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

.nodes-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 630px;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  gap: 64px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 72px;
}

.nodes-hero-copy h1 {
  max-width: 620px;
  margin-top: 22px;
  margin-bottom: 22px;
}

.nodes-hero-copy h1 .no-break {
  color: var(--color-accent);
}

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

.nodes-hero-actions {
  margin-top: 30px;
}

.nodes-facts {
  margin-top: 22px;
}

.nodes-hero-decor {
  position: absolute;
  top: 8%;
  right: -8%;
  width: 520px;
  height: 520px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  filter: blur(74px);
  opacity: 0.78;
}

.coverage-board {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.coverage-board-head,
.coverage-board-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
}

.coverage-board-head {
  min-height: 44px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-soft);
}

.coverage-board-foot {
  min-height: 48px;
  padding-inline: 18px;
  border-top: 1px solid var(--color-border);
}

.coverage-board-body {
  position: relative;
  display: grid;
  min-height: 360px;
  grid-template-columns: minmax(128px, 0.68fr) minmax(100px, 0.8fr) minmax(150px, 0.92fr);
  gap: 20px;
  align-items: center;
  padding: 38px 28px;
  background-image:
    linear-gradient(var(--color-paper-noise) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-paper-noise) 1px, transparent 1px);
  background-size: 26px 26px;
}

.coverage-origin {
  display: grid;
  justify-items: center;
  gap: 6px;
  text-align: center;
}

.coverage-origin-mark {
  position: relative;
  display: block;
  width: 64px;
  height: 48px;
  margin-bottom: 8px;
  border: 2px solid var(--color-ink-muted);
  border-radius: var(--radius-xs);
  background: var(--color-surface);
}

.coverage-origin-mark::before {
  position: absolute;
  right: 8px;
  bottom: 7px;
  left: 8px;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.coverage-origin-mark::after {
  position: absolute;
  bottom: -10px;
  left: 21px;
  width: 20px;
  height: 8px;
  border-top: 2px solid var(--color-ink-muted);
  border-right: 2px solid var(--color-ink-muted);
  border-left: 2px solid var(--color-ink-muted);
  content: "";
}

.coverage-origin strong {
  font-size: 14px;
}

.coverage-origin small {
  color: var(--color-ink-muted);
  font-size: 11px;
}

.coverage-rails {
  position: relative;
  height: 210px;
}

.coverage-rail {
  position: absolute;
  right: 0;
  left: 0;
  height: 0;
  border-top: 2px dashed var(--color-route-muted);
}

.coverage-rail::before,
.coverage-rail::after {
  position: absolute;
  top: -5px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-route-muted);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  content: "";
}

.coverage-rail::before {
  left: 0;
}

.coverage-rail::after {
  right: 0;
}

.coverage-rail-a {
  top: 34px;
  transform: skewY(-7deg);
}

.coverage-rail-b {
  top: 103px;
  border-top-style: solid;
  border-top-width: 4px;
  border-top-color: var(--color-accent);
  transform: skewY(6deg);
}

.coverage-rail-b::before,
.coverage-rail-b::after {
  top: -7px;
  width: 11px;
  height: 11px;
  border-width: 3px;
  border-color: var(--color-accent);
}

.coverage-rail-c {
  bottom: 34px;
  transform: skewY(-4deg);
}

.coverage-regions {
  display: grid;
  gap: 12px;
}

.coverage-region {
  display: grid;
  min-height: 56px;
  grid-template-columns: 58px minmax(0, 1fr);
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-surface);
  color: var(--color-ink-muted);
  font-size: 13px;
}

.coverage-region b {
  color: var(--color-route-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
}

.coverage-region.is-selected {
  border-color: var(--color-accent);
  color: var(--color-ink);
  box-shadow: 0 6px 18px var(--color-shadow);
}

.coverage-region.is-selected b {
  color: var(--color-accent-deep);
}

.nodes-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 34px;
}

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

.nodes-section-heading > p {
  margin-bottom: 5px;
  color: var(--color-ink-muted);
}

.region-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 20px;
}

.region-jump a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 7px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink-muted);
  font-size: 13px;
  font-weight: 700;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast);
}

.region-jump a:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-soft);
  color: var(--color-accent-deep);
}

.nodes-table-shell .route-table {
  min-width: 780px;
}

.nodes-table-shell .route-table th:nth-child(1),
.nodes-table-shell .route-table td:nth-child(1) {
  width: 25%;
}

.nodes-table-shell .route-table th:nth-child(2),
.nodes-table-shell .route-table td:nth-child(2) {
  width: 22%;
}

.nodes-table-shell .route-table th:nth-child(3),
.nodes-table-shell .route-table td:nth-child(3) {
  width: 22%;
}

.route-kind {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
}

.route-kind-priority {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-surface);
}

.route-kind-direct {
  background: var(--color-surface);
  color: var(--color-accent-deep);
}

.nodes-table-note {
  margin-top: 22px;
}

.route-type-stack {
  display: grid;
  gap: 16px;
}

.route-type-card {
  display: grid;
  grid-template-columns: minmax(90px, 0.25fr) minmax(0, 1.35fr) minmax(180px, 0.55fr);
  gap: 32px;
  align-items: center;
  padding: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
}

.route-type-index {
  color: var(--color-route-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.route-type-copy h3 {
  color: var(--color-accent-deep);
}

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

.route-type-diagram {
  position: relative;
  height: 106px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background:
    linear-gradient(var(--color-paper-noise) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-paper-noise) 1px, transparent 1px);
  background-size: 20px 20px;
}

.route-type-diagram::before {
  position: absolute;
  top: 50%;
  right: 17px;
  left: 17px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
  transform: translateY(-50%);
}

.route-type-diagram span {
  position: absolute;
  top: 50%;
  width: 15px;
  height: 15px;
  border: 3px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  transform: translateY(-50%);
}

.route-type-diagram span:nth-child(1) {
  left: 14px;
}

.route-type-diagram span:nth-child(2) {
  left: calc(50% - 8px);
}

.route-type-diagram span:nth-child(3) {
  right: 14px;
}

.route-type-diagram-priority::after {
  position: absolute;
  top: calc(50% - 9px);
  right: 30%;
  width: 30%;
  height: 18px;
  border-top: 3px solid var(--color-accent);
  border-bottom: 3px solid var(--color-accent);
  content: "";
}

.route-type-diagram-relay::before {
  transform: translateY(-50%) skewY(-10deg);
}

.route-type-diagram-direct span:nth-child(2) {
  display: none;
}

.usage-browser {
  border-top: 1px solid var(--color-border);
}

.usage-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) minmax(0, 1.2fr) minmax(150px, 0.35fr);
  gap: 28px;
  align-items: start;
  padding-top: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-border);
}

.usage-label {
  display: flex;
  align-items: center;
  gap: 12px;
}

.usage-label h3 {
  margin-bottom: 0;
  font-size: 20px;
}

.usage-mark {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  border: 3px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  box-shadow: 0 0 0 5px var(--color-focus-halo);
}

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

.usage-choice {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.selection-method {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 72px;
  align-items: start;
}

.selection-method-intro {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.method-list {
  display: grid;
  gap: 14px;
}

.method-list article {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
}

.method-symbol {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-weight: 700;
}

.method-list h3 {
  font-size: 20px;
}

.method-list p {
  color: var(--color-ink-muted);
}

.coverage-notes-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1.38fr);
  gap: 72px;
  align-items: start;
}

.coverage-prose {
  max-width: 760px;
}

.coverage-prose p {
  color: var(--color-ink-muted);
  font-size: 17px;
  line-height: 1.85;
}

.coverage-actions {
  margin-top: 30px;
}

@media (max-width: 1080px) {
  .nodes-hero-grid {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .nodes-hero-copy {
    max-width: 780px;
  }

  .coverage-board {
    max-width: 780px;
  }

  .route-type-card {
    grid-template-columns: 90px minmax(0, 1fr);
  }

  .route-type-diagram {
    grid-column: 2;
  }

  .usage-row {
    grid-template-columns: minmax(140px, 0.35fr) minmax(0, 1fr);
  }

  .usage-choice {
    grid-column: 2;
    width: fit-content;
  }
}

@media (max-width: 768px) {
  .nodes-hero-grid {
    gap: 34px;
    padding-top: 46px;
    padding-bottom: 52px;
  }

  .nodes-hero-decor {
    display: none;
  }

  .coverage-board-body {
    min-height: 0;
    grid-template-columns: 1fr;
    padding: 28px 20px;
  }

  .coverage-rails {
    height: 88px;
  }

  .coverage-rail-a {
    top: 15px;
  }

  .coverage-rail-b {
    top: 42px;
  }

  .coverage-rail-c {
    bottom: 15px;
  }

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

  .nodes-section-heading {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .route-type-card {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px 20px;
  }

  .route-type-diagram {
    grid-column: auto;
  }

  .usage-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .usage-choice {
    grid-column: auto;
  }

  .selection-method,
  .coverage-notes-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .selection-method-intro {
    position: static;
  }
}

@media (max-width: 520px) {
  .coverage-board-head,
  .coverage-board-foot {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

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

  .region-jump a {
    flex: 1 1 120px;
    justify-content: center;
  }

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