.scientific {
  background-color: #fff;
  padding: 32px;
}

.scientific-detail {
  display: flex;
  flex-wrap: wrap;
}

.scientific-detail-item {
  background: #f8f8f8;
  padding: 50px 30px;
  height: 350px;
  width: 25%;
  position: relative;
}

.scientific-detail-item .cover {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  opacity: 0;
  z-index: 0;
  transition: all 2000ms;
}

.scientific-detail-item:hover .cover {
  opacity: 1;
  transition: all 1000ms;
}

.scientific-detail-item:hover .title {
  color: #cccccc;
  transition: all 1000ms;
}

.scientific-detail-item:hover .content {
  display: none;
  transition: all 1000ms;
}

.scientific-detail-item .num {
  font-size: 30px;
  font-weight: bold;
  color: #ccc;
  line-height: 30px;
  transition: all 1000ms;
}

.scientific-detail-item .title {
  font-size: 15px;
  font-weight: bold;
  color: #2c2c2c;
  line-height: 18px;
  height: 36px;
  margin: 30px 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  transition: all 1000ms;
}

.scientific-detail-item .content {
  font-size: 12px;
  font-weight: 400;
  color: #a5a5a5;
  line-height: 20px;
  height: 40px;
  margin-bottom: 50px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  transition: all 1000ms;
  /* Á½¶Ë¶ÔÆë */
  text-align: justify;
}

.scientific-detail-item .detail {
  font-size: 12px;
  font-weight: 400;
  color: #a5a5a5;
  line-height: 18px;
  transition: all 1000ms;
}

.scientific-detail-item .detail span:last-child {
  color: #2b2b2b;
  position: relative;
  cursor: pointer;
}

.scientific-detail-item .detail span:last-child::after {
  content: "";
  width: 16px;
  height: 16px;
  border: 1px solid #2b2b2b;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: -3px;
}

.scientific-base .scientific-base-item {
  position: relative;
  background: #fff;
  border: 1px solid #efefef;
  margin-right: 30px;
  margin-bottom: 28px;
  width: 47%;
  padding: 30px 28px;
}

.scientific-base-item .title {
  font-size: 14px;
  font-family: Source Han Sans CN;
  line-height: 24px;
  height: 48px;
  color: #333;
  font-weight: bold;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.scientific-base-item .time {
  position: relative;
  top: 2px;
  left: 2px;
  font-size: 14px;
  font-family: Arial;
  font-weight: 400;
  color: #515151;
}

.scientific-base-item .content {
  font-size: 14px;
  font-family: Source Han Sans CN;
  font-weight: 400;
  color: #767676;
  line-height: 20px;
  height: 40px;
  margin-top: 17px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.scientific-base-item .detail {
  font-size: 13px;
  font-family: Source Han Sans CN;
  font-weight: 300;
  color: #3c3b3b;
  line-height: 28px;
  margin-top: 35px;
}

.scientific-base-item .detail .el-icon-arrow-right {
  color: #bc1c21;
}

.scientific-base-item-item:nth-child(2n) {
  margin-right: 0;
}

.scientific-base-item::before {
  content: "";
  width: 2px;
  height: 135px;
  background: #bc1c21;
  position: absolute;
  left: 0;
  top: 36px;
}

@media screen and (max-width: 600px) {
  .scientific {
    padding: 8px;
  }

  .scientific-detail-item .num {
    font-size: 18px;
    line-height: 20px;
  }

  .scientific-detail-item {
    height: 230px;
    padding: 30px 10px;
    width: 50%
  }

  .scientific-detail-item .title {
    margin: 6px 0;
    line-height: 18px;
    height: 36px;
  }

  .scientific-detail-item .content {
    margin-bottom: 16px;
    line-height: 18px;
    height: 36px;
  }

  .offset-2 {
    margin-left: 0;
  }

  .scientific-base .scientific-base-item {
    margin-right: 12px !important;
    margin-bottom: 14px !important;
    width: 100% !important;
    padding: 15px 14px !important;
  }

  .scientific-base-item .title {
    line-height: 20px;
    height: 40px;
  }

  .scientific-base-item .content {
    line-height: 16px;
    height: 32px;
  }

  .scientific-base-item::before {
    top: 18px;
    height: 84px;
  }

}