.introduction-container {
  width: 84%;
  margin-left: 8%;
  margin-right: 8%;
  display: flex;
  flex-direction: row;
  margin-top: 6.875rem;
  margin-bottom: 6.875rem;
  justify-content: space-between;
}

.introduction-img {
  width: 47.5%;
}

.introduction-text {
  width: 47.5%;
}

.introduction-quantization-reaction {
  display: none !important;
}

.introduction-img > img {
  width: 100%;
}

.introduction-quantization {
  display: flex;
  flex-direction: row;
  margin-top: 3.125rem;
}

.introduction-quantization-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.introduction-quantization-item:not(:last-child) {
  padding-right: 10%;
}

.introduction-quantization-item-img {
  width: 3.125rem;
  height: 3.125rem;
  margin-bottom: 1.5625rem;
}

.introduction-quantization-item-img > img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.introduction-quantization-item-number {
  font-size: 2.75rem;
  color: rgb(253, 115, 32);
  line-height: 1;
  font-weight: normal;
}

.introduction-quantization-item-number > span {
  font-size: .875rem;
  margin-left: .25rem;
}

.introduction-quantization-item-title {
  font-size: 1rem;
  color: rgb(136, 136, 136);
}

.introduction-title {
  font-size: 2.5rem;
  color: rgb(51, 51, 51);
  font-weight: bolder;
  margin-bottom: 1.875rem;
}

.introduction-sub-title {
  font-size: 1.875rem;
  color: rgb(253, 115, 32);
  font-weight: bold;
  margin-bottom: 2.5rem;
}

.introduction-title-line {
  background-color: rgb(229, 229, 229);
  height: 1px;
  margin-bottom: 1.875rem;
}

.introduction-content {
  font-size: .9375rem;
  color: rgb(85, 85, 85);
  line-height: 2.25;
}

.introduction-text > img {
  width: 100%;
}

@media screen and (max-width: 1200px) {
  .introduction-img {
    display: none;
  }
  
  .introduction-text {
    width: 100%;
  }

  .introduction-quantization-reaction {
    display: flex !important;
  }

  .introduction-title {
    font-size: 5rem;
  }
  
  .introduction-sub-title {
    font-size: 3rem;
  }

  .introduction-content {
    font-size: 2rem;
  }
}

.development-container {
  width: 84%;
  padding: 8%;
  padding-right: 8%;
  padding-top: 6.875rem;
  padding-bottom: 6.875rem;
  background-color: rgb(242, 244, 246);
}

.development-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 100px;
  font-weight: bold;
  color: rgb(211, 96, 29);
}

.development-list {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.development-list-item {
  width: 24%;
  background-color: white;
  cursor: pointer;
  transition: all .2s;
  height: 20rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.development-list-item-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding-left: 2rem;
  padding-right: 2rem;
}

.development-list-item:hover {
  color: whitesmoke;
  background-color: rgb(254, 108, 34);
}

.development-icon {
  font-size: 4.625rem;
  color: rgb(211, 65, 29);
  transition: all .2s;
}

.development-list-item:hover .development-icon {
  color: whitesmoke;
}

.development-text {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.development-content {
  font-size: .75rem;
  text-align: center;
}

@media screen and (max-width: 1920px) {  
  .development-title {
    font-size: 48px;
  }
  
  .development-list-item {
    height: 380px;
  }
  
  .development-list-item-box {
    padding-left: 40px;
    padding-right: 40px;
  }
  
  .development-icon {
    font-size: 80px;
  }
  
  .development-text {
    font-size: 22px;
    margin-bottom: 20px;
  }
  
  .development-content {
    font-size: 14px;
  }
}

@media screen and (max-width: 1300px) {
  .development-list {
    flex-wrap: wrap;
  }

  .development-list-item {
    width: 49%;
    margin-bottom: 20px;
  }
}

@media screen and (max-width: 700px) {
  .development-list-item {
    width: 100%;
    height: 300px;
  }
}

.certificate-container {
  width: 80%;
  padding-left: 10%;
  padding-right: 10%;
  display: flex;
  flex-direction: column;
  padding-top: 6.25rem;
  padding-bottom: 6.25rem;
  background-image: url(../images/cert-background.png);
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

.certificate-title-box {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.certificate-title {
  font-size: 2.5rem;
  font-family: "SourceHanSansSC";
  color: rgb(51, 51, 51);
  font-weight: bold;
}

.certificate-title > span {
  color: rgb(253, 115, 32);
}

.certificate-category {
  font-size: 1.5rem;
  font-family: "SourceHanSansSC";
  color: rgb(102, 102, 102);
  display: flex;
  flex-direction: row;
  align-items: center;
}

.certificate-category > div:not(:last-child) {
  margin-right: 2.5rem;
}

.certificate-category > div:not(.certificate-category-item-divide) {
  cursor: pointer;
}

.certificate-category > div:not(.certificate-category-item-divide):hover {
  color: rgb(253, 115, 32);
}

.certificate-category-item-active {
  color: rgb(253, 115, 32);
}

.cert-swiper {
  width: calc(100% - 7.5rem);
  margin-top: 9.375rem;
  user-select: none;
  position: relative;
  padding-left: 3.75rem;
  padding-right: 3.75rem;
  display: none;
}

.cert-swiper-active {
  display: block;
}

.certificate-img {
  background-image: url(../images/cert-outline.png);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  padding-top: 9%;
  padding-bottom: 9%;
  padding-left: 10%;
  padding-right: 10%;
}

.certificate-img > img {
  width: 100%;
  object-fit: contain;
}

.cert-swiper-btn {
  position: absolute;
  cursor: pointer;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  width: 3.125rem;
  height: 3.125rem;
  top: 35%;
}

.cert-swiper-prev {
  left: -3.125rem;
  background-image: url(../images/honor-left.png);
}

.cert-swiper-next {
  right: -3.125rem;
  background-image: url(../images/honor-right.png);
}

.cert-swiper-selection {
  display: flex;
  flex-direction: row;
  justify-content: center;
  margin-top: 5.625rem;
}

.cert-swiper-selection-item {
  width: .625rem;
  height: .625rem;
  border-radius: 50%;
  background-color: rgb(136, 136, 136);
  cursor: pointer;
}

.cert-swiper-selection-item:not(:last-child) {
  margin-right: 1rem;
}

.cert-swiper-selection-item-active {
  transition: all .3s ease;
  width: 2.5rem;
  background-color: rgb(253, 115, 32);
  border-radius: .625rem;
}

@media screen and (max-width: 1200px) {
  .certificate-title {
    font-size: 4rem;
  }  

  .certificate-category {
    font-size: 2.5rem;
  }

  .cert-swiper-btn {
    width: 5rem;
    height: 5rem;
  }

  .cert-swiper-selection-item {
    width: 1rem;
    height: 1rem;
  }
}
.culture-container {
  width: 84%;
  padding-left: 8%;
  padding-right: 8%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 6.25rem;
  padding-bottom: 8.75rem;
  margin-bottom: 23.75rem;
  background-image: url(../images/about-culture-background.png);
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
  height: 30rem;
}

.culture-title {
  font-size: 2.5rem;
  color: rgb(255, 255, 255);
  font-weight: bold;
}

.culture-title > span {
  color: rgb(253, 115, 32);
}

.culture-sub-title {
  font-size: 3.25rem;
  color: rgb(255, 255, 255);
  margin-top: 4.125rem;
}

.culture-title-img {
  margin-top: 4.125rem;
  width: 3.125rem;
}

.culture-title-img > img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.culture-list {
  width: 80%;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  border-radius: 1rem;
  background-color: rgb(255, 255, 255);
  box-shadow: 0px 9px 32px 0px rgba(6, 0, 1, 0.1);
  height: 31.25rem;
  position: absolute;
  bottom: -15.625rem;
}

.culture-list-item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex: 1;
  padding-left: 5rem;
  padding-right: 5rem;
}

.culture-list-item-title {
  font-size: 1.625rem;
  color: rgb(51, 51, 51);
}

.culture-list-item-img {
  margin-top: 3.125rem;
  margin-bottom: 4.375rem;
  width: 8.75rem;
}

.culture-list-item-img > img {
  width: 100%;
  object-fit: cover;
}

.culture-list-item-content {
  font-size: 1.125rem;
  color: rgb(102, 102, 102);
  text-align: center;
}

@media screen and (max-width: 1200px) {
  .culture-title {
    font-size: 4rem;
  }
}

@media screen and (max-width: 1100px) {
  .culture-container {
    margin-bottom: 140%;
  }

  .culture-list {
    flex-direction: column;
    height: 200%;
    bottom: -180%;
  }

  .culture-list-item-title {
    font-size: 2.5rem;
  }

  .culture-list-item-content {
    font-size: 1.5rem;
  }
}