@media screen and (min-width: 1024px) {
  .three-nav {
    width: 100%;
    min-width: 1200px;
    background-image: url(../img/group-three-bg.jpg);
    background-size: 100% 100%;
  }
  .three-nav .three-box {
    width: 1200px;
    margin: 0 auto;
    height: 184px;
    padding: 1px 30px;
    overflow: hidden;
  }
  .three-nav .three-box div {
    float: left;
  }
  .three-nav .three-box div .word1 {
    font-size: 33px;
    color: #fff;
    margin-top: 60px;
    margin-bottom: 14px;
  }
  .three-nav .three-box div .word2 {
    font-size: 15px;
    color: #fff;
  }
  .three-nav .three-box img {
    height: 184px;
    float: right;
  }
  .four-nav {
    width: 100%;
    min-width: 1200px;
  }
  .four-nav .four-box {
    width: 1200px;
    margin: 0 auto;
    height: 73px;
  }
  .four-nav .four-box .left-four {
    float: left;
  }
  .four-nav .four-box .left-four img {
    float: left;
    margin-top: 29px;
    margin-right: 15px;
  }
  .four-nav .four-box .left-four p {
    font-size: 16px;
    color: #8a8a8a;
    float: left;
    line-height: 72px;
  }
  .four-nav .four-box .left-four span {
    font-size: 16px;
    color: #8a8a8a;
    float: left;
    margin: 0 6px;
    line-height: 72px;
  }
  .four-nav .four-box .right-four {
    float: right;
  }
  .four-nav .four-box .right-four a {
    line-height: 71px;
    font-size: 16px;
    color: #444;
    display: block;
    width: 94px;
    float: left;
    border-bottom: 2px solid transparent;
    text-align: center;
  }
  .four-nav .four-box .right-four a:hover {
    color: #0D306C;
    border-color: #0D306C;
  }
  .four-nav .four-box .right-four .act {
    color: #0D306C;
    border-bottom: 2px solid #0D306C;
  }
  .five-nav {
    width: 100%;
    min-width: 1200px;
    margin-bottom: 50px;
  }
  .five-nav .five-box {
    width: 1200px;
    margin: 0 auto;
    border: 1px solid #dedede;
    padding: 28px;
  }
  .five-nav .five-box .word1 {
    font-size: 16px;
    color: #525252;
    text-indent: 32px;
    margin-bottom: 45px;
    line-height: 32px;
  }
  .five-nav .five-box .img-box {
    margin-bottom: 20px;
  }
  .five-nav .five-box .img-box .detail {
    width: 33.33%;
    float: left;
    margin-bottom: 10px;
  }
  .five-nav .five-box .img-box .detail img {
    height: 158px;
    margin: 0 auto;
  }
  .five-nav .five-box .img1 {
    margin: 0 auto;
    margin-bottom: 60px;
  }
  .five-nav .five-box .mb-box {
    display: none;
  }
}
@media screen and (max-width: 1023px) {
  .three-nav {
    width: 100%;
    background-image: url(../img/group-three-bg.jpg);
    background-size: 100% 100%;
  }
  .three-nav .three-box {
    height: 1.9rem;
    padding: 1px .2rem;
    overflow: hidden;
  }
  .three-nav .three-box div {
    float: left;
  }
  .three-nav .three-box div .word1 {
    font-size: .38rem;
    color: #fff;
    margin-top: .5rem;
    margin-bottom: .1rem;
  }
  .three-nav .three-box div .word2 {
    font-size: .24rem;
    color: #fff;
  }
  .three-nav .three-box img {
    height: 1.9rem;
    float: right;
  }
  .four-nav {
    width: 100%;
    margin-bottom: .24rem;
  }
  .four-nav .four-box {
    width: 100%;
  }
  .four-nav .four-box .left-four {
    height: .56rem;
    background-color: #eee;
  }
  .four-nav .four-box .left-four img {
    float: left;
    height: .24rem;
    margin-top: .16rem;
    margin-left: .1rem;
    margin-right: .1rem;
  }
  .four-nav .four-box .left-four p {
    font-size: .24rem;
    color: #8a8a8a;
    float: left;
    line-height: .56rem;
  }
  .four-nav .four-box .left-four span {
    font-size: .24rem;
    color: #8a8a8a;
    float: left;
    margin: 0 .1rem;
    line-height: .56rem;
  }
  .four-nav .four-box .right-four {
    height: .69rem;
  }
  .four-nav .four-box .right-four a {
    line-height: .5rem;
    font-size: .24rem;
    height: 1rem;
    color: #444;
    display: block;
    width: 25%;
    float: left;
    border-bottom: 2px solid #dedede;
    text-align: center;
  }
  .four-nav .four-box .right-four a:hover {
    color: #0D306C;
    border-color: #0D306C;
  }
  .four-nav .four-box .right-four .act {
    color: #0D306C;
    border-bottom: 2px solid #0D306C;
  }
  .five-nav {
    margin-bottom: .3rem;
  }
  .five-nav .five-box {
    padding: .16rem;
  }
  .five-nav .five-box .word1 {
    font-size: .24rem;
    color: #525252;
    text-indent: .32rem;
    margin-bottom: .2rem;
    line-height: .4rem;
  }
  .five-nav .five-box .img-box .detail {
    width: 50%;
    float: left;
    margin-bottom: .2rem;
  }
  .five-nav .five-box .img-box .detail img {
    width: 90%;
    margin: 0 auto;
  }
  .five-nav .five-box .img2 {
    display: block;
    width: 100%;
  }
  .mb-box{
    display: none;
  }
  .five-nav .five-box .mb-box .mb1 {
    margin-bottom: .3rem;
  }
  .five-nav .five-box .mb-box .mb1 p {
    float: left;
    width: 3.4rem;
    height: .6rem;
    background-color: #30357C;
    text-align: center;
    line-height: .6rem;
    font-size: .28rem;
    color: #fff;
  }
  .five-nav .five-box .mb-box .mb1 p:nth-last-child(1) {
    float: right;
  }
  .five-nav .five-box .mb-box .mb2 {
    width: 3.4rem;
    height: .6rem;
    background-color: #00A19C;
    text-align: center;
    line-height: .6rem;
    font-size: .28rem;
    color: #fff;
    margin: 0 auto;
    margin-bottom: .3rem;
  }
  .five-nav .five-box .mb-box .mb3 .detail {
    width: 48%;
    float: left;
    margin-bottom: .5rem;
  }
  .five-nav .five-box .mb-box .mb3 .detail div {
    height: 4.8rem;
    padding: .2rem;
    padding-top: .4rem;
    background-color: #00A19C;
    margin-bottom: .1rem;
  }
  .five-nav .five-box .mb-box .mb3 .detail div p {
    font-size: .24rem;
    color: #fff;
    text-align: center;
    line-height: .5rem;
  }
  .five-nav .five-box .mb-box .mb3 .detail .word5 {
    height: .7rem;
    background-color: #00A09B;
    font-size: .24rem;
    color: #fff;
    text-align: center;
    line-height: .7rem;
  }
  .five-nav .five-box .mb-box .mb3 .detail:nth-child(even) {
    float: right;
  }
  .five-nav .five-box .mb-box .mb3 .pd div p {
    line-height: 4rem !important;
  }
}