.banner {
    width: 100%;
    height: 600px;
    position: relative;
  }
  
  .banner > img {
    width: 100%;
    height: 100%;
  }
  
  .mian {
    width: 100%;
    height: auto;
    padding: 70px 0 120px;
    background: #1367ad;
  }
  
  .mian .mian_content {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
  }
  
  .mian .mian_content .mian_c_l {
    width: 320px;
    height: auto;
    position: relative;
  }
  
  .mian .mian_content .mian_c_l .mian_c_l_content {
    width: 100%;
  }
  
  .mian .mian_content .mian_c_l .mian_c_l_content.active {
    position: absolute;
    left: 0;
    bottom: 0;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_t {
    width: 100%;
    height: 110px;
    background: #e60012;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_t p {
    width: 154px;
    text-align: center;
    line-height: normal;
    color: #fff;
    font-size: 26px;
    font-weight: normal;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b {
    width: 100%;
    height: auto;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b ul {
    width: 100%;
    height: auto;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b ul li {
    margin-top: 2px;
    width: 100%;
    height: 60px;
    background: #091520;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b ul li.active a {
    color: #E60012;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b ul li a {
    display: inline-block;
    width: 100%;
    height: 100%;
    text-align: left;
    line-height: 60px;
    padding-left: 34px;
    color: #fff;
    font-size: 18px;
  }
  
  .mian .mian_content .mian_c_l .mian_nav_b ul li a:hover {
    color: #E60012;
  }
  
  .mian .mian_content .mian_c_l.active {
    position: fixed;
    left: 250px;
    top: 100px;
  }
  
  .mian .mian_content .mian_c_r {
    width: 1040px;
    height: auto;
    margin-left: 40px;
    padding: 40px 75px 80px;
    background: #091520;
  }
  
  .mian .mian_content .mian_c_r.active {
    margin-left: 360px;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content {
    width: 100%;
    height: auto;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_title {
    color: #FFF;
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    text-transform: uppercase;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t {
    width: 100%;
    height: auto;
    margin-top: 80px;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_title {
    color: #FFF;
    text-align: center;
    font-size: 26px;
    font-weight: 400;
    text-transform: uppercase;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box {
    margin-top: 40px;
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item {
    width: 420px;
    height: auto;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg {
    width: 100%;
    height: 320px;
    overflow: hidden;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg:hover img {
    transform: scale(1.2);
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg img {
    transition: all 1s;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item p {
    text-align: left;
    margin-top: 30px;
    color: #FFF;
    font-size: 20px;
    font-weight: 400;
  }
  
  .mian .mian_content .mian_c_r .mian_c_r_item {
    margin-top: 80px;
    width: 100%;
    height: auto;
  }
  
  .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_title {
    color: #FFF;
    text-align: center;
    font-size: 26px;
    font-weight: 400;
    text-transform: uppercase;
  }
  
  .mian .mian_content .mian_c_r .mian_c_r_item img {
    max-width: 100%;
    height: auto;
    margin-top: 40px;
  }
  
  .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_desc {
    text-align: left;
    margin-top: 30px;
    color: #FFF;
    font-size: 20px;
    font-weight: 400;
  }
  
  @media screen and (max-width: 1600px) {
    .banner {
      width: 100%;
      height: 31.875vw;
      position: relative;
    }
    .banner > img {
      width: 100%;
      height: 100%;
    }
    .mian {
      width: 100%;
      height: auto;
      padding: 3.71875vw 0 6.375vw;
      background: #1367ad;
    }
    .mian .mian_content {
      width: 100%;
      height: auto;
      display: flex;
      flex-direction: row;
    }
    .mian .mian_content .mian_c_l {
      width: 17vw;
      height: auto;
      position: relative;
    }
    .mian .mian_content .mian_c_l .mian_c_l_content {
      width: 100%;
    }
    .mian .mian_content .mian_c_l .mian_c_l_content.active {
      position: absolute;
      left: 0;
      bottom: 0;
    }
    .mian .mian_content .mian_c_l .mian_nav_t {
      width: 100%;
      height: 5.84375vw;
      background: #e60012;
      display: flex;
      flex-direction: row;
      align-items: center;
      justify-content: center;
    }
    .mian .mian_content .mian_c_l .mian_nav_t p {
      width: 8.18125vw;
      text-align: center;
      line-height: normal;
      color: #fff;
      font-size: 1.38125vw;
      font-weight: normal;
    }
    .mian .mian_content .mian_c_l .mian_nav_b {
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul {
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li {
      margin-top: 0.10625vw;
      width: 100%;
      height: 3.1875vw;
      background: #091520;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li.active a {
      color: #E60012;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li a {
      display: inline-block;
      width: 100%;
      height: 100%;
      text-align: left;
      line-height: 3.1875vw;
      padding-left: 1.80625vw;
      color: #fff;
      font-size: 0.95625vw;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li a:hover {
      color: #E60012;
    }
    .mian .mian_content .mian_c_l.active {
      position: fixed;
      left: 12.75vw;
      top: 5.3125vw;
    }
    .mian .mian_content .mian_c_r {
      width: 55.25vw;
      height: auto;
      margin-left: 2.125vw;
      padding: 2.125vw 3.98438vw 4.25vw;
      background: #091520;
    }
    .mian .mian_content .mian_c_r.active {
      margin-left: 19.125vw;
    }
    .mian .mian_content .mian_c_r .mian_r_content {
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_title {
      color: #FFF;
      text-align: center;
      font-size: 2.125vw;
      font-weight: 700;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t {
      width: 100%;
      height: auto;
      margin-top: 4.25vw;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_title {
      color: #FFF;
      text-align: center;
      font-size: 1.38125vw;
      font-weight: 400;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box {
      margin-top: 2.125vw;
      width: 100%;
      height: auto;
      display: flex;
      flex-direction: row;
      justify-content: space-between;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item {
      width: 22.3125vw;
      height: auto;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg {
      width: 100%;
      height: 17vw;
      overflow: hidden;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg:hover img {
      transform: scale(1.2);
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg img {
      transition: all 1s;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item p {
      text-align: left;
      margin-top: 1.59375vw;
      color: #FFF;
      font-size: 1.0625vw;
      font-weight: 400;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item {
      margin-top: 4.25vw;
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_title {
      color: #FFF;
      text-align: center;
      font-size: 1.38125vw;
      font-weight: 400;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item img {
      max-width: 100%;
      height: auto;
      margin-top: 2.125vw;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_desc {
      text-align: left;
      margin-top: 1.59375vw;
      color: #FFF;
      font-size: 1.0625vw;
      font-weight: 400;
    }
  }
  
  @media screen and (max-width: 1023px) {
    .banner {
      width: 100%;
      height: 80vw;
      position: relative;
    }
    .banner > img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .mian {
      width: 100%;
      height: auto;
      padding: 4vw 0 8vw;
      background: #1367ad;
    }
    .mian .mian_content {
      width: 100%;
      height: auto;
      display: flex;
      flex-direction: column;
    }
    .mian .mian_content .mian_c_l {
      margin-top: 2.66667vw;
      width: 100%;
      height: auto;
      position: relative;
    }
    .mian .mian_content .mian_c_l .mian_c_l_content {
      width: 100%;
      padding-bottom: 4vw;
      overflow: hidden;
      overflow-x: scroll;
    }
    .mian .mian_content .mian_c_l .mian_c_l_content.active {
      position: absolute;
      left: 0;
      bottom: 0;
    }
    .mian .mian_content .mian_c_l .mian_nav_t {
      width: 100%;
      height: 14.66667vw;
      background: #e60012;
      display: flex;
      flex-direction: row;
      align-items: center;
      justify-content: center;
    }
    .mian .mian_content .mian_c_l .mian_nav_t p {
      width: 20.53333vw;
      text-align: center;
      line-height: normal;
      color: #fff;
      font-size: 3.46667vw;
      font-weight: normal;
    }
    .mian .mian_content .mian_c_l .mian_nav_b {
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul {
      width: 100%;
      height: auto;
      display: flex;
      flex-direction: row;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li {
      margin-top: 0.26667vw;
      width: auto;
      height: 8vw;
      margin-right: 5.6vw;
      background: transparent;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li.active {
      position: relative;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li.active a {
      color: #E60012;
      position: relative;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li.active a::after {
      position: absolute;
      top: 110%;
      left: 50%;
      transform: translateX(-50%);
      width: 100%;
      height: 0.4vw;
      background: #E60012;
      content: '';
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li a {
      display: inline-block;
      width: 100%;
      height: 100%;
      text-align: left;
      line-height: 8vw;
      padding-left: 0;
      color: #fff;
      font-size: 3.73333vw;
    }
    .mian .mian_content .mian_c_l .mian_nav_b ul li a:hover {
      color: #E60012;
    }
    .mian .mian_content .mian_c_l.active {
      position: fixed;
      left: 34.66667vw;
      top: 13.33333vw;
    }
    .mian .mian_content .mian_c_r {
      width: 100%;
      height: auto;
      margin-left: 0vw;
      padding: 4.8vw;
      background: #091520;
    }
    .mian .mian_content .mian_c_r.active {
      margin-left: 48vw;
    }
    .mian .mian_content .mian_c_r .mian_r_content {
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_title {
      color: #FFF;
      text-align: center;
      font-size: 5.33333vw;
      font-weight: 700;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t {
      width: 100%;
      height: auto;
      margin-top: 4vw;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_title {
      color: #FFF;
      text-align: center;
      font-size: 4.26667vw;
      font-weight: 400;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box {
      margin-top: 5.33333vw;
      width: 100%;
      height: auto;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item {
      width: 100%;
      height: auto;
      margin-bottom: 6.66667vw;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg {
      width: 100%;
      height: 62.8vw;
      overflow: hidden;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg:hover img {
      transform: scale(1);
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item .mian_r_c_itemimg img {
      transition: all 1s;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .mian .mian_content .mian_c_r .mian_r_content .mian_r_c_t .mian_r_c_box .mian_r_c_item p {
      text-align: left;
      margin-top: 2.66667vw;
      color: #FFF;
      font-size: 3.73333vw;
      font-weight: 400;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item {
      margin-top: 4vw;
      width: 100%;
      height: auto;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_title {
      color: #FFF;
      text-align: center;
      font-size: 4.26667vw;
      font-weight: 400;
      text-transform: uppercase;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item img {
      max-width: 100%;
      height: auto;
      margin-top: 2.66667vw;
    }
    .mian .mian_content .mian_c_r .mian_c_r_item .mian_c_item_desc {
      text-align: left;
      margin-top: 2.66667vw;
      color: #FFF;
      font-size: 3.73333vw;
      font-weight: 400;
    }
  }