/* ===== 页面专属：服务项目 ===== */
.page-products {
  --page-gap: 2.5rem;
  --card-perspective: 1000px;
  --card-rotate-speed: 0.6s;
  --card-border-red: 2px solid var(--color-red, #E63946);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  background-color: var(--color-dark, #121212);
  color: var(--color-cream, #F1FAEE);
}

/* ---- 面包屑 ---- */
.page-products .breadcrumb {
  padding: 1rem 1.25rem 0;
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--color-gold, #F4A261);
}
.page-products .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}
.page-products .breadcrumb a {
  color: var(--color-cream, #F1FAEE);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus {
  color: var(--color-red, #E63946);
  text-decoration: underline;
}
.page-products .breadcrumb [aria-current="page"] {
  color: var(--color-gold, #F4A261);
  font-weight: 600;
}

/* ---- Hero 区 ---- */
.page-products__hero {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem 1.25rem 3rem;
  overflow: hidden;
}
.page-products__hero-text {
  z-index: 2;
}
.page-products__hero-title {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-heading, 900);
  font-size: clamp(2.4rem, 10vw, 4.8rem);
  line-height: 1;
  color: var(--color-cream, #F1FAEE);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-cream, #F1FAEE) 40%, var(--color-red, #E63946) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-products__hero-desc {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-body, 400);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-cream, #F1FAEE);
  max-width: 36em;
  margin: 0;
}
.page-products__hero-visual {
  z-index: 1;
  border-radius: var(--radius-md, 16px);
  overflow: hidden;
  box-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.25));
  border: var(--card-border-red);
}
.page-products__hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1200 / 600;
}
.page-products__hero-slash {
  position: absolute;
  top: -10%;
  right: -15%;
  width: 50%;
  height: 120%;
  background: var(--color-red-gradient, linear-gradient(135deg, #E63946, #b81f2d));
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}

/* ---- 服务卡片网格 ---- */
.page-products__services {
  padding: 0 1.25rem 3rem;
}
.page-products__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* ---- 卡片通用 ---- */
.service-card {
  perspective: var(--card-perspective, 1000px);
  cursor: pointer;
  outline: none;
  border-radius: var(--radius-md, 16px);
}
.service-card:focus-visible {
  outline: 3px solid var(--color-gold, #F4A261);
  outline-offset: 4px;
}
.service-card__inner {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  transition: transform var(--card-rotate-speed, 0.6s) cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
  border-radius: var(--radius-md, 16px);
  box-shadow: var(--card-shadow);
}
.service-card:hover .service-card__inner,
.service-card:focus-within .service-card__inner {
  transform: rotateY(180deg);
}
.service-card__front,
.service-card__back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md, 16px);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  padding: 1.25rem;
  text-align: center;
  border: var(--card-border-red);
  overflow: hidden;
}
.service-card__front {
  background: var(--color-blue, #1D3557);
  z-index: 2;
}
.service-card__back {
  background: var(--color-brown, #2B2D42);
  transform: rotateY(180deg);
  z-index: 1;
  justify-content: flex-start;
  padding-top: 1.75rem;
  gap: 0.75rem;
}
.service-card__icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: 0.75rem;
  filter: drop-shadow(0 2px 8px rgba(230, 57, 70, 0.3));
  border-radius: var(--radius-sm, 8px);
}
.service-card__title {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-heading, 900);
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--color-cream, #F1FAEE);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.service-card__hint {
  font-size: 0.75rem;
  color: var(--color-gold, #F4A261);
  margin-top: 0.5rem;
  opacity: 0.7;
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: 400;
}
.service-card__back-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  z-index: 0;
  border-radius: var(--radius-md, 16px);
  pointer-events: none;
}
.service-card__desc {
  position: relative;
  z-index: 1;
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-body, 400);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-cream, #F1FAEE);
  margin: 0;
  max-width: 22em;
}
.service-card__link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-gold, #F4A261);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
  margin-top: 0.25rem;
}
.service-card__link:hover,
.service-card__link:focus {
  color: var(--color-red, #E63946);
  border-bottom-color: var(--color-red, #E63946);
}

/* ---- 了解更多区 ---- */
.page-products__connect {
  padding: 2.5rem 1.25rem 3.5rem;
  background: var(--color-blue, #1D3557);
  border-top: 3px solid var(--color-red, #E63946);
  text-align: center;
}
.page-products__connect-title {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-heading, 900);
  font-size: 1.8rem;
  line-height: 1.2;
  color: var(--color-cream, #F1FAEE);
  margin: 0 0 0.5rem;
  text-transform: uppercase;
}
.page-products__connect-desc {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: var(--font-weight-body, 400);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-cream, #F1FAEE);
  max-width: 32em;
  margin: 0 auto 1.5rem;
}
.page-products__connect-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.5rem;
}
.page-products__connect-link {
  font-family: var(--font-primary, 'Work Sans', sans-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-gold, #F4A261);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.page-products__connect-link:hover,
.page-products__connect-link:focus {
  color: var(--color-red, #E63946);
  border-bottom-color: var(--color-red, #E63946);
}

/* ---- 桌面端媒体查询 ≥ 768px ---- */
@media (min-width: 768px) {
  .page-products .breadcrumb {
    padding: 1.5rem 2.5rem 0;
  }
  .page-products__hero {
    flex-direction: row;
    align-items: center;
    padding: 3rem 2.5rem 4rem;
    gap: 2.5rem;
  }
  .page-products__hero-text {
    flex: 0 0 48%;
  }
  .page-products__hero-title {
    font-size: clamp(3rem, 5vw, 5.2rem);
  }
  .page-products__hero-desc {
    font-size: 1.15rem;
  }
  .page-products__hero-visual {
    flex: 0 0 46%;
  }
  .page-products__hero-slash {
    width: 40%;
    right: -8%;
    opacity: 0.1;
  }
  .page-products__services {
    padding: 0 2.5rem 4rem;
  }
  .page-products__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .service-card__inner {
    aspect-ratio: 4 / 3;
  }
  .service-card__title {
    font-size: 1.5rem;
  }
  .service-card__desc {
    font-size: 1rem;
  }
  .page-products__connect {
    padding: 3rem 2.5rem 4rem;
  }
  .page-products__connect-title {
    font-size: 2.2rem;
  }
  .page-products__connect-links {
    gap: 1rem 2.5rem;
  }
}

/* ---- 大桌面端 ≥ 1200px ---- */
@media (min-width: 1200px) {
  .page-products__hero {
    padding: 4rem 3.5rem 5rem;
    gap: 3.5rem;
  }
  .page-products__hero-title {
    font-size: 5.6rem;
  }
  .page-products__services {
    padding: 0 3.5rem 5rem;
  }
  .page-products__grid {
    gap: 3rem;
  }
  .page-products__connect {
    padding: 4rem 3.5rem 5rem;
  }
}

/* ---- 辅助类 ---- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}