.lb1 {
  width: 1400rem;
  margin: 96rem auto 220rem;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  /* height: 200px; */
  position: relative;
}

.lb1 .swiper-slide a {
  cursor: pointer;
  display: block;
  text-align: center;
  width: 100%;
  font-size: 22rem;
  font-weight: 500;
  letter-spacing: 0rem;
  line-height: 50rem;
  color: rgba(56, 56, 56, 1);
}
.lb1 .swiper-slide a:hover {
  color: rgba(34, 64, 122, 1);
}
.lb1 .swiper-slide a img {
  width: 460rem;
  height: 320rem;
  display: block;
  margin-bottom: 15rem;
}

.lb1 .swiper-slide {
  width: auto;
}

.lb1 .swiper-button-prev1 {
  left: -104rem;
  width: 48rem;
  height: 48rem;
  background: url(../image/index/biaoqian-arrowL.png) center no-repeat;
  background-size: cover;
  position: absolute;
  cursor: pointer;
}
.lb1 .swiper-button-prev1:hover {
  background: url(../image/index/biaoqian-arrowL-sel.png) center no-repeat;
  background-size: cover;
  position: absolute;
}
.lb1 .swiper-button-next1 {
  right: -104rem;
  width: 48rem;
  height: 48rem;
  background: url(../image/index/biaoqian-arrowR.png) center no-repeat;
  background-size: cover;
  top: calc(50% - 17px);
  position: absolute;
   cursor: pointer;
}
.lb1 .swiper-button-next1:hover {
  background: url(../image/index/biaoqian-arrowR-sel.png) center no-repeat;
  background-size: cover;
  position: absolute;
}

.none {
  display: none;
}
.swiper-button-next1:after,
.swiper-button-prev:after {
  display: none;
}

/*图片轮转*/
.contents {
  width: 100%;
  height: 967rem;
  background: linear-gradient(
      0deg,
      rgb(0, 0, 0, 0.5) 0%,
      rgba(0, 0, 0, 0.5) 100%
    ),
    url(../image/index/banner_bg.png) center no-repeat;
  background-size: cover;
  padding-top: 82rem;
}
.poster_box {
  /* overflow: hidden; */
}
.poster_box h2 {
  font-size: 30px;
  color: #015293;
  font-weight: bold;
  text-align: center;
}
.poster_box h3 {
  font-size: 16px;
  color: #015293;
  margin: 10px 0 35px;
  text-align: center;
}
.poster-main {
  position: relative;
  width: 991rem;
  margin: 0 auto;
}
.poster-main img {
  display: block;
  box-shadow: 0px 0px 10px #222222;
  -webkit-box-shadow: 0px 0px 10px #222222;
}

.poster-main a,
.poster-main img {
  display: block;
  /* width: 470rem;
  height: 622rem; */
  width: 100%;
  height: 100%;
}
.poster-main .poster-list {
  width: 100%;
  height: 622rem;
}
.poster-main .poster-list .poster-item {
  /* width: 470rem !important;
  height: 622rem !important; */
  position: absolute;
  left: 0;
  top: 0;
}
.poster-main .poster-list .poster-item .item {
  position: relative;
  width: 100%;
  height: 100%;
}

/* 所有图片默认为暗色 */
.poster-main .poster-list .poster-item img {
  filter: brightness(0.8) grayscale(0.8);
  transition: filter 0.5s ease;
}

/* 所有标题默认隐藏 */
.poster-main .poster-list .poster-item .poster-item-title {
  opacity: 0;
  visibility: hidden;
  transition: all 0s ease;
}

/* 中间的图片（最高z-index）保持原色并显示标题 */
.poster-main .poster-list .poster-item {
  /* 使用JavaScript来动态添加active类 */
}

.poster-main .poster-list .poster-item.active img {
  filter: none;
}

.poster-main .poster-list .poster-item.active .poster-item-title {
  opacity: 1;
  visibility: visible;
}
.poster-main .poster-btn {
  position: absolute;
  top: 0;
  cursor: pointer;
  filter: opacity(0.5) brightness(1);
}
.poster-main .poster-btn:hover {
  filter: opacity(1) brightness(2);
}
.poster-main .poster-prev-btn {
  width: 40rem !important;
  height: 41rem !important;
  display: block;
  left: -80rem;
  top: 50%;
  transform: translateY(-50%);
  background: url(../image/index/left.png);
  background-size: 100% 100%;
}
.poster-main .poster-next-btn {
  width: 40rem !important;
  height: 41rem !important;
  display: block;
  right: -80rem;
  top: 50%;
  transform: translateY(-50%);
  background: url(../image/index/right.png);
  background-size: 100% 100%;
}
.poster-item-title {
  font-size: 18rem;
  font-weight: 400;
  letter-spacing: 0rem;
  line-height: 26.06rem;
  color: rgba(255, 255, 255, 1);
  position: absolute;
  bottom: -50rem;
  left: 50%;
  transform: translateX(-50%);
}
.lunbo_btn {
  height: 15px;
  width: 100%;
  margin: 0px auto;

  position: absolute;
  z-index: 3;
  text-align: center;
  bottom: 2px;
}
.lunbo_btn li {
  width: 14px;
  height: 14px;
  display: inline-block;
  background-color: #b4b5b7;
  border-radius: 50%;
  margin: 0px 2px;
  cursor: pointer;
}
.lunbo_btn li.poster-btn-active {
  background-color: #0b518a;
}