: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;overflow:hidden}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;overflow:hidden}body.hide-left #left{visibility:hidden;margin-left:-300px}body.hide-right #right{visibility:hidden;margin-right:-340px}body.ready aside{transition:margin .25s,transform .25s,visibility .25s}.panel-head{z-index:2;border-bottom:1px solid var(--line);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:#f1f3f5;justify-content:space-between;align-items:center;padding:6px 8px 6px 12px;font-size:11px;font-weight:600;display:flex;position:sticky;top:0}.panel-head button{text-transform:none;letter-spacing:0;color:var(--ink);font-weight:400}.edge-tab{z-index:5;writing-mode:vertical-rl;background:var(--panel);padding:10px 5px;font-weight:600;position:absolute;top:50%;box-shadow:0 1px 6px #0000001f}.edge-tab.left{border-left:0;border-radius:0 6px 6px 0;left:0;transform:translate(calc(-100% - 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