.a_video {
  display: flex;
  justify-content: space-between;
}

.a_video_l {
  width: 50%;
  height: 0;
  padding-bottom: 28.125%;
  border-radius: 4px;
  overflow: hidden;
  background: #E7EBEF;
  box-shadow: 0px -35px 50px 0px #C6CDD3 inset;
  position: relative;
}

.a_video_wrap {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

.a_video_l video {
  display: block;
  width: auto;
  height: 100%;
  max-height: 560px;
  margin: auto;
  max-width: 100%;
}

.a_video_r {
  width: 48.75%;
  padding: 32px 0 32px 32px;
  border-radius: 4px;
  border: 1px solid #EDEDED;
  background: #FFF;
  position: relative;
  overflow: hidden;
}

.a_video_content {
  padding: 0 16px 0 0;
  max-height: 290px;
  overflow: auto;
  position: relative;
  z-index: 2;
  font-size: 16px;
  line-height: 150%;
  color: #757575;
  margin-right: 16px;
}

.a_video_content::-webkit-scrollbar {
  width: 5px;
  background-color: transparent;
  border-radius: 5px;
}

.a_video_content::-webkit-scrollbar-thumb {
  background-color: rgba(217, 217, 217, 1);
  border-radius: 5px;
}

.a_video_content::-webkit-scrollbar-track {
  background-color: transparent;
  border-radius: 5px;
}

.a_video_box {
  position: relative;
}

.a_video_main_tit {
  margin-right: 32px;
  font-size: 32px;
  line-height: 130%;
  font-weight: 600;
  margin-bottom: 12px;
}

.a_video_main_subtit {
  margin-right: 32px;
  font-size: 20px;
  line-height: 130%;
  margin-bottom: 12px;
  font-weight: 500;
}

.a_video_bg {
  width: 15.3846%;
  position: absolute;
  right: -10px;
  bottom: 0;
  z-index: 1;
}

.a_video_bg img {
  display: block;
  width: 100%;
}

@media only screen and (max-width: 1025px) {
  .a_video_r {
    padding: 16px 0 16px 16px;
  }

  .a_video_content {
    max-height: 172px;
    padding: 0 10px 0 0;
    margin-right: 10px;
    font-size: 12px;
  }

  .a_video_main_tit {
    margin-right: 20px;
    font-size: 18px;
  }

  .a_video_main_subtit {
    margin-right: 20px;
    font-size: 14px;
  }
}

@media only screen and (max-width: 900px) {
  .a_video_content {
    max-height: 102px;
  }

  .a_video_main_tit {
    font-size: 16px;
  }

  .a_video_main_subtit {
    font-size: 12px;
  }
}

@media only screen and (max-width: 767px) {
  .act_content_video_single {
    width: 100%;
  }

  .a_video {
    flex-wrap: wrap;
    margin: 0 12px;
  }

  .a_video_l video {
    max-height: 195px;
  }

  .a_video_l {
    width: 100%;
    padding-bottom: 56.2318%;
    border-radius: 4px 4px 0 0;
  }

  .a_video_r {
    width: 100%;
    border-radius: 0 0 4px 4px;
    padding: 12px 0 12px 12px;
  }

  .a_video_main_tit {
    font-size: 18px;
    margin-bottom: 4px;
    margin-right: 12px;
  }

  .a_video_main_subtit {
    font-size: 14px;
    margin-bottom: 8px;
    margin-right: 12px;
  }

  .a_video_content {
    max-height: 108px;
    margin-right: 2px;
  }

  .a_video_bg {
    width: 13.3%;
  }
}