.section1 {
  background-color: #EFF8FF;
  padding: 89px 0;
}
.section1 .box .title .img {
  display: block;
  width: 23.25rem;
}
.section1 .box .list {
  margin-top: 92px;
}
.section1 .box .list .item .head {
  display: flex;
}
.section1 .box .list .item .head .lb {
  margin-right: 2rem;
}
.section1 .box .list .item .head .lb .img {
  display: block;
  width: 6.0625rem;
  height: 6.0625rem;
}
.section1 .box .list .item .head .rb .eng {
  font-size: 15px;
  font-family: FZLTHJW;
  color: #676768;
  letter-spacing: 2px;
}
.section1 .box .list .item .head .rb .chin {
  margin-top: 0.5rem;
  font-size: 26px;
  font-family: FZLTTHJW;
  font-weight: 700;
  color: #0062B1;
  line-height: 18px;
}
.section1 .box .list .item:nth-child(1) .foot {
  background: url(https://keshunfile.e-dou.com.cn/keshunWeb2024/keshunCN/PC/images/introduce/pic3-3.png?x-oss-process=image/resize,m_lfit,w_1200,image/format,webp) no-repeat center center;
}
.section1 .box .list .item:nth-child(2) .foot {
  justify-content: flex-end;
  background: url(https://keshunfile.e-dou.com.cn/keshunWeb2024/keshunCN/PC/images/introduce/pic3-5.png?x-oss-process=image/resize,m_lfit,w_1200,image/format,webp) no-repeat center center;
}
.section1 .box .list .item:nth-child(3) .foot {
  background: url(https://keshunfile.e-dou.com.cn/keshunWeb2024/keshunCN/PC/images/introduce/pic3-7.png?x-oss-process=image/resize,m_lfit,w_1200,image/format,webp) no-repeat center center;
}
.section1 .box .list .item:nth-child(n+2) {
  margin-top: 116px;
}
.section1 .box .list .item .foot {
  display: flex;
  align-items: center;
  margin-top: 47px;
  height: 359px;
}
.section1 .box .list .item .foot .text {
  width: 40%;
  font-size: 14px;
  color: #373737;
  line-height: 32px;
}
.section2 {
  margin-top: 76px;
}
.section2 .title .img {
  display: block;
  width: 20.375rem;
}
.section2 .swiper-con {
  width: 100%;
  margin-top: 32px;
}
.section2 .swiper-con .swiper-container {
  position: relative;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .swiper-bg {
  width: 100%;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .swiper-bg img {
  display: block;
  width: 100%;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .box {
  padding: 3rem 1rem 1rem;
  position: absolute;
  top: 50%;
  left: 5%;
  transform: translateY(-50%);
  width: 40%;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .box .hb .img {
  display: block;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .box .eng {
  margin-top: 30px;
  font-size: 12px;
  font-family: FZLTHJW;
  color: #0062B1;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .box .chin {
  margin-top: 0.5rem;
  font-size: 19px;
  font-family: FZLTHJW;
  color: #21A3DA;
}
.section2 .swiper-con .swiper-container .swiper-wrapper .swiper-slide .box .intro {
  margin-top: 48px;
  font-size: 14px;
  color: #373737;
  line-height: 32px;
}
.section2 .left,
.section2 .right {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.section2 .left::after,
.section2 .right::after {
  content: '';
}
.section2 .left {
  left: -50px;
}
.section2 .right {
  right: -50px;
}
.section3 {
  margin-top: 113px;
  background: url(https://keshunfile.e-dou.com.cn/keshunWeb2024/keshunCN/PC/images/introduce/bg3-1.png?x-oss-process=image/resize,m_lfit,w_1200,image/format,webp) no-repeat center center;
  background-size: cover;
}
.section3 .box {
  display: flex;
  align-items: center;
}
.section3 .box .lb {
  padding: 1.875rem 0;
}
.section3 .box .lb .img {
  display: block;
  width: 28.0625rem;
  height: 21.625rem;
}
.section3 .box .rb {
  width: 40%;
  margin-left: 18rem;
}
.section3 .box .rb .text {
  color: #ffffff;
  font-size: 15px;
  letter-spacing: 2px;
}
.section3 .box .rb .text:nth-child(1) {
  font-size: 30px;
}
.section3 .box .rb .text:nth-child(2) {
  margin: 44px 0 98px;
}
.section3 .box .rb .button {
  cursor: pointer;
}
.section4 {
  margin-top: 86px;
}
.section4 .title .img {
  display: block;
  width: 22.1875rem;
}
.section4 .box {
  margin-top: 76px;
  padding: 34px 0 57px;
  background: #FFFFFF;
  box-shadow: 6px 8px 27px 0px rgba(208, 230, 255, 0.66), 0px 0px 51px 0px rgba(208, 230, 255, 0.66);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.section4 .box .item {
  padding: 0 6.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section4 .box .item .hb .img {
  display: block;
}
.section4 .box .item .fb {
  font-size: 20px;
  font-weight: bold;
  color: #727272;
}
.section4 .box .item:nth-child(1) .hb .img {
  width: 8.75rem;
}
.section4 .box .item:nth-child(1) .fb {
  margin-top: 23px;
}
.section4 .box .item:nth-child(2) {
  border-left: 2px solid #CDE9FF;
  border-right: 2px solid #CDE9FF;
}
.section4 .box .item:nth-child(2) .hb .img {
  width: 11.5625rem;
}
.section4 .box .item:nth-child(2) .fb {
  margin-top: 13px;
}
.section4 .box .item:nth-child(3) .hb .img {
  width: 8.9375rem;
}
.section4 .box .item:nth-child(3) .fb {
  margin-top: 31px;
}
.section5 .hb {
  margin-top: 92px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.section5 .hb .title {
  position: relative;
}
.section5 .hb .title .img {
  display: block;
  width: 18.8125rem;
}
.section5 .hb .title::after {
  content: '';
  width: 2.75rem;
  height: 0.375rem;
  background-color: #0064B4;
  display: block;
  position: absolute;
  left: 50%;
  bottom: -30px;
  transform: translateX(-50%);
}
.section5 .hb .text {
  margin-top: 79px;
  font-size: 14px;
  color: #373737;
  line-height: 36px;
}
.section5 .fb {
  margin-top: 49px;
  padding: 40px 0;
  background-color: #EFF8FF;
}
.section5 .fb .swiper-slide .img {
  display: block;
  width: 100%;
}
.masker {
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  overflow: hidden;
  z-index: 1031;
}
.masker .section {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1138px;
}
.masker .section .bb {
  position: relative;
}
.masker .section .bb .swiper-con {
  width: 100%;
}
.masker .section .bb .swiper-con .img-list {
  position: relative;
}
.masker .section .bb .swiper-con .img-list .swiper-wrapper .swiper-slide img {
  width: 100%;
}
.left,
.right {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.left {
  left: -100px;
}
.right {
  right: -100px;
}
#book {
  padding-bottom: 3rem;
  flex-direction: column;
}
.back {
  margin-bottom: 2rem;
}
#book .title {
  text-align: center;
  margin-bottom: 3rem;
}
.flip-book {
  box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.5);
  background-size: cover;
}
.page {
  background-color: #fdfaf7;
  color: #785e3a;
  border: solid 1px #c2b5a3;
  overflow: hidden;
}
.page .page-content {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
}
.page .page-content .page-header {
  height: 30px;
  font-size: 100%;
  text-transform: uppercase;
  text-align: center;
}
.page .page-content .page-image {
  height: 100%;
  background-size: contain;
  background-position: center center;
  background-repeat: no-repeat;
}
.page .page-content .page-text {
  height: 100%;
  flex-grow: 1;
  font-size: 80%;
  text-align: justify;
  margin-top: 10px;
  padding-top: 10px;
  box-sizing: border-box;
  border-top: solid 1px #f4e8d7;
}
.page .page-content .page-footer {
  height: 30px;
  border-top: solid 1px #f4e8d7;
  font-size: 80%;
  color: #998466;
}
.page.--left {
  border-right: 0;
  box-shadow: inset -7px 0 30px -7px rgba(0, 0, 0, 0.4);
}
.page.--right {
  border-left: 0;
  box-shadow: inset 7px 0 30px -7px rgba(0, 0, 0, 0.4);
}
.page.--right .page-footer {
  text-align: right;
}
.page img {
  display: block;
}
.filpbook-wrapper {
  width: 1100px;
}
@media (max-width: 1280px) {
  .section2 .left {
    right: 100px;
    left: auto;
    top: 3%;
    transform: translate(0, 0);
  }
  .section2 .right {
    top: 3%;
    right: 35px;
    transform: translate(0, 0);
  }
}