:root{--surface:#f5f7f1;--panel:#fff;--panel-strong:#f7faf8;--panel-soft:#fbfcf7;--line:#dbe1d6;--ink:#334049;--ink-strong:#11191f;--muted:#6f7b82;--accent:#2e6f6f;--focus:#2d756c;--selected:#e7f1ed;--mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace;--sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;color:var(--ink);background:var(--surface);font-family:var(--sans);letter-spacing:0;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.45}*{box-sizing:border-box}html{background:var(--surface);min-width:320px}body{min-width:320px;min-height:100svh;margin:0}#root{min-height:100svh}.app-shell{background:linear-gradient(90deg, #0e1f2a0d 1px, transparent 1px), linear-gradient(180deg, #0e1f2a0d 1px, transparent 1px), var(--surface);min-height:100svh;color:var(--ink);background-size:28px 28px}.workspace{width:min(1500px,100% - 32px);margin:0 auto;padding:24px 0}.topbar{padding:22px 0 18px}h1,h2,p{margin:0}h1{color:var(--ink-strong);letter-spacing:0;font-size:38px;line-height:1.05}h2{color:var(--ink-strong);letter-spacing:0;font-size:16px;line-height:1.2}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.tag-filter{border:1px solid var(--line);background:#ffffff94;border-radius:8px;flex-wrap:wrap;align-items:center;gap:4px;width:fit-content;max-width:100%;padding:3px;display:flex}.tag-filter button{min-height:30px;color:var(--ink);background:0 0;border:0;border-radius:5px;justify-content:center;align-items:center;padding:0 9px;font-size:13px;display:inline-flex}.tag-filter button:hover,.tag-filter button.active{color:var(--ink-strong);background:var(--panel-strong)}.controls{grid-template-columns:minmax(280px,1fr) auto;align-items:center;gap:12px;margin-bottom:8px;display:grid}.seat-legend{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 12px;font-size:13px;display:flex}.seat-legend>span:first-child{color:var(--ink);font-weight:800}.legend-item{align-items:center;gap:6px;display:inline-flex}.legend-item i{background:var(--bidder-color);border-radius:999px;width:18px;height:10px}.legend-divider{background:var(--line);width:1px;height:16px}.search-box{border:1px solid var(--line);background:var(--panel);border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:10px;min-height:42px;padding:0 12px;display:grid}.search-box svg{color:var(--muted)}.search-box input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0}.search-box input::placeholder{color:var(--muted)}.content-grid{grid-template-columns:minmax(360px,.85fr) minmax(480px,1.15fr);align-items:start;gap:12px;display:grid}.tree-panel,.detail-panel,.code-panel{border:1px solid var(--line);background:#ffffffd6;border-radius:8px;box-shadow:0 16px 50px #17212b14}.tree-panel,.code-panel{max-height:calc(100svh - 32px);position:sticky;top:16px;overflow:auto}.detail-panel{min-height:620px;padding:18px}.panel-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;min-height:48px;padding:0 14px;display:flex}.panel-heading span,.panel-heading svg{color:var(--muted);font-size:13px}.tree-heading-actions{align-items:center;gap:8px;display:inline-flex}.tree-heading-actions button{border:1px solid var(--line);background:var(--panel);width:30px;height:30px;color:var(--ink);border-radius:6px;place-items:center;padding:0;display:inline-grid}.tree-heading-actions button:hover{border-color:var(--focus);background:var(--panel-strong);color:var(--ink-strong)}.tree-list{padding:10px}.tree-node{position:relative}.tree-children{border-left:1px solid var(--line);margin-left:22px;padding-left:12px}.tree-row{border-radius:7px;grid-template-columns:28px minmax(0,1fr);align-items:stretch;margin:2px 0;display:grid}.tree-row.selected{background:var(--selected)}.toggle-button{width:28px;min-height:58px;color:var(--muted);background:0 0;border:0;place-items:center;display:grid}.toggle-button:disabled{cursor:default}.toggle-button span{width:8px;height:8px}.node-button{min-width:0;min-height:58px;color:inherit;text-align:left;background:0 0;border:0;grid-template-columns:72px minmax(0,1fr);align-items:start;gap:12px;padding:8px 10px 8px 0;display:grid}.node-button:hover .node-copy strong{color:var(--ink-strong)}.node-bid-stack{flex-direction:column;align-items:center;gap:5px;width:72px;display:inline-flex}.node-copy{min-width:0;padding:5px 0 0}.node-copy strong,.node-copy small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.node-copy strong{color:var(--ink);font-size:14px;line-height:1.25}.node-copy small{color:var(--muted);margin-top:2px;font-size:12px;line-height:1.35}.frequency-badge{color:#2f6d50;white-space:nowrap;background:#f4faf6;border:1px solid #cddbd4;border-radius:999px;align-items:center;width:fit-content;padding:4px 6px;font-size:10px;font-weight:800;line-height:1;display:inline-flex}.bid-token{border:1px solid var(--line);border-left:5px solid var(--bidder-color,var(--line));background:var(--panel);min-width:82px;height:58px;color:var(--ink-strong);font-family:var(--mono);letter-spacing:0;box-sizing:border-box;border-radius:7px;justify-content:center;align-items:center;padding:0 9px;font-size:30px;font-weight:800;display:inline-flex}.suit{font-family:"Segoe UI Symbol", "Apple Symbols", "Noto Sans Symbols", var(--sans);font-size:1.16em;font-weight:900;line-height:0}.suit-c{color:#1f7a4d}.suit-d{color:#d97812}.suit-h{color:#c92f3e}.suit-s{color:#0f5f8a}.bid-token.small{border-radius:6px;min-width:72px;height:44px;font-size:22px}.bidder-opener{--bidder-color:#105b87}.bidder-responder{--bidder-color:#3f6f4f}.bidder-intervenor{--bidder-color:#a2442c}.bidder-advancer{--bidder-color:#865a14}.sequence-bar{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px;flex-wrap:wrap;align-items:center;gap:8px;min-height:42px;padding:6px 10px;display:flex}.sequence-bar span{align-items:center;gap:8px;display:inline-flex}.sequence-bar i{color:var(--muted);font-style:normal}.sequence-bar button{border:1px solid var(--line);background:var(--panel);min-height:28px;color:var(--ink-strong);font-family:var(--mono);border-radius:6px;padding:0 9px;font-size:13px;font-weight:800}.selected-header{grid-template-columns:auto 1fr;align-items:center;gap:14px;margin:22px 0;display:grid}.selected-header p{color:var(--muted);text-transform:uppercase;font-size:13px;font-weight:700}.selected-header h2{margin-top:3px;font-size:30px;line-height:1.1}.definition-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.info-block,.alert-note,.source-card{border:1px solid var(--line);background:var(--panel-soft);border-radius:8px;padding:13px}.info-block span,.source-card p{color:var(--muted);text-transform:uppercase;margin-bottom:6px;font-size:12px;font-weight:800;display:block}.info-block p{color:var(--ink-strong);font-size:15px;line-height:1.45}.frequency-block p{font-size:24px;font-weight:800;line-height:1}.frequency-block small,.source-card small{color:var(--muted);margin-top:7px;font-size:12px;line-height:1.35;display:block}.alert-note{background:#fff8e6;border-color:#d39935;grid-template-columns:auto 1fr;gap:10px;margin-top:10px;display:grid}.alert-note strong{color:#865a14}.alert-note span{color:var(--ink-strong)}.tag-row{flex-wrap:wrap;gap:8px;margin:14px 0 18px;display:flex}.tag-row span{border:1px solid var(--line);background:var(--panel);color:var(--muted);border-radius:999px;padding:5px 9px;font-size:12px;font-weight:700}.continuations{border:1px solid var(--line);border-radius:8px;overflow:hidden}.continuation-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:12px;display:grid}.continuation-grid button{border:1px solid var(--line);background:var(--panel-soft);min-height:76px;color:inherit;text-align:left;border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:10px;padding:10px;display:grid}.continuation-grid button:hover{border-color:var(--focus);background:var(--panel)}.continuation-grid strong,.continuation-grid small{display:block}.continuation-grid strong{color:var(--ink-strong);font-size:14px;line-height:1.2}.continuation-grid small{color:var(--muted);margin-top:3px;font-size:12px;line-height:1.35}.empty-state{color:var(--muted);padding:14px;font-size:14px}.code-panel{padding-bottom:12px}.code-panel .source-card{margin:12px}.source-card strong{color:var(--ink-strong);font-family:var(--mono);font-size:13px}pre{border:1px solid var(--line);color:#d8ede8;background:#111a20;border-radius:8px;margin:12px;padding:14px;overflow:auto}code{font-family:var(--mono);white-space:pre;font-size:12px;line-height:1.55}@media (width<=1180px){.content-grid{grid-template-columns:minmax(320px,.9fr) minmax(420px,1.1fr)}}@media (width<=860px){.workspace{width:min(100% - 20px,720px);padding:12px 0}.controls{grid-template-columns:1fr;align-items:stretch;display:grid}.tag-filter{justify-content:stretch}.tag-filter button{flex:auto}.content-grid,.definition-grid,.continuation-grid{grid-template-columns:1fr}.tree-panel{max-height:460px;position:static}.detail-panel{min-height:auto}h1{font-size:32px}.selected-header h2{font-size:24px}}