.product-article {
  background-color: #f5f5f7;
  padding-bottom: 13.2rem;
  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;
}
/* 导航 */
.nav-content {
  margin-top: 10.1rem;
}
.content-title {
  font-size: 5.2rem;
  text-align: center;
}
.nav-container {
  padding: 0 40rem;
  margin-top: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-item {
  width: 5.2rem;
  font-size: 2.6rem;
  line-height: 4.6rem;
  color: #ACACAC;
  cursor: pointer;
  position: relative;
}
.item-active,
.nav-item:hover {
  color: var(--font-color-2);
}
.item-active:after {
  position: absolute;
  content: "";
  display: block;
  width: 100%;
  height: 0.4rem;
  background-color: var(--font-color-2);
  margin-top: 0.3rem;
}
/* 主要内容 */
.overflow-hidden {
  margin: 4.6rem 16rem 0 16rem;
  overflow: hidden;
}
.flex-row {
  display: flex;
  transform: translateX(0);
  transition: transform 0.5s ease-in-out;
}
.flex-item {
  flex: 0 0 100%;
}
.split-line {
  width: 100%;
  height: 1px;
  background-color: #EBEBEB;
  margin: 2.5rem 0;
  border: none;
}
.main-content {
  border-radius: 2.4rem;
  background-color: var(--white-primary);
  padding: 4.6rem 5rem 5.5rem 4.7rem;
}
.case-item {
  display: flex;
  align-items: flex-start;
}
.case-item .left-item {
  width: 30.9rem;
  height: 19.4rem;
  border-radius: 1.2rem;
  overflow: hidden;
}
.case-item .left-item > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.case-item .right-item {
  flex: 1;
  margin-left: 5rem;
  padding: 1.9rem 0;
}
.item-title {
  font-size: 2.6rem;
  line-height: 1;
  color: var(--font-color-2);
}
.flex-center {
  display: flex;
  align-items: center;
}
.case-item .right-item .flex-center {
  margin-top: 2.3rem;
  font-size: 1.4rem;
  line-height: 1.8rem;
}
.desc-dark {
  color: #333;
}
.desc-light {
  margin-left: 5.7rem;
  color: #8D8D8E;
}
.right-item .line-two {
  margin-top: 3.3rem;
  font-size: 1.6rem;
  line-height: 2.8rem;
  color: var(--font-color-3);
  /* 保持2行 */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

/* 分页 */
.page-content {
  margin-top: 5rem;
  display: flex;
  justify-content: center;
}
.page-dot-list {
  background-color: var(--white-primary);
  padding: 1rem 2rem;
  border-radius: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dot-item {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background-color: #595959;
  cursor: pointer;
}
.dot-item + .dot-item {
  margin-left: 2.88rem;
}
.dot-item:hover {
  background-color: #333;
}
.dot-item--active {
  width: 7.7rem;
  border-radius: 3rem;
}

@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;
  }
}

 /* 750px - 10 375 - 20 */
@media (max-width: 767px) {
  .product-banner {
    height: 200px;
  }
  .nav-container {
    margin-top: 1rem;
  }
  .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;
  }
  .nav-content {
    margin-top: 60px;
  }
  .content-title {
    font-size: 28px;
  }
  .nav-item {
    font-size: 14px;
    line-height: 23px;
    width: auto;
  }
  .item-active:after {
    margin-top: 6px;
    height: 2px;
  }
  .overflow-hidden {
    margin-top: 30px;
  }
  .main-content {
    padding: 20px;
    border-radius: 12px;
  }
  .case-item .left-item {
    width: 35%;
    height: auto;
    border-radius: 12px;
  }
  .case-item .right-item {
    margin-left: 25px;
    padding: 0;
  }
  .item-title {
    font-size: 16px;
    font-weight: normal;
  }
  .case-item .right-item .flex-center {
    margin-top: 12px;
    font-size: 13px;
    line-height: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  .desc-light {
    margin-left: 0;
    margin-top: 5px;
  }
  .right-item .line-two {
    display: none;
  }
  /* 分页 */
  .page-content {
    margin-top: 20px;
  }
  .page-dot-list {
    padding: 10px 20px;
  }
  .dot-item {
    width: 8px;
    height: 8px;
  }
  .dot-item--active {
    width: 30px;
    border-radius: 30px;
  }
  .dot-item + .dot-item {
    margin-left: 14px;
  }
  .product-article {
    padding-bottom: 30px;
  }
  .split-line {
    margin: 0.5rem 0;
  }
}