.about {
  padding: 30px 0;
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, .5);
}

.about .container {
  position: relative;
  z-index: 1;
  color: #fff;
}

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

.about .info {
  line-height: 1.8;
  max-height: 202px;
}

@media (min-width: 1200px) {
  .about {
    padding-top: 59px;
    padding-bottom: 62px;
  }

  .about .title {
    margin-bottom: 40px;
  }
}

@media (min-width: 1640px) {
  .about .title {
    margin-bottom: 52px;
  }
}


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

.advantage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, .5);
}

.advantage .container {
  position: relative;
  z-index: 1;
  color: #fff;
}

.advantage .item-list {
  margin-bottom: -30px;
}

.advantage .item-list li {
  text-align: center;
  margin-bottom: 30px;
}

.advantage .icon-wrap {
  width: 140px;
  height: 140px;
  margin: 0 auto;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 3px 3px 6px 1px rgba(104, 46, 21, 0.16), inset 6px 6px 8px 1px rgba(104, 46, 21, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
}

.advantage .icon-wrap:hover {
  background: var(--style-color);
  box-shadow: 3px 3px 6px 1px rgba(255, 255, 255, 0.16), inset 6px 6px 8px 1px rgba(255, 255, 255, 0.45);
}

.advantage .icon {
  height: 69px;
  overflow: hidden;
}

.advantage .icon-wrap:hover img {
  position: relative;
  top: -69px;
  filter: drop-shadow(0 69px 0 #fff);
}

.advantage .tit {
  margin-top: 10px;
  margin-bottom: 10px;
  line-height: 1;
  font-family: 'NTSomic-B';
}

.advantage .info {
  line-height: 1.8;
}

@media (min-width: 540px) {
  .advantage .item-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .advantage .item-list li {
    flex: 0 0 45%;
  }
}

@media (min-width: 1200px) {
  .advantage {
    padding-top: 57px;
    padding-bottom: 52px;
  }

  .advantage .item-list li {
    flex: 0 0 24%;
  }

  .advantage .icon-wrap {
    width: 160px;
    height: 160px;
  }

  .advantage .icon {
    height: 75px;
  }

  .advantage .icon-wrap:hover img {
    position: relative;
    top: -89px;
    filter: drop-shadow(0 89px 0 #fff);
  }

  .advantage .tit {
    margin-top: 22px;
    margin-bottom: 32px;
  }
}

@media (min-width: 1440px) {
  .advantage .item-list li {
    flex: 0 0 300px;
    max-width: 300px;
  }

  .advantage .tit {
    font-size: 50px;
  }
}

@media (min-width: 1640px) {
  .advantage .icon-wrap {
    width: 214px;
    height: 214px;
  }

  .advantage .icon {
    height: 89px;
  }

  .advantage .tit {
    font-size: 64px;
  }
}


/* certificate */
.certificate {
  padding: 30px 0;
  background: #373535;
}

.certificate .title {
  color: #fff;
  margin-bottom: 20px;
}

.certificate .swiper-pagination-bullet:not(.swiper-pagination-bullet-active) {
  background: #fff;
}

@media (min-width: 768px) {
  .certificate .swiper-wrap {
    position: relative;
    padding: 0 55px;
  }

  .certificate .prev-btn, .certificate .next-btn {
    width: 45px;
    height: 45px;
    font-size: 24px;
    font-weight: bold;
    border-radius: 50%;
    color: var(--style-color);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .3s;
  }

  .certificate .prev-btn:hover, .certificate .next-btn:hover {
    color: #fff;
    background: var(--style-color);
  }
}

@media (min-width: 1200px) {
  .certificate {
    padding: 64px 0 60px;
  }

  .certificate .title {
    margin-bottom: 40px;
  }

  .certificate .swiper-wrap {
    padding: 0 65px;
  }

  .certificate .prev-btn, .certificate .next-btn {
    width: 50px;
    height: 50px;
    font-size: 30px;
  }
}

@media (min-width: 1640px) {
  .certificate {
    padding-bottom: 93px;
  }

  .certificate .title {
    margin-bottom: 55px;
  }
}

@media (min-width: 1840px) {
  .certificate .swiper-wrap {
    padding: 0;
  }

  .certificate .prev-btn, .certificate .next-btn {
    width: 60px;
    height: 60px;
    font-size: 34px;
  }

  .certificate .prev-btn {
    left: -25px;
    transform: translate(-100%, -50%);
  }

  .certificate .next-btn {
    right: -25px;
    transform: translate(100%, -50%);
  }
}


/* milestone */
@font-face {
  font-family: 'Besley-B';
  src: url('../public/Themes/fonts/Besley-Bold.ttf');
}

@font-face {
  font-family: 'Besley-S';
  src: url('../public/Themes/fonts/Besley-SemiBold.ttf');
}

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

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

.milestone .swiper-gallery .swiper-slide {
  display: flex;
  align-items: center;
}

.milestone .lt-title {
  font-family: 'Besley-B';
  margin-bottom: 15px;
}

.milestone .info {
  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;
}

/* 底部轮播 */
.milestone .swiper-thumbs {
  position: relative;
  width: 100%;
}

.milestone .swiper-thumbs::before {
  display: block;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  content: '';
  width: 100%;
  height: 2px;
  background: #707070;
  z-index: 1;
}

.milestone .swiper-thumbs .swiper-container {
  margin: -7px -16px -19px -10px;
  padding: 7px 16px 19px 10px;
}

.milestone .swiper-thumbs .swiper-slide {
  position: relative;
  border-radius: 50%;
  aspect-ratio: 1 / 1;
  box-shadow: 3px 6px 12px 1px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.milestone .tit {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #fff;
  font-family: 'Besley-S';
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.milestone .swiper-slide-thumb-active .tit {
  color: #fff;
  background: rgba(241, 88, 19, .5);
}

@media (min-width: 720px) {
  .milestone .swiper-gallery .container {
    padding: 0;
    max-width: 100%;
  }
}

@media (min-width: 768px) {
  .milestone {
    padding-top: 0;
  }

  .milestone .lt {
    flex: 0 0 47%;
    max-width: 47%;
  }

  .milestone .info {
    max-width: 545px;
  }

  .milestone .rt {
    display: block;
    flex: 0 0 53%;
    max-width: 53%;
  }
}

@media (min-width: 1200px) {
  .milestone {
    padding-bottom: 60px;
  }

  .milestone .title {
    position: absolute;
    top: 60px;
    left: calc((100vw - 5px - 1600px) / 2 + 15px);
  }

  .milestone .lt-title {
    margin-bottom: 22px;
  }

  .milestone .swiper-thumbs {
    margin-top: -25px;
  }
}

@media (min-width: 1440px) {
  .milestone .lt-title {
    font-size: 55px;
  }
}

@media (min-width: 1640px) {
  .milestone {
    padding-bottom: 84px;
  }

  .milestone .title {
    top: 71px;
  }

  .milestone .lt {
    padding-left: calc((100vw - 5px - 1600px) / 2 + 15px);
  }

  .milestone .lt-title {
    font-size: 70px;
  }

  .milestone .tit {
    font-size: 60px;
  }
}