.header-placeholder {
  height: 0;
}

.adv>img {
  width: 100%;
}

.adv .adv-title {
  position: absolute;
  z-index: 1;
  top: 29vw;
  left: 5.6vw;
  right: 5.6vw;
  color: #fff;
}

.adv .adv-title .title {
  font-family: Source Han Sans CN;
  font-weight: 400;
  font-size: 6.5333vw;
  color: #ffffff;
}

.adv .adv-title .subtitle {
  margin-top: 3.2vw;
  font-weight: 200;
  font-size: 5.6vw;
  color: #ffffff;
}

.adv .props {
  position: absolute;
  left: 14.6667vw;
  top: 112vw;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 9vw 0;
}

.adv .props .name {
  font-family: SourceHanSansSC;
  font-weight: 200;
  font-size: 6.4vw;
  color: #FFFFFF;
}

.adv .props .desc {
  margin-top: 2vw;
  font-family: Microsoft YaHei;
  font-weight: 300;
  font-size: 3.4667vw;
  color: #FFFFFF;
}

.product {
  position: relative;
  overflow: hidden;
  background: #212224;
  padding-bottom: calc(10px + var(--footer-height));
}

.product .class-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product .list {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 32vw;
}

.product .swiper {
  width: 70.6667vw;
  height: 16vw;
  margin: 0;
  flex-shrink: 0;
}

.product .swiper .swiper-slide {
  position: relative;
  width: 16vw;
  height: 16vw;
}

.product .swiper .slide-img {
  width: 100%;
  height: 100%;
  background-color: #000;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.product .swiper-button-prev {
  flex-shrink: 0;
  width: 8vw;
  height: 8vw;
  margin: 0;
  position: relative;
  top: auto;
  transform: none;
  color: #fff;
  font-size: 3.2vw;
  border: 2px solid #fff;
  border-radius: 50%;
}

.product .swiper-button-next {
  flex-shrink: 0;
  width: 8vw;
  height: 8vw;
  margin: 0;
  position: relative;
  top: auto;
  transform: none;
  color: #fff;
  font-size: 3.2vw;
  border: 2px solid #fff;
  border-radius: 50%;
}

.product .swiper-button-prev::after,
.product .swiper-button-next::after {
  font-size: 3.2vw;
}