#head-a {
  height: 86px;
  background-color: #7ec0ee;
  display: none;
}
.header .nav li > a {
  color: #000;
  font-size: 16px;
  position: relative;
}
.header .nav .lang a {
  color: #777777;
}
.header .nav .lang .hightlight {
  color: #333333;
}
.header_nav_a {
  color: #31549e;
  padding-bottom: 16px;
  border-bottom: 4px solid #0070d0;
}

.ny-banner {
  overflow: hidden;
  position: relative;
}
.ny-banner img {
  width: 100%;
}
.footer {
  width: 100%;
  background: #ffffff;
}
.footer-center {
  width: 100%;
  padding: 58px 50px 60px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
}

.footer-nav {
  width: 60%;
  margin-left: 60px;
  display: flex;
  justify-content: space-between;
}
.footer-nav dl {
  float: left;
}
.footer-nav dl img {
  width: 145px;
  height: 145px;
}
.footer-nav dl:nth-child(5) {
  width: 284px;
  margin-left: 80px;
}
.footer-nav dl:nth-child(5) dd {
  color: #9e9e9e;
  line-height: 24px;
  font-size: 14px;
}
.footer-nav dl:nth-child(6) {
  width: 145px;
  text-align: center;
  color: #9e9e9e;
}
.footer-nav dt {
  margin-bottom: 12px;
}
.footer-nav dt a {
  font-size: 16px;
  color: #31549e;
}
.footer-nav dd a {
  font-size: 14px;
  line-height: 24px;
  color: #9e9e9e;
}
.footer-img {
  width: 35%;
  display: flex;
  flex-wrap: wrap;
}
.footer-img .footer-logo {
  width: 100%;
  margin-bottom: 20px;
}
.footer-img .footer-logo img {
  min-width: 161px;
  margin: 0 auto;
}
.footer-img .footer-code {
  width: 100%;
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-start;
}
.footer-img .footer-code img {
  height: 70%;
  margin-right: 50px;
}
.footer-btm {
  line-height: 76px;
  font-size: 14px;
  color: #ffffff;
  background: #31549e;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.footer-btm div {
  width: 100%;
  display: flex;
  justify-content: center;
}
.footer-btm .fl {
  margin-right: 20px;
}
.totop {
  display: none;
  width: 50px;
  height: 50px;
  background: #909090 url(../images/totop.png) no-repeat center center;
  z-index: 8;
  position: fixed;
  right: 0%;
  bottom: 20%;
}
.totop:hover {
  background-color: #0070d0;
}

/* ============================================= */

/* 适配各种屏幕尺寸 */
@media (min-width: 320px) {
  .ny-banner {
    position: relative;
    top: 62px;
  }
  .footer-center {
    padding: 35px 25px;
  }
  .footer-logo,
  .footer-navDl {
    display: none;
  }
  .footer-nav {
    margin-left: 0;
    justify-content: space-around;
  }
  .footer-nav dl:nth-child(1),
  .footer-nav dl:nth-child(2),
  .footer-nav dl:nth-child(3),
  .footer-nav dl:nth-child(4) {
    display: none;
  }
  .footer-nav dl:nth-child(5) {
    width: auto;
    margin-left: 0;
    margin-right: 20px;
  }

  .footer-nav dl:nth-child(6) {
    width: auto;
    display: none;
  }
  .footer-nav dl img {
    width: auto;
    height: auto;
  }
  .footer-img .footer-code {
    flex-wrap: wrap;
    justify-content: center;
  }
  .footer-img .footer-code img {
    height: 40%;
    margin-right: 0;
  }
  .footer-btm {
    display: inherit;
    font-size: 12px;
    line-height: 35px;
    padding: 15px 0;
  }
  .totop {
    display: none !important;
  }
}

@media (min-width: 375px) {
  .footer-center {
    flex-wrap: wrap;
  }
  .footer-nav {
    width: 100%;
  }
  .footer-img {
    width: 100%;
  }
  .footer-img .footer-code {
    flex-wrap: nowrap;
    justify-content: space-around;
    height: 125px !important;
    margin-top: 25px;
  }
  .footer-img .footer-code img {
    height: 100%;
    margin-right: 0;
  }
}

@media (min-width: 550px) {
  .footer-center {
    flex-wrap: nowrap;
  }
  .footer-nav {
    width: 60%;
  }
  .footer-nav dl:nth-child(5) {
    width: 340px;
  }
  .footer-nav dt a {
    font-size: 20px;
  }
  .footer-nav dl:nth-child(5) dd {
    line-height: 26px;
    font-size: 16px;
  }
  .footer-nav dl:nth-child(6) {
    width: 145px;
    display: block;
  }
  .footer-img {
    width: 40%;
    align-items: center;
    padding-left: 1%;
  }
  .footer-img .footer-code {
    flex-wrap: nowrap;
    justify-content: space-between;
    height: 125px !important;
    margin-top: 0;
  }
  .footer-img .footer-code img {
    height: 85%;
  }
}

@media (min-width: 769px) {
  .ny-banner {
    position: relative;
    top: 70px;
  }
  .footer-nav dl img {
    width: 145px;
    height: 145px;
  }
  .footer-nav dt a {
    font-size: 22px;
  }
  .footer-nav dl:nth-child(5) {
    width: 500px;
  }
  .footer-nav dl:nth-child(5) dd {
    font-size: 17px;
  }
  .footer-img .footer-code {
    flex-wrap: nowrap;
    justify-content: space-between;
  }
  .footer-img .footer-code img {
    height: 100%;
    margin-right: 0;
  }
}

@media (min-width: 960px) {
  .footer-nav dt a {
    font-size: 24px;
  }
  .footer-nav dl:nth-child(5) {
    width: 600px;
  }
  .footer-img .footer-code {
    height: 100% !important;
    flex-wrap: nowrap;
    justify-content: space-between;
  }
  .footer-img .footer-code img {
    height: 60%;
    margin-right: 30px;
  }
}

@media (min-width: 1025px) {
  .ny-banner {
    position: relative;
    top: 0;
  }
  .footer-center {
    padding: 60px 10px;
  }
  .footer-logo,
  .footer-navDl {
    display: block;
  }
  .footer-nav {
    margin-left: 10px;
  }
  .footer-nav dl:nth-child(1),
  .footer-nav dl:nth-child(2),
  .footer-nav dl:nth-child(3),
  .footer-nav dl:nth-child(4) {
    display: block;
  }
  .footer-nav dl:nth-child(5) {
    width: 284px;
    margin-left: 0;
  }
  .footer-nav dt a {
    font-size: 16px;
  }
  .footer-nav dl:nth-child(5) dd {
    font-size: 14px;
  }
  .footer-img .footer-code {
    /* height: auto !important; */
    justify-content: flex-start;
  }
  .footer-img .footer-code img {
    height: 60%;
    margin-right: 30px;
  }
  .footer-btm {
    display: flex;
    font-size: 14px;
  }
  .totop {
    display: block !important;
  }
}

@media (min-width: 1100px) {
  .footer-center {
    padding: 60px 30px;
  }
  .footer-nav {
    margin-left: 20px;
  }
}

@media (min-width: 1280px) {
  .header .nav li {
    margin-left: 40px;
  }
  .footer-center {
    padding: 60px 50px 60px 100px;
  }
  .footer-nav {
    margin-left: 60px;
    justify-content: space-between;
  }
  .footer-img .footer-code img {
    /* height: 70%; */
    margin-right: 50px;
  }
}

@media (min-width: 1366px) {
}

@media (min-width: 1440px) {
}

@media (min-width: 1680px) {
}

@media (min-width: 1920px) {
}