.brief_introduction {
  width: 100%;
  position: relative;
  margin-top: 8.75rem;
}
.brief_introduction .bg_logo {
  width: 29.625rem;
  height: 28.75rem;
  position: absolute;
  right: 0;
  top: 0;
}
.brief_introduction .bg_logo .stripe_que {
  width: 29.625rem;
  max-width: 100%;
  position: absolute;
  z-index: -1;
}
.brief_introduction .bg_logo .stripe_que img {
  max-width: 100%;
}
.brief_introduction .bg_logo .stripe_logo {
  width: 24.875rem;
  max-width: 100%;
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 0;
}
.brief_introduction .bg_logo .stripe_logo img {
  max-width: 100%;
}
.brief_introduction .introduction_row {
  margin-bottom: 3.75rem;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.brief_introduction .introduction_row .row_left {
  width: 49.375rem;
  height: 24.75rem;
  position: relative;
}
.brief_introduction .introduction_row .row_left .an_image_box {
  width: 100%;
  height: 100%;
}
.brief_introduction .introduction_row .row_left .main_sub_line {
  width: 11.25rem;
  height: 0.625rem;
  background: var(--mainColor);
  position: absolute;
  right: -5rem;
  top: 3.125rem;
}

.brief_introduction .introduction_row .row_right .title_sub_line{
 position: relative;
}
.brief_introduction .introduction_row .row_right .title_sub_line .main_sub_line {
  width: 11.95rem;
  height: 0.625rem;
  background: var(--mainColor);
  position: absolute;
  top: -2.125rem;
}
.brief_introduction .introduction_row .row_right {
  margin-left: 8.125rem;
  width: 33.125rem;
}
.brief_introduction .introduction_row .row_right a h4 {
  font-size: 1.625rem;
  color: #000;
  margin-bottom: 1.5rem;
  -webkit-transition: all ease-in-out 0.6s;
  transition: all ease-in-out 0.6s;
}
.brief_introduction .introduction_row .row_right a .sub {
  font-size: 1.125rem;
  color: #636363;
  margin-bottom: 1.75rem;
}
.brief_introduction .introduction_row .row_right a .sub span {
  padding-right: 0.75rem;
}
.brief_introduction .introduction_row .row_right a .info {
  font-size: 1.125rem;
  color: #000;
  -webkit-transition: all ease-in-out 0.6s;
  transition: all ease-in-out 0.6s;
height: 13rem;
    line-height: 1.85rem;
position: relative;
z-index: 10;
}
.brief_introduction .introduction_row .row_right a .more_box {
  margin-top: 1.875rem;
}
.brief_introduction .introduction_row .row_right a:hover h4,
.brief_introduction .introduction_row .row_right a:hover .info,
.brief_introduction .introduction_row .row_right a:hover .more_box .more_border {
  color: var(--mainColor);
}
.brief_introduction .introduction_row .row_right a:hover .more_box .more_border {
  border-color: var(--mainColor);
}

@media (max-width: 992px) {
  .brief_introduction {
    margin-top: 14.6667vw;
  }
  .brief_introduction .bg_logo {
    width: 40vw;
    height: 45.3333vw;
  }
  .brief_introduction .bg_logo .stripe_logo {
    width: 53.3333vw;
    height: 48.5333vw;
  }
  .brief_introduction .introduction_row .row_left {
    width: 50vw;
  }
  .brief_introduction .introduction_row .row_left .main_sub_line {
    width: 18.6667vw;
    right: -5vw;
  }
  .brief_introduction .introduction_row .row_right {
    width: 50vw;
    margin-left: 0;
    padding-left: 10vw;
  }
}