.w {
  width: 1324px;
  margin: 0 auto;
}
.mask {
  width: 100%;
  height: 100%;
  opacity: 0.5;
  background-color: #333;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 105;
}
@media screen and (max-width: 1324px) {
  .w {
    width: 90%;
  }
}
@media screen and (min-width: 2400px) {
  .w {
    width: 80%;
  }
}
@media screen and (max-width: 750px) {
  .w {
    width: auto;
  }
}
.about_us_page .about_us_cont {
  padding-top: 2.6042vw;
}
.about_us_page .about_us_cont .list_cont_max_title {
  font-size: 0.8333vw;
  font-weight: 500;
  color: #a8a8a8;
}
.about_us_page .about_us_cont .list_cont_max_title .current {
  padding-bottom: 0.2604vw;
  color: #323232;
  border-bottom: 1px solid #323232;
}
.about_us_page .about_us_cont .about_us_dec {
  margin-top: 1.5104vw;
  display: flex;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_slider > div {
  width: 15.4167vw;
  padding-left: 2.5521vw;
  padding-bottom: 2.3958vw;
  background: #ffffff;
  border-radius: 2.6042vw;
  box-shadow: 0 0.625vw 4.6875vw 0 rgba(0, 0, 0, 0.1);
  position: relative;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_slider > div > div {
  cursor: pointer;
  position: relative;
  z-index: 2;
  margin-top: 2.6042vw;
  font-size: 0.9896vw;
  font-weight: 500;
  color: #a8a8a8;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_slider > div > div:first-child {
  padding-top: 2.6042vw;
  margin-top: 0;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_slider > div > div.active {
  color: #fff;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_slider > div .bg {
  position: absolute;
  box-sizing: content-box;
  padding: 0 0.9896vw;
  z-index: 1;
  top: -0.5208vw;
  left: 1.5625vw;
  width: 2.7083vw;
  height: 2.4479vw;
  background: #78c750;
  border-radius: 0.625vw;
  transition: top 300ms cubic-bezier(0.66, -0.83, 0.45, 1.8);
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_text {
  position: relative;
  flex: 1;
  margin-left: 3.5417vw;
  overflow: hidden;
}
.about_us_page .about_us_cont .about_us_dec .about_us_dec_text .about_us_dec_text_box {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: top 300ms cubic-bezier(0.66, -0.83, 0.45, 1.8);
}


a {
  text-decoration: none;
}