.nodes-hero {
  min-height: calc(100svh - var(--header-height));
  padding-top: 76px;
  padding-bottom: 76px;
  display: flex;
  align-items: center;
  overflow-x: clip;
}

.nodes-hero-grid {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;
  gap: 58px;
}

.nodes-hero-copy h1 {
  max-width: 560px;
}

.nodes-intro {
  max-width: 560px;
  margin-bottom: 26px;
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1.75;
}

.nodes-facts {
  margin-top: 26px;
}

.nodes-route-panel {
  padding: 20px;
  background-color: var(--color-panel);
  background-image: radial-gradient(var(--color-dot) 1px, transparent 1.3px);
  background-position: 8px 8px;
  background-size: 16px 16px;
  transform-style: preserve-3d;
}

.nodes-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 12px;
}

.nodes-route-art {
  width: 100%;
  height: auto;
  margin-top: 10px;
}

.nodes-candidate {
  fill: none;
  stroke: var(--color-line);
  stroke-dasharray: 5 7;
  stroke-linejoin: round;
  stroke-width: 1.25;
}

.nodes-selected {
  fill: none;
  stroke: var(--color-text);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.nodes-origin,
.nodes-node-active {
  fill: var(--color-text);
}

.nodes-node {
  fill: var(--color-line);
  stroke: var(--color-panel);
  stroke-width: 3;
}

.nodes-target {
  fill: var(--color-panel);
  stroke: var(--color-text);
  stroke-width: 3;
}

.nodes-lock-box {
  fill: var(--color-panel);
  stroke: var(--color-border);
  stroke-width: 1;
}

.nodes-lock {
  fill: none;
  stroke: var(--color-text);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.nodes-route-labels {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 12px 8px;
  border-top: 1px dashed var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.nodes-panel-note {
  margin: 12px 8px 2px;
  color: var(--color-muted);
  font-size: 13px;
}

.region-stack {
  display: grid;
  gap: 48px;
}

.region-block {
  min-width: 0;
}

.region-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 480px);
  align-items: end;
  gap: 30px;
  margin-bottom: 18px;
}

.region-heading h3 {
  margin-bottom: 0;
}

.region-heading p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.region-code {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent-ink);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.route-type {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  font-size: 12px;
  font-weight: 750;
  white-space: nowrap;
}

.route-type-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.route-explainer {
  position: relative;
  grid-column: span 4;
  min-height: 100%;
  padding: 30px 30px 84px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  transform-style: preserve-3d;
}

.route-explainer-alt {
  background: var(--color-panel-alt);
}

.route-explainer-dark {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-panel);
}

.route-explainer-dark h3 {
  color: var(--color-panel);
}

.route-explainer-dark .tag {
  border-color: var(--color-muted);
  background: var(--color-text);
  color: var(--color-accent);
}

.route-explainer-dark .feature-icon {
  color: var(--color-panel);
}

.route-explainer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.route-letter-mark {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
}

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

.route-explainer-dark p {
  color: var(--color-panel-alt);
}

.use-case-ledger {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.use-case-card {
  grid-column: span 6;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.use-case-card-alt {
  background: var(--color-panel-alt);
}

.use-case-card-dark {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-panel);
}

.use-case-card-dark h3 {
  color: var(--color-panel);
}

.use-case-card-dark p {
  color: var(--color-panel-alt);
}

.use-case-card-wide {
  grid-column: span 12;
}

.use-case-key {
  display: block;
  margin-bottom: 22px;
  color: var(--color-accent-ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
}

.use-case-card-dark .use-case-key {
  color: var(--color-accent);
}

.use-case-card p {
  max-width: 760px;
  color: var(--color-muted);
}

.selection-method {
  position: relative;
  display: grid;
  gap: 0;
  max-width: 900px;
}

.selection-method::before {
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 27px;
  border-left: 1px dashed var(--color-line);
  content: "";
}

.method-step {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
}

.method-mark {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 56px;
  height: 56px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-text);
  border-radius: 50%;
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 800;
}

.method-step h3 {
  margin-bottom: 8px;
  font-size: 23px;
}

.method-step p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.selection-method + .callout {
  max-width: 900px;
}

.selection-method + .callout a {
  color: var(--color-accent-ink);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.coverage-layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(320px, 5fr);
  align-items: stretch;
  gap: 32px;
}

.coverage-layout h2 {
  margin-top: 20px;
}

.coverage-layout > div > p {
  max-width: 730px;
  color: var(--color-muted);
  font-size: 16px;
}

.coverage-actions {
  margin-top: 28px;
}

.coverage-board {
  padding: 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
}

.coverage-board > .mono {
  display: block;
  margin-bottom: 24px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
}

.coverage-board h3 {
  max-width: 390px;
  margin-bottom: 30px;
  font-size: 30px;
}

.coverage-list {
  margin: 0;
}

.coverage-list > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--color-muted);
}

.coverage-list dt {
  color: var(--color-line);
  font-family: var(--font-mono);
  font-size: 12px;
}

.coverage-list dd {
  margin: 0;
  color: var(--color-panel);
  font-weight: 700;
}

@media (max-width: 1040px) {
  .nodes-hero-grid {
    grid-template-columns: 1fr;
  }

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

  .nodes-route-panel {
    max-width: 820px;
  }

  .route-explainer {
    grid-column: span 6;
  }

  .route-explainer:last-child {
    grid-column: span 12;
  }
}

@media (max-width: 860px) {
  .region-heading {
    grid-template-columns: 1fr;
    gap: 10px;
  }

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

  .coverage-board {
    min-width: 0;
  }
}

@media (max-width: 768px) {
  .nodes-hero {
    min-height: auto;
    padding-top: 54px;
    padding-bottom: 60px;
  }

  .nodes-hero-grid {
    gap: 40px;
  }

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

  .route-type-grid,
  .use-case-ledger {
    grid-template-columns: 1fr;
  }

  .route-explainer,
  .route-explainer:last-child,
  .use-case-card,
  .use-case-card-wide {
    grid-column: auto;
  }

  .route-explainer {
    padding: 25px 25px 78px;
  }
}

@media (max-width: 560px) {
  .nodes-route-panel {
    padding: 12px;
  }

  .nodes-panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .region-stack {
    gap: 38px;
  }

  .method-step {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
  }

  .method-mark {
    width: 44px;
    height: 44px;
    font-size: 14px;
  }

  .selection-method::before {
    top: 22px;
    bottom: 22px;
    left: 21px;
  }

  .coverage-board {
    padding: 25px;
  }

  .coverage-board h3 {
    font-size: 26px;
  }

  .coverage-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}