.nodes-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px),
    var(--color-page);
  background-size: 44px 44px;
}

.nodes-hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 34%;
  height: 5px;
  background: var(--color-accent);
  content: "";
}

.nodes-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(430px, 1.05fr);
  align-items: center;
  gap: 56px;
  min-height: 640px;
  padding-top: 72px;
  padding-bottom: 72px;
}

.nodes-hero-copy {
  min-width: 0;
}

.nodes-hero-copy h1 {
  margin-top: 18px;
  margin-bottom: 24px;
}

.nodes-hero-copy .lead {
  max-width: 660px;
}

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

.nodes-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.nodes-hero-note {
  max-width: 650px;
  margin-top: 22px;
  padding-left: 16px;
  border-left: 3px solid var(--color-accent);
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.coverage-board {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
  transform: rotate(0.45deg);
}

.coverage-board-head,
.coverage-board-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.coverage-board-head {
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
}

.coverage-board-foot {
  justify-content: flex-start;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
}

.coverage-board-foot span {
  padding-right: 14px;
  border-right: 1px solid var(--color-line);
}

.coverage-board-foot span:last-child {
  border-right: 0;
}

.coverage-axis {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: center;
  gap: 8px;
  margin: 22px 14px;
  padding: 18px 16px;
  border-radius: var(--radius-xs);
  background: var(--color-ink);
  color: var(--color-on-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.coverage-axis::before {
  position: absolute;
  top: -9px;
  bottom: -9px;
  left: 50%;
  width: 3px;
  background: var(--color-accent);
  content: "";
}

.coverage-axis::after {
  position: absolute;
  top: -26px;
  left: 50%;
  padding: 3px 7px;
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  color: var(--color-on-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  transform: translateX(-44%);
  content: "TX";
}

.coverage-axis i {
  height: 1px;
  background: var(--color-ruler-tick-strong);
}

.coverage-regions {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  padding: 8px 2px 22px;
}

.region-tile {
  display: flex;
  min-height: 128px;
  align-items: flex-end;
  padding: 12px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 900;
  writing-mode: vertical-rl;
}

.region-tile:nth-child(2),
.region-tile:nth-child(4) {
  transform: translateY(10px);
}

.region-tile:nth-child(3) {
  grid-column: span 2;
}

.region-tile-orange {
  background: var(--color-channel-orange);
  color: var(--color-on-dark);
}

.region-tile-sky {
  background: var(--color-channel-sky);
  color: var(--color-on-dark);
}

.region-tile-green {
  background: var(--color-channel-green);
}

.region-tile-rose {
  background: var(--color-channel-rose);
  color: var(--color-on-dark);
}

.region-tile-yellow {
  background: var(--color-channel-yellow);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 38px;
}

.nodes-section-heading h2 {
  margin-top: 12px;
}

.nodes-section-heading > p {
  color: var(--color-muted);
  line-height: 1.85;
}

.region-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
}

.region-jump a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding-inline: 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  font-size: 14px;
  font-weight: 800;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast);
}

.region-jump a:hover {
  border-color: var(--color-ink);
  background: var(--color-panel-strong);
}

.region-block {
  scroll-margin-top: var(--toc-offset);
}

.region-block + .region-block {
  margin-top: 48px;
}

.region-intro {
  max-width: var(--reading-width);
  margin-bottom: 16px;
  color: var(--color-muted);
  line-height: 1.8;
}

.route-label {
  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-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.2;
  white-space: nowrap;
}

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

.route-label-direct {
  border-color: var(--color-success);
  background: var(--color-page);
  color: var(--color-success);
}

.nodes-table-note {
  margin-top: 36px;
}

.route-type-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.route-type-card {
  position: relative;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.route-type-featured {
  border-color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.route-type-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 40px;
}

.route-code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.route-marker {
  position: relative;
  width: 62px;
  height: 12px;
  flex: 0 0 auto;
  border-top: 1px solid var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
}

.route-marker::after {
  position: absolute;
  top: -5px;
  left: 50%;
  width: 3px;
  height: 20px;
  background: var(--color-accent);
  content: "";
}

.route-type-card h3 {
  margin-bottom: 18px;
}

.route-type-card p {
  color: var(--color-muted);
  line-height: 1.85;
}

.route-type-card p + p {
  margin-top: 16px;
}

.route-cost-note {
  display: grid;
  grid-template-columns: minmax(130px, 0.25fr) minmax(0, 1.75fr);
  gap: 26px;
  margin-top: 22px;
  padding: 26px 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.route-cost-label {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.route-cost-note p {
  color: var(--color-muted);
  line-height: 1.8;
}

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

.use-case-list {
  border-top: 1px solid var(--color-line);
}

.use-case-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.45fr) minmax(0, 1.55fr);
  gap: 42px;
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-line);
}

.use-case-index {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.use-case-index span {
  padding: 5px 9px;
  border-radius: var(--radius-xs);
  background: var(--color-ink);
  color: var(--color-on-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.use-case-index strong {
  font-family: var(--font-display);
  font-size: 19px;
}

.use-case-copy h3 {
  margin-bottom: 14px;
  font-size: 24px;
}

.use-case-copy p {
  color: var(--color-muted);
  line-height: 1.9;
}

.use-case-copy p + p {
  margin-top: 12px;
}

.selection-panel {
  padding: 40px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.selection-panel-head {
  max-width: 760px;
}

.selection-panel-head h2 {
  margin-top: 12px;
  margin-bottom: 16px;
}

.selection-panel-head > p:last-child {
  color: var(--color-muted);
  line-height: 1.8;
}

.selection-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 36px;
  margin-bottom: 28px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-line);
}

.selection-steps article {
  min-width: 0;
  padding: 24px;
  background: var(--color-panel);
}

.selection-step-code {
  display: block;
  margin-bottom: 38px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.selection-steps h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.selection-steps p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.coverage-summary {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr) auto;
  align-items: center;
  gap: 38px;
}

.coverage-summary h2 {
  margin-top: 10px;
  font-size: clamp(30px, 3.5vw, 44px);
}

.coverage-summary > p {
  color: var(--color-muted);
  line-height: 1.8;
}

.coverage-actions {
  display: grid;
  gap: 10px;
  min-width: 160px;
}

@media (max-width: 1000px) {
  .nodes-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .coverage-board {
    max-width: 760px;
    transform: none;
  }

  .route-type-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .coverage-summary {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .coverage-actions {
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nodes-hero {
    background-size: 32px 32px;
  }

  .nodes-hero-inner {
    gap: 42px;
    padding-top: 52px;
    padding-bottom: 58px;
  }

  .section-heading {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .coverage-regions {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .region-tile:nth-child(3) {
    grid-column: span 1;
  }

  .use-case-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .use-case-index {
    justify-content: flex-start;
  }

  .route-cost-note {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .selection-panel {
    padding: 26px;
  }
}

@media (max-width: 560px) {
  .nodes-hero-copy h1 {
    margin-top: 16px;
    margin-bottom: 18px;
  }

  .coverage-board {
    padding: 8px;
  }

  .coverage-axis {
    grid-template-columns: auto 1fr auto 1fr auto;
    padding-inline: 10px;
  }

  .coverage-axis span:nth-of-type(4),
  .coverage-axis i:nth-of-type(3) {
    display: none;
  }

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

  .region-tile {
    min-height: 88px;
    writing-mode: horizontal-tb;
  }

  .region-tile:nth-child(2),
  .region-tile:nth-child(4) {
    transform: none;
  }

  .region-tile:last-child {
    grid-column: 1 / -1;
  }

  .coverage-board-foot {
    flex-wrap: wrap;
  }

  .route-type-card {
    padding: 22px;
  }

  .selection-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .selection-step-code {
    margin-bottom: 24px;
  }

  .selection-panel {
    padding: 20px;
  }

  .coverage-summary {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .coverage-actions {
    grid-column: auto;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .coverage-board,
  .region-tile:nth-child(2),
  .region-tile:nth-child(4) {
    transform: none;
  }
}