.page-products {
  --card-bg: rgba(22, 27, 34, 0.85);
  --card-border-glow: 0 0 18px rgba(138, 43, 226, 0.25), 0 0 60px rgba(57, 255, 20, 0.06);
  --card-radius: 4px;
  --card-clip: polygon(0 0, 100% 0, 100% calc(100% - 24px), 0 100%);
  --transition-card: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* ───── 英雄区 ───── */
.page-products .products-hero {
  padding: 2rem 1.25rem 1.5rem;
  position: relative;
}

.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  margin-bottom: 1.75rem;
  color: var(--color-text-secondary, #8B949E);
}

.page-products .breadcrumb-link {
  color: var(--color-secondary, #8A2BE2);
  text-decoration: none;
  transition: opacity var(--transition, 0.3s ease);
}

.page-products .breadcrumb-link:hover {
  opacity: 0.75;
}

.page-products .breadcrumb-sep {
  color: var(--color-text-secondary, #8B949E);
}

.page-products .breadcrumb-current {
  color: var(--color-text, #E6EDF3);
  font-weight: 500;
}

.page-products .products-hero-title {
  font-family: var(--font-heading, 'Inter', system-ui, sans-serif);
  font-weight: 800;
  font-size: clamp(2.2rem, 6.5vw, 3.8rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text, #E6EDF3);
  margin-bottom: 0.75rem;
  line-height: 1.05;
  background: linear-gradient(135deg, #E6EDF3 30%, var(--color-secondary, #8A2BE2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-products .products-hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--color-text-secondary, #8B949E);
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: 1.5rem;
}

.page-products .products-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-products .products-hero-links .btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  border: 1.5px solid var(--color-secondary, #8A2BE2);
  color: var(--color-secondary, #8A2BE2);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  text-transform: uppercase;
  transition: all var(--transition, 0.3s ease);
  background: transparent;
}

.page-products .products-hero-links .btn-outline:hover {
  background: rgba(138, 43, 226, 0.12);
  box-shadow: 0 0 20px rgba(138, 43, 226, 0.18);
  border-color: var(--color-accent, #39FF14);
  color: var(--color-accent, #39FF14);
}

/* ───── 功能卡片 ───── */
.page-products .products-cards {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  padding: 0.5rem 1.25rem 3rem;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
}

.page-products .function-card {
  background: var(--card-bg);
  border: 2px solid rgba(138, 43, 226, 0.2);
  box-shadow: var(--shadow-strong, 0 8px 32px rgba(0,0,0,0.6)), var(--card-border-glow);
  clip-path: var(--card-clip);
  position: relative;
  transition: border-color var(--transition-card), box-shadow var(--transition-card);
  overflow: hidden;
  list-style: none;
}

.page-products .function-card[open] {
  border-color: rgba(57, 255, 20, 0.25);
  box-shadow: var(--shadow-strong, 0 8px 32px rgba(0,0,0,0.6)), 0 0 30px rgba(57, 255, 20, 0.08);
}

.page-products .function-card::-webkit-details-marker {
  display: none;
}

.page-products .function-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(165deg, rgba(138, 43, 226, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.page-products .card-summary {
  display: block;
  cursor: pointer;
  padding: 1.5rem 1.25rem 1.25rem;
  position: relative;
  z-index: 1;
  outline: none;
  user-select: none;
  -webkit-user-select: none;
}

.page-products .card-summary:focus-visible {
  outline: 2px solid var(--color-accent, #39FF14);
  outline-offset: -2px;
}

.page-products .card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-secondary, #8A2BE2);
  opacity: 0.35;
  margin-bottom: 0.5rem;
  transition: opacity var(--transition-card);
}

.page-products .function-card[open] .card-number {
  opacity: 0.7;
  color: var(--color-accent, #39FF14);
}

.page-products .card-preview {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-products .card-text {
  flex: 1 1 auto;
}

.page-products .card-heading {
  font-family: var(--font-heading, 'Inter', system-ui, sans-serif);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.5vw, 1.85rem);
  letter-spacing: 0.02em;
  color: var(--color-text, #E6EDF3);
  margin-bottom: 0.4rem;
  line-height: 1.2;
}

.page-products .card-brief {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #8B949E);
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* 数据条 */
.page-products .data-bar-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.page-products .data-bar {
  position: relative;
  height: 1.25rem;
  background: rgba(57, 255, 20, 0.06);
  border-right: 1.5px solid rgba(138, 43, 226, 0.25);
  overflow: hidden;
  transition: width 0.6s ease;
}

.page-products .data-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(138, 43, 226, 0.25), rgba(57, 255, 20, 0.12));
  transform-origin: left;
  animation: barPulse 2.6s ease-in-out infinite alternate;
}

@keyframes barPulse {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

.page-products .data-bar-label {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 0.5rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text, #E6EDF3);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* 图片区域 */
.page-products .card-visual {
  position: relative;
  flex: 0 0 auto;
  width: 100%;
  max-width: 100%;
}

.page-products .card-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(138, 43, 226, 0.12);
  transition: opacity var(--transition-card);
}

.page-products .function-card[open] .card-img {
  opacity: 0.85;
}

.page-products .visual-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-products .card-visual:hover .visual-overlay {
  opacity: 1;
}

.page-products .dot-label {
  position: absolute;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-accent, #39FF14);
  background: rgba(11, 26, 46, 0.8);
  padding: 0.1rem 0.35rem;
  border: 1px solid rgba(57, 255, 20, 0.3);
  transform: translate(-50%, -50%);
  white-space: nowrap;
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.15);
}

.page-products .expand-hint {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-secondary, #8A2BE2);
  border-bottom: 1px solid rgba(138, 43, 226, 0.25);
  transition: color var(--transition-card), border-color var(--transition-card);
}

.page-products .function-card[open] .expand-hint {
  color: var(--color-accent, #39FF14);
  border-bottom-color: rgba(57, 255, 20, 0.3);
}

/* 展开内容 */
.page-products .card-expanded {
  padding: 0 1.25rem 1.75rem;
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(138, 43, 226, 0.1);
  margin-top: 0.5rem;
}

.page-products .expanded-inner {
  max-width: 720px;
}

.page-products .expanded-text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #8B949E);
  line-height: 1.75;
  margin-bottom: 0.85rem;
}

.page-products .expanded-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-bg, #0D1117);
  background: var(--gradient-accent, linear-gradient(135deg, #8A2BE2, #39FF14));
  transition: box-shadow var(--transition, 0.3s ease);
}

.page-products .expanded-link:hover {
  box-shadow: 0 0 28px rgba(57, 255, 20, 0.35), 0 0 60px rgba(138, 43, 226, 0.15);
}

/* 时间轴模拟 */
.page-products .timeline-mock {
  position: absolute;
  bottom: 0.75rem;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(138, 43, 226, 0.2);
  pointer-events: none;
}

.page-products .tl-node {
  position: absolute;
  bottom: 0;
  transform: translateX(-50%);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.6rem;
  color: var(--color-accent, #39FF14);
  background: rgba(11, 26, 46, 0.75);
  padding: 0.1rem 0.3rem;
  border: 1px solid rgba(57, 255, 20, 0.15);
  white-space: nowrap;
}

/* ───── 品牌底部 ───── */
.page-products .products-brand {
  padding: 2.5rem 1.25rem 3rem;
  background: rgba(22, 27, 34, 0.5);
  border-top: 2px solid rgba(138, 43, 226, 0.08);
  margin-top: 1rem;
}

.page-products .brand-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.page-products .brand-visual-block {
  flex-shrink: 0;
}

.page-products .brand-logo-img {
  display: block;
  width: 100%;
  max-width: 200px;
  height: auto;
  border: 1px solid rgba(57, 255, 20, 0.08);
  opacity: 0.9;
}

.page-products .brand-text-block {
  max-width: 560px;
}

.page-products .brand-tagline {
  font-family: var(--font-heading, 'Inter', system-ui, sans-serif);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  color: var(--color-accent, #39FF14);
  margin-bottom: 0.65rem;
  text-transform: uppercase;
}

.page-products .brand-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B949E);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.page-products .brand-contact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.8125rem;
}

.page-products .contact-label {
  color: var(--color-text-secondary, #8B949E);
}

.page-products .contact-value {
  color: var(--color-text, #E6EDF3);
  font-weight: 500;
}

.page-products .contact-value a {
  color: var(--color-secondary, #8A2BE2);
  text-decoration: none;
}

.page-products .contact-value a:hover {
  text-decoration: underline;
}

/* ───── 桌面端 ≥768px ───── */
@media (min-width: 768px) {
  .page-products .products-hero {
    padding: 3rem 2.5rem 2rem;
  }

  .page-products .products-cards {
    padding: 1rem 2.5rem 4rem;
    gap: 2.25rem;
  }

  .page-products .card-summary {
    padding: 2rem 2rem 1.5rem;
  }

  .page-products .card-preview {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }

  .page-products .card-text {
    flex: 1 1 45%;
  }

  .page-products .card-visual {
    flex: 1 1 50%;
    max-width: 55%;
  }

  .page-products .card-number {
    font-size: 3rem;
  }

  .page-products .card-expanded {
    padding: 0 2rem 2rem;
  }

  .page-products .products-brand {
    padding: 3.5rem 2.5rem 4rem;
  }

  .page-products .brand-inner {
    flex-direction: row;
    text-align: left;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
  }

  .page-products .brand-logo-img {
    max-width: 260px;
  }

  .page-products .brand-contact {
    flex-direction: row;
    gap: 1.5rem;
  }
}

/* ───── 桌面端 ≥1024px ───── */
@media (min-width: 1024px) {
  .page-products .products-hero {
    padding: 4rem 3rem 2.5rem;
    max-width: var(--max-width, 1280px);
    margin: 0 auto;
  }

  .page-products .products-hero-title {
    font-size: clamp(3rem, 5vw, 4.2rem);
  }

  .page-products .products-cards {
    padding: 1.5rem 3rem 5rem;
    gap: 2.75rem;
  }

  .page-products .card-summary {
    padding: 2.5rem 2.5rem 1.75rem;
  }

  .page-products .card-number {
    font-size: 3.6rem;
  }

  .page-products .card-expanded {
    padding: 0 2.5rem 2.5rem;
  }

  .page-products .expanded-text {
    font-size: 1rem;
  }

  .page-products .data-bar {
    height: 1.4rem;
  }

  .page-products .products-brand {
    padding: 4rem 3rem 5rem;
  }
}

/* ───── 桌面端 ≥1400px ───── */
@media (min-width: 1400px) {
  .page-products .products-hero {
    padding: 5rem 4rem 3rem;
  }

  .page-products .products-cards {
    padding: 2rem 4rem 6rem;
  }

  .page-products .card-summary {
    padding: 3rem 3rem 2rem;
  }

  .page-products .card-expanded {
    padding: 0 3rem 3rem;
  }
}