.about-container {
  margin-top: 60px;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: justify;
          justify-content: space-between;
}

.about-menu {
  width: 300px;
}

.about-menu a {
  width: 100%;
  height: 92px;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  gap: 20px;
  font-size: 20px;
  line-height: 26px;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  box-sizing: border-box;
  padding: 20px;
}

.about-menu a ~ a {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.about-menu a:hover, .about-menu a.active {
  color: #fff;
  background-color: #3A4B99;
}

.about-main {
  width: 880px;
}

.about-title {
  font-size: 36px;
  line-height: 50px;
  font-weight: 600;
  color: #3A4B99;
  padding-bottom: 20px;
}

.about-main-black ~ .about-main-black {
  margin-top: 60px;
}

.about-environment .mySwiper {
  margin-top: 10px;
}

.about-environment .mySwiper .swiper-slide {
  border: 1px solid transparent;
  cursor: pointer;
}

.about-environment .mySwiper .swiper-slide.swiper-slide-thumb-active {
  border-color: #3A4B99;
}

.about-environment .mySwiper2 {
  position: relative;
}

.about-environment .swiper-button-prev,
.about-environment .swiper-button-next {
  width: 30px;
  height: 80px;
  background-color: #000000;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 6px;
  -webkit-transform: translate(0, -50%);
          transform: translate(0, -50%);
  margin: 0;
}

.about-environment .swiper-button-prev::after,
.about-environment .swiper-button-next::after {
  content: "";
  display: none;
}

.about-environment .swiper-button-prev::before,
.about-environment .swiper-button-next::before {
  content: "";
  width: 7px;
  height: 14px;
  background: url(../image/banner-arrow.svg) no-repeat center;
  background-size: contain;
}

.about-environment .swiper-button-prev {
  left: 30px;
}

.about-environment .swiper-button-next {
  right: 30px;
}

.about-environment .swiper-button-next::before {
  -webkit-transform: rotate(180deg);
          transform: rotate(180deg);
}

.device-list {
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: justify;
          justify-content: space-between;
  flex-wrap: wrap;
}

.device-list .item {
  width: 275px;
  margin-bottom: 27px;
}

.device-list .item .img {
  width: 100%;
  height: 210p x;
}

.device-list .item .img img {
  display: block;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

.device-list .item .name {
  margin-top: 10px;
  color: #3A4B99;
  font-size: 20px;
  line-height: 34px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  word-wrap: normal;
}

.about-contact {
  margin-top: 10px;
}

.about-contact .item {
  font-size: 20px;
  line-height: 36px;
  color: #3A4B99;
}

.about-contact .item ~ .item {
  margin-top: 25px;
}

.about-contact .item .name {
  font-weight: 600;
}

.about-pos {
  margin-top: 10px;
  color: #3A4B99;
}

.about-pos ~ .about-pos {
  margin-top: 20px;
}

.about-pos .pos-title {
  padding-left: 10px;
  font-weight: 600;
  font-size: 24px;
  line-height: 1;
  position: relative;
  border-left: 6px solid #3A4B99;
}

.about-pos .pos-content {
  margin-top: 10px;
  font-size: 16px;
  line-height: 28px;
  white-space: pre-line;
}

.about-pos-main-black {
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(51, 51, 51, 0.2);
}

.about-pos-main-black ~ .about-pos-main-black {
  margin-top: 40px;
}

.pos-bottom {
  margin-top: 40px;
  font-size: 16px;
  line-height: 28px;
  white-space: pre-line;
  color: #3A4B99;
}

.html-box {
  color: #3A4B99;
}