.page_container {
  display: block;
  width: 1520px;
  margin: 0 auto;
}

.page_header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  height: 120px;
  transition: all 0.5s;
  z-index: 9;
}

.page_header.on,
.page_header:hover {
  background-color: #fff;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

.page_header .logo {
  float: left;
  width: 120px;
  font-size: 0;
  margin-top: 14px;
}

.page_header .logo a {
  display: block;
  width: 100%;
}

.page_header .logo img {
  width: 100%;
}

.page_header .logo img.img1 {
  display: block;
}

.page_header .logo img.img2 {
  display: none;
}

.page_header.on .logo img.img1,
.page_header:hover .logo img.img1 {
  display: none;
}

.page_header.on .logo img.img2,
.page_header:hover .logo img.img2 {
  display: block;
}

.page_header .aside {
  float: right;
  margin-right: -30px;
}

.page_header .nav li {
  float: left;
  position: relative;
  z-index: 2;
}

.page_header .nav li>a {
  display: block;
  color: #fff;
  font-size: 20px;
  line-height: 120px;
  padding: 0 30px;
  transition: all 0.5s;
  position: relative;
  z-index: 1;
  transition: all .4s;
}

.page_header .nav li>a::after {
  width: calc(100% - 60px);
  left: 30px;
  bottom: 0;
  height: 4px;
  background-color: #14315b;
  content: '';
  position: absolute;
  opacity: 0;
  transition: opacity 0.2s;
}

.page_header.on .nav li>a,
.page_header:hover .nav li>a {
  color: #333;
}

.page_header.on .nav li:hover>a,
.page_header.on .nav li.on>a,
.page_header.on .nav li>a.active,
.page_header:hover .nav li:hover>a,
.page_header:hover .nav li.on>a,
.page_header:hover .nav li>a.active {
  color: #14315b;
  font-weight: normal;
}

.page_header.on .nav li>a.active::after,
.page_header:hover .nav li>a.active::after {
  opacity: 1;
}

.page_header .nav li>.sub_nav {
  position: absolute;
  left: 30px;
  top: 100%;
  z-index: 1;
  width: 40vw;
  align-items: center;
  display: none;
  transition: all 0.4s;
}

.page_header .nav li.on>.sub_nav {
  display: flex;
}
.page_header .nav li:nth-last-child(3) .sub_nav{
  left: -60px;
}
.page_header .nav li:nth-last-child(1) .sub_nav {
  justify-content: flex-end;
  left: auto;
  right: 0;
}

.page_header .nav li>.sub_nav a {
  font-size: 20px;
  margin-right: 20px;
  line-height: 70px;
}

.page_header .nav li>.sub_nav a:hover {
  color: #14315b;
}


.page_header .sub_nav_bg {
  display: block;
  background: #f0f0f0;
  width: 100vw;
  height: 0;
  position: fixed;
  left: 0;
  z-index: 1;
  top: 120px;
  transition: all .3s;
}

.page_header .sub_nav_bg.on {
  height: 70px;
}

.mobile_header,
.mobile_nav {
  display: none;
}

.page_footer {
  background: #000000;
  position: relative;
  z-index: 15;
}

.page_footer_top {
  padding: 60px 0 30px;
  border-bottom: 1px solid #333;
}

.page_footer_top .contact {
  float: left;
}

.page_footer_top .contact h4,
.page_footer_top .follow h4 {
  font-size: 18px;
  line-height: 16px;
  color: #fff;
  /* font-weight: 300; */
  margin-bottom: 24px;
}

.page_footer_top .contact h2 {
  font-size: 36px;
  line-height: 42px;
  color: #fff;
  font-weight: normal;
  letter-spacing: 1px;
}

.page_footer_top .follow {
  float: right;
  text-align: center;
}

.page_footer_top .follow li {
  display: inline-block;
  vertical-align: middle;
  padding: 0 6px;
  position: relative;
  z-index: 1;
}

.page_footer_top .follow li label {
  display: block;
  width: 36px;
  height: 36px;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  background-color: #fff;
  border-radius: 100%;
  cursor: pointer;
  user-select: none;
  transition: all .4s;
}

.page_footer_top .follow li img {
  display: none;
  width: 160px;
  position: absolute;
  left: 50%;
  top: -180px;
  transform: translateX(-50%);
  z-index: 2;
}

.page_footer_top .follow li label:hover {
  transform: scale(1.1);
}

.page_footer_top .follow li label:hover+img {
  display: block;
}

.page_footer_middle {
  padding: 30px 0 80px;
}

.page_footer_middle .nav ul {
  display: flex;
  justify-content: space-between;
}

.page_footer_middle .nav li>a {
  display: block;
  color: #fff;
  font-size: 20px;
  margin-bottom: 30px;
  font-weight: bold;
}

.page_footer_middle .sub_nav a {
  display: block;
  color: #fff;
  font-size: 16px;
  margin-bottom: 20px;
}

.page_footer_bottom {
  padding: 20px 0;
  border-top: 1px solid #333;
}

.page_footer_bottom a {
  color: #fff;
  font-size: 16px;
}

.page_footer_bottom .copyright {
  float: left;
}

.page_footer_bottom .copyright a {
  margin-right: 20px;
}

.page_footer_bottom .support {
  float: right;
}


@media (max-width: 1700px) and (min-width: 1300px) {
  .page_container {
    width: 1200px;
  }

  .page_header {
    height: 90px;
  }

  .page_header .logo {
    width: 90px;
    margin-top: 12px;
  }

  .page_header .nav li>a {
    font-size: 17px;
    line-height: 90px;
    padding: 0 20px;
  }

  .page_header .nav li>a::after {
    width: calc(100% - 40px);
    left: 20px;
  }

  .page_header .sub_nav_bg {
    top: 90px;
  }

  .page_header .sub_nav_bg.on {
    height: 58px;
  }

  .page_header .nav li>.sub_nav {
    left: 20px;
  }

  .page_header .nav li>.sub_nav a {
    font-size: 15px;
    line-height: 58px;
  }

  .page_footer_top {
    padding: 46px 0 20px;
  }

  .page_footer_top .contact h4,
  .page_footer_top .follow h4 {
    font-size: 16px;
    margin-bottom: 18px;
  }

  .page_footer_top .contact h2 {
    font-size: 30px;
    line-height: 32px;
  }

  .page_footer_top .follow li label {
    width: 30px;
    height: 30px;
  }

  .page_footer_middle .nav li>a {
    font-size: 18px;
    margin-bottom: 20px;
  }

  .page_footer_middle .sub_nav a {
    font-size: 14px;
    margin-bottom: 18px;
  }

  .page_footer_bottom {
    padding: 15px 0;
  }

  .page_footer_bottom a {
    font-size: 14px;
  }
}


@media (max-width: 1300px) {

  .page_container {
    width: 100%;
  }

  .page_header {
    display: none;
  }

  .mobile_header {
    display: block;
    position: fixed;
    z-index: 9;
    left: 0;
    top: 0;
    background: #fff;
    width: 100%;
    padding: 12px;
    border-bottom: 1px solid #f1f1f1;
  }

  .mobile_header .logo {
    float: left;
    width: 60px;
  }

  .mobile_header .nav_btn {
    float: right;
    width: 24px;
    margin-top: 14px;
  }

  .mobile_header .nav_btn span {
    width: 100%;
    height: 2px;
    margin-bottom: 6px;
    background-color: #000;
    display: block;
    position: relative;
    transition: .3s;
  }

  .mobile_header .nav_btn.on span:nth-child(1) {
    transform: rotate(45deg);
    top: 8px;
    right: 0px;
  }

  .mobile_header .nav_btn.on span:nth-child(2) {
    display: none;
  }

  .mobile_header .nav_btn.on span:nth-child(3) {
    transform: rotate(-45deg);
    top: 0;
    right: 0;
  }

  .mobile_nav {
    position: fixed;
    left: 0;
    top: 71px;
    z-index: 9;
    width: 100%;
    height: calc(100% - 71px);
    background: #fff;
    padding: 16px;
  }

  .mobile_nav li {
    border-bottom: 1px solid #e3e3e3;
    padding: 20px 0 10px;
  }

  .mobile_nav li>a {
    display: block;
    color: #000;
    font-weight: normal;
    font-size: 16px;
  }

  .mobile_nav .sub_nav {
    margin-top: 14px;
  }

  .mobile_nav .sub_nav a {
    display: inline-block;
    vertical-align: middle;
    font-size: 16px;
    margin-right: 12px;
    margin-bottom: 10px;
  }

  .page_footer_top {
    padding: 40px 16px 20px;
    border-bottom: none;
  }

  .page_footer_top .contact {
    width: 100%;
    text-align: center;
  }

  .page_footer_top .contact h4,
  .page_footer_top .follow h4 {
    font-size: 15px;
    line-height: 16px;
    margin-bottom: 15px;
  }

  .page_footer_top .contact h2 {
    font-size: 28px;
  }

  .page_footer_top .follow {
    float: left;
    margin-top: 20px;
    width: 100%;
  }

  .page_footer_middle {
    display: none;
  }

  .page_footer_bottom {
    padding: 12px 0;
  }

  .page_footer_bottom a {
    color: #fff;
    font-size: 14px;
  }

  .page_footer_bottom .copyright {
    float: none;
    width: 100%;
    text-align: center;
  }

  .page_footer_bottom .support {
    float: none;
    width: 100%;
    text-align: center;
    margin-top: 12px;
  }
}


/* expire_prompt start---------------------------------------------------------------- */
.expire_prompt {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, .8);
}

.expire_prompt .main {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  width: 420px;
}

.expire_prompt .main h2 {
  color: #333;
  font-size: 18px;
  margin-bottom: 10px;
}

.expire_prompt .main h4 {
  color: #333;
  font-size: 15px;
}
/* expire_prompt end---------------------------------------------------------------- */