@media screen and (max-width: 768px) {
  header .top {
    height: 50px;
  }
  header .top .marks {
    display: none;
  }
  header .navWrap .logo {
    width: 55px;
    height: auto;
  }
  header .navWrap .cn {
    font-size: 20px;
  }
  header .navWrap .en {
    font-size: 0.9rem;
  }
  header .navWrap .navbtn {
    border-radius: 5px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    color: #fff;
    height: 100%;
    font-size: 1.5rem;
    background-color: #124185;
  }
  header .m-navWrap {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    left: 0;
    background-color: rgb(0,0,0,0.25);
    padding-top: 0px;
    z-index: 100;
  }
  header .m-navWrap .btn {
    display: flex;
    justify-content: flex-end;
  }
  header .m-navWrap .btn span {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background-color: var(--main-color);
    color: #fff;
  }
  header .m-navWrap li {
    border-bottom: 1px solid #fff;
    color: #FFF;
    cursor: pointer;
    font-size: 14px;
    position: relative;
    text-overflow: ellipsis;
    white-space: nowrap;
    background-color: #124185;
  }
  header .m-navWrap li a {
    color: #fff;
    font-size: 1rem;
    padding: 8px 20px;
    display: block;
  }

  .indexSwiper {
    height: 200px;
  }
  .indexSwiper .swiper-title h1 {
    font-size: 22px;
  }
  .indexSwiper .swiper-title h2 {
    font-size: 12px;
    margin: 0;
  }

  .leftnav {
    width: 100%;
  }
  .page .leftnav {
    border: 0;
  }
  .page .leftnav .top {
    background-color: unset;
    color: var(--main-color);
    border-bottom: 1px solid var(--main-color);
  }
  .leftnav .list {
    margin: 1rem;
  }
  .leftnav .list a {
    display: inline-block;
    width: auto;
    padding: 0.5rem;
    font-size: 1rem;
    color: #5a5a5a;
    margin-right: 5px;
  }

  .indexProducts .right .box .item p {
    margin-bottom: 0;
  }

  .indexGoods .top h3 {
    font-size: 1.2rem;
  }
  .indexGoods .top .box span.num {
    font-size: 2rem;
  }
  .indexGoods .top p {
    font-size: 12px;
  }
  .indexGoods .top .pic .box {
    top: -0.3rem;
  }
  .indexGoods .top .pic .box .right {
    margin-left: 1rem;
  }
  .indexGoods .top .box span.t1, .indexGoods .top .box span.t2 {
    font-size: 1rem;
  }

  .indexGoods .list .num {
    width: 100%;
    height: 100%;
    justify-content: flex-start;
    align-content: center;
  }
  .indexGoods .list .num span {
    font-size: 2rem;
    font-weight: bolder;
  }
  .indexGoods .list .num p {
    letter-spacing: 1rem;
    text-align: center;
    margin-left: 1rem;
  }

  .indexAbout .btn {
    text-align: center;
  }
  .indexAbout .btn a {
    float: unset;
  }

  .indexNews .top {
    padding-bottom: 5rem;
  }
  .indexNews .box {
    margin-top: -50px;
  }
  .indexNews .box .item {
    border: 0;
    padding: 0;
  }
  .indexNews .box .item span:nth-child(3) {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
  }

  .content img {
    width: 100% !important;
  }

  .productlist .pic {
    height: 100px;
  }
  .productlist .box p {
    margin-bottom: 0;
  }

  .contacts .leftnav .top .topname, .book .leftnav .top .topname {
    display: block !important;
  }
  .contacts .leftnav .list, .book .leftnav .list {
    display: none;
  }
  .contacts .leftnav .top .sortname, .book .leftnav .top .sortname {
    display: none;
  }

  .contacts h3 {
    font-size: 26px;
  }
  .contacts .qrcodebox {
    position: relative;
    right: 0;
    top: -150px;
    width: 80%;
    left: 0;
    margin: 0 auto;
    height: auto;
    margin-bottom: -150px;
  }
  .contacts .bgpic {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }
}