/* 页面专属样式 - 产品介绍 */
.page-products {
  --page-gap: 2rem;
  --card-radius: var(--radius-lg);
  --card-bg: var(--clr-surface-dark);
  --card-border: var(--clr-border-subtle);
  --card-header-bg: var(--clr-primary-deep-blue);
  --card-header-gradient: linear-gradient(135deg, var(--clr-primary-deep-blue) 0%, var(--clr-surface-medium) 100%);
  --feature-list-marker: var(--clr-accent-orange-red);
  --platform-bg: var(--clr-surface-medium);
  --guide-step-bg: var(--clr-surface-dark);
}

/* 移动端优先布局 */
.page-products {
  padding: 1rem 1rem 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  color: var(--clr-text-primary);
}

/* 面包屑 */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  margin-bottom: 1.5rem;
}

.page-products .breadcrumb__link {
  color: var(--clr-text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.page-products .breadcrumb__link:hover,
.page-products .breadcrumb__link:focus {
  color: var(--clr-accent-orange-red);
}

.page-products .breadcrumb__sep {
  user-select: none;
}

.page-products .breadcrumb__current {
  color: var(--clr-accent-gold);
}

/* 顶部英雄区 */
.page-products__hero {
  position: relative;
  margin-bottom: 3rem;
}

.page-products__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 0.25rem;
  color: var(--clr-text-primary);
}

.page-products__subtitle {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  margin: 0 0 1rem;
  letter-spacing: 0.05em;
}

.page-products__hero-image {
  margin: 1.5rem -1rem 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.page-products__hero-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 300px;
}

/* 区块标题（共享类已定义，此处补充） */
.page-products .section-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--clr-text-primary);
  margin: 0 0 1.5rem;
  position: relative;
  padding-left: 1rem;
  border-left: 4px solid var(--clr-accent-orange-red);
}

/* 核心功能卡片网格 */
.page-products__card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* 卡片：使用 details 实现原生展开 */
.page-products__card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  border: 1px solid var(--card-border);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-products__card[open] {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  border-color: var(--clr-accent-orange-red);
}

.page-products__card-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  cursor: pointer;
  background: var(--card-header-gradient);
  list-style: none; /* 移除 details 默认 marker */
}

.page-products__card-header::-webkit-details-marker {
  display: none;
}

.page-products__card-image {
  width: 100%;
  max-width: 200px;
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
}

.page-products__card-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 280 / 500;
}

.page-products__card-info {
  text-align: center;
}

.page-products__card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin: 0 0 0.25rem;
  color: var(--clr-text-primary);
}

.page-products__card-prompt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-accent-gold);
  letter-spacing: 0.1em;
}

/* 展开内容 */
.page-products__card-body {
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--card-border);
}

.page-products__card-body p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--clr-text-secondary);
  margin: 0 0 1rem;
}

.page-products__feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-products__feature-list li {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--clr-text-primary);
  padding-left: 1.5rem;
  position: relative;
}

.page-products__feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 0.625rem;
  height: 0.625rem;
  background: var(--feature-list-marker);
  border-radius: 2px;
  transform: skewX(-10deg);
}

.page-products__card-body .btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  background: var(--clr-accent-orange-red);
  color: var(--clr-text-primary);
  text-decoration: none;
  transition: background var(--transition-base);
  cursor: pointer;
}

.page-products__card-body .btn:hover,
.page-products__card-body .btn:focus {
  background: #e03d1f;
}

/* 对比图占位 */
.page-products__chart-placeholder {
  margin: 1rem 0;
  border-radius: 8px;
  overflow: hidden;
}

.page-products__chart-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 400 / 300;
}

/* 平台特色板块 */
.page-products__section--dark {
  background: var(--platform-bg);
  border-radius: var(--radius-lg);
  padding: 2rem 1rem;
  margin: 2rem 0;
}

.page-products__platform {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-products__platform-image {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-products__platform-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 800 / 600;
}

.page-products__platform-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-products__platform-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.page-products__platform-list .pill {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
}

.page-products__platform-list p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--clr-text-secondary);
  margin: 0;
}

.page-products__trust {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--clr-accent-gold);
  margin-top: 1rem;
  font-style: italic;
}

/* 使用指南 */
.page-products__guide {
  display: grid;
  gap: 1rem;
}

.page-products__guide-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--guide-step-bg);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--card-border);
}

.page-products__guide-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  min-width: 2.5rem;
  color: var(--clr-accent-gold);
  text-align: center;
}

.page-products__guide-text h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin: 0 0 0.25rem;
  color: var(--clr-text-primary);
}

.page-products__guide-text p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--clr-text-secondary);
  margin: 0;
}

.page-products__guide-cta {
  text-align: center;
  padding: 1.5rem 0 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--clr-text-secondary);
}

.page-products__guide-cta a {
  color: var(--clr-accent-orange-red);
  text-decoration: underline;
  transition: color var(--transition-base);
}

.page-products__guide-cta a:hover,
.page-products__guide-cta a:focus {
  color: var(--clr-accent-gold);
}

/* 桌面端响应式 */
@media (min-width: 768px) {
  .page-products {
    padding: 2rem 2rem 3rem;
  }

  .page-products__title {
    font-size: 2.5rem;
  }

  .page-products__subtitle {
    font-size: 1rem;
  }

  .page-products__hero-image {
    margin-left: -2rem;
    margin-right: -2rem;
  }

  /* 核心功能网格 三列 */
  .page-products__card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-products__card-header {
    flex-direction: column;
    padding: 1.5rem;
  }

  .page-products__card-image {
    max-width: 180px;
  }

  /* 平台特色 左右布局 */
  .page-products__platform {
    flex-direction: row;
    align-items: center;
  }

  .page-products__platform-image {
    flex: 1 1 45%;
    max-width: 500px;
  }

  .page-products__platform-content {
    flex: 1 1 55%;
  }

  .page-products__section--dark {
    padding: 2rem 2rem;
  }

  /* 使用指南 三列 */
  .page-products__guide {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-products__guide-step {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .page-products__guide-num {
    min-width: auto;
  }
}

/* 大桌面 */
@media (min-width: 1024px) {
  .page-products__title {
    font-size: 3rem;
  }

  .page-products__card-image {
    max-width: 220px;
  }

  .page-products__platform-list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .page-products__platform-list li {
    flex: 1 1 45%;
  }
}