.banner {
  width: 100%;
  height: 680px;
  position: relative;
}

.banner .banner_img {
  width: 100%;
  height: 680px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

.banner .banner_box {
  z-index: 2;
  width: 1394px;
  height: 150px;
  background: rgba(0, 0, 0, 0.4);
  position: absolute;
  bottom: 40px;
  left: 0;
}

.banner .banner_box .banner_content {
  padding: 20px;
  display: flex;
  flex-direction: row;
  align-items: center;
}

.banner .banner_box .banner_content .banner_item {
  margin-right: 12px;
  width: 142px;
  height: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.banner .banner_box .banner_content .banner_item a {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.banner .banner_box .banner_content .banner_item a .banner_item_img {
  width: 100%;
  height: 80px;
  overflow: hidden;
}

.banner .banner_box .banner_content .banner_item a .banner_item_img:hover img {
  transform: scale(1.2);
}

.banner .banner_box .banner_content .banner_item a .banner_item_img img {
  transition: all 1s;
  width: 100%;
  height: 100%;
}

.banner .banner_box .banner_content .banner_item a p {
  line-height: 22px;
  margin-top: 8px;
  font-size: 14px;
  color: #ffffff;
  text-overflow: -o-ellipsis-lastline;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
}

.banner .banner_box .banner_content .swiper-button-next:after {
  content: '';
  width: 30px !important;
  height: 31px;
}

.banner .banner_box .banner_content .swiper-button-next:after {
  cursor: pointer;
  background: url(../img/about/com_next.png) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  right: 20px;
}

.banner .banner_box .banner_content .swiper-button-next {
  top: 40%;
  right: 0;
}

.banner .banner_box .banner_content .swiper-button-next.swiper-button-disabled {
  cursor: pointer;
  opacity: 1;
}

.banner .banner_box .banner_box_title {
  font-size: 14px;
  line-height: 22px;
  color: #ffffff;
  position: absolute;
  bottom: 20px;
  right: 20px;
}

.mian {
  width: 100%;
  height: auto;
  padding: 160px 0 0 0;
  background: #ffffff;
}

.mian .mian_item {
  margin-bottom: 96px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  width: 100%;
  height: auto;
  padding: 24px 0 24px 50px;
  background: #FFFFFF;
  box-shadow: 0px 0px 14px rgba(234, 234, 234, 0.75);
}

.mian .mian_item .mian_item_left {
  width: 628px;
  height: auto;
}

.mian .mian_item .mian_item_left .mian_item_title {
  text-align: justify;
  margin-top: 24px;
  font-style: normal;
  font-weight: 400;
  font-size: 42px;
  line-height: 44px;
  color: #1F3144;
}

.mian .mian_item .mian_item_left .mian_item_desc {
  margin-top: 20px;
  text-align: justify;
  font-style: normal;
  font-weight: 400;
  font-size: 16px;
  line-height: 24px;
  color: #1F3144;
}

.mian .mian_item .mian_item_left .mian_item_box {
  width: 100%;
  height: auto;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}

.mian .mian_item .mian_item_left .mian_item_box a {
  margin-top: 30px;
  width: 50%;
  display: flex;
  flex-direction: row;
  align-items: center;
}

.mian .mian_item .mian_item_left .mian_item_box a:hover p {
  color: #96c8f0;
}

.mian .mian_item .mian_item_left .mian_item_box a img {
  width: 38px;
  height: 38px;
}

.mian .mian_item .mian_item_left .mian_item_box a p {
  margin-left: 10px;
  font-style: normal;
  font-weight: 400;
  font-size: 13px;
  line-height: 21px;
  color: #1F3144;
}

.mian .mian_item .mian_item_right {
  width: 728px;
  height: 453px;
}

.mian .mian_item .mian_item_right img {
  width: 100%;
  height: 100%;
}

@media screen and (max-width: 1600px) {
  .banner {
    width: 100%;
    height: 36.125vw;
    position: relative;
  }
  .banner .banner_img {
    width: 100%;
    height: 36.125vw;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
  }
  .banner .banner_box {
    z-index: 2;
    width: 74.05625vw;
    height: 7.96875vw;
    background: rgba(0, 0, 0, 0.4);
    position: absolute;
    bottom: 2.125vw;
    left: 0;
  }
  .banner .banner_box .banner_content {
    padding: 1.0625vw;
    display: flex;
    flex-direction: row;
    align-items: center;
  }
  .banner .banner_box .banner_content .banner_item {
    margin-right: 0.6375vw;
    width: 7.54375vw;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .banner .banner_box .banner_content .banner_item a {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .banner .banner_box .banner_content .banner_item a .banner_item_img {
    width: 100%;
    height: 4.25vw;
  }
  .banner .banner_box .banner_content .banner_item a .banner_item_img img {
    width: 100%;
    height: 100%;
  }
  .banner .banner_box .banner_content .banner_item a p {
    line-height: 1.16875vw;
    margin-top: 0.425vw;
    font-size: 0.74375vw;
    color: #ffffff;
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
  }
  .banner .banner_box .banner_content .swiper-button-next:after {
    content: '';
    width: 1.59375vw !important;
    height: 1.64687vw;
  }
  .banner .banner_box .banner_content .swiper-button-next:after {
    cursor: pointer;
    background: url(../img/about/com_next.png) no-repeat;
    background-size: 100% 100%;
    position: absolute;
    right: 1.0625vw;
  }
  .banner .banner_box .banner_content .swiper-button-next {
    top: 40%;
    right: 0;
  }
  .banner .banner_box .banner_content .swiper-button-next.swiper-button-disabled {
    cursor: pointer;
    opacity: 1;
  }
  .banner .banner_box .banner_box_title {
    font-size: 0.74375vw;
    line-height: 1.16875vw;
    color: #ffffff;
    position: absolute;
    bottom: 1.0625vw;
    right: 1.0625vw;
  }
  .mian {
    width: 100%;
    height: auto;
    padding: 8.5vw 0 0 0;
    background: #ffffff;
  }
  .mian .mian_item {
    margin-bottom: 5.1vw;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    height: auto;
    padding: 1.275vw 0 1.275vw 2.65625vw;
    background: #FFFFFF;
    box-shadow: 0vw 0vw 0.74375vw rgba(234, 234, 234, 0.75);
  }
  .mian .mian_item .mian_item_left {
    width: 33.3625vw;
    height: auto;
  }
  .mian .mian_item .mian_item_left .mian_item_title {
    text-align: justify;
    margin-top: 1.275vw;
    font-style: normal;
    font-weight: 400;
    font-size: 2.23125vw;
    line-height: 2.3375vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_left .mian_item_desc {
    margin-top: 1.0625vw;
    text-align: justify;
    font-style: normal;
    font-weight: 400;
    font-size: 0.85vw;
    line-height: 1.275vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_left .mian_item_box {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .mian .mian_item .mian_item_left .mian_item_box a {
    margin-top: 1.59375vw;
    width: 50%;
    display: flex;
    flex-direction: row;
    align-items: center;
  }
  .mian .mian_item .mian_item_left .mian_item_box a:hover p {
    color: #96c8f0;
  }
  .mian .mian_item .mian_item_left .mian_item_box a img {
    width: 2.01875vw;
    height: 2.01875vw;
  }
  .mian .mian_item .mian_item_left .mian_item_box a p {
    margin-left: 0.53125vw;
    font-style: normal;
    font-weight: 400;
    font-size: 0.69062vw;
    line-height: 1.11562vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_right {
    width: 38.675vw;
    height: 24.06563vw;
  }
  .mian .mian_item .mian_item_right img {
    width: 100%;
    height: 100%;
  }
}

@media screen and (max-width: 1023px) {
  body, html {
    overflow: auto;
    height: auto;
    width: 100%;
    -webkit-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
    -moz-text-size-adjust: 100% !important;
  }
  .banner {
    width: 100%;
    height: 181.33333vw;
    position: relative;
  }
  .banner .banner_img {
    width: 100%;
    height: 181.33333vw;
    position: absolute;
    top: 0;
    left: 0;
  }
  .banner .banner_box {
    z-index: 2;
    width: 100%;
    height: 31.73333vw;
    background: rgba(0, 0, 0, 0.4);
    position: absolute;
    bottom: 5.33333vw;
    left: 0;
  }
  .banner .banner_box .banner_content {
    margin-right: 32vw;
    width: 60vw;
    padding: 5.33333vw;
    display: flex;
    flex-direction: row;
    align-items: center;
  }
  .banner .banner_box .banner_content .banner_item {
    margin-right: 2.13333vw;
    width: 26.66667vw;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }
  .banner .banner_box .banner_content .banner_item a {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .banner .banner_box .banner_content .banner_item a .banner_item_img {
    width: 100%;
    height: 14.93333vw;
  }
  .banner .banner_box .banner_content .banner_item a .banner_item_img img {
    width: 100%;
    height: 100%;
  }
  .banner .banner_box .banner_content .banner_item a p {
    width: 21.6vw;
    line-height: 5.86667vw;
    margin-top: 2.13333vw;
    font-size: 3.73333vw;
    color: #ffffff;
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
  }
  .banner .banner_box .swiper-button-next:after {
    content: '';
    width: 4vw !important;
    height: 4.13333vw;
  }
  .banner .banner_box .swiper-button-next:after {
    cursor: pointer;
    background: url(../img/about/com_next.png) no-repeat;
    background-size: 100% 100%;
    position: absolute;
    right: 5.33333vw;
  }
  .banner .banner_box .swiper-button-next {
    top: 40%;
    right: 0;
  }
  .banner .banner_box .swiper-button-next.swiper-button-disabled {
    cursor: pointer;
    opacity: 1;
  }
  .banner .banner_box .banner_box_title {
    margin-left: 10.4vw;
    font-size: 3.73333vw;
    line-height: 5.86667vw;
    color: #ffffff;
    position: absolute;
    bottom: 5.33333vw;
    right: 5.33333vw;
  }
  .mian {
    width: 100%;
    height: auto;
    padding: 10.66667vw 0 0 0;
    background: #ffffff;
  }
  .mian .mian_item {
    margin-bottom: 12.8vw;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 100%;
    height: auto;
    padding: 3.2vw 3.2vw 3.2vw 6.66667vw;
    background: #FFFFFF;
    box-shadow: 0vw 0vw 1.86667vw rgba(234, 234, 234, 0.75);
  }
  .mian .mian_item .mian_item_left {
    width: 100%;
    height: auto;
  }
  .mian .mian_item .mian_item_left .mian_item_title {
    text-align: justify;
    margin-top: 3.2vw;
    font-style: normal;
    font-weight: 400;
    font-size: 5.33333vw;
    line-height: 7.73333vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_left .mian_item_desc {
    margin-top: 3.2vw;
    text-align: justify;
    font-style: normal;
    font-weight: 400;
    font-size: 3.73333vw;
    line-height: 5.86667vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_left .mian_item_box {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .mian .mian_item .mian_item_left .mian_item_box a {
    margin-top: 4.26667vw;
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
  }
  .mian .mian_item .mian_item_left .mian_item_box a:hover p {
    color: #96c8f0;
  }
  .mian .mian_item .mian_item_left .mian_item_box a img {
    width: 7.6vw;
    height: 7.6vw;
  }
  .mian .mian_item .mian_item_left .mian_item_box a p {
    margin-left: 3.2vw;
    font-style: normal;
    font-weight: 400;
    font-size: 3.46667vw;
    line-height: 5.6vw;
    color: #1F3144;
  }
  .mian .mian_item .mian_item_right {
    margin-top: 5.86667vw;
    width: 100%;
    height: 60.4vw;
  }
  .mian .mian_item .mian_item_right img {
    width: 100%;
    height: 100%;
  }
}