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.topic-list{padding:5px 8px 12px 18px}.topic-link{display:flex;gap:9px;width:100%;border:0;background:transparent;color:var(--muted);text-align:left;padding:8px 5px;font-size:13px;line-height:1.35;cursor:pointer}.topic-link span{color:var(--accent);font-weight:800}.topic-link.active{color:var(--ink);font-weight:700}.shell.nav-hidden{grid-template-columns:0 minmax(550px,1fr) 286px}.shell.nav-hidden .sidebar{visibility:hidden;overflow:hidden;padding:0}.toc-section{padding-left:23px!important}.toc-topic.current{background:var(--soft)!important;color:var(--ink)!important;font-weight:700}@media(max-width:1180px){.shell.nav-hidden{grid-template-columns:0 1fr}}@media(max-width:760px){.shell.nav-hidden{display:block}.shell.nav-hidden .sidebar{visibility:visible;padding:25px 14px}}
.relation-map{margin:46px -38px;padding:30px 32px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--raised),var(--surface));box-shadow:var(--shadow);font-family:var(--sans)}.relation-map h2{font:700 1.7rem/1.2 var(--serif);margin:0 0 10px}.relation-map>p{color:var(--muted);line-height:1.55}.relation-layout{display:grid;grid-template-columns:minmax(240px,.8fr) minmax(300px,1.2fr);gap:30px;margin-top:26px}.relation-layout>div{min-width:0}.relation-layout h3{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.relation-matrix{display:grid;grid-template-columns:repeat(var(--matrix-size),minmax(38px,1fr));gap:5px;align-items:center}.relation-matrix>b{text-align:center;color:var(--muted);font-size:13px}.matrix-cell{aspect-ratio:1;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--muted);font-weight:800;cursor:pointer;transition:.15s ease}.matrix-cell:hover{border-color:var(--accent);transform:translateY(-1px)}.matrix-cell.on{background:var(--accent);border-color:var(--accent);color:#062a2d;box-shadow:0 5px 16px color-mix(in srgb,var(--accent) 35%,transparent)}.relation-graph{width:100%;min-height:220px;border-radius:12px;background:color-mix(in srgb,var(--soft) 58%,var(--bg))}.relation-edge{stroke:var(--accent);stroke-width:2.3;fill:none}.relation-graph marker path{fill:var(--accent)}.relation-node circle{fill:var(--raised);stroke:var(--ink);stroke-width:2}.relation-node text{fill:var(--ink);text-anchor:middle;font-weight:800;font-size:15px}.relation-pairs{margin-top:16px;padding:13px 16px;border-radius:9px;background:var(--soft);font-size:14px;overflow-wrap:anywhere}.relation-map .translation,.visual .translation{background:color-mix(in srgb,var(--soft) 70%,transparent);border-color:var(--accent)}body.dark .matrix-cell.on{color:#061c21}@media(max-width:760px){.relation-map{margin:38px -14px;padding:23px 17px}.relation-layout{grid-template-columns:1fr;gap:20px}.relation-matrix{max-width:320px}.relation-graph{min-height:190px}}
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.lattice-node.lower circle{fill:color-mix(in srgb,var(--gold) 32%,var(--raised))}.lattice-node.upper circle{stroke:var(--accent);stroke-width:5}.lattice-node.extreme circle{fill:var(--gold);stroke:var(--accent);stroke-width:6}
.complete-top{margin-left:auto!important;border:1px solid var(--line)!important;border-radius:999px!important;padding:6px 11px!important;color:var(--muted)!important}.complete-top.complete{background:var(--soft)!important;color:var(--accent)!important;border-color:var(--accent)!important}.topic-link.complete{color:var(--muted)}.topic-link.complete span{color:#2b9b70}.sidebar{overflow-y:auto}@media(max-width:760px){.complete-top span{display:none}.complete-top{margin-left:auto!important}.bookmark-top{margin-left:0}}
.complexity-lab{margin:46px -38px;padding:30px 32px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--raised),var(--surface));box-shadow:var(--shadow);font-family:var(--sans)}.complexity-lab h2{font:700 1.7rem/1.2 var(--serif);margin:0 0 10px}.complexity-lab>p{color:var(--muted)}.complexity-controls{margin:24px 0}.complexity-controls label{display:flex;justify-content:space-between;font-weight:700}.complexity-slider{width:100%;accent-color:var(--accent)}.complexity-bars{display:grid;gap:10px}.complexity-row{display:grid;grid-template-columns:95px 1fr 110px;gap:12px;align-items:center}.complexity-row>span{font-weight:700}.complexity-row i{height:22px;width:calc(var(--bar)*100%);min-width:4px;border-radius:5px;background:linear-gradient(90deg,var(--accent),var(--gold));transition:width .2s}.complexity-row b{text-align:right;font-variant-numeric:tabular-nums}.complexity-note{padding:13px 16px;border-radius:9px;background:var(--soft);font-size:14px}.complexity-lab .translation{background:color-mix(in srgb,var(--soft) 70%,transparent)}@media(max-width:760px){.complexity-lab{margin:38px -14px;padding:23px 17px}.complexity-row{grid-template-columns:72px 1fr 80px;font-size:13px}}
.closure-lab{margin:46px -38px;padding:30px 32px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--raised),var(--surface));box-shadow:var(--shadow);font-family:var(--sans)}.closure-lab h2{font:700 1.7rem/1.2 var(--serif);margin:0 0 10px}.closure-lab>p{color:var(--muted)}.closure-seeds{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:22px 0 14px}.closure-seeds button,.closure-actions button{border:1px solid var(--line);background:var(--raised);color:var(--ink);padding:8px 12px;border-radius:9px;cursor:pointer}.closure-seeds button.active{background:var(--accent);border-color:var(--accent);color:#062a2d}.closure-rules{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.closure-rules div{padding:11px;border:1px solid var(--line);border-radius:9px;color:var(--muted)}.closure-rules div.ready{border-color:var(--gold);background:var(--warm);color:var(--ink)}.closure-rules div.done{opacity:.62}.closure-state{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin:18px 0;padding:16px;border-radius:11px;background:var(--soft)}.closure-state span{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;border:2px solid var(--line);font-weight:800}.closure-state span.in{background:var(--accent);border-color:var(--accent);color:#062a2d}.closure-state b{margin-left:auto;font-size:13px}.closure-actions{display:flex;gap:8px;flex-wrap:wrap}.closure-actions button:first-child,.closure-actions button:nth-child(2){color:var(--accent);border-color:var(--accent)}.closure-trace{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:var(--muted)}.closure-trace span{padding:7px 10px;border-radius:7px;background:var(--bg)}.closure-lab .translation{background:color-mix(in srgb,var(--soft) 70%,transparent)}@media(max-width:760px){.closure-lab{margin:38px -14px;padding:23px 17px}.closure-rules{grid-template-columns:1fr}.closure-state b{width:100%;margin-left:0}}
.learning-card{font-family:var(--sans);font-size:.97rem;padding:20px 23px;border-radius:10px;border:1px solid var(--line);border-left-width:4px;background:var(--soft)}.learning-card.intuition{border-left-color:#6b8fe6;background:color-mix(in srgb,#6b8fe6 10%,var(--surface))}.learning-card.definition{border-left-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--surface))}.learning-card.pitfall{border-left-color:#db755f;background:color-mix(in srgb,#db755f 9%,var(--surface))}.learning-card.recap{border-left-color:var(--gold);background:var(--warm)}.learning-card p:first-of-type,.example p:first-of-type{margin-top:0}.learning-card p:last-child,.example p:last-child{margin-bottom:0}.learning-card li{margin:.35em 0}.learning-card.intuition .label{color:#617fd0}.learning-card.pitfall .label{color:#c5604d}.learning-card.recap .label{color:#8b6421}
.fca-context-lab{margin:46px -38px;padding:30px 32px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--raised),var(--surface));box-shadow:var(--shadow);font-family:var(--sans)}.fca-context-lab h2{font:700 1.7rem/1.2 var(--serif);margin:0 0 10px}.lab-purpose{color:var(--muted);line-height:1.55}.fca-grid{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(320px,1.2fr);gap:24px;margin-top:24px}.fca-table{display:grid;grid-template-columns:repeat(var(--fca-columns),1fr);align-items:center;border:1px solid var(--line);border-radius:10px;overflow:hidden}.fca-table>*{display:grid;place-items:center;min-height:46px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.fca-table .on{background:color-mix(in srgb,var(--accent) 18%,var(--surface));color:var(--accent);font-weight:900}.fca-workbench{padding:18px;border-radius:10px;background:var(--soft)}.fca-presets{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-top:12px}.fca-presets span{min-width:92px;color:var(--muted);font-size:12px}.fca-presets button{border:1px solid var(--line);background:var(--raised);color:var(--ink);padding:7px 10px;border-radius:8px;cursor:pointer}.fca-presets button.active{background:var(--accent);border-color:var(--accent);color:#062a2d}.fca-result{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:8px;margin-top:18px}.fca-result div{padding:12px;border-radius:8px;background:var(--raised);min-width:0}.fca-result small,.fca-result b{display:block}.fca-result small{color:var(--muted);margin-bottom:6px}.fca-result b{overflow-wrap:anywhere}.fca-result i{color:var(--accent);font-style:normal;font-weight:900}@media(max-width:760px){.fca-context-lab{margin:38px -14px;padding:23px 17px}.fca-grid{grid-template-columns:1fr}.fca-result{grid-template-columns:1fr}.fca-result i{transform:rotate(90deg);text-align:center}}
.selectable,.selectable *{user-select:text}.table-scroll{max-width:100%;overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:10px}.table-scroll table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:.94rem;background:var(--raised)}.table-scroll th,.table-scroll td{padding:10px 14px;text-align:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line);white-space:nowrap}.table-scroll th{background:var(--soft);font-weight:800}.table-scroll th:first-child,.table-scroll td:first-child{text-align:left}.table-scroll tr:last-child td{border-bottom:0}.table-scroll th:last-child,.table-scroll td:last-child{border-right:0}
.bilingual-inline{display:inline}.bilingual-inline>.primary{display:inline}.bilingual-block,.bilingual-block>.primary{display:block}.bilingual-block>.translate{display:block;margin:7px 0 0}.bilingual.show-translation>.translation{display:block}.bilingual>.translate{margin-left:9px}.source-item{margin:14px 0}.source-item>a{display:inline-block;margin-bottom:5px}.lab-description{color:var(--muted);line-height:1.55}
.reading-width{display:flex;padding:3px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}.reading-width button,.notes-toggle{border:0;background:transparent;color:var(--muted);padding:5px 8px;border-radius:6px;cursor:pointer;font-size:12px}.reading-width button.active,.notes-toggle.active{background:var(--soft);color:var(--accent)}.shell.width-compact article{max-width:720px}.shell.width-standard article{max-width:850px}.shell.width-wide article{max-width:1100px}.shell.notes-hidden{grid-template-columns:250px minmax(550px,1fr) 0}.shell.notes-hidden .notes{display:none}.shell.nav-hidden.notes-hidden{grid-template-columns:0 minmax(550px,1fr) 0}@media(max-width:1180px){.notes-toggle{display:none}.shell.notes-hidden,.shell.nav-hidden.notes-hidden{grid-template-columns:225px 1fr}.shell.nav-hidden.notes-hidden{grid-template-columns:0 1fr}}@media(max-width:760px){.reading-width{display:none}}
.variance-lab{margin:46px -38px;padding:30px 32px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--raised),var(--surface));box-shadow:var(--shadow);font-family:var(--sans)}.variance-lab h2{font:700 1.7rem/1.2 var(--serif);margin:0 0 10px}.variance-controls{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:24px 0}.variance-controls label{display:block;font-size:14px;font-weight:700}.variance-controls b{float:right;color:var(--accent)}.variance-controls input{display:block;width:100%;margin-top:12px;accent-color:var(--accent)}.variance-result{padding:18px;border-radius:12px;background:var(--soft)}.variance-rows{font-weight:800;margin-bottom:16px}.variance-bars{display:grid;gap:12px}.variance-bars>div{display:grid;grid-template-columns:125px minmax(80px,1fr) 68px;gap:12px;align-items:center;font-size:13px}.variance-bars i{display:block;height:22px;border-radius:6px;background:var(--accent);transition:width .2s}.variance-bars>div:nth-child(2) i{background:var(--gold)}.variance-bars b{text-align:right;font-variant-numeric:tabular-nums}.variance-explain{font-size:14px;margin:17px 0 0;color:var(--muted)}@media(max-width:760px){.variance-lab{margin:38px -14px;padding:23px 17px}.variance-controls{grid-template-columns:1fr}.variance-bars>div{grid-template-columns:95px minmax(60px,1fr) 55px;gap:8px;font-size:11px}}