.nodes-hero {
  position: relative;
  overflow-x: clip;
  padding-top: 84px;
  padding-bottom: 72px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-page);
}

.nodes-hero::before {
  position: absolute;
  top: 42%;
  left: 50%;
  width: min(980px, 92vw);
  height: 420px;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, var(--color-panel-strong), var(--color-ambient-clear));
  content: "";
  pointer-events: none;
}

.nodes-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.nodes-hero h1 {
  margin-top: 20px;
}

.nodes-hero .lead {
  margin-top: 22px;
}

.nodes-hero .lead strong {
  color: var(--color-ink-deep);
}

.nodes-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.coverage-register {
  width: min(920px, 100%);
  margin-top: 52px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-page);
  box-shadow: var(--shadow-window);
  text-align: left;
}

.coverage-register-head {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-muted);
  font-size: 11px;
}

.coverage-register-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink);
  font-family: var(--font-mono);
}

.coverage-register-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.coverage-register-grid > div {
  min-height: 112px;
  padding: 22px;
  border-right: 1px solid var(--color-line);
}

.coverage-register-grid > div:last-child {
  border-right: 0;
}

.coverage-label {
  display: block;
  margin-bottom: 10px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.coverage-register strong {
  display: block;
  color: var(--color-ink-deep);
  font-size: 16px;
  line-height: 1.5;
}

.nodes-toc-wrap {
  position: relative;
  z-index: 20;
  padding-top: 24px;
}

.nodes-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  align-items: end;
  gap: 56px;
  margin-bottom: 38px;
}

.nodes-section-head p {
  color: var(--color-muted);
}

.route-kind {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 4px 9px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.nodes-table-note {
  margin-top: 24px;
}

.nodes-soft-section {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
}

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

.type-ledger-row {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 54px;
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-line);
}

.type-ledger-key .mono,
.use-ledger-title .mono {
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.type-ledger-key h3,
.use-ledger-title h3 {
  margin-top: 9px;
  font-size: 22px;
}

.type-ledger-copy,
.use-ledger-row > div:last-child {
  display: grid;
  gap: 15px;
}

.type-ledger-copy p,
.use-ledger-row p {
  color: var(--color-muted);
}

.route-cost-note {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 54px;
  margin-top: 28px;
  padding: 22px 0;
}

.route-cost-note strong {
  color: var(--color-ink-deep);
}

.route-cost-note p {
  color: var(--color-muted);
}

.use-ledger-row {
  position: relative;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 54px;
  padding-top: 32px;
  padding-right: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-line);
}

.use-ledger-row::after {
  position: absolute;
  top: 42px;
  right: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  content: "";
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.use-ledger-row:hover::after {
  opacity: 1;
}

.use-ledger-row a {
  color: var(--color-ink-deep);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.method-item {
  padding: 28px 24px;
  border-right: 1px solid var(--color-line);
}

.method-item:last-child {
  border-right: 0;
}

.method-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-page);
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.method-item h3 {
  margin-top: 20px;
  font-size: 18px;
}

.method-item p {
  margin-top: 11px;
  color: var(--color-muted);
  font-size: 14px;
}

.nodes-method-callout {
  margin-top: 28px;
}

.notes-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: start;
  gap: 72px;
}

.notes-copy {
  display: grid;
  gap: 18px;
}

.notes-copy .eyebrow {
  margin-bottom: -6px;
}

.notes-copy p {
  color: var(--color-muted);
}

.notes-copy strong {
  color: var(--color-ink-deep);
}

.nodes-fact-panel {
  padding: 26px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-menu);
}

.nodes-fact-panel > .mono {
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.nodes-fact-panel dl {
  margin: 20px 0 24px;
}

.nodes-fact-panel dl > div {
  display: grid;
  grid-template-columns: minmax(90px, 0.7fr) minmax(0, 1.3fr);
  gap: 18px;
  padding-top: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}

.nodes-fact-panel dl > div:first-child {
  border-top: 1px solid var(--color-line);
}

.nodes-fact-panel dt {
  color: var(--color-muted);
  font-size: 13px;
}

.nodes-fact-panel dd {
  margin: 0;
  color: var(--color-ink-deep);
  font-size: 13px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.nodes-fact-panel .btn {
  width: 100%;
}

@media (max-width: 960px) {
  .coverage-register-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .coverage-register-grid > div {
    border-bottom: 1px solid var(--color-line);
  }

  .coverage-register-grid > div:nth-child(2) {
    border-right: 0;
  }

  .coverage-register-grid > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .nodes-section-head {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 18px;
  }

  .type-ledger-row,
  .use-ledger-row,
  .route-cost-note {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 32px;
  }

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

  .method-item:nth-child(2) {
    border-right: 0;
  }

  .method-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--color-line);
  }

  .notes-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }
}

@media (max-width: 640px) {
  .nodes-hero {
    padding-top: 54px;
    padding-bottom: 52px;
  }

  .nodes-hero::before {
    height: 300px;
  }

  .nodes-hero-actions {
    width: 100%;
  }

  .nodes-hero-actions .btn {
    flex: 1 1 140px;
  }

  .coverage-register {
    margin-top: 38px;
  }

  .coverage-register-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .coverage-register-grid {
    grid-template-columns: 1fr;
  }

  .coverage-register-grid > div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .coverage-register-grid > div:nth-child(2) {
    border-right: 0;
  }

  .coverage-register-grid > div:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--color-line);
  }

  .coverage-register-grid > div:last-child {
    border-bottom: 0;
  }

  .nodes-toc-wrap {
    padding-top: 16px;
  }

  .nodes-section-head {
    margin-bottom: 28px;
  }

  .type-ledger-row,
  .use-ledger-row,
  .route-cost-note {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .type-ledger-row,
  .use-ledger-row {
    padding-top: 26px;
    padding-bottom: 26px;
  }

  .route-cost-note {
    margin-top: 18px;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .method-item,
  .method-item:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .method-item:last-child {
    border-bottom: 0;
  }

  .nodes-fact-panel {
    padding: 22px 18px;
  }

  .nodes-fact-panel dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}