:root{--paper: #f1ece1;--panel: #fbf9f3;--ink: #16140f;--ink-soft: #4a4538;--muted: #8c8474;--line: rgba(22, 20, 15, .12);--line-strong: rgba(22, 20, 15, .28);--red: #c2362f;--green: #2f7d52;--display: "Fraunces", Georgia, "Times New Roman", serif;--mono: "DM Mono", ui-monospace, "SF Mono", monospace;--radius: 4px}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--paper);color:var(--ink);font-family:var(--mono);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.app{display:grid;grid-template-columns:410px 1fr;grid-template-rows:minmax(0,1fr);height:100vh;overflow:hidden}.panel{background:var(--panel);border-right:1px solid var(--line-strong);padding:30px 30px 24px;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:26px}.controls{display:flex;flex-direction:column;gap:20px}.field{display:flex;flex-direction:column;gap:7px}.field-label{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);display:flex;justify-content:space-between;align-items:baseline;gap:8px}.field-label em{font-style:normal;text-transform:none;letter-spacing:.02em;color:var(--muted);font-size:10px}textarea,input[type=text],select{font-family:var(--mono);font-size:13px;color:var(--ink);background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius);padding:10px 11px;width:100%;transition:border-color .15s,box-shadow .15s}textarea{resize:vertical;line-height:1.5}textarea:focus,input:focus,select:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px #16140f14}select{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,var(--ink-soft) 50%),linear-gradient(135deg,var(--ink-soft) 50%,transparent 50%);background-position:calc(100% - 16px) 52%,calc(100% - 11px) 52%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:2px;background:var(--line-strong);cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--ink);border:3px solid var(--panel);box-shadow:0 0 0 1px var(--ink)}.toggles{display:flex;flex-direction:column;gap:11px;padding:4px 0}.toggle{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft);cursor:pointer}.toggle input{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:34px;height:18px;border-radius:10px;background:var(--line-strong);position:relative;cursor:pointer;transition:background .18s;flex-shrink:0}.toggle input:after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:transform .18s}.toggle input:checked{background:var(--ink)}.toggle input:checked:after{transform:translate(16px)}.readout{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:14px 15px}.readout-status{font-size:11px;margin-bottom:12px}.readout-status .ok{color:var(--green)}.readout-status .warn{color:var(--red)}.readout-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.readout-grid dt{font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:3px}.readout-grid dd{margin:0;font-family:var(--display);font-weight:600;font-size:17px}.actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:2px}.btn{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;padding:13px 14px;border-radius:var(--radius);border:1px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:background .15s,color .15s,transform .05s}.btn:hover{background:#16140f0f}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--ink);color:var(--paper)}.btn-primary:hover{background:#000}.btn:disabled{opacity:.5;cursor:progress}.stage{display:flex;flex-direction:column;min-width:0;min-height:0}.stage-canvas{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:24px;background-color:#ddd6c7;background-image:linear-gradient(rgba(22,20,15,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(22,20,15,.04) 1px,transparent 1px);background-size:24px 24px;box-shadow:inset 0 0 120px #16140f24}.sheet-scale{transform-origin:center center;flex-shrink:0}.sheet{position:relative;background:#fff;color:#0d0b09;box-shadow:0 18px 50px #00000047;overflow:hidden}.sheet-header{text-align:center;font-family:var(--display);font-weight:600;font-size:6mm;letter-spacing:.04em;line-height:1;height:14mm;display:flex;align-items:center;justify-content:center}.sheet-chart{position:absolute;display:flex;align-items:center;justify-content:center}.sheet-chart-inner{transform-origin:center center;display:flex;flex-direction:column;align-items:center;justify-content:center}.sheet-row{position:relative;width:100%;display:flex;align-items:center;justify-content:center}.sheet-optotype{line-height:1;white-space:nowrap;text-align:center}.sheet-label{position:absolute;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:3mm;letter-spacing:.02em;color:#a39a86}.sheet-footer{position:absolute;display:flex;flex-direction:column;align-items:center;gap:2.5mm}.sheet-duochrome{display:flex;width:46mm;height:6mm}.sheet-duochrome span{flex:1}.du-red{background:var(--red)}.du-green{background:var(--green)}.sheet-footnote{font-family:var(--mono);font-size:3mm;color:#8a8475;text-align:center}@media print{.app{display:block;height:auto;overflow:visible}.panel{display:none!important}.stage,.stage-canvas{display:block;padding:0;margin:0;overflow:visible;background:none;box-shadow:none;height:auto}.sheet-scale{transform:none!important;width:auto!important;height:auto!important}.sheet{box-shadow:none}}