.nodes-hero {
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.nodes-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .82fr);
  gap: 64px;
  min-height: 680px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 64px;
}

.nodes-hero-copy h1 {
  max-width: 720px;
}

.nodes-hero-copy .lead {
  max-width: 680px;
  margin-bottom: 28px;
}

.nodes-hero-copy .button-row {
  margin-bottom: 30px;
}

.nodes-fact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.nodes-fact-line span {
  padding: 12px 18px;
  border-right: 1px solid var(--color-line);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.nodes-fact-line span:first-child {
  padding-left: 0;
}

.nodes-fact-line span:last-child {
  border-right: 0;
}

.route-index-board {
  overflow: hidden;
  border-radius: var(--radius-board);
  background: var(--color-route);
  box-shadow: var(--shadow-board);
  color: var(--color-white);
}

.route-index-strip {
  height: 4px;
  background: var(--color-accent);
}

.route-index-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px 16px;
  color: var(--color-white-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
}

.route-index-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-family: var(--font-body);
  letter-spacing: 0;
}

.route-index-state .status-dot {
  box-shadow: none;
}

.route-index-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 28px;
  gap: 18px;
  align-items: center;
  min-height: 104px;
  padding: 20px 28px;
  border-top: 1px solid var(--color-white-faint);
  transition: background-color var(--motion-fast) ease;
}

.route-index-row:hover {
  background: var(--color-white-hover);
}

.route-index-code {
  display: inline-flex;
  width: 52px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-white-faint);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.route-index-row strong {
  display: block;
  color: var(--color-white);
  font-size: 18px;
}

.route-index-row small {
  display: block;
  margin-top: 3px;
  color: var(--color-white-soft);
  font-size: 13px;
}

.route-index-row svg {
  color: var(--color-white);
  transition: color var(--motion-fast) ease, transform var(--motion-fast) ease;
}

.route-index-row:hover svg {
  color: var(--color-accent);
  transform: translateX(4px);
}

.nodes-head-note {
  max-width: 540px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.region-section {
  padding-top: 48px;
  scroll-margin-top: var(--toc-offset);
}

.region-section:first-of-type {
  padding-top: 0;
}

.region-heading {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 22px;
}

.region-code {
  display: inline-flex;
  width: 72px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-route);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
}

.region-heading h3 {
  margin-bottom: 5px;
  font-size: 24px;
}

.region-heading p {
  max-width: 860px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14.5px;
}

.node-table caption {
  padding: 13px 18px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-align: left;
}

.node-table tbody tr:last-child td {
  border-bottom: 0;
}

.route-type {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 4px 10px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-route);
  font-size: 12px;
  font-weight: 700;
}

.type-ledger {
  border-top: 3px solid var(--color-accent);
}

.type-entry {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 36px;
  padding-top: 38px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-line);
}

.type-entry-code {
  display: inline-flex;
  width: 150px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-route);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.type-entry-body h3 {
  margin-bottom: 14px;
}

.type-entry-body p {
  max-width: 920px;
  color: var(--color-muted);
}

.route-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 48px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.route-principles > div {
  padding: 28px;
  border-right: 1px solid var(--color-line);
}

.route-principles > div:first-child {
  border-left: 1px solid var(--color-line);
}

.route-principles .mono {
  display: block;
  margin-bottom: 18px;
  color: var(--color-route);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
}

.route-principles h3 {
  font-size: 21px;
}

.route-principles p {
  color: var(--color-muted);
  font-size: 14px;
}

.selection-list {
  border-top: 3px solid var(--color-accent);
}

.selection-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 38px;
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-line);
}

.selection-label {
  display: inline-flex;
  width: 160px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-route);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.selection-row h3 {
  margin-bottom: 12px;
  font-size: 23px;
}

.selection-row p {
  max-width: 920px;
  color: var(--color-muted);
}

.decision-track {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--color-accent);
  counter-reset: decision-step;
  list-style: none;
}

.decision-track li {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 24px;
  padding-top: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-line);
  counter-increment: decision-step;
}

.decision-track li::before {
  display: inline-flex;
  width: 64px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-route);
  color: var(--color-white);
  content: "GI-" counter(decision-step);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.decision-track h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.decision-track p {
  max-width: 900px;
  color: var(--color-muted);
}

.nodes-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: end;
  margin-top: 64px;
  padding: 40px;
  border-radius: var(--radius-md);
  background: var(--color-route);
  box-shadow: var(--shadow-board);
}

.nodes-summary h2 {
  color: var(--color-white);
}

.nodes-summary p {
  max-width: 780px;
  color: var(--color-white-soft);
}

.nodes-summary p strong {
  color: var(--color-white);
}

.nodes-summary .section-kicker {
  color: var(--color-white-soft);
}

.nodes-summary-button {
  border-color: var(--color-white);
  background: var(--color-transparent);
  color: var(--color-white);
}

.nodes-summary-button:hover {
  background: var(--color-white-hover);
}

@media (max-width: 1180px) {
  .nodes-hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .route-index-board {
    width: min(100%, 760px);
  }

  .route-principles {
    grid-template-columns: 1fr;
  }

  .route-principles > div,
  .route-principles > div:first-child {
    border-right: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
    border-left: 1px solid var(--color-line);
  }

  .route-principles > div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 820px) {
  .type-entry,
  .selection-row {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .nodes-summary {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .nodes-hero-grid {
    gap: 40px;
    padding-top: 44px;
    padding-bottom: 52px;
  }

  .nodes-fact-line {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .nodes-fact-line span,
  .nodes-fact-line span:first-child {
    padding: 11px 10px;
    border-right: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
  }

  .nodes-fact-line span:nth-child(even) {
    border-right: 0;
  }

  .nodes-fact-line span:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .route-index-head,
  .route-index-row {
    padding-inline: 18px;
  }

  .route-index-row {
    grid-template-columns: 44px minmax(0, 1fr) 24px;
    gap: 12px;
  }

  .route-index-code {
    width: 44px;
  }

  .route-index-row small {
    font-size: 12px;
  }

  .region-heading {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 14px;
  }

  .region-code {
    width: 54px;
    height: 44px;
  }

  .type-entry-code,
  .selection-label {
    width: fit-content;
    min-width: 130px;
  }

  .decision-track li {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 14px;
  }

  .decision-track li::before {
    width: 52px;
  }

  .nodes-summary {
    padding: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .route-index-row:hover svg {
    transform: none;
  }
}