.quality-assurance .container {
  width: 1118px;
}
.quality-assurance .part0 {
  padding: 82px 0 50px;
  text-align: center;
}
.quality-assurance .part0 .h2 {
  margin-bottom: 16px;
  font-size: 30px; color: var(--primary-color);
  font-weight: 300; line-height: 38px;
}
.quality-assurance .part0 .h3 {
  margin: 0 auto;
  max-width: 310px;
  font-size: 12px; color: #97979B;
  line-height: 20px;
}
.quality-assurance .part0 img {
  max-width: 100%;
}
.quality-assurance .part0 .p {
  margin: 0 auto;
  max-width: 765px;
  font-size: 16px; line-height: 24px;
  color: #333;
}

.quality-assurance .part1,
.quality-assurance .part2{
  padding: 84px 0 70px;
  font-size: 18px; line-height: 26px;
  color: var(--primary-color);
  background-color: var(--background-color);
}
.quality-assurance .part1 .h3 {
  margin-bottom: 18px;
  font-size: 24px; line-height: 32px;
  color: var(--primary-color);
}
.quality-assurance .part2 {
  padding: 58px 0;
  background-color: #fff;
}
.quality-assurance .part2 .sm {
  font-size: 16px;
}
.quality-assurance .part3 ul {
  flex-wrap: wrap;
}
.quality-assurance .part3 ul li {
  position: relative;
  width: 25%;
}
.quality-assurance .part3 ul li img {
  position: relative;
  z-index: 0;
  width: 100%;
}
.quality-assurance .part3 ul li.full {
  width: 100%;
}
.quality-assurance .part3 ul li p {
  position: absolute;
  z-index: 1;
  left: 0; right: 0; bottom: 0;
  padding: 0 20px;
  line-height: 34px;
  font-size: 14px; color: #fff; font-weight: 600;
  text-align: right;
  background-color: rgba(45, 60, 101, 0.5);;
}

@media screen and (max-width: 768px) {
  .quality-assurance .container {
    max-width: 100%;
    padding-left: 50px;
    padding-right: 50px;
  }
  .quality-assurance .part0 {
    padding: 44px 0 40px;
    text-align: center;
  }
  .quality-assurance .part0 .h2 {
    margin-bottom: 16px;
    font-size: 36px;
    font-weight: 300; line-height: 46px;
  }
  .quality-assurance .part0 .h3 {
    max-width: 380px;
    width: 75%;
    font-size: 20px; 
    line-height: 24px;
  }
  .quality-assurance .part0 .p {
    margin: 0 auto;
    font-size: 22px; line-height: 24px;
    color: #333;
  }
  
  .quality-assurance .part1,
  .quality-assurance .part2{
    padding: 48px 0 45px;
    font-size: 20px; line-height: 24px;
  }
  .quality-assurance .part1 .h3,
  .quality-assurance .part2 .h3 {
    margin-bottom: 24px;
    font-size: 36px; line-height: 48px;
  }
  .quality-assurance .part2 {
    padding: 48px 0;
  }
  .quality-assurance .part2 .sm {
    font-size: 18px;
  }
  .quality-assurance .part3 ul {
  }
  .quality-assurance .part3 ul li {
    width: calc(100% - 100px);
    margin: 0 50px 24px
  }
  .quality-assurance .part3 ul li.full {
  }
  .quality-assurance .part3 ul li:last-child {
    margin: 0;
  }
  .quality-assurance .part3 ul li p {
    padding: 0 20px;
    line-height: 34px;
    font-size: 14px; 
  }
}


@media screen and (max-width: 440px) {
  .quality-assurance .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .quality-assurance .part0 {
    padding: 22px 0 20px;
    text-align: center;
  }
  .quality-assurance .part0 .h2 {
    margin-bottom: 8px;
    font-size: 18px;
    font-weight: 300; line-height: 24px;
  }
  .quality-assurance .part0 .h3 {
    max-width: 190px;
    font-size: 12px; 
    line-height: 20px;
  }
  .quality-assurance .part0 .p {
    font-size: 12px; line-height: 20px;
  }
  
  .quality-assurance .part1,
  .quality-assurance .part2{
    padding: 24px 0 20px;
    font-size: 12px; line-height: 20px;
  }
  .quality-assurance .part1 .h3,
  .quality-assurance .part2 .h3 {
    margin-bottom: 12px;
    font-size: 19px; line-height: 24px;
  }
  .quality-assurance .part2 {
    padding: 24px 0;
  }
  .quality-assurance .part2 .sm {
    font-size: 12px;
  }
  .quality-assurance .part3 ul {
  }
  .quality-assurance .part3 ul li {
    width: calc(100% - 40px);
    margin: 0 20px 12px
  }
  .quality-assurance .part3 ul li:last-child {
    margin: 0;
  }
  .quality-assurance .part3 ul li p {
    padding: 0 10px;
    line-height: 18px;
    font-size: 12px; 
  }
}