@media (max-width: 990px) {
  .banner video,
  .banner img {
    height: 60vh;
  }
  .w60 {
    width: 100%;
  }
  .index_three .ul li {
    margin-bottom: 30px;
  }
  .index_four .row {
    margin: 0 -15px;
  }
  .index_four .row > div {
    padding: 0 15px;
  }
  .index_four .row > div.right {
    margin-top: 20px;
  }
  .number_ul {
    flex-wrap: wrap;
  }
  .number_ul li {
    flex: none;
    width: 50%;
    margin-top: 30px;
  }
  .number_ul li:nth-child(1),
  .number_ul li:nth-child(2) {
    margin-top: 0;
  }
  footer .left .logo img {
    height: 2rem;
  }
  footer .left {
    width: 32%;
  }
}
@media (max-width: 767px) {
  .title {
    font-size: 24px;
    line-height: 1.5;
  }
  .index_five .subtitle,
  .index_six .subtitle,
  .index_seven .subtitle,
  .index_eight .subtitle,
  .index_four .subtitle,
  .index_three .subtitle,
  .index_two .subtitle,
  .index_one .subtitle {
    margin: 15px auto;
  }
  .index_seven .ul,
  .index_five .ul,
  .index_two .ul {
    margin: -8px;
  }
  .index_seven .ul li,
  .index_five .ul li,
  .index_two .ul li {
    padding: 8px;
  }
  .index_three .ul li .over img {
    height: 9.125rem;
  }
  .index_three .ul li .hover {
    opacity: 1;
  }
  .index_four .subtitle {
    font-size: 1.125rem;
  }
  .index_four .number_ul {
    margin-top: 20px;
    padding: 15px;
  }
  .number_ul li {
    width: 100%;
    margin: 0 0 20px 0;
  }
  .number_ul li:last-child {
    margin-bottom: 0;
  }
  .number_ul li .num {
    font-size: 1.625rem;
  }
  .index_five .ul li > div {
    padding: 1rem;
  }
  .line {
    margin: 0rem 0 2rem;
  }
  .index_six .ul li:not(:last-child) {
    margin-bottom: 15px;
  }
  .index_seven .ta .more div {
    font-size: 1.125rem;
  }
  .index_seven .ta .more {
    margin-top: 1.5rem;
  }
  .index_eight .line {
    margin: 0 0 15px;
  }
  .index_eight .row {
    margin: 0 -15px;
  }
  .index_eight .row > div {
    padding: 0 15px;
  }
  .index_eight .row .left {
    padding-right: 15px;
  }
  .index_eight .row .right {
    padding-left: 15px;
  }
  footer .center {
    margin: 20px 0;
  }
  footer .center .con {
    display: flex;
    flex-wrap: wrap;
  }
  footer .center .con a {
    margin-right: 20px;
  }
  .beian .content {
    padding: 1.25rem 0;
  }
  footer .center,
  footer .right,
  footer .left {
    width: 100%;
  }
  footer .container {
    flex-wrap: wrap;
  }
  footer {
    padding: 2.5rem 0 2rem;
  }
}