/* shr二级 产品介绍 */
.product_xc_do {
  background: url(../images/product/product_xc_do_bg.png) no-repeat center;
  background-size: cover;
  padding: 3.75% 0 3.33%;
}

.product_xc_do .big_title {
  text-align: center;
  font-weight: 600;
  margin-bottom: 24px;
}

.product_xc_do .des {
  text-align: center;
  width: 75%;
  margin: 0 auto;
  margin-bottom: 34px;
}

.product_xc_do .img {
  text-align: center;
  width: 65.3%;
  margin: 0 auto;
  position: relative;
}

.product_xc_do .img img {
  max-width: 100%;
}

.product_xc_do .img .video-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.product_xc_do .img .video-btn img {
  transition: all 0.4s ease;
}

.product_xc_do .img .video-btn:hover img {
  transform: rotate(120deg);
}