.about1 {
  padding: 80px 0;
}

.about1 .wp {
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-flex-direction: row-reverse;
  flex-direction: row-reverse;
}

.about1 .pic {
  width: 40%;
  display: block;
  overflow: hidden;
}

.about1 .pic img {
  display: block;
  width: 100%;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.about1 .txt {
  -webkit-flex: 1;
  flex: 1;
  margin: 0 0 0 75px;
  overflow: hidden;
}

.about1 .txt h1 {
  font-size: 34px;
  color: #000;
  line-height: 1;
  font-weight: 700;
}

.about1 .txt .t {
  margin-top: 30px;
  font-size: 18px;
}

.about1 .txt .t p{
  font-size: 18px;
  color: #333;
  line-height: 1.4;
}
.about1 .txt .t p~p {
  margin-top: 15px;
}

.about1 .txt .t strong {
  color: #333;
}

@keyframes scale2 {
  from {
    -webkit-transform: scale(1);
    transform: scale(1);
  }

  50% {
    -webkit-transform: scale(1.4);
    transform: scale(1.4);
  }

  to {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
}

.about2 {
  padding: 25px 0;
}

.about2 .box {
  display: -webkit-flex;
  display: flex;
}

.about2 .pic {
  width: 58%;
  display: block;
  overflow: hidden;
}

.about2 .v {
  width: 100%;
  position: relative;
  display: block;
}

.about2 .v>img {
  display: block;
  width: 100%;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.about2 .v:hover>img {
  transform: scale(1.01);
  -webkit-transform: scale(1.01);
}

.about2 .v .play {
  position: absolute;
  z-index: 10;
  left: calc(50% - 44px);
  top: calc(50% - 44px);
  width: 88px;
  height: 88px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  align-items: center;
  background: rgb(51 109 74 / 86%);
  border-radius: 50%;
}

.about2 .v .play::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  border-radius: 50%;
  background: rgb(51 109 74 / 17%);
  animation: scale2 2s linear infinite;
}

.about2 .v:hover::after {
  opacity: 1;
}

.about2 .pic p {
  font-size: 24px;
  color: #333;
  margin: 90px 0 0;
  text-align: center;
  font-weight: bold;
}

.about2 .pic p a {
  text-decoration: underline;
}

.about2 .txt {
  -webkit-flex: 1;
  flex: 1;
  padding: 60px 80px 0;
  text-align: center;
  overflow: hidden;
  box-sizing: border-box;
}

.about2 .txt h3 {
  font-size: 34px;
  color: #000;
  line-height: 1;
  font-weight: 700;
}

.about2 .txt p {
  margin-top: 20px;
  font-size: 20px;
  color: #333;
  line-height: 40px;
}

.about2 .txt .more {
  margin: 50px auto 0;
  color: #fff;
  font-size: 15px;
  width: 184px;
  height: 45px;
  line-height: 45px;
  border-radius: 25px;
  background: var(--btn-bg);
  display: inline-block;
  text-align: center;
}

.about2 .txt .more:hover {
  background: var(--btn-bg-hover);
}

.about2 .list {
  margin-top: -200px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: space-between;
  justify-content: space-between;
  -webkit-align-items: flex-end;
  align-items: flex-end;
}

.about2 .list .view {
  width: 460px;
  position: relative;
}

.about2 .list .view .arrow-left,
.about2 .list .view .arrow-right {
  background: rgba(0, 0, 0, 0.3);
  position: absolute;
  top: 50%;
  margin-top: -25px;
  width: 28px;
  height: 50px;
  z-index: 10;
  text-align: center;
}

.about2 .list .view .arrow-left {
  left: 0;
}

.about2 .list .view .arrow-right {
  right: 0;
}

.about2 .list .view .arrow-left i,
.about2 .list .view .arrow-right i {
  color: #fff;
  font-size: 15px;
  line-height: 50px;
}

.about2 .list .preview {
  width: 58%;
  overflow: hidden;
}

.about2 .list .preview .swiper-slide {
  cursor: pointer;
  display: inline-block;
  box-sizing: border-box;
  position: relative;
}

.about2 .list .preview .swiper-slide::after {
  display: none;
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
}

.about2 .list .preview .swiper-slide .pic {
  position: relative;
}

.about2 .list .preview .swiper-slide img {
  width: 100%;
}

.about2 .list .preview .swiper-slide.active-nav::after {
  display: block;
}

.about3 {
  padding: 70px 0 0;
  position: relative;
}

.about3::after {
  content: "";
  background: #F8F8F8;
  height: 195px;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}

.about3 .tit {
  text-align: center;
  position: relative;
  z-index: 10;
}

.about3 .tit h3 {
  font-size: 34px;
  color: #000;
  line-height: 1;
  font-weight: 700;
}

.about3 .tit p {
  font-size: 18px;
  color: #333;
  line-height: 2;
  max-width: 850px;
  margin: 30px auto 0;
}

.about3 .list {
  margin: 70px 0 0;
  box-shadow: 0 0 29px rgba(14, 4, 9, 0.09);
  padding: 70px;
  background: #fff;
  position: relative;
  z-index: 10;
}

.about3 ul {
  margin: 0 -35px;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}

.about3 ul li {
  width: 33.33333333%;
  padding: 0 35px;
  text-align: center;
  position: relative;
}

.about3 ul li:not(:nth-child(3n+1))::after {
  content: "";
  width: 1px;
  height: 100%;
  background: #ddd;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
}

.about3 ul li:nth-child(-n+3) .box {
  padding-bottom: 30px;
}

.about3 ul li:nth-child(n+4) .box {
  border-top: 1px solid #ddd;
  padding-top: 30px;
}

.about3 ul li h6 {
  font-size: 56px;
  color: #212121;
  line-height: 1;
  font-weight: 700;
}

.about3 ul li h6 em {
  font-weight: 700;
}

.about3 ul li p {
  font-size: 18px;
  color: #666;
  margin-top: 15px;
}

.about4 {
  padding: 120px 0;
  background: #F8F8F8;
}

.about4 ul li {
  display: -webkit-flex;
  display: flex;
}

.about4 ul li+li {
  margin-top: 70px;
}

.about4 ul li .pic {
  width: 41%;
  display: block;
  overflow: hidden;
}

.about4 ul li .pic img {
  display: block;
  width: 100%;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.about4 ul li .txt {
  -webkit-flex: 1;
  flex: 1;
  margin: 0 0 0 66px;
  overflow: hidden;
  box-sizing: border-box;
  border-bottom: 1px solid #D6D6D6;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-flex-direction: column;
  flex-direction: column;
}

.about4 ul li .txt h5 {
  font-size: 28px;
  color: #000;
  font-weight: bold;
  margin-bottom: 25px;
}

.about4 ul li .txt p {
  font-size: 18px;
  color: #333;
  line-height: 1.4;
}
.about4 ul li .txt p~p {
    margin: 12px 0 0;
}

.about4 ul li:nth-child(2n+1) {
  -webkit-flex-direction: row-reverse;
  flex-direction: row-reverse;
}

.about4 ul li:nth-child(2n+1) .txt {
  margin: 0 66px 0 0;
}

.about4 ul li .pic:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
}

@media screen and (max-width:1400px) {
  .about1 .txt h1,
  .about2 .txt h3,
  .about3 .tit h3{
    font-size: 32px;
  }

  .about1 .txt .t {
    margin-top: 40px;
    font-size: 17px;
    line-height: 1.8;
  }

  .about1 {
    padding: 70px 0;
  }

  .about2 {
    padding: 0;
  }

  .about3 ul li h6 {
    font-size: 50px;
  }

  .about3 ul li p {
    font-size: 17px;
  }

  .about4 {
    padding: 90px 0;
  }

  .about4 ul li .txt p {
    font-size: 17px;
    line-height: 1.6;
    margin: 20px 0 0;
  }
}

@media screen and (max-width:1280px) {
  .about2 .list {
    margin-top: -100px;
  }
  .about2 .txt{
    padding: 20px;
}
  .about2 .txt p{
    font-size: 16px;
    line-height: 1.4;
  }
  .about2 .list .view{
    width: 300px;
}
}

@media screen and (max-width:991px) {
  .about1 .txt h1,
  .about2 .txt h3,
  .about3 .tit h3 {
    font-size: 28px;
  }
  
  
  .cert-list .list {
    overflow: hidden;
}

  .about1 {
    padding: 30px 0;
  }

  .about1 .wp {
    -webkit-flex-direction: column;
    flex-direction: column;
  }

  .about1 .pic {
    width: 100%;
  }

  .about1 .txt {
    margin: 0 0 20px;
  }

  .about1 .txt h1 {
    text-align: center;
  }

  .about1 .txt .t {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.4;
  }

  .about1 .txt .t p~p {
    margin-top: 10px;
  }


  .about2 {
    padding: 0;
  }

  .about2 .box {
    -webkit-flex-direction: column;
    flex-direction: column;
  }

  .about2 .pic {
    width: 100%;
    display: block;
    overflow: hidden;
  }

  .about2 .txt {
    padding: 0 10px 20px;
  }

  .about2 .txt p {
    margin-top: 15px;
    font-size: 16px;
    line-height: 24px;
  }

  .about2 .txt .more {
    margin: 20px auto 0;
    font-size: 15px;
    width: 140px;
    height: 36px;
    line-height: 36px;
  }

  .about2 .list {
    width: 460px;
    margin: 20px auto 0;
    display: block;
  }

  .about2 .list .view {
    width: 100%;
    margin: 0 auto;
  }

  .about2 .list .preview {
    width: 100%;
    margin: 20px 0 0;
  }

  .about2 .v .play {
    left: calc(50% - 30px);
    top: calc(50% - 30px);
    width: 60px;
    height: 60px;
  }

  .about3 {
    padding: 30px 0 0;
  }

  .about3::after {
    display: none;
  }

  .about3 .tit p {
    font-size: 16px;
    line-height: 1.4;
    margin: 20px auto 0;
  }

  .about3 .list {
    margin: 30px 0 0;
    box-shadow: 0 0 10px rgba(14, 4, 9, 0.09);
    padding: 20px;
    background: #fff;
    position: relative;
    z-index: 10;
  }

  .about3 ul {
    margin: 0 -10px;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
  }

  .about3 ul li {
    width: 50%;
    padding: 10px 10px;
    text-align: center;
    position: relative;
  }

  .about3 ul li:not(:nth-child(3n+1))::after {
    display: none;
  }

  .about3 ul li:nth-child(-n+3) .box {
    padding-bottom: 10px;
  }

  .about3 ul li:nth-child(n+4) .box {
    border-top: none;
    padding-top: 10px;
  }

  .about3 ul li h6 {
    font-size: 30px;
  }

  .about3 ul li p {
    font-size: 16px;
    margin-top: 10px;
  }

  .about4 {
    padding: 30px 0;
  }

  .about4 ul li {
    -webkit-flex-direction: column;
    flex-direction: column;
  }

  .about4 ul li+li {
    margin-top: 20px;
  }

  .about4 ul li .pic {
    width: 100%;
    text-align: center;
  }

  .about4 ul li .txt {
    margin: 20px 0 0;
    border-bottom: none;
  }

  .about4 ul li .txt h5 {
    font-size: 22px;
    /* text-align: center; */
    margin: 0;
  }

  .about4 ul li .txt p {
    font-size: 16px;
    line-height: 1.4;
    margin: 15px 0 0;
  }

  .about4 ul li:nth-child(2n+1) {
    -webkit-flex-direction: column;
    flex-direction: column;
  }

  .about4 ul li:nth-child(2n+1) .txt {
    margin: 20px 0 0;
  }
}

@media screen and (max-width:600px) {
  .about1 .txt h1,
  .about2 .txt h3,
  .about3 .tit h3 {
    font-size: 25px;
  }

  .about2 .list {
    width: 100%;
  }
}

@media screen and (max-width:480px) {
  .about1 .txt h1,
  .about2 .txt h3,
  .about3 .tit h3 {
    font-size: 24px;
  }

  .about3 ul li {
    width: 100%;
  }
}




.cert-list {
  padding: 85px 0;
  background: #fff
}

.cert-list .index-tit h3 {
  margin: 0
}

.cert-list {
  padding: 85px 0;
  background: #fff
}

.cert-list .list {
  margin: 45px 0 0;
  position: relative
}

.cert-list .swiper {
  padding: 15px 0
}

.cert-list .swiper-slide {
  width: 378px;
  padding: 17px;
  background: #fff;
  box-sizing: border-box;
  box-shadow: 0 0 10px rgba(4, 0, 0, 0.24)
}

.cert-list .swiper-slide img {
  display: block
}

.cert-list .swiper-button-prev,
.cert-list .swiper-button-next {
  width: 48px;
  height: 48px;
  overflow: hidden;
  border-radius: 0;
  background: #73b166;
  margin-top: -24px;
  text-align: center;
  color: #fff
}

.cert-list .swiper-button-prev i,
.cert-list .swiper-button-next i {
  color: inherit;
  font-size: 24px;
  line-height: 48px
}

.cert-list .swiper-button-prev,
.cert-list .swiper-container-rtl .swiper-button-next {
  left: -97px;
  right: auto
}

.cert-list .swiper-button-next,
.cert-list .swiper-container-rtl .swiper-button-prev {
  right: -97px;
  left: auto
}

.cert-list .swiper-button-prev::after,
.cert-list .swiper-button-next::after {
  display: none;
}

.cert-list .swiper-button-prev:hover,
.cert-list .swiper-button-next:hover {
  background-color: #469935
}

.cert-list .swiper-pagination {
  position: static;
  width: 100%;
  margin-top: 30px;
  display: none
}

.cert-list .swiper-pagination-bullet {
  height: 10px;
  width: 10px;
  margin: 0 10px;
  background: #ccc;
  border-radius: 0;
  opacity: 1;
  box-sizing: border-box
}

.cert-list .swiper-pagination-bullet-active {
  background: #469935
}