.about {
  margin-top: 38px;
}

.about .container {
  padding-top: 30px;
  padding-bottom: 30px;
}

.about .info-group {
  color: #fff;
  padding: 30px 15px;
  background: rgba(49, 56, 85, .5);
}

.about .title {
  color: #fff;
  margin: 0 0 20px;
}

.about .info {
  line-height: 1.9;
  max-height: 183px;
}

.about .btn {
  width: 137px;
  color: #333;
  margin-top: 13px;
  padding: 4px 15px;
  background: #fff;
  border-radius: 29px;
}

@media (min-width: 1200px) {
  .about .container {
    padding-top: 73px;
    padding-bottom: 73px;
  }

  .about .info-group {
    max-width: 590px;
    padding: 85px 36px 91px;
  }

  .about .title {
    margin-bottom: 52px;
  }

  .about .info {
    max-height: 274px;
  }
}


/* equipment */
.equipment {
  padding: 30px 0;
}

.equipment .swiper-slide {
  transition: transform .5s;
}

.equipment .swiper-slide:not(.swiper-slide-active) {
  transform: scale(.8);
}

.equipment .tit {
  text-align: center;
  font-weight: bold;
  margin-top: 13px;
  opacity: 1;
  transition: opacity .5s;
}

.equipment .swiper-slide:not(.swiper-slide-active) .tit {
  opacity: 0;
}

.equipment .swiper-button-prev,
.equipment .swiper-button-next {
  width: auto;
  height: auto;
  margin-top: 0;
  background: none;
  transform: translateY(-50%);
}

.equipment .swiper-button-prev {
  left: 0;
}

.equipment .swiper-button-next {
  right: 0;
}

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

.equipment .swiper-button-prev i,
.equipment .swiper-button-next i {
  font-size: 55px;
  color: #fff;
}

@media (min-width: 1200px) {
  .equipment {
    padding: 53px 0 42px;
  }

  .equipment .title {
    font-size: 30px;
    margin-bottom: 45px;
  }
}

@media (min-width: 1440px) {
  .equipment .tit {
    font-size: 28px;
  }
}


/* partners */
.partners {
  padding: 39px 0 30px;
  position: relative;
}

.partners::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(49, 56, 85, .6);
}

.partners .container {
  position: relative;
  z-index: 1;
}

.partners .title {
  color: #fff;
  font-size: 24px;
  margin: 0 0 20px;
}

@media (min-width: 1200px) {
  .partners {
    padding-bottom: 66px;
  }

  .partners .title {
    font-size: 30px;
    margin-bottom: 45px;
  }
}


/* milestone */
.milestone {
  padding-top: 30px;
  padding-bottom: 10px;
  position: relative;
}

.milestone .title {
  margin-bottom: 20px;
}

.milestone .swiper-thumbnail {
  position: relative;
  width: 100%;
}

.milestone .swiper-thumbnail::before {
  display: block;
  position: absolute;
  left: 0;
  top: calc(50% - 15px);
  transform: translateY(-50%);
  content: '';
  width: 100%;
  height: 2px;
  background: #000000;
  z-index: 1;
}

.milestone .swiper-thumbnail .swiper {
  margin-right: -16px;
  padding-right: 16px;
  padding-bottom: 30px;
}

.milestone .swiper-thumbnail .swiper-slide {
  position: relative;
  border-radius: 51px;
  overflow: hidden;
  background: var(--style-color);
  cursor: pointer;
}

.milestone .swiper-slide-thumb-active {
  box-shadow: 0px 10px 16px 1px rgba(0, 0, 0, 0.16);
}

.milestone .swiper-thumbnail img {
  opacity: 0;
}

.milestone .swiper-slide-thumb-active img {
  opacity: 1;
}

.milestone .tit {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  color: #fff;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 底部轮播 */
.milestone .swiper-gallery .swiper-slide {
  display: flex;
  align-items: center;
}

.milestone .lt .lt-title {
  font-weight: bold;
  color: var(--style-color);
  margin-bottom: 2px;
}

.milestone .lt .info {
  height: 65px;
  font-size: 18px;
  line-height: 1.8;
}

.milestone .rt {
  width: 100%;
  display: none;
}

.milestone .rt {
  position: relative;
  text-align: center;
}

.milestone .rt img:first-child {
  width: 99.8%;
  height: 99.8%;
  object-fit: cover;
}

.milestone .rt .zhezhao {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}

@media (min-width: 768px) {
  .milestone {
    padding-top: 45px;
  }

  .milestone .lt {
    flex: 0 0 38.5%;
    max-width: 38.5%;
  }

  .milestone .lt .info {
    height: 72px;
    font-size: 20px;
    max-width: 458px;
  }

  .milestone .rt {
    display: block;
    flex: 0 0 61.5%;
    max-width: 61.5%;
  }
}

@media (min-width: 1200px) {
  .milestone .title {
    margin-bottom: 51px;
  }

  .milestone .swiper-thumbnail {
    margin-bottom: 40px;
  }
}

@media (min-width: 1440px) {
  .milestone .swiper-thumbnail {
    margin-bottom: 65px;
  }
}

@media (min-width: 1640px) {
  .milestone .tit {
    font-size: 34px;
  }
}

@media (min-width: 1740px) {
  .milestone .swiper-thumbnail .container {
    max-width: 1720px;
  }
}