/* ===== 页面专属样式：平台服务 (.page-products) ===== */
.page-products {
  --ps-primary: #D32F2F;
  --ps-secondary: #2C2C2C;
  --ps-accent: #FFD700;
  --ps-sync-green: #4CAF50;
  --ps-bg-card: #F5F5F5;
  --ps-text-muted: #666666;
  --ps-border-light: #E0E0E0;
  --ps-radius: 0px;
  --ps-transition: 300ms ease-out;
  --ps-font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --ps-container: 1200px;

  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  background: #ffffff;
  color: var(--ps-secondary);
  font-family: Inter, system-ui, -apple-system, sans-serif;
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumb {
  max-width: var(--ps-container);
  margin: 0 auto;
  padding: 24px 24px 0;
  font-size: 14px;
  color: var(--ps-text-muted);
  letter-spacing: 0.02em;
}
.page-products .breadcrumb a {
  color: var(--ps-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ps-transition);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  border-bottom-color: var(--ps-primary);
}
.page-products .breadcrumb-sep {
  margin: 0 8px;
  color: var(--ps-border-light);
}

/* ---------- Section 1: 两个版本，同一核心 (hero) ---------- */
.page-products .ps-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  max-width: var(--ps-container);
  margin: 0 auto;
  padding: 48px 24px 40px;
  border-bottom: 2px solid var(--ps-border-light);
}
.page-products .ps-hero__text {
  flex: 1 1 auto;
  max-width: 640px;
}
.page-products .ps-hero__title {
  margin: 0 0 20px;
  font-size: 48px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--ps-secondary);
  letter-spacing: -0.02em;
}
.page-products .ps-hero__desc {
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ps-text-muted);
  max-width: 600px;
}
.page-products .ps-hero__visual {
  flex: 0 0 auto;
  width: 100%;
  max-width: 600px;
}
.page-products .ps-hero__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--ps-border-light);
}

/* ---------- Section 2+3: 版本对比 ---------- */
.page-products .ps-compare {
  max-width: var(--ps-container);
  margin: 0 auto;
  padding: 56px 24px 48px;
}
.page-products .ps-compare__heading {
  margin: 0 0 40px;
  font-size: 32px;
  font-weight: 800;
  color: var(--ps-secondary);
  position: relative;
  padding-left: 20px;
  border-left: 4px solid var(--ps-primary);
}
.page-products .ps-compare__grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

/* 同步连接指示器（桌面在中间，移动在卡片之间） */
.page-products .ps-sync {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 0;
  position: relative;
  z-index: 2;
}
.page-products .ps-sync__line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--ps-sync-green), transparent);
}
.page-products .ps-sync__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ps-sync-green);
  box-shadow: 0 0 0 0 rgba(76,175,80,0.6);
  animation: ps-pulse 2s ease-in-out infinite;
}
@keyframes ps-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(76,175,80,0.6); }
  50% { box-shadow: 0 0 0 12px rgba(76,175,80,0); }
}
.page-products .ps-sync__img {
  display: block;
  max-width: 100%;
  height: auto;
  width: 240px;
  opacity: 0.7;
}

/* 版本卡片 */
.page-products .ps-version {
  background: var(--ps-bg-card);
  border: 1px solid var(--ps-border-light);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--ps-transition), transform var(--ps-transition);
}
.page-products .ps-version:hover,
.page-products .ps-version:focus-within {
  box-shadow: 0 8px 28px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.page-products .ps-version__header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
}
.page-products .ps-version__badge {
  font-family: var(--ps-font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ps-primary);
  letter-spacing: 0.05em;
  background: rgba(211,47,47,0.08);
  padding: 2px 10px;
  border: 1px solid var(--ps-primary);
}
.page-products .ps-version__name {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  color: var(--ps-secondary);
}
.page-products .ps-version__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-products .ps-version__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ps-secondary);
  padding: 6px 0;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  cursor: default;
  transition: background var(--ps-transition), padding-left var(--ps-transition);
  position: relative;
}
.page-products .ps-version__item::after {
  content: attr(data-hover-detail);
  position: absolute;
  left: 28px;
  top: calc(100% + 4px);
  font-size: 13px;
  color: var(--ps-text-muted);
  background: #ffffff;
  border: 1px solid var(--ps-border-light);
  padding: 6px 12px;
  white-space: normal;
  max-width: 280px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ps-transition);
  z-index: 10;
  line-height: 1.4;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}
.page-products .ps-version__item:hover::after,
.page-products .ps-version__item:focus-visible::after {
  opacity: 1;
}
.page-products .ps-version__icon {
  color: var(--ps-primary);
  font-size: 14px;
  line-height: 1.6;
  flex-shrink: 0;
}
.page-products .ps-version__extra {
  margin-top: 16px;
}
.page-products .ps-version__note {
  margin: 0;
  font-size: 13px;
  color: var(--ps-text-muted);
  font-style: italic;
  font-family: var(--ps-font-mono);
}
.page-products .ps-version__img-wrap {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 120px;
  height: 120px;
  opacity: 0.06;
  pointer-events: none;
  z-index: 0;
}
.page-products .ps-version__bg-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products .ps-version__list,
.page-products .ps-version__extra,
.page-products .ps-version__header {
  position: relative;
  z-index: 1;
}

/* ---------- Section 4: 版本变更记录 ---------- */
.page-products .ps-changelog {
  max-width: var(--ps-container);
  margin: 0 auto;
  padding: 56px 24px 48px;
  border-top: 2px solid var(--ps-border-light);
}
.page-products .ps-changelog__header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}
.page-products .ps-changelog__title-group {
  flex: 1;
}
.page-products .ps-changelog__title {
  margin: 0 0 8px;
  font-size: 32px;
  font-weight: 800;
  color: var(--ps-secondary);
}
.page-products .ps-changelog__subtitle {
  margin: 0;
  font-size: 16px;
  color: var(--ps-text-muted);
  font-family: var(--ps-font-mono);
  letter-spacing: 0.02em;
}
.page-products .ps-changelog__icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
}
.page-products .ps-changelog__icon-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* 时间轴 */
.page-products .ps-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 28px;
  margin-bottom: 32px;
}
.page-products .ps-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--ps-border-light);
}
.page-products .ps-timeline__node {
  position: relative;
  padding: 16px 0 16px 20px;
  border-left: 2px solid transparent;
  transition: border-color var(--ps-transition);
}
.page-products .ps-timeline__node:hover {
  border-left-color: var(--ps-primary);
}
.page-products .ps-timeline__marker {
  position: absolute;
  left: -24px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ps-primary);
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 2px var(--ps-primary);
  z-index: 1;
}
.page-products .ps-timeline__content {
  background: var(--ps-bg-card);
  border: 1px solid var(--ps-border-light);
  padding: 20px 24px;
  transition: box-shadow var(--ps-transition);
}
.page-products .ps-timeline__node:hover .ps-timeline__content {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.page-products .ps-timeline__label {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 700;
  color: var(--ps-secondary);
}
.page-products .ps-timeline__summary {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--ps-text-muted);
  line-height: 1.5;
}
.page-products .ps-timeline__details {
  font-size: 14px;
  color: var(--ps-secondary);
}
.page-products .ps-timeline__details summary {
  cursor: pointer;
  color: var(--ps-primary);
  font-weight: 600;
  font-family: var(--ps-font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  user-select: none;
  transition: opacity var(--ps-transition);
}
.page-products .ps-timeline__details summary:hover,
.page-products .ps-timeline__details summary:focus-visible {
  opacity: 0.75;
}
.page-products .ps-timeline__detail-body {
  padding-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ps-text-muted);
}
.page-products .ps-timeline__detail-body p {
  margin: 0 0 12px;
}
.page-products .btn--small {
  font-size: 13px;
  padding: 6px 16px;
  background: var(--ps-primary);
  color: #ffffff;
  border: 1px solid var(--ps-primary);
  text-decoration: none;
  display: inline-block;
  transition: background var(--ps-transition), color var(--ps-transition);
}
.page-products .btn--small:hover,
.page-products .btn--small:focus-visible {
  background: transparent;
  color: var(--ps-primary);
}
.page-products .ps-changelog__footnote {
  margin: 0;
  font-size: 14px;
  color: var(--ps-text-muted);
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--ps-border-light);
}
.page-products .ps-changelog__footnote a {
  color: var(--ps-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ps-transition);
}
.page-products .ps-changelog__footnote a:hover,
.page-products .ps-changelog__footnote a:focus-visible {
  border-bottom-color: var(--ps-primary);
}

/* ---------- CTA 引导区 ---------- */
.page-products .ps-cta {
  max-width: var(--ps-container);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 2px solid var(--ps-border-light);
}
.page-products .ps-cta__inner {
  flex: 1;
}
.page-products .ps-cta__text {
  margin: 0 0 20px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ps-secondary);
  max-width: 480px;
}
.page-products .ps-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-products .btn--primary {
  background: var(--ps-primary);
  color: #ffffff;
  border: 1px solid var(--ps-primary);
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--ps-transition), color var(--ps-transition), box-shadow var(--ps-transition);
  display: inline-block;
}
.page-products .btn--primary:hover,
.page-products .btn--primary:focus-visible {
  background: transparent;
  color: var(--ps-primary);
  box-shadow: inset 0 0 0 1px var(--ps-primary);
}
.page-products .btn--outline {
  background: transparent;
  color: var(--ps-secondary);
  border: 1px solid var(--ps-secondary);
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--ps-transition), color var(--ps-transition), border-color var(--ps-transition);
  display: inline-block;
}
.page-products .btn--outline:hover,
.page-products .btn--outline:focus-visible {
  background: var(--ps-secondary);
  color: #ffffff;
  border-color: var(--ps-secondary);
}
.page-products .ps-cta__deco {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  opacity: 0.3;
}
.page-products .ps-cta__icon {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* ---------- 视觉隐藏（用于可访问性标题） ---------- */
.page-products .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ---------- 响应式：桌面端 (min-width: 768px) ---------- */
@media (min-width: 768px) {
  .page-products .ps-hero {
    flex-direction: row;
    padding: 64px 24px 48px;
    gap: 48px;
  }
  .page-products .ps-hero__text {
    flex: 1 1 55%;
  }
  .page-products .ps-hero__visual {
    flex: 0 0 45%;
    max-width: 500px;
  }
  .page-products .ps-hero__title {
    font-size: 56px;
  }
  .page-products .ps-hero__desc {
    font-size: 20px;
  }

  .page-products .ps-compare__grid {
    flex-direction: row;
    align-items: stretch;
    gap: 0;
  }
  .page-products .ps-version {
    flex: 1;
    padding: 36px 28px;
  }
  .page-products .ps-version--browser {
    border-right: none;
  }
  .page-products .ps-sync {
    flex-direction: column;
    width: 80px;
    padding: 0 16px;
    flex-shrink: 0;
    justify-content: center;
  }
  .page-products .ps-sync__line {
    width: 2px;
    height: 60px;
  }
  .page-products .ps-sync__img {
    width: 60px;
  }

  .page-products .ps-changelog__header {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-products .ps-changelog__icon {
    width: 100px;
    height: 100px;
  }

  .page-products .ps-timeline {
    padding-left: 40px;
  }
  .page-products .ps-timeline::before {
    left: 18px;
  }
  .page-products .ps-timeline__marker {
    left: -32px;
    width: 16px;
    height: 16px;
  }
  .page-products .ps-timeline__content {
    padding: 24px 28px;
  }

  .page-products .ps-cta {
    flex-direction: row;
    padding: 48px 24px 72px;
  }
  .page-products .ps-cta__deco {
    width: 100px;
    height: 100px;
  }
}

@media (min-width: 1024px) {
  .page-products .ps-hero__title {
    font-size: 64px;
  }
  .page-products .ps-hero__visual {
    max-width: 560px;
  }
  .page-products .ps-version {
    padding: 44px 32px;
  }
  .page-products .ps-sync {
    width: 100px;
  }
  .page-products .ps-sync__line {
    height: 80px;
  }
  .page-products .ps-sync__img {
    width: 80px;
  }
  .page-products .ps-changelog__title {
    font-size: 36px;
  }
}

/* ---------- 窄屏溢出保护 ---------- */
@media (max-width: 480px) {
  .page-products .breadcrumb {
    padding: 16px 16px 0;
    font-size: 12px;
  }
  .page-products .ps-hero {
    padding: 32px 16px 24px;
    gap: 24px;
  }
  .page-products .ps-hero__title {
    font-size: 32px;
  }
  .page-products .ps-hero__desc {
    font-size: 16px;
  }
  .page-products .ps-compare {
    padding: 32px 16px 24px;
  }
  .page-products .ps-compare__heading {
    font-size: 24px;
    padding-left: 14px;
  }
  .page-products .ps-version {
    padding: 20px 16px;
  }
  .page-products .ps-version__name {
    font-size: 22px;
  }
  .page-products .ps-version__item {
    font-size: 14px;
  }
  .page-products .ps-version__item::after {
    left: 20px;
    max-width: 200px;
    font-size: 12px;
  }
  .page-products .ps-sync__img {
    width: 160px;
  }
  .page-products .ps-changelog {
    padding: 32px 16px 24px;
  }
  .page-products .ps-changelog__title {
    font-size: 24px;
  }
  .page-products .ps-timeline {
    padding-left: 20px;
  }
  .page-products .ps-timeline__content {
    padding: 14px 16px;
  }
  .page-products .ps-timeline__label {
    font-size: 17px;
  }
  .page-products .ps-cta {
    padding: 24px 16px 40px;
    flex-direction: column;
    align-items: flex-start;
  }
  .page-products .ps-cta__text {
    font-size: 16px;
  }
  .page-products .btn--primary,
  .page-products .btn--outline {
    padding: 10px 20px;
    font-size: 14px;
  }
  .page-products .ps-cta__deco {
    width: 60px;
    height: 60px;
  }
  .page-products .ps-version__img-wrap {
    width: 80px;
    height: 80px;
  }
}