.about {
  padding: 75px 0 0;
}
.about h1 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
  text-align: center;
}
.about h1::after {
  content: "";
  background: var(--color-primary);
  width: 40px;
  height: 4px;
  margin: 11px auto 0;
  display: block;
}

.about .txt {
  margin: 50px 0 0;
  line-height: 24px;
  font-size: 16px;
  color: #3f5fa2;
}
.about .txt p ~ p {
  margin-top: 15px;
}
.about .v {
  width: 44.5%;
  position: relative;
  display: block;
  overflow: hidden;
  float: right;
  margin: 0 0 20px 30px;
}
.about .v img {
  width: 100%;
  display: block;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}
.about .v::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: url("../images/v1.png") no-repeat center;
  display: block;
}
.about .v:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
}

.about ul {
  margin-top: 88px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: space-between;
  justify-content: space-between;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.about ul li {
  text-align: center;
}
.about ul li h5 {
  color: var(--color-primary);
  font-size: 60px;
  line-height: 1;
  display: inline-block;
  position: relative;
}
.about ul li h5 span {
  font-family: var(--font-family1);
}
.about ul li h5::after {
  content: attr(date-txt);
  position: absolute;
  right: -15px;
  top: 2px;
  color: var(--color-primary);
  font-size: 24px;
}
.about ul li:nth-child(1) h5::after {
  right: -80px;
}
.about ul li:nth-child(2) h5::after {
  right: -42px;
}
.about ul li p {
  font-size: 24px;
  color: #3f5fa2;
  line-height: 24px;
  margin: 5px 0 0;
}

.vr {
  padding: 75px 0 0;
  text-align: center;
}
.vr h3 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
  text-align: center;
}
.vr h3::after {
  content: "";
  background: var(--color-primary);
  width: 40px;
  height: 4px;
  margin: 11px auto 0;
  display: block;
}
.vr .pic {
  margin: 50px 0 0;
  text-align: center;
}

.cert-list {
  padding: 75px 0;
}
.cert-list h3 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
  text-align: center;
}
.cert-list h3::after {
  content: "";
  background: var(--color-primary);
  width: 40px;
  height: 4px;
  margin: 11px auto 0;
  display: block;
}

.cert-list .list {
  margin-top: 50px;
  position: relative;
}
.cert-list .list a {
  height: 278px;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  align-items: center;
}
.cert-list .list .swiper-slide img {
  max-width: 100%;
  max-height: 100%;
}

.cert-list .swiper-button-prev,
.cert-list .swiper-button-next {
  width: 46px;
  height: 46px;
  background: none;
  color: #919191;
  margin-top: -23px;
  text-align: center;
}
.cert-list .swiper-button-prev::after,
.cert-list .swiper-button-next::after {
  display: none;
}
.cert-list .swiper-button-prev i,
.cert-list .swiper-button-next i {
  font-size: 40px;
  line-height: 46px;
  color: inherit;
}
.cert-list .swiper-button-prev,
.cert-list .swiper-container-rtl .swiper-button-next {
  left: -60px;
  right: auto;
}
.cert-list .swiper-button-next,
.cert-list .swiper-container-rtl .swiper-button-prev {
  right: -60px;
  left: auto;
}
.cert-list .swiper-button-prev:hover,
.cert-list .swiper-button-next:hover {
  color: var(--color-primary);
}

.cert-list .swiper-pagination {
  display: none;
  position: static;
  width: 100%;
  margin-top: 25px;
}
.cert-list .swiper-pagination-bullet {
  height: 12px;
  width: 12px;
  background: #e0e0e0;
  margin: 0 4px;
  border-radius: 50%;
  opacity: 1;
}
.cert-list .swiper-pagination-bullet-active {
  background: #999;
}

.pic-list {
  padding: 75px 0 0;
}
.pic-list h3 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
  text-align: center;
}
.pic-list h3::after {
  content: "";
  background: var(--color-primary);
  width: 40px;
  height: 4px;
  margin: 11px auto 0;
  display: block;
}

.pic-list .list {
  position: relative;
  margin: 50px 0 0;
}
.pic-list .list .swiper-slide a {
  display: block;
  width: 100%;
}
.pic-list .list .swiper-slide a img {
  width: 100%;
}

.pic-list .swiper-pagination {
  position: static;
  width: 100%;
  margin-top: 35px;
  font-size: 0;
}
.pic-list .swiper-pagination-bullet {
  width: 16px;
  height: 16px;
  margin: 0 10px;
  background: #e0e0e0;
  border-radius: 50%;
  opacity: 1;
}
.pic-list .swiper-pagination-bullet-active {
  background: #999;
}

.partner {
  padding: 0 0 75px;
}
.partner h3 {
  font-size: 50px;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-family1);
  text-align: center;
}
.partner h3::after {
  content: "";
  background: var(--color-primary);
  width: 40px;
  height: 4px;
  margin: 11px auto 0;
  display: block;
}

.partner ul {
  margin: 30px -20px 0;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}
.partner ul li {
  width: 20%;
  padding: 20px;
  box-sizing: border-box;
}
.partner ul li .pic {
  box-sizing: border-box;
  cursor: pointer;
}
.partner ul li .pic img {
  display: inline-block;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

@media screen and (max-width: 1441px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 48px;
  }

  .about ul li h5 {
    font-size: 50px;
  }
  .about ul li p {
    font-size: 22px;
  }
}

@media screen and (max-width: 1367px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 44px;
  }
  .about {
    padding: 60px 0 0;
  }

  .vr .pic iframe {
    height: 500px;
  }

  .cert-list {
    padding: 60px 0;
  }
  .cert-list .swiper-button-prev,
  .cert-list .swiper-button-next {
    width: 40px;
    height: 40px;
    margin-top: -20px;
  }
  .cert-list .swiper-button-prev i,
  .cert-list .swiper-button-next i {
    font-size: 30px;
    line-height: 40px;
  }
  .cert-list .swiper-button-prev,
  .cert-list .swiper-container-rtl .swiper-button-next {
    left: -50px;
  }
  .cert-list .swiper-button-next,
  .cert-list .swiper-container-rtl .swiper-button-prev {
    right: -50px;
  }

  .pic-list {
    padding: 60px 0 0;
  }

  .partner {
    padding: 0 0 60px;
  }
}

@media screen and (max-width: 1281px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 40px;
  }

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

@media screen and (max-width: 1171px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 36px;
  }
}

@media screen and (max-width: 992px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 32px;
  }
}

@media screen and (max-width: 768px) {
  .about ul li h5 {
    font-size: 44px;
  }
  .about ul li p {
    font-size: 18px;
  }

  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 28px;
  }

  .about {
    padding: 30px 0 0;
  }
  .about .txt {
    margin: 20px 0;
  }
  .about .txt p ~ p {
    margin-top: 10px;
  }
  .about .v {
    width: 100%;
    float: none;
    margin: 0 0 20px;
  }

  .about ul {
    margin-top: 25px;
  }
  .about ul li {
    width: 50%;
    padding: 15px 0;
  }
  .about ul li h5::after {
    font-size: 20px;
  }
  .about ul li:nth-child(1) h5::after {
    right: -75px;
  }
  .about ul li:nth-child(2) h5::after {
    right: -40px;
  }

  .vr {
    padding: 30px 0 0;
  }
  .vr .pic {
    margin: 25px 0 0;
  }
  .vr .pic iframe {
    height: 400px;
  }

  .cert-list {
    padding: 30px 0;
  }
  .cert-list .list {
    margin-top: 25px;
  }
  .cert-list .list a {
    height: 200px;
  }

  .pic-list {
    padding: 30px 0 0;
  }
  .pic-list .list {
    margin: 25px 0 0;
  }
  .pic-list .swiper-pagination {
    margin-top: 25px;
  }
  .pic-list .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    margin: 0 4px;
  }

  .partner {
    padding: 0 0 30px;
  }
  .partner ul {
    margin: 15px -10px 0;
  }
  .partner ul li {
    width: 33.33333%;
    padding: 10px;
  }
}

@media screen and (max-width: 600px) {
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 26px;
  }
}

@media screen and (max-width: 480px) {
  .about ul li h5 {
    font-size: 40px;
  }
  .about h1,
  .vr h3,
  .cert-list h3,
  .pic-list h3,
  .partner h3 {
    font-size: 24px;
  }

  .cert-list ul li {
    width: 50%;
  }
}