:root{--bg:#0d0f12;--bg-panel:#14171c;--bg-elev:#1a1e25;--fg:#f0f3f8;--fg-dim:#c1c8d4;--fg-muted:#8a93a3;--accent:#5cc8ff;--accent-2:#ffb86c;--accent-3:#ff79c6;--good:#50fa7b;--warn:#ffb86c;--bad:#f55;--border:#2a2f38;--grid:#1f242c;--matrix-index-font-size:13px;--matrix-input-font-size:11px;--chamber-a:#5cc8ff0f;--chamber-b:#ffb86c0d;--font-ui:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:"JetBrains Mono", "SF Mono", Menlo, monospace}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--fg);font-family:var(--font-ui);margin:0;padding:0;font-size:13px;overflow:hidden}:root{--left-w:380px;--right-w:420px;--handle-w:6px}#app{grid-template-columns:var(--left-w) var(--handle-w) 1fr var(--handle-w) var(--right-w);background:var(--border);height:100vh;display:grid}#left-panel,#right-panel{background:var(--bg-panel);min-width:0;padding:16px 14px;overflow:hidden 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3}.puncture{fill:var(--accent);stroke:#fff;stroke-width:1.5px;cursor:grab}.puncture:hover{fill:var(--accent-2)}.puncture.dragging{cursor:grabbing}.puncture-label{fill:var(--fg);font-family:var(--font-mono);pointer-events:none;font-size:11px}.path-line{fill:none;stroke:var(--accent-3);stroke-width:2px;stroke-linejoin:round}.path-arrow{fill:var(--accent-3);stroke:none}.path-start-dot{fill:var(--accent-3);stroke:var(--bg);stroke-width:1.5px}.path-vertex{fill:var(--accent-3);stroke:var(--bg);stroke-width:1.5px;cursor:grab}.path-vertex.dragging{cursor:grabbing}.intersection-dot{fill:var(--good);stroke:var(--bg);stroke-width:1px}.axis{stroke:var(--grid);stroke-width:1px}.tick-label{fill:var(--fg-muted);font-family:var(--font-mono);font-size:10px}.interaction-locked .puncture,.interaction-locked .path-vertex{cursor:wait;opacity:.65;pointer-events:none}body.computing-lock input:disabled,body.computing-lock select:disabled,body.computing-lock 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