.nodes-hero {
  position: relative;
  overflow-x: clip;
  padding-top: calc(var(--section-space) * .78);
  padding-bottom: calc(var(--section-space) * .78);
  border-bottom: 1px solid var(--color-border);
}

.nodes-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(color-mix(in srgb, var(--color-text-muted) 12%, transparent) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to bottom, var(--color-shadow-heavy), transparent);
  pointer-events: none;
  content: "";
}

.nodes-hero::after {
  position: absolute;
  top: -180px;
  right: -140px;
  width: 680px;
  height: 560px;
  background: radial-gradient(closest-side, var(--color-accent-12), transparent);
  pointer-events: none;
  content: "";
}

.nodes-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .8fr);
  align-items: center;
  gap: 64px;
}

.nodes-hero-copy {
  max-width: 720px;
}

.nodes-hero-copy h1 {
  max-width: 760px;
}

.nodes-lead {
  max-width: 62ch;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.nodes-lead strong {
  color: var(--color-text);
  font-family: var(--font-mono);
}

.nodes-index {
  overflow: hidden;
}

.nodes-index-head {
  display: flex;
  min-height: 50px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 11px 16px;
  background: color-mix(in srgb, var(--color-panel-raised) 54%, var(--color-panel));
  border-bottom: 1px solid var(--color-border);
}

.nodes-index-head .mono {
  color: var(--color-text-muted);
  font-size: 12px;
  letter-spacing: .08em;
}

.nodes-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--color-border);
}

.nodes-facts > div {
  display: flex;
  min-height: 112px;
  flex-direction: column;
  justify-content: center;
  padding: 18px;
  border-right: 1px solid var(--color-border);
}

.nodes-facts > div:last-child {
  border-right: 0;
}

.nodes-facts strong {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 800;
  line-height: 1.2;
}

.nodes-facts span {
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.nodes-region-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.nodes-region-list a {
  display: flex;
  min-height: 66px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 17px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nodes-region-list a:nth-child(even) {
  border-right: 0;
}

.nodes-region-list a:hover {
  color: var(--color-accent);
  background: var(--color-accent-08);
}

.nodes-region-list span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
}

.nodes-region-list strong {
  font-size: 15px;
}

.nodes-index-note {
  margin: 0;
  padding: 16px 18px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.nodes-table-note {
  max-width: 940px;
  margin: 20px 0 0;
  color: var(--color-text-muted);
}

.nodes-type-section {
  background: color-mix(in srgb, var(--color-panel) 34%, var(--color-bg));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.nodes-type-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.nodes-type-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 26px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
}

.nodes-type-card:first-child {
  background: linear-gradient(180deg, var(--color-accent-08), var(--color-panel));
  border-color: color-mix(in srgb, var(--color-accent) 52%, var(--color-border));
}

.nodes-type-head {
  display: flex;
  min-height: 30px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

.nodes-type-code,
.nodes-use-label,
.nodes-decision-step {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
}

.nodes-type-card p {
  color: var(--color-text-muted);
}

.nodes-type-card .feature-facts {
  margin-top: auto;
  padding-top: 8px;
}

.nodes-use-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.nodes-use-card {
  min-width: 0;
  padding: 22px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-chip);
}

.nodes-use-card:nth-child(1),
.nodes-use-card:nth-child(2) {
  grid-column: span 3;
}

.nodes-use-card:nth-child(3),
.nodes-use-card:nth-child(4),
.nodes-use-card:nth-child(5) {
  grid-column: span 2;
}

.nodes-use-card:hover {
  border-color: var(--color-accent);
}

.nodes-use-label {
  display: block;
  margin-bottom: 14px;
}

.nodes-use-card h3 {
  font-size: 22px;
}

.nodes-use-card p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.nodes-decision {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  margin-top: 24px;
  padding: 25px;
}

.nodes-decision > svg {
  color: var(--color-accent);
}

.nodes-decision > div {
  min-width: 0;
}

.nodes-decision strong {
  display: block;
  margin-top: 5px;
  font-size: 17px;
}

.nodes-decision p {
  margin: 7px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.nodes-coverage-section {
  background: color-mix(in srgb, var(--color-panel-raised) 16%, var(--color-bg));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.nodes-coverage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr);
  align-items: center;
  gap: 68px;
}

.nodes-coverage-layout p {
  color: var(--color-text-muted);
}

.nodes-region-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  padding: 20px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
}

.nodes-region-wall span {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 8px;
  color: var(--color-text-muted);
  background: var(--color-panel-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: center;
}

.nodes-region-wall span:nth-child(3n + 1) {
  color: var(--color-accent);
  background: var(--color-accent-08);
  border-color: color-mix(in srgb, var(--color-accent) 42%, var(--color-border));
}

.nodes-operations {
  display: grid;
  grid-template-columns: minmax(240px, .65fr) minmax(0, 1.35fr);
  gap: 48px;
  padding: 34px;
}

.nodes-operations h2 {
  margin-bottom: 0;
  font-size: clamp(29px, 3vw, 40px);
}

.nodes-operations-copy p {
  color: var(--color-text-muted);
}

.nodes-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (max-width: 1100px) {
  .nodes-hero-layout,
  .nodes-coverage-layout {
    grid-template-columns: 1fr;
  }

  .nodes-hero-copy {
    max-width: none;
  }

  .nodes-index {
    max-width: 760px;
  }

  .nodes-type-grid {
    grid-template-columns: 1fr;
  }

  .nodes-type-card {
    min-height: 0;
  }
}

@media (max-width: 820px) {
  .nodes-use-grid {
    grid-template-columns: 1fr;
  }

  .nodes-use-card:nth-child(1),
  .nodes-use-card:nth-child(2),
  .nodes-use-card:nth-child(3),
  .nodes-use-card:nth-child(4),
  .nodes-use-card:nth-child(5) {
    grid-column: auto;
  }

  .nodes-decision {
    grid-template-columns: 1fr;
  }

  .nodes-decision > svg {
    transform: rotate(90deg);
  }

  .nodes-operations {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 640px) {
  .nodes-hero {
    padding-top: calc(var(--section-space) * .68);
    padding-bottom: calc(var(--section-space) * .68);
  }

  .nodes-hero-layout {
    gap: 38px;
  }

  .nodes-lead {
    font-size: 16px;
  }

  .nodes-facts {
    grid-template-columns: 1fr;
  }

  .nodes-facts > div {
    min-height: 76px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nodes-facts > div:last-child {
    border-bottom: 0;
  }

  .nodes-region-list {
    grid-template-columns: 1fr;
  }

  .nodes-region-list a {
    border-right: 0;
  }

  .nodes-region-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 14px;
  }

  .nodes-type-card,
  .nodes-use-card,
  .nodes-decision,
  .nodes-operations {
    padding: 20px;
  }

  .nodes-link-row {
    flex-direction: column;
  }

  .nodes-link-row .btn-primary,
  .nodes-link-row .btn-secondary {
    width: 100%;
  }
}