.companyIntroduction {
  padding: 100px 0;
  background: #fff;
  background: #fff;
}

.companyIntroduction .companyIntroduction_cen {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap-reverse;
}

.companyIntroduction .companyIntroduction_l {
  width: 46%;
}

.about_title {
  font-size: 40px;
  line-height: 48px;
  color: #141414;
  font-weight: 500;
}

.companyIntroduction .companyIntroduction_text {
  margin-top: 30px;
  font-size: 16px;
  line-height: 2;
  color: #666666;
  font-weight: 500;
  text-indent: 2em;
}

.companyIntroduction .companyIntroduction_r {
  width: 48.75%;
  border-radius: 16px;
  overflow: hidden;
}

.companyIntroduction .companyIntroduction_r img {
  display: block;
  width: 100%;
  transition: all 0.3s ease;
}

.companyIntroduction .companyIntroduction_r:hover img {
  transform: scale(1.05);
}

.aboutVideo {
  position: relative;
  width: 100%;
}

.aboutVideo #videoPlayer {
  aspect-ratio: 1920/800;
  display: block;
  max-width: 100%;
  max-height: 100%;
}

.aboutVideo .aboutVideo_play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #fff;
  background: rgba(255, 255, 255, 0.3);
  color: #fff;
  font-size: 60px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.aboutVideo .aboutVideo_play .iconfont {
  font-size: 50px;
  display: block;
  line-height: 1;
}

.aboutVideo .aboutVideo_play:hover {
  transform: scale(1.2);
  opacity: 0.7;
}

.corporateCulture {
  width: 100%;
  background: #fff;
  padding: 100px 0 100px;
}

.corporateCulture .about_title {
  text-align: center;
}

.corporateCulture .corporateCulture_bom {
  display: flex;
  flex-wrap: wrap;
}

.corporateCulture .corporateCulture_bom .corporateCulture_box {
  margin-top: 30px;
  width: 31.25%;
  margin-right: 3.125%;
  border-radius: 16px;
  position: relative;
  aspect-ratio: 500/260;
}

.corporateCulture .corporateCulture_bom .corporateCulture_box:nth-child(3n) {
  margin-right: 0;
}

.corporateCulture_box .corporateCulture_bj img {
  display: block;
  width: 100%;
  object-fit: cover;
  min-height: 100%;
}

.corporateCulture_box .box_cen {
  width: 96%;
  position: absolute;
  left: 50%;
  top: 60px;
  text-align: center;
  transform: translateX(-50%);
}

.corporateCulture_box .name {
  text-align: center;
  font-size: 24px;
  line-height: 1.2;
  color: #fff;
  font-weight: 500;
}

.corporateCulture_box .text {
  font-size: 30px;
  line-height: 48px;
  font-weight: 500;
  color: #fff;
  text-align: center;
  margin-top: 30px;
}

.developmentHistory {
  width: 100%;
}

.developmentHistory .about_title {
  text-align: center;
}

.developmentHistory .developmentHistory_bom {
  width: 100%;
  margin-top: 30px;
}

.developmentHistory .developmentHistory_t {
  width: 100%;
}

.developmentHistory .developmentHistory_t .mySwiper2 {
  width: 100%;
}

.developmentHistory_box {
  width: 100%;
  display: flex;
  justify-content: space-between;
}

.developmentHistory_box .developmentHistory_L {
  width: 51.25%;
  padding-left: 5.2vw;
  padding-top: 42px;
  position: relative;
  z-index: 2;
}

.developmentHistory_box .developmentHistory_L .title {
  font-size: 30px;
  line-height: 1.5;
  font-weight: bold;
  color: #141414;
}

.developmentHistory_box .developmentHistory_L .text {
  margin-top: 16px;
  font-size: 20px;
  line-height: 36px;
  color: #666666;
}

.titIco {
  position: absolute;
  right: 0;
  bottom: 24px;
  font-size: 100px;
  font-weight: bold;
  color: #efefef;
  z-index: -1;
  line-height: 1;
}

.developmentHistory_box .developmentHistory_r {
  width: 42.5%;
  border-radius: 16px;
  overflow: hidden;
}

.developmentHistory_box .developmentHistory_r img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.developmentHistory .developmentHistory_b {
  margin-top: 50px;
  position: relative;
  border-top: 1px solid #e6e6e6;
}

.developmentHistory .developmentHistory_b .mySwiper {
  width: 700px;
  margin: 0 auto;
  max-width: 100%;
}

.developmentHistory .developmentHistory_b .mySwiper .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
}

.developmentHistory_bBox {
  display: flex;
  align-items: center;
  justify-content: baseline;
  padding-top: 18px;
  font-size: 18px;
  font-weight: 500;
  color: #9a9a9a;
}

.swiper-slide-thumb-active .developmentHistory_bBox {
  color: #81ccdb;
  border-top: 1px solid #81ccdb;
}

.developmentHistory .developmentHistory_b .swiper-button-next:after,
.developmentHistory .developmentHistory_b .swiper-button-prev:after {
  font-size: 18px;
  color: #141414;
  transition: all 0.3s ease;
  padding-top: 9px;
}

.Qualification {
  padding: 100px 0;
  background: #f8f9fa;
}

.Qualification .about_title {
  text-align: center;
}

.Qualification .Qualification_bom {
  margin-top: 36px;
  position: relative;
}

.Qualification .Qualification_bom .mySwiper {
  padding-bottom: 50px;
  width: 780px;
  max-width: 100%;
  margin: 0 auto;
  padding-bottom: 50px;
}

.Qualification .Qualification_bom .mySwiper .swiper-pagination-bullet {
  width: 14px;
  height: 14px;
  background: #81ccdb;
}

.Qualification_bom .Qualification .Qualification_box {
  width: 100%;
}

.Qualification_box .Qualification_prc {
  width: 100%;
  aspect-ratio: 370/300;
  background: #fff;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.Qualification_box .Qualification_prc img {
  display: block;
  max-width: 90%;
  max-height: 100%;
  object-fit: contain;
}

.Qualification_box .Qualification_name {
  text-align: center;
  margin-top: 10px;
  font-size: 18px;
  line-height: 26px;
  color: #333333;
}

/* 响应式设计 */
@media screen and (max-width: 1500px) {
  .about_title {
    font-size: 38px;
    line-height: 46px;
  }

  .companyIntroduction {
    padding: 90px 0;
  }

  .corporateCulture {
    padding: 90px 0 90px;
  }

  .developmentHistory_box .developmentHistory_L .title {
    font-size: 28px;
  }

  .developmentHistory_box .developmentHistory_L .text {
    font-size: 19px;
    line-height: 34px;
  }

  .titIco {
    font-size: 90px;
  }
}

@media screen and (max-width: 1400px) {
  .about_title {
    font-size: 36px;
    line-height: 44px;
  }

  .companyIntroduction {
    padding: 85px 0;
  }

  .corporateCulture {
    padding: 85px 0 85px;
  }

  .developmentHistory_box .developmentHistory_L .title {
    font-size: 26px;
  }

  .developmentHistory_box .developmentHistory_L .text {
    font-size: 18px;
    line-height: 32px;
  }

  .titIco {
    font-size: 80px;
  }

  .corporateCulture_box .text {
    font-size: 28px;
    line-height: 44px;
  }
}

@media screen and (max-width: 1200px) {
  .about_title {
    font-size: 34px;
    line-height: 42px;
  }

  .companyIntroduction {
    padding: 80px 0;
  }

  .corporateCulture {
    padding: 80px 0 80px;
  }

  .companyIntroduction .companyIntroduction_l,
  .companyIntroduction .companyIntroduction_r {
    width: 100%;
  }

  .companyIntroduction .companyIntroduction_r {
    margin-top: 30px;
  }

  .corporateCulture .corporateCulture_bom .corporateCulture_box {
    width: 48%;
    margin-right: 4%;
  }

  .corporateCulture .corporateCulture_bom .corporateCulture_box:nth-child(2n) {
    margin-right: 0;
  }

  .corporateCulture .corporateCulture_bom .corporateCulture_box:nth-child(3n) {
    margin-right: 4%;
  }

  .corporateCulture_box .text {
    font-size: 26px;
    line-height: 40px;
  }

  .developmentHistory_box {
    flex-direction: column;
  }

  .developmentHistory_box .developmentHistory_L,
  .developmentHistory_box .developmentHistory_r {
    width: 100%;
  }

  .developmentHistory_box .developmentHistory_L {
    padding: 30px 20px;
  }

  .developmentHistory_box .developmentHistory_r {
    margin-top: 20px;
  }

  .titIco {
    font-size: 70px;
    right: 20px;
  }

  .Qualification {
    padding: 90px 0;
  }
}

@media screen and (max-width: 992px) {
  .about_title {
    font-size: 32px;
    line-height: 40px;
  }

  .companyIntroduction {
    padding: 75px 0;
  }

  .corporateCulture {
    padding: 75px 0 75px;
  }

  .companyIntroduction .companyIntroduction_text {
    margin-top: 20px;
    font-size: 15px;
    line-height: 1.9;
  }

  .corporateCulture_box .name {
    font-size: 22px;
  }

  .corporateCulture_box .text {
    font-size: 24px;
    line-height: 36px;
    margin-top: 25px;
  }

  .developmentHistory_box .developmentHistory_L .title {
    font-size: 24px;
  }

  .developmentHistory_box .developmentHistory_L .text {
    font-size: 17px;
    line-height: 30px;
  }

  .titIco {
    font-size: 60px;
  }

  .Qualification {
    padding: 80px 0;
  }

  .Qualification .Qualification_bom .mySwiper {
    width: 100%;
  }

  .Qualification_box .Qualification_prc {
    aspect-ratio: 320/280;
  }
}

@media screen and (max-width: 768px) {
  .about_title {
    font-size: 28px;
    line-height: 36px;
  }

  .companyIntroduction {
    padding: 70px 15px;
  }

  .corporateCulture {
    padding: 70px 15px 70px;
  }

  .companyIntroduction .companyIntroduction_text {
    font-size: 14px;
    line-height: 1.8;
    text-indent: 0;
  }

  .aboutVideo .aboutVideo_play {
    width: 80px;
    height: 80px;
    font-size: 50px;
  }

  .aboutVideo .aboutVideo_play .iconfont {
    font-size: 40px;
  }

  .corporateCulture .corporateCulture_bom .corporateCulture_box {
    width: 100%;
    margin-right: 0;
    margin-top: 25px;
  }

  .corporateCulture .corporateCulture_bom .corporateCulture_box:nth-child(3n) {
    margin-right: 0;
  }

  .corporateCulture_box .name {
    font-size: 20px;
  }

  .corporateCulture_box .text {
    font-size: 22px;
    line-height: 32px;
    margin-top: 20px;
  }

  .developmentHistory_box .developmentHistory_L {
    padding: 25px 15px;
  }

  .developmentHistory_box .developmentHistory_L .title {
    font-size: 22px;
  }

  .developmentHistory_box .developmentHistory_L .text {
    font-size: 16px;
    line-height: 28px;
  }

  .titIco {
    font-size: 50px;
    right: 10px;
    bottom: 15px;
  }

  .developmentHistory .developmentHistory_b .mySwiper {
    width: 100%;
  }

  .developmentHistory_bBox {
    font-size: 16px;
  }

  .Qualification {
    padding: 70px 15px;
  }

  .Qualification .Qualification_bom {
    margin-top: 25px;
  }

  .Qualification_bom .Qualification_box {
    padding: 0 10px;
  }

  .Qualification_box .Qualification_prc {
    aspect-ratio: 280/250;
    padding: 15px;
  }

  .Qualification_box .Qualification_name {
    font-size: 16px;
    line-height: 24px;
  }

  .mbx {
    padding: 0 15px;
  }

  .mbx ul {
    padding: 10px 0;
  }

  .mbx ul li a {
    font-size: 14px;
  }
}

@media screen and (max-width: 576px) {
  .about_title {
    font-size: 24px;
    line-height: 32px;
  }

  .companyIntroduction {
    padding: 60px 10px;
  }

  .corporateCulture {
    padding: 60px 10px 60px;
  }

  .companyIntroduction .companyIntroduction_text {
    font-size: 13px;
    line-height: 1.7;
  }

  .aboutVideo .aboutVideo_play {
    width: 70px;
    height: 70px;
    font-size: 45px;
  }

  .aboutVideo .aboutVideo_play .iconfont {
    font-size: 35px;
  }

  .corporateCulture_box .name {
    font-size: 18px;
  }

  .corporateCulture_box .text {
    font-size: 20px;
    line-height: 30px;
    margin-top: 18px;
  }

  .corporateCulture_box .box_cen {
    top: 40px;
  }

  .developmentHistory_box .developmentHistory_L .title {
    font-size: 20px;
  }

  .developmentHistory_box .developmentHistory_L .text {
    font-size: 15px;
    line-height: 26px;
    margin-top: 12px;
  }

  .titIco {
    font-size: 40px;
    right: 5px;
    bottom: 10px;
  }

  .developmentHistory_bBox {
    font-size: 14px;
    padding-top: 15px;
  }

  .Qualification {
    padding: 60px 10px;
  }

  .Qualification .Qualification_bom {
    margin-top: 20px;
  }

  .Qualification_box .Qualification_prc {
    aspect-ratio: 240/220;
    padding: 10px;
  }

  .Qualification_box .Qualification_name {
    font-size: 15px;
    line-height: 22px;
    margin-top: 8px;
  }

  .developmentHistory .developmentHistory_b .swiper-button-next:after,
  .developmentHistory .developmentHistory_b .swiper-button-prev:after {
    font-size: 16px;
  }
}