.page-products {
  --card-bg-start: #0a192f;
  --card-bg-end: #1b3a4b;
  --card-border: rgba(57,255,20,0.2);
  --card-radius: 4px;
  --card-shadow: 0 4px 20px rgba(0,0,0,0.5);
  --flip-duration: 0.6s;

  padding: 2rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* 面包屑 */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-helper);
  margin-bottom: 1rem;
}
.page-products .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-products .breadcrumb a:hover {
  text-decoration: underline;
}
.page-products .breadcrumb-sep {
  color: var(--color-border);
}

/* 标题与描述 */
.page-products .page-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2rem;
  color: var(--color-text-white);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.page-products .page-desc {
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 2rem;
  max-width: 600px;
}

/* 产品网格（卡片容器） */
.page-products .product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

/* 单个产品卡片（翻转容器） */
.page-products .product-card {
  perspective: 1000px;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}
.page-products .card-inner {
  position: relative;
  width: 100%;
  height: 320px;
  transition: transform var(--flip-duration) ease;
  transform-style: preserve-3d;
  cursor: default;
}
/* 悬停/焦点翻转 */
.page-products .product-card:hover .card-inner,
.page-products .product-card:focus-within .card-inner {
  transform: rotateY(180deg);
}

/* 前后面共用 */
.page-products .card-front,
.page-products .card-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--card-radius);
  background: linear-gradient(135deg, var(--card-bg-start), var(--card-bg-end));
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
}

/* 前面板：斜线背景装饰 */
.page-products .card-front::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 20px,
    rgba(57,255,20,0.03) 20px,
    rgba(57,255,20,0.03) 40px
  );
  pointer-events: none;
}
.page-products .card-front {
  z-index: 2;
}
.page-products .card-back {
  transform: rotateY(180deg);
  z-index: 1;
}

/* 卡片图标 */
.page-products .card-icon {
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: inline-flex;
}
.page-products .card-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--color-text-white);
  margin: 0 0 0.5rem;
}
.page-products .card-summary {
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* 背面内容 */
.page-products .card-back p {
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0 0 1rem;
}
.page-products .card-img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  margin-bottom: 0.5rem;
}
.page-products .card-link {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  transition: background 0.2s;
}
.page-products .card-link:hover {
  background: rgba(57,255,20,0.1);
}

/* 使用指南区块 */
.page-products .guide-section {
  margin-bottom: 3rem;
}
.page-products .section-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-text-white);
  margin: 0 0 1.5rem;
}
.page-products .guide-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.page-products .step {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--color-bg-secondary);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}
.page-products .step-num {
  color: var(--color-gold);
  font-size: 1.2rem;
  font-weight: 700;
  white-space: nowrap;
}
.page-products .step-desc {
  color: var(--color-text);
  font-size: 0.95rem;
  margin: 0;
}
.page-products .guide-figure {
  margin: 1.5rem 0;
}
.page-products .guide-figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.page-products .guide-cta {
  color: var(--color-text);
  font-size: 0.95rem;
}
.page-products .guide-cta a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-products .guide-cta a:hover {
  text-decoration: underline;
}

/* 背景装饰纹理 */
.page-products .bg-texture {
  margin-top: 2rem;
  overflow: hidden;
  border-radius: var(--radius-sm);
  opacity: 0.3;
  pointer-events: none;
}
.page-products .bg-texture img {
  width: 100%;
  height: auto;
  display: block;
}

/* 移动端适应 */
@media (max-width: 767px) {
  .page-products {
    padding: 1.5rem 0.75rem;
  }
  .page-products .page-title {
    font-size: 1.5rem;
  }
  .page-products .product-card {
    max-width: 100%;
  }
  .page-products .card-inner {
    height: 280px;
  }
  .page-products .card-front,
  .page-products .card-back {
    padding: 1rem;
  }
  .page-products .card-title {
    font-size: 1.2rem;
  }
  .page-products .guide-steps {
    gap: 0.75rem;
  }
  .page-products .step {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .page-products .bg-texture {
    display: none;
  }
}
@media (min-width: 768px) {
  .page-products .product-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-products .guide-steps {
    flex-direction: row;
    gap: 1.5rem;
  }
  .page-products .step {
    flex: 1;
  }
}

/* 总体渐进：无JS时翻转仍然通过hover/focus生效 */