.banner .bg {
  background-image: url("/images/news_center/banner.jpg");
}

.main {
  overflow: hidden;
  width: 100%;
  min-width: 320px;
}

.main .tab {
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 110px 0 40px;
  font-size: 34px;
  line-height: 1;
}

.main .tab .tab-item-active {
  cursor: pointer;
  color: #333333 !important;
}

.main .tab .tab-item {
  cursor: pointer;
  color: #a8a8a8;
}

.main .tab i::after {
  content: "";
  display: block;
  width: 4px;
  height: 34px;
  margin: 0 22px;
  background: #e5e5e5;
}

.main .waterfall {
  width: 1440px;
  max-width: 90%;
  min-width: 75%;
  margin: 0 auto;
}

.main .waterfall .left .item,
.main .waterfall .center .item,
.main .waterfall .right .item {
  border-bottom: 3px solid #ebebeb;
}

.main .waterfall .left .item-pic,
.main .waterfall .center .item-pic,
.main .waterfall .right .item-pic {
  width: 100%;
  overflow: hidden;
  transition: all 1s;
}

.main .waterfall .left .item-pic img,
.main .waterfall .center .item-pic img,
.main .waterfall .right .item-pic img {
  width: 100%;
}

.main .waterfall .left .item-pic img:hover,
.main .waterfall .center .item-pic img:hover,
.main .waterfall .right .item-pic img:hover {
  transform: scale(1.1);
}

.main .waterfall .left .item-text .sup,
.main .waterfall .center .item-text .sup,
.main .waterfall .right .item-text .sup {
  padding: 30px 0;
  line-height: 1;
  color: #949494;
  font-weight: bold;
}

.main .waterfall .left .item-text h3,
.main .waterfall .center .item-text h3,
.main .waterfall .right .item-text h3 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-height: 1.6;
  margin-bottom: 16px;
  color: #444;
}

.main .waterfall .left .item-text p,
.main .waterfall .center .item-text p,
.main .waterfall .right .item-text p {
  line-height: 1.3;
  color: #999;
}

.main .waterfall .left {
  width: 39.31%;
}

.main .waterfall .left .item {
  padding: 60px 0 50px;
}

.main .waterfall .left .item:first-child {
  padding-top: 40px;
}

.main .waterfall .center {
  margin-left: 7%;
}

.main .waterfall .center,
.main .waterfall .right {
  width: 22.64%;
}

.main .waterfall .center .item,
.main .waterfall .right .item {
  padding: 40px 0 30px;
}

.main .waterfall .center .item .sup,
.main .waterfall .right .item .sup {
  padding-bottom: 20px;
}

.main .waterfall .center .item .item-text h3,
.main .waterfall .right .item .item-text h3 {
  margin-bottom: 10px;
}

.main .waterfall .center:nth-child(1),
.main .waterfall .right:nth-child(1) {
  padding-top: 0px;
}

.main .waterfall .center .item:nth-child(3) {
  padding-top: 0;
}

.main .waterfall .center .item:nth-child(3) .item-text {
  padding-top: 0;
}

.main .waterfall .right .item:last-child {
  padding-top: 0;
}

.main .more {
  padding: 120px 0 120px;
}

.main .more .more-btn {
  display: block;
  box-sizing: border-box;
  width: 15.28%;
  margin: 0 auto;
  font-size: 16px;
  line-height: 16px;
  font-weight: bold;
  color: #333333;
  text-align: center;
  padding: 16px 0;
  border: 1px solid #aaaaaa;
  cursor: pointer;
}

@media all and (max-width: 768px) {
  .main .tab {
    font-size: 18px;
    margin: 30px 0 10px;
  }
  .main .tab i::after {
    height: 18px;
  }
  .main .waterfall {
    flex-direction: column;
  }
  .main .waterfall .left,
  .main .waterfall .center,
  .main .waterfall .right {
    width: 100%;
    margin-left: 0;
  }
  .main .waterfall .left .item,
  .main .waterfall .center .item,
  .main .waterfall .right .item {
    padding: 20px 0;
  }
  .main .waterfall .left .item .item-text .sup,
  .main .waterfall .center .item .item-text .sup,
  .main .waterfall .right .item .item-text .sup {
    padding: 15px 0;
    line-height: 16px;
  }
  .main .more {
    padding: 30px 0;
  }
  .main .more .more-btn {
    width: 30%;
    font-size: 14px;
    padding: 10px 0;
  }
}