/* ===== 服务项目页专属样式 ===== */
.page-products {
  --card-schedule-accent: var(--clr-primary);
  --card-stats-accent: var(--clr-accent);
  --card-fav-accent: var(--clr-dark);
  --hero-bg: linear-gradient(135deg, var(--clr-dark) 0%, #0f1e2a 100%);
  --timeline-line: var(--clr-primary);
  --timeline-dot: var(--clr-primary);
}

/* 布局容器 */
.page-products__container-wide {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-products__container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-wide {
  padding: var(--space-xl) 0;
}

.section-narrow {
  padding: var(--space-2xl) 0;
}

/* ===== Hero 区域 ===== */
.page-products__hero {
  background: var(--hero-bg);
  color: var(--clr-text-light);
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  position: relative;
  overflow: hidden;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--clr-primary-light);
  text-decoration: none;
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--clr-primary);
  text-decoration: underline;
}

.breadcrumb__sep {
  color: var(--clr-gray);
  margin: 0 var(--space-xs);
}

.breadcrumb__current {
  color: var(--clr-white);
  font-weight: 600;
}

.page-products__title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--space-sm);
  color: var(--clr-white);
}

.page-products__subtitle {
  font-size: 1rem;
  line-height: 1.6;
  max-width: 600px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 var(--space-lg);
}

.page-products__hero-visual {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.page-products__hero-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ===== 服务概览卡片网格 ===== */
.service-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.service-card {
  background: var(--card-background);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  box-shadow: var(--shadow-md);
  border-top: 4px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  backdrop-filter: blur(4px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card--schedule {
  border-top-color: var(--card-schedule-accent);
}
.service-card--stats {
  border-top-color: var(--card-stats-accent);
}
.service-card--fav {
  border-top-color: var(--card-fav-accent);
}

.service-card__icon {
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--clr-light);
}

.service-card__title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  color: var(--clr-text);
}

.service-card__summary {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--clr-dark-gray);
  margin: 0 0 var(--space-md);
}

.service-card__detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0;
  color: var(--clr-dark-gray);
  font-size: 0.95rem;
  line-height: 1.6;
}

.service-card__detail p {
  margin: 0;
}

.service-card[data-expandable="true"][data-open="true"] .service-card__detail {
  max-height: 300px;
  padding: var(--space-md) 0 0;
}

.service-card__toggle {
  display: inline-block;
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border: none;
  border-radius: var(--radius-sm);
  background: var(--clr-primary);
  color: var(--clr-white);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}

.service-card__toggle:hover {
  background: var(--clr-primary-light);
}

.service-card__toggle[aria-expanded="true"] {
  background: var(--clr-dark);
}

/* ===== 章节标题 ===== */
.section-heading {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  margin: 0 0 var(--space-sm);
  position: relative;
}

.section-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--clr-primary);
  margin-top: var(--space-sm);
  border-radius: 2px;
}

.section-desc {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--clr-dark-gray);
  margin: 0 0 var(--space-lg);
}

/* ===== 时间轴 ===== */
.timeline {
  position: relative;
  padding-left: 2rem;
  margin-bottom: var(--space-lg);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  width: 3px;
  background: var(--timeline-line);
  border-radius: 2px;
  opacity: 0.5;
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-lg);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -1.35rem;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--timeline-dot);
  border: 3px solid var(--clr-white);
  box-shadow: 0 0 0 2px var(--timeline-dot);
}

.timeline__label {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 var(--space-xs);
  color: var(--clr-text);
}

.timeline__text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--clr-dark-gray);
  margin: 0;
}

/* ===== 图片容器 ===== */
.page-products__figure {
  margin: var(--space-lg) 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--clr-light);
}

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

.page-products__figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8rem;
  color: var(--clr-dark-gray);
  text-align: center;
  letter-spacing: 0.03em;
}

/* ===== 数据展示 ===== */
.data-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.data-showcase__item {
  background: var(--clr-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-left: 4px solid var(--clr-accent);
  transition: transform var(--transition), box-shadow var(--transition);
}

.data-showcase__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.data-showcase__label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-text);
}

.data-showcase__value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-accent);
}

.data-showcase__note {
  font-size: 0.9rem;
  color: var(--clr-dark-gray);
  margin: var(--space-md) 0 0;
  line-height: 1.5;
}

/* ===== 收藏演示 ===== */
.fav-demo {
  background: var(--clr-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
}

.fav-demo__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.fav-demo__item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--clr-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition);
}

.fav-demo__item:hover {
  background: var(--clr-primary-light);
  color: var(--clr-white);
}

.fav-demo__heart {
  font-size: 1.4rem;
  color: var(--clr-primary);
  cursor: default;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.fav-demo__heart:hover {
  transform: scale(1.2);
}

.fav-demo__name {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--clr-text);
}

.fav-demo__tip {
  font-size: 0.88rem;
  color: var(--clr-dark-gray);
  line-height: 1.5;
  margin: 0;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--clr-gray);
}

/* ===== 下载区域 ===== */
.page-products__download {
  background: var(--clr-dark);
  color: var(--clr-text-light);
}

.page-products__download .section-heading {
  color: var(--clr-white);
}

.page-products__download .section-heading::after {
  background: var(--clr-primary);
}

.download-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.download-text {
  text-align: center;
}

.download-text p {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 var(--space-lg);
  max-width: 480px;
}

.download-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}

.btn-primary:hover {
  background: var(--clr-primary-light);
  border-color: var(--clr-primary-light);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--clr-white);
  border-color: var(--clr-white);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.page-products__phone-figure {
  margin: 0;
  flex-shrink: 0;
}

.page-products__phone-img {
  display: block;
  width: 180px;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  max-width: 100%;
}

/* ===== 信任声明 ===== */
.page-products__trust {
  background: var(--clr-light);
  padding: var(--space-lg) 0;
  text-align: center;
  border-top: 1px solid var(--clr-gray);
}

.trust-statement {
  font-size: 0.88rem;
  color: var(--clr-dark-gray);
  line-height: 1.6;
  margin: 0 0 var(--space-md);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.trust-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.trust-link {
  color: var(--clr-dark);
  text-decoration: underline;
  transition: color var(--transition);
}

.trust-link:hover {
  color: var(--clr-primary);
}

.trust-sep {
  color: var(--clr-gray);
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-4px);
  background: var(--clr-primary-light);
}

/* ===== 桌面端样式 (min-width: 768px) ===== */
@media (min-width: 768px) {
  .page-products__title {
    font-size: 3.5rem;
  }

  .page-products__hero {
    padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  }

  .page-products__hero-visual {
    position: absolute;
    right: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    max-width: 320px;
    margin: 0;
  }

  .service-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }

  .service-card {
    padding: var(--space-xl) var(--space-lg);
  }

  .section-heading {
    font-size: 2.4rem;
  }

  .section-narrow {
    padding: var(--space-2xl) 0;
  }

  .timeline {
    padding-left: 2.5rem;
  }

  .timeline__dot {
    left: -1.5rem;
    width: 16px;
    height: 16px;
  }

  .data-showcase {
    grid-template-columns: repeat(3, 1fr);
  }

  .download-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .download-text {
    text-align: left;
    flex: 1;
  }

  .download-actions {
    justify-content: flex-start;
  }

  .page-products__phone-img {
    width: 200px;
  }

  .page-products__container-wide {
    padding: 0 var(--space-lg);
  }

  .page-products__container-narrow {
    padding: 0 var(--space-lg);
  }
}

/* ===== 大型桌面端微调 (min-width: 1024px) ===== */
@media (min-width: 1024px) {
  .page-products__hero {
    padding: var(--space-2xl) 10% var(--space-xl);
  }

  .page-products__hero-visual {
    max-width: 380px;
    right: 10%;
  }

  .service-cards {
    gap: var(--space-2xl);
  }

  .section-narrow {
    padding: var(--space-2xl) 0;
  }
}

/* ===== 响应式图片约束 ===== */
.page-products img {
  max-width: 100%;
  height: auto;
}

.page-products__figure-img,
.page-products__phone-img,
.page-products__hero-img {
  max-width: 100%;
  height: auto;
}

.page-products {
  --card-background: transparent;
}