.nodes-hero {
  position: relative;
  overflow: hidden;
  overflow-x: clip;
  padding-top: 84px;
  padding-bottom: 88px;
  border-bottom: 1px solid var(--color-border-soft);
  isolation: isolate;
}

.nodes-hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(30deg, transparent 48%, var(--color-grid) 49%, var(--color-grid) 51%, transparent 52%),
    linear-gradient(150deg, transparent 48%, var(--color-grid) 49%, var(--color-grid) 51%, transparent 52%);
  background-size: 46px 80px;
  content: "";
  mask-image: linear-gradient(to bottom, var(--color-bg), transparent);
}

.nodes-hero::after {
  position: absolute;
  z-index: -1;
  top: -240px;
  right: -180px;
  width: 720px;
  height: 720px;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-glow), transparent 68%);
  content: "";
  pointer-events: none;
}

.nodes-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  align-items: center;
  gap: 72px;
}

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

.nodes-hero-lead {
  max-width: 620px;
  margin-top: 24px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.nodes-fact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  margin-top: 26px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.nodes-fact-row li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nodes-fact-row li + li::before {
  color: var(--color-text-dim);
  content: "·";
}

.coverage-panel {
  position: relative;
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: linear-gradient(145deg, var(--color-panel-raised), var(--color-panel));
  box-shadow: var(--shadow-window);
}

.coverage-panel::before {
  position: absolute;
  right: -120px;
  bottom: -140px;
  width: 360px;
  height: 360px;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-glow), transparent 68%);
  content: "";
  pointer-events: none;
}

.coverage-panel-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.coverage-panel-head h2 {
  margin-top: 5px;
  font-size: 30px;
}

.coverage-label,
.coverage-summary-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.region-badges {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.region-badge {
  display: grid;
  gap: 3px;
  min-width: 0;
  padding: 17px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.region-badge.is-primary {
  border-color: var(--color-accent);
  background: var(--color-panel-high);
  box-shadow: var(--shadow-pill);
}

.region-code {
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.region-badge strong {
  font-size: 17px;
}

.region-badge span:last-child {
  overflow-wrap: anywhere;
  color: var(--color-text-muted);
  font-size: 12px;
}

.gateway-path {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 8px 1fr 72px 1fr 8px;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
}

.gateway-path svg {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.path-node {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 0 4px var(--color-success-halo);
}

.path-line {
  height: 1px;
  border-top: 1px dashed var(--color-border-strong);
}

.route-document {
  padding-top: 56px;
  padding-bottom: 104px;
}

.nodes-section {
  padding-top: 74px;
  padding-bottom: 74px;
  border-bottom: 1px solid var(--color-border-soft);
}

.nodes-section:last-child {
  border-bottom: 0;
}

.route-table-shell {
  box-shadow: var(--shadow-tile);
}

.route-tag {
  display: inline-flex;
  min-height: 26px;
  max-width: 100%;
  align-items: center;
  padding: 3px 9px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-raised);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.route-tag-accent {
  border-color: var(--color-accent);
  color: var(--color-text);
}

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

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

.route-type {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 22px;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
}

.route-type.is-emphasis {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-tile);
}

.route-type-mark {
  display: flex;
  width: 62px;
  height: 68px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-high);
}

.route-type-mark svg {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.route-type-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.13em;
}

.route-type h3 {
  margin-top: 5px;
}

.route-type p {
  margin-top: 13px;
  color: var(--color-text-muted);
}

.topology-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.topology-principles > div {
  padding: 21px;
  border-top: 2px solid var(--color-accent);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.topology-principles p {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.choice-card {
  position: relative;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
}

.choice-card-summary {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
}

.choice-symbol {
  display: inline-flex;
  min-width: 42px;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  padding-inline: 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-high);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.choice-card p {
  margin-top: 13px;
  color: var(--color-text-muted);
}

.decision-flow {
  position: relative;
  display: grid;
  gap: 14px;
}

.decision-flow::before {
  position: absolute;
  top: 34px;
  bottom: 34px;
  left: 31px;
  width: 1px;
  background: var(--color-border-strong);
  content: "";
}

.decision-flow article {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 26px 24px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
}

.decision-index {
  z-index: 1;
  display: flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  align-self: start;
  justify-self: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-panel-raised);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 700;
}

.decision-flow p {
  margin-top: 9px;
  color: var(--color-text-muted);
}

.decision-flow + .callout {
  margin-top: 22px;
}

.coverage-copy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: start;
  gap: 34px;
}

.coverage-copy-main {
  color: var(--color-text-muted);
}

.coverage-copy-main h3 {
  margin-top: 34px;
}

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

.coverage-copy-main p {
  margin-top: 13px;
}

.coverage-summary {
  position: sticky;
  top: calc(var(--header-height) + 82px);
  padding: 26px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-panel);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-tile);
}

.coverage-summary dl {
  display: grid;
  gap: 0;
  margin-top: 20px;
}

.coverage-summary dl > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border-soft);
}

.coverage-summary dt {
  color: var(--color-text-muted);
}

.coverage-summary dd {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-weight: 700;
  text-align: right;
}

.coverage-summary .btn {
  width: 100%;
  margin-top: 22px;
}

@media (max-width: 1040px) {
  .nodes-hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

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

  .coverage-summary {
    position: static;
  }
}

@media (max-width: 768px) {
  .nodes-hero {
    padding-top: 56px;
    padding-bottom: 64px;
  }

  .nodes-hero-grid {
    gap: 38px;
  }

  .nodes-hero-lead {
    font-size: 16px;
  }

  .coverage-panel {
    padding: 22px;
  }

  .region-badges,
  .choice-grid,
  .topology-principles {
    grid-template-columns: 1fr;
  }

  .route-document {
    padding-top: 40px;
    padding-bottom: 76px;
  }

  .nodes-section {
    padding-top: 60px;
    padding-bottom: 60px;
  }

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

@media (max-width: 520px) {
  .nodes-fact-row {
    display: grid;
    gap: 8px;
  }

  .nodes-fact-row li + li::before {
    display: none;
  }

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

  .gateway-path {
    grid-template-columns: 6px 1fr 54px 1fr 6px;
  }

  .gateway-path svg {
    width: 54px;
    height: 60px;
  }

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

  .decision-flow::before {
    display: none;
  }

  .decision-flow article {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .decision-index {
    justify-self: start;
  }

  .coverage-summary {
    padding: 22px;
  }
}