.nodes-hero {
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.nodes-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 44%, var(--color-accent-glow), transparent 34%);
  pointer-events: none;
}

.nodes-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(560px, 1.18fr);
  align-items: center;
  gap: clamp(42px, 6vw, 90px);
}

.nodes-hero-copy {
  position: relative;
  z-index: 2;
}

.nodes-hero-copy .lead {
  max-width: 650px;
}

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

.nodes-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.nodes-fact-row li {
  min-width: 132px;
  display: grid;
  gap: 2px;
  padding: 11px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: 0 8px 22px var(--color-soft-shadow);
}

.nodes-fact-row strong {
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 13px;
}

.nodes-fact-row span {
  color: var(--color-muted);
  font-size: 12px;
}

.nodes-route-board {
  position: relative;
  min-height: 500px;
  padding: 16px;
  overflow: hidden;
  border: 1px solid var(--color-rack-edge);
  border-radius: var(--radius-lg);
  background: var(--color-rack);
  box-shadow: var(--shadow-panel);
  color: var(--color-rack-copy);
  transform: rotate(-0.35deg);
}

.nodes-route-board::before,
.nodes-route-board::after {
  content: "";
  position: absolute;
  border: 1px solid var(--color-rack-line);
  border-radius: 50%;
  pointer-events: none;
}

.nodes-route-board::before {
  width: 330px;
  height: 330px;
  top: 82px;
  right: -122px;
}

.nodes-route-board::after {
  width: 210px;
  height: 210px;
  left: -90px;
  bottom: -80px;
}

.route-board-head,
.route-board-foot {
  position: relative;
  z-index: 2;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 13px;
  border: 1px solid var(--color-rack-edge);
  border-radius: var(--radius-sm);
  background: var(--color-rack-raised);
  color: var(--color-rack-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.route-board-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-rack-copy);
}

.route-board-state i {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-glow);
}

.route-map-art {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 360px;
  color: var(--color-accent);
}

.route-grid-line {
  fill: none;
  stroke: var(--color-rack-line);
  stroke-width: 1;
  stroke-dasharray: 5 8;
}

.route-path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
}

.route-path-main {
  stroke-width: 4;
}

.route-path-secondary {
  stroke: var(--color-rack-muted);
  stroke-width: 2;
  stroke-dasharray: 7 9;
}

.route-node {
  fill: var(--color-rack-raised);
  stroke: var(--color-rack-copy);
  stroke-width: 3;
}

.route-node-active {
  fill: var(--color-accent);
  stroke: var(--color-accent-soft);
  filter: drop-shadow(0 0 12px var(--color-accent));
}

.route-board-labels {
  position: absolute;
  z-index: 2;
  inset: 78px 30px auto;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  color: var(--color-rack-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
}

.route-board-foot {
  justify-content: flex-start;
}

.route-board-foot span {
  padding: 4px 7px;
  border: 1px solid var(--color-rack-line);
  border-radius: var(--radius-xs);
  color: var(--color-rack-copy);
}

.nodes-document {
  position: relative;
}

.nodes-document > .toc-tabs {
  margin-top: 24px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(320px, 1fr);
  align-items: end;
  gap: clamp(30px, 7vw, 96px);
  margin-bottom: 42px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading > p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--color-muted);
}

.table-note {
  max-width: 940px;
  margin: 18px 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.route-kind {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding: 3px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  white-space: nowrap;
}

.route-kind-premium {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.route-kind-direct {
  border-color: var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-ink);
}

.inner-wrap {
  width: 100%;
  max-width: calc(var(--content-width) + (var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.route-ledger {
  border-top: 1px solid var(--color-border);
}

.route-ledger-item {
  display: grid;
  grid-template-columns: minmax(150px, 0.28fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 86px);
  padding-top: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--color-border);
}

.route-ledger-index {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.route-ledger-index i {
  width: 9px;
  height: 9px;
  margin-top: 5px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 5px var(--color-accent-glow);
}

.route-ledger-copy {
  max-width: 860px;
}

.route-ledger-copy h3 {
  font-size: clamp(24px, 3vw, 34px);
}

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

.route-ledger-copy p:last-child {
  margin-bottom: 0;
}

.usecase-matrix {
  border-top: 1px solid var(--color-border);
}

.usecase-row {
  display: grid;
  grid-template-columns: minmax(190px, 0.34fr) minmax(0, 1fr);
  gap: clamp(26px, 6vw, 86px);
  padding-top: 38px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-border);
}

.usecase-label {
  display: grid;
  align-content: start;
  gap: 8px;
}

.usecase-label span {
  color: var(--color-ink);
  font-size: 20px;
  font-weight: 760;
}

.usecase-label strong {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.usecase-content {
  max-width: 850px;
}

.usecase-content p {
  color: var(--color-muted);
}

.usecase-content p:last-child {
  margin-bottom: 0;
}

.switching-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(420px, 1.1fr);
  align-items: start;
  gap: clamp(38px, 8vw, 110px);
}

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

.switching-checklist {
  display: grid;
  border: 1px solid var(--color-rack-edge);
  border-radius: var(--radius-md);
  background: var(--color-rack);
  box-shadow: var(--shadow-panel);
}

.switching-checklist div {
  display: grid;
  grid-template-columns: minmax(110px, 0.38fr) minmax(0, 1fr);
  gap: 22px;
  padding: 22px;
  border-bottom: 1px solid var(--color-rack-edge);
}

.switching-checklist div:last-child {
  border-bottom: 0;
}

.switching-checklist span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.switching-checklist p {
  margin-bottom: 0;
  color: var(--color-rack-muted);
}

.coverage-panel {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(520px, 1.28fr);
  gap: clamp(40px, 8vw, 110px);
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: 0 22px 58px var(--color-soft-shadow);
}

.coverage-summary {
  align-self: start;
}

.coverage-summary h2 {
  max-width: 10ch;
}

.coverage-principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.coverage-principles article {
  padding: 24px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.coverage-principles h3 {
  font-size: 19px;
}

.coverage-principles p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.nodes-final-note {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  margin-top: 28px;
  padding: 24px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-accent-soft);
}

.nodes-final-note p {
  max-width: 850px;
  margin: 5px 0 0;
  color: var(--color-muted);
}

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

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

  .nodes-route-board {
    min-height: 460px;
  }

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

  .coverage-summary h2 {
    max-width: none;
  }
}

@media (max-width: 860px) {
  .section-heading,
  .switching-layout {
    grid-template-columns: 1fr;
  }

  .route-ledger-item,
  .usecase-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .route-ledger-index {
    align-items: center;
  }

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

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

  .nodes-final-note .button {
    width: fit-content;
  }
}

@media (max-width: 640px) {
  .nodes-route-board {
    min-height: 390px;
    padding: 10px;
    transform: none;
  }

  .route-map-art {
    min-height: 290px;
  }

  .route-board-labels {
    display: none;
  }

  .route-board-head {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .nodes-fact-row li {
    min-width: 0;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .route-ledger-item,
  .usecase-row {
    padding-top: 30px;
    padding-bottom: 30px;
  }

  .switching-checklist div {
    grid-template-columns: 1fr;
    gap: 7px;
    padding: 18px;
  }

  .coverage-panel {
    padding: 20px;
  }

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

  .coverage-principles article {
    padding: 19px;
  }

  .nodes-final-note {
    padding: 20px;
  }

  .nodes-final-note .button {
    width: 100%;
  }
}