header {
  width: 100%;
  height: 100px;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  background-color: #fff;
}

header .header {
  width: 73%;
  height: 100%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

header .header .logo {
  width: 20%;
}

header .header .logo img {
  max-width: 100%;
  vertical-align: text-bottom;
}

header .header .pc_nav {
  display: flex;
  align-items: center;
  height: 100%;
  margin: 0 5%;
  flex: 1;
}

header .header .pc_nav li {
  width: 16.66666%;
  height: 100%;
  position: relative;
}

header .header .pc_nav li>a {
  display: block;
  text-align: center;
  height: 100%;
  width: 100%;
  line-height: 100px;
}

header .header .pc_nav li>a:hover {
  background-image: url("../images/nav_hover_bg.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 80px 80px;
  color: #1A8CE1;
}

.a {
  background-image: url("../images/nav_hover_bg.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 80px 80px;
  color: #1A8CE1;
}

header .header .pc_nav li .son {
  width: 100%;
  position: absolute;
  top: 100px;
  left: 0;
  z-index: 99;
  display: none;
  background-color: #fff;
  box-shadow: 1px 1px 4px 1px #ccc;
}

header .header .pc_nav li .son>a {
  display: block;
  width: 100%;
  line-height: 40px;
  text-align: center;
  font-size: 14px;
}

header .header .pc_nav li .son>a:hover {
  background-color: #1A8CE1;
  color: #fff;
}

header .header .pc_nav .act {
  /* background-color: #1A8CE1; */
  background-image: url("../images/nav_hover_bg.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 80px 80px;
}

header .header .pc_nav .act>a {
  color: #1A8CE1;
}

header .header .right {
  width: 10%;
  display: flex;
  justify-content: end;
  align-items: center;
}

header .header .right img {
  padding: 0 20px;
  box-sizing: border-box;
  /* border-right: 1px solid #333333; */
  cursor: pointer;
}

header .header .right p {
  padding: 0 20px;
  box-sizing: border-box;
  color: #333333;
  font-size: 16px;
}

header .header .right .menu,
header .header .right .close {
  width: 35px;
  padding: 0;
  display: none;
}

header .header .pc_form {
  position: absolute;
  top: 100px;
  right: 0;
  z-index: 99;
  display: none;
}

header .header .pc_form .inp {
  border: none;
  outline: none;
  width: 250px;
  height: 35px;
  padding: 0 10px;
  border: 1px solid #1A8CE1;
  border-radius: 25px;
  box-sizing: border-box;
}

header .header .pc_form .btn {
  background-color: #fff0;
  color: #1A8CE1;
  border: none;
  outline: none;
  margin-left: -15%;
  cursor: pointer;
}

header .header .web_nav {
  width: 100%;
  position: fixed;
  top: 100px;
  left: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
}

header .header .web_nav form {
  display: flex;
}

header .header .web_nav form .inp {
  width: 80%;
  height: 35px;
  padding: 0 10px;
  border: none;
  outline: none;
  box-sizing: border-box;
}

header .header .web_nav form .btn {
  width: 20%;
  height: 35px;
  background-color: #1A8CE1;
  color: #fff;
  border: none;
  outline: none;
}

header .header .web_nav li {
  padding: 10px 2%;
  box-sizing: border-box;
  border-bottom: 1px dashed #ddd;
}

header .header .web_nav li:nth-child(1) {
  border: none;
}

header .header .web_nav li>a {
  color: #fff;
}

header .header .web_nav li .son {
  display: flex;
  flex-wrap: wrap;
}

header .header .web_nav li .son a {
  display: inline-block;
  width: 25%;
  color: #ccc;
  font-size: 14px;
  margin-top: 5px;
}

@media screen and (max-width: 1440px) {
  header .header {
    width: 80%;
  }
}

@media screen and (max-width: 1200px) {
  header {
    height: 100px;
  }

  header .header {
    width: 96%;
  }

  header .header .logo {
    width: 40%;
  }

  header .header .pc_nav {
    display: none;
  }

  header .header .web_nav {
    height: calc(100vh - 70px);
    top: 100px;
    padding: 30px 2%;
    box-sizing: border-box;
  }

  header .header .web_nav form {
    justify-content: center;
  }

  header .header .web_nav form .inp {
    width: 50%;
    height: 40px;
  }

  header .header .web_nav form .btn {
    width: 15%;
    height: 40px;
  }

  header .header .web_nav li {
    width: 80%;
    margin: auto;
    padding: 15px 2%;
  }

  header .header .web_nav li .son a {
    width: 10%;
  }

  header .header .right img {
    border-right: none;
  }

  header .header .right .search {
    display: none;
  }

  header .header .right .menu {
    display: block;
  }

  header .header .right p {
    display: none;
  }
}

@media screen and (max-width: 768px) {
  header {
    height: 70px;
  }

  header .header .web_nav {
    top: 70px;
  }

  header .header .web_nav li {
    width: 100%;
  }

  header .header .web_nav li form .inp {
    width: 80%;
  }

  header .header .web_nav li form .btn {
    width: 20%;
  }

  header .header .web_nav li .son a {
    width: 25%;
  }
}