.block-p {
    position: relative;
    padding-bottom: 45.47%;
    overflow: hidden;
    z-index: 9;
}
.block-c .item {
    margin-top: 10px;
    margin-left: 10px;
    margin-right: 10px;
    padding-bottom: 41.5%;
    position: relative;
    overflow: hidden;
}
.block-p img,
.block-c .item img {
    display: block;
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
}
.block-p::before,
.block-c .item::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}
.block-p::after {
    content: "";
    position: absolute;
    right: 15px;
    top: 50%;
    width: 13.5px;
    height: 8px;
    background: url(../img/sitemap/arrow.png) no-repeat center / 100%;
    z-index: 2;
    transition: -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    -webkit-transition: -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
}
.block-p.arrow-right::after {
  transform: rotate(90deg)
}
.block-p.active::after {
  transform: rotate(180deg)
}
.block-p .title,
.block-c .item .title {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    text-align: center;
    color: #fff;
    font-size: 27px;
    z-index: 2;
    font-family: serif;
}
.block-c .item .title {
    font-size: 20px;
}
.block {
  overflow: hidden;
  position: relative;
}
.block-c {
    padding-bottom: 10px;
    overflow: hidden;
    /* position: absolute; */
    left: 0;
    top: 0;
    right: 0;
    height: 0;
    transition: -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    -webkit-transition: -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1),
        -webkit-transform 0.2s cubic-bezier(0.2, 0.8, 0.7, 1);
    -webkit-transform: translateY(-100%);
    transform: translateY(-100%);
    -webkit-transform-origin-y: top;
}
.block-c.active {
    height: auto;
    -webkit-transform: translateY(0%);
    transform: translateY(0%);
}

.dis img {
  width: 88%;
  padding: 87px 0 90px;
  margin: 0 auto;
  display: block;
  max-width: 1400px;
  min-width: 1200px;
}

.banner-layer {
  width: 100%;
  display: block;
}
.layer-cont {
  font-size: 13px;
  color: #000;
  line-height: 2;
  padding: 20px;
  font-family: "Microsoft YaHei", PingFangSC-Regular, sans-serif;
}
.layer-cont section {
  text-indent: 20px;
}
@media screen and (max-width: 1000px) {
  .dis img {
    max-width: initial;
    min-width: initial;
    padding: 10px;
  }
}