:root{--paper:#ece7de;--surface:#fbf9f4;--canvas:#fff;--ink:#2b2620;--ink-soft:#857b6c;--line:#dcd5c8;--accent:#3555c8;--accent-soft:#e7ebfa;--thread:#c8442e;--radius:8px;--ui:"Avenir Next", "Avenir", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{height:100%;margin:0}body{font:13px/1.45 var(--ui);color:var(--ink);background:var(--paper);overflow:hidden}#app{flex-direction:column;height:100vh;display:flex}.banner{color:#5a4420;text-align:center;background:#fff4e0;border-bottom:1px solid #ecd9b2;padding:4px 12px;font-size:12px}.banner a{color:var(--accent);font-weight:600}#toolbar{background:var(--surface);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:8px 12px;padding:6px 12px;display:flex}#toolbar .break{flex-basis:100%;height:0}#toolbar .grp:last-child{border-right:none}.brand{-webkit-user-select:none;user-select:none;align-items:baseline;gap:6px;padding-right:4px;display:flex}.brand svg{width:17px;height:17px;stroke:var(--thread);fill:none;stroke-width:1.5px;align-self:center}.brand b{letter-spacing:.01em;font-size:16px;font-weight:600}.brand span{color:var(--ink-soft);letter-spacing:.14em;text-transform:uppercase;font-size:11px}.grp{border-right:1px dashed var(--line);align-items:center;gap:5px;padding:0 12px 0 0;display:flex}.grp.right{border-right:none;margin-left:auto;padding-right:0}button{font:inherit;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);cursor:pointer;white-space:nowrap;padding:5px 10px;font-weight:500}button:hover{background:#f1ede3;border-color:#c9c1af}button:active{background:#e9e4d6}button:disabled{opacity:.45;cursor:default}button:disabled:hover{background:var(--surface);border-color:var(--line)}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:1px}button.icon{padding:5px 9px;font-size:14px;line-height:1}button.icon svg{stroke:currentColor;fill:none;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:14px;height:14px;display:block}button.primary{background:var(--accent);color:#fff;border-color:var(--accent);outline-offset:-3.5px;outline:1px dashed #ffffff80}button.primary:hover{background:#2c48ad}.seg{gap:0}.seg button{border-radius:0;margin-left:-1px}.seg button:first-child{border-radius:var(--radius) 0 0 var(--radius);margin-left:0}.seg button:last-child{border-radius:0 var(--radius) var(--radius) 0}.seg button.active{background:var(--accent);border-color:var(--accent);color:#fff;outline-offset:-3.5px;outline:1px dashed #ffffff8c;position:relative}select,input[type=number],input[type=text],input:not([type]){font:inherit;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:6px;padding:4px 7px}#fileName{width:120px}#zoomLabel{text-align:center;min-width:48px;font-family:var(--mono);color:var(--ink-soft);font-size:12px}#main{--split:50%;flex:1;min-height:0;display:flex}.pane{background:var(--canvas);min-width:0;position:relative;overflow:hidden}#view2d{flex:0 0 var(--split)}#view3d{background:#f4f1ea;flex:1}#view3d canvas{display:block;width:100%!important;height:100%!important}.canvas2d{cursor:crosshair;touch-action:none;display:block;position:absolute;inset:0}.splitter{cursor:col-resize;background:var(--paper);border-left:1px solid var(--line);border-right:1px solid var(--line);flex:0 0 6px}.splitter:hover{background:var(--accent-soft)}#main[data-layout="2d"] #view3d,#main[data-layout="2d"] .splitter{display:none}#main[data-layout="2d"] #view2d{flex:1}#main[data-layout="3d"] #view2d,#main[data-layout="3d"] .splitter{display:none}#panel{background:var(--surface);border-left:1px solid var(--line);width:300px;padding:4px 14px 14px;overflow-y:auto}#panel section{border-bottom:1px dashed var(--line);padding:12px 0}#panel section:last-child{border-bottom:none}#panel h3{text-transform:uppercase;letter-spacing:.12em;color:var(--ink-soft);margin:0 0 8px;font-size:11px;font-weight:600}.hint{color:#5d5546;margin:0;font-size:12.5px}.hint.small{color:var(--ink-soft);margin-top:8px;font-size:12px}.muted{color:var(--ink-soft)}.info{font-family:var(--mono);color:#4c463c;white-space:pre-wrap;background:#f4f0e7;border:1px solid #e7e1d3;border-radius:6px;max-height:200px;margin:8px 0 2px;padding:8px 9px;font-size:11.5px;overflow:auto}.roadmap{color:#5d5546;margin:0;padding-left:18px;font-size:12px}.roadmap li{margin:3px 0}.roadmap li.done{color:var(--ink-soft);text-decoration:line-through}.keys{color:var(--ink-soft);grid-template-columns:1fr 1fr;gap:4px 10px;font-size:11.5px;display:grid}.keys b{color:var(--ink);font-family:var(--mono);border:1px solid var(--line);background:#f1ecdf;border-radius:4px;margin-right:2px;padding:0 4px;font-size:10.5px;font-weight:600}.hidden{display:none!important}#status{background:var(--surface);border-top:1px solid var(--line);font-family:var(--mono);color:#4c463c;align-items:center;gap:18px;padding:4px 12px;font-size:11.5px;display:flex}#status .right{font-family:var(--ui);margin-left:auto}.toast{z-index:60;background:var(--ink);color:#fdfbf6;outline-offset:-4px;border-radius:10px;outline:1px dashed #ffffff59;max-width:min(560px,86vw);padding:10px 16px;font-size:13px;position:fixed;top:54px;left:50%;transform:translate(-50%);box-shadow:0 6px 22px #2b262059}@media (max-width:1100px){.brand span{display:none}#panel{width:250px}}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.tools{gap:2px}.tools .tool{background:0 0;border-color:#0000;align-items:center;gap:6px;padding:5px 9px;display:flex}.tools .tool svg{stroke:currentColor;fill:none;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:15px;height:15px}.tools .tool:hover{border-color:var(--line);background:#f1ede3}.tools .tool.active{background:var(--accent);border-color:var(--accent);color:#fff;outline-offset:-3.5px;outline:1px dashed #ffffff8c}button.danger{color:var(--thread);border-color:#e0b9ae}button.danger:hover{background:#f9ece8}button.wide{width:100%;margin-top:8px;padding:7px 10px}input[type=number]{width:68px;font-family:var(--mono);font-size:12px}.snaps{gap:4px}.chip{cursor:pointer;position:relative}.chip input{opacity:0;pointer-events:none;position:absolute}.chip span{border:1px solid var(--line);color:var(--ink-soft);background:0 0;border-radius:99px;padding:3.5px 9px;font-size:12px;line-height:1.3;transition:background .12s,color .12s;display:inline-block}.chip:hover span{color:var(--ink);border-color:#c9c1af}.chip input:checked+span{background:var(--accent-soft);color:#24398c;border-color:#b9c4ec;font-weight:500}.chip input:focus-visible+span{outline:2px solid var(--accent);outline-offset:1px}.swatchrow{align-items:center;gap:5px;display:flex}.swatch{background:var(--c);cursor:pointer;border:1px solid #0003;border-radius:50%;flex:none;width:18px;height:18px;padding:0}.swatch:hover{background:var(--c);transform:scale(1.12)}.swatch.active{box-shadow:0 0 0 2px var(--surface), 0 0 0 3.5px var(--ink)}input[type=color].pick{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:6px;flex:none;width:22px;height:20px;padding:0}input[type=color].pick::-webkit-color-swatch-wrapper{padding:2px}input[type=color].pick::-webkit-color-swatch{border:none;border-radius:4px}#panel .row .swatchrow{flex:1}#panel .row .swatchrow .swatch,#panel .row .swatchrow .pick{flex:none}#panel .row .swatchrow .pick{width:26px}#panel .row{align-items:center;gap:7px;margin:5px 0;display:flex}#panel .row input:not([type=checkbox]):not([type=color]),#panel .row select{flex:1;min-width:0}#panel .row input[type=number]{flex:0 0 74px}#panel .row.col{display:block}#panel .row.col textarea{resize:vertical;width:100%;min-height:46px;font:inherit;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:6px;margin-top:4px;padding:5px 7px;display:block}#panel .wide-range{width:100%;accent-color:var(--accent);margin:2px 0 6px}.sub{color:#5d5546;margin-top:8px;font-weight:600}.btns{flex-wrap:wrap;gap:5px;margin-top:10px;display:flex}.btns button{padding:4px 8px;font-size:12px}.typed{color:var(--accent);font-weight:600}.text-editor{z-index:5;border:1px dashed var(--accent);color:var(--ink);resize:none;white-space:pre;background:#ffffffe0;border-radius:4px;margin:0;padding:2px 3px;position:absolute;overflow:hidden;box-shadow:0 2px 10px #2b262026}.text-editor:focus{outline:none}.modal{z-index:70;background:#2b262073;justify-content:center;align-items:flex-start;padding:12vh 16px 0;display:flex;position:fixed;inset:0}.modal-card{background:var(--surface);border:1px solid var(--line);outline:1px dashed var(--line);outline-offset:-6px;border-radius:12px;width:min(600px,92vw);padding:18px 20px;box-shadow:0 14px 44px #2b262066}.modal-card h3{color:var(--ink);margin:0 0 6px;font-size:14px;font-weight:600}.modal .row{align-items:center;gap:7px;margin:7px 0;font-size:13px;display:flex}.modal .row input[type=number]{width:74px}.modal .row input[type=radio]{flex:none;align-self:flex-start;margin:2px 0 0}.modal .row span{flex:1}.share-row{gap:6px;margin:12px 0 8px;display:flex}.share-row input{min-width:0;font-family:var(--mono);color:#4c463c;background:#f4f0e7;border-color:#e7e1d3;flex:1;padding:7px 9px;font-size:11.5px}.right-btns{justify-content:flex-end;margin-top:12px}@media (max-width:1500px){.tools .tool span{display:none}}.modal-card.wide{width:min(960px,96vw)}#nestCanvas{border:1px solid var(--line);background:#fff;border-radius:6px;width:100%;height:auto;margin-top:8px}.fablist{flex-wrap:wrap;gap:5px;margin:6px 0;display:flex}.fablist .fab{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:99px;align-items:center;gap:6px;padding:3px 8px 3px 4px;font-size:12px;display:flex}.fablist .fab i{border:1px solid #0003;border-radius:50%;width:16px;height:16px;display:inline-block}.fablist .fab.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}#panel .row select+button{flex:none;padding:3px 8px}.tape-label{background:var(--thread);color:#fff;font:600 12px var(--mono);pointer-events:none;z-index:4;white-space:nowrap;border-radius:6px;padding:2px 7px;position:absolute;transform:translate(-50%,-140%)}.seg3d button.active{background:var(--accent);border-color:var(--accent);color:#fff}.measures{grid-template-columns:1fr 1fr;gap:3px 8px;margin:6px 0;display:grid}.measures label{color:#5d5546;justify-content:space-between;align-items:center;gap:6px;font-size:11.5px;display:flex}.measures input{flex:0 0 58px;width:58px;padding:2px 5px}#panel .row input[type=range]{accent-color:var(--accent);flex:1}