.page-products {
  --sidebar-width: 280px;
  --card-radius: 12px;
  --card-gap: 1.5rem;
  display: block;
  width: 100%;
  max-width: 100%;
  background: var(--color-bg-dark, #0A0A0A);
  color: var(--color-text-primary, #FFFFFF);
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
}

/* ========== 容器：移动端纵向，桌面端横向 ========== */
.page-products .products-container {
  display: flex;
  flex-direction: column;
  min-height: 80vh;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

/* ========== 移动端：侧边栏折叠为顶部条 ========== */
.page-products .products-sidebar {
  flex-shrink: 0;
  background: var(--color-bg-medium, #1A1A1A);
  border-bottom: 1px solid var(--color-accent-gold, #FFD700);
  padding: 0.75rem 1rem;
  position: relative;
  z-index: 10;
  width: 100%;
}
.page-products .sidebar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}
.page-products .sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-tech, 'Orbitron', 'Courier New', monospace);
  font-size: 1.1rem;
  color: var(--color-accent-gold, #FFD700);
  letter-spacing: 0.05em;
  margin-right: auto;
}
.page-products .sidebar-brand-icon {
  font-size: 1.4rem;
  color: var(--color-primary, #8B0000);
}
.page-products .sidebar-nav {
  display: none;
}
.page-products .sidebar-heading {
  display: none;
}
.page-products .sidebar-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-products .sidebar-link {
  color: var(--color-text-secondary, #B0B0B0);
  text-decoration: none;
  font-size: 0.85rem;
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  padding: 0.25rem 0.6rem;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.page-products .sidebar-link:hover,
.page-products .sidebar-link:focus-visible {
  color: var(--color-accent-gold, #FFD700);
  border-color: var(--color-accent-gold, #FFD700);
  background: rgba(255, 215, 0, 0.06);
}
.page-products .sidebar-bookmark {
  display: none;
}
.page-products .sidebar-contact {
  display: none;
}

/* ========== 移动端主内容 ========== */
.page-products .products-main {
  flex: 1;
  padding: 1.5rem 1rem 3rem;
  max-width: 100%;
  min-width: 0;
}

/* ========== 面包屑 ========== */
.page-products .breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin-bottom: 1.25rem;
  letter-spacing: 0.03em;
}
.page-products .breadcrumb a {
  color: var(--color-accent-neon, #00BFFF);
  text-decoration: none;
  transition: color 0.2s;
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--color-accent-gold, #FFD700);
  text-decoration: underline;
}
.page-products .breadcrumb[aria-current="page"] {
  color: var(--color-text-primary, #FFFFFF);
}

/* ========== 标题区 ========== */
.page-products .products-title {
  font-family: var(--font-heading, 'Poppins', 'Noto Sans SC', sans-serif);
  font-size: 2.2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 0.3rem 0;
  line-height: 1.1;
  position: relative;
  display: inline-block;
}
.page-products .products-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-gold, #FFD700), var(--color-primary, #8B0000));
  margin-top: 0.5rem;
  border-radius: 2px;
}
.page-products .products-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0.75rem 0 2rem 0;
  font-weight: 300;
  max-width: 600px;
  line-height: 1.5;
}

/* ========== 通用章节 ========== */
.page-products .section {
  margin-bottom: 3rem;
}
.page-products .section-heading {
  font-family: var(--font-heading, 'Poppins', 'Noto Sans SC', sans-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent-gold, #FFD700);
  letter-spacing: 0.04em;
  margin: 0 0 1.25rem 0;
  padding-left: 0.75rem;
  border-left: 4px solid var(--color-primary, #8B0000);
}

/* ========== 快速下载面板 — 卡片网格 ========== */
.page-products .card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--card-gap);
}

/* ========== 单张下载卡片 ========== */
.page-products .download-card {
  background: var(--color-bg-medium, #1A1A1A);
  border-radius: var(--card-radius);
  padding: 1.5rem 1.25rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid rgba(255, 215, 0, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}
.page-products .download-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary, #8B0000), var(--color-accent-gold, #FFD700), var(--color-accent-neon, #00BFFF));
  opacity: 0.6;
}
.page-products .download-card::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -30%;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 215, 0, 0.04) 100%);
  transform: rotate(25deg);
  pointer-events: none;
}
.page-products .download-card:hover,
.page-products .download-card:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(139, 0, 0, 0.25), 0 0 0 1px rgba(255, 215, 0, 0.15);
}
.page-products .download-card:hover::after {
  opacity: 0.7;
}
.page-products .card-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 1rem;
  border: 2px solid rgba(255, 215, 0, 0.2);
  background: var(--color-bg-dark, #0A0A0A);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s, transform 0.3s;
}
.page-products .download-card:hover .card-icon {
  border-color: var(--color-accent-gold, #FFD700);
  transform: scale(1.04);
}
.page-products .card-icon-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-products .card-title {
  font-family: var(--font-heading, 'Poppins', 'Noto Sans SC', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 0.4rem 0;
  letter-spacing: 0.03em;
}
.page-products .card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary, #B0B0B0);
  line-height: 1.5;
  margin: 0 0 1.25rem 0;
  max-width: 260px;
}
.page-products .card-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-primary, #8B0000);
  color: var(--color-text-primary, #FFFFFF);
  padding: 0.6rem 1.4rem 0.6rem 1.6rem;
  border-radius: 30px;
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: background 0.3s, box-shadow 0.3s, transform 0.2s;
  border: 1px solid transparent;
  cursor: pointer;
}
.page-products .card-btn:hover,
.page-products .card-btn:focus-visible {
  background: var(--color-primary-light, #B22222);
  box-shadow: 0 0 20px rgba(139, 0, 0, 0.4);
  transform: scale(1.02);
  border-color: var(--color-accent-gold, #FFD700);
}
.page-products .btn-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  display: inline-block;
  filter: brightness(1.2);
  transition: filter 0.2s;
}
.page-products .card-btn:hover .btn-icon {
  filter: brightness(1.8) drop-shadow(0 0 6px rgba(255, 215, 0, 0.5));
}

/* ========== 索引分类列表 ========== */
.page-products .index-categories {
  position: relative;
}
.page-products .category-bg {
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  overflow: hidden;
  opacity: 0.15;
  z-index: 0;
  pointer-events: none;
}
.page-products .category-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-products .category-list {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0.5rem 0;
}
.page-products .category-item {
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(255, 215, 0, 0.06);
  transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.page-products .category-item:hover {
  background: rgba(26, 26, 26, 0.95);
  border-color: rgba(255, 215, 0, 0.2);
  transform: translateX(4px);
}
.page-products .category-tag {
  font-family: var(--font-tech, 'Orbitron', 'Courier New', monospace);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  background: var(--color-bg-dark, #0A0A0A);
  color: var(--color-text-secondary, #B0B0B0);
  border: 1px solid rgba(255, 215, 0, 0.12);
  text-transform: uppercase;
}
.page-products .category-tag--tools {
  border-color: rgba(0, 191, 255, 0.3);
  color: var(--color-accent-neon, #00BFFF);
}
.page-products .category-tag--docs {
  border-color: rgba(255, 215, 0, 0.3);
  color: var(--color-accent-gold, #FFD700);
}
.page-products .category-tag--media {
  border-color: rgba(178, 34, 34, 0.4);
  color: var(--color-primary-light, #B22222);
}
.page-products .category-tag--archive {
  border-color: rgba(255, 215, 0, 0.2);
  color: var(--color-text-secondary, #B0B0B0);
}
.page-products .category-count {
  font-size: 0.75rem;
  color: var(--color-text-secondary, #B0B0B0);
  font-weight: 300;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* ========== 旧版本专区 ========== */
.page-products .legacy-archive {
  background: linear-gradient(145deg, var(--color-bg-medium, #1A1A1A), var(--color-bg-dark, #0A0A0A));
  border-radius: var(--card-radius);
  border: 1px solid rgba(255, 215, 0, 0.1);
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
}
.page-products .legacy-archive::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle at 100% 0%, rgba(139, 0, 0, 0.15), transparent 70%);
  pointer-events: none;
}
.page-products .legacy-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}
.page-products .legacy-icon {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--color-bg-dark, #0A0A0A);
  border: 2px dashed rgba(255, 215, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.page-products .legacy-archive:hover .legacy-icon {
  border-color: rgba(255, 215, 0, 0.35);
  transform: scale(1.02);
}
.page-products .legacy-icon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  padding: 1.2rem;
}
.page-products .legacy-text {
  text-align: center;
  max-width: 440px;
}
.page-products .legacy-desc {
  font-size: 1rem;
  color: var(--color-text-secondary, #B0B0B0);
  line-height: 1.6;
  margin: 0 0 1.25rem 0;
}
.page-products .btn--gold {
  background: transparent;
  color: var(--color-accent-gold, #FFD700);
  border: 2px solid var(--color-accent-gold, #FFD700);
  padding: 0.65rem 2rem;
  border-radius: 30px;
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s, transform 0.2s;
  display: inline-block;
  cursor: pointer;
}
.page-products .btn--gold:hover,
.page-products .btn--gold:focus-visible {
  background: var(--color-accent-gold, #FFD700);
  color: var(--color-bg-dark, #0A0A0A);
  box-shadow: 0 0 30px rgba(255, 215, 0, 0.25);
  transform: scale(1.03);
}

/* ========== 底部氛围图 ========== */
.page-products .bottom-ambient {
  margin-top: 2rem;
  border-radius: var(--card-radius);
  overflow: hidden;
  max-height: 200px;
  opacity: 0.35;
  transition: opacity 0.4s;
}
.page-products .bottom-ambient:hover {
  opacity: 0.6;
}
.page-products .ambient-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  display: block;
}

/* ========== 桌面端媒体查询（≥768px） ========== */
@media (min-width: 768px) {
  .page-products .products-container {
    flex-direction: row;
    max-width: var(--content-max-width, 1200px);
    margin: 0 auto;
  }

  /* 侧边栏固定 */
  .page-products .products-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    position: sticky;
    top: var(--header-height, 60px);
    height: calc(100vh - var(--header-height, 60px));
    overflow-y: auto;
    border-right: 1px solid rgba(255, 215, 0, 0.12);
    border-bottom: none;
    background: var(--color-bg-dark, #0A0A0A);
    padding: 2rem 1.5rem;
    display: block;
  }
  .page-products .sidebar-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 1.8rem;
    display: flex;
  }
  .page-products .sidebar-brand {
    font-size: 1.3rem;
    margin-right: 0;
    justify-content: flex-start;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 215, 0, 0.08);
  }
  .page-products .sidebar-nav {
    display: block;
  }
  .page-products .sidebar-heading {
    display: block;
    font-family: var(--font-tech, 'Orbitron', 'Courier New', monospace);
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--color-accent-gold, #FFD700);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0 0 0.75rem 0;
    opacity: 0.7;
  }
  .page-products .sidebar-links {
    flex-direction: column;
    gap: 0.4rem;
  }
  .page-products .sidebar-link {
    font-size: 0.9rem;
    padding: 0.4rem 0.6rem;
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0;
    display: block;
  }
  .page-products .sidebar-link:hover,
  .page-products .sidebar-link:focus-visible {
    border-left-color: var(--color-accent-gold, #FFD700);
    background: rgba(255, 215, 0, 0.04);
    color: var(--color-accent-gold, #FFD700);
  }
  .page-products .sidebar-bookmark {
    display: block;
    margin-top: 0.5rem;
  }
  .page-products .sidebar-bookmark .btn--gold {
    width: 100%;
    text-align: center;
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
    background: transparent;
    border-color: var(--color-accent-gold, #FFD700);
    color: var(--color-accent-gold, #FFD700);
    border-radius: 6px;
    cursor: default;
  }
  .page-products .sidebar-bookmark .btn--gold:hover {
    background: rgba(255, 215, 0, 0.06);
    box-shadow: none;
    transform: none;
  }
  .page-products .sidebar-contact {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 215, 0, 0.06);
    margin-top: auto;
  }
  .page-products .sidebar-contact-label {
    font-size: 0.7rem;
    color: var(--color-text-secondary, #B0B0B0);
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }
  .page-products .sidebar-contact-email {
    font-size: 0.8rem;
    color: var(--color-accent-neon, #00BFFF);
    text-decoration: none;
    word-break: break-all;
    transition: color 0.2s;
  }
  .page-products .sidebar-contact-email:hover {
    color: var(--color-accent-gold, #FFD700);
  }

  /* 主内容区域 */
  .page-products .products-main {
    padding: 2.5rem 2.5rem 4rem;
    max-width: calc(100% - var(--sidebar-width));
  }
  .page-products .products-title {
    font-size: 3rem;
  }
  .page-products .products-title::after {
    width: 80px;
    height: 5px;
  }
  .page-products .products-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
  }

  /* 卡片网格 2列 */
  .page-products .card-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-products .download-card {
    padding: 2rem 1.5rem 2rem;
  }

  /* 分类列表 3列 */
  .page-products .category-list {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
  }
  .page-products .category-item {
    padding: 1rem 1.25rem;
  }
  .page-products .category-tag {
    font-size: 0.8rem;
  }

  /* 旧版本专区 横向布局 */
  .page-products .legacy-content {
    flex-direction: row;
    text-align: left;
    gap: 2.5rem;
  }
  .page-products .legacy-icon {
    width: 220px;
    height: 220px;
    flex-shrink: 0;
  }
  .page-products .legacy-text {
    text-align: left;
  }

  /* 底部氛围图 */
  .page-products .bottom-ambient {
    max-height: 260px;
    margin-top: 3rem;
  }
  .page-products .ambient-img {
    max-height: 260px;
  }
}

/* ========== 大桌面端（≥1024px） ========== */
@media (min-width: 1024px) {
  .page-products .products-main {
    padding: 3rem 3.5rem 5rem;
  }
  .page-products .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
  }
  .page-products .category-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }
  .page-products .products-title {
    font-size: 3.6rem;
  }
}

/* ========== 窄屏辅助（≤380px） ========== */
@media (max-width: 380px) {
  .page-products .products-main {
    padding: 1rem 0.75rem 2rem;
  }
  .page-products .products-title {
    font-size: 1.6rem;
  }
  .page-products .card-grid {
    gap: 1rem;
  }
  .page-products .download-card {
    padding: 1rem 0.75rem 1.25rem;
  }
  .page-products .card-icon {
    width: 72px;
    height: 72px;
  }
  .page-products .category-list {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }
  .page-products .category-item {
    padding: 0.5rem 0.6rem;
    flex-wrap: wrap;
    gap: 0.3rem;
  }
  .page-products .legacy-icon {
    width: 130px;
    height: 130px;
  }
  .page-products .legacy-archive {
    padding: 1.25rem 0.75rem;
  }
}

/* ========== 打印样式 ========== */
@media print {
  .page-products .products-sidebar {
    display: none;
  }
  .page-products .products-main {
    max-width: 100%;
    padding: 1rem;
  }
  .page-products .download-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .page-products .bottom-ambient {
    display: none;
  }
  .page-products .legacy-archive {
    border: 1px solid #ccc;
    background: #f5f5f5;
  }
  .page-products .btn,
  .page-products .btn--gold,
  .page-products .card-btn {
    border: 1px solid #000;
    color: #000;
    background: transparent;
  }
}