/* ===== 页面专属：应用中心 ===== */
.page-products {
  --card-shadow-layer: 0 2px 8px rgba(0,0,0,0.35), 0 8px 24px rgba(0,0,0,0.25), 0 0 0 1px var(--color-border);
  --card-shadow-hover: 0 4px 16px rgba(0,0,0,0.45), 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px var(--color-accent-yellow);
  --hero-deco-color: rgba(230, 57, 70, 0.12);
  position: relative;
}

/* ---------- Hero 区 ---------- */
.page-products .products-hero {
  position: relative;
  padding: 3rem 0 2.8rem;
  background: var(--color-bg-dark);
  overflow: hidden;
}
.page-products .products-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 28px,
    var(--hero-deco-color) 28px,
    var(--hero-deco-color) 29px
  );
  pointer-events: none;
}
.page-products .products-hero .container {
  position: relative;
  z-index: 1;
}
.page-products .breadcrumb {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.page-products .breadcrumb-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-speed);
}
.page-products .breadcrumb-link:hover,
.page-products .breadcrumb-link:focus-visible {
  color: var(--color-accent-yellow);
  outline: none;
}
.page-products .breadcrumb-sep {
  color: var(--color-border);
  user-select: none;
}
.page-products .breadcrumb-current {
  color: var(--color-accent-yellow);
  font-weight: 500;
}
.page-products .products-hero-title {
  font-family: var(--font-headings);
  font-size: var(--font-size-4xl);
  line-height: 0.95;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
  margin: 0 0 0.6rem;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
}
.page-products .products-hero-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 2.4rem;
  height: 4px;
  background: var(--color-primary-red);
  border-radius: 2px;
}
.page-products .products-hero-desc {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  max-width: 68ch;
  margin: 1.2rem 0 0;
  line-height: 1.6;
}
.page-products .hero-divider {
  margin-top: 2rem;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-red), transparent 70%);
  opacity: 0.35;
}

/* ---------- 快速索引 ---------- */
.page-products .products-index {
  padding: 2.8rem 0 2rem;
  background: var(--color-surface-dark);
  border-bottom: 1px solid var(--color-border);
}
.page-products .products-index .section-title {
  font-family: var(--font-headings);
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.page-products .products-index .section-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 1.6em;
  background: var(--color-primary-red);
  border-radius: 3px;
  flex-shrink: 0;
}
.page-products .index-intro {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 1.2rem;
  max-width: 60ch;
}
.page-products .index-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-products .index-tag {
  display: inline-block;
  padding: 0.45rem 1.2rem;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-primary-blue);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  transition: background var(--transition-speed), border-color var(--transition-speed), color var(--transition-speed), transform var(--transition-speed);
  cursor: pointer;
}
.page-products .index-tag:hover,
.page-products .index-tag:focus-visible {
  background: var(--color-primary-red);
  border-color: var(--color-primary-red);
  color: #fff;
  transform: translateY(-2px);
  outline: none;
}
.page-products .index-tag:active {
  transform: translateY(0);
}

/* ---------- 数据服务全览 ---------- */
.page-products .products-services {
  padding: 3rem 0 4rem;
  background: var(--color-bg-dark);
}
.page-products .products-services .section-title {
  font-family: var(--font-headings);
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.page-products .products-services .section-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 1.6em;
  background: var(--color-accent-yellow);
  border-radius: 3px;
  flex-shrink: 0;
}
.page-products .services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

/* ---------- 服务卡片 ---------- */
.page-products .service-card {
  background: var(--color-surface-dark);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem 1.5rem 1.5rem;
  box-shadow: var(--card-shadow-layer);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  display: flex;
  flex-direction: column;
  position: relative;
  border: 1px solid transparent;
}
.page-products .service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--color-accent-yellow);
}
.page-products .service-card:focus-within {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--color-accent-yellow);
}
.page-products .card-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 1.2rem;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: rgba(29, 53, 87, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.page-products .card-img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}
.page-products .card-title {
  font-family: var(--font-headings);
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  line-height: 1.2;
}
.page-products .card-summary {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0 0 1rem;
  flex: 1 1 auto;
}

/* ---------- 卡片 details 折叠 ---------- */
.page-products .card-details {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
}
.page-products .detail-summary {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent-yellow);
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-speed);
  user-select: none;
}
.page-products .detail-summary::-webkit-details-marker {
  display: none;
}
.page-products .detail-summary::before {
  content: '+';
  font-size: 1.1em;
  font-weight: 700;
  color: var(--color-accent-yellow);
  transition: transform var(--transition-speed);
}
.page-products .card-details[open] .detail-summary::before {
  content: '−';
  transform: rotate(0deg);
}
.page-products .detail-summary:hover,
.page-products .detail-summary:focus-visible {
  color: var(--color-primary-red);
  outline: none;
}
.page-products .detail-summary:hover::before,
.page-products .detail-summary:focus-visible::before {
  color: var(--color-primary-red);
}
.page-products .detail-content {
  padding: 0.75rem 0 0.25rem;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.page-products .detail-content p {
  margin: 0 0 0.4rem;
}
.page-products .detail-content p:last-child {
  margin-bottom: 0;
}

/* ---------- 底部背景图 ---------- */
.page-products .products-backdrop {
  padding: 2rem 0 3rem;
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
}
.page-products .backdrop-inner {
  position: relative;
  text-align: center;
}
.page-products .backdrop-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  margin: 0 auto;
  opacity: 0.7;
  object-fit: cover;
}
.page-products .backdrop-text {
  position: absolute;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-headings);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: rgba(13, 17, 23, 0.7);
  padding: 0.3rem 1.6rem;
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  pointer-events: none;
}

/* ===== 移动端优先 + 桌面增强 ===== */
@media (min-width: 48em) {
  .page-products .products-hero {
    padding: 4rem 0 3.2rem;
  }
  .page-products .products-hero-title {
    font-size: calc(var(--font-size-4xl) * 1.3);
  }
  .page-products .products-hero-title::after {
    width: 3.6rem;
    height: 5px;
  }
  .page-products .products-hero-desc {
    font-size: var(--font-size-lg);
  }
  .page-products .products-index {
    padding: 3.2rem 0 2.4rem;
  }
  .page-products .products-index .section-title {
    font-size: var(--font-size-3xl);
  }
  .page-products .index-tags {
    gap: 1rem;
  }
  .page-products .index-tag {
    padding: 0.55rem 1.6rem;
    font-size: var(--font-size-md);
  }
  .page-products .products-services {
    padding: 4rem 0 5rem;
  }
  .page-products .products-services .section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: 2.5rem;
  }
  .page-products .services-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-products .service-card {
    padding: 2rem 1.75rem 1.75rem;
  }
  .page-products .card-title {
    font-size: var(--font-size-2xl);
  }
  .page-products .card-summary {
    font-size: var(--font-size-md);
  }
  .page-products .products-backdrop {
    padding: 3rem 0 4rem;
  }
  .page-products .backdrop-text {
    font-size: var(--font-size-xl);
    bottom: 1.6rem;
    padding: 0.4rem 2.4rem;
  }
}

@media (min-width: 75em) {
  .page-products .products-hero {
    padding: 5rem 0 3.6rem;
  }
  .page-products .products-hero-title {
    font-size: calc(var(--font-size-4xl) * 1.6);
  }
  .page-products .services-grid {
    gap: 2.5rem;
  }
  .page-products .service-card {
    padding: 2.4rem 2rem 2rem;
  }
}

/* 窄屏保护 */
@media (max-width: 30em) {
  .page-products .products-hero-title {
    font-size: 1.8rem;
    word-break: break-word;
  }
  .page-products .service-card {
    padding: 1.25rem 1rem 1.25rem;
  }
  .page-products .card-icon {
    width: 64px;
    height: 64px;
  }
  .page-products .card-icon img {
    width: 64px;
    height: 64px;
  }
  .page-products .backdrop-text {
    font-size: var(--font-size-sm);
    padding: 0.2rem 1rem;
    white-space: normal;
  }
}