:root{--bg:#f6f5f2;--panel:#fff;--ink:#1d232a;--muted:#66717d;--line:#dcdfe3;--accent:#0a6cff;--err:#d23a2f;--warn:#c98200;--info:#3d6f9e;color:var(--ink);font:13px/1.4 -apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;margin:0}body{flex-direction:column;display:flex}#toolbar{background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:6px;padding:6px 10px;display:flex}#toolbar .title{margin-right:10px;font-weight:600}#toolbar .sep{background:var(--line);width:1px;height:22px;margin:0 4px}button,select,input,textarea{font:inherit;color:inherit}button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:6px;padding:4px 9px}button:hover{border-color:#b8bec6}button.on{background:var(--accent);color:#fff;border-color:var(--accent)}button.small{padding:1px 6px;font-size:12px}button.danger{color:var(--err)}button.generated{color:#1f7a3a;font-variant-numeric:tabular-nums;background:#f1faf3;border-color:#bfe0c8;min-width:170px}button.generated.old{color:var(--muted);border-color:var(--line);background:#fff}.fit{border-radius:6px;margin:2px 0 8px;padding:6px 8px;font-size:12px}.fit.ok{color:#1f5a30;background:#f1faf3;border:1px solid #bfe0c8}.fit.warn{color:#6b4b00;background:#fff8e6;border:1px solid #f0d58a}.fit .row{margin-top:6px}main{flex:1;min-height:0;display:flex}aside{background:var(--panel);border-color:var(--line);border-style:solid;border-width:0;width:300px;overflow-y:auto}#left{border-right-width:1px}#right{border-left-width:1px;width:340px}#stage{flex:1;min-width:0;position:relative}#canvas{touch-action:none;-webkit-user-select:none;user-select:none;background:#fbfbfa;width:100%;height:100%;display:block}#hint{border:1px solid var(--line);color:var(--muted);pointer-events:none;background:#ffffffeb;border-radius:6px;padding:4px 8px;position:absolute;bottom:10px;left:10px}details{border-bottom:1px solid var(--line)}details>summary{cursor:pointer;padding:8px 12px;font-weight:600;list-style:none}details>summary:before{content:"▸ ";color:var(--muted)}details[open]>summary:before{content:"▾ "}.sec{padding:0 12px 10px}.row{align-items:center;gap:6px;margin:4px 0;display:flex}.row>label{color:var(--muted);flex:1}.row input[type=number],.row input[type=text],.row select{border:1px solid var(--line);border-radius:4px;width:110px;padding:2px 5px}.row input.wide{width:170px}textarea{border:1px solid var(--line);border-radius:4px;width:100%;min-height:90px;padding:4px;font:12px ui-monospace,Menlo,monospace}.note{color:var(--muted);margin:4px 0;font-size:12px}.stat{justify-content:space-between;padding:2px 0;display:flex}.stat b{font-variant-numeric:tabular-nums}table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:12px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid #eef0f2;padding:3px 4px}th{color:var(--muted);font-weight:500}.swatch{vertical-align:middle;border-radius:2px;width:10px;height:10px;margin-right:4px;display:inline-block}.viol{cursor:pointer;border-radius:4px;margin:2px 0;padding:4px 6px}.viol:hover{background:#f1f3f5}.viol.error{border-left:3px solid var(--err)}.viol.warn{border-left:3px solid var(--warn)}.viol.info{border-left:3px solid var(--info)}.ok{color:#2a8a3e}.bad{color:var(--err);font-weight:600}.sleeper-row{grid-template-columns:1fr 1fr 1fr auto;gap:4px;margin:3px 0;display:grid}.sleeper-row input{border:1px solid var(--line);border-radius:4px;width:100%;padding:2px 4px}.layers label{color:var(--ink);gap:4px;margin:2px 10px 2px 0;display:inline-flex}#tip{z-index:50;color:#f4f6f8;pointer-events:none;opacity:0;background:#1d232a;border-radius:6px;max-width:320px;padding:7px 10px;font-size:12px;line-height:1.45;transition:opacity .12s;position:fixed;box-shadow:0 4px 14px #0000002e}#tip.show{opacity:1}[data-tip]>label,th[data-tip],.stat[data-tip] span{cursor:help}