.page-products {
  --products-accent-green: #2ECC71;
  --products-accent-orange: #E67E22;
  --products-accent-blue: #2980B9;
  --products-card-bg: #2C2C2C;
  --products-card-hover: #363636;
  --products-border: #404040;
  --products-text-muted: #B0B0B0;
  --products-radius: 12px;
  --products-transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  color: var(--text-primary);
  background: var(--bg-dark);
}

/* ─── 面包屑 ─── */
.page-products__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  font-family: var(--font-body);
}
.page-products__breadcrumb-link {
  color: var(--products-accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-products__breadcrumb-link:hover,
.page-products__breadcrumb-link:focus-visible {
  color: var(--products-accent-green);
  outline: none;
}
.page-products__breadcrumb-sep {
  color: var(--text-muted);
  user-select: none;
}
.page-products__breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ─── 首屏 Hero ─── */
.page-products__hero {
  padding: 2rem 0 0 0;
  position: relative;
  overflow: hidden;
}
.page-products__hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle at 70% 30%, rgba(46, 204, 113, 0.07) 0%, transparent 70%);
  pointer-events: none;
}
.page-products__hero-inner {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  align-items: center;
}
.page-products__hero-content {
  flex: 1 1 55%;
  max-width: 680px;
}
.page-products__hero-title {
  margin: 0 0 1rem 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-products__hero-accent {
  color: var(--products-accent-green);
  display: inline-block;
  position: relative;
}
.page-products__hero-accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0.05em;
  width: 100%;
  height: 0.15em;
  background: var(--products-accent-green);
  opacity: 0.35;
}
.page-products__hero-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 0 2rem 0;
  max-width: 560px;
}
.page-products__download-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-products__download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: transform var(--products-transition), box-shadow var(--products-transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}
.page-products__download-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.page-products__download-btn:hover,
.page-products__download-btn:focus-visible {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}
.page-products__download-btn:active {
  transform: translateY(0) scale(0.98);
}
.page-products__download-btn--ios {
  background: var(--products-accent-green);
  color: #1A1A1A;
}
.page-products__download-btn--ios:hover,
.page-products__download-btn--ios:focus-visible {
  background: #27ae60;
  box-shadow: 0 12px 32px rgba(46, 204, 113, 0.3);
}
.page-products__download-btn--android {
  background: var(--products-accent-orange);
  color: #1A1A1A;
}
.page-products__download-btn--android:hover,
.page-products__download-btn--android:focus-visible {
  background: #d35400;
  box-shadow: 0 12px 32px rgba(230, 126, 34, 0.3);
}
.page-products__download-btn-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
}
.page-products__download-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}
.page-products__download-btn-label {
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.3;
}
.page-products__download-btn-sub {
  font-weight: 400;
  font-size: 0.75rem;
  opacity: 0.75;
  line-height: 1.4;
}
.page-products__hero-tip {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.85rem;
}
.page-products__hero-visual {
  flex: 1 1 40%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  max-width: 400px;
}
.page-products__hero-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  aspect-ratio: 3 / 4;
}
.page-products__hero-float-tag {
  position: absolute;
  top: 8%;
  right: -2%;
  display: flex;
  gap: 0.4rem;
  padding: 0.5rem 0.75rem;
  background: rgba(26,26,26,0.8);
  border-radius: 20px;
  backdrop-filter: blur(6px);
  border: 1px solid var(--border-subtle);
}
.page-products__hero-float-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
  animation: page-products-pulse-dot 2s ease-in-out infinite;
}
.page-products__hero-float-dot:nth-child(2) { animation-delay: 0.4s; }
.page-products__hero-float-dot:nth-child(3) { animation-delay: 0.8s; }
@keyframes page-products-pulse-dot {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* ─── 功能亮点 ─── */
.page-products__features {
  padding: 5rem 0;
  position: relative;
}
.page-products__features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--products-accent-green), var(--products-accent-orange), transparent);
  opacity: 0.3;
}
.page-products__features-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.page-products__features-overline {
  display: inline-block;
  color: var(--products-accent-green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.page-products__features-title {
  margin: 0 0 0.75rem 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
}
.page-products__features-desc {
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.6;
}
.page-products__features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* ─── 功能卡片（翻转交互） ─── */
.page-products__feature-card {
  position: relative;
  background: var(--products-card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--products-transition), box-shadow var(--products-transition);
  cursor: default;
  perspective: 800px;
  min-height: 340px;
}
.page-products__feature-card:hover,
.page-products__feature-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.5);
}
.page-products__feature-card-front,
.page-products__feature-card-back {
  padding: 0;
  transition: opacity var(--products-transition), visibility var(--products-transition);
}
.page-products__feature-card-back {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--products-card-hover);
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
}
.page-products__feature-card:hover .page-products__feature-card-back,
.page-products__feature-card:focus-within .page-products__feature-card-back {
  opacity: 1;
  visibility: visible;
}
.page-products__feature-card:hover .page-products__feature-card-front,
.page-products__feature-card:focus-within .page-products__feature-card-front {
  opacity: 0;
  visibility: hidden;
}
.page-products__feature-img-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.page-products__feature-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-med);
  display: block;
}
.page-products__feature-card:hover .page-products__feature-img,
.page-products__feature-card:focus-within .page-products__feature-img {
  transform: scale(1.05);
}
.page-products__feature-content {
  padding: 1.25rem 1.5rem 1.5rem;
  position: relative;
}
.page-products__feature-number {
  position: absolute;
  top: 0.75rem;
  right: 1.25rem;
  font-family: var(--font-data);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--products-accent-green);
  opacity: 0.15;
  line-height: 1;
  user-select: none;
}
.page-products__feature-name {
  margin: 0 0 0.5rem 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.page-products__feature-brief {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
  margin: 0;
}
.page-products__feature-back-text {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.7;
  text-align: center;
  margin: 0;
  padding: 0.5rem;
}

/* ─── 使用说明 ─── */
.page-products__howto {
  padding: 4rem 0;
  background: var(--bg-card);
  position: relative;
}
.page-products__howto-inner {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  align-items: center;
}
.page-products__howto-text {
  flex: 1 1 55%;
  max-width: 600px;
}
.page-products__howto-overline {
  display: inline-block;
  color: var(--products-accent-orange);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.page-products__howto-title {
  margin: 0 0 2rem 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
}
.page-products__howto-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-products__howto-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.page-products__howto-num {
  flex-shrink: 0;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: var(--products-accent-green);
  color: #1A1A1A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1rem;
  margin-top: 0.1rem;
}
.page-products__howto-item-content {
  flex: 1;
}
.page-products__howto-item-title {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}
.page-products__howto-item-desc {
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
  margin: 0;
}
.page-products__howto-visual {
  flex: 1 1 40%;
  max-width: 420px;
  display: flex;
  justify-content: center;
}
.page-products__howto-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
}

/* ─── CTA 区域 ─── */
.page-products__cta {
  padding: 4rem 0;
}
.page-products__cta-card {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(46,204,113,0.08) 0%, rgba(230,126,34,0.05) 100%);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}
.page-products__cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(46,204,113,0.04) 0%, transparent 60%);
  pointer-events: none;
}
.page-products__cta-content {
  flex: 1;
  text-align: center;
  max-width: 600px;
}
.page-products__cta-title {
  margin: 0 0 0.75rem 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
}
.page-products__cta-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 2rem 0;
}
.page-products__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.page-products__cta-btn {
  padding: 0.9rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform var(--products-transition), box-shadow var(--products-transition);
  border: none;
  cursor: pointer;
}
.page-products__cta-btn.btn--primary {
  background: var(--products-accent-green);
  color: #1A1A1A;
}
.page-products__cta-btn.btn--primary:hover,
.page-products__cta-btn.btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(46,204,113,0.3);
}
.page-products__cta-btn.btn--accent {
  background: var(--products-accent-orange);
  color: #1A1A1A;
}
.page-products__cta-btn.btn--accent:hover,
.page-products__cta-btn.btn--accent:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230,126,34,0.3);
}
.page-products__cta-qr {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-products__cta-qr-placeholder {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  background: var(--products-card-bg);
  border: 2px dashed var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: border-color var(--transition-fast);
}
.page-products__cta-qr-placeholder:hover {
  border-color: var(--products-accent-green);
}
.page-products__cta-qr-icon {
  color: var(--text-muted);
  display: flex;
}
.page-products__cta-qr-label {
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

/* ─── 底部支持信息 ─── */
.page-products__support {
  padding: 2rem 0 4rem;
}
.page-products__support-inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.page-products__support-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0;
}
.page-products__support-link {
  color: var(--products-accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}
.page-products__support-link:hover,
.page-products__support-link:focus-visible {
  color: var(--products-accent-green);
  outline: none;
}
.page-products__support-email {
  color: var(--text-primary);
  font-family: var(--font-data);
  font-size: 0.875rem;
  white-space: nowrap;
}

/* ─── 桌面端 ─── */
@media (min-width: 768px) {
  .page-products__hero {
    padding: 3rem 0 0 0;
  }
  .page-products__hero-inner {
    flex-direction: row;
    gap: 3rem;
  }
  .page-products__download-actions {
    flex-direction: row;
  }
  .page-products__features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-products__howto-inner {
    flex-direction: row;
  }
  .page-products__cta-card {
    flex-direction: row;
    text-align: left;
    padding: 3rem 3.5rem;
  }
  .page-products__cta-content {
    text-align: left;
  }
  .page-products__cta-actions {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .page-products__hero-title {
    font-size: 3rem;
  }
  .page-products__features-grid {
    gap: 2rem;
  }
  .page-products__feature-number {
    font-size: 2.8rem;
  }
}
</style>
```
```plaintext
页面作用域 class 为 .page-products，所有组件限定其内，无全局样式泄漏。首屏以左右布局呈现下载入口与手机样机，按钮使用品牌绿与橙并带有悬停上浮动效。功能亮点区采用 2x2 翻转卡片，悬停时显示详细说明，兼顾信息密度与交互趣味。下方步骤区与 CTA 区域维持堆叠面板节奏，底部支持链接引导用户前往帮助中心。整体色彩以绿、橙、蓝三点缀色贯穿，预留了 5 张占位图满足视觉资产最低要求。