:root {
  --nodes-table-min: 720px;
  --nodes-copy-max: 660px;
  --nodes-aside-width: 330px;
  --nodes-index-width: 260px;
}

.nodes-intro {
  padding-top: 26px;
  overflow-x: clip;
}

.nodes-intro__card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, .95fr);
  min-height: 570px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-hero);
  box-shadow: var(--shadow-card);
}

.nodes-intro__card::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-hero-dot) 1px, transparent 1px);
  background-size: 26px 26px;
  content: "";
  pointer-events: none;
}

.nodes-intro__copy {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  flex-direction: column;
  padding: 56px 38px 56px 58px;
}

.nodes-intro h1 {
  max-width: var(--nodes-copy-max);
  margin: 22px 0 0;
  color: var(--color-hero-text);
  font-size: clamp(52px, 5vw, 68px);
  font-weight: 900;
}

.nodes-intro__lead {
  max-width: var(--nodes-copy-max);
  margin: 22px 0 0;
  color: var(--color-hero-muted);
  font-size: 16px;
  line-height: 1.85;
}

.nodes-intro__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.nodes-intro__facts span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-pill);
  background: var(--color-hero-glass);
  color: var(--color-hero-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.nodes-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.nodes-intro .btn-secondary {
  border-color: var(--color-hero-line);
  background: var(--color-hero-glass);
  color: var(--color-hero-text);
}

.nodes-intro .btn-secondary:hover {
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.nodes-catalogue {
  position: relative;
  z-index: 1;
  align-self: center;
  margin: 28px 28px 28px 0;
  overflow: hidden;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-md);
  background: var(--color-hero-panel);
  box-shadow: var(--shadow-drop);
}

.nodes-catalogue__head {
  display: flex;
  min-height: 50px;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-hero-line);
  color: var(--color-hero-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.nodes-catalogue__head strong {
  margin-left: auto;
  color: var(--color-hero-faint);
  font-weight: 500;
}

.nodes-catalogue__regions {
  display: grid;
  gap: 1px;
  padding: 8px;
  background: var(--color-hero-line);
}

.nodes-catalogue__regions a {
  display: grid;
  grid-template-columns: minmax(135px, .8fr) minmax(80px, .55fr) minmax(0, 1.2fr);
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 13px 14px;
  background: var(--color-hero-panel);
  color: var(--color-hero-text);
  text-decoration: none;
}

.nodes-catalogue__regions a:hover {
  background: var(--color-hero-panel-raised);
  box-shadow: inset 0 0 0 1px var(--color-warning);
}

.nodes-catalogue__key {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.nodes-catalogue__regions a > span:not(.nodes-catalogue__key) {
  font-weight: 750;
}

.nodes-catalogue__regions small {
  color: var(--color-hero-muted);
  line-height: 1.55;
}

.nodes-catalogue__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 14px 16px;
}

.nodes-catalogue__tags span {
  padding: 4px 10px;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-pill);
  color: var(--color-hero-faint);
  font-family: var(--font-mono);
  font-size: 10px;
}

.nodes-toc-wrap {
  padding-top: 28px;
}

.region-block {
  margin-top: 34px;
  scroll-margin-top: var(--toc-offset);
}

.region-block + .region-block {
  margin-top: 58px;
}

.region-block__head {
  display: grid;
  grid-template-columns: minmax(210px, .65fr) minmax(0, 1.35fr);
  align-items: end;
  gap: 32px;
  margin-bottom: 18px;
}

.region-block__head h3 {
  margin: 6px 0 0;
}

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

.region-block__code {
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
}

.region-block .server-table {
  min-width: var(--nodes-table-min);
}

.region-note {
  max-width: 980px;
  margin: 18px 0 0;
  color: var(--color-muted);
}

.nodes-types {
  background: var(--color-panel);
}

.route-type-ledger {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: var(--shadow-drop);
}

.route-type-entry {
  display: grid;
  grid-template-columns: var(--nodes-index-width) minmax(0, 1fr);
}

.route-type-entry + .route-type-entry {
  border-top: 1px solid var(--color-line);
}

.route-type-entry__index {
  padding: 28px;
  border-right: 1px solid var(--color-line);
  background: var(--color-panel-raised);
}

.route-type-entry__index h3 {
  margin: 18px 0 16px;
  font-size: 24px;
}

.route-type-entry__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.route-type-entry__body {
  padding: 30px 34px;
}

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

.route-type-entry__body p:last-child {
  margin-bottom: 0;
}

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

.use-case {
  position: relative;
  padding: 26px;
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: 0 2px 6px var(--color-shadow-soft);
}

.use-case:last-child {
  grid-column: 1 / -1;
}

.use-case__key {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
}

.use-case h3 {
  margin-bottom: 14px;
  font-size: 23px;
}

.use-case p {
  color: var(--color-muted);
}

.use-case p:last-child {
  margin-bottom: 0;
}

.nodes-switch {
  background: var(--color-hero);
  color: var(--color-hero-muted);
}

.nodes-switch .section-kicker {
  color: var(--color-accent);
}

.nodes-switch h2,
.nodes-switch h3 {
  color: var(--color-hero-text);
}

.nodes-switch .section-lead {
  color: var(--color-hero-muted);
}

.switching-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--nodes-aside-width);
  gap: 22px;
  align-items: start;
}

.switching-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-md);
  background: var(--color-hero-line);
  gap: 1px;
}

.switching-steps article {
  padding: 25px;
  background: var(--color-hero-panel);
}

.switching-steps article > span {
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: 12px;
}

.switching-steps h3 {
  margin: 10px 0 12px;
  font-size: 20px;
}

.switching-steps p {
  margin: 0;
  color: var(--color-hero-muted);
}

.switching-notes {
  padding: 26px;
  border-radius: var(--radius-md);
  background: var(--color-hero-panel-raised);
}

.switching-notes__label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.switching-notes h3 {
  margin: 12px 0 16px;
  font-size: 21px;
}

.switching-notes ul {
  margin-bottom: 18px;
  padding-left: 1.2em;
}

.switching-notes li {
  margin-bottom: 8px;
  color: var(--color-hero-muted);
}

.switching-notes li::marker {
  color: var(--color-warning);
}

.switching-notes p {
  margin: 0;
  padding-top: 17px;
  border-top: 1px solid var(--color-hero-line);
  color: var(--color-hero-muted);
}

.coverage-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-drop);
}

.coverage-panel__copy {
  padding: 38px;
}

.coverage-panel__copy p {
  color: var(--color-muted);
}

.coverage-panel__copy p:last-child {
  margin-bottom: 0;
}

.coverage-panel__directory {
  display: grid;
  align-content: center;
  gap: 1px;
  padding: 18px;
  background: var(--color-line);
}

.coverage-panel__directory div {
  padding: 18px;
  background: var(--color-page);
}

.coverage-panel__directory span {
  display: block;
  margin-bottom: 5px;
  color: var(--color-ink);
  font-weight: 800;
}

.coverage-panel__directory small {
  color: var(--color-muted);
  font-family: var(--font-mono);
  line-height: 1.6;
}

.nodes-end-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 24px;
  padding: 28px 30px;
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.nodes-end-actions h2 {
  margin-bottom: 8px;
  font-size: 27px;
}

.nodes-end-actions p {
  margin: 0;
  color: var(--color-muted);
}

@media (max-width: 1100px) {
  .nodes-intro__card {
    grid-template-columns: 1fr;
  }

  .nodes-intro__copy {
    padding-bottom: 24px;
  }

  .nodes-catalogue {
    margin: 12px 28px 28px;
  }

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

  .switching-notes {
    display: grid;
    grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr);
    gap: 12px 24px;
  }

  .switching-notes__label,
  .switching-notes h3 {
    grid-column: 1;
  }

  .switching-notes ul {
    grid-column: 2;
    grid-row: 1 / span 3;
    margin: 0;
  }

  .switching-notes p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nodes-intro {
    padding-top: 16px;
  }

  .nodes-intro__card {
    min-height: 0;
    border-radius: var(--radius-md);
  }

  .nodes-intro__copy {
    padding: 34px 22px 18px;
  }

  .nodes-intro h1 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .nodes-intro__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .nodes-intro__actions a {
    width: 100%;
  }

  .nodes-catalogue {
    margin: 10px 18px 18px;
  }

  .nodes-catalogue__regions a {
    grid-template-columns: minmax(120px, .8fr) minmax(80px, .6fr);
  }

  .nodes-catalogue__regions small {
    grid-column: 1 / -1;
  }

  .region-block__head {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .route-type-entry__index {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .use-case-grid,
  .switching-steps,
  .coverage-panel {
    grid-template-columns: 1fr;
  }

  .use-case:last-child {
    grid-column: auto;
  }

  .switching-notes {
    display: block;
  }

  .switching-notes ul {
    margin-bottom: 18px;
  }

  .coverage-panel__directory {
    align-content: stretch;
  }

  .nodes-end-actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .nodes-intro__copy {
    padding-inline: 18px;
  }

  .nodes-intro__facts {
    align-items: stretch;
    flex-direction: column;
  }

  .nodes-intro__facts span {
    justify-content: center;
  }

  .nodes-catalogue {
    margin-inline: 14px;
  }

  .nodes-catalogue__head strong {
    display: none;
  }

  .nodes-catalogue__regions a {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .nodes-catalogue__regions small {
    grid-column: auto;
  }

  .route-type-entry__index,
  .route-type-entry__body,
  .use-case,
  .switching-steps article,
  .switching-notes,
  .coverage-panel__copy,
  .nodes-end-actions {
    padding: 22px;
  }

  .coverage-panel__directory {
    padding: 12px;
  }
}