.quality_info {
  margin: 7.7rem auto 6rem;
  text-align: center;
  font-size: 2rem;
  color: #020202;
  line-height: 4rem;
}
@media only screen and (max-width: 1024px) {
  .quality_info {
    margin: 5rem auto;
  }
}

.scroll_top_box {
  height: 12.4rem;
  background: #FFFFFF;
  box-shadow: 0rem 0.7rem 1.8rem 0rem rgba(0, 0, 0, 0.03);
  position: sticky;
  top: 0;
  transition: all 0.6s;
  z-index: 99;
}
.scroll_top_box.show {
  top: 10rem;
}
.scroll_top_box .scroll_box_content {
  height: 100%;
  display: flex;
  position: relative;
}
.scroll_top_box .scroll_box_content ul {
  display: flex;
  align-items: flex-end;
  padding-bottom: 5.3rem;
  justify-content: space-between;
  width: 100%;
}
.scroll_top_box .scroll_box_content ul li {
  width: 0.3rem;
  height: 1.7rem;
  background: #DADADC;
  transition: all 0.6s;
}
.scroll_top_box .scroll_box_content ul li:nth-of-type(6n) {
  height: 2.7rem;
}
.scroll_top_box .scroll_box_content ul li:nth-of-type(18n) {
  position: relative;
}
.scroll_top_box .scroll_box_content ul li:nth-of-type(18n)::after {
  content: "";
  position: absolute;
  bottom: -3.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1.6rem;
  height: 1.6rem;
  box-shadow: 0.2rem 0.3rem 0.3rem 0rem rgba(0, 24, 69, 0.1);
  background-color: var(--color, #FFFFFF);
  border-radius: 0.6rem;
  transition: all 0.6s;
}
@media only screen and (max-width: 1024px) {
  .scroll_top_box {
    padding: 0 6.6rem;
    box-sizing: border-box;
  }
  .scroll_top_box.show {
    top: 13rem;
  }
}
@media only screen and (max-width: 768px) {
  .scroll_top_box {
    padding: 0 3.3rem;
    box-sizing: border-box;
  }
}

.quality_list {
  margin-top: 8.3rem;
  margin-bottom: 11.5rem;
}
.quality_list.en ul li:nth-last-of-type(-n+3) .tit {
  height: 16rem;
}
.quality_list ul {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.quality_list ul li {
  width: 31.798%;
}
.quality_list ul li:not(:nth-of-type(-n+3)) {
  margin-top: 8.3rem;
}
.quality_list ul li .tit {
  height: 12rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-left: 4.3rem;
  position: relative;
}
.quality_list ul li .tit::before {
  content: "";
  position: absolute;
  left: 1.7rem;
  top: 0.3rem;
  width: 0.4rem;
  height: 115%;
  background: #0056B8;
  border-radius: 0.2rem;
  z-index: 9;
}
.quality_list ul li .tit span {
  font-size: 2.2rem;
  color: #1F1F20;
  font-weight: 700;
  transition: all 0.6s;
  text-transform: uppercase;
}
.quality_list ul li .tit .key {
  margin-bottom: 2rem;
}
.quality_list ul li .tit .key.three {
  margin-bottom: 1rem;
}
.quality_list ul li .tit .key p {
  font-size: 1.6rem;
  color: #919194;
  line-height: 2.3rem;
}
.quality_list ul li .img {
  border-radius: 1rem;
  overflow: hidden;
}
.quality_list ul li .img img {
  width: 100%;
  transition: all 0.6s;
}
.quality_list ul li:hover .tit span {
  color: #0056B8;
}
.quality_list ul li:hover .img img {
  transform: scale(1.1);
}
@media only screen and (max-width: 1024px) {
  .quality_list {
    padding: 0 6.6rem;
    box-sizing: border-box;
  }
  .quality_list.en ul li:nth-last-of-type(-n+4) .tit {
    height: 16rem;
  }
  .quality_list ul li {
    width: 48%;
  }
  .quality_list ul li:not(:nth-of-type(-n+2)) {
    margin-top: 8.3rem;
  }
}
@media only screen and (max-width: 768px) {
  .quality_list {
    padding: 0 3.3rem;
    box-sizing: border-box;
  }
  .quality_list ul li {
    width: 100%;
  }
  .quality_list ul li:not(:first-of-type) {
    margin-top: 8.3rem;
  }
}