/* 页面作用域：.page-products */
.page-products {
  --page-gap: 2rem;
  --card-min-height: 280px;
  --feature-image-width: 260px;
  --feature-image-height: 520px;
  --border-gold: 1px solid var(--color-gold, #D4AF37);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.25);
  font-family: var(--font-body);
  color: var(--color-white);
  background-color: var(--color-black, #1A1A1A);
  position: relative;
  overflow: hidden;
  padding-bottom: var(--space-xl, 3rem);
}

/* 面包屑 */
.page-products__breadcrumb {
  padding: var(--space-md, 1rem) var(--space-lg, 2rem);
  font-size: 0.85rem;
  color: var(--color-gold, #D4AF37);
  letter-spacing: 0.05em;
}
.page-products__breadcrumb a {
  color: var(--color-gold, #D4AF37);
  text-decoration: underline solid transparent;
  transition: text-decoration-color var(--transition-fast, 0.2s ease);
}
.page-products__breadcrumb a:hover {
  text-decoration-color: currentColor;
}
.page-products__breadcrumb-sep {
  margin: 0 0.25rem;
  color: var(--color-gold, #D4AF37);
  opacity: 0.7;
}
.page-products__breadcrumb-current {
  color: var(--color-white);
  opacity: 0.8;
}

/* 页面标题 */
.page-products__page-title {
  font-size: clamp(2.2rem, 9vw, 4rem);
  font-weight: 200;
  line-height: 1.1;
  margin: 0 0 var(--space-sm, 0.5rem) var(--space-lg, 2rem);
  color: var(--color-primary, #E60012);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.page-products__page-subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-weight: 300;
  margin: 0 0 var(--space-xl, 3rem) var(--space-lg, 2rem);
  color: var(--color-white);
  opacity: 0.85;
  max-width: 680px;
}

/* 章节 */
.page-products__section {
  margin: 0 0 var(--space-xl, 3rem);
  padding: var(--space-lg, 2rem) var(--space-lg, 2rem);
  position: relative;
  z-index: 2;
}
.page-products__section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 200;
  color: var(--color-primary, #E60012);
  margin: 0 0 var(--space-lg, 2rem);
  display: flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
}
.page-products__section-number {
  font-size: 0.7em;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  letter-spacing: 0.1em;
  margin-right: var(--space-sm, 0.5rem);
}

/* 核心功能 网格 */
.page-products__feature-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg, 2rem);
}
.page-products__feature-card {
  position: relative;
  min-height: var(--card-min-height);
  background-color: var(--color-deep-teal, #0D3B4F);
  border: var(--border-gold);
  padding: var(--space-md, 1rem);
  perspective: 1000px;
  cursor: default;
  transition: box-shadow var(--transition-smooth, 0.35s ease);
}
.page-products__feature-card:hover {
  box-shadow: var(--shadow-card);
}
.page-products__card-inner {
  position: relative;
  width: 100%;
  transition: transform var(--transition-smooth, 0.35s ease);
  transform-style: preserve-3d;
}
.page-products__feature-card[data-hover="flip"]:hover .page-products__card-inner {
  transform: rotateY(180deg);
}
.page-products__card-front,
.page-products__card-back {
  backface-visibility: hidden;
  position: relative;
  width: 100%;
}
.page-products__card-back {
  position: absolute;
  top: 0;
  left: 0;
  transform: rotateY(180deg);
  padding: var(--space-md, 1rem);
  background-color: var(--color-wine, #7B241C);
  border: var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}
.page-products__card-back-text {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-white);
}
.page-products__card-icon {
  display: block;
  font-size: 2.5rem;
  margin-bottom: var(--space-sm, 0.5rem);
}
.page-products__card-number {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  display: block;
  margin-bottom: var(--space-xs, 0.25rem);
}
.page-products__card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 var(--space-sm, 0.5rem);
  color: var(--color-primary, #E60012);
}
.page-products__card-desc {
  font-size: 0.95rem;
  font-weight: 300;
  opacity: 0.9;
  margin: 0;
}
.page-products__feature-image-wrap {
  display: none;
}
.page-products__feature-image {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: var(--border-gold);
}

/* 数据对照区 */
.page-products__feature-compare {
  margin-top: var(--space-xl, 3rem);
  background-color: var(--color-black, #1A1A1A);
  border: var(--border-gold);
  padding: var(--space-lg, 2rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg, 2rem);
}
.page-products__compare-title {
  font-size: 1.8rem;
  font-weight: 200;
  color: var(--color-primary, #E60012);
  margin: 0 0 var(--space-sm, 0.5rem);
}
.page-products__compare-desc {
  font-size: 1rem;
  font-weight: 300;
  opacity: 0.85;
  max-width: 500px;
}
.page-products__compare-image-wrap {
  width: 100%;
}
.page-products__compare-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: var(--border-gold);
}

/* 下载区 */
.page-products__section--download {
  background-color: var(--color-deep-teal, #0D3B4F);
  border: var(--border-gold);
}
.page-products__download-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg, 2rem);
}
.page-products__download-image-wrap {
  width: 160px;
  flex-shrink: 0;
}
.page-products__download-image {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.page-products__download-info {
  text-align: center;
}
.page-products__download-desc {
  font-size: 1.1rem;
  font-weight: 300;
  margin: 0 0 var(--space-md, 1rem);
  max-width: 400px;
}
.page-products__qrcode-placeholder {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  background-color: var(--color-white);
  color: var(--color-black);
  padding: var(--space-md, 1rem);
  border: 3px solid var(--color-gold, #D4AF37);
  margin: 0 0 var(--space-md, 1rem);
}
.page-products__qrcode-icon {
  font-size: 2.5rem;
}
.page-products__qrcode-text {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}
.page-products__download-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md, 1rem);
  margin-top: var(--space-md, 1rem);
}
.page-products__download-btn,
.page-products__download-btn-outline {
  display: inline-block;
  padding: var(--space-sm, 0.5rem) var(--space-lg, 2rem);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all var(--transition-fast, 0.2s ease);
  border: 1px solid var(--color-gold, #D4AF37);
}
.page-products__download-btn {
  background-color: var(--color-primary, #E60012);
  color: var(--color-white);
  border: 1px solid var(--color-gold, #D4AF37);
}
.page-products__download-btn:hover {
  background: linear-gradient(135deg, var(--color-gold, #D4AF37), var(--color-primary, #E60012));
  color: var(--color-black);
  border-color: var(--color-primary, #E60012);
}
.page-products__download-btn-outline {
  background: transparent;
  color: var(--color-gold, #D4AF37);
}
.page-products__download-btn-outline:hover {
  background-color: var(--color-gold, #D4AF37);
  color: var(--color-black);
}

/* 版本说明 */
.page-products__section--version {
  background-color: var(--color-wine, #7B241C);
  border: var(--border-gold);
}
.page-products__version-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
}
.page-products__version-item {
  border: var(--border-gold);
  background-color: rgba(0,0,0,0.3);
}
.page-products__version-summary {
  display: block;
  padding: var(--space-md, 1rem);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  cursor: pointer;
  transition: background-color var(--transition-fast, 0.2s ease);
  list-style: none;
}
.page-products__version-summary::-webkit-details-marker {
  display: none;
}
.page-products__version-summary:hover {
  background-color: rgba(212,175,55,0.1);
}
.page-products__version-detail {
  padding: var(--space-md, 1rem);
  background-color: rgba(0,0,0,0.2);
  border-top: var(--border-gold);
}
.page-products__version-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-products__version-list li {
  padding: var(--space-xs, 0.25rem) 0;
  font-weight: 300;
  position: relative;
  padding-left: var(--space-md, 1rem);
}
.page-products__version-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-gold, #D4AF37);
}

/* 背景装饰 */
.page-products__bg-image {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.08;
}
.page-products__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 桌面端响应式 */
@media (min-width: 768px) {
  .page-products__feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg, 2rem);
    max-width: var(--max-width, 1200px);
    margin: 0 auto;
  }
  .page-products__feature-card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: 260px;
  }
  .page-products__feature-image-wrap {
    display: block;
    width: var(--feature-image-width);
    flex-shrink: 0;
  }
  .page-products__feature-image-wrap--left {
    order: -1;
    margin-right: var(--space-md, 1rem);
  }
  .page-products__feature-image-wrap--right {
    order: 1;
    margin-left: var(--space-md, 1rem);
  }
  .page-products__feature-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
  }
  .page-products__feature-compare {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width, 1200px);
    margin-left: auto;
    margin-right: auto;
  }
  .page-products__compare-image-wrap {
    max-width: 55%;
  }
  .page-products__download-content {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-xl, 3rem);
  }
  .page-products__download-image-wrap {
    width: 200px;
  }
  .page-products__download-info {
    text-align: left;
  }
  .page-products__download-links {
    justify-content: flex-start;
  }
  .page-products__section {
    max-width: var(--max-width, 1200px);
    margin-left: auto;
    margin-right: auto;
  }
  .page-products__page-title,
  .page-products__page-subtitle {
    margin-left: auto;
    margin-right: auto;
    max-width: var(--max-width, 1200px);
    padding: 0 var(--space-lg, 2rem);
  }
  .page-products__version-timeline {
    max-width: 600px;
  }
}
</style>
```
</details>
</section>