.page-products {
  --node-bg: var(--bg-secondary);
  --node-border: var(--border-subtle);
  --node-radius: 4px;
  --connector-color: var(--brand-primary);
  --hero-min-height: 420px;
  display: block;
  width: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
}

/* ── 面包屑 ── */
.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-top: 24px;
  padding-bottom: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.page-products .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--brand-primary);
}
.page-products .breadcrumb-sep {
  color: var(--border-subtle);
  margin: 0 2px;
}
.page-products .breadcrumb [aria-current="page"] {
  color: var(--text-primary);
  font-weight: 700;
}

/* ── 首屏 ── */
.page-products .services-hero {
  position: relative;
  min-height: var(--hero-min-height);
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-bottom: 0;
  padding: 40px 0 60px;
}
.page-products .hero-dataflow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.page-products .hero-dataflow .df-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(229,57,53,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,57,53,0.08) 1px, transparent 1px);
  background-size: 48px 48px;
}
.page-products .df-bar {
  position: absolute;
  height: 6px;
  border-radius: 3px;
  background: var(--brand-primary);
  opacity: 0.25;
}
.page-products .df-bar-1 { width: 30%; top: 18%; left: 8%; height: 8px; opacity: 0.15; }
.page-products .df-bar-2 { width: 22%; top: 62%; right: 12%; height: 6px; opacity: 0.2; }
.page-products .df-bar-3 { width: 40%; bottom: 20%; left: 50%; height: 10px; opacity: 0.12; transform: translateX(-50%); }
.page-products .df-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand-secondary);
  opacity: 0.3;
}
.page-products .df-dot-1 { top: 28%; right: 18%; width: 14px; height: 14px; }
.page-products .df-dot-2 { top: 50%; left: 6%; width: 8px; height: 8px; }
.page-products .df-dot-3 { bottom: 30%; right: 8%; width: 12px; height: 12px; opacity: 0.2; background: var(--brand-primary); }
.page-products .df-line {
  position: absolute;
  height: 1px;
  background: var(--brand-secondary);
  opacity: 0.15;
  transform-origin: left center;
}
.page-products .df-line-1 { width: 18%; top: 40%; left: 12%; transform: rotate(-12deg); }
.page-products .df-line-2 { width: 14%; top: 72%; right: 20%; transform: rotate(8deg); left: auto; }

.page-products .hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}
.page-products .hero-content h1 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  margin: 0 0 12px;
  line-height: 1.15;
}
.page-products .hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto;
  letter-spacing: 0.02em;
}

/* ── 技能树容器 ── */
.page-products .services-tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 16px 60px;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* ── 服务节点 ── */
.page-products .service-node {
  display: flex;
  flex-direction: column;
  width: 100%;
  background: var(--node-bg);
  border: 1px solid var(--node-border);
  border-radius: var(--node-radius);
  position: relative;
  transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
  overflow: hidden;
}
.page-products .service-node:hover,
.page-products .service-node:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 1px rgba(229,57,53,0.3), var(--shadow);
}
.page-products .service-node::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(145deg, transparent 48%, rgba(229,57,53,0.06) 48%, rgba(229,57,53,0.06) 52%, transparent 52%);
  z-index: 0;
}
.page-products .node-wide::before {
  background: linear-gradient(145deg, transparent 46%, rgba(229,57,53,0.08) 46%, rgba(229,57,53,0.08) 54%, transparent 54%);
}
.page-products .node-narrow::before {
  background: linear-gradient(215deg, transparent 46%, rgba(30,136,229,0.06) 46%, rgba(30,136,229,0.06) 54%, transparent 54%);
}
.page-products .node-visual,
.page-products .node-content {
  position: relative;
  z-index: 1;
}
.page-products .node-visual {
  width: 100%;
  background: var(--bg-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.page-products .node-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: attr(width) / attr(height);
}
.page-products .visual-duo {
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}
.page-products .visual-duo img {
  border-radius: 2px;
  border: 1px solid var(--border-subtle);
}
.page-products .node-content {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-products .node-step {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--brand-primary);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  display: inline-block;
}
.page-products .node-content h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 0 0 10px;
  line-height: 1.2;
}
.page-products .node-content p {
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 18px;
  max-width: 520px;
}
.page-products .node-content .btn-outline {
  align-self: flex-start;
}

/* ── 连接线 ── */
.page-products .tree-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 0;
  width: 100%;
  flex-shrink: 0;
}
.page-products .connector-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--connector-color);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
}
.page-products .connector-line {
  display: block;
  width: 2px;
  min-height: 24px;
  flex: 1 1 32px;
  background: repeating-linear-gradient(
    to bottom,
    var(--connector-color) 0,
    var(--connector-color) 6px,
    transparent 6px,
    transparent 12px
  );
  opacity: 0.6;
  margin: 4px 0;
}
.page-products .service-node:hover ~ .tree-connector .connector-dot,
.page-products .tree-connector:hover .connector-dot {
  transform: scale(1.35);
  box-shadow: 0 0 12px rgba(229,57,53,0.5);
}
.page-products .service-node:hover ~ .tree-connector .connector-line,
.page-products .tree-connector:hover .connector-line {
  opacity: 1;
}

/* ── 底部 CTA ── */
.page-products .services-cta {
  background: var(--bg-accent);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  padding: 56px 16px 64px;
}
.page-products .cta-inner {
  max-width: 640px;
  margin: 0 auto;
}
.page-products .services-cta h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 0 0 10px;
  letter-spacing: 0.03em;
}
.page-products .services-cta p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin: 0 0 28px;
}
.page-products .services-cta .btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: var(--brand-primary);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 1.05rem;
  border: none;
  border-radius: 2px;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
}
.page-products .services-cta .btn-primary:hover,
.page-products .services-cta .btn-primary:focus-visible {
  background: #c62828;
  box-shadow: 0 0 24px rgba(229,57,53,0.35);
}

/* ── 桌面端 ── */
@media (min-width: 768px) {
  .page-products .services-hero {
    min-height: 460px;
    padding: 60px 0 80px;
  }
  .page-products .hero-content h1 {
    font-size: 3.8rem;
  }
  .page-products .hero-subtitle {
    font-size: 1.25rem;
  }
  .page-products .services-tree {
    padding: 20px 32px 80px;
  }
  .page-products .service-node {
    flex-direction: row;
    align-items: stretch;
    width: 100%;
  }
  .page-products .node-wide .node-visual {
    width: 55%;
    max-width: 640px;
    flex-shrink: 0;
  }
  .page-products .node-wide .node-content {
    padding: 36px 32px;
    flex: 1;
  }
  .page-products .node-narrow .node-visual {
    width: 45%;
    max-width: 480px;
    flex-shrink: 0;
  }
  .page-products .node-narrow .node-content {
    padding: 28px 24px;
    flex: 1;
  }
  .page-products .node-wide .node-content h2 {
    font-size: 2rem;
  }
  .page-products .node-narrow .node-content h2 {
    font-size: 1.5rem;
  }
  .page-products .visual-duo {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 16px;
  }
  .page-products .visual-duo img {
    flex: 1 1 45%;
    min-width: 0;
  }
  .page-products .tree-connector {
    padding: 16px 0;
  }
  .page-products .connector-line {
    min-height: 36px;
    flex: 1 1 48px;
  }
  .page-products .services-cta {
    padding: 72px 32px 80px;
  }
  .page-products .services-cta h2 {
    font-size: 2.4rem;
  }
}

/* ── 大桌面 ── */
@media (min-width: 1024px) {
  .page-products .hero-content h1 {
    font-size: 4.4rem;
  }
  .page-products .node-wide .node-content {
    padding: 48px 44px;
  }
  .page-products .node-narrow .node-content {
    padding: 36px 32px;
  }
  .page-products .node-content p {
    font-size: 1.05rem;
  }
}