.about-media-inner {
  height: 0;
  padding-top: 38%;
  width: 100%;
  overflow: hidden;
  border-radius: 12px;
}

.about-media-inner video,
.about-media-inner .bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  border-radius: 12px;
}

/* advantages */
.adv-section .btitle,
.history-section .btitle {
  margin-bottom: 32px;
}
.adv-row {
  border-bottom: 2px dotted var(--accent-color);
}
.adv-row .col {
  flex: 1;
  padding-left: 16px;
  padding-right: 16px;
  padding-bottom: 42px;
  position: relative;
}

.adv-row .col:before,
.history-list .item:before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 22px;
  background: var(--accent-color);
  border-radius: 50%;
  border: 6px solid #fff;
  box-shadow: 0px 0px 0px 1px var(--accent-color);
  position: absolute;
  left: 50%;
  margin-left: -12px;
  bottom: -12px;
  z-index: 2;
}
.adv-row .col:first-child:after,
.adv-row .col:last-child:after {
  content: "";
  width: 50%;
  height: 2px;
  background: #fff;
  position: absolute;
  bottom: -2px;
  left: 0;
}
.adv-row .col:last-child:after {
  left: inherit;
  right: 0;
}
.adv-row .item,
.history-list .item {
  position: relative;
  padding-top: 18px;
  text-align: center;
}

.adv-row .item .number,
.history-list .item .year {
  font-weight: 600;
  font-family: "Montserrat", sans-serif;
  color: #ebebeb;
  font-size: 118px;
  line-height: 48px;
  line-height: 0.9;
}

.adv-row .item .title,
.history-list .item .title {
  font-family: "Montserrat", sans-serif;
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 24px;
  margin-top: -30px;
}

/* history */
.history-list {
  max-width: 845px;
  margin: 0 auto;
  position: relative;
}

.history-list:before {
  content: "";
  display: block;
  width: 0px;
  height: calc(100% - 96px);
  position: absolute;
  top: 65px;
  right: 50%;
  margin-right: -2px;
  border-left: 2px dotted var(--accent-color);
}

.history-list .item {
  width: 50%;
  margin-bottom: 32px;
}

.history-list .item.item-left {
  padding-right: 48px;
  float: left;
}
.history-list .item.item-right {
  padding-left: 48px;
  float: right;
}

.history-list .item:nth-of-type(2) {
  margin-top: 110px;
}

.history-list .item .text {
  min-height: 76px;
}

.history-list .item:before {
  left: inherit;
  bottom: inherit;
  top: 65px;
  right: -11px;
  margin: 0;
}
.history-list .item.item-right:before {
  right: inherit;
  left: -10px;
}

.history-list .item:last-child {
  margin-bottom: 0;
}

/* team */
.team-grid {
  margin-bottom: -32px;
}
.team-grid > .col-15,
.cert-grid > .col-15 {
  margin-bottom: 32px;
}
.team-grid .item,
.cert-grid .item {
  height: 100%;
  background: #ebebeb;
  border-radius: 9px;
  overflow: hidden;
}
.team-grid .item-img,
.cert-grid .item-img {
  position: relative;
  width: 100%;
  height: 0;
  padding-top: 120%;
}
.team-grid .item-img img,
.cert-grid .item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  left: 0;
  top: 0;
}

.team-grid .item .item-content,
.cert-grid .item .item-content {
  padding: 12px 18px;
}

.team-grid .item .item-content .title,
.cert-grid .item .item-content .title {
  font-weight: bold;
  margin-bottom: 6px;
}
.team-grid .item .item-content .position,
.cert-grid .item .item-content .item-url,
.cert-grid .item .item-content .item-date {
  font-size: 14px;
}
.cert-grid .item .item-url {
  color: var(--main-color);
}
.cert-grid .item .item-date {
  color: var(--gray-color);
  margin-top: 4px;
}

.cert-grid .item-img {
  padding-top: 78%;
}

@media screen and (max-width: 1199px) {
  .team-grid > .col-15,
  .cert-grid > .col-15 {
    -ms-flex: 0 0 33.333%;
    flex: 0 0 33.333%;
    max-width: 33.333%;
  }
}

@media screen and (max-width: 991px) {
  .adv-row {
    border: none;
    margin-bottom: -32px;
  }
  .adv-row .col {
    -webkit-box-flex: 0;
    -ms-flex: 0 0 50%;
    flex: 0 0 50%;
    max-width: 50%;
    padding-bottom: 32px;
  }
  .adv-row .col:first-child:after,
  .adv-row .col:last-child:after,
  .adv-row .col:before {
    display: none;
  }
}

@media screen and (max-width: 767px) {
  .adv-row .item .number,
  .history-list .item .year {
    font-size: 96px;
    line-height: 35px;
  }
  .adv-row .item,
  .history-list .item {
    padding-top: 18px;
  }

  .adv-row .item .title,
  .history-list .item .title {
    margin-bottom: 16px;
  }

  .history-list {
    max-width: 100%;
    padding-right: 16px;
  }

  .history-list:before {
    right: 17px;
    top: 32px;
    height: calc(100% - 48px);
  }

  .history-list .item {
    width: 100%;
    float: none;
    padding-left: 0px !important;
    padding-right: 32px !important;
  }

  .history-list .item:nth-of-type(2) {
    margin-top: 0px;
  }

  .history-list .item:before {
    top: 32px;
  }

  .history-list .item.item-right:before {
    left: inherit;
    right: -11px;
  }

  .history-list .item .year {
    font-size: 67px;
    line-height: 13px;
  }

  .history-list .item .text {
    min-height: unset;
  }

  .team-grid > .col-15,
  .cert-grid > .col-15 {
    -ms-flex: 0 0 50%;
    flex: 0 0 50%;
    max-width: 50%;
  }
}

@media screen and (max-width: 575px) {
  .team-grid,
  .cert-grid {
    margin-left: -8px;
    margin-right: -8px;
  }

  .team-grid > .col-15,
  .cert-grid > .col-15 {
    padding-left: 8px;
    padding-right: 8px;
    margin-bottom: 16px;
  }

  .adv-section .item .text,
  .history-list .item .text {
    font-size: 14px;
  }
}