nav{grid-template-columns:repeat(2,minmax(0,1fr))}.plan-toolbar-top{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:8px}.plan-toolbar-top span{font-size:13px;color:var(--muted)}button{font:inherit;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--ink);touch-action:manipulation;cursor:pointer}button:disabled{opacity:.45;cursor:default}button[aria-pressed=true],#mode-toggle.active{background:var(--ink);color:var(--paper)}.plan-tools{border:1px solid var(--line);padding:8px 10px;border-radius:8px;margin-bottom:10px;background:var(--paper)}.tool-row{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-bottom:6px}.tool-row [role=group]{display:flex;gap:5px}#zoom-value{width:52px;text-align:center;font-size:13px;font-variant-numeric:tabular-nums}#gesture-help{font-size:12px;margin:5px 0 0}.plan-stage{position:relative;width:100%;height:min(66vh,760px);min-height:340px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}#plan-empty{height:100%;min-height:340px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px}#plan-svg{display:block;width:100%;height:100%;touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab}#plan-svg.drawing{cursor:crosshair}#plan-svg text{user-select:none;-webkit-user-select:none;pointer-events:none}dialog{width:min(90vw,430px);padding:20px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#0005}dialog label{display:block;margin-bottom:9px}dialog input{width:100%;font:16px/1.6 inherit;padding:9px;border:1px solid #acb7aa;border-radius:5px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}@media(max-width:600px){.tab{font-size:12px}.plan-stage{height:62vh;min-height:300px}.tool-row{gap:5px}button{font-size:13px;padding:7px 10px}}@media print{.plan-toolbar-top,.plan-tools,dialog,.note{display:none!important}.plan-stage{height:230mm;max-height:none;break-inside:avoid}}