:root {
  color-scheme: light;
  --ink: #141414;
  --muted: #585858;
  --line: #bcbcbc;
  --paper: #fff;
  --wash: #f5f5f3;
  --green: #315d49;
  --amber: #765620;
  --red: #8c3f37;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 14px/1.6 Arial, Helvetica, sans-serif; }
a { color: inherit; text-underline-offset: 4px; }
a, summary { touch-action: manipulation; }
a:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
::selection { background: var(--ink); color: var(--paper); }
.mono, code, pre { font-family: var(--mono); }
.muted, .source { color: var(--muted); }
.amber-text { color: var(--amber); }
.shell { max-width: 1440px; margin: auto; padding: 0 4%; }
main, .content { min-width: 0; }

/* Publication masthead, shared by every page. */
.masthead-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 26px 0; border-bottom: 3px solid var(--ink); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: 24px; font-weight: 750; letter-spacing: -.055em; line-height: 1.2; }
.brand small { display: block; margin-top: 5px; color: var(--muted); font: 10px/1.5 var(--mono); letter-spacing: .02em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: var(--paper); background: var(--ink); font: 24px var(--mono); flex: none; }
.edition-label { text-align: right; font: 10px/1.6 var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.masthead nav { display: flex; flex-wrap: wrap; gap: 0 28px; border-bottom: 1px solid var(--line); }
.masthead nav > a { display: inline-block; padding: 13px 0 11px; border-bottom: 2px solid transparent; text-decoration: none; font: 11px/1.6 var(--mono); }
.masthead nav > a:hover, .masthead nav > a.active { border-color: var(--ink); }
.masthead nav > a.active { font-weight: 700; }
.notice { display: flex; gap: 18px; padding: 10px 14px; margin-top: 20px; background: var(--ink); color: var(--paper); font: 11px/1.6 var(--mono); }
.notice strong { flex: none; font-weight: 700; }
.page-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; padding: 42px 0 32px; }
.eyebrow { color: var(--muted); font: 10px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
h1 { font-size: clamp(44px, 6.5vw, 84px); font-weight: 600; line-height: 1; letter-spacing: -.065em; margin: 18px 0; overflow-wrap: anywhere; }
h2 { font-size: 21px; line-height: 1.25; margin: 0; font-weight: 650; letter-spacing: -.04em; }
h3 { font-size: 17px; line-height: 1.4; margin: 0 0 10px; letter-spacing: -.025em; }
.subtitle { margin: 0; color: var(--muted); font-size: 16px; max-width: 55ch; }
.snapshot { flex: none; border-left: 1px solid var(--line); padding: 0 0 4px 24px; color: var(--muted); font: 10px/1.9 var(--mono); }
.snapshot b { color: var(--ink); font-weight: 500; }
.snapshot small { display: block; font-size: 10px; }
.card { background: var(--paper); border: 1px solid var(--line); }
.padded { padding: 22px 24px; }
.padded > p { font-size: 13px; }
section[id] { scroll-margin-top: 20px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding-top: 16px; margin: 36px 0 16px; border-top: 2px solid var(--ink); }
.section-head > span { color: var(--muted); font: 10px/1.6 var(--mono); }
h2 > .muted { font: 11px/1.6 var(--mono); letter-spacing: 0; }

/* Compact metric rail and declaration index. */
.summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--ink); }
.stat { padding: 18px 20px; border: 0; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat > span { color: var(--muted); font: 10px/1.6 var(--mono); }
.stat strong { display: block; margin-top: 12px; font-size: 42px; font-weight: 500; line-height: 1.1; letter-spacing: -.06em; font-variant-numeric: tabular-nums; }
.stat small { color: var(--muted); font: 14px var(--mono); letter-spacing: 0; }
.stat .measurement { font-size: 34px; line-height: 1.36; }
.stat p { color: var(--muted); font-size: 11px; margin: 10px 0 0; }
.dot { display: inline-block; width: 6px; height: 6px; margin-right: 5px; background: var(--green); }
.dot.red { background: var(--red); }
.table-card { border-left: 0; border-right: 0; }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.toolbar > .mono { font-size: 10px; }
.filters { display: flex; flex-wrap: wrap; gap: 4px; }
.filters > a { padding: 8px 12px; color: var(--muted); text-decoration: none; font: 11px/1.6 var(--mono); }
.filters > a:hover { background: var(--wash); color: var(--ink); }
.filters > a[aria-current] { background: var(--ink); color: var(--paper); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 780px; text-align: left; }
th { padding: 12px 14px; border-bottom: 1px solid var(--line); color: var(--muted); font: 10px/1.6 var(--mono); }
td { padding: 22px 14px; border-bottom: 1px solid var(--line); font-size: 12px; vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
.table-card th:first-child, .table-card td:first-child { padding-left: 0; }
.table-card th:last-child, .table-card td:last-child { padding-right: 0; }
tr[data-href] { cursor: pointer; }
tr[data-href]:hover, tr[data-href]:focus-within { background: var(--wash); }
.provider { display: flex; align-items: center; }
.provider-name { font-size: 26px; font-weight: 500; letter-spacing: -.045em; text-decoration: none; }
.provider-name:hover { text-decoration: underline; }
td small { display: block; margin-top: 6px; color: var(--muted); font-size: 10px; overflow-wrap: anywhere; }
td .amber-text { color: var(--amber); }
.overview-table { table-layout: fixed; }
.overview-table th:nth-child(1) { width: 25%; }
.overview-table th:nth-child(2) { width: 17%; }
.overview-table th:nth-child(3) { width: 24%; }
.overview-table th:nth-child(4) { width: 34%; }
.overview-table td { overflow-wrap: anywhere; }
.index-facts { margin: 0; }
.index-facts > div { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 10px; margin-bottom: 4px; }
.index-facts dt { color: var(--muted); font-size: 10px; }
.index-facts dd { min-width: 0; margin: 0; font: 12px/1.6 var(--mono); overflow-wrap: anywhere; }
.network-disclosure { min-width: 0; }
.network-disclosure > summary { width: fit-content; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.network-disclosure > summary:hover { color: var(--muted); }
.network-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: 6px 18px; max-height: 16rem; overflow-y: auto; margin: 10px 0 0; padding: 10px; list-style: none; border: 1px solid var(--line); background: var(--wash); }
.network-list > li { min-width: 0; overflow-wrap: anywhere; word-break: break-word; font: 12px/1.6 var(--mono); }
.status { display: inline-block; border: 1px solid currentColor; padding: 3px 7px; color: var(--muted); font: 11px/1.5 var(--mono); }
.status::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 6px; background: currentColor; }
.status.operational { color: var(--green); }
.status.degraded { color: var(--amber); }
.status.unavailable { color: var(--red); }
.table-foot { padding: 14px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; max-width: 95ch; }
.api-grid, .detail-lower { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.endpoints { display: grid; gap: 4px; margin-top: 18px; }
.endpoints > a { width: fit-content; padding: 6px 0; font: 11px/1.6 var(--mono); text-decoration: none; overflow-wrap: anywhere; }
.endpoints > a:hover { text-decoration: underline; }
.endpoints b { margin-right: 6px; font-size: 10px; }
.code-card { min-width: 0; background: var(--ink); color: var(--paper); }
.code-head { padding: 14px 20px; border-bottom: 1px solid #686868; font: 11px var(--mono); }
pre { font-size: 11px; line-height: 1.75; white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; padding: 18px 20px; }
.code-foot { padding: 0 20px 20px; color: #d0d0d0; font-size: 11px; }

/* Default profile: independent lists, then discrete scheme observations. */
.back { display: inline-block; padding: 8px 0; text-decoration: underline; font: 11px/1.6 var(--mono); }
.detail-title { display: flex; gap: 20px; align-items: center; margin-top: 20px; }
.avatar { display: grid; place-items: center; width: 52px; height: 52px; border: 1px solid var(--ink); font: 18px var(--mono); flex: none; }
.detail-title h1 { margin: 8px 0 12px; }
.endpoint-text { font-size: 11px; margin: 6px 0 0; overflow-wrap: anywhere; }
.detail-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--ink); }
.detail-kpis > div { min-width: 0; padding: 18px 20px; border-right: 1px solid var(--line); }
.detail-kpis > div:last-child { border-right: 0; }
.detail-kpis span { display: block; color: var(--muted); font: 10px/1.6 var(--mono); }
.detail-kpis strong { display: inline-block; margin-top: 10px; font: 500 22px/1.5 var(--mono); }
.detail-kpis strong.status, .detail-kpis .date-value { font-size: 11px; }
.detail-kpis small { display: block; margin-top: 8px; color: var(--muted); font-size: 10px; }
.declaration-summary dl { margin: 0; }
.declaration-summary dl > div { display: grid; grid-template-columns: 148px minmax(0, 1fr); gap: 24px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.declaration-summary dl > div:first-child { padding-top: 0; }
.declaration-summary dt { color: var(--muted); font: 11px/1.6 var(--mono); }
.declaration-summary dd { margin: 0; font: 14px/1.7 var(--mono); overflow-wrap: anywhere; }
.source { font-size: 11px !important; overflow-wrap: anywhere; }
.declaration-summary .source { margin: 16px 0 0; }
.summary-note { color: var(--muted); margin: 8px 0 0; max-width: 90ch; }
.stale-note { padding: 12px 14px; margin: 0 0 20px; border-left: 3px solid var(--amber); background: #faf6ee; color: var(--amber); }
.check-note { color: var(--muted); font-size: 12px; margin: 20px 0; overflow-wrap: anywhere; }

/* Elapsed-time geometry is unchanged. Shape, not color, carries the key. */
.timeline-intro { font-size: 12px !important; margin: 0 0 16px; color: var(--muted); }
.timeline-intro b { color: var(--ink); font-weight: 600; }
.timeline-scroll { overflow-x: auto; }
.support-chart { min-width: 800px; }
.time-axis, .support-lane { display: grid; grid-template-columns: 210px minmax(0, 1fr); }
.time-axis { padding: 12px 0; color: var(--muted); font: 10px/1.5 var(--mono); }
.axis-track { position: relative; height: 16px; margin: 0 7px; }
.axis-tick { position: absolute; transform: translateX(-50%); white-space: nowrap; }
.axis-tick.first { transform: none; }
.axis-tick.last { transform: translateX(-100%); }
.support-lane { min-height: 72px; border-top: 1px solid var(--line); }
.lane-name { display: flex; flex-direction: column; justify-content: center; padding: 8px 16px 8px 0; background: var(--paper); position: sticky; left: 0; z-index: 1; }
.lane-name strong { font: 600 12px/1.5 var(--mono); overflow-wrap: anywhere; }
.lane-name > span { font: 10px/1.5 var(--mono); color: var(--muted); margin: 3px 0; }
.lane-name small { color: var(--muted); font-size: 11px; }
.lane-track { position: relative; min-height: 72px; margin: 0 7px; }
.tick-line { position: absolute; top: 0; bottom: 0; width: 1px; background: #dedede; }
.lane-bar { position: absolute; top: 28px; height: 15px; min-width: 2px; border: 1px solid var(--ink); background: var(--ink); }
.lane-bar.kind, .timeline-legend .kind { background: var(--ink); border-color: var(--ink); }
.lane-bar.extension, .timeline-legend .extension { background: #fff; border-color: var(--ink); border-style: dashed; }
.lane-bar.uncertain, .timeline-legend .uncertain { background: repeating-linear-gradient(135deg, #fff, #fff 3px, #777 3px, #777 4px); border-color: #666; }
.lane-bar.removal, .timeline-legend .removal { border-color: var(--red); background: var(--red); width: 3px; min-width: 3px; height: 25px; top: 23px; transform: translateX(-2px); }
.timeline-legend { display: flex; flex-wrap: wrap; gap: 10px 24px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font: 10px/1.6 var(--mono); }
.timeline-legend > span { display: flex; align-items: center; gap: 8px; }
.timeline-legend i { width: 12px; height: 8px; display: inline-block; border: 1px solid; flex: none; }
.timeline-legend .removal { height: 11px; width: 3px; transform: none; }
.timeline-note { font-size: 11px !important; margin: 12px 0 0; color: var(--muted); max-width: 95ch; }
.scheme-chart { min-width: 620px; }
.scheme-chart .time-axis, .scheme-chart .support-lane { grid-template-columns: 180px minmax(0, 1fr); }
.scheme-chart .time-axis > span { position: sticky; left: 0; z-index: 1; background: var(--paper); }
.scheme-chart .support-lane, .scheme-chart .lane-track { min-height: 64px; }
.scheme-chart .lane-bar { top: 16px; min-width: 9px; height: 12px; transform: translateX(-50%); }
.scheme-chart .lane-bar.uncertain { top: 39px; height: 9px; transform: translateX(-50%) rotate(45deg); }
.scheme-legend .kind { width: 9px; height: 12px; margin: 0 2px; }
.scheme-legend .uncertain { width: 9px; height: 9px; margin: 0 2px; transform: rotate(45deg); }
.empty-state { margin: 0; padding: 16px 0 20px; color: var(--muted); font-size: 13px; }
.scheme-chart:not(:has(.support-lane)) { min-width: 0; }

/* Native disclosures keep the exact source material close, not dominant. */
.advanced-evidence { margin-top: 32px; }
.advanced-evidence > summary { cursor: pointer; padding: 18px 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); font: 600 13px/1.6 var(--mono); }
.advanced-evidence > summary:hover { background: var(--wash); }
.advanced-evidence > summary span { margin-left: 16px; font-size: 11px; font-weight: 400; }
.advanced-evidence[open] > summary { border-bottom-color: var(--ink); }
.capability-table { min-width: 900px; }
.capability-table td:first-child { min-width: 230px; max-width: 320px; overflow-wrap: anywhere; }
.basis { font: 11px var(--mono); padding: 3px 5px; border: 1px solid var(--line); }
.basis.observed { border-style: dashed; }
.detail-lower { margin-top: 28px; }
.detail-lower > section { min-width: 0; }
.light-code { background: var(--wash); border: 1px solid var(--line); color: var(--ink); }
.observation { border-left: 2px solid var(--ink); background: var(--wash); padding: 14px 18px; font-size: 13px; }
.text-link { display: inline-block; padding: 6px 0; font: 11px/1.6 var(--mono); }
.ledger details { border-bottom: 1px solid var(--line); }
.ledger details:last-child { border-bottom: 0; }
.ledger summary { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 16px; padding: 16px 20px; cursor: pointer; list-style: none; font-size: 12px; overflow-wrap: anywhere; }
.ledger summary::-webkit-details-marker { display: none; }
.ledger summary::before { content: "+"; font-family: var(--mono); }
.ledger details[open] summary::before { content: "−"; }
.ledger summary:hover { background: var(--wash); }
.ledger time { font-size: 11px; color: var(--muted); }
.ledger-tag { margin-left: auto; color: var(--muted); font: 10px var(--mono); }
.evidence-body { padding: 0 20px 20px; font-size: 12px; }
.standards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; margin-top: 28px; }
.standards-grid .card { border: 0; border-top: 1px solid var(--line); padding: 24px 0; }
.standards-grid h2 { margin-top: 10px; }
.semantics { margin-top: 28px; border: 0; border-top: 2px solid var(--ink); padding-left: 0; padding-right: 0; }
.semantics p { max-width: 95ch; }
footer { margin-top: 48px; padding: 18px 0 28px; border-top: 2px solid var(--ink); display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font: 10px/1.6 var(--mono); }
.skip { position: absolute; left: 12px; top: -80px; background: var(--ink); color: var(--paper); padding: 10px; z-index: 5; }
.skip:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 1050px) {
  .summary, .detail-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(2), .detail-kpis > div:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2), .detail-kpis > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .api-grid, .detail-lower { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .shell { padding: 0 20px; }
  .masthead-top { padding: 20px 0; }
  .brand { font-size: 21px; }
  .edition-label { font-size: 9px; }
  .masthead nav { gap: 0 20px; }
  .notice { flex-direction: column; gap: 2px; margin-top: 16px; }
  .page-head { align-items: start; flex-direction: column; padding: 32px 0 26px; gap: 20px; }
  h1 { font-size: clamp(42px, 9vw, 64px); }
  .snapshot { border-left: 0; padding: 0; }
  .section-head { align-items: start; flex-direction: column; gap: 6px; margin-top: 30px; }
  .toolbar { align-items: start; flex-direction: column; }
  /* One semantic table, stacked into ruled provider cards on small screens.
     Keep column headers available to assistive technology, not display:none. */
  .overview-table { display: block; min-width: 0; width: 100%; }
  .overview-table thead { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
  .overview-table tbody { display: block; }
  .overview-table tbody > tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
  .overview-table tbody > tr:last-child { border-bottom: 0; }
  .overview-table td { display: block; min-width: 0; padding: 0; border: 0; }
  .overview-table td:first-child, .overview-table td:last-child { grid-column: 1 / -1; }
  .overview-table td[data-label]::before { content: attr(data-label); display: block; margin-bottom: 6px; color: var(--muted); font: 10px/1.6 var(--mono); }
  .overview-table td:first-child::before { display: none; }
  .overview-table .index-facts { padding-top: 8px; border-top: 1px solid var(--line); }
  .detail-title { align-items: start; }
  .detail-title .avatar { display: none; }
  .padded { padding: 18px; }
  .declaration-summary dl > div { grid-template-columns: 124px minmax(0, 1fr); gap: 16px; }
  .standards-grid { grid-template-columns: 1fr; }
  .advanced-evidence > summary span { display: block; margin: 6px 0 0; }
  .ledger time { width: calc(100% - 30px); }
  .ledger summary > span { margin-left: 24px; }
  footer { flex-direction: column; gap: 4px; }
}
@media (max-width: 420px) {
  .shell { padding: 0 16px; }
  .brand { font-size: 20px; gap: 8px; }
  .brand-mark { width: 28px; height: 32px; }
  .edition-label { display: none; }
  .masthead nav { gap: 0 16px; }
  .masthead nav > a { font-size: 10px; }
  .stat { padding: 16px 12px; }
  .stat strong { font-size: 36px; }
  .stat .measurement { font-size: 28px; }
  .declaration-summary dl > div { grid-template-columns: 1fr; gap: 6px; }
  .detail-kpis { grid-template-columns: 1fr; }
  .detail-kpis > div:not(:last-child) { border-right: 0; border-bottom: 1px solid var(--line); }
}