.main-top{ padding: 50px 0 0 0;}
.main-top p{text-align: center; font-size: 24px;}


.prolist ul{display:flex; flex-wrap:wrap;margin:-15px -11px 0; padding: 0;}

.prolist ul li {
  width: 33.3333333333%;
  padding:15px 11px;
  position: relative;
  box-sizing: border-box;
  text-align: center;
}

.prolist ul li .pic {
  display: block;
  overflow: hidden;
  width: 100%;
  position: relative;
  background: #DFECDE;
}

.prolist ul li:nth-child(2n) .pic {
  background: #E8F4E6;
}

.prolist ul li .pic::after {
  content: "";
  display: none;
  background: rgba(0, 0, 0, 0.35) url(../images/i2.png) no-repeat center;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

.prolist ul li .pic img {
  width: 100%;
  display: block;
  transition: all 0.3s ease 0s;
}

.prolist ul li p {
  margin: 20px 0 0;
  text-align: center;
  font-size: 16px;
}

.prolist ul li p a {
  color: #212121;
}

.prolist ul li p a:hover {
  text-decoration: underline;
}


@media screen and (max-width:1441px) {


}

@media screen and (max-width:1280px) {

}

@media screen and (max-width:992px) {

}

@media screen and (min-width:992px){
   .prolist ul li:hover .pic img {
      transform: scale(1.04);
      -webkit-transform: scale(1.04);
    }
    .prolist ul li:hover .pic p {
      color: #fff;
    }
    .prolist ul li:hover>.pic::after {
      display: block;
    }
   .prolist ul li:hover p a {
      text-decoration: underline;
    }
  .rtit h1{
  margin-left:0 !important;
  }
  


}

@media screen and (max-width: 992px){
  
  .main-top{ padding: 30px 0 0 0;}
  .main-top p {font-size: 20px;}
}

@media screen and (max-width:768px) {

  .prolist ul {
    margin: -20px -8px 0;
  }

  .prolist ul li {
    width: 50%;
    padding: 0 8px;
    margin-top: 20px;
  }

  .prolist ul li p {
    margin: 15px 0 0;
    font-size: 15px;
  }
  
    .main-top p {
    font-size: 18px;
}
}

@media screen and (max-width: 480px) {
  .main-top p {
    font-size:16px;
}
  
  .main-top{ padding: 20px 0 0 0;}
}