/* ========================================
   page-products – 博奥体育应用方案专属样式
   作用域限定 .page-products
   移动端优先 + 桌面端增强
   ======================================== */
.page-products {
  /* ---- 自定义变量（仅限本页） ---- */
  --page-clay: #F5F0EA;
  --page-mist: #EEF2F0;
  --page-sage: #E6F3ED;
  --page-terracotta: #F8EEE8;
  --page-dark-well: #14142B;
  --page-number-color: rgba(26, 92, 255, 0.06);
  --page-number-dark: rgba(255, 255, 255, 0.05);
  --page-flow-color: var(--color-primary);
  --page-font-size-lead: 1.125rem;
  --page-spacing-chapter: 3rem;
  --page-radius-img: var(--radius-lg);

  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  position: relative;
}

/* ---- 面包屑 ---- */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: var(--spacing-md) var(--spacing-md) 0;
  font-size: 0.8125rem;
  color: var(--color-neutral);
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

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

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.page-products .breadcrumb a::after {
  content: " /";
  margin: 0 0.25rem;
  color: var(--color-neutral-light);
}

.page-products .breadcrumb span[aria-current="page"] {
  color: var(--color-neutral-light);
  font-weight: 500;
}

/* ---- 框景首屏 ---- */
.page-products .framed-hero {
  position: relative;
  margin: var(--spacing-md) var(--spacing-md) 0;
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--gradient-brand);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  /* 模拟框景边框刻度 – 共享类已提供基础样式，此处增强 */
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.15),
              0 0 0 2px rgba(26, 92, 255, 0.2);
}

.page-products .framed-hero::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: calc(var(--radius-xl) - 8px);
  pointer-events: none;
}

.page-products .framed-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 720px;
}

.page-products .framed-hero__label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.25rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
  backdrop-filter: blur(4px);
}

.page-products .framed-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.02em;
  margin: 0 0 var(--spacing-xs);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.page-products .framed-hero__sub {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 500;
  opacity: 0.9;
  margin: 0 0 var(--spacing-sm);
}

.page-products .framed-hero__desc {
  font-size: 0.95rem;
  opacity: 0.75;
  line-height: 1.6;
  max-width: 560px;
  margin: 0 auto var(--spacing-md);
}

.page-products .framed-hero__indicators {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.page-products .framed-hero__dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transition: background var(--transition);
}

.page-products .framed-hero__dot:nth-child(1) { background: rgba(255, 255, 255, 0.7); }

/* ---- 数据流动桥接装饰 ---- */
.page-products .flow-bridge {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-sm) 0;
  background: var(--color-bg);
}

.page-products .flow-bridge__img {
  display: block;
  max-width: 200px;
  height: auto;
  opacity: 0.5;
  filter: hue-rotate(0deg) saturate(0.6);
  transition: opacity var(--transition);
}

.page-products .flow-bridge__img:hover {
  opacity: 0.85;
}

/* ---- 章节通用 ---- */
.page-products .chapter {
  position: relative;
  padding: var(--page-spacing-chapter) var(--spacing-md);
  overflow: hidden;
}

.page-products .chapter__number {
  position: absolute;
  top: 0.1em;
  left: 0.05em;
  font-family: var(--font-heading);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 900;
  line-height: 1;
  color: var(--page-number-color);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-products .chapter__title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  font-style: italic;
  margin: 0 0 var(--spacing-sm);
  position: relative;
  z-index: 1;
}

.page-products .chapter__title--light {
  color: var(--color-text-inverse);
}

.page-products .chapter__body {
  position: relative;
  z-index: 1;
}

.page-products .chapter__lead {
  font-size: var(--page-font-size-lead);
  font-weight: 500;
  color: var(--color-neutral);
  margin: 0 0 var(--spacing-md);
  line-height: 1.5;
}

.page-products .chapter__lead--light {
  color: rgba(255, 255, 255, 0.8);
}

.page-products .chapter__feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-products .chapter__feature-item {
  display: flex;
  gap: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-neutral);
}

.page-products .chapter__feature-item--light {
  color: rgba(255, 255, 255, 0.85);
}

.page-products .chapter__feature-icon {
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 0.8rem;
  margin-top: 0.2em;
}

.page-products .chapter__feature-item--light .chapter__feature-icon {
  color: var(--color-accent);
}

.page-products .chapter__cta {
  margin-top: var(--spacing-sm);
}

.page-products .chapter__media {
  position: relative;
  z-index: 1;
  border-radius: var(--page-radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--color-surface);
}

.page-products .chapter__image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: attr(width) / attr(height);
  transition: transform 0.4s ease, box-shadow var(--transition);
}

.page-products .chapter__image:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-card-hover);
}

.page-products .chapter__image--overlay {
  border-radius: var(--radius-md);
}

.page-products .chapter__media-caption {
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-neutral-light);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.page-products .chapter__media-caption--light {
  color: rgba(255, 255, 255, 0.6);
  background: transparent;
  border-top-color: rgba(255, 255, 255, 0.1);
}

/* ---- 各章节专属背景 ---- */
.page-products .chapter--01 {
  background-color: var(--page-clay);
}

.page-products .chapter--02 {
  background-color: var(--page-dark-well);
  color: var(--color-text-inverse);
}

.page-products .chapter--02 .chapter__number {
  color: var(--page-number-dark);
}

.page-products .chapter--03 {
  background-color: var(--page-sage);
}

.page-products .chapter--04 {
  background-color: var(--page-terracotta);
}

/* ---- 暗色章节背景图层 ---- */
.page-products .chapter--dark {
  position: relative;
}

.page-products .chapter__bg-img {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-products .chapter__bg-img-src {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  mix-blend-mode: soft-light;
}

/* ---- 底部导航区 ---- */
.page-products .chapter-nav {
  background: var(--color-dark-bg);
  color: var(--color-text-inverse);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
}

.page-products .chapter-nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.page-products .chapter-nav__label {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 var(--spacing-sm);
  opacity: 0.5;
}

.page-products .chapter-nav__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm) var(--spacing-md);
}

.page-products .chapter-nav__link {
  color: var(--color-text-inverse);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  transition: background var(--transition), border-color var(--transition);
}

.page-products .chapter-nav__link:hover,
.page-products .chapter-nav__link:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent);
}

/* ---- 按钮覆盖（与共享类协同） ---- */
.page-products .btn-primary {
  background: var(--color-primary);
  border: none;
  color: #fff;
  padding: 0.6rem 1.8rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  cursor: default;
  display: inline-block;
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 12px rgba(26, 92, 255, 0.2);
}

.page-products .btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 20px rgba(26, 92, 255, 0.3);
}

.page-products .btn-accent {
  background: var(--color-accent);
  border: none;
  color: #fff;
  padding: 0.6rem 1.8rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  cursor: default;
  display: inline-block;
  text-decoration: none;
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 12px rgba(255, 107, 53, 0.2);
}

.page-products .btn-accent:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

/* ---- 分屏栅格（移动端堆叠，桌面端并排） ---- */
.page-products .split-layout {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-products .split-layout__panel {
  flex: 1;
  min-width: 0;
}

.page-products .split-layout__panel--left {
  order: 1;
}

.page-products .split-layout__panel--right {
  order: 2;
}

/* ---- 进度条（共享类增强） ---- */
.page-products .progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-brand);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ---- 返回顶部（共享类增强） ---- */
.page-products .scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  font-size: 1.25rem;
  cursor: default;
  box-shadow: 0 4px 16px rgba(26, 92, 255, 0.25);
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0;
  transform: translateY(12px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-products .scroll-top[data-visible] {
  opacity: 1;
  transform: translateY(0);
}

/* ---- 交互：悬停数据详情（借助 data-* 属性模拟） ---- */
.page-products .chapter__image[data-detail] {
  cursor: default;
}

/* ---- 动画：订阅按钮点击浮动（渐进增强） ---- */
.page-products [data-subscribe-demo] {
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-products [data-subscribe-demo]:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(255, 107, 53, 0.35);
}

/* ---- 无障碍：动效缩减 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-products .chapter__image,
  .page-products .flow-bridge__img,
  .page-products .scroll-top,
  .page-products [data-subscribe-demo] {
    transition: none !important;
    transform: none !important;
  }
  .page-products .progress-bar {
    display: none;
  }
}

/* ========================================
   桌面端增强 ≥ 768px
   ======================================== */
@media (min-width: 768px) {
  .page-products {
    --page-spacing-chapter: 4rem;
  }

  .page-products .breadcrumb {
    padding: var(--spacing-md) var(--spacing-lg) 0;
  }

  .page-products .framed-hero {
    margin: var(--spacing-md) var(--spacing-lg) 0;
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: 420px;
  }

  .page-products .split-layout {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xl);
  }

  .page-products .split-layout__panel--left {
    flex: 0 1 44%;
    order: 0;
  }

  .page-products .split-layout__panel--right {
    flex: 0 1 52%;
    order: 0;
  }

  .page-products .chapter {
    padding: var(--page-spacing-chapter) var(--spacing-lg);
  }

  .page-products .chapter__number {
    font-size: clamp(12rem, 18vw, 22rem);
    top: 0.05em;
    left: 0.04em;
  }

  .page-products .chapter__image {
    border-radius: var(--radius-lg);
  }

  .page-products .chapter__media-caption {
    padding: 0.6rem 1rem;
    font-size: 0.875rem;
  }

  .page-products .chapter__cta {
    margin-top: var(--spacing-md);
  }

  .page-products .flow-bridge {
    padding: var(--spacing-xs) 0;
  }

  .page-products .chapter-nav {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .page-products .chapter-nav__links {
    gap: var(--spacing-md);
  }

  .page-products .scroll-top {
    right: 2.5rem;
    bottom: 2.5rem;
    width: 48px;
    height: 48px;
  }
}

/* ========================================
   宽屏增强 ≥ 1024px
   ======================================== */
@media (min-width: 1024px) {
  .page-products {
    --page-spacing-chapter: 5rem;
  }

  .page-products .framed-hero {
    margin: var(--spacing-md) auto 0;
    max-width: var(--container-max);
    min-height: 480px;
    border-radius: var(--radius-xl);
  }

  .page-products .split-layout__panel--left {
    flex: 0 1 42%;
  }

  .page-products .split-layout__panel--right {
    flex: 0 1 54%;
  }

  .page-products .chapter {
    padding: var(--page-spacing-chapter) var(--spacing-lg);
  }

  .page-products .chapter__number {
    font-size: 22rem;
  }

  .page-products .chapter__title {
    font-size: 2rem;
  }

  .page-products .chapter__lead {
    font-size: 1.2rem;
  }

  .page-products .chapter__feature-item {
    font-size: 1rem;
  }

  .page-products .chapter__media {
    border-radius: var(--radius-xl);
  }

  .page-products .chapter__media-caption {
    font-size: 0.9rem;
  }

  .page-products .chapter-nav__link {
    font-size: 1.05rem;
    padding: 0.5rem 1.5rem;
  }
}

/* ========================================
   超大屏防止内容过宽 ≥ 1400px
   ======================================== */
@media (min-width: 1400px) {
  .page-products .framed-hero {
    max-width: var(--container-max);
  }

  .page-products .split-layout {
    max-width: var(--container-max);
  }

  .page-products .chapter {
    display: flex;
    justify-content: center;
  }
}

/* ---- 确保章节内列表项 strong 标签继承颜色 ---- */
.page-products .chapter__feature-item strong {
  font-weight: 600;
}

.page-products .chapter__feature-item--light strong {
  color: #fff;
}