:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0a1322;--bg-panel:#101c31;--bg-raised:#17284a;--bg-input:#0c1729;--line:#24365c;--line-strong:#37507f;--text:#f3f6fb;--muted:#93a4c2;--muted-2:#6b7d9e;--cyan:#3fd8f6;--cyan-ink:#062a36;--cyan-dim:#3fd8f624;--gold:#f2c76b;--violet:#b9a7ff;--danger:#ff8a8a;--danger-dim:#ff8a8a1f;--ok:#7ee8c0;--focus:#9be9fb;--font-ui:"IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:"IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;--radius:8px;--radius-sm:5px}*{box-sizing:border-box}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;margin:0;font-size:15px;line-height:1.45}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.app{flex-direction:column;min-height:100vh;display:flex}@media (width>=981px){.app{height:100vh}.workspace{min-height:0}.scene-col,.controls-col{min-height:0;overflow-y:auto}}.topbar{border-bottom:1px solid var(--line);background:linear-gradient(180deg, #0e1a2f 0%, var(--bg) 100%);flex-wrap:wrap;align-items:center;gap:18px;padding:12px 20px;display:flex}.brand{align-items:baseline;gap:10px;min-width:0;display:flex}.brand-mark{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);border:1px solid var(--cyan);border-radius:4px;padding:2px 7px;font-size:13px;font-weight:600}.brand-name{letter-spacing:-.01em;white-space:nowrap;font-size:17px;font-weight:600}.demo-label{font-family:var(--font-mono);letter-spacing:.06em;color:var(--muted);border:1px dashed 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var(--line-strong);background:var(--bg-raised);min-height:36px;color:var(--text);justify-content:center;align-items:center;gap:6px;padding:6px 14px;font-size:14px;font-weight:500;line-height:1.2;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--cyan)}.btn:disabled{opacity:.45}.btn-primary{background:var(--cyan);color:var(--cyan-ink);border-color:var(--cyan);font-weight:600}.btn-primary:hover:not(:disabled){background:#6fe3fa}.btn-ghost{background:0 0}.btn-danger-ghost{border-color:var(--line-strong);color:var(--muted);background:0 0}.btn-danger-ghost:hover:not(:disabled){color:var(--danger);border-color:var(--danger)}.btn-sm{min-height:30px;padding:3px 10px;font-size:13px}.btn.is-on{background:var(--cyan-dim);border-color:var(--cyan);color:var(--cyan)}.workspace{flex:1;grid-template-columns:minmax(0,2fr) minmax(360px,1fr);align-items:stretch;gap:0;display:grid}.scene-col{border-right:1px solid 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var(--line-strong);min-height:32px;color:var(--muted);background:0 0;border-radius:999px;align-items:center;gap:7px;padding:3px 11px;font-size:14px;font-weight:500;display:inline-flex}.chip[aria-pressed=true]{color:var(--text);background:var(--bg-raised)}.chip:disabled{opacity:.4}.chip .swatch{border-top:2px solid;width:18px;height:0}.chip .swatch.dash{border-top-style:dashed}.chip .swatch.dashdot{border-top-style:dotted;border-top-width:3px}.chip[data-layer=cargo][aria-pressed=true]{color:var(--gold);border-color:var(--gold)}.chip[data-layer=inside][aria-pressed=true]{color:var(--violet);border-color:var(--violet)}.chip[data-layer=outside][aria-pressed=true],.chip[data-layer=platform][aria-pressed=true]{color:var(--cyan);border-color:var(--cyan)}.chip.toggle[aria-pressed=true]{color:var(--cyan);border-color:var(--cyan);background:var(--cyan-dim)}.scene-wrap{background:var(--bg);flex:1;min-height:340px;position:relative}.scene-notes{flex-wrap:wrap;gap:6px;padding:8px 16px 0;display:flex}.scene-svg{touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none;width:100%;height:100%;display:block;position:absolute;inset:0}.scene-svg.is-locked{cursor:default}.scene-svg.is-dragging{cursor:grabbing}.scene-svg:focus-visible{outline-offset:-3px}.scene-svg text{font-family:var(--font-mono)}.overlay{pointer-events:none;font-size:12px;position:absolute}.overlay.tl{top:12px;left:14px}.overlay.tr{flex-direction:column;align-items:flex-end;gap:6px;display:flex;top:12px;right:14px}.overlay.br{bottom:10px;right:14px}.overlay.bl{pointer-events:auto;bottom:10px;left:14px}.legend{font-family:var(--font-mono);letter-spacing:.02em;color:var(--muted);background:#0a1322b8;border-radius:4px;gap:4px;padding:5px 8px;font-size:11.5px;display:grid}.legend-row{align-items:center;gap:8px;display:flex}.legend-row .swatch{border-top:2px solid;width:22px;height:0}.legend-row .swatch.dash{border-top-style:dashed}.legend-row 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