.main{
  max-width: 1120px;
  min-height: 1000px;
  margin: auto;
  margin-bottom: 20px;
}
.a-item:hover{
  text-decoration: underline;
}
.content{
  margin-top: 20px;
}
.content-one{
  display: grid;
  grid-template-columns: repeat(2,1fr);
}
.content-one .item{
  background-color: #fff;
  text-align: left;
  border-bottom: 1px solid #8f897c!important;
  padding: 0 0 0 20px;
}
.content-one .item p{
  margin: 0;
}
.content-one .item .content-one-title{
  font-size: 28px;
  font-weight: 700;
}
.content-one .item img{
  width: 100%;
  display: block;
}
.content-one .item-img{
  display: block;
}
.content-one .item .content-one-classify{
  font-size: 14px;
  color: #8f897c;
  padding: 10px 0 10px 0;
}
.content-one .item .content-one-intro{
  line-height: 24px;
  font-size: 14px;
}
.content-two{
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4,1fr);
  row-gap: 10px;
  column-gap: 20px;
}
.content-two .item{
  background-color: #fff;
  border-bottom: 1px solid #8f897c!important;
}
.content-two .item .item-bottom{
  padding: 0 10px 30px 10px;
}
.content-two .item .item-bottom p{
  margin: 0;
  padding: 0 10px 0 10px;
  font-size: 16;
  font-weight: 700;
}
.content-two .item .item-bottom .item-bottom-classify{
  font-size: 14px;
  color: #8f897c;
  padding-top: 10px;
  font-weight: 500;
}
.content-two .item .item-top img{
  width: 100%;
}
.content-three{
  margin-top: 20px;
  width: 70%;
  display: grid;
  grid-template-columns: repeat(2,1fr);
  row-gap: 20px;
  column-gap: 20px;
}
.content-three .item{
  display: flex;
  border-bottom: 1px solid #8f897c!important;
  background-color: #fff;
}
.content-three .item .item-left{
  width: 50%;
}
.content-three .item .item-right{
  padding-left: 10px;
  width: 50%;
  font-size: 16px;
}
.content-three .item .item-right p{
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2; /* 限制在两行内 */
  overflow: hidden;
  text-overflow: ellipsis;
}
.content-three .item .item-right-classify{
  font-size: 14px;
  color: #8f897c;
}
.content-three .item .item-left img{
  width: 100%;
}
.content-four .content-four-title{
  display: block;
  font-size: 30px;
  margin-top: 20px;
  margin-bottom: 20px;
  font-weight: 700;
}
.content-four .content-four-title:hover{
  color: #CC0013;
  text-decoration: underline;
}
.content-four>.item{
  display: grid;
  grid-template-columns: repeat(4,1fr);
  grid-template-rows: repeat(3,1fr);
  row-gap: 10px;
  column-gap: 20px;
}
.content-four>.item>.item-content{
  display: block;
  background-color: #fff;
  border-bottom: 1px solid #8f897c!important;
}
.content-four>.item>.item-content:nth-child(1){
  position: relative;
  grid-row: 1/span 3;
  grid-column: 1/span 2;
}
.content-four>.item>.item-content:nth-child(2){
  grid-row: 1/span 3;
  grid-column: 3/span 1;
}
.content-four>.item>.item-content:nth-child(3){
  grid-row: 1/span 1;
  grid-column: 4/span 1;
}
.content-four>.item>.item-content:nth-child(4){
  grid-row: 2/span 1;
  grid-column: 4/span 1;
}
.content-four>.item>.item-content:nth-child(5){
  grid-row: 3/span 1;
  grid-column: 4/span 1;
}
.content-four>.item>.item-content:nth-child(6){
  display: none;
}
.content-four>.item>.item-content>img{
  width: 100%;
}
.content-four .item .item-left{
  /* position: relative; */
}
.content-four .item .item-left img{
  width: 100%;
  display: block;
}
.content-four .item .item-left p{
  width: 100%;
  position: absolute;
  top: 70%;
  left: 50%;
  font-size: 24px;
  transform: translate(-50%,-50%);
}
.content-four .item .item-left p span{
  color: #fff;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2; /* 限制在两行内 */
  overflow: hidden;
  text-overflow: ellipsis;
  padding-left: 10px;
  line-height: 60px;
  font-weight: 700;
}
.content-four .item .item-right-left p{
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  padding-left: 10px;
}
.content-four .item .item-right-left .classify{
  font-size: 12px;
  padding-top: 10px;
  color: #8f897c;
}
.content-four .item .item-right-left img{
  width: 100%;
}
.content-four .item .item-right{
  display: grid;
  grid-template-columns: repeat(2,1fr);
  column-gap: 20px;
}
.content-four .item .item-right-right{
  display: grid;
  grid-template-columns: repeat(1,1fr);
  row-gap: 20px;
}
.content-four .item .item-right-right .item p{
  margin: 0;
  font-size: 15px;
  padding-left: 10px;
  padding-top: 10px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2; /* 限制在两行内 */
  overflow: hidden;
  text-overflow: ellipsis;
}
.content-four .item .item-right-right .item .classify{
  font-size: 12px;
  padding-top: 10px;
  color: #8f897c;
}
.content-four .item .item-right-right .item img{
  display: none;
}

@media screen and (max-width:1100px){
  .main{
    max-width: 780px;
  }
  .content-one{
    grid-template-columns: repeat(1,1fr);
  }
  .content-one .item-img{
    padding: 0;
  }
  .content-one .item:nth-child(1){
    grid-row: 2/span 1;
  }
  .content-one .item:nth-child(2){
    grid-row: 1/span 1;
  }
  .content-two{
    grid-template-columns: repeat(2,1fr);
  }
  .content-three{
    grid-template-columns: repeat(2,1fr);
    width: 100%;
  }
  .content-four>.item{
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
  }
  .content-four>.item>.item-content:nth-child(1){
    grid-row: 1 / span 2;
    grid-column: 1 / span 4;
  }
  .content-four>.item>.item-content:nth-child(2){
    grid-row: 3 / span 2;
    grid-column: 1 / span 2;
  }
  .content-four>.item>.item-content:nth-child(3){
    grid-row: 3 / span 1;
    grid-column: 3 / span 1;
  }
  .content-four>.item>.item-content:nth-child(4){
    grid-row: 4 / span 1;
    grid-column: 3 / span 1;
  }
  .content-four>.item>.item-content:nth-child(5){
    grid-row: 3 / span 1;
    grid-column: 4 / span 1;
  }
  .content-four>.item>.item-content:nth-child(6){
    display: block;
    grid-row: 4 / span 1;
    grid-column: 4 / span 1;
  }
  .content-four .item .item-right-right .item img{
    display: block;
    width: 100%;
  }
}
@media screen and (max-width:700px){
  .main{
    padding: 10px;
  }
  .content-two{
    column-gap: 10px;
  }
  .content-two .item .item-bottom p{
    font-size: 14px;
    padding: 10px 0 0 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3; /* 限制在两行内 */
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .content-two .item .item-bottom .item-bottom-classify{
    font-size: 12px;
  }
  .content-three{
    grid-template-columns: repeat(1,1fr);
  }
  .content-four>.item{
    grid-template-columns: repeat(1, 1fr);
    grid-template-rows: repeat(1, 1fr);
  }
  .content-four>.item>.item-content:nth-child(1){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four>.item>.item-content:nth-child(2){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four>.item>.item-content:nth-child(3){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four>.item>.item-content:nth-child(4){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four>.item>.item-content:nth-child(5){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four>.item>.item-content:nth-child(6){
    grid-row: auto;
    grid-column:auto;
  }
  .content-four .item .item-right-right .item img{
    display: block;
    width: 100%;
  }
  .content-four .item .item-left p span{
    top: 70%;
    line-height: 30px;
  }
  .content-three .item .item-left{
    width: 30%;
  }
  .content-three .item .item-right{
    width: 70%;
  }
  .content-three .item .item-right p{
    margin: 0;
    font-size: 13px;
  }
  .content-four .item .item-right-right .item p{
    font-size: 13px;
    padding-top: 4px;
  }
  .content-four .item .item-right-left p{
    font-size: 13px;
  }
  .content-two .item .item-bottom p{
    font-size: 13px;
  }
  .content-one .item .content-one-intro{
    font-size: 13px;
  }
}