.product-article {
  background-color: #f5f5f7;
  padding-bottom: 10rem;
  font-family: "SourceHanSansCN-Medium";
  --font-color-white: var(--white-primary);
  --font-color-1: #A6A5ABF2;
  --font-color-2: #1D1D1FF2;
  --font-color-3: #86868B;
}
.product-banner {
  width: 100%;
  height: 56.4rem;
  position: relative;
}
.product-banner > img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
/* 标题 */
.product-banner .title-group {
  position: relative;
  top: 17.3rem;
  left: 23.6rem;
}
.title-group .sub-title {
  font-size: 4.8rem;
  line-height: 7rem;
  color: var(--font-color-1);
}
.title-group .main-title {
  font-size: 6rem;
  line-height: 8.7rem;
  margin-top: 1rem;
  color: var(--font-color-white);
  font-weight: normal;
}
.title-group .title-desc {
  font-size: 2.4rem;
  line-height: 2.8rem;
  color: var(--font-color-1);
  margin-top: 2.2rem;
}

@media (max-width: 1280px) {
  .product-banner > img {
    object-position: right;
  }
  .overflow-hidden {
    margin: 4.6rem 25px 0 25px;
  }
  .nav-container {
    padding: 0 10%;
  }
  .product-article {
    padding-bottom: 5rem;
  }
}

@media (max-width: 767px) {
  .product-article {
    padding-bottom: 40px;
  }
  .product-banner {
    height: 200px;
  }
  .product-banner .title-group {
    top: 60px;
    left: 25px;
  }
  .title-group .sub-title {
    font-size: 24px;
    line-height: 35px;
  }
  .title-group .main-title {
    margin-top: 0;
    font-size: 30px;
    line-height: 43px;
  }
  .title-group .title-desc {
    margin-top: 0;
    font-size: 12px;
    line-height: 14px;
  }
}