.md-about-51.md21969 {
  position: relative;
  background-color: #f5f5f5;
  overflow: hidden;
}
.md-about-51.md21969 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 14.4rem;
  max-width: 92%;
}
.md-about-51.md21969 .md-md {
  position: absolute;
  top: -1.3rem;
  visibility: hidden;
}
.md-about-51.md21969 .h2 {
  line-height: 1.25;
}
.md-about-51.md21969 .desc {
  color: var(--active);
  margin-top: 0.03rem;
}
.md-about-51.md21969 .tip {
  padding: 0 10%;
  margin-top: 0.26rem;
  line-height: 1.8;
}
.md-about-51.md21969 .cont {
  padding-top: 0.3rem;
  padding-bottom: 0.6rem;
  position: relative;
}
.md-about-51.md21969 .box {
  margin-top: 0.48rem;
}
.md-about-51.md21969 .box-left {
  width: calc( 240 / 1440 * 100%);
  position: relative;
}
.md-about-51.md21969 .box-left::before {
  content: "";
  width: 1px;
  height: 200vh;
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  background-color: #c4dceb;
}
.md-about-51.md21969 .box-right {
  width: calc( 1110 / 1440 * 100%);
}
.md-about-51.md21969 .swiper-container {
  height: 4.3rem;
}
.md-about-51.md21969 .sw {
  height: auto;
  margin-bottom: 0.5rem;
  color: #bbb;
  cursor: pointer;
  line-height: 1;
  transition: 0.5s;
}
.md-about-51.md21969 .sw:last-child {
  margin-bottom: 0;
}
.md-about-51.md21969 .sw:hover {
  color: var(--active);
}
.md-about-51.md21969 .sw.on {
  color: var(--active);
}
.md-about-51.md21969 .sw.on::before {
  content: "";
  position: absolute;
  right: 0%;
  top: 0%;
  width: 0.05rem;
  height: 100%;
  background-color: #0070bd;
  border-radius: 3px;
}
@media screen and (min-width: 901px) {
  .md-about-51.md21969 .sw.on {
    font-size: calc( 60em / 36);
  }
}
.md-about-51.md21969 .btns {
  margin-top: 0.5rem;
}
.md-about-51.md21969 .sbtn {
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background-color: #e3eef5;
  color: var(--active);
  z-index: 21;
  transition: 0.5s;
  margin-right: 0.2rem;
  cursor: pointer;
}
.md-about-51.md21969 .sbtn:hover {
  background-color: var(--active);
  color: #fff;
}
.md-about-51.md21969 .sbtn svg {
  width: 28%;
  height: 28%;
}
.md-about-51.md21969 .bitem {
  display: none;
}
.md-about-51.md21969 .bitem.show {
  display: block;
}
.md-about-51.md21969 .content {
  line-height: calc(30 / 16);
  height: 6.2rem;
  overflow-y: auto;
  padding-right: 0.4rem;
}
.md-about-51.md21969 .content::-webkit-scrollbar {
  /*滚动条整体样式*/
  width: 5px; /*高宽分别对应横竖滚动条的尺寸*/
  height: 1px;
}
.md-about-51.md21969 .content::-webkit-scrollbar-thumb {
  background: var(--active);
}
.md-about-51.md21969 .content::-webkit-scrollbar-track {
  background: transparent;
}
@media screen and (max-width: 500px) {
  .md-about-51.md21969 .box-left {
    width: 20%;
  }
  .md-about-51.md21969 .box-right {
    width: 75%;
  }
  .md-about-51.md21969 .content {
    padding-right: 0.3rem;
  }
}

.md-com-breadnav.md21969 {
  z-index: 30;
  position: relative;
}
.md-com-breadnav.md21969 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 14.4rem;
  max-width: 92%;
}
.md-com-breadnav.md21969.no-shadow {
  box-shadow: none;
}
.md-com-breadnav.md21969 .bn-swiper {
  max-width: 80%;
}
.md-com-breadnav.md21969 .bn-swiper .bsa {
  position: relative;
  width: auto;
  margin-right: 0.7rem;
  white-space: nowrap;
  transition: color 0.5s;
}
.md-com-breadnav.md21969 .bn-swiper .bsa:hover {
  color: var(--active);
}
.md-com-breadnav.md21969 .bn-swiper .bsa.on {
  color: var(--active);
}
.md-com-breadnav.md21969 .bn-swiper .bsa.on::before {
  content: "";
  width: 100%;
  height: 2px;
  background-color: var(--active);
  position: absolute;
  left: 0;
  bottom: 0;
}
.md-com-breadnav.md21969 .bn-swiper .bsa:last-child {
  margin-right: 0;
}
.md-com-breadnav.md21969 .bn-swiper .cta {
  display: block;
  line-height: 0.8rem;
}
.md-com-breadnav.md21969 .bn-swiper .sp {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
@media screen and (max-width: 900px) {
  .md-com-breadnav.md21969 .bn-swiper {
    max-width: 100%;
  }
  .md-com-breadnav.md21969 .bn-swiper .bsa {
    margin-right: 0.4rem;
  }
}
.md-com-breadnav.md21969 .zone-nav {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  position: relative;
  line-height: 0.42rem;
  padding: 0.1rem 0;
  color: #888;
}
.md-com-breadnav.md21969 .zone-nav .icon {
  margin-right: 0.5em;
  display: inline-flex;
  align-items: center;
}
.md-com-breadnav.md21969 .zone-nav .icon svg {
  width: 1.25em;
  height: 1.25em;
}
.md-com-breadnav.md21969 .zone-nav .sp1 {
  position: relative;
  margin: 0 0.4em;
}
.md-com-breadnav.md21969 .zone-nav .a {
  position: relative;
  transition: all 0.3s;
}
.md-com-breadnav.md21969 .zone-nav .a.on, .md-com-breadnav.md21969 .zone-nav .a:hover {
  color: var(--theme);
  transition: all 0.3s;
}
@media (max-width: 900px) {
  .md-com-breadnav.md21969 .zone-nav {
    width: 100%;
  }
  .md-com-breadnav.md21969 .zone-nav .sp1 {
    margin: 0 0.5em;
  }
}