.page-products {
  --page-max-width: 1200px;
  --page-content-padding: 1.5rem;
  --page-card-gap: 1.5rem;
  --page-section-gap: 3rem;
  --page-tab-accent: #FF6B35;
  --page-tab-inactive: #12183A;
  --page-step-num-size: 2.5rem;
  color: var(--color-text, #F5F7FA);
  background-color: var(--color-bg, #0A0E27);
  font-family: var(--font-body, 'Arial', 'Helvetica', sans-serif);
  line-height: var(--line-body, 1.6);
  padding: 1rem 0 2rem;
}

.page-products__inner {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--page-content-padding);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted, #8C9EAB);
  margin-bottom: 1.5rem;
  padding: 0;
  list-style: none;
}
.breadcrumb a {
  color: var(--color-text-muted, #8C9EAB);
  text-decoration: none;
  transition: color var(--transition, 0.3s ease);
}
.breadcrumb a:hover {
  color: var(--color-accent, #FF6B35);
}
.breadcrumb__sep {
  user-select: none;
  color: var(--color-text-muted, #8C9EAB);
}
.breadcrumb [aria-current="page"] {
  color: var(--color-text, #F5F7FA);
}

/* 首屏标题区 */
.page-products__hero {
  margin-bottom: 2.5rem;
}
.page-products__hero__text {
  border-left: 3px solid var(--color-accent, #FF6B35);
  padding-left: 1rem;
}
.page-products__hero__title {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 2.25rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.05em;
  margin: 0 0 0.25rem;
  color: var(--color-text, #F5F7FA);
  line-height: 1.2;
}
.page-products__hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted, #8C9EAB);
  margin: 0;
  font-weight: 300;
}

/* 分割线 */
.page-products__divider {
  margin: var(--page-section-gap) 0;
  opacity: 0.5;
}

/* 章节标题通用 */
.page-products__section-title {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.75rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.04em;
  margin: 0 0 1.5rem;
  color: var(--color-text, #F5F7FA);
  line-height: 1.3;
  position: relative;
  display: inline-block;
}
.page-products__section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: linear-gradient(135deg, var(--color-border-start, #B0BEC5), var(--color-border-end, #ECEFF1));
  margin-top: 0.5rem;
}

/* 入口卡片 */
.page-products__entry-cards {
  margin-bottom: var(--page-section-gap);
}
.page-products__entry-cards__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--page-card-gap);
}
.page-products__card {
  background: var(--color-bg-elevated, #12183A);
  border: 1px solid rgba(176, 190, 197, 0.25);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color var(--transition, 0.3s ease), box-shadow var(--transition, 0.3s ease);
  position: relative;
}
.page-products__card:hover {
  border-color: var(--color-glow, #00BCD4);
  box-shadow: 0 0 20px rgba(0, 188, 212, 0.15);
}
.page-products__card--primary {
  border-left: 4px solid var(--color-accent, #FF6B35);
}
.page-products__card--secondary {
  border-left: 4px solid var(--color-glow, #00BCD4);
}
.page-products__card__icon {
  margin-bottom: 1rem;
  flex-shrink: 0;
}
.page-products__card__title {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 0.5rem;
  color: var(--color-text, #F5F7FA);
}
.page-products__card__desc {
  font-size: 0.95rem;
  color: var(--color-text-muted, #8C9EAB);
  margin: 0 0 0.75rem;
  flex: 1;
  line-height: 1.7;
}
.page-products__card__version {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent, #FF6B35);
  background: rgba(255, 107, 53, 0.12);
  padding: 0.2rem 0.6rem;
  margin-bottom: 1rem;
}
.page-products__card__cta {
  align-self: stretch;
  text-align: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-accent, #FF6B35);
  border: none;
  transition: background var(--transition, 0.3s ease), transform 0.15s ease;
  cursor: pointer;
  display: inline-block;
}
.page-products__card__cta:hover {
  background: var(--color-accent-dark, #D84315);
  transform: scale(1.02);
}
.btn--outline {
  background: transparent;
  border: 2px solid var(--color-accent, #FF6B35);
  color: var(--color-accent, #FF6B35);
}
.btn--outline:hover {
  background: var(--color-accent, #FF6B35);
  color: #fff;
}

/* 版本对比标签页 */
.page-products__comparison {
  margin-bottom: var(--page-section-gap);
}
.page-products__tabs {
  margin-top: 0.5rem;
}
.page-products__tabs__nav {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid rgba(176, 190, 197, 0.2);
  margin-bottom: 1.25rem;
}
.page-products__tabs__btn {
  background: none;
  border: none;
  padding: 0.65rem 1.5rem;
  font-family: var(--font-body, 'Arial', 'Helvetica', sans-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted, #8C9EAB);
  cursor: pointer;
  position: relative;
  transition: color var(--transition, 0.3s ease);
  outline-offset: 2px;
}
.page-products__tabs__btn[aria-selected="true"] {
  color: var(--color-accent, #FF6B35);
}
.page-products__tabs__btn[aria-selected="true"]::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent, #FF6B35);
}
.page-products__tabs__btn:hover:not([aria-selected="true"]) {
  color: var(--color-text, #F5F7FA);
}
.page-products__tabs__panels {
  position: relative;
}
.page-products__tabs__panel {
  transition: opacity var(--transition, 0.3s ease);
}
.page-products__tabs__panel[hidden] {
  display: none;
}
.page-products__tabs__panel__inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-products__tabs__panel__image {
  flex: 0 0 auto;
  border: 1px solid rgba(176, 190, 197, 0.2);
  overflow: hidden;
}
.page-products__tabs__panel__image .page-products__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products__tabs__panel__content {
  flex: 1;
}
.page-products__tabs__panel__label {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.125rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent, #FF6B35);
  margin: 0 0 0.75rem;
  letter-spacing: 0.03em;
}
.page-products__feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-products__feature-list li {
  padding: 0.4rem 0;
  padding-left: 1.2rem;
  position: relative;
  color: var(--color-text, #F5F7FA);
  font-size: 0.95rem;
  line-height: 1.6;
}
.page-products__feature-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-glow, #00BCD4);
}

/* 跨设备同步 */
.page-products__sync {
  margin-bottom: var(--page-section-gap);
}
.page-products__sync__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-products__sync__image {
  border: 1px solid rgba(176, 190, 197, 0.2);
  overflow: hidden;
  background: var(--color-bg-elevated, #12183A);
}
.page-products__sync__image .page-products__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products__sync__steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-products__sync__step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: rgba(18, 24, 58, 0.6);
  border-left: 3px solid var(--color-glow, #00BCD4);
}
.page-products__sync__step__num {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent, #FF6B35);
  line-height: 1;
  flex-shrink: 0;
  width: var(--page-step-num-size);
  text-align: center;
}
.page-products__sync__step__text {
  flex: 1;
}
.page-products__sync__step__text strong {
  display: block;
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.05rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-text, #F5F7FA);
  margin-bottom: 0.2rem;
}
.page-products__sync__step__text p {
  margin: 0;
  color: var(--color-text-muted, #8C9EAB);
  font-size: 0.9rem;
}

/* 移动端注册三步 */
.page-products__register {
  margin-bottom: var(--page-section-gap);
}
.page-products__register__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-products__register__step {
  text-align: center;
}
.page-products__register__step__image {
  max-width: 220px;
  margin: 0 auto 0.75rem;
  border: 1px solid rgba(176, 190, 197, 0.2);
  overflow: hidden;
  background: var(--color-bg-elevated, #12183A);
}
.page-products__img--phone {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}
.page-products__register__step__desc {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.page-products__register__step__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent, #FF6B35);
  background: rgba(255, 107, 53, 0.12);
  padding: 0.2rem 0.8rem;
}
.page-products__register__step__desc p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text, #F5F7FA);
}

/* 所有应用列表 */
.page-products__all-apps {
  margin-bottom: var(--page-section-gap);
}
.page-products__all-apps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-products__app-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-bg-elevated, #12183A);
  transition: border-color var(--transition, 0.3s ease), box-shadow var(--transition, 0.3s ease);
}
.page-products__app-item:hover {
  border-color: var(--color-glow, #00BCD4) !important;
  box-shadow: 0 0 15px rgba(0, 188, 212, 0.12);
}
.page-products__app-item__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-products__img--icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}
.page-products__app-item__info {
  flex: 1;
  min-width: 0;
}
.page-products__app-item__name {
  font-family: var(--font-heading, 'Georgia', 'Times New Roman', serif);
  font-size: 1.125rem;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 0.15rem;
  color: var(--color-text, #F5F7FA);
}
.page-products__app-item__platform {
  font-size: 0.85rem;
  color: var(--color-text-muted, #8C9EAB);
  margin: 0 0 0.5rem;
}
.page-products__app-item__cta {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-accent, #FF6B35);
  border: none;
  transition: background var(--transition, 0.3s ease), transform 0.15s ease;
  cursor: pointer;
}
.page-products__app-item__cta:hover {
  background: var(--color-accent-dark, #D84315);
  transform: scale(1.02);
}
.page-products__app-item__cta.btn--outline {
  background: transparent;
  border: 2px solid var(--color-accent, #FF6B35);
  color: var(--color-accent, #FF6B35);
}
.page-products__app-item__cta.btn--outline:hover {
  background: var(--color-accent, #FF6B35);
  color: #fff;
}
.deco-border {
  border: 1px solid rgba(176, 190, 197, 0.25);
}

/* 底部支持链接 */
.page-products__support-links {
  text-align: center;
  padding: 1rem 0;
}
.page-products__support-links__text {
  font-size: 0.95rem;
  color: var(--color-text-muted, #8C9EAB);
  margin: 0;
}
.page-products__support-links__text a {
  color: var(--color-accent, #FF6B35);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition, 0.3s ease);
}
.page-products__support-links__text a:hover {
  color: var(--color-glow, #00BCD4);
  text-decoration: underline;
}

/* 图片通用 */
.page-products__img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* 桌面端 ≥ 768px */
@media (min-width: 768px) {
  .page-products {
    padding: 2rem 0 3rem;
  }
  .page-products__inner {
    padding: 0 2rem;
  }
  .page-products__hero__title {
    font-size: 3rem;
  }
  .page-products__hero__subtitle {
    font-size: 1.25rem;
  }
  .page-products__section-title {
    font-size: 2rem;
  }
  .page-products__entry-cards__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-products__card {
    padding: 2.5rem 2rem;
  }
  .page-products__tabs__panel__inner {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-products__tabs__panel__image {
    flex: 0 0 55%;
    max-width: 600px;
  }
  .page-products__sync__layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  .page-products__register__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  .page-products__register__step__image {
    max-width: 200px;
  }
  .page-products__all-apps__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  .page-products__app-item {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem 1rem;
  }
  .page-products__app-item__icon {
    margin-bottom: 0.5rem;
  }
}

/* 桌面大屏 ≥ 1024px */
@media (min-width: 1024px) {
  .page-products__hero__title {
    font-size: 3.5rem;
  }
  .page-products__all-apps__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-products__app-item {
    padding: 1.75rem 1.25rem;
  }
}