.md-about-41.md21902 {
  padding-top: 0.3rem;
  padding-bottom: 1.2rem;
  background-color: #fff;
  position: relative;
}
.md-about-41.md21902 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 14.4rem;
  max-width: 92%;
}
.md-about-41.md21902 .md-md {
  position: absolute;
  top: -1.3rem;
  visibility: hidden;
}
.md-about-41.md21902 .h2 {
  line-height: 1.25;
}
.md-about-41.md21902 .desc {
  color: var(--active);
  margin-top: 0.03rem;
}
.md-about-41.md21902 .tip {
  padding: 0 10%;
  margin-top: 0.26rem;
  line-height: 1.8;
}
.md-about-41.md21902 .com-nav {
  margin-top: 0.36rem;
}
.md-about-41.md21902 .com-nav .swiper-container {
  display: inline-block;
  max-width: 100%;
}
.md-about-41.md21902 .com-nav .nsw {
  width: auto;
  min-width: 10em;
  background-color: #f5f5f5;
  border-radius: 1rem;
  padding: 0.13rem 0;
  cursor: pointer;
  margin-right: 0.3rem;
  transition: 0.5s;
}
.md-about-41.md21902 .com-nav .nsw:hover {
  color: var(--active);
}
.md-about-41.md21902 .com-nav .nsw.on {
  background-color: var(--active);
  color: #fff;
}
.md-about-41.md21902 .com-nav .nsw:last-child {
  margin-right: 0;
}
.md-about-41.md21902 .com-nav {
  margin-top: 0.36rem;
}
.md-about-41.md21902 .box {
  margin-top: 0.6rem;
}
.md-about-41.md21902 .bitem {
  display: none;
}
.md-about-41.md21902 .bitem.show {
  display: block;
}
.md-about-41.md21902 .swiper1 {
  width: calc( 215 / 1440 * 100%);
  position: relative;
}
.md-about-41.md21902 .swiper1 .img {
  padding-top: calc( 122 / 215 * 100%);
}
.md-about-41.md21902 .swiper1 .swiper-container {
  height: 5.8rem;
}
.md-about-41.md21902 .sw1 {
  height: auto;
  margin-bottom: 0.3rem;
  cursor: pointer;
}
.md-about-41.md21902 .swiper2 {
  width: calc( 1170 / 1440 * 100%);
}
.md-about-41.md21902 .swiper2 .img {
  padding-top: calc( 660 / 1170 * 100%);
}
.md-about-41.md21902 .thumb-active::before {
  content: "";
  position: absolute;
  left: 0%;
  top: 0%;
  width: 100%;
  height: 100%;
  border: 2px solid var(--active);
  z-index: 1;
  pointer-events: none;
}
.md-about-41.md21902 .btns {
  pointer-events: none;
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
}
.md-about-41.md21902 .sbtn {
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background-color: #e3eef5;
  color: var(--active);
  z-index: 21;
  transition: 0.5s;
  margin: 0 0.1rem;
  pointer-events: auto;
  cursor: pointer;
}
.md-about-41.md21902 .sbtn:hover {
  background-color: var(--active);
  color: #fff;
}
.md-about-41.md21902 .sbtn svg {
  width: 16%;
  height: 28%;
}
.md-about-41.md21902 .watch {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 1em;
  height: 1em;
  color: #fff;
  cursor: pointer;
}
.md-about-41.md21902 .watch svg {
  width: 100%;
  height: 100%;
}
@media screen and (max-width: 900px) {
  .md-about-41.md21902 .swiper1 {
    width: 100%;
    order: 2;
    margin-top: 0.2rem;
  }
  .md-about-41.md21902 .swiper1 .swiper-container {
    height: auto;
  }
  .md-about-41.md21902 .sw1 {
    width: 32%;
    margin-right: 2%;
    margin-bottom: 0;
  }
  .md-about-41.md21902 .swiper2 {
    width: 100%;
    order: 1;
  }
  .md-about-41.md21902 .btns {
    position: static;
    margin-top: 0.2rem;
  }
}

.md-about-42.md21902 {
  padding-top: 0.92rem;
  padding-bottom: 0.6rem;
  position: relative;
  background-color: #f5f5f5;
}
.md-about-42.md21902 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 14.4rem;
  max-width: 92%;
}
.md-about-42.md21902 .md-md {
  position: absolute;
  top: -1.3rem;
  visibility: hidden;
}
.md-about-42.md21902 .h2 {
  line-height: 1.25;
}
.md-about-42.md21902 .desc {
  color: var(--active);
  margin-top: 0.03rem;
}
.md-about-42.md21902 .tip {
  padding: 0 10%;
  margin-top: 0.26rem;
  line-height: 1.8;
}
.md-about-42.md21902 .com-nav {
  margin-top: 0.36rem;
}
.md-about-42.md21902 .com-nav .swiper-container {
  display: inline-block;
  max-width: 100%;
}
.md-about-42.md21902 .com-nav .nsw {
  width: auto;
  min-width: 10em;
  background-color: #f5f5f5;
  border-radius: 1rem;
  padding: 0.13rem 0;
  cursor: pointer;
  margin-right: 0.3rem;
  transition: 0.5s;
}
.md-about-42.md21902 .com-nav .nsw:hover {
  color: var(--active);
}
.md-about-42.md21902 .com-nav .nsw.on {
  background-color: var(--active);
  color: #fff;
}
.md-about-42.md21902 .com-nav .nsw:last-child {
  margin-right: 0;
}
.md-about-42.md21902 .com-nav {
  margin-top: 0.36rem;
}
.md-about-42.md21902 .com-nav .nsw {
  background-color: #fff;
}
.md-about-42.md21902 .bitem {
  display: none;
}
.md-about-42.md21902 .bitem.show {
  display: block;
}
.md-about-42.md21902 .list {
  margin-top: 0.6rem;
}
.md-about-42.md21902 .li {
  width: calc(450 / 1440 * 100%);
  margin-right: calc(45 / 1440 * 100%);
}
.md-about-42.md21902 .li:nth-child(3n) {
  margin-right: 0;
}
.md-about-42.md21902 .li {
  margin-bottom: 0.6rem;
}
.md-about-42.md21902 .dd {
  position: relative; 
  cursor: pointer;
  transition: 0.5s;
}
.md-about-42.md21902 .dd:hover .img {
  transform: scale(1.1);
}
.md-about-42.md21902 .img {
  padding-top: calc( 337 / 450 * 100%);
}
.md-about-42.md21902 .text{
    margin-top: 0.12rem;
}
@media screen and (max-width: 900px) {
  .md-about-42.md21902 .list {
    justify-content: space-between;
  }
  .md-about-42.md21902 .li {
    width: 48%;
    margin-right: 0;
    margin-bottom: 4%;
  }
}