/* 核心介绍 */

.r-h3 {
  font-size: 40px;
  color: #2a2e2e;
  font-style: italic;
  font-family: 'Alibaba-PuHuiTi-Medium';
  text-align: center;
}

.commercial {
  width: 100%;
  min-width: 1280px;
  margin-top: 100px;
}

.commercial .commer-con {
  width: 1250px;
  margin: 0 auto;
}

.commercial .commer-con .desc {
  font-size: 20px;
  font-weight: 400;
  color: #6F6965;
  margin-top: 80px;
}

.commercial .commer-con .c-img {
  width: 1250px;
  height: 544px;
  overflow: hidden;
  margin-top: 50px;
}