.node-hero {
  padding-top: clamp(54px, 8vw, 104px);
  padding-bottom: clamp(62px, 9vw, 116px);
  border-bottom: 1px solid var(--color-border);
  overflow-x: clip;
}

.node-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr);
  gap: clamp(38px, 7vw, 88px);
  align-items: center;
}

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

.node-hero-lede {
  max-width: 620px;
  margin-bottom: 24px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.node-hero-lede strong {
  color: var(--color-text);
}

.node-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 28px;
}

.node-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.region-board {
  position: relative;
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-device);
  transform: rotate(1deg);
}

.region-board::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--color-accent-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-accent-soft) 1px, transparent 1px);
  background-size: 34px 34px;
  content: "";
  opacity: .42;
}

.region-board-head,
.region-board-grid,
.region-board-note {
  position: relative;
  z-index: 1;
}

.region-board-head {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-muted);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.region-board-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-border);
}

.region-board-grid a {
  display: grid;
  min-height: 152px;
  align-content: center;
  gap: 5px;
  padding: 22px;
  background: var(--color-panel);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.region-board-grid a:hover {
  background: var(--color-accent-soft);
}

.region-board-grid strong {
  font-family: var(--font-display);
  font-size: 17px;
}

.region-board-grid small {
  color: var(--color-text-muted);
  font-size: 12px;
}

.region-mark {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-medium);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.region-board-note {
  margin: 0;
  padding: 16px 18px;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-size: 12px;
}

.nodes-document {
  padding-top: 42px;
  padding-bottom: var(--section-space);
}

.nodes-section {
  padding-top: clamp(68px, 8vw, 104px);
  padding-bottom: clamp(68px, 8vw, 104px);
}

.nodes-section + .nodes-section {
  border-top: 1px solid var(--color-border);
}

.location-group-block {
  margin-top: 54px;
}

.location-group-block:first-of-type {
  margin-top: 0;
}

.location-group-head {
  display: grid;
  grid-template-columns: minmax(210px, .42fr) minmax(0, 1fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 18px;
}

.location-group-head h3 {
  margin-bottom: 0;
}

.location-group-head p {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.line-label {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-muted);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.line-label-priority {
  border-color: var(--color-accent-border);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.route-explainer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.route-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.route-card-featured {
  border-color: var(--color-accent);
  box-shadow: 0 18px 46px -30px color-mix(in srgb, var(--color-accent) 64%, transparent);
}

.route-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 24px;
}

.route-code {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

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

.route-fit {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 13px;
}

.route-fit strong {
  color: var(--color-text);
}

.route-principles {
  margin-top: 22px;
}

.route-principles h3 {
  font-size: 22px;
}

.route-principles p {
  max-width: 960px;
  color: var(--color-text-muted);
}

.scenario-list {
  display: grid;
  gap: 12px;
}

.scenario-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: clamp(20px, 4vw, 46px);
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.scenario-index {
  display: flex;
  width: 68px;
  height: 68px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-medium);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .04em;
}

.scenario-item h3 {
  font-size: 23px;
}

.scenario-item p {
  max-width: 900px;
  color: var(--color-text-muted);
}

.switching-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: 20px;
  align-items: start;
}

.switching-copy h3 {
  margin-top: 30px;
  font-size: 21px;
}

.switching-copy h3:first-child {
  margin-top: 0;
}

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

.switching-checklist {
  position: sticky;
  top: var(--toc-offset);
  padding: 28px;
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-large);
  background: var(--color-accent-soft);
}

.switching-checklist ul {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
  padding: 0;
  color: var(--color-text-muted);
  list-style: none;
}

.switching-checklist li {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-accent-border);
}

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

.switching-checklist strong {
  color: var(--color-text);
}

.switching-checklist .btn {
  width: 100%;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.scope-card {
  min-height: 248px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.scope-label {
  display: block;
  margin-bottom: 25px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
}

.scope-card p {
  color: var(--color-text-muted);
}

.text-link {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 7px;
  margin-top: 8px;
  color: var(--color-accent-dark);
  font-weight: 800;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.nodes-section > .callout {
  margin-top: 32px;
}

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

  .region-board {
    max-width: 720px;
    transform: none;
  }

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

  .switching-checklist {
    position: static;
  }
}

@media (max-width: 768px) {
  .location-group-head {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .scenario-item {
    grid-template-columns: 1fr;
  }

  .scenario-index {
    width: 58px;
    height: 58px;
  }

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

@media (max-width: 640px) {
  .node-hero {
    padding-top: 40px;
    padding-bottom: 64px;
  }

  .node-hero-grid {
    gap: 34px;
  }

  .node-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .node-actions .btn {
    width: 100%;
  }

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

  .region-board-grid a {
    min-height: 126px;
  }

  .nodes-document {
    padding-top: 26px;
  }

  .nodes-section {
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .location-group-block {
    margin-top: 42px;
  }

  .route-card,
  .switching-checklist {
    padding: 20px;
  }

  .scenario-item {
    padding: 20px;
  }

  .scope-card {
    min-height: 0;
    padding: 22px;
  }
}