:root { --ink: #1a1714; --paper: #f5f1e8; --paper-2: #efe9dc; --rule: #d6cdb8; --muted: #756d5e; --sienna: #c14d2a; }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body { font-family: 'Inter', sans-serif; background: var(--paper); min-height: 100vh; color: var(--ink); }
  .container { display: flex; min-height: 100vh; padding: 24px; gap: 24px; }
  .sidebar { width: 360px; flex-shrink: 0; background: var(--paper-2); padding: 28px; border-radius: 4px; border: 0.5px solid var(--rule); overflow-y: auto; max-height: calc(100vh - 48px); }
  .masthead { border-bottom: 1px solid var(--ink); padding-bottom: 16px; margin-bottom: 24px; }
  .masthead .imprint { font-size: 11px; letter-spacing: 2px; color: var(--muted); text-transform: uppercase; margin-bottom: 12px; }
  .masthead h1 { font-family: 'Crimson Pro', serif; font-size: 28px; font-weight: 500; line-height: 1.05; color: var(--ink); margin-bottom: 8px; }
  .masthead .deck { font-family: 'Crimson Pro', serif; font-style: italic; font-size: 14px; color: var(--muted); line-height: 1.4; }
  .legend-note { font-size: 12px; color: var(--muted); line-height: 1.55; padding: 12px 0; border-top: 0.5px solid var(--rule); border-bottom: 0.5px solid var(--rule); margin-bottom: 24px; }
  .legend-note strong { color: var(--ink); font-weight: 500; }
  .legend-note em { font-style: italic; color: var(--ink); }
  .control-section { margin-bottom: 24px; }
  .control-section h3 { font-size: 11px; font-weight: 500; color: var(--muted); margin-bottom: 12px; letter-spacing: 1.5px; text-transform: uppercase; }
  .seed-input { width: 100%; background: var(--paper); padding: 10px 12px; border-radius: 2px; font-family: 'JetBrains Mono', monospace; font-size: 14px; margin-bottom: 8px; border: 0.5px solid var(--rule); text-align: center; color: var(--ink); }
  .seed-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 6px; }
  .theory-toggle { display: grid; grid-template-columns: 14px 1fr 36px; gap: 9px; align-items: center; margin-bottom: 7px; cursor: pointer; }
  .theory-toggle.dim { opacity: 0.32; }
  .theory-toggle .sw { width: 13px; height: 13px; border-radius: 2px; }
  .theory-toggle .name { font-size: 11.5px; color: var(--ink); line-height: 1.2; }
  .theory-toggle .pct { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); text-align: right; }
  .slider-row { margin-bottom: 8px; }
  .slider-row label { display: flex; justify-content: space-between; font-size: 11.5px; color: var(--ink); margin-bottom: 6px; }
  .slider-row label .v { font-family: 'JetBrains Mono', monospace; color: var(--muted); }
  input[type=range] { width: 100%; accent-color: var(--sienna); }
  .button { background: var(--ink); color: var(--paper); border: none; padding: 8px 12px; border-radius: 2px; font-family: 'Inter', sans-serif; font-size: 12px; font-weight: 500; cursor: pointer; transition: opacity 0.15s ease; width: 100%; }
  .button:hover { opacity: 0.85; }
  .button.outline { background: transparent; color: var(--ink); border: 0.5px solid var(--ink); }
  .detail-panel { background: var(--paper); padding: 14px 16px; border-radius: 2px; border: 0.5px solid var(--rule); min-height: 88px; }
  .detail-panel .empty { font-family: 'Crimson Pro', serif; font-style: italic; font-size: 12.5px; color: var(--muted); line-height: 1.5; }
  .detail-panel .dp-pair { font-family: 'Crimson Pro', serif; font-size: 15px; color: var(--ink); font-weight: 500; line-height: 1.3; margin-bottom: 8px; }
  .detail-panel .dp-pair em { font-style: italic; color: var(--muted); font-weight: 400; }
  .detail-panel .dp-row { display: flex; justify-content: space-between; font-size: 11.5px; color: var(--muted); padding: 3px 0; border-bottom: 0.5px solid var(--rule); }
  .detail-panel .dp-row:last-child { border-bottom: none; }
  .detail-panel .dp-row .v { font-family: 'JetBrains Mono', monospace; color: var(--ink); }
  .canvas-area { flex: 1; display: flex; align-items: flex-start; justify-content: center; min-width: 0; }
  #canvas-container { width: 100%; max-width: 1100px; border: 0.5px solid var(--rule); background: var(--paper); position: relative; }
  #canvas-container canvas { display: block; width: 100% !important; height: auto !important; cursor: crosshair; }
  .canvas-footer { border-top: 0.5px solid var(--rule); padding: 14px 22px; display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 14px; font-size: 11px; color: var(--muted); }
  .canvas-footer .pool .label { font-family: 'JetBrains Mono', monospace; font-size: 9.5px; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; }
  .canvas-footer .pool .val { font-family: 'Crimson Pro', serif; font-size: 16px; color: var(--ink); line-height: 1; font-weight: 500; }
  .canvas-footer .pool .val em { font-style: italic; font-size: 11px; color: var(--muted); font-weight: 400; }
  .canvas-footer .sig-row { grid-column: 1 / -1; margin-top: 6px; padding-top: 8px; border-top: 0.5px solid var(--rule); display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--muted); letter-spacing: 0.05em; }
  .canvas-footer .sig { font-family: 'Crimson Pro', serif; font-style: italic; }
  .loading { display: flex; align-items: center; justify-content: center; min-height: 600px; font-family: 'Crimson Pro', serif; font-style: italic; font-size: 16px; color: var(--muted); }
  @media (max-width: 900px) { .container { flex-direction: column; } .sidebar { width: 100%; max-height: none; } }

/* Functional integration: inherit the original's type, palette and controls. */
a { color: inherit; text-underline-offset: 3px; }
button, select, input { font: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid var(--sienna); outline-offset: 3px; }
button:disabled { opacity: .45; cursor: default; }
.theory-toggle { border: 0; background: transparent; width: 100%; padding: 0; text-align: left; font: inherit; }
.theory-toggle.dim { opacity: .6; }
.theory-toggle[aria-pressed="false"] .sw { background: transparent !important; border: 1px solid var(--muted); }
.seed-input { text-align: left; font-size: 12px; min-height: 38px; }
.control-note, .source-note { font-size: 11px; line-height: 1.55; color: var(--muted); }
.control-note { margin: 6px 0 12px; }
.source-note { margin-top: 12px; }
.source-note a { white-space: nowrap; }
.legend-note { margin-bottom: 20px; }
.dp-source { font-size: 11px; line-height: 1.55; margin-top: 10px; }
.dp-source a { display: inline-block; margin-right: 10px; }
.detail-panel .dp-row { gap: 10px; align-items: baseline; }
.detail-panel .dp-row .v { text-align: right; }
.detail-clear { background: none; border: 0; color: var(--muted); text-decoration: underline; font-size: 10px; margin-top: 8px; cursor: pointer; }
#canvas-container { overflow: hidden; }
.canvas-scroll { overflow-x: auto; overscroll-behavior-x: contain; max-width: 100%; }
.canvas-drawing { position: relative; }
.canvas-hint { display: none; }
.canvas-footer .sig-row { gap: 12px; line-height: 1.5; }
.canvas-footer .sig { flex-shrink: 0; }
.pair-access { padding: 13px 22px; border-top: .5px solid var(--rule); font-size: 11px; color: var(--muted); }
.pair-access summary { cursor: pointer; width: fit-content; }
.pair-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; margin-top: 14px; }
.pair-button { display: flex; justify-content: space-between; gap: 12px; width: 100%; padding: 8px 0; border: 0; border-bottom: .5px solid var(--rule); background: transparent; color: var(--ink); text-align: left; cursor: pointer; font-size: 11px; line-height: 1.4; }
.pair-button .v { font-family: 'JetBrains Mono', monospace; color: var(--muted); }
.pair-button[aria-pressed="true"] { color: var(--sienna); }
.pair-access .control-note { margin-bottom: 0; }
.loading { flex-direction: column; gap: 16px; padding: 30px; text-align: center; }
.loading .button { width: auto; }
.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 (prefers-reduced-motion: reduce) { .button { transition: none; } }
@media (max-width: 900px) { .sidebar { overflow: visible; } .canvas-area { width: 100%; } .canvas-scroll.enlarged .canvas-drawing { min-width: 1100px; } .canvas-hint { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 14px; padding: 10px 16px; font-size: 11px; color: var(--muted); border-top: .5px solid var(--rule); line-height: 1.5; } .drawing-size { width: auto; padding: 6px 10px; font-size: 11px; flex-shrink: 0; } .canvas-footer { grid-template-columns: 1fr 1fr; } .canvas-footer .sig-row { flex-direction: column; gap: 4px; } }
@media (max-width: 480px) { .container { padding: 12px; gap: 12px; } .sidebar { padding: 24px; } .canvas-footer, .pair-access { padding: 14px 16px; } .canvas-footer { column-gap: 12px; row-gap: 18px; } .pair-list { grid-template-columns: 1fr; } .canvas-footer .sig { flex-shrink: 1; } .canvas-footer .sig-row { overflow-wrap: anywhere; } }