box .menu-box > div.nav-item ul {
    position: absolute;
    top: 100%;
    left: -18px;
    background-color: #fff;
    width: calc(100% + 60px);
    padding: 15px 0 15px;
    display: none;
    box-shadow: 0px 10px 10px #c9cacb6e;
    border-radius: 5px;
  }
  header .header-box .menu-box > div.nav-item ul li {
    list-style: none;
    padding-left: 20px;
    line-height: 30px;
  }
  header .header-box .menu-box > div.nav-item ul li:hover,
  header .header-box .menu-box > div.nav-item ul li.active {
    background-color: #428AF7;
  }
  header .header-box .menu-box > div.nav-item ul li:hover a,
  header .header-box .menu-box > div.nav-item ul li.active a {
    color: #fff;
  }
  header .header-box .menu-list {
    display: none;
  }
  @media screen and (max-width: 1600px) {
    header .header-box .logo-box {
      width: 350px;
    }
    header .header-box .logo-box img {
      width: 50px;
      height: 50px;
      margin-right: 23px;
    }
    header .header-box .logo-box .text {
      font-size: 14px;
    }
    header .header-box .logo-box .text p:last-child {
      font-size: 14px;
    }
    header .header-box .menu-box {
      font-size: 15px;
      padding-left: 50px;
    }
    header .header-box .menu-box div a img {
      width: 20px;
    }
  }
  @media screen and (max-width: 1250px) {
    header .header-box .logo-box {
      width: 250px;
    }
  }
  @media screen and (max-width: 1100px) {
    header .header-box {
      width: 80%;
      justify-content: space-between;
    }
    header .header-box .menu-box {
      display: none;
    }
    header .header-box .menu-box div:last-child {
      display: block;
    }
    header .header-box .menu-list {
      display: block;
      justify-content: right;
    }
    header .header-box .menu-list .menu-ico {
      height: 100%;
      display: flex;
      align-items: center;
      cursor: pointer;
      width: 30px;
    }
    header .header-box .menu-list .menu-ico img {
      width: 30px;
    }
    header .header-box .menu-list .list-box {
      position: fixed;
      width: 100vw;
      top: 79px;
      left: 0;
      padding: 20px 0;
      background-color: #fff;
      box-shadow: 0px 5px 10px #f2f3f5;
      border-top: solid 1px #f2f3f5;
      z-index: 199;
    }
    header .header-box .menu-list .list-box div {
      color: #000;
      width: 80%;
      margin: 0 auto;
      line-height: 80px;
      font-size: 20px;
      cursor: pointer;
      border-bottom: solid 1px #e2e3e6;
    }
    header .header-box .menu-list .list-box div.sub-title a {
      padding: 0 20px;
    }
    header .header-box .menu-list .list-box div.sub-title-list {
      padding: 0 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    header .header-box .menu-list .list-box div.sub-title-list img {
      width: 15px;
      height: 15px;
    }
    header .header-box .menu-list .list-box div.nav-title {
      display: none;
      transition: ease-in-out;
    }
    header .header-box .menu-list .list-box div.nav-title a {
      padding: 0 20px 0 40px;
    }
    header .header-box .menu-list .list-box div.active {
      color: #428AF7;
    }
    header .header-box .menu-list .list-box div.active a {
      color: #428AF7;
    }
    header .header-box .menu-list .list-box div:hover a {
      color: #428AF7;
    }
    header .header-box .menu-list .list-box div:last-child {
      border: none;
    }
    header .header-box .menu-list .list-box div a {
      display: block;
    }
  }
  @media screen and (max-width: 550px) {
    header {
      justify-content: space-between;
    }
    header .header-box {
      width: calc(100% - 40px);
      height: 70px;
    }
    header .header-box .logo-box img {
      width: 23px;
      height: 35px;
      margin-right: 15px;
    }
    header .header-box .logo-box .text {
      font-size: 14px;
    }
    header .header-box .menu-box {
      display: none;
      justify-content: right;
    }
    header .header-box .menu-box div {
      display: none;
    }
    header .header-box .menu-box div:last-child {
      display: none;
    }
    header .header-box .menu-list .menu-ico {
      height: 100%;
      display: flex;
      align-items: center;
      cursor: pointer;
      width: 24px;
    }
    header .header-box .menu-list .menu-ico img {
      width: 24px;
    }
    header .header-box .menu-list .list-box {
      top: 70px;
      padding: 10px 0;
    }
    header .header-box .menu-list .list-box div {
      width: calc(100% - 40px);
      margin: 0 auto;
      line-height: 40px;
      font-size: 14px;
    }
  }