#page4-1 .cover-sm{
  overflow-y: hidden;
  position: relative;
  box-sizing: border-box;
  background-color:#000;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100%;
  padding: 110px 0px !important;
}
#page4-1 .cover-sm::after{
  content: '';
  display: block;
  margin-top: 66.6666%; /* margin 百分比相对父元素宽度计算 */
  position: absolute;
  top: 0px;
  left: 0px;
}

#page4-1 .border-dot{
  margin:60px auto;
  background-size: 1.3%;
  opacity: .8;
}

#page4-1 .news-card{
  padding:0px;
  /* margin-bottom: 120px; */
}

#page4-1 .news-card:last-child{
  margin-bottom: 100px;
}


#page4-1 .left-block{
  padding-right: 40px;
}

#page4-1 .news-card .title{ 
  font-size: 20px;
  font-weight: bold;
  line-height: 1.8;
}


#page4-1 .news-card .date{ 
  font-size: 18px;
  line-height: 2.89;
  letter-spacing: 1.8px;
}


#page4-1 .news-card .content{ 
  font-size: 16px;
  line-height: 1.88;

  display : -webkit-box;
  overflow : hidden;
  text-overflow : ellipsis;

  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  max-height: 90px;
}

#page4-1 .news-card .more-link{
  font-size: 14px;
  line-height: 2.14;
  text-align: center;
  padding:0px;
  color:#bbbbbb;
  margin-top:19px;
}

#page4-1 .news-card .more-link:hover{
  text-decoration: none;
  color:#bbbbbb;
}

#page4-1 .news-detail{
  padding-left:40px;
}

@media (max-width:767px){

  #page4-1 .news-card {
    margin-bottom: 15px !important;
  } 
  #page4-1 .cover-sm{
    margin:0px !important;
  }

  #page4-1 .cover-sm::after {
      margin-top: 66.15% !important;
  }

  #page4-1 .news-card .title {
    font-size: 18px;
    font-weight: bold;
    font-stretch: normal;
    font-style: normal;
    line-height: 1.61;
    letter-spacing: normal;
    text-align: left;
    color: #3b3b3b;

    margin:0px !important;
  }

  #page4-1 .news-card .date {
    width: 100% !important;
    font-size: 13px;
    font-weight: normal;
    font-stretch: normal;
    font-style: normal;
    line-height: 4;
    letter-spacing: 1.3px;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  #page4-1 .news-card .more-link,#page4-1 .news-card .content{
    display: none !important;
  }

  .news-detail{
    padding: 20px !important;
    background-color: rgba(245, 245, 245, 0.7);
    margin: 0px !important;
  }

  #page4-1 .left-block{
    padding-right: 0px;
  } 

}


@media (min-width:500px) and (max-width:767px){
  #page4-1 .col-sm-8{
    display: flex;
  }

  #page4-1 .news-detail{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  #page4-1 .news-card .title{
    font-size: 3vw;
  }

  #page4-1 .news-card .date{
    font-size: 2vw;
  }
}