.page-products {
  --left-width: clamp(300px, 35vw, 440px);
  --card-gap: 24px;
  --card-radius: 16px;
  --glow-primary: rgba(0, 191, 255, 0.25);
  --glow-accent: rgba(255, 69, 0, 0.2);
}

.page-products__split {
  display: flex;
  flex-direction: column;
  min-height: 80vh;
  background-color: var(--bg-light, #f5f5f5);
}

/* ===== 左侧固定区 ===== */
.page-products__left {
  background: linear-gradient(145deg, var(--bg-dark, #1a1a2e) 0%, #0f1a2e 100%);
  color: var(--text-light, #f0f0f0);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
}

.page-products__left::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -30%;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
  pointer-events: none;
}

.page-products__left::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, var(--glow-accent) 0%, transparent 70%);
  pointer-events: none;
}

.page-products__left-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 360px;
  margin: 0 auto;
}

.page-products__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.page-products__brand-icon {
  flex-shrink: 0;
  display: flex;
}

.page-products__brand-name {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 2.2rem;
  font-weight: 700;
  font-style: italic;
  color: var(--primary, #00bfff);
  letter-spacing: 0.04em;
}

.page-products__tagline {
  font-family: var(--font-body, 'Open Sans', sans-serif);
  font-size: 1rem;
  color: var(--text-muted, #a0a0a0);
  margin-bottom: 28px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* 主视觉图 */
.page-products__hero-fig {
  margin: 0 0 28px;
  width: 100%;
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.page-products__hero-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* 功能索引 */
.page-products__index {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 20px;
  margin-bottom: 32px;
}

.page-products__index-item {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-muted, #a0a0a0);
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition, 0.25s ease);
}

.page-products__index-item:hover,
.page-products__index-item:focus-visible {
  color: var(--primary, #00bfff);
  border-color: var(--primary, #00bfff);
  background: rgba(0, 191, 255, 0.08);
  outline: none;
}

.page-products__index-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent, #ff4500);
  flex-shrink: 0;
}

.page-products__index-item:hover .page-products__index-dot {
  background: var(--primary, #00bfff);
}

.page-products__index-label {
  font-size: 0.8rem;
}

/* 下载主按钮 */
.page-products__download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 48px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.3rem;
  font-weight: 700;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  background: linear-gradient(135deg, var(--primary, #00bfff), var(--primary-dark, #009acd));
  border: none;
  border-radius: 50px;
  text-decoration: none;
  box-shadow: 0 6px 24px var(--glow-primary);
  transition: all var(--transition, 0.25s ease);
  cursor: pointer;
}

.page-products__download-btn:hover,
.page-products__download-btn:focus-visible {
  background: linear-gradient(135deg, var(--accent, #ff4500), var(--accent-dark, #dc143c));
  box-shadow: 0 8px 32px var(--glow-accent);
  transform: scale(1.04);
  outline: none;
  color: #fff;
}

.page-products__platform {
  margin-top: 14px;
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.8rem;
  color: var(--text-muted, #a0a0a0);
  letter-spacing: 0.08em;
}

/* ===== 右侧内容区 ===== */
.page-products__right {
  flex: 1;
  padding: 32px 24px;
  background: var(--bg-light, #f5f5f5);
}

/* 面包屑（共享类） */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.8rem;
  color: var(--text-muted, #a0a0a0);
  margin-bottom: 24px;
}

.breadcrumb__link {
  color: var(--primary, #00bfff);
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
  color: var(--accent, #ff4500);
  outline: none;
}

.breadcrumb__sep {
  color: var(--text-muted, #a0a0a0);
  user-select: none;
}

.breadcrumb__current {
  color: var(--text-secondary, #6b6b6b);
  font-weight: 600;
}

/* 页面标题 */
.page-products__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 3rem;
  font-weight: 700;
  font-style: italic;
  color: var(--bg-dark, #1a1a2e);
  line-height: 1.1;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.page-products__lead {
  font-family: var(--font-body, 'Open Sans', sans-serif);
  font-size: 1.1rem;
  color: var(--text-secondary, #6b6b6b);
  line-height: 1.6;
  margin: 0 0 40px;
  max-width: 640px;
}

/* 区域标题 */
.page-products__section-title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  font-style: italic;
  color: var(--bg-dark, #1a1a2e);
  margin: 0 0 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--primary, #00bfff);
  display: inline-block;
}

.page-products__section-title--accent {
  border-bottom-color: var(--accent, #ff4500);
}

/* 功能卡片网格 */
.page-products__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--card-gap, 24px);
  margin-bottom: 40px;
}

/* 卡片 */
.page-products__card {
  background: var(--surface, #ffffff);
  border-radius: var(--card-radius, 16px);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm, 0 2px 8px rgba(0,0,0,0.08));
  border: 1px solid var(--border-color, #dde0e4);
  transition: all var(--transition, 0.25s ease);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.page-products__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary, #00bfff), var(--accent, #ff4500));
  opacity: 0;
  transition: opacity var(--transition, 0.25s ease);
}

.page-products__card:hover,
.page-products__card:focus-within {
  box-shadow: var(--shadow-md, 0 6px 20px rgba(0,0,0,0.12));
  transform: translateY(-4px);
  border-color: var(--primary, #00bfff);
}

.page-products__card:hover::before,
.page-products__card:focus-within::before {
  opacity: 1;
}

.page-products__card-icon {
  margin: 0 0 18px;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md, 8px);
  overflow: hidden;
  background: var(--bg-light, #f5f5f5);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-products__card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-products__card-title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-dark, #1a1a2e);
  margin: 0 0 10px;
  line-height: 1.3;
}

.page-products__card-text {
  font-family: var(--font-body, 'Open Sans', sans-serif);
  font-size: 0.95rem;
  color: var(--text-secondary, #6b6b6b);
  line-height: 1.6;
  margin: 0 0 16px;
  flex: 1;
}

.page-products__card-link {
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.85rem;
  color: var(--primary, #00bfff);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition, 0.25s ease);
  align-self: flex-start;
}

.page-products__card-link:hover,
.page-products__card-link:focus-visible {
  color: var(--accent, #ff4500);
  outline: none;
}

/* 额外功能亮点 */
.page-products__extras {
  margin-bottom: 40px;
  padding: 20px 24px;
  background: rgba(0, 191, 255, 0.06);
  border-radius: var(--radius-md, 8px);
  border-left: 4px solid var(--primary, #00bfff);
}

.page-products__extra-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-body, 'Open Sans', sans-serif);
  font-size: 0.95rem;
  color: var(--text-primary, #222222);
  line-height: 1.5;
}

.page-products__extra-item svg {
  flex-shrink: 0;
}

/* 下载区 */
.page-products__download {
  text-align: center;
  padding: 40px 24px 32px;
  background: var(--surface, #ffffff);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-sm, 0 2px 8px rgba(0,0,0,0.08));
  border: 1px solid var(--border-color, #dde0e4);
}

.page-products__download-desc {
  font-family: var(--font-body, 'Open Sans', sans-serif);
  font-size: 1rem;
  color: var(--text-secondary, #6b6b6b);
  margin: 0 0 28px;
}

.page-products__store-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 28px;
}

.page-products__store-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
  text-decoration: none;
  border-radius: 50px;
  transition: all var(--transition, 0.25s ease);
  cursor: pointer;
  border: none;
}

.page-products__store-btn--apple {
  background: linear-gradient(135deg, #333, #555);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.page-products__store-btn--android {
  background: linear-gradient(135deg, var(--primary, #00bfff), var(--primary-dark, #009acd));
  box-shadow: 0 4px 16px var(--glow-primary);
}

.page-products__store-btn:hover,
.page-products__store-btn:focus-visible {
  transform: scale(1.06);
  box-shadow: 0 8px 28px rgba(0,0,0,0.2);
  outline: none;
  color: #fff;
}

.page-products__store-btn--apple:hover,
.page-products__store-btn--apple:focus-visible {
  background: linear-gradient(135deg, #555, #777);
}

.page-products__store-btn--android:hover,
.page-products__store-btn--android:focus-visible {
  background: linear-gradient(135deg, var(--accent, #ff4500), var(--accent-dark, #dc143c));
  box-shadow: 0 8px 28px var(--glow-accent);
}

.page-products__phone-fig {
  margin: 0 auto 20px;
  max-width: 200px;
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.page-products__phone-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 3;
}

.page-products__trust {
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.85rem;
  color: var(--text-muted, #a0a0a0);
  letter-spacing: 0.06em;
  margin: 0;
}

/* ===== 桌面端 (≥768px) ===== */
@media (min-width: 768px) {
  .page-products__split {
    flex-direction: row;
    align-items: stretch;
  }

  .page-products__left {
    width: var(--left-width, 35vw);
    min-width: 300px;
    max-width: 440px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 48px 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .page-products__left-inner {
    max-width: 320px;
  }

  .page-products__right {
    flex: 1;
    padding: 48px 48px 64px;
    overflow-y: auto;
  }

  .page-products__brand-name {
    font-size: 2.6rem;
  }

  .page-products__title {
    font-size: 3.8rem;
  }

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

  .page-products__card {
    padding: 32px 28px;
  }

  .page-products__download {
    padding: 48px 40px;
  }

  .page-products__store-group {
    gap: 20px;
  }

  .page-products__store-btn {
    padding: 16px 40px;
    font-size: 1.1rem;
  }

  .page-products__phone-fig {
    max-width: 180px;
  }
}

/* ===== 大桌面端 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-products__right {
    padding: 56px 64px 80px;
  }

  .page-products__title {
    font-size: 4.2rem;
  }

  .page-products__grid {
    gap: 28px;
  }

  .page-products__card {
    padding: 36px 32px;
  }

  .page-products__download {
    padding: 56px 48px;
  }
}

/* ===== 移动端微调 ===== */
@media (max-width: 767px) {
  .page-products__left {
    padding: 24px 20px;
  }

  .page-products__brand-name {
    font-size: 1.8rem;
  }

  .page-products__tagline {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .page-products__hero-fig {
    margin-bottom: 20px;
  }

  .page-products__index {
    gap: 8px 12px;
    margin-bottom: 24px;
  }

  .page-products__index-item {
    padding: 4px 10px;
    font-size: 0.75rem;
  }

  .page-products__download-btn {
    padding: 14px 36px;
    font-size: 1.1rem;
  }

  .page-products__right {
    padding: 24px 16px 40px;
  }

  .page-products__title {
    font-size: 2.2rem;
  }

  .page-products__lead {
    font-size: 0.95rem;
    margin-bottom: 28px;
  }

  .page-products__section-title {
    font-size: 1.3rem;
    margin-bottom: 18px;
  }

  .page-products__grid {
    gap: 16px;
    margin-bottom: 28px;
  }

  .page-products__card {
    padding: 20px 18px;
  }

  .page-products__card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 14px;
  }

  .page-products__card-title {
    font-size: 1.1rem;
  }

  .page-products__card-text {
    font-size: 0.9rem;
  }

  .page-products__extras {
    padding: 16px 18px;
    margin-bottom: 28px;
  }

  .page-products__extra-item {
    font-size: 0.9rem;
    gap: 10px;
  }

  .page-products__download {
    padding: 28px 16px 24px;
  }

  .page-products__store-btn {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  .page-products__phone-fig {
    max-width: 140px;
  }
}