@media screen and (max-width: 1600px) {

  .nav {
    background: url(../images/nav-bg.png) no-repeat right -160px bottom;
  }

}

@media screen and (max-width: 1440px) {

  .container {
    width: 1200px;
  }
  .header .logo img{
    height: 61px;
  }
  .nav {
    height: 100px;
    background: url(../images/nav-bg.png) no-repeat right -200px bottom;
  }
  .menu {
    margin-top: 38px;
  }
  .menu > li {
    font-size: 16px;
  }

  #slide .swiper-title {
    height: 100px;
  }

}

@media screen and (max-width: 768px) {

  body {
    min-width: auto;
  }

  .container {
    width: 100%;
    padding: 0 15px;
    box-sizing: border-box;
  }

  .header .search input[type='text'] {
    width: 180px;
  }

  .header .toggle {
    display: block;
    position: absolute;
    right: 15px;
    top: 60px;
  }

  .header .logo {
    height: 45px;
    line-height: 45px;
    padding: 10px 0;
    margin-top: 0;
  }

  .header .logo img {
    max-height: 100%;
  }

  .nav{
    height: auto;
  }

  .menu {
    position: absolute;
    top: 65px;
    left: 0;
    right: 0;
    margin-top: 0;
    background: rgba(0, 0, 0, .95);
    z-index: 999;
    display: none;
  }
  .menu>li>a {
    height: 40px;
    line-height: 40px;
    color: #fff;
    font-size: 16px;
    padding-left: 2em;
    text-align: left;
    border-bottom: 1px solid #666;
  }
  .menu>li:before{
    display: none;
  }
  .menu>li:after {
    position: absolute;
    content: "+";
    top: 0;
    bottom: 1px;
    right: 15px;
    color: #fff;
    font-size: 24px;
    text-align: center;
    width: 40px;
    line-height: 40px;
  }
  .menu .second-menu {
    top: 41px;
  }
  .menu .second-menu a {
    line-height: 40px;
    font-size: 14px;
    border-bottom: 1px solid #eee;
    background-color: rgba(255, 255, 255, 1);
  }

  #slide .swiper-title {
    height: 35%;
  }
  #slide .swiper-title h1 {
    font-size: 18px;
  }
  .swiper-container .swiper-pagination{
    display: none;
  }

  .section{
    min-height: 200px;
  }

  .title{
    margin: 20px 0;
  }
  .title p{
    font-size: 20px;
  }
  .title p img{
    height: 22px;
    margin-right: 10px;
  }
  .title a {
    font-size: 14px;
  }

  .news{
    height: auto;
  }
  #news, .news-box{
    width: 100%;
  }
  #news .swiper-slide .img {
    height: 220px;
  }
  #news .swiper-slide .txt {
    height: 60px;
  }
  #news .swiper-slide .date {
    min-width: 80px;
    padding-right: 10px;
  }
  #news .swiper-slide .date span {
    font-size: 18px;
  }
  #news .swiper-slide .txt > p {
    margin: 0 20px;
    font-size: 16px;
  }

  .news-box {
    height: auto;
    margin-top: 17px;
  }
  .news-list {
    padding: 5px 15px 20px;
  }
  .news-list li {
    margin-top: 15px;
    padding-bottom: 15px;
  }
  .news-list li .date {
    min-width: 80px;
    text-align: right;
    margin-right: 15px;
  }
  .news-list li .date span {
    font-size: 22px;
    line-height: 25px;
  }
  .news-list li > p {
    font-size: 16px;
  }

  .box, .items{
    height: auto;
  }
  .service {
    margin: 30px 0 66px;
  }
  .service .title p {
    font-size: 20px;
  }
  .tab {
    display: flex;
    margin: 0 0 15px;
  }
  .tab ul li {
    margin-right: 15px;
    font-size: 16px;
    padding-bottom: 12px;
  }
  .tab p a {
    font-size: 14px;
  }
  .items .item {
    padding: 10px 0;
  }
  .items .item .lf {
    display: none;
  }
  .items .item ul {
    width: auto;
    float: none;
    margin-left: 0;
  }
  .items .item ul li {
    width: 50%;
  }
  .items .item ul li a {
    height: 155px;
  }
  .items .item ul li .img {
    height: 115px;
  }
  .items .item ul li img {
    width: 60px;
  }
  .items .item ul li p {
    height: 40px;
    line-height: 40px;
    font-size: 13px;
  }

  .items .item:nth-of-type(2) ul li:nth-of-type(5),
  .items .item:nth-of-type(2) ul li:nth-of-type(6),
  .items .item:nth-of-type(2) ul li:nth-of-type(7),
  .items .item:nth-of-type(2) ul li:nth-of-type(8) {
    left: 0;
  }

  .items .item:nth-of-type(3) ul li:nth-of-type(4) {
    top: 0;
    left: 0;
  }

  .contact ul li {
    width: 100%;
    height: 240px;
    padding: 20px 40px;
  }
  .contact ul li:before, .contact ul li:after{
    left: 20px;
    top: 25px;
    bottom: 25px;
  }
  .contact ul li:after {
    bottom: 55%;
  }
  .contact ul li h3 {
    font-size: 30px;
  }

  .footer{
    font-size: 13px;
    padding: 20px 0;
    margin-top: 30px;
  }
  .footer .copyright{
    width: 100%;
    margin: 0 0 10px;
    line-height: 1.75em;
  }
  .footer .code{
    width: 100%;
  }
  .footer .code img{
    width: 100px;
  }

  .bread {
    height: 40px;
    line-height: 40px;
  }

  .bread .lf {
    display: none;
  }

  .bread .rt {
    float: none;
    font-size: 14px;
  }

  .side {
    display: none;
  }

  .column {
    margin: 15px 0 0;
    min-height: 300px;
  }

  .common-list li {
    height: 40px;
    line-height: 40px;
    padding: 0;
    font-size: 16px;
  }

  .common-list li p {
    margin-right: 100px;
  }

  .common-list li a {
    padding-left: 15px;
  }

  .common-list li a:before {
    top: 7px;
  }

  .caption h3 {
    line-height: 25px;
    font-size: 20px;
    margin: 20px 0 10px;
  }

  .caption h4 {
    font-size: 16px;
  }

  .caption p span {
    font-size: 12px;
    margin: 0 3px;
  }

  .content {
    margin-top: 15px;
    padding-bottom: 15px;
    min-height: 150px;
  }

  .profile {
    margin-top: 15px;
    min-height: 150px;
  }

  .mien-list li{
    width: 50%;
  }

  .mien-list li .img{
    height: 110px;
  }

}