:root {
  --bg: #bfffe6;
  --surface: #b5f2d9;
  --border: #9bd2ba;
  --text: #101f0c;
  --muted: #4e705a;
  --primary: #b85e00;
  --secondary: #a77d90;
  --accent: #172713;
  --paper-light: #cdffed;
  --paper-dark: #a8e5cc;
  --focus: #7b3f00;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --sans: Inter, ui-sans-serif, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--text); background-color: var(--bg); font-family: var(--sans); line-height: 1.5;
  background-image: radial-gradient(circle at 15% 25%, rgb(16 31 12 / .045) 0 1px, transparent 1.4px), linear-gradient(90deg, transparent 49.8%, rgb(23 39 19 / .025) 50%, transparent 50.2%);
  background-size: 11px 13px, 53px 100%;
}
button, input { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
[hidden] { display: none !important; }
.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; }

.masthead { min-height: 72px; border-bottom: 1px solid var(--accent); display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px clamp(20px, 5vw, 72px); }
.brand { font-family: var(--serif); font-weight: 700; font-size: clamp(1rem, 2vw, 1.25rem); text-decoration: none; }
.brand span { color: var(--primary); font-variant-numeric: tabular-nums; margin-right: 8px; }
.issue { margin: 0; color: var(--muted); font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; }
main { width: min(1440px, 100%); margin: 0 auto; }
.intro { max-width: 920px; min-height: calc(100vh - 150px); display: grid; align-content: center; padding: clamp(70px, 12vw, 150px) clamp(20px, 6vw, 84px); }
.kicker { margin: 0 0 8px; color: var(--primary); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.08; }
h1 { margin: 0; max-width: 790px; font-size: clamp(3rem, 8vw, 7rem); letter-spacing: -.055em; }
.dek { max-width: 690px; margin: 28px 0 38px; font-family: var(--serif); font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
.preflight { border-top: 4px double var(--accent); border-bottom: 1px solid var(--accent); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.preflight p { margin: 0; max-width: 480px; color: var(--muted); font-size: .85rem; }
.primary-button, .secondary-button { min-height: 44px; border: 1px solid var(--accent); padding: 11px 18px; cursor: pointer; font-weight: 750; }
.primary-button { color: var(--bg); background: var(--accent); }
.primary-button:hover { background: #2a3d26; }
.secondary-button { background: transparent; }
.secondary-button:hover { background: var(--paper-light); }
.method-note { margin: 16px 0 0; color: var(--muted); font-size: .76rem; }
.snapshot-line { border-top: 4px double var(--accent); border-bottom: 1px solid var(--accent); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.snapshot-line span, .snapshot-badge { color: var(--muted); font-size: .78rem; letter-spacing: .04em; text-transform: uppercase; }

.progress-panel, .error-panel { width: min(760px, calc(100% - 40px)); min-height: 320px; margin: clamp(60px, 12vw, 150px) auto; padding: clamp(30px, 6vw, 64px); border: 1px solid var(--accent); background: var(--surface); box-shadow: 9px 9px 0 var(--border); }
.progress-panel h2, .error-panel h2 { font-size: clamp(2rem, 4vw, 3.5rem); margin: 0 0 16px; }
.progress-detail { color: var(--muted); }
.progress-track { height: 5px; background: var(--border); margin-top: 44px; overflow: hidden; }
.progress-track span { display: block; width: 10%; height: 100%; background: var(--primary); transition: width 220ms ease; }

.results { padding: 48px clamp(16px, 4vw, 60px) 80px; }
.results-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.results-heading h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.4rem); }
.ontology-plate { width: min(920px, 100%); min-height: 575px; margin: 0 auto 42px; display: grid; grid-template-rows: auto 1fr auto; border: 2px solid var(--accent); background: var(--paper-light); box-shadow: 12px 12px 0 rgb(23 39 19 / .15); }
.plate-header, .plate-footer { display: flex; justify-content: space-between; gap: 20px; padding: 14px 20px; font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }
.plate-header { border-bottom: 4px double var(--accent); }
.plate-header p, .plate-footer p { margin: 0; }
.plate-name { font-family: var(--serif); font-size: 1rem; font-weight: 700; text-transform: none; }
.plate-meta { text-align: right; color: var(--muted); }
.plate-meta p { margin: 0; }
.plate-body { padding: clamp(28px, 6vw, 60px); display: grid; align-content: center; }
.plate-parent { min-height: 1.5em; margin: 0 0 18px; color: var(--muted); font-family: var(--serif); font-style: italic; }
.plate-focus { display: grid; grid-template-columns: auto 1fr; align-items: start; gap: 18px; border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent); padding: 26px 0; }
.plate-number { color: var(--primary); font-family: var(--serif); font-size: clamp(2rem, 6vw, 4.5rem); line-height: .9; font-variant-numeric: tabular-nums; }
.plate-focus h3 { margin: 0; font-size: clamp(1.55rem, 3.8vw, 3rem); font-weight: 500; }
.plate-relations { margin-top: 18px; display: grid; gap: 8px; }
.plate-relation { display: grid; grid-template-columns: 110px 1fr auto; gap: 12px; align-items: baseline; padding-top: 7px; border-top: 1px solid var(--border); font-family: var(--serif); }
.plate-relation .relation-label { font-family: var(--sans); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.plate-relation small { color: var(--muted); }
.plate-footer { border-top: 4px double var(--accent); color: var(--muted); }

.workspace { display: grid; grid-template-columns: minmax(300px, .9fr) minmax(330px, 1fr) minmax(280px, .82fr); border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent); }
.workspace > * { min-width: 0; padding: 24px; }
.workspace > * + * { border-left: 1px solid var(--accent); }
.panel-heading { min-height: 57px; display: flex; align-items: start; justify-content: space-between; gap: 12px; border-bottom: 4px double var(--accent); }
.panel-heading h3, .source-panel h3 { margin: 0; font-size: 1.45rem; }
.text-button { border: 0; border-bottom: 1px solid currentColor; padding: 3px 0; background: transparent; cursor: pointer; font-size: .75rem; }
.toggle { font-size: .75rem; display: flex; align-items: center; gap: 5px; cursor: pointer; }
.ledger { list-style: none; padding: 0; margin: 10px 0 0; }
.ledger-group { border-bottom: 1px solid var(--border); }
.ledger-row { display: grid; grid-template-columns: 34px 1fr; gap: 8px; width: 100%; min-height: 48px; border: 0; padding: 10px 8px; text-align: left; background: transparent; cursor: pointer; }
.ledger-row:hover, .ledger-row[aria-current="true"] { background: rgb(205 255 237 / .7); }
.ledger-number { color: var(--primary); font-family: var(--serif); font-weight: 700; font-variant-numeric: tabular-nums; }
.ledger-claim { font-family: var(--serif); line-height: 1.3; }
.ledger-meta { display: block; margin-top: 4px; color: var(--muted); font-family: var(--sans); font-size: .65rem; text-transform: uppercase; letter-spacing: .06em; }
.ledger-children { list-style: none; margin: 0 0 8px 18px; padding: 0 0 0 12px; border-left: 1px solid var(--secondary); }
.legend { display: flex; flex-wrap: wrap; gap: 12px; list-style: none; padding: 16px 0 10px; margin: 0; font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; }
.legend li { display: flex; align-items: center; gap: 5px; }
.line-key { width: 28px; height: 8px; display: inline-block; border-top: 2px solid var(--accent); }
.line-key.tension { border-top-style: double; border-top-width: 4px; }
.line-key.qualification { border-top-style: dashed; }
.relationship-note { margin: 0 0 12px; color: var(--muted); font-size: .75rem; }
.relation-retry { margin: 0 0 14px; }
.relationship-list { list-style: none; margin: 0; padding: 0; }
.relationship-button { width: 100%; min-height: 54px; border: 0; border-top: 1px solid var(--border); padding: 10px 7px; background: transparent; text-align: left; cursor: pointer; }
.relationship-button:hover, .relationship-button[aria-current="true"] { background: var(--paper-light); }
.relationship-type { display: block; font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.relationship-pair { display: block; margin-top: 3px; font-family: var(--serif); }
.relationship-reason { display: block; margin-top: 5px; color: var(--muted); font-size: .74rem; line-height: 1.4; }
.source-panel { background: rgb(181 242 217 / .55); }
.inspector-number { margin: 14px 0 5px; color: var(--primary); font-family: var(--serif); font-size: 2.2rem; }
.inspector-claim { margin: 0 0 22px; font-family: var(--serif); font-size: 1.3rem; line-height: 1.3; }
.source-card { border-top: 4px double var(--accent); padding-top: 16px; }
.source-card blockquote { margin: 10px 0; font-family: var(--serif); }
.source-archive { margin-top: 22px; }
.source-archive > h3 { padding-top: 18px; border-top: 4px double var(--accent); }
.archive-note, .media-note { color: var(--muted); font-size: .72rem; }
.source-card { margin-top: 18px; }
.js .source-card[hidden] { display: none !important; }
.source-card time, .source-label, .inspector-links { color: var(--muted); font-size: .72rem; }
.source-link { display: inline-block; min-height: 44px; padding-top: 11px; font-weight: 750; }
.relation-explanation { font-family: var(--serif); font-size: 1.05rem; }
.empty-note { color: var(--muted); font-style: italic; }
.mobile-tabs { display: none; }
.site-footer { border-top: 1px solid var(--accent); padding: 20px clamp(20px, 5vw, 72px); display: flex; justify-content: space-between; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }
.site-footer p { margin: 0; }

@media (max-width: 900px) {
  .ontology-plate { min-height: 0; aspect-ratio: auto; }
  .workspace { grid-template-columns: 1fr; border: 1px solid var(--accent); }
  .workspace > * + * { border-left: 0; }
  .js .workspace > * { display: none; }
  .js .workspace > .active-panel { display: block; }
  .mobile-tabs { position: sticky; top: 0; z-index: 5; display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 26px; background: var(--bg); border: 1px solid var(--accent); }
  .mobile-tabs button { min-height: 46px; border: 0; background: transparent; cursor: pointer; }
  .mobile-tabs button[aria-selected="true"] { color: var(--bg); background: var(--accent); }
}
@media (max-width: 600px) {
  .masthead { align-items: flex-start; } .issue { max-width: 150px; text-align: right; }
  .intro { min-height: auto; padding-top: 72px; padding-bottom: 90px; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.5rem); }
  .preflight, .snapshot-line, .results-heading { align-items: stretch; flex-direction: column; }
  .results { padding-inline: 12px; }
  .plate-header, .plate-footer { gap: 8px; padding: 11px 12px; font-size: .6rem; }
  .plate-body { padding: 24px 16px; }
  .plate-focus { grid-template-columns: 1fr; gap: 8px; }
  .plate-number { font-size: 2.4rem; }
  .plate-focus h3 { font-size: 1.55rem; }
  .plate-relation { grid-template-columns: 90px 1fr; }
  .plate-relation small { grid-column: 2; }
  .workspace > * { padding: 18px 14px; }
  .site-footer { gap: 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .progress-track span { transition: none; } }