ul {
  list-style: none;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.main-box {
  position: relative;
  width: 1240px;
  padding: 25px 100px 180px;
  margin: 0 auto;

}
@media (max-width: 1200px) {
  .main-box {
    width: 100%;
    padding: 0 2.5% 150px;
  }
}
.main-box .top-box {
  padding: 18px 32px 13px 31px;
  background-color: #f5f7fa;
  border-radius: 6px;
  margin-bottom: 35px;
}
.main-box .main-tab-title {
  display: flex;
  align-items: center;
  border-bottom: 1px solid #E8E8E8;
  margin-bottom: 25px;
}
.main-box .main-tab-title li {
  font-size: 17px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
  line-height: 24px;
  padding: 8px 2.5px;
  position: relative;
  margin-right: 42px;
  cursor: pointer;
}
.main-box .main-tab-title li:last-of-type {
  margin-right: 0;
}
.main-box .main-tab-title li:hover {
  color: #3685F2;
}
.main-box .main-tab-title li.active:after {
  content: "";
  display: block;
  width: 100%;
  height: 3px;
  background: #3685F2;
  position: absolute;
  bottom: 0;
  left: 0;
}
.main-box .item-tab-title {
  align-items: center;
  flex-wrap: wrap;
  display: none;
}
.main-box .item-tab-title li {
  cursor: pointer;
  font-size: 14px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #3A4956;
  line-height: 20px;
  width: 66px;
  text-align: center;
  line-height: 28px;
  margin: 2.5px 12px 2.5px 0;
}
.main-box .item-tab-title li:hover {
  color: #3685F2;
}
.main-box .item-tab-title li.active {
  background: rgba(54, 133, 242, 0.13);
  border-radius: 14px;
  color: #3685F2;
}
.main-box .item-tab-title.active {
  display: flex;
}
.main-box .main-tab-content .item-box {
  display: none;
}
.main-box .main-tab-content .item-box.active {
  display: block;
}
.main-box .main-tab-content .item-box .item-tab-content {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item {
  padding: 7.5px;
  width: 33.3333%;
}
@media (max-width: 1200px) {
  .main-box .main-tab-content .item-box .item-tab-content .filtr-item {
    width: 33.33%;
    padding: 1.5%;
  }
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box {
  width: 100%;
  /* min-height: 236px; */
  border-radius: 2px;
  border: 1px solid #E8E8E8;
  transition: all 0.5s;
  position: relative;
}
@media (max-width: 1200px) {
  .main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box {
    width: 100%;
    height: auto;
  }
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .img-box {
  /* height: 180px; */
  overflow: hidden;
  position: relative;
  display: block;
}
/* .main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .img-box img {
  width: 100%;
  height: 100%;
  transition: all 0.2s;
  position: absolute;
  left: 0;
  top: 0;
} */
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .img-box img.i-gif {
  display: none;
  max-width: 100%;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .img-box img.i-jpg {
  display: block;
  max-width: 100%;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box {
  background: #FBFBFB;
  min-height: 54px;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .t-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px  15px 0;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .t-box h4 {
  font-size: 14px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #3A4956;
  line-height: 14px;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .t-box .tooltip {
  opacity: 0;
  transition: all 0.5s;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .js-box {
  width: 100%;
  padding: 5px 15px 15px;
  left: 0;
  background: #FBFBFB;
  top: 54px;
  display: none;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .js-box h5 {
  font-size: 12px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #3A4956;
  line-height: 12px;
  margin-bottom: 5px;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .js-box p {
  font-size: 12px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #525F6B;
  line-height: 20px;
  margin-bottom: 10px;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item .nr-box .txt-box .js-box p:last-of-type {
  margin-bottom: 0;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover {
  z-index: 999;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box {
  transform: scale(1.05);
  box-shadow: 0 0 13px #cccccc;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .img-box img.i-gif {
  display: block;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .img-box img.i-jpg {
  display: none;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .txt-box {
  cursor: pointer;
  border-top: 1px solid #e8e8e8;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .txt-box .t-box h4 {
  font-weight: bold;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .txt-box .tooltip {
  opacity: 1;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .txt-box .js-box {
  display: block;
}
.main-box .main-tab-content .item-box .item-tab-content .filtr-item:hover .nr-box .txt-box .js-box h5 {
  font-weight: bold;
}
@media (max-width: 600px){
  .main-box .main-tab-content .item-box .item-tab-content .filtr-item {
    width: 50%;
    padding: 1.5%;
  }
}