:root {
  color-scheme: dark;
  --color-canvas: #000000;
  --color-surface-1: #0f0f0f;
  --color-surface-2: #1a1a1a;
  --color-surface-3: #262626;
  --color-border: #3d3d3d;
  --color-border-strong: #8a8a8a;
  --color-text: #f2f2f2;
  --color-text-muted: #8a8a8a;
  --color-accent: #ffffff;
  --color-accent-contrast: #000000;

  --font-sans: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --type-caption: 0.75rem;
  --type-body-sm: 0.875rem;
  --type-body: 1rem;
  --type-title-sm: 1.25rem;
  --type-title: 1.5rem;
  --line-caption: 1rem;
  --line-body-sm: 1.25rem;
  --line-body: 1.5rem;
  --line-title-sm: 1.75rem;
  --line-title: 2rem;

  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --border-hairline: 0.0625rem;
  --border-emphasis: 0.125rem;
  --control-height: 2.75rem;
  --compact-control-height: 2.25rem;
  --header-height: 4rem;
  --content-width: 96rem;
  --transition-fast: 120ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 200ms cubic-bezier(0.2, 0, 0, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  background: var(--color-canvas);
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  min-height: 100svh;
  margin: var(--space-0);
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  line-height: var(--line-body);
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

[hidden] {
  display: none !important;
}

.copy-fallback {
  position: fixed;
  top: var(--space-0);
  left: var(--space-0);
  width: var(--border-hairline);
  height: var(--border-hairline);
  opacity: 0;
  pointer-events: none;
}

a {
  color: inherit;
}

button,
input,
summary {
  font: inherit;
}

button,
a,
input,
summary {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible,
[tabindex="0"]:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: var(--border-emphasis) solid var(--color-accent);
  outline-offset: var(--space-1);
}

button:disabled,
input:disabled {
  border-color: var(--color-border);
  color: var(--color-text-muted);
  cursor: wait;
}

code,
pre {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums slashed-zero;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: var(--space-0);
}

h1,
h2,
h3 {
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: -0.03em;
}

h1 {
  margin-bottom: var(--space-2);
  font-size: var(--type-title);
  line-height: var(--line-title);
}

h2 {
  margin-bottom: var(--space-0);
  font-size: var(--type-title-sm);
  line-height: var(--line-title-sm);
}

h3 {
  margin-bottom: var(--space-3);
  font-size: var(--type-body);
  line-height: var(--line-body);
}

.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 100;
  min-height: var(--control-height);
  padding: var(--space-3) var(--space-4);
  transform: translateY(calc(-100% - var(--space-4)));
  border: var(--border-emphasis) solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  text-decoration: none;
  text-transform: uppercase;
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(var(--space-0));
}

.site-header {
  position: sticky;
  top: var(--space-0);
  z-index: 40;
  display: grid;
  min-height: var(--header-height);
  grid-template-columns: minmax(14rem, 1fr) auto minmax(13rem, 1fr);
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-2) max(var(--space-5), calc((100vw - var(--content-width)) / 2));
  border-bottom: var(--border-hairline) solid var(--color-border);
  background: var(--color-canvas);
}

.brand {
  display: inline-flex;
  width: max-content;
  min-height: var(--control-height);
  align-items: center;
  gap: var(--space-3);
  color: var(--color-accent);
  text-decoration: none;
}

.brand svg {
  width: var(--space-5);
  height: var(--space-5);
  flex: 0 0 auto;
  fill: currentColor;
}

.wordmark {
  font-size: var(--type-body-sm);
  font-weight: 700;
  letter-spacing: 0.18em;
}

.product-name {
  border-left: var(--border-hairline) solid var(--color-border-strong);
  padding-left: var(--space-3);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.12em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.primary-nav a {
  display: inline-flex;
  min-height: var(--control-height);
  align-items: center;
  border-bottom: var(--border-hairline) solid transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.primary-nav a:hover,
.primary-nav a.active {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

.connection {
  display: flex;
  justify-self: end;
  align-items: baseline;
  gap: var(--space-2);
  margin: var(--space-0);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.connection span {
  color: var(--color-text-muted);
}

.connection strong {
  color: var(--color-text);
  font-weight: 500;
}

body[data-connection="checking"] .connection strong,
body[data-connection="partial"] .connection strong,
body[data-connection="offline"] .connection strong,
body[data-connection="unavailable"] .connection strong {
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: var(--space-1);
}

.network-rail {
  border-bottom: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
}

.network-rail-inner {
  display: flex;
  min-height: 2.25rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-1) max(var(--space-5), calc((100vw - var(--content-width)) / 2));
}

.network-notice {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.04em;
}

.authority-disclosure {
  position: relative;
}

.authority-disclosure summary {
  display: inline-flex;
  min-height: 1.75rem;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.04em;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.authority-disclosure summary:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.authority-disclosure[open] summary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.authority-disclosure .disclosure-content {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  z-index: 50;
  width: min(38rem, calc(100vw - (var(--space-4) * 2)));
  max-height: 80vh;
  overflow-y: auto;
  border: var(--border-hairline) solid var(--color-border-strong);
  background: var(--color-canvas);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
  box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.8);
}

.technical-specs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-0);
  padding: var(--space-0);
  list-style: none;
}

.technical-specs li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2);
  border: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.technical-specs li span {
  color: var(--color-text-muted);
}

.technical-specs li strong {
  color: var(--color-accent);
  font-weight: 500;
  overflow-wrap: anywhere;
}

.authority-vector-wrap {
  display: grid;
  gap: var(--space-2);
  border-top: var(--border-hairline) solid var(--color-border);
  padding-top: var(--space-3);
}

.disclosure-heading {
  margin: var(--space-0);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.authority-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-0);
}

.authority-grid > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.authority-grid dt {
  margin: var(--space-0);
  color: var(--color-text-muted);
}

.authority-grid dd {
  margin: var(--space-0);
  color: var(--color-accent);
  font-weight: 500;
}

.disclosure-boundary-note {
  margin: var(--space-0);
  border-top: var(--border-hairline) solid var(--color-border);
  padding-top: var(--space-3);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.technical-facts-panel {
  margin-top: var(--space-5);
  border: var(--border-hairline) solid var(--color-border-strong);
  background: var(--color-canvas);
}

.facts-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  user-select: none;
}

.facts-summary:hover {
  background: var(--color-surface-1);
}

.facts-body {
  border-top: var(--border-hairline) solid var(--color-border);
}
main {
  width: min(calc(100% - (var(--space-5) * 2)), var(--content-width));
  margin: var(--space-0) auto;
  padding: var(--space-5) 0 var(--space-8);
}

.page-header {
  display: grid;
  grid-template-columns: minmax(18rem, 0.42fr) minmax(30rem, 0.58fr);
  align-items: end;
  gap: var(--space-6);
  padding: var(--space-3) 0 var(--space-5);
}

.page-title > p:last-child {
  max-width: 48rem;
  margin-bottom: var(--space-0);
  color: var(--color-text-muted);
  font-size: var(--type-body-sm);
  line-height: var(--line-body-sm);
}

.eyebrow,
.search label,
.stat-strip article > span,
dt {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: var(--line-caption);
  text-transform: uppercase;
}

.eyebrow {
  margin-bottom: var(--space-1);
}

.search {
  display: grid;
  gap: var(--space-2);
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
}

.search input {
  width: 100%;
  min-height: var(--control-height);
  border: var(--border-hairline) solid var(--color-border-strong);
  border-right: var(--space-0);
  border-radius: var(--space-0);
  padding: var(--space-3) var(--space-4);
  outline: var(--space-0);
  background: var(--color-canvas);
  color: var(--color-accent);
  caret-color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--type-body-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.search input:hover,
.search input:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-surface-1);
}

.search input::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

.primary-button,
.secondary-button,
.micro-button,
.retry-button {
  display: inline-flex;
  min-height: var(--control-height);
  align-items: center;
  justify-content: center;
  border: var(--border-hairline) solid var(--color-accent);
  border-radius: var(--space-0);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.primary-button:hover:not(:disabled),
.primary-button:focus-visible,
.secondary-button:hover:not(:disabled),
.secondary-button:focus-visible,
.micro-button:hover:not(:disabled),
.micro-button:focus-visible,
.retry-button:hover:not(:disabled),
.retry-button:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.secondary-button,
.retry-button {
  border-color: var(--color-border-strong);
  background: transparent;
  color: var(--color-text);
}

.micro-button {
  min-height: var(--compact-control-height);
  border-color: var(--color-border);
  padding: var(--space-1) var(--space-2);
  background: transparent;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.micro-button[data-copy-state="success"] {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.field-help,
.inline-status {
  margin-bottom: var(--space-0);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.inline-status:empty {
  display: none;
}

.inline-status[data-state="loading"],
.inline-status[data-state="partial"],
.inline-status[data-state="error"],
.inline-status[data-state="success"] {
  color: var(--color-text);
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: var(--space-5);
  border-top: var(--border-hairline) solid var(--color-border-strong);
  border-left: var(--border-hairline) solid var(--color-border-strong);
}

.stat-strip article {
  display: grid;
  min-width: var(--space-0);
  min-height: var(--space-9);
  align-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-right: var(--border-hairline) solid var(--color-border-strong);
  border-bottom: var(--border-hairline) solid var(--color-border-strong);
}

.stat-strip strong,
.stat-value {
  min-width: var(--space-0);
  color: var(--color-accent);
  font-size: var(--type-title-sm);
  font-weight: 500;
  line-height: var(--line-title-sm);
  font-variant-numeric: tabular-nums;
}

.stat-strip small {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.stat-root .canonical-control {
  align-items: flex-start;
}

.panel {
  margin-top: var(--space-5);
  border: var(--border-hairline) solid var(--color-border-strong);
  background: var(--color-canvas);
}

.section-header,
.detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-hairline) solid var(--color-border);
}

.feed-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2) var(--space-3);
}

.feed-actions span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
  text-transform: uppercase;
}

.feed-actions span + span {
  border-left: var(--border-hairline) solid var(--color-border);
  padding-left: var(--space-3);
}

.table-region {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

table {
  width: 100%;
  border-collapse: collapse;
}

caption {
  padding: var(--space-2) var(--space-4);
  border-bottom: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
  text-align: left;
}

th,
td {
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--border-hairline) solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-surface-1);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: var(--line-caption);
  text-transform: uppercase;
}

td {
  font-size: var(--type-body-sm);
  line-height: var(--line-body-sm);
}

.operations tbody tr {
  transition: background var(--transition-fast);
}

.operations tbody tr:hover {
  background: var(--color-surface-1);
}

.operations td::before,
.responsive-table td::before {
  display: none;
}

.table-number,
.table-state,
.receipt-state {
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.receipt-state {
  color: var(--color-text-muted);
}

.table-state {
  color: var(--color-text);
  text-transform: uppercase;
}

.empty-state {
  min-height: var(--space-9);
  padding: var(--space-6);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-body-sm);
  line-height: var(--line-body);
  text-align: center;
}

.table-boundary,
.absence-note,
.detail-boundary {
  margin-bottom: var(--space-0);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-1);
  color: var(--color-text-muted);
  font-size: var(--type-body-sm);
  line-height: var(--line-body-sm);
}

.table-boundary,
.absence-note {
  border-top: var(--border-hairline) solid var(--color-border);
}

.absence-note strong,
.detail-boundary strong {
  color: var(--color-text);
  font-weight: 500;
}

.canonical-control {
  display: flex;
  min-width: var(--space-0);
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.canonical-value {
  min-width: var(--space-0);
  max-width: 100%;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
  overflow-wrap: anywhere;
}

.canonical-value[data-display="short"] {
  white-space: nowrap;
}

a.canonical-value {
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: var(--space-1);
}

a.canonical-value:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.facts-grid,
.key-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: var(--space-0);
  border-left: var(--border-hairline) solid var(--color-border);
}

.facts-grid > div,
.key-values > div {
  display: grid;
  min-width: var(--space-0);
  grid-template-columns: minmax(9rem, 0.34fr) minmax(0, 0.66fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-right: var(--border-hairline) solid var(--color-border);
  border-bottom: var(--border-hairline) solid var(--color-border);
}

.facts-grid dd,
.key-values dd {
  min-width: var(--space-0);
  margin-bottom: var(--space-0);
  font-size: var(--type-body-sm);
  line-height: var(--line-body-sm);
  overflow-wrap: anywhere;
}

.facts-grid code,
.key-values code {
  font-size: var(--type-caption);
}

.detail-view {
  margin-top: var(--space-0);
}

.detail-header {
  display: grid;
  align-items: stretch;
}

.detail-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
  text-transform: uppercase;
}

.detail-header nav a {
  color: var(--color-text);
  text-underline-offset: var(--space-1);
}

.detail-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.detail-content {
  min-width: var(--space-0);
}

.object-identity {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border-bottom: var(--border-hairline) solid var(--color-border);
}

.object-identity > span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.08em;
  line-height: var(--line-caption);
  text-transform: uppercase;
}

.detail-section {
  padding: var(--space-5) var(--space-4);
  border-top: var(--border-hairline) solid var(--color-border);
}

.detail-section:first-of-type {
  border-top: var(--space-0);
}

.detail-section > header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.detail-section > header p {
  margin-bottom: var(--space-0);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.state-transition {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-4);
  border-top: var(--border-hairline) solid var(--color-border);
  border-left: var(--border-hairline) solid var(--color-border);
}

.state-transition > div {
  display: grid;
  min-width: var(--space-0);
  gap: var(--space-2);
  padding: var(--space-4);
  border-right: var(--border-hairline) solid var(--color-border);
  border-bottom: var(--border-hairline) solid var(--color-border);
}

.state-transition > span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-title-sm);
}

.state-transition-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.responsive-table {
  border-top: var(--border-hairline) solid var(--color-border);
  border-left: var(--border-hairline) solid var(--color-border);
}

.responsive-table th,
.responsive-table td {
  border-right: var(--border-hairline) solid var(--color-border);
}

.responsive-table code {
  font-size: var(--type-caption);
  overflow-wrap: anywhere;
}

.canonical-disclosure {
  border-top: var(--border-hairline) solid var(--color-border-strong);
}

.canonical-disclosure summary {
  display: flex;
  min-height: var(--control-height);
  align-items: center;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.canonical-disclosure[open] summary {
  border-bottom: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
}

.canonical-data {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
}

.canonical-data > p {
  margin-bottom: var(--space-0);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
}

.canonical-data pre {
  max-width: 100%;
  max-height: 24rem;
  margin: var(--space-0);
  padding: var(--space-3);
  overflow: auto;
  border: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
  color: var(--color-text);
  font-size: var(--type-caption);
  line-height: var(--line-body-sm);
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  word-break: break-all;
}

.route-state {
  display: grid;
  max-width: 48rem;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-4);
}

.route-state h3,
.route-state p {
  margin-bottom: var(--space-0);
}

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

.route-state .retry-button {
  width: max-content;
}

.loading-line {
  min-height: var(--space-8);
  padding: var(--space-5) var(--space-4);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-body-sm);
  text-transform: uppercase;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-4) max(var(--space-5), calc((100vw - var(--content-width)) / 2));
  border-top: var(--border-hairline) solid var(--color-border);
  background: var(--color-surface-1);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
  line-height: var(--line-caption);
  text-transform: uppercase;
}

.handoff-page main {
  min-height: calc(100svh - var(--header-height));
}

.handoff-view {
  display: grid;
  max-width: 48rem;
  gap: var(--space-4);
  padding: var(--space-8) 0;
}

.handoff-view p {
  color: var(--color-text-muted);
}

@media (max-width: 89.999rem) {
  .site-header {
    grid-template-columns: minmax(14rem, 1fr) auto;
    gap: var(--space-2) var(--space-5);
  }

  .primary-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
  }

  .connection {
    grid-column: 2;
    grid-row: 1;
  }

  .network-rail {
    top: calc(var(--header-height) + var(--control-height));
  }

  .technical-specs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat-strip .stat-root {
    grid-column: span 2;
  }
}

@media (max-width: 63.999rem) {
  .site-header {
    position: static;
  }

  .network-rail {
    top: var(--space-0);
  }

  .page-header {
    grid-template-columns: 1fr;
  }

  .facts-grid,
  .key-values {
    grid-template-columns: 1fr;
  }

  .feed-actions {
    justify-content: flex-start;
  }

  .operations table,
  .operations tbody,
  .operations tr,
  .operations td {
    display: block;
    width: 100%;
  }

  .operations thead {
    position: absolute;
    width: var(--border-hairline);
    height: var(--border-hairline);
    margin: calc(var(--border-hairline) * -1);
    padding: var(--space-0);
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .operations caption {
    display: block;
    width: 100%;
  }


  .operations tbody {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--border-hairline);
    background: var(--color-border-strong);
  }

  .operations tbody tr {
    min-width: var(--space-0);
    background: var(--color-canvas);
  }

  .operations td {
    display: grid;
    min-height: var(--control-height);
    grid-template-columns: minmax(8rem, 0.38fr) minmax(0, 0.62fr);
    gap: var(--space-3);
    align-items: start;
    border-bottom-color: var(--color-border);
    white-space: normal;
  }

  .operations td::before {
    display: block;
    color: var(--color-text-muted);
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    letter-spacing: 0.06em;
    line-height: var(--line-caption);
    text-transform: uppercase;
  }

  .operations td[colspan] {
    display: block;
    grid-column: 1 / -1;
  }

  .operations td[colspan]::before {
    display: none;
  }

  .table-region {
    overflow-x: visible;
  }

  .state-transition {
    grid-template-columns: 1fr;
  }

  .state-transition > span {
    padding: var(--space-0) var(--space-4);
    transform: rotate(90deg);
    transform-origin: center;
  }
}

@media (max-width: 37.499rem) {
  .site-header {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .connection {
    grid-column: 1;
    grid-row: 2;
    justify-self: start;
    min-height: var(--control-height);
    align-items: center;
  }

  .primary-nav {
    display: grid;
    width: 100%;
    grid-column: 1;
    grid-row: 3;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-0);
    border-top: var(--border-hairline) solid var(--color-border);
    border-left: var(--border-hairline) solid var(--color-border);
  }

  .primary-nav a {
    justify-content: center;
    border-right: var(--border-hairline) solid var(--color-border);
    border-bottom-color: var(--color-border);
    padding: var(--space-1);
    letter-spacing: 0.06em;
  }

  .primary-nav a.active {
    background: var(--color-accent);
    color: var(--color-accent-contrast);
  }

  .network-rail-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
  }

  .authority-disclosure {
    width: 100%;
  }

  .authority-disclosure summary {
    width: 100%;
    justify-content: center;
  }

  .authority-disclosure .disclosure-content {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100vw;
    max-height: 85vh;
    border-right: none;
    border-left: none;
    border-bottom: none;
    z-index: 100;
  }

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

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

  main {
    width: calc(100% - (var(--space-4) * 2));
    padding-top: var(--space-4);
  }

  .page-header {
    gap: var(--space-4);
    padding-top: var(--space-0);
  }

  .search-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .search input {
    border-right: var(--border-hairline) solid var(--color-border-strong);
  }

  .stat-strip {
    grid-template-columns: 1fr;
  }

  .stat-strip article,
  .stat-strip .stat-root {
    min-height: var(--space-0);
    grid-column: auto;
    grid-template-columns: minmax(7rem, 0.4fr) minmax(0, 0.6fr);
    align-items: start;
    gap: var(--space-2) var(--space-3);
  }

  .stat-strip small {
    grid-column: 2;
  }

  .section-header,
  .detail-title-row,
  .detail-section > header {
    align-items: stretch;
    flex-direction: column;
  }

  .feed-actions {
    display: grid;
    width: 100%;
    gap: var(--space-2);
  }

  .feed-actions span + span {
    border-left: var(--space-0);
    padding-left: var(--space-0);
  }

  .operations tbody {
    grid-template-columns: 1fr;
  }

  .operations td {
    grid-template-columns: minmax(7rem, 0.38fr) minmax(0, 0.62fr);
    padding: var(--space-3);
  }

  .facts-grid > div,
  .key-values > div {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .canonical-control {
    align-items: stretch;
  }

  .canonical-control .canonical-value {
    flex: 1 1 100%;
  }

  .micro-button {
    min-height: var(--control-height);
  }

  .detail-content,
  .object-identity,
  .detail-section,
  .canonical-data,
  .route-state {
    padding-right: var(--space-3);
    padding-left: var(--space-3);
  }

  .responsive-table,
  .responsive-table tbody,
  .responsive-table tr,
  .responsive-table td {
    display: block;
    width: 100%;
  }

  .responsive-table thead {
    position: absolute;
    width: var(--border-hairline);
    height: var(--border-hairline);
    margin: calc(var(--border-hairline) * -1);
    padding: var(--space-0);
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .responsive-table tr {
    border-bottom: var(--border-hairline) solid var(--color-border-strong);
  }

  .responsive-table td {
    display: grid;
    grid-template-columns: minmax(7rem, 0.38fr) minmax(0, 0.62fr);
    gap: var(--space-3);
    border-right: var(--border-hairline) solid var(--color-border);
  }

  .responsive-table td::before {
    display: block;
    color: var(--color-text-muted);
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: var(--type-caption);
    letter-spacing: 0.06em;
    line-height: var(--line-caption);
    text-transform: uppercase;
  }

  footer {
    flex-direction: column;
    padding: var(--space-4);
  }
}

@media (max-width: 22.499rem) {
  .wordmark {
    letter-spacing: 0.12em;
  }

  .product-name {
    padding-left: var(--space-2);
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (forced-colors: active) {
  .site-header,
  .boundary-rail,
  .panel,
  .stat-strip,
  .stat-strip article,
  .primary-button,
  .secondary-button,
  .micro-button,
  .retry-button,
  .search input,
  .canonical-data pre {
    border-color: CanvasText;
  }

  .primary-button,
  .primary-nav a.active {
    forced-color-adjust: none;
  }
}