/* 从产品原型提取的首屏样式，仅作用于 product_hero。 */
.product_hero {
  --pd-line: #eaeaea;
  --pd-body: #353535;
  --pd-muted: #666;
  --pd-dark: #0a0a0a;
  padding: 2.6rem 0 0;
}
.product_hero > .content > .flex { align-items: flex-start; gap: 14rem; }
.product_hero .pd_tag {
  display: inline-block;
  background-color: var(--primary);
  color: #111;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.05rem;
  text-transform: uppercase;
  padding: 0.5rem 1.2rem 0.3rem;
  line-height: 1.6rem;
}
.product_hero .product_gallery { width: 69.2rem; flex: none; min-width: 0; }
.product_hero .gallery_main {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid #cfd3d6;
  background-color: #f2f4f6;
}
.product_hero .gallery_main .img { --h: 79.57%; }
.product_hero .gallery_main .swiper-slide { height: auto; }
.product_hero .gallery_thumbs { margin-top: 2.6rem; display: flex; align-items: center; gap: 1.4rem; }
.product_hero .gallery_thumbs .swiper { overflow: hidden; flex: 1; min-width: 0; }
.product_hero .gallery_thumbs .swiper-slide { width: 11.6rem; cursor: pointer; }
.product_hero .gallery_thumbs .img {
  --h: 72.4%;
  border-radius: 0.6rem;
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color 0.3s;
}
.product_hero .gallery_thumbs .swiper-slide-thumb-active .img { border-color: var(--primary); }
.product_hero .gallery_nav {
  width: 3.2rem;
  height: 3.2rem;
  flex: none;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: #111;
}
.product_hero .gallery_nav:hover { background-color: var(--primary); }
.product_hero .gallery_nav svg { width: 1.4rem; height: 1.4rem; }
.product_hero .gallery_nav.swiper-button-disabled { opacity: 0.3; pointer-events: none; }
.product_hero .product_summary { flex: 1; min-width: 0; padding-top: 0.6rem; }
.product_hero .product_summary h1 { font-size: 4.8rem; line-height: 5.6rem; font-weight: 700; color: var(--pd-dark); margin-top: 2.4rem; }
.product_hero .lead { font-size: 1.8rem; line-height: 2.8rem; color: var(--pd-body); margin-top: 3rem; }
.product_hero .lead + .lead { margin-top: 1.4rem; }
.product_hero .features { display: flex; flex-wrap: wrap; gap: 1rem 3.2rem; margin-top: 4rem; }
.product_hero .features li { display: flex; align-items: center; gap: 1rem; font-size: 1.5rem; font-weight: 500; color: #111; }
.product_hero .features svg { width: 2rem; height: 2rem; flex: none; }
.product_hero .spec_list { margin-top: 3.2rem; border-top: 1px solid var(--pd-line); }
.product_hero .spec_list li { display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 4.6rem; padding: 0.6rem 0; border-bottom: 1px solid var(--pd-line); }
.product_hero .spec_list .label { font-size: 1.6rem; color: var(--pd-muted); }
.product_hero .spec_list .value { font-size: 1.7rem; font-weight: 600; color: var(--pd-dark); text-align: right; }
.product_hero .product_summary .btns { display: flex; flex-wrap: wrap; gap: 2.8rem; margin-top: 3rem; }
.product_hero .product_summary .btns .btn { line-height: 5.6rem; padding: 0 2.6rem; }
@media screen and (min-width: 769px) and (max-width: 1220px) {
  .product_hero > .content > .flex { gap: 6rem; }
  .product_hero .product_gallery { width: 52rem; }
}
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .product_hero .product_summary h1 { font-size: 4rem; line-height: 4.8rem; }
}
@media screen and (max-width: 768px) {
  .product_hero { padding-top: 16px; }
  .product_hero > .content > .flex { display: block; }
  .product_hero .product_gallery { width: 100%; }
  .product_hero .gallery_thumbs { margin-top: 12px; gap: 8px; }
  .product_hero .gallery_thumbs .swiper-slide { width: 72px; }
  .product_hero .gallery_nav { width: 24px; height: 24px; }
  .product_hero .product_summary { padding-top: 24px; }
  .product_hero .product_summary h1 { font-size: 25px; line-height: 1.3; margin-top: 12px; }
  .product_hero .lead { font-size: 14px; line-height: 22px; margin-top: 14px; }
  .product_hero .features { gap: 8px 16px; margin-top: 18px; }
  .product_hero .features li { font-size: 13px; }
  .product_hero .features svg { width: 16px; height: 16px; }
  .product_hero .spec_list { margin-top: 18px; }
  .product_hero .spec_list li { min-height: 0; padding: 12px 0; }
  .product_hero .spec_list .label { font-size: 13px; }
  .product_hero .spec_list .value { font-size: 14px; }
  .product_hero .product_summary .btns { gap: 12px; margin-top: 20px; }
  .product_hero .product_summary .btns .btn { line-height: 40px; padding: 0 18px; font-size: 13px; }
}