.banner .banner-cate a:nth-of-type(1),
.banner .banner-cate a:nth-of-type(2),
.banner .banner-cate a:nth-of-type(3) {
  margin-right: 4px;
}

.banner .banner-cate {
  width: 74.4%;
  margin-left: 13.5%;
}

.text {
  width: 460px;
  padding: 32px 30px 20px 35px;
  left: auto;
  right: 25.5%;
}
.banner-insert {
  right: 25.5%;
  left: auto;
}
.pos-rel {
  position: relative;
}
.message-from-chairman,
.group-introduction {
  width: 66.56%;
  margin-left: 18.25%;
}
.message-from-chairman .chairman {
  width: 27.6%;
  float: left;
}
.message-from-chairman img {
  width: 100%;
}
.message-from-chairman .message-text {
  width: 72.4%;
  float: right;
  padding-left: 17.23%;
  background-color: #f9f9f9;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #000000;
  line-height: 24px;
  overflow: hidden;
}
.message-main {
  display: flex;
}
.message-from-chairman .message-text .signature {
  margin-left: 197px;
  margin-top: 32px;
}
.message-from-chairman .message-text .signature img {
  width: 42%;
}
.message-from-chairman .message-text p:first-of-type {
  margin-top: 92px;
}
h2 {
  padding-top: 100px;
  padding-bottom: 50px;
  font-size: 32px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #727272;
  line-height: 47px;
  text-align: center;
}
.introduction-main p {
  font-size: 16px;
  text-indent: 2em;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #727272;
  line-height: 32px;
}
.development-history {
  width: 85.24%;
  margin-left: 8.2%;
  overflow: hidden;
}
.development-history > p {
  margin: 0 18% 42px 19.78%;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #727272;
  line-height: 24px;
  text-align: center;
}
.development-main {
  position: relative;
  width: 100%;
  height: 210px;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
/* .development-main.start {
  background-image: url(../img/about/course.jpg);
}
.development-main.develop {
  background-image: url(../img/about/course02.jpg);
}
.development-main.future {
  background-image: url(../img/about/course01.jpg);
} */
.course-cate {
  width: 74.4%;
  margin-left: 13.5%;
}
.course-cate {
  position: absolute;
  top: 0;
  left: auto;
  width: 65.3%;
  margin-left: 17%;
  justify-content: space-between;
  z-index: 9;
}
.course-cate a:nth-of-type(1),
.course-cate a:nth-of-type(2) {
  margin-right: 4px;
}
.course-cate a {
  flex: 1;
  text-align: center;
  background-color: #b8b8b8;
  font-size: 16px;
  font-weight: 400;
  color: #ffffff;
  line-height: 36px;
  cursor: pointer;
}
.course-cate a.active {
  background-color: #00690e;
}
.development-main .history-insert-content {
  position: absolute;
  bottom: 42px;
  margin-left: 10%;
  font-size: 22px;
  font-weight: bold;
  color: #ffffff;
  line-height: 36px;
}
.development-main .history-insert-content .course-text {
  letter-spacing: 8px;
}
.history-insert-text {
  position: relative;
  padding-bottom: 25px;
  padding-left: 40px;
}
.history-insert-text::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  left: 0;
  top: 15px;
  border-left: 15px solid #fff;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
}
.development-main .history-insert-content {
  display: none;
}
.development-main.start .development-insert-start,
.development-main.develop .development-insert-develop,
.development-main.future .development-insert-future {
  display: block;
}
.history-insert {
  position: absolute;
  bottom: 42px;
  width: 320px;
  height: 120px;
  background: #e1261c;
  mix-blend-mode: multiply;
}
.development-main.start .development-insert-start .history-insert {
  position: absolute;
  bottom: 42px;
  width: 320px;
  height: 120px;
  background: #e1261c;
  mix-blend-mode: multiply;
}

@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  .development-main.start .development-insert-start .history-insert,
  .history-insert {
    background-color: rgba(160, 13, 6, 0.7) !important;
  }
}
.development-insert-develop .history-insert {
  width: 500px;
}
.development-insert-future .history-insert {
  width: 340px;
}
.history-main {
  position: relative;
  width: 100%;
  height: 431px;
  padding: 0 3.13% 0 3%;
  background: #f9f9f9;
}
.history-main.active {
  overflow: hidden;
}
.history-main ul li {
  position: relative;
  display: block;
  min-height: 122px;
  height: auto;
  padding-top: 21px;
}

.history-main ul#start li:first-of-type div {
  border: none;
}
.history-main ul li div {
  border: none;
}
#start li:first-of-type em::before {
  content: none;
}
.history-main ul li div,
.history-main ul li em {
  float: left;
}
.history-main ul li div.year {
  position: relative;
  display: block;
  font-size: 32px;
  height: 68px;
  line-height: 68px;
  color: #00690e;
  background-color: #f9f9f9;
  border: none;
  padding: 0 2%;
}
.history-main ul li div.year span {
  font-size: 24px;
}
.history-main ul li em::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  left: -5px;
  top: -18px;
  background-color: #8d8d8d;
}
.history-main ul li em::before {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  left: -3px;
  top: -15px;
  border-radius: 50%;
  z-index: 99;
  background-color: #00690e;
}
.history-main ul li > div {
  font-size: 18px;
  line-height: 24px;
  border: 1px solid #696969;
  background-color: #d9d9d9;
  /* border-radius: 15px; */
}
.history-main ul li div .course-item-icon {
  border: none;
  border-radius: 0;
}
.history-main ul li div .course-item-right {
  height: 68px;
}
.history-main ul li div .history-main ul li div.year span {
  font-size: 32px;
}

.history-main ul.start li div,
.history-main ul.develop li div,
.history-main ul.future li div {
  width: 47%;
}

.history-main ul.future li:last-of-type div {
  width: 47%;
  border-top-left-radius: 15px;
  border-bottom-left-radius: 15px;
}

.history-main ul.future li:last-of-type div .course-item-text {
  min-height: 100px;
  height: auto;
}
.history-main ul.future li:last-of-type .course-item-icon {
  /* height: 100%; */
  position: relative;
  top: 0;
  left: auto;
}
.history-main ul.start li div:first-of-type,
.history-main ul.develop li div:first-of-type,
.history-main ul.future li div:first-of-type {
  width: 47%;
  text-align: right;
  margin-right: 3%;
}

.history-main ul.start li div:last-of-type,
.history-main ul.develop li div:last-of-type,
.history-main ul.future li div:last-of-type {
  margin-left: 3%;
}
.history-main ul em {
  position: absolute;
  top: 72px;
  left: 50%;
  height: 80%;
  width: 2px;
  background: #00690e;
}
#start li:last-of-type em,
#develop li:last-of-type em,
#future li:last-of-type em {
  background: linear-gradient(to bottom, #00690e 0%, #f9f9f9 100%);
}

.course-main {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  padding: 0 10% 0 10%;
}

.history-main ul.start li div .course-item-right,
.history-main ul.develop li div .course-item-right,
.history-main ul.future li div .course-item-right,
.history-main ul.start li div .course-item-left,
.history-main ul.develop li div .course-item-left,
.history-main ul.future li div .course-item-left {
  width: calc(100% - 124px);
  margin: 0;
  min-height: 68px;
  height: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: none;
}
.history-main ul.start li div .course-item-icon,
.history-main ul.develop li div .course-item-icon,
.history-main ul.future li div .course-item-icon {
  float: left;
  width: 68px;
  margin: 0;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 72%;
}
#start li:first-of-type em::after {
  content: "";
  position: absolute;
  top: 0;
  left: -40px;
  width: 80px;
  height: 80px;
  background-color: #f2f2f2;
  border-radius: 50%;
  background-image: url(../img/icon/medicine.png);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 99;
}
#start li:first-of-type em {
  height: 170%;
  z-index: 999;
  top: -40px;
}
#start li:nth-of-type(2n) div,
#develop li:nth-of-type(2n) div,
#future li:nth-of-type(2n) div {
  border-color: #00690e;
}
#start li:nth-of-type(2n) > div,
#develop li:nth-of-type(2n-1) > div,
#future li:nth-of-type(2n-1) > div {
  height: 100%;
  border-top-right-radius: 15px;
  border-bottom-right-radius: 15px;
}
#start li:nth-of-type(2n-1) > div,
#develop li:nth-of-type(2n) > div,
#future li:nth-of-type(2n) > div {
  border-top-left-radius: 15px;
  border-bottom-left-radius: 15px;
}
#start li:last-of-type {
  height: 172px;
}
#start .course-item-right.course-item-icon {
  background-color: #565656;
}
#start .course-item-left.course-item-icon {
  background-color: #00690e;
  /* height: 100%; */
}
#develop .course-item-right.course-item-icon {
  background-color: #00690e;
}
#develop .course-item-left.course-item-icon {
  background-color: #565656;
}
#future .course-item-right.course-item-icon {
  background-color: #00690e;
}
#future .course-item-left.course-item-icon {
  background-color: #565656;
}
.course-item-right.course-item-icon {
  position: relative;
  margin-left: 56px !important;
}
.course-item-left.course-item-icon {
  margin-right: 42px !important;
  position: relative;
}
#development-history li > div {
  display: flex;
  /* align-items: center; */
}
#development-history li > div.year {
  display: block;
}
#start .course-item-right.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  right: -17px;
  top: 21px;
  border-left: 17px solid #565656;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
#start .course-item-left.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  left: -17px;
  top: 21px;
  border-right: 17px solid #00690e;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
#develop .course-item-right.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  right: -17px;
  top: 21px;
  border-left: 17px solid #00690e;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
#develop .course-item-left.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  left: -17px;
  top: 50%;
  margin-top: -14px;
  border-right: 17px solid #565656;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
#future .course-item-right.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  right: -17px;
  top: 50%;
  margin-top: -14px;
  border-left: 17px solid #00690e;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
#future .course-item-left.course-item-icon::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  left: -16px;
  top: 50%;
  margin-top: -14px;
  border-right: 17px solid #565656;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
}
li p {
  position: relative;
}
#start li:nth-of-type(2) p::before {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  top: 50%;
  margin-top: -2.5px;
  left: -20px;
  border-radius: 50%;
  background-color: #272727;
}
#develop li:nth-of-type(3) p::before,
#develop li:nth-of-type(5) p::before {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  top: 50%;
  margin-top: -2.5px;
  left: -20px;
  border-radius: 50%;
  background-color: #272727;
}
#future li:nth-of-type(1) p::before,
#future li:nth-of-type(5) p::before {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  top: 50%;
  margin-top: -2.5px;
  left: -20px;
  border-radius: 50%;
  background-color: #272727;
}
#future li:nth-of-type(5) p::before {
  top: 9px;
}
#future li:last-of-type > div {
  height: 100%;
  margin-top: -15px;
}
#future li:last-of-type div.year {
  margin-top: 0 !important;
}

#enterprise-honor {
  width: 85.24%;
  margin: 0 auto;
}
#enterprise-honor .honor-item {
  width: 50%;
  float: left;
  margin-bottom: 135px;
}
#enterprise-honor .honor-item .honor-item-title {
  font-size: 24px;
  font-weight: bold;
  color: #8d8d8d;
  line-height: 36px;
}
#enterprise-honor .honor-item ul {
  position: relative;
  height: 112px;
  border-left: 1px solid #848484;
  padding-left: 5.8%;
}
#enterprise-honor .honor-item ul li {
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #727272;
  line-height: 24px;
}
#enterprise-honor .honor-item .honor-item-title {
  padding-bottom: 16px;
}
#enterprise-honor .honor-item:nth-of-type(5) ul li:nth-of-type(4) {
  text-indent: 9em;
}
#enterprise-honor .honor-item ul::after {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  left: -1px;
  bottom: 66px;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 17px solid #fff;
  z-index: 1;
}
#enterprise-honor .honor-item ul::before {
  position: absolute;
  content: "";
  width: 0;
  height: 0;
  bottom: 62px;
  left: -1px;
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  border-left: 22px solid #008945;
}

.breadcrumb-nav {
  display: none;
  padding: 12px 10px;
  align-items: center;
}
.breadcrumb-nav .breadcrumb-nav-item {
  display: inline-block;
  font-size: 12px;
  font-family: SourceHanSansCN;
  font-weight: 400;
  color: #8f8f8f;
  line-height: 22px;
}
.breadcrumb-nav .breadcrumb-nav-item a {
  color: #8f8f8f;
}
.breadcrumb-nav .breadcrumb-nav-item:last-child a {
  color: #484848;
  font-weight: bold;
  cursor: auto;
}

#start li:nth-of-type(3) p,
#develop li:nth-of-type(2n) p,
#future li:nth-of-type(2n) p {
  margin-right: -30px;
}

@media screen and (max-width: 1680px) {
  .history-main ul.start li div,
  .history-main ul.develop li div,
  .history-main ul.future li div {
    width: 45%;
  }
}
@media screen and (max-width: 1440px) {
  h2 {
    padding-top: 132px;
    padding-bottom: 24px;
  }
  .message-from-chairman .message-text p:first-of-type {
    margin-top: 48px;
  }
  .message-from-chairman .message-text {
    width: 72.4%;
    float: right;
    padding-left: 10%;
    background-color: #f9f9f9;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #000000;
    overflow: hidden;
  }
  .message-from-chairman .message-text .signature img {
    width: 60%;
  }
  .introduction-main p {
    text-indent: 2em;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #727272;
  }
  .development-history > p {
    margin: 0 18% 42px 19.78%;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #727272;
    text-align: center;
  }
  #enterprise-honor .honor-item .honor-item-title {
    font-weight: 400;
    color: #8d8d8d;
    line-height: 36px;
  }
  #enterprise-honor .honor-item ul li {
    font-size: 16px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #727272;
    line-height: 24px;
  }
  #enterprise-honor .honor-item ul {
    position: relative;
    height: 102px;
    border-left: 1px solid #848484;
    padding-left: 6.2%;
  }
  #enterprise-honor .honor-item ul::before {
    position: absolute;
    content: "";
    width: 0;
    height: 0;
    bottom: 62px;
    left: -1px;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 16px solid #008945;
  }
  #enterprise-honor {
    width: 92%;
    margin: 0 auto;
  }
  #enterprise-honor .honor-item ul::after {
    position: absolute;
    content: "";
    width: 0;
    height: 0;
    left: -1px;
    bottom: 66px;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 10px solid #fff;
    z-index: 1;
  }
  .history-main ul li div.year {
    font-size: 24px;
  }
  .history-main ul li > div {
    font-size: 16px;
  }
}
@media screen and (max-width: 992px) {
  h2 {
    padding-top: 32px;
    padding-bottom: 18px;
    /* font-size: 24px; */
  }
  .message-from-chairman .message-text {
    font-size: 16px;
  }
  #enterprise-honor .honor-item ul li {
    font-size: 14px;
    line-height: 24px;
  }
  #enterprise-honor .honor-item ul {
    height: 120px;
  }
}
@media screen and (min-width: 768px) {
  .load-more-box {
    display: none;
  }
}
@media screen and (max-width: 768px) {
  .banner .banner-cate {
    width: 100%;
    margin: 0;
  }
  .breadcrumb-nav {
    display: block;
  }
  .text {
    top: auto;
    bottom: 25px;
    width: 215px;
  }
  .banner-insert {
    top: auto;
    bottom: 25px;
  }
  .message-from-chairman,
  .group-introduction {
    width: 84%;
    margin: 0 auto;
  }
  h2 {
    font-size: 20px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #727272;
    line-height: 24px;
    padding: 38px 0 24px 0;
  }
  .message-from-chairman .chairman {
    width: 48.57%;
    margin: 0 auto;
    float: none;
  }
  .message-from-chairman .message-text {
    width: 100%;
    height: auto !important;
    margin: 0 auto;
    float: none;
    padding-left: 0;
    background: #fff;
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #000000;
    line-height: 20px;
  }
  .message-from-chairman .message-text p {
    width: 62%;
    margin: 0 auto;
  }
  .message-from-chairman .message-text p:first-of-type {
    margin-top: 28px;
  }
  .introduction-main p {
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #727272;
    line-height: 24px;
  }
  .development-history > p {
    width: 84%;
    margin: 0 auto 24px;
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #727272;
    line-height: 24px;
  }
  .honor-main {
    /* height: 375px; */
    /* height: 0; */
    /* padding-top: 375px; */
    display: flex;
    flex-direction: column;
  }
  #enterprise-honor {
    width: 84%;
    overflow: hidden;
    margin: 0 auto 50px auto;
  }
  #enterprise-honor .honor-item {
    position: relative;
    width: 100%;
    float: none;
    margin-bottom: 26px;
  }
  #enterprise-honor .honor-item::after {
    content: "";
    position: absolute;
    width: 1px;
    height: 82px;
    background-color: #848484;
    top: 28px;
  }
  #enterprise-honor .honor-item .honor-item-title {
    padding-bottom: 10px;
    font-size: 15px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    color: #8d8d8d;
    line-height: 17px;
  }
  #enterprise-honor .honor-item ul li {
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #727272;
    line-height: 20px;
  }
  #enterprise-honor .honor-item ul {
    position: relative;
    height: auto;
    border: none;
  }
  /* #enterprise-honor .honor-item ul::after {
    position: absolute;
    content: "";
    top: 0px;
    width: 1px;
    height: 78px;
    background-color: #848484;
  } */
  #enterprise-honor .honor-item ul::before {
    top: 24px;
    left: -1px;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 12px solid #008945;
  }
  #enterprise-honor .honor-item ul::after {
    top: 26px;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 8px solid #fff;
    z-index: 1;
  }
  /* #enterprise-honor .honor-item ul li:last-of-type {
    padding-bottom: 26px;
  } */
  #enterprise-honor .honor-item:nth-of-type(5) ul li:nth-of-type(4) {
    text-indent: 0em;
  }
  .mob-honor-hide {
    display: none;
  }
  .mob-honor-hide.active {
    display: flex;
    flex-direction: column;
  }
  .load-more-box {
    width: 100%;
    margin: 0 auto;
    text-align: center;
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #8d8d8d;
    line-height: 16px;
    cursor: pointer;
  }
  .development-history {
    width: 100%;
    margin-left: 0;
  }
  .course-cate {
    width: 100%;
    margin-left: 0;
  }
  .course-cate a {
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #ffffff;
  }
  #start li:first-of-type em::after {
    width: 50px;
    height: 50px;
    left: -25px;
    top: -25px;
  }
  .history-main {
    padding: 0;
    background-color: #fff;
  }

  .course-main {
    width: 84%;
    left: 8%;
    margin: 0 auto;
    padding: 0;
  }
  #start .course-item-left.course-item-icon,
  #start .course-item-right.course-item-icon,
  #develop .course-item-left.course-item-icon,
  #develop .course-item-right.course-item-icon,
  #future .course-item-left.course-item-icon,
  #future .course-item-right.course-item-icon {
    position: absolute;
    width: 45px;
    height: 40px;
    top: -25px;
    background-size: 60%;
  }
  .history-main ul.start li div .course-item-right,
  .history-main ul.develop li div .course-item-right,
  .history-main ul.future li div .course-item-right,
  .history-main ul.start li div .course-item-left,
  .history-main ul.develop li div .course-item-left,
  .history-main ul.future li div .course-item-left {
    min-height: auto;
  }
  #start .course-item-left.course-item-icon {
    height: 40px;
  }
  #start .course-item-right.course-item-icon,
  #develop .course-item-right.course-item-icon,
  #future .course-item-right.course-item-icon {
    right: 54%;
  }
  .history-main ul li div {
    font-size: 12px;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #00690e;
    line-height: 20px;
  }

  .history-main ul.start li div .course-item-right,
  .history-main ul.develop li div .course-item-right,
  .history-main ul.future li div .course-item-right,
  .history-main ul.start li div .course-item-left,
  .history-main ul.develop li div .course-item-left,
  .history-main ul.future li div .course-item-left {
    width: 100%;
    height: auto;
    /* padding-top: 12px;
    padding-bottom: 36px; */
  }
  .history-main ul li div.year,
  .history-main ul li div.year span {
    font-size: 12px;
  }
  .history-main ul li div {
    background-color: #fff;
    border: none;
  }
  .history-main ul li div.year {
    background-color: #fff;
  }
  li p::before,
  li p::after {
    content: none !important;
  }
  .course-item-right.course-item-text {
    padding-left: 12px;
  }
  .course-item-left.course-item-text {
    padding-right: 12px;
  }
  .history-main {
    height: 246px;
  }
  #start .course-item-left.course-item-icon::after {
    left: 12px;
    top: auto;
    bottom: -23px;
    border-top: 8px solid #00690e;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
  }
  #start .course-item-right.course-item-icon::after {
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    right: 12px;
    top: 40px;
    border-top: 8px solid #565656;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
  }
  #develop .course-item-left.course-item-icon::after,
  #future .course-item-left.course-item-icon::after {
    left: 12px;
    top: auto;
    bottom: -23px;
    border-top: 8px solid #565656;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
  }
  #develop .course-item-right.course-item-icon::after,
  #future .course-item-right.course-item-icon::after {
    right: 12px;
    top: 40px;
    border-top: 8px solid #00690e;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
  }

  .introduction-main .course-text {
    font-size: 15px;
    font-family: SourceHanSansCN;
    font-weight: 800;
    color: #ffffff;
    line-height: 18px;
  }

  .history-main ul em {
    height: 100%;
    top: 22px;
  }
  .history-main ul li {
    height: auto;
    min-height: 84px;
    /* padding-top: 0; */
  }
  .history-main ul li em::before {
    top: 3px;
  }
  #start li:nth-of-type(3) p,
  #develop li:nth-of-type(2n) p,
  #future li:nth-of-type(2n) p {
    margin-right: 0px;
  }
  .history-main ul.start li div,
  .history-main ul.develop li div,
  .history-main ul.future li div {
    width: 47%;
  }
  .history-main ul li em::after {
    top: 0;
  }
  .history-main ul li div.year {
    height: auto;
    line-height: 1.1em;
  }
  .development-main .course-text {
    font-size: 15px;
    font-family: SourceHanSansCN;
    font-weight: 800;
    color: #ffffff;
    line-height: 18px;
    letter-spacing: 0px !important;
  }
  .development-main .history-insert-content {
    margin-left: 5%;
  }
  .development-main {
    height: 150px;
  }
  #start li:first-of-type {
    height: 72px;
  }
  #start li:first-of-type em {
    top: 0;
    height: 128%;
  }
  #start li:last-of-type {
    height: 128px;
  }
  #start li:last-of-type em {
    background: linear-gradient(
      to bottom,
      #00690e 0%,
      #f9f9f9 60%,
      #00690e 100%
    );
  }
  .active #start li:last-of-type em {
    background: linear-gradient(to bottom, #00690e 0%, #00690e 100%);
  }
  #develop li:last-of-type {
    padding-bottom: 28px;
  }
  .history-main ul.future li:last-of-type .course-item-icon {
    left: auto;
    top: -48px !important;
  }
  .history-main ul.future li:last-of-type div {
    border-radius: 0;
  }

  .history-insert {
    display: none !important;
  }
  .history-insert-text {
    display: none !important;
  }
  .history-insert {
    bottom: 5px;
    /* width: 320px; */
    height: 62px;
  }
  .message-from-chairman .message-text .signature {
    margin: 0;
    padding-left: 45%;
  }
  .message-from-chairman .message-text .signature img {
    width: 83%;
  }
  .message-main {
    flex-direction: column;
  }
}
@media screen and (max-width: 375px) {
  .message-from-chairman .message-text p {
    width: 72%;
  }
}