:root {
  color-scheme: light;
  --bg: #f7f3ec;
  --panel: #fffdf9;
  --panel-2: #eee6da;
  --text: #241d19;
  --muted: #6d625b;
  --line: #d7c9ba;
  --accent: #9f161b;
  --accent-dark: #721014;
  --orange: #e97014;
  --gold: #d9a81b;
  --blue: #246a86;
  --green: #347255;
  --purple: #6f4b7e;
  --shadow: 0 18px 60px rgba(54, 36, 27, .12);
  --radius: 14px;
  --max: 1460px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 Georgia, 'Times New Roman', serif; }
button, input, select, textarea { font: inherit; color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-dark); }
.skip-link { position: fixed; left: 1rem; top: -6rem; z-index: 1000; background: var(--accent); color: white; padding: .7rem 1rem; }
.skip-link:focus { top: 1rem; }
.site-header { max-width: var(--max); margin: 0 auto; padding: 1.05rem 1.3rem; display: flex; gap: 2rem; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: .9rem; align-items: center; text-decoration: none; color: inherit; min-width: 0; }
.brand strong { display: block; color: var(--accent); font-size: clamp(1.65rem, 3vw, 2.45rem); line-height: .95; }
.brand small { display: block; margin-top: .35rem; color: var(--muted); font-family: Arial, sans-serif; font-size: .82rem; }
.brand-mark { width: 48px; height: 48px; position: relative; flex: 0 0 auto; }
.brand-mark i { position: absolute; width: 36px; height: 4px; border-radius: 4px; background: var(--accent); transform-origin: left center; left: 5px; top: 23px; }
.brand-mark i:nth-child(1) { transform: rotate(-42deg); }
.brand-mark i:nth-child(2) { transform: rotate(7deg); background: var(--orange); }
.brand-mark i:nth-child(3) { transform: rotate(48deg); background: var(--blue); }
.header-meta { display: flex; gap: .6rem; align-items: center; color: var(--muted); font-family: Arial, sans-serif; font-size: .78rem; text-align: right; }
.header-meta span:first-child { border: 1px solid var(--line); border-radius: 999px; padding: .35rem .65rem; color: var(--accent); font-weight: bold; }
.main-nav { position: sticky; top: 0; z-index: 50; border-block: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(14px); padding: .45rem max(1rem, calc((100vw - var(--max)) / 2 + 1.3rem)); display: flex; gap: .15rem; overflow-x: auto; }
.main-nav button { white-space: nowrap; border: 0; background: transparent; padding: .62rem .78rem; border-radius: 8px; font-family: Arial, sans-serif; cursor: pointer; }
.main-nav button:hover, .main-nav button.active { background: var(--panel-2); color: var(--accent); }
main { max-width: var(--max); margin: 0 auto; padding: 0 1.3rem 5rem; }
.view { display: none; }
.view.active { display: block; }
.hero { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, .65fr); gap: 2rem; padding: clamp(2.6rem, 7vw, 6.2rem) 0 3rem; align-items: start; }
.hero h1, .page-head h1 { font-size: clamp(2.6rem, 7vw, 6.2rem); line-height: .93; letter-spacing: -.045em; margin: .2rem 0 1.2rem; color: var(--accent); }
.page-head { max-width: 970px; padding: clamp(2.5rem, 6vw, 5.2rem) 0 2rem; }
.page-head h1 { font-size: clamp(2.7rem, 6vw, 5.1rem); }
.page-head > p:last-child { font-size: 1.15rem; color: var(--muted); max-width: 780px; }
.lede { font-size: clamp(1.2rem, 2vw, 1.55rem); max-width: 890px; }
.eyebrow { margin: 0 0 .55rem; color: var(--orange); text-transform: uppercase; letter-spacing: .12em; font: 700 .72rem/1.3 Arial, sans-serif; }
.principle { max-width: 900px; border-left: 4px solid var(--orange); background: var(--panel-2); padding: 1rem 1.15rem; border-radius: 0 var(--radius) var(--radius) 0; }
.hero-panel, .plain-panel, .card, .filter-panel, .journey-runner, .journey-list, .map-controls, .map-inspector, .contribution-form, .ask-form, .empty-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-panel { padding: 1.25rem; }
.metrics { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .7rem; }
.metric { padding: .8rem; background: var(--panel-2); border-radius: 10px; }
.metric strong { display: block; font-size: 1.65rem; color: var(--accent); line-height: 1; }
.metric span { display: block; margin-top: .35rem; color: var(--muted); font: .76rem/1.2 Arial, sans-serif; }
.smart-search { position: relative; }
.smart-search label, label { display: grid; gap: .35rem; font-family: Arial, sans-serif; font-size: .84rem; font-weight: 700; }
.smart-search.large { max-width: 910px; margin-top: 1.5rem; }
.search-control { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: .5rem; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); padding: .72rem .78rem; outline: none; }
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--orange) 45%, transparent); outline-offset: 2px; }
textarea { resize: vertical; }
button, .button { border: 1px solid var(--line); background: var(--panel); padding: .66rem .86rem; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; font-family: Arial, sans-serif; font-weight: 700; }
button:hover, .button:hover { border-color: var(--accent); color: var(--accent); }
.primary { background: var(--accent); border-color: var(--accent); color: white !important; }
.primary:hover { background: var(--accent-dark); }
.text-button { border: 0; background: transparent; color: var(--accent); padding: .25rem .35rem; }
.full { width: 100%; }
.suggestions { position: absolute; z-index: 80; top: calc(100% + .3rem); left: 0; right: 0; max-height: min(430px, 55vh); overflow: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); box-shadow: var(--shadow); }
.suggestion { width: 100%; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: .8rem; text-align: left; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: .72rem .8rem; background: transparent; }
.suggestion:last-child { border-bottom: 0; }
.suggestion:hover, .suggestion.active { background: var(--panel-2); }
.suggestion strong { display: block; font-family: Georgia, serif; }
.suggestion small { color: var(--muted); font-weight: normal; }
.quick-links { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .9rem; }
.chip { display: inline-flex; align-items: center; gap: .25rem; border: 1px solid var(--line); border-radius: 999px; padding: .35rem .62rem; background: var(--panel); color: var(--accent); font: 700 .78rem/1.2 Arial, sans-serif; cursor: pointer; text-decoration: none; }
.chip:hover { border-color: var(--accent); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin: 4rem 0 1rem; }
.section-head h2, .plain-panel h2, .author-strip h2 { color: var(--accent); margin: 0; font-size: clamp(1.65rem, 3vw, 2.45rem); line-height: 1.05; }
.card-grid { display: grid; gap: 1rem; }
.card-grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card { padding: 1rem; display: flex; flex-direction: column; min-height: 230px; }
.card h3 { font-size: 1.35rem; color: var(--accent); margin: .55rem 0; line-height: 1.1; }
.card p { margin: .25rem 0 1rem; }
.card footer { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: .7rem; }
.badges { display: flex; gap: .35rem; flex-wrap: wrap; }
.badge { border-radius: 999px; padding: .25rem .48rem; background: var(--panel-2); color: var(--muted); font: 700 .68rem/1 Arial, sans-serif; }
.badge.profile { background: color-mix(in srgb, var(--green) 18%, var(--panel)); color: var(--green); }
.badge.stub { background: color-mix(in srgb, var(--gold) 18%, var(--panel)); color: color-mix(in srgb, var(--gold) 75%, var(--text)); }
.badge.provisional { background: color-mix(in srgb, var(--orange) 16%, var(--panel)); color: var(--orange); }
.badge.supported { background: color-mix(in srgb, var(--blue) 16%, var(--panel)); color: var(--blue); }
.meta { color: var(--muted); font: .75rem/1.3 Arial, sans-serif; }
.small { color: var(--muted); font: .82rem/1.45 Arial, sans-serif; }
.author-strip { margin: 4rem 0 0; border-block: 1px solid var(--line); padding: 2rem 0; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 2rem; align-items: center; }
.button-stack { display: grid; gap: .6rem; }
.filter-panel { display: grid; grid-template-columns: minmax(260px, 2fr) repeat(3, minmax(145px, .65fr)) auto; gap: .7rem; align-items: end; padding: .85rem; position: sticky; top: 58px; z-index: 30; }
.results-line { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin: 1rem 0; }
.journey-layout { display: grid; grid-template-columns: 320px minmax(0,1fr); gap: 1rem; align-items: start; }
.journey-list { padding: .6rem; display: grid; gap: .4rem; position: sticky; top: 75px; }
.journey-choice { text-align: left; border: 0; padding: .75rem; background: transparent; }
.journey-choice.active, .journey-choice:hover { background: var(--panel-2); color: var(--accent); }
.journey-choice strong { display: block; font-family: Georgia, serif; }
.journey-choice small { display: block; color: var(--muted); margin-top: .25rem; }
.journey-runner { padding: 1.4rem; min-height: 540px; }
.journey-runner.empty { display: grid; place-content: center; text-align: center; color: var(--muted); }
.journey-step-head { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font: .78rem/1.3 Arial, sans-serif; }
.journey-runner h2 { color: var(--accent); font-size: clamp(1.9rem, 4vw, 3.2rem); margin: .4rem 0; }
.step-track { display: flex; flex-wrap: wrap; gap: .35rem; margin: 1rem 0; }
.step-track button { width: 35px; height: 35px; padding: 0; border-radius: 50%; }
.step-track button.active { background: var(--accent); color: white; border-color: var(--accent); }
.step-card { background: var(--panel-2); border-radius: var(--radius); padding: 1.2rem; margin: 1rem 0; }
.step-card h3 { color: var(--accent); font-size: 1.7rem; margin: 0 0 .5rem; }
.journey-actions { display: flex; justify-content: space-between; gap: .7rem; }
.map-layout { display: grid; grid-template-columns: 280px minmax(480px,1fr) 310px; gap: .8rem; min-height: 680px; }
.map-controls, .map-inspector { padding: .9rem; }
.map-controls { display: grid; align-content: start; gap: .75rem; }
.map-controls h3, .map-controls .control-heading { margin: 0; color: var(--accent); font-size: 1.17em; }
.map-controls hr { width: 100%; border: 0; border-top: 1px solid var(--line); }
.graph-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); min-height: 680px; overflow: hidden; cursor: grab; }
.graph-wrap.dragging { cursor: grabbing; }
#graphSvg { width: 100%; height: 100%; min-height: 680px; display: block; }
.graph-edge { stroke: color-mix(in srgb, var(--muted) 52%, transparent); stroke-width: 1.4; marker-end: url(#arrow); cursor: pointer; }
.graph-edge:hover, .graph-edge.selected { stroke: var(--orange); stroke-width: 3; }
.graph-edge.provisional { stroke-dasharray: 7 5; }
.graph-node { stroke: var(--panel); stroke-width: 2.5; cursor: pointer; }
.graph-node:hover, .graph-node.selected { stroke: var(--orange); stroke-width: 5; }
.graph-label { font: 700 13px Arial, sans-serif; fill: var(--text); paint-order: stroke; stroke: var(--panel); stroke-width: 4px; pointer-events: none; }
.map-inspector { overflow: auto; max-height: 680px; }
.map-inspector h2 { color: var(--accent); line-height: 1.05; }
.relation-statement { padding: .7rem 0; border-bottom: 1px solid var(--line); }
.relation-statement:last-child { border-bottom: 0; }
.path-result { display: grid; gap: .35rem; }
.path-step { display: inline-flex; align-items: center; gap: .35rem; flex-wrap: wrap; }
.ask-shell { display: grid; grid-template-columns: minmax(300px,.7fr) minmax(0,1.3fr); gap: 1rem; align-items: start; }
.ask-form { padding: 1rem; position: sticky; top: 75px; display: grid; gap: .7rem; }
.ask-results { display: grid; gap: 1rem; }
.empty-card { padding: 2rem; text-align: center; color: var(--muted); }
.ask-context { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; }
.ask-context h2 { color: var(--accent); }
.context-actions { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .8rem; }
.contribute-layout { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(280px,.6fr); gap: 1rem; align-items: start; }
.contribution-form { padding: 1rem; display: grid; gap: .9rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.check { display: flex; grid-template-columns: auto 1fr; align-items: flex-start; gap: .6rem; font-weight: normal; }
.check input { width: auto; margin-top: .2rem; }
.hidden { position: absolute; left: -9999px; }
.form-status { min-height: 1.5rem; color: var(--green); font-family: Arial, sans-serif; }
.plain-panel { padding: 1.2rem; }
.plain-panel h2 { font-size: 1.75rem; margin-bottom: .7rem; }
.plain-panel ol { padding-left: 1.3rem; }
.about-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.about-grid .wide { grid-column: span 3; }
.technical-details { margin-top: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.technical-details summary { cursor: pointer; padding: 1rem; color: var(--accent); font-weight: bold; }
.technical-details > div { padding: 0 1rem 1rem; }
.drawer { position: fixed; z-index: 120; top: 0; right: 0; width: min(780px, 94vw); height: 100dvh; background: var(--panel); border-left: 1px solid var(--line); box-shadow: var(--shadow); overflow: auto; transform: translateX(105%); transition: transform .22s ease; }
.drawer.open { transform: translateX(0); }
.drawer-close { position: sticky; z-index: 2; top: .7rem; float: right; margin: .7rem; }
.scrim { position: fixed; z-index: 110; inset: 0; background: rgba(0,0,0,.48); opacity: 0; pointer-events: none; transition: opacity .2s; }
.scrim.open { opacity: 1; pointer-events: auto; }
#drawerBody { padding: 3.8rem 1.2rem 3rem; }
.entry-head h1 { color: var(--accent); font-size: clamp(2.2rem, 5vw, 4.25rem); line-height: .94; margin: .3rem 0 1rem; }
.entry-definition { font-size: 1.22rem; background: var(--panel-2); border-radius: var(--radius); padding: 1rem; }
.entry-actions { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1rem 0; }
.entry-section { border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1rem; }
.entry-section h2 { color: var(--accent); font-size: 1.55rem; }
.link-list { display: grid; gap: .45rem; padding: 0; list-style: none; }
.link-list li { display: flex; gap: .45rem; align-items: flex-start; }
.source-card { border: 1px solid var(--line); border-radius: 10px; padding: .75rem; margin: .55rem 0; }
.source-card h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
.source-card p { margin: .25rem 0; }
.claim-card { border-left: 4px solid var(--purple); background: var(--panel-2); padding: .8rem; margin: .6rem 0; }
.relations-table { width: 100%; border-collapse: collapse; }
.relations-table td { padding: .65rem .3rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.relations-table td:first-child { width: 66%; }
.site-footer { max-width: var(--max); margin: 0 auto; border-top: 1px solid var(--line); padding: 1.4rem 1.3rem 2rem; display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-family: Arial, sans-serif; font-size: .82rem; }
.thanks { max-width: 720px; margin: 15vh auto; padding: 2rem; }
.thanks h1 { color: var(--accent); font-size: 4rem; margin: .2rem 0; }
@media (max-width: 1100px) {
  .card-grid.four { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .filter-panel { grid-template-columns: 2fr repeat(2,1fr); position: static; }
  .map-layout { grid-template-columns: 250px minmax(0,1fr); }
  .map-inspector { grid-column: 1 / -1; max-height: none; }
  .about-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .about-grid .wide { grid-column: span 2; }
}
@media (max-width: 760px) {
  .site-header { align-items: flex-start; }
  .header-meta { display: none; }
  .brand small { max-width: 250px; }
  main { padding-inline: .85rem; }
  .hero { grid-template-columns: 1fr; padding-top: 3rem; }
  .card-grid.three, .card-grid.four { grid-template-columns: 1fr; }
  .section-head { align-items: flex-start; }
  .author-strip { grid-template-columns: 1fr; }
  .filter-panel { grid-template-columns: 1fr; }
  .journey-layout, .ask-shell, .contribute-layout { grid-template-columns: 1fr; }
  .journey-list, .ask-form { position: static; }
  .map-layout { grid-template-columns: 1fr; }
  .graph-wrap, #graphSvg { min-height: 560px; }
  .two-col { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-grid .wide { grid-column: span 1; }
  .site-footer { flex-direction: column; }
  .drawer { width: 100vw; }
}
@media print {
  .main-nav, .site-header, .site-footer, .entry-actions, .drawer-close, .scrim { display: none !important; }
  body { background: white; color: black; }
  .view { display: block !important; break-after: page; }
  .drawer { position: static; transform: none; width: auto; height: auto; box-shadow: none; border: 0; }
}

/* GitHub public alpha interaction refinements */
.hero-actions, .button-row, .button-row.wrap { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: .9rem; }
.inline-concept { display: inline; font: inherit; font-weight: 700; padding: 0 .12rem; vertical-align: baseline; }
#arrow path { fill: var(--muted); }
.graph-edge-group, .graph-node-group { cursor: pointer; }
.graph-edge-hit { stroke: var(--text); stroke-opacity: .001; stroke-width: 18; pointer-events: stroke; }
.graph-edge-group:hover .graph-edge,
.graph-edge-group:focus .graph-edge { stroke: var(--orange); stroke-width: 3; }
.graph-node-group:hover .graph-node,
.graph-node-group:focus .graph-node,
.graph-node-group.selected .graph-node { stroke: var(--orange); stroke-width: 5; }
.graph-node-group:focus { outline: none; }
.graph-node-group.path-node .graph-node { stroke: var(--purple); stroke-width: 4; }
.graph-node-group:hover .graph-label,
.graph-node-group:focus .graph-label,
.graph-label:not(.dense-hidden) { opacity: 1; }
.graph-label { pointer-events: visiblePainted; cursor: pointer; transition: opacity .12s ease; }
.graph-label.dense-hidden { opacity: 0; }
.graph-edge-group:focus .graph-edge,
.graph-node-group:focus .graph-node { filter: drop-shadow(0 0 4px color-mix(in srgb, var(--orange) 65%, transparent)); }
.form-status { padding-top: .25rem; }
.form-status:empty { padding: 0; }
@media (max-width: 760px) {
  .hero-actions > *, .button-row.wrap > * { flex: 1 1 100%; }
  .graph-label { font-size: 15px; }
}

/* Explicit reader-controlled colour theme. Light is the default. */
.theme-toggle{display:inline-flex;align-items:center;gap:.42rem;cursor:pointer;font:700 .76rem/1 Arial,sans-serif;color:var(--muted);white-space:nowrap}.theme-toggle input{position:absolute;opacity:0;pointer-events:none;width:1px;height:1px}.theme-toggle-track{width:2.4rem;height:1.35rem;padding:.14rem;border:1px solid var(--line);border-radius:999px;background:var(--panel-2);display:inline-flex;align-items:center;transition:background .15s ease}.theme-toggle-knob{width:.92rem;height:.92rem;border-radius:50%;background:var(--accent);transform:translateX(0);transition:transform .15s ease}.theme-dark-label{display:none}.theme-toggle:has(input:checked) .theme-toggle-knob{transform:translateX(1rem)}.theme-toggle:has(input:checked) .theme-light-label{display:none}.theme-toggle:has(input:checked) .theme-dark-label{display:inline}body:has(#themeToggle:checked){color-scheme:dark;--bg:#181412;--panel:#211b18;--panel-2:#302720;--text:#f4eee6;--muted:#c2b4aa;--line:#4f4037;--accent:#e45a5d;--accent-dark:#ff7779;--orange:#ff9845;--gold:#e7bf4a;--blue:#68b0cf;--green:#79b697;--purple:#b696c0;--shadow:0 18px 60px rgba(0,0,0,.35)}@media(max-width:760px){.site-header{gap:.65rem}.theme-toggle{margin-left:auto}}

/* Pass 5: disclose relationship basis without adding lines to the map canvas. */
.connection-basis { line-height: 1.15; white-space: normal; }
.connection-basis.source-established,
.connection-basis.sourced { background: color-mix(in srgb, var(--blue) 16%, var(--panel)); color: var(--blue); }
.connection-basis.interpretation { background: color-mix(in srgb, var(--purple) 18%, var(--panel)); color: color-mix(in srgb, var(--purple) 78%, var(--text)); }
.connection-basis.inference { background: color-mix(in srgb, var(--orange) 16%, var(--panel)); color: var(--orange); }
.connection-basis.inherited,
.connection-basis.maintained { border: 1px solid var(--line); background: transparent; color: var(--muted); }
.relationship-key { margin: .45rem 0 .2rem; padding: .55rem .65rem; border-left: 3px solid var(--purple); background: var(--panel-2); border-radius: 0 8px 8px 0; }
.relation-statement .connection-basis { margin: .45rem .25rem .15rem 0; }
.relation-inspection-basis { padding: .75rem; background: var(--panel-2); border-radius: 10px; }
.relation-inspection-basis p { margin: .25rem 0; }