:root {
  --page: #f1f2f0;
  --surface: #fcfcfb;
  --sunken: #f4f5f3;
  --ink: #15171a;
  --ink-2: #4d5357;
  --ink-3: #777d82;
  --line: #dcdfdb;
  --line-strong: #b4b9b5;
  --edge: #747a7e;
  --edge-hyp: #9aa0a3;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--sans); font-size: 14px; line-height: 1.45; }
button, input, select { font: inherit; color: inherit; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
code { font-family: var(--mono); font-size: .93em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

/* Header */
.topbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; padding: 18px clamp(16px, 3vw, 40px) 14px; }
.brand-wrap { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.brand { text-decoration: none; font-size: 26px; font-weight: 750; letter-spacing: -.04em; }
.brand span { font-weight: 400; }
.tagline { color: var(--ink-2); font-size: 13px; }
.site-nav { display: flex; gap: 4px; margin-left: auto; font-size: 13px; }
.site-nav a { white-space: nowrap; padding: 6px 11px; border-radius: 7px; text-decoration: none; color: var(--ink-2); }
.site-nav a:hover { background: var(--surface); color: var(--ink); }
.site-nav a[aria-current="page"] { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: inset 0 0 0 1px var(--line-strong); }
.rule { border: 1px solid var(--line-strong); border-radius: 999px; padding: 5px 12px; font-size: 12px; background: var(--surface); white-space: nowrap; }

main { width: min(1480px, calc(100% - 32px)); margin: 0 auto; }

/* Controls */
.controls { display: grid; grid-template-columns: minmax(200px, 1fr) 215px 215px 190px auto auto; gap: 10px; align-items: center; padding: 4px 0 12px; }
.search-wrap input, select, .ghost-button { width: 100%; height: 38px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface); padding: 0 11px; }
.ghost-button { width: auto; padding: 0 16px; cursor: pointer; }
.ghost-button:hover { border-color: var(--ink); }
.toggle { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px; border: 1px dashed var(--line-strong); border-radius: 8px; background: var(--surface); cursor: pointer; white-space: nowrap; font-size: 13px; }
.toggle input { margin: 0; accent-color: var(--ink); }
#hypCount { color: var(--ink-3); }

/* Workspace */
.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 14px; align-items: start; }
.graph-card, .detail-card, .panel { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); }
.graph-card { min-width: 0; overflow: hidden; }
.graph-head { display: flex; justify-content: space-between; gap: 24px; padding: 16px 18px 12px; border-bottom: 1px solid var(--line); }
.graph-head h1 { font-size: 18px; letter-spacing: -.01em; }
.graph-head p, .panel-head p { color: var(--ink-2); font-size: 12.5px; margin-top: 4px; max-width: 62ch; }

.legend { display: grid; gap: 6px; font-size: 11.5px; color: var(--ink-2); max-width: 430px; flex: none; }
.legend-row { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; }
.legend-item { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.fam-chip { display: inline-flex; align-items: center; justify-content: center; width: 15px; height: 15px; border-radius: 3px; font-size: 9.5px; font-weight: 700; color: #fff; flex: none; }
.fam-chip.dark-text { color: var(--ink); }
.legend svg { flex: none; }

.graph-stage { position: relative; overflow-x: auto; }
#graphSvg { display: block; width: 100%; min-width: 1000px; height: auto; }

.lane-band { fill: rgba(21, 23, 26, .028); }
.lane-label { font-size: 11.5px; fill: var(--ink-2); text-anchor: middle; font-weight: 600; }
.year-label { font-size: 11px; fill: var(--ink-3); text-anchor: end; font-variant-numeric: tabular-nums; }
.year-line { stroke: var(--line); stroke-width: 1; stroke-dasharray: 1 5; }

.edge-line { fill: none; stroke: var(--edge); stroke-width: 1.3; marker-end: none; transition: opacity .12s; }
.edge-line.hypothesis { stroke: var(--edge-hyp); stroke-dasharray: 5 4; }
.edge-line.m-arrow { marker-end: url(#m-arrow); }
.edge-line.m-bar { marker-end: url(#m-bar); }
.edge-hit { fill: none; stroke: transparent; stroke-width: 12; cursor: pointer; }
.edge-group { cursor: pointer; outline: none; }
.edge-group:hover .edge-line, .edge-group.active .edge-line, .edge-group:focus-visible .edge-line { stroke: var(--ink); stroke-width: 2.2; }
.edge-group:hover .edge-line.m-arrow, .edge-group.active .edge-line.m-arrow, .edge-group:focus-visible .edge-line.m-arrow { marker-end: url(#m-arrow-on); }
.edge-group:hover .edge-line.m-bar, .edge-group.active .edge-line.m-bar, .edge-group:focus-visible .edge-line.m-bar { marker-end: url(#m-bar-on); }
.edge-group.faded { opacity: .12; }
.edge-group.dimmed { opacity: .1; }

.node { cursor: pointer; outline: none; transition: opacity .12s; }
.node .card { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1; }
.node:hover .card { stroke: var(--ink); }
.node.selected .card { stroke: var(--ink); stroke-width: 2.2; }
.node:focus-visible .card { stroke: var(--ink); stroke-width: 2.2; stroke-dasharray: 3 2; }
.node .node-name { font-size: 11px; font-weight: 650; fill: var(--ink); pointer-events: none; }
.node .node-byline { font-size: 10px; fill: var(--ink-2); pointer-events: none; }
.node .node-letter { font-size: 9.5px; font-weight: 700; fill: #fff; text-anchor: middle; pointer-events: none; }
.node .node-letter.dark-text { fill: var(--ink); }
.node.faded { opacity: .28; }
.node.dimmed { opacity: .16; }

.tooltip { position: absolute; z-index: 5; max-width: 300px; padding: 7px 9px; border-radius: 6px; background: var(--ink); color: #fff; font-size: 12px; line-height: 1.35; pointer-events: none; }
.tooltip small { display: block; opacity: .75; margin-top: 2px; }

/* Detail panel */
.detail-card { position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow: auto; padding: 18px; }
.detail-close { float: right; margin: -6px -6px 0 8px; width: 30px; height: 30px; border: 0; background: none; border-radius: 6px; font-size: 18px; line-height: 1; color: var(--ink-2); cursor: pointer; }
.detail-close:hover { background: var(--sunken); color: var(--ink); }
.empty-detail { color: var(--ink-2); display: grid; gap: 10px; }
.empty-detail h2 { font-size: 16px; color: var(--ink); }
.empty-detail ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
.kicker { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: 12px; color: var(--ink-2); }
.detail-title { font-size: 20px; line-height: 1.2; letter-spacing: -.01em; margin: 8px 0 3px; }
.detail-sub { font-size: 13px; color: var(--ink-2); }
.detail-id { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-top: 3px; overflow-wrap: anywhere; }
.quote { margin: 14px 0 0; padding: 11px 13px; border-left: 3px solid var(--ink); background: var(--sunken); }
.quote blockquote { margin: 0; font-family: var(--serif); font-size: 15px; line-height: 1.5; }
.quote figcaption { margin-top: 7px; font-size: 11.5px; color: var(--ink-2); }
.quote .flag { display: block; margin-top: 3px; color: var(--ink-3); }
.quote.missing { border-left-style: dashed; border-left-color: var(--line-strong); }
.quote.missing p { font-size: 13px; color: var(--ink-2); }
.sec { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 14px; }
.sec h3 { font-size: 12.5px; font-weight: 650; margin-bottom: 6px; }
.sec h3 small { font-weight: 400; color: var(--ink-3); }
.sec p { font-size: 13.5px; }
.sec p + p { margin-top: 6px; }
.zoo-voice { color: var(--ink-2); }
.pills { display: flex; flex-wrap: wrap; gap: 5px; }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; font-size: 11.5px; background: var(--surface); }
.pill.not { border-style: dashed; color: var(--ink-2); }
.pill.cond { border-style: dotted; border-color: var(--line-strong); }
.feature-rows { display: grid; gap: 7px; }
.feature-rows > div { display: grid; grid-template-columns: 96px 1fr; gap: 8px; align-items: start; font-size: 12px; color: var(--ink-2); }
.rel-list { display: grid; gap: 5px; }
.rel-group + .rel-group { margin-top: 10px; }
.rel-group > p { font-size: 11.5px; color: var(--ink-3); margin-bottom: 4px; }
.rel-btn { display: block; width: 100%; text-align: left; border: 1px solid var(--line); border-radius: 7px; padding: 6px 9px; background: var(--surface); font-size: 12.5px; cursor: pointer; }
.rel-btn:hover { border-color: var(--ink); }
.rel-btn.hypothesis { border-style: dashed; color: var(--ink-2); }
.rel-btn b { font-weight: 650; }
.link-btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line-strong); border-radius: 7px; padding: 6px 10px; background: var(--surface); font-size: 12.5px; text-decoration: none; cursor: pointer; }
.link-btn:hover { border-color: var(--ink); }
.case-line { display: grid; grid-template-columns: auto 1fr; gap: 4px 9px; align-items: start; font-size: 12.5px; }
.case-line + .case-line { margin-top: 9px; }
.case-line q, .verdict-row q { font-family: var(--serif); font-size: 13.5px; quotes: "“" "”"; }
.case-line .loc, .verdict-row .loc { display: block; color: var(--ink-3); font-size: 11.5px; margin-top: 2px; }
.chip { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--line-strong); border-radius: 5px; padding: 1px 6px; font-size: 11.5px; font-weight: 600; white-space: nowrap; background: var(--surface); }
.chip.no { color: var(--ink-2); }
.status-tag { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--ink); }
.status-tag svg { flex: none; }

/* Lower panels */
.panel { margin-top: 14px; padding: 16px 18px 18px; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 12px; }
.panel-head h2 { font-size: 16px; }
.panel-note { font-size: 12px; color: var(--ink-2); max-width: 52ch; text-align: right; }
.table-scroll { position: relative; overflow-x: auto; }
.index-table { border-collapse: collapse; width: 100%; min-width: 980px; font-size: 12.5px; }
.index-table th, .index-table td { padding: 7px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.index-table thead th { font-size: 11.5px; font-weight: 600; color: var(--ink-2); vertical-align: bottom; border-bottom-color: var(--line-strong); }
.index-table th.feat, .index-table td.feat { text-align: center; width: 74px; }
.index-table td.feat { font-size: 13px; }
.index-table td.year { font-variant-numeric: tabular-nums; color: var(--ink-2); }
.index-table tbody tr { cursor: pointer; }
.index-table tbody tr:hover { background: var(--sunken); }
.index-table tbody tr.selected { background: var(--sunken); box-shadow: inset 3px 0 0 var(--ink); }
.index-table .entry-name { font-weight: 650; }
.index-table .entry-by { color: var(--ink-2); font-size: 11.5px; }
.index-table .defines { display: flex; gap: 7px; align-items: flex-start; }
.feat-btn { border: 0; background: none; padding: 0; font: inherit; color: inherit; cursor: pointer; text-decoration: underline dotted; text-underline-offset: 3px; }
.feat-btn[aria-pressed="true"] { color: var(--ink); text-decoration: underline; font-weight: 700; }
.empty-row td { color: var(--ink-2); padding: 18px 8px; cursor: default; }

.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 10px; }
.case-card { border: 1px solid var(--line); border-radius: 8px; padding: 12px 13px; }
.case-card h3 { font-size: 13.5px; margin-bottom: 8px; }
.verdict-row { display: grid; grid-template-columns: 92px 1fr; gap: 8px; font-size: 12.5px; }
.verdict-row + .verdict-row { margin-top: 9px; padding-top: 9px; border-top: 1px solid var(--line); }
.who-btn { border: 0; background: none; padding: 0; font: inherit; font-weight: 650; cursor: pointer; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.who-btn:hover { text-decoration-color: var(--ink); }
.verdict-row .note { display: block; color: var(--ink-2); margin-top: 2px; }

footer { display: flex; justify-content: space-between; gap: 16px; padding: 18px clamp(16px, 3vw, 40px) 28px; color: var(--ink-2); font-size: 12px; }

/* Narrower screens: details become a sheet so the graph stays in view */
@media (max-width: 1180px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .detail-card { position: fixed; left: 0; right: 0; bottom: 0; top: auto; z-index: 30; max-height: 44vh; border-radius: 14px 14px 0 0; border-bottom: 0; box-shadow: 0 -8px 30px rgba(21, 23, 26, .16); display: none; }
  .detail-card.open { display: block; }
  .controls { grid-template-columns: 1fr 1fr; }
  .search-wrap { grid-column: 1 / -1; }
  .graph-head { flex-direction: column; gap: 12px; }
  .legend { max-width: none; }
}
@media (max-width: 700px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .rule { white-space: normal; }
  main { width: calc(100% - 16px); }
  .controls { grid-template-columns: 1fr; }
  .search-wrap { grid-column: auto; }
  .toggle { white-space: normal; height: auto; min-height: 38px; padding: 6px 12px; }
  .panel-head { flex-direction: column; align-items: flex-start; }
  .panel-note { text-align: left; }
  .cases-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* v0.4: trust levels, frames, commentary, slices */
#graphSvg { margin: 0 auto; }
.level { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: var(--ink-2); }
.level::before { content: ""; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--ink-3); background: transparent; }
.level-matched::before { background: linear-gradient(90deg, var(--ink-3) 50%, transparent 50%); }
.level-confirmed::before { background: var(--ink); border-color: var(--ink); }
.small { font-size: 12px !important; margin-top: 6px; }
.slice-link { margin-top: 10px; font-size: 12.5px; color: var(--ink-2); }
.frame { display: grid; grid-template-columns: 82px 1fr; gap: 2px 8px; margin: 6px 0 0; padding: 6px 8px; background: var(--sunken); border-radius: 6px; font-size: 11.5px; }
.frame dt { color: var(--ink-3); }
.frame dd { margin: 0; color: var(--ink-2); }
.comment { border-left: 2px solid var(--line-strong); padding: 2px 0 2px 10px; font-size: 12.5px; }
.comment + .comment { margin-top: 12px; }
.comment-who { color: var(--ink-2); margin-bottom: 3px; }
.comment q { font-family: var(--serif); font-size: 13.5px; quotes: "“" "”"; }
.comment .loc { display: block; color: var(--ink-3); font-size: 11.5px; margin: 2px 0 4px; }
.comment a { font-size: 12px; color: var(--ink-2); }
.case-family + .case-family { margin-top: 22px; }
.case-family > h3 { font-size: 14.5px; margin-bottom: 3px; }
.case-family > p { font-size: 12.5px; margin-bottom: 10px; max-width: 80ch; }
.case-card h4 { font-size: 13.5px; margin: 0 0 8px; }
.also { margin-top: 10px; padding-top: 9px; border-top: 1px solid var(--line); font-size: 12.5px; }
.also summary { cursor: pointer; color: var(--ink-2); margin-bottom: 8px; }
@media (max-width: 1180px) { .site-nav { margin-left: 0; } .controls { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .controls { grid-template-columns: 1fr; } .site-nav { flex-wrap: wrap; } }

/* Source list and reading pages */
main.narrow { width: min(1040px, calc(100% - 32px)); }
.panel.first { margin-top: 4px; }
.panel h1 { font-size: 26px; letter-spacing: -.02em; margin-bottom: 8px; }
.lede { font-size: 16px; line-height: 1.5; max-width: 70ch; margin-bottom: 8px; }
.src-controls { display: grid; grid-template-columns: minmax(180px, 1fr) 200px 160px 150px auto; gap: 8px; margin: 14px 0 10px; }
.src-theme h2 { font-size: 16px; margin-bottom: 6px; }
.src { padding: 12px 0; border-top: 1px solid var(--line); }
.src-cite { font-size: 13.5px; }
.src-cite a { text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.src-cite b { font-weight: 600; }
.src-key { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-right: 4px; }
.src-tags { display: flex; flex-wrap: wrap; gap: 5px; margin: 6px 0; }
.tag { border: 1px solid var(--line); border-radius: 5px; padding: 1px 7px; font-size: 11px; color: var(--ink-2); }
.tag.on { border-color: var(--ink); color: var(--ink); }
.src-note { font-size: 13px; color: var(--ink-2); max-width: 86ch; }
.src-note .alt { display: block; margin-top: 6px; padding-left: 10px; border-left: 2px solid var(--line-strong); }
@media (max-width: 900px) { .src-controls { grid-template-columns: 1fr 1fr; } .src-controls .search-wrap { grid-column: 1 / -1; } }

.reading { width: min(820px, calc(100% - 32px)); margin: 0 auto; }
.reading .panel { padding: 26px clamp(18px, 4vw, 40px) 30px; }
.reading h1 { font-size: 32px; letter-spacing: -.025em; line-height: 1.12; margin-bottom: 10px; }
.reading h2 { font-size: 20px; letter-spacing: -.01em; margin: 34px 0 10px; }
.reading h3 { font-size: 15px; margin: 22px 0 6px; }
.reading p, .reading li { font-size: 15.5px; line-height: 1.6; max-width: 68ch; }
.reading p + p { margin-top: 12px; }
.reading ul { padding-left: 20px; margin: 10px 0; }
.reading li + li { margin-top: 6px; }
.reading a.ref { text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }
.reading a.ref:hover { text-decoration-color: var(--ink); }
.status-box { border: 1px dashed var(--line-strong); border-radius: 8px; padding: 10px 13px; margin: 14px 0 4px; font-size: 13px; color: var(--ink-2); }
.status-box b { color: var(--ink); }
.reading .quote { margin: 14px 0; }
.reading .quote figcaption a { color: var(--ink-2); }
.zoo-reading { border-left: 3px solid var(--line-strong); padding: 2px 0 2px 14px; margin: 16px 0; color: var(--ink-2); }
.zoo-reading b { color: var(--ink); }
.vt { border-collapse: collapse; width: 100%; font-size: 13px; margin: 12px 0 6px; }
.vt th, .vt td { border-bottom: 1px solid var(--line); padding: 9px 8px; text-align: left; vertical-align: top; }
.vt thead th { font-size: 11.5px; color: var(--ink-2); font-weight: 600; border-bottom-color: var(--line-strong); }
.vt q { font-family: var(--serif); font-size: 14px; quotes: "“" "”"; }
.vt .loc { display: block; color: var(--ink-3); font-size: 11.5px; margin-top: 3px; }
.vt td.yr { font-variant-numeric: tabular-nums; color: var(--ink-2); white-space: nowrap; }
.vt .frame { background: none; padding: 0; margin: 0; grid-template-columns: 78px 1fr; }
.plain-table { border-collapse: collapse; width: 100%; font-size: 14px; margin: 12px 0; }
.plain-table th, .plain-table td { border-bottom: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }
.plain-table thead th { font-size: 12px; color: var(--ink-2); font-weight: 600; }
.hyp { border: 1px dashed var(--line-strong); border-radius: 8px; padding: 10px 13px; margin: 10px 0; }
.hyp p { font-size: 14px; }
.hyp .hyp-title { font-weight: 650; font-size: 14.5px; }
.table-wrap { overflow-x: auto; position: relative; }