.banner-container {
  width: 100%;
}

.banner-container > img {
  width: 100%;
  object-fit: cover;
}

.selection-container {
  width: 80%;
  min-height: 6.25rem;
  margin-left: 10%;
  margin-right: 10%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
  border-bottom: 1px solid rgb(238, 238, 238);
}

.selection-items {
  display: flex;
  flex-direction: row;
  align-items: center;
  min-height: 6.25rem;
  user-select: none;
}

.selection-item {
  display: flex;
  align-items: center;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  min-height: 6.25rem;
}

.selection-item:not(:last-child) {
  margin-right: 5rem;
}

.selection-item:hover {
  border-bottom: 3px solid rgb(253, 115, 32);
}

.selection-location {
  display: flex;
  flex-direction: row;
  align-items: center;
  user-select: none;
}

.selection-img {
  margin-right: 1.25rem;
  width: .9375rem;
  height: 1.3125rem;
}

.selection-img > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.selection-text {
  display: flex;
  flex-direction: row;
  align-items: center;
  user-select: none;
}

.selection-text > div:not(.divide) {
  cursor: pointer;
}

.selection-text > div:not(.divide):hover {
  color: rgb(253, 115, 32);
}


.selection-text > div:not(:last-child) {
  margin-right: .5rem;
}

@media screen and (max-width: 1200px) {
  .selection-items {
    flex-wrap: wrap;
    margin-top: 1.25rem;
  }

  .selection-item {
    font-size: 2rem;
    margin-bottom: 1.25rem;
  }

  .selection-text {
    font-size: 2rem;
  }

  .selection-img {
    margin-right: 1.25rem;
    width: 1.875rem;
    height: 2.625rem;
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
  }
  
  .selection-img > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

@media screen and (max-width: 666px) {
  .selection-item {
    font-size: 2.5rem;
  }

  .selection-text {
    font-size: 2.5rem;
  }
}

.introduction-container {
  width: 80%;
  margin-left: 10%;
  margin-right: 10%;
  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: 3rem;
  color: rgb(253, 115, 32);
  font-family: "MontserratAlternates";
  line-height: 1;
  font-weight: normal;
}

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

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

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

.introduction-sub-title {
  font-size: 1.875rem;
  font-family: "SourceHanSansSC";
  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;
  font-family: "SourceHanSansSC";
  color: rgb(85, 85, 85);
  line-height: 1.5;
}

.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: 80%;
  padding-left: 10%;
  padding-right: 10%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 6.875rem;
  padding-bottom: 6.875rem;
  background-color: rgb(245, 248, 250);
}

.development-title {
  font-size: 2.5rem;
  font-family: "SourceHanSansSC";
  color: rgb(51, 51, 51);
  font-weight: bold;
  margin-bottom: 4.375rem;
}

.development-box {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

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

.development-selection {
  width: 100%;
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

.development-selection-line {
  position: absolute;
  width: 100%;
  border-top: 1px rgb(203, 203, 203) solid;
  top: .7813rem;
}

.development-selection-item {
  z-index: 100;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  width: 100%;
  user-select: none;
}

.development-selection-item:hover > .development-selection-item-text {
  transition: .2s all;
  font-size: 1.5rem;
  color: rgb(253, 115, 32);
}

.development-selection-item-active {
  font-size: 1.5rem;
  color: rgb(253, 115, 32);
}

.development-selection-item-text {
  height: 1rem;
}

.development-content {
  width: 100%;
  display: none;
  flex-direction: row;
  justify-content: space-between;
  margin-top: 6.25rem;
  align-items: center;
}

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

.development-content-active {
  display: flex;
}

.development-content-img {
  width: 35%;
}

.development-content-text {
  width: 60%;
}

.development-content-img > img {
  width: 100%;
}

.development-content-title {
  font-size: 1.875rem;
  font-family: "SourceHanSansSC";
  color: rgb(51, 51, 51);
  font-weight: bold;
  display: flex;
  flex-direction: row;
  align-items: center;
}

.development-content-title > span {
  font-size: 10rem;
  font-family: "MontserratAlternates";
  color: rgba(255, 255, 255, 0.7);
  font-weight: bold;
  text-shadow: 0px 4px 10px rgba(6, 0, 1, 0.04);
  line-height: 0.8;
}


.development-content-line {
  background-color: rgb(253, 115, 32);
  width: 1.25rem;
  height: .25rem;
  margin-bottom: 3.125rem;
}


.development-content-introduction {
  font-size: .875rem;
  font-family: "SourceHanSansSC";
  color: rgb(136, 136, 136);
  line-height: 2.25;
}

.development-selection-reaction {
  display: none;
}

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

  .development-selection {
    display: none;
  }

  .development-contents {
    width: 100%;
  }

  .development-selection-item {
    justify-content: center;
    align-items: start;
  }

  .development-content-title > span {
    display: none;
  }

  .development-content-line {
    display: none;
  }

  .development-content-img {
    width: 100%;
  }

  .development-content {
    display: flex;
  }

  .development-content-text {
    width: 100%;
  }

  .development-selection-reaction {
    display: flex;
  }

  .development-selection-item {
    width: 15%;
  }

  .development-content {
    align-items: start;
  }
  
  .development-content-box {
    width: 85%;
    flex-wrap: wrap;
  }

  .development-selection-item-img {
    width: 3rem;
    height: 3rem;
  }
  
  .development-selection-item-text {
    font-size: 2.5rem !important;
  }
}

.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/about-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/about-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: cover;
}

.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;
  }
}

.member-container {
  width: 80%;
  padding-left: 10%;
  padding-right: 10%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  padding-top: 8.125rem;
  padding-bottom: 8.125rem;
  background-image: url(../images/about-member-background.png);
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

.member-group {
  width: 30%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.member-list {
  width: 60%;
}

.member-group-logo {
  margin-bottom: 2.875rem;
}

.member-group-logo > img {
  width: 45%;
  object-fit: cover;
}

.member-group-name {
  margin-bottom: 16.25rem;
}

.member-group-name > img {
  width: 45%;
}

.member-title {
  font-size: 2.5rem;
  font-family: "SourceHanSansSC";
  color: rgb(51, 51, 51);
  font-weight: bold;
  margin-bottom: 6.25rem;
}

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

.member-list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
}

.member-list-item {
  width: 40%;
  background-image: -moz-linear-gradient( -90deg, rgb(250,250,250) 0%, rgb(244,244,244) 54%, rgb(237,237,237) 100%);
  background-image: -webkit-linear-gradient( -90deg, rgb(250,250,250) 0%, rgb(244,244,244) 54%, rgb(237,237,237) 100%);
  background-image: -ms-linear-gradient( -90deg, rgb(250,250,250) 0%, rgb(244,244,244) 54%, rgb(237,237,237) 100%);
  height: 6.25rem;
  display: flex;
  padding-left: 3.5rem;
  align-items: center;
  font-size: 1.25rem;
  font-family: "SourceHanSansSC";
  color: rgb(85, 85, 85);
}

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

  .member-container {
    flex-wrap: wrap;
  }

  .member-group {
    width: 100%;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .member-list {
    width: 100%;
  }

  .member-group-name {
    display: none;
  }
  
  .member-group-logo {
    margin: 0;
    display: none;
  }

  .member-title {
    margin: 0;
    margin-bottom: 5rem;
  }

  .member-list-item {
    margin-bottom: 2rem;
  }

  .member-group-name {
    margin: 0;
  }
}

@media screen and (max-width: 1000px) {
  .member-list-item {
    height: 8rem;
    font-size: 1.75rem;
  }
}

@media screen and (max-width: 666px) { 
  .member-list-item {
    width: 100%;
    height: 10rem;
    font-size: 2rem;
  }
}

.culture-container {
  width: 80%;
  padding-left: 10%;
  padding-right: 10%;
  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;
  font-family: "SourceHanSansSC";
  color: rgb(255, 255, 255);
  font-weight: bold;
}

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

.culture-sub-title {
  display: none;
}

.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;
  font-family: "SourceHanSansSC";
  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;
  font-family: "SourceHanSansSC";
  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;
  }
  
}