.nodes-mast {
  padding-top: clamp(60px, 8vw, 104px);
  padding-bottom: clamp(60px, 8vw, 104px);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.nodes-mast-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: clamp(40px, 7vw, 96px);
  align-items: center;
}

.nodes-mast-copy {
  max-width: 700px;
}

.nodes-mast-copy .lead {
  margin-bottom: 28px;
}

.nodes-mast-note {
  margin: 20px 0 0;
  color: var(--color-text-soft);
  font-size: 14px;
}

.nodes-route-board {
  position: relative;
  display: grid;
  overflow: hidden;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-lg);
  background: var(--color-ink);
  box-shadow: var(--shadow-lift);
  color: var(--color-dark-text);
}

.nodes-route-board::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-dark-dot) 1px, transparent 1px);
  background-size: 20px 20px;
  content: "";
  pointer-events: none;
}

.nodes-board-head,
.nodes-board-fact,
.nodes-board-regions,
.nodes-route-board > p {
  position: relative;
  z-index: 1;
}

.nodes-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-dark-line);
  color: var(--color-dark-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.nodes-board-state {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-pill);
  background: var(--color-ink-raised);
  color: var(--color-dark-text);
  white-space: nowrap;
}

.nodes-board-fact {
  display: grid;
  grid-template-columns: minmax(110px, .7fr) 1fr;
  gap: 18px;
  align-items: baseline;
  padding: 24px;
  border-bottom: 1px solid var(--color-dark-line);
}

.nodes-board-fact:nth-of-type(even) {
  background: var(--color-ink-raised);
}

.nodes-board-fact strong {
  color: var(--color-dark-text);
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
}

.nodes-board-fact span {
  color: var(--color-dark-soft);
  font-size: 13px;
}

.nodes-board-regions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 24px 10px;
}

.nodes-board-regions span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-pill);
  background: var(--color-ink-raised);
  color: var(--color-dark-text);
  font-size: 12px;
}

.nodes-route-board > p {
  margin: 0;
  padding: 14px 24px 24px;
  color: var(--color-dark-soft);
  font-size: 13px;
  line-height: 1.75;
}

.nodes-section-head {
  display: grid;
  grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 7vw, 96px);
  align-items: end;
  margin-bottom: 42px;
  padding-top: 18px;
  border-top: 3px solid var(--color-text);
}

.nodes-section-head h2,
.nodes-dark-head h2,
.nodes-method h2 {
  margin-bottom: 0;
}

.nodes-section-head > p {
  margin: 0;
  color: var(--color-text-soft);
  line-height: 1.85;
}

.nodes-index {
  margin-bottom: 12px;
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
}

.nodes-route-kind {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.nodes-dark-head {
  display: grid;
  max-width: 920px;
  margin-bottom: 46px;
}

.nodes-dark-head .nodes-index {
  color: var(--color-dark-soft);
}

.nodes-dark-head > p:last-child {
  max-width: 800px;
  margin: 10px 0 0;
  color: var(--color-dark-soft);
  font-size: 17px;
  line-height: 1.9;
}

.nodes-type-ledger {
  border-top: 1px solid var(--color-dark-line);
}

.nodes-type-row {
  display: grid;
  grid-template-columns: minmax(220px, .7fr) minmax(0, 1.3fr);
  gap: clamp(32px, 7vw, 100px);
  padding-top: clamp(34px, 5vw, 58px);
  padding-bottom: clamp(34px, 5vw, 58px);
  border-bottom: 1px solid var(--color-dark-line);
}

.nodes-type-row:nth-child(even) {
  background: var(--color-ink-raised);
  box-shadow: 50vw 0 0 var(--color-ink-raised), -50vw 0 0 var(--color-ink-raised);
}

.nodes-type-title {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.nodes-type-title h3 {
  margin: 2px 0 0;
  color: var(--color-dark-text);
}

.nodes-type-code {
  display: inline-flex;
  min-width: 58px;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  padding: 5px 9px;
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-pill);
  background: var(--color-signal);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .05em;
}

.nodes-type-copy p {
  color: var(--color-dark-soft);
  line-height: 1.95;
}

.nodes-type-copy p:last-child {
  margin-bottom: 0;
}

.nodes-use-list {
  display: grid;
  border-top: 1px solid var(--color-line);
}

.nodes-use-item {
  display: grid;
  grid-template-columns: minmax(190px, .55fr) minmax(0, 1.45fr);
  gap: clamp(28px, 6vw, 88px);
  padding-top: 38px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-line);
}

.nodes-use-item:nth-child(even) {
  background: var(--color-surface);
  box-shadow: 50vw 0 0 var(--color-surface), -50vw 0 0 var(--color-surface);
}

.nodes-use-label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.nodes-use-label span {
  display: inline-flex;
  min-width: 50px;
  min-height: 28px;
  align-items: center;
  justify-content: center;
  padding: 5px 8px;
  border: 1px solid var(--color-text);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
}

.nodes-use-label h3 {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 30px);
}

.nodes-use-item p {
  color: var(--color-text-soft);
  line-height: 1.9;
}

.nodes-use-item p:last-child {
  margin-bottom: 0;
}

.nodes-method {
  border-top: 1px solid var(--color-dark-line);
  border-bottom: 1px solid var(--color-dark-line);
  background: var(--color-ink);
  color: var(--color-dark-text);
}

.nodes-method h2 {
  color: var(--color-dark-text);
}

.nodes-method .lead {
  margin: 18px 0 0;
  color: var(--color-dark-soft);
}

.nodes-method .nodes-index {
  color: var(--color-dark-soft);
}

.nodes-method-grid {
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr);
  gap: clamp(44px, 8vw, 112px);
  align-items: start;
}

.nodes-checklist {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: nodes-check;
}

.nodes-checklist li {
  position: relative;
  min-height: 92px;
  padding: 22px 0 22px 62px;
  border-bottom: 1px solid var(--color-dark-line);
  counter-increment: nodes-check;
}

.nodes-checklist li:first-child {
  border-top: 1px solid var(--color-dark-line);
}

.nodes-checklist li::before {
  position: absolute;
  top: 22px;
  left: 0;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-signal);
  color: var(--color-text);
  content: counter(nodes-check);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.nodes-checklist strong {
  display: block;
  margin-bottom: 5px;
  color: var(--color-dark-text);
  font-size: 17px;
}

.nodes-checklist p {
  margin: 0;
  color: var(--color-dark-soft);
  line-height: 1.8;
}

.nodes-region-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
}

.nodes-region-wall article {
  min-height: 280px;
  padding: 28px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.nodes-region-wall article:nth-child(even) {
  background: var(--color-surface);
}

.nodes-region-code {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  margin-bottom: 48px;
  padding: 5px 10px;
  border: 1px solid var(--color-text);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
}

.nodes-region-wall h3 {
  margin-bottom: 12px;
}

.nodes-region-wall p {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.85;
}

.nodes-final-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  margin-top: 56px;
  padding: clamp(30px, 5vw, 52px);
  border-radius: var(--radius-lg);
  background: var(--color-ink);
  color: var(--color-dark-text);
}

.nodes-final-panel h2 {
  margin-bottom: 8px;
  color: var(--color-dark-text);
  font-size: clamp(28px, 3.5vw, 42px);
}

.nodes-final-panel p {
  margin: 0;
  color: var(--color-dark-soft);
}

.nodes-final-secondary {
  border-color: var(--color-dark-text);
  background: var(--color-ink);
  color: var(--color-dark-text);
}

.nodes-final-secondary:hover {
  background: var(--color-ink-raised);
}

@media (max-width: 1000px) {
  .nodes-mast-grid,
  .nodes-method-grid {
    grid-template-columns: 1fr;
  }

  .nodes-route-board {
    width: min(100%, 680px);
  }

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

@media (max-width: 768px) {
  .nodes-section-head,
  .nodes-type-row,
  .nodes-use-item,
  .nodes-final-panel {
    grid-template-columns: 1fr;
  }

  .nodes-section-head {
    align-items: start;
  }

  .nodes-type-row,
  .nodes-use-item {
    gap: 22px;
  }

  .nodes-type-row:nth-child(even),
  .nodes-use-item:nth-child(even) {
    box-shadow: none;
  }

  .nodes-final-panel {
    align-items: start;
  }
}

@media (max-width: 640px) {
  .nodes-mast {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .nodes-mast-grid {
    gap: 34px;
  }

  .nodes-board-head,
  .nodes-board-fact {
    padding-right: 18px;
    padding-left: 18px;
  }

  .nodes-board-fact {
    grid-template-columns: minmax(100px, .8fr) 1fr;
  }

  .nodes-board-regions {
    padding-right: 18px;
    padding-left: 18px;
  }

  .nodes-route-board > p {
    padding-right: 18px;
    padding-left: 18px;
  }

  .nodes-type-title,
  .nodes-use-label {
    flex-wrap: wrap;
  }

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

  .nodes-region-wall article {
    min-height: 0;
  }

  .nodes-region-code {
    margin-bottom: 28px;
  }

  .nodes-checklist li {
    padding-left: 54px;
  }

  .nodes-final-panel {
    padding: 28px 22px;
  }
}