.page-products {
  --card-radius: 12px;
  --card-depth: 0.35;
  --hero-bg: #1A2A3A;
  --update-bg: #FF6B35;
  --sync-bg: #1A2A3A;
  --card-front-bg: #FFFFFF;
  --card-back-bg: #F5F5F5;
  --shadow-sm: 0 2px 8px rgba(26,42,58,0.08);
  --shadow-md: 0 8px 24px rgba(26,42,58,0.12);
  --shadow-lg: 0 16px 48px rgba(26,42,58,0.16);
  --transition-flip: 0.6s cubic-bezier(0.23,1,0.32,1);
  --transition-slide: 0.4s cubic-bezier(0.23,1,0.32,1);
}

/* ── 面包屑 ── */
.page-products .breadcrumbs {
  padding-top: 1.25rem;
  padding-bottom: 0.75rem;
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
}
.page-products .breadcrumbs a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-products .breadcrumbs a:hover {
  opacity: 0.75;
}
.page-products .breadcrumbs span[aria-current] {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── 首屏框景 ── */
.page-products .platform-hero {
  background: var(--hero-bg);
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
}
.page-products .platform-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 35%;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(255,107,53,0.15) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}
.page-products .hero-frame {
  position: relative;
  padding: 2.5rem 1rem;
}
.page-products .frame-marks {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.page-products .mark {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--accent);
  border-style: solid;
}
.page-products .mark--tl {
  top: 12px; left: 12px;
  border-width: 3px 0 0 3px;
}
.page-products .mark--tr {
  top: 12px; right: 12px;
  border-width: 3px 3px 0 0;
}
.page-products .mark--bl {
  bottom: 12px; left: 12px;
  border-width: 0 0 3px 3px;
}
.page-products .mark--br {
  bottom: 12px; right: 12px;
  border-width: 0 3px 3px 0;
}
.page-products .tick {
  position: absolute;
  background: rgba(255,107,53,0.3);
}
.page-products .tick--top {
  top: 6px; left: 25%; right: 25%; height: 2px;
}
.page-products .tick--bottom {
  bottom: 6px; left: 25%; right: 25%; height: 2px;
}
.page-products .tick--right {
  right: 6px; top: 25%; bottom: 25%; width: 2px;
}
.page-products .tick--left {
  left: 6px; top: 25%; bottom: 25%; width: 2px;
}
.page-products .hero-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}
.page-products .hero-content {
  text-align: center;
  color: #fff;
  z-index: 1;
}
.page-products .hero-content h1 {
  font-family: var(--font-headings);
  font-size: clamp(2rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-products .hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.5vw, 1.375rem);
  color: var(--accent);
  font-weight: 500;
  margin: 0 0 0.75rem;
  letter-spacing: 0.04em;
}
.page-products .hero-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  line-height: 1.6;
  margin: 0 auto;
}
.page-products .hero-image {
  width: 100%;
  max-width: 560px;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  z-index: 1;
  transform: translateY(0);
  transition: transform var(--transition-slide);
}
.page-products .hero-image:hover {
  transform: translateY(-4px);
}
.page-products .hero-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ── 核心功能 ── */
.page-products .core-features {
  background: var(--bg);
  padding: 3.5rem 0 5rem;
}
.page-products .section-header {
  margin-bottom: 2.5rem;
}
.page-products .section-label {
  font-family: var(--font-headings);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 0.5rem;
  position: relative;
  display: inline-block;
}
.page-products .section-label::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 48px;
  height: 4px;
  background: var(--accent);
}
.page-products .section-desc {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.6;
  margin: 0.75rem 0 0;
}
.page-products .features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  perspective: 1200px;
}

/* ── 卡片翻转 ── */
.page-products .feature-card {
  position: relative;
  min-height: 360px;
  cursor: pointer;
  perspective: 1200px;
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-slide);
}
.page-products .feature-card:hover,
.page-products .feature-card:focus-within {
  box-shadow: var(--shadow-md);
  z-index: 2;
}
.page-products .card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 360px;
  transition: transform var(--transition-flip);
  transform-style: preserve-3d;
  border-radius: var(--card-radius);
}
.page-products .feature-card:hover .card-inner,
.page-products .feature-card:focus-within .card-inner {
  transform: rotateY(180deg);
}
.page-products .card-front,
.page-products .card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--card-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}
.page-products .card-front {
  background: var(--card-front-bg);
  z-index: 2;
}
.page-products .card-back {
  background: var(--card-back-bg);
  transform: rotateY(180deg);
  z-index: 1;
  justify-content: flex-start;
  padding: 1.75rem 1.5rem;
}
.page-products .card-icon {
  font-size: 2.2rem;
  margin-bottom: 0.35rem;
  line-height: 1;
}
.page-products .card-front h3 {
  font-family: var(--font-headings);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}
.page-products .card-back h3 {
  font-family: var(--font-headings);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}
.page-products .card-image {
  border-radius: 8px;
  overflow: hidden;
  flex: 1;
  min-height: 120px;
}
.page-products .card-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products .card-tag {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(255,107,53,0.1);
  display: inline-block;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  margin-top: 0.75rem;
  align-self: flex-start;
}
.page-products .card-back p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 1rem;
}
.page-products .feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}
.page-products .feature-list li {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-primary);
  padding: 0.35rem 0 0.35rem 1.25rem;
  position: relative;
  line-height: 1.5;
}
.page-products .feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 1px;
  transform: rotate(45deg);
}

/* 背面迷你柱状图 */
.page-products .chart-mini {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 80px;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
.page-products .chart-bar {
  flex: 1;
  background: var(--primary);
  height: var(--h, 50%);
  border-radius: 3px 3px 0 0;
  position: relative;
  transition: background 0.3s;
  min-height: 8px;
}
.page-products .chart-bar:hover {
  background: var(--accent);
}
.page-products .chart-val {
  position: absolute;
  top: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  opacity: 0;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.page-products .chart-bar:hover .chart-val {
  opacity: 1;
}

/* ── 数据更新 ── */
.page-products .data-update {
  background: var(--update-bg);
  padding: 3rem 0;
  position: relative;
  overflow: hidden;
}
.page-products .data-update::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  pointer-events: none;
}
.page-products .update-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
  position: relative;
  z-index: 1;
}
.page-products .update-visual {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: #fff;
}
.page-products .update-number {
  font-family: var(--font-headings);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1;
  text-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.page-products .update-unit {
  font-family: var(--font-body);
  font-size: 1.75rem;
  font-weight: 600;
  opacity: 0.85;
}
.page-products .update-text h2 {
  font-family: var(--font-headings);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.page-products .update-text p {
  font-family: var(--font-body);
  font-size: 1rem;
  color: rgba(255,255,255,0.92);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto;
}
.page-products .highlight {
  color: #fff;
  background: rgba(0,0,0,0.2);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
}

/* ── 兼容性 ── */
.page-products .compatibility {
  background: #fff;
  padding: 4rem 0;
}
.page-products .compat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
}
.page-products .compat-item {
  text-align: center;
}
.page-products .compat-item h3 {
  font-family: var(--font-headings);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin: 1rem 0 0.35rem;
  text-transform: uppercase;
}
.page-products .compat-item p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 320px;
  margin: 0 auto;
}
.page-products .compat-device {
  background: var(--bg);
  border-radius: var(--card-radius);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-slide), transform var(--transition-slide);
}
.page-products .compat-device:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.page-products .device-screen {
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}
.page-products .device-screen img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .compat-device--desktop .device-screen {
  aspect-ratio: 3/2;
}
.page-products .compat-device--mobile .device-screen {
  max-width: 240px;
  margin: 0 auto;
  aspect-ratio: 2/3;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* ── 平台同步 ── */
.page-products .sync-section {
  background: var(--sync-bg);
  padding: 3.5rem 0;
  position: relative;
  overflow: hidden;
}
.page-products .sync-section::before {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255,107,53,0.08);
  pointer-events: none;
}
.page-products .sync-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.page-products .sync-image {
  width: 100%;
  max-width: 600px;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0,0,0,0.3);
}
.page-products .sync-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-products .sync-text {
  text-align: center;
  color: #fff;
}
.page-products .sync-text h2 {
  font-family: var(--font-headings);
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.page-products .sync-text p {
  font-family: var(--font-body);
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto 1.5rem;
}
.page-products .sync-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: center;
}
.page-products .sync-features li {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
  padding-left: 1.5rem;
  position: relative;
}
.page-products .sync-features li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.65rem;
  top: 0.15rem;
}

/* ── CTA 区域 ── */
.page-products .platform-cta {
  background: var(--bg);
  padding: 2.5rem 0 4rem;
}
.page-products .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.page-products .cta-links .btn {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 2rem;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.25s, box-shadow 0.25s;
  display: inline-block;
}
.page-products .cta-links .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}
.page-products .cta-links .btn-primary {
  background: var(--primary);
  color: #fff;
}
.page-products .cta-links .btn-accent {
  background: var(--accent);
  color: #fff;
}

/* ── 响应式 ── */
@media (min-width: 640px) {
  .page-products .hero-frame {
    padding: 3rem 1.5rem;
  }
  .page-products .features-grid {
    gap: 1.75rem;
  }
  .page-products .compat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-products .sync-features {
    gap: 1rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-products .hero-layout {
    flex-direction: row;
    text-align: left;
    gap: 3rem;
  }
  .page-products .hero-content {
    flex: 1 1 45%;
    text-align: left;
  }
  .page-products .hero-desc {
    margin: 0;
  }
  .page-products .hero-image {
    flex: 1 1 50%;
    max-width: 580px;
  }
  .page-products .features-grid {
    grid-template-columns: 2fr 1fr;
    grid-auto-rows: auto;
  }
  .page-products .feature-card--large {
    grid-row: span 2;
  }
  .page-products .feature-card--large .card-inner {
    min-height: 520px;
  }
  .page-products .feature-card {
    min-height: 240px;
  }
  .page-products .card-inner {
    min-height: 240px;
  }
  .page-products .feature-card--large .card-inner {
    min-height: 520px;
  }
  .page-products .update-inner {
    flex-direction: row;
    text-align: left;
    gap: 3rem;
  }
  .page-products .update-visual {
    flex-shrink: 0;
  }
  .page-products .update-text p {
    margin: 0;
  }
  .page-products .sync-layout {
    flex-direction: row;
    text-align: left;
    gap: 3rem;
  }
  .page-products .sync-image {
    flex: 1 1 50%;
    max-width: 560px;
  }
  .page-products .sync-text {
    flex: 1 1 45%;
    text-align: left;
  }
  .page-products .sync-text p {
    margin: 0 0 1.5rem;
  }
  .page-products .sync-features {
    justify-content: flex-start;
  }
  .page-products .cta-links {
    gap: 1.25rem 2rem;
  }
}

@media (min-width: 1100px) {
  .page-products .hero-frame {
    padding: 4rem 2rem;
  }
  .page-products .core-features {
    padding: 5rem 0 6rem;
  }
  .page-products .compatibility {
    padding: 5rem 0;
  }
  .page-products .sync-section {
    padding: 4.5rem 0;
  }
  .page-products .compat-device--mobile .device-screen {
    max-width: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .card-inner {
    transition: none;
  }
  .page-products .feature-card:hover .card-inner,
  .page-products .feature-card:focus-within .card-inner {
    transform: none;
  }
  .page-products .card-back {
    opacity: 0;
    pointer-events: none;
  }
  .page-products .feature-card:hover .card-back,
  .page-products .feature-card:focus-within .card-back {
    opacity: 1;
    pointer-events: auto;
  }
  .page-products .hero-image,
  .page-products .compat-device,
  .page-products .cta-links .btn {
    transition: none;
  }
}

.page-products {
  --h: 1rem;
}