.page-products {
  --border-thick: 4px;
  --color-primary: #004d40;
  --color-secondary: #cfa144;
  --color-accent: #8b2252;
  --color-bg-dark: #00251a;
  --color-bg-light: #f5f5f0;
  --color-text: #1a1a1a;
  --color-text-light: #ffffff;
  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-body: Georgia, 'Times New Roman', serif;
  --shadow-heavy: 8px 8px 0 rgba(0,0,0,0.15);
  --shadow-heavy-accent: 8px 8px 0 rgba(139,34,82,0.25);
  --transition-speed: 0.3s ease;
  display: block;
  max-width: 100%;
  padding: 1rem 1rem 2rem;
  background: var(--color-bg-light);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

/* 面包屑 */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.page-products .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-speed);
}

.page-products .breadcrumb a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.page-products .breadcrumb-sep {
  color: var(--color-secondary);
  font-weight: bold;
}

.page-products .breadcrumb [aria-current="page"] {
  color: var(--color-secondary);
  font-weight: bold;
}

/* 页面标题区 */
.page-products .page-hero {
  background: var(--color-primary);
  padding: 1.5rem 1.5rem 2rem;
  margin: 0 -1rem 1.5rem;
  border-bottom: var(--border-thick) solid var(--color-secondary);
  box-shadow: var(--shadow-heavy);
}

.page-products .page-hero-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.page-products .page-hero-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0;
  line-height: 1.5;
}

/* 命令栏导航 */
.page-products .cmd-bar {
  display: flex;
  gap: 0.25rem;
  margin: 0 0 1.5rem;
  padding: 0.25rem;
  background: var(--color-bg-dark);
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy);
  flex-wrap: wrap;
}

.page-products .cmd-item {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  background: transparent;
  text-decoration: none;
  transition: background var(--transition-speed), color var(--transition-speed);
  flex: 1 0 auto;
  text-align: center;
}

.page-products .cmd-item:hover,
.page-products .cmd-item:focus {
  background: var(--color-primary);
  color: var(--color-secondary);
  outline: none;
}

/* 两栏网格 */
.page-products .content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* 通用section标题 */
.page-products .section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: var(--border-thick) solid var(--color-secondary);
  line-height: 1.2;
}

/* APP下载卡片 */
.page-products .download-section {
  background: var(--color-bg-light);
}

.page-products .download-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--color-text-light);
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy);
}

.page-products .app-mockup {
  flex-shrink: 0;
  text-align: center;
}

.page-products .app-mockup img {
  max-width: 100%;
  height: auto;
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy-accent);
  display: block;
  margin: 0 auto;
}

.page-products .download-info {
  flex: 1;
}

.page-products .download-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0 0 1.25rem;
}

.page-products .download-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 金色按钮 */
.page-products .btn-gold {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-bg-dark);
  background: var(--color-secondary);
  border: var(--border-thick) solid var(--color-bg-dark);
  text-decoration: none;
  text-align: center;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
  transition: background var(--transition-speed), box-shadow var(--transition-speed), transform var(--transition-speed);
  cursor: default;
}

.page-products .btn-gold:hover,
.page-products .btn-gold:focus {
  background: #dfb45a;
  box-shadow: 0 0 18px rgba(207,161,68,0.6), 4px 4px 0 rgba(0,0,0,0.15);
  transform: translate(-1px, -1px);
  outline: none;
}

/* 帮助中心 */
.page-products .help-section {
  background: var(--color-bg-light);
}

.page-products .help-tabs {
  background: var(--color-text-light);
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy);
  overflow: hidden;
}

.page-products .tab-nav {
  display: flex;
  border-bottom: var(--border-thick) solid var(--color-primary);
  background: var(--color-bg-dark);
}

.page-products .tab-btn {
  flex: 1;
  padding: 0.7rem 1rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-light);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background var(--transition-speed), color var(--transition-speed);
  text-align: center;
}

.page-products .tab-btn[aria-selected="true"] {
  background: var(--color-primary);
  color: var(--color-secondary);
  box-shadow: inset 0 -3px 0 var(--color-secondary);
}

.page-products .tab-btn:hover,
.page-products .tab-btn:focus {
  background: var(--color-primary);
  color: var(--color-secondary);
  outline: none;
}

.page-products .tab-panel {
  padding: 1.25rem;
  display: block;
}

.page-products .tab-panel[hidden] {
  display: none;
}

/* FAQ列表 */
.page-products .faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-products .faq-item {
  padding: 0.75rem 1rem;
  border-left: var(--border-thick) solid var(--color-secondary);
  background: var(--color-bg-light);
}

.page-products .faq-q {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-primary);
  margin: 0 0 0.35rem;
  line-height: 1.3;
}

.page-products .faq-a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-text);
  margin: 0;
}

.page-products .faq-extra {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 0.5rem;
}

.page-products .faq-img {
  max-width: 100%;
  height: auto;
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy);
}

.page-products .service-cover {
  max-width: 100%;
  height: auto;
  border: var(--border-thick) solid var(--color-accent);
  box-shadow: var(--shadow-heavy-accent);
}

/* 资料库 */
.page-products .library-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-products .library-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--color-bg-light);
  border-left: var(--border-thick) solid var(--color-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
}

.page-products .lib-icon {
  font-size: 1.2rem;
  line-height: 1;
  color: var(--color-secondary);
}

.page-products .lib-img {
  max-width: 100%;
  height: auto;
  border: var(--border-thick) solid var(--color-primary);
  box-shadow: var(--shadow-heavy);
  display: block;
}

/* 产品线当季切换 */
.page-products .switch-section {
  background: var(--color-bg-dark);
  margin: 0 -1rem 0;
  padding: 2rem 1rem;
  border-top: var(--border-thick) solid var(--color-secondary);
  box-shadow: var(--shadow-heavy);
}

.page-products .switch-title {
  color: var(--color-secondary);
  border-bottom-color: var(--color-primary);
}

.page-products .switch-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin: 0 0 1.5rem;
  line-height: 1.5;
}

.page-products .product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-products .product-card {
  background: var(--color-primary);
  padding: 1.25rem;
  text-align: center;
  border: var(--border-thick) solid var(--color-secondary);
  box-shadow: 6px 6px 0 rgba(0,0,0,0.3);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.page-products .product-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 rgba(0,0,0,0.25);
}

.page-products .product-icon {
  max-width: 100%;
  height: auto;
  border-radius: 50%;
  border: 3px solid var(--color-secondary);
  box-shadow: 0 0 0 2px var(--color-bg-dark);
  transition: box-shadow var(--transition-speed);
}

.page-products .product-card:hover .product-icon {
  box-shadow: 0 0 16px rgba(207,161,68,0.5), 0 0 0 2px var(--color-bg-dark);
}

.page-products .product-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin: 0.25rem 0 0;
  line-height: 1.2;
}

.page-products .product-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.4;
}

/* 滚动显现（渐进增强） */
.page-products [data-reveal] {
  opacity: 1;
  transform: none;
}

/* 响应式：平板及以上 */
@media (min-width: 640px) {
  .page-products {
    padding: 1.5rem 2rem 3rem;
  }

  .page-products .page-hero {
    margin-left: -2rem;
    margin-right: -2rem;
    padding: 2rem 2.5rem 2.5rem;
  }

  .page-products .page-hero-title {
    font-size: 2.8rem;
  }

  .page-products .page-hero-desc {
    font-size: 1.1rem;
  }

  .page-products .cmd-bar {
    gap: 0.5rem;
    padding: 0.5rem;
  }

  .page-products .cmd-item {
    flex: 0 1 auto;
    font-size: 0.85rem;
  }

  .page-products .download-card {
    flex-direction: row;
    align-items: flex-start;
    padding: 1.5rem;
  }

  .page-products .app-mockup {
    flex: 0 0 200px;
  }

  .page-products .download-buttons {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .page-products .btn-gold {
    flex: 0 1 auto;
  }

  .page-products .faq-extra {
    flex-wrap: nowrap;
  }

  .page-products .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-products .switch-section {
    padding: 2.5rem 2rem;
    margin-left: -2rem;
    margin-right: -2rem;
  }
}

@media (min-width: 960px) {
  .page-products {
    padding: 2rem 3rem 4rem;
  }

  .page-products .page-hero {
    margin-left: -3rem;
    margin-right: -3rem;
    padding: 2.5rem 3rem 3rem;
  }

  .page-products .page-hero-title {
    font-size: 3.2rem;
  }

  .page-products .content-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .page-products .download-card {
    flex-direction: column;
    padding: 1.5rem;
    height: 100%;
  }

  .page-products .app-mockup {
    flex: 0 0 auto;
  }

  .page-products .app-mockup img {
    max-width: 180px;
  }

  .page-products .download-buttons {
    flex-direction: column;
  }

  .page-products .help-section {
    height: 100%;
  }

  .page-products .help-tabs {
    height: calc(100% - 3rem);
    display: flex;
    flex-direction: column;
  }

  .page-products .tab-panel {
    flex: 1;
  }

  .page-products .switch-section {
    padding: 3rem;
    margin-left: -3rem;
    margin-right: -3rem;
  }

  .page-products .product-grid {
    gap: 2rem;
  }

  .page-products .product-card {
    padding: 1.75rem 1.25rem;
  }
}