:root{--bg:#f5f5f7;--card:#ffffff;--ink:#1d1d1f;--ink-2:#6e6e73;--line:#e3e3e6;--line-2:#d2d2d7;--blue:#0071e3;--blue-press:#0060c0;--soft:#f5f5f7;--soft-hover:#ececee;--green:#34c759;--radius:18px;--radius-sm:11px;--shadow:0 1px 2px rgba(0,0,0,.04),0 6px 24px rgba(0,0,0,.06);--shadow-lg:0 8px 40px rgba(0,0,0,.10);--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;letter-spacing:.01em}button{font-family:inherit;cursor:pointer}.btn{border:none;border-radius:980px;padding:7px 16px;font-size:13px;font-weight:500;transition:all .18s ease;line-height:1.2}.btn-ghost{background:transparent;color:var(--ink)}.btn-ghost:hover{background:rgba(0,0,0,.05)}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-press)}.btn-primary:active{transform:scale(.98)}.btn-soft{background:var(--soft);color:var(--ink);border:1px solid var(--line)}.btn-soft:hover{background:var(--soft-hover)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn:disabled:hover{background:var(--soft)}.btn.full{width:100%;padding:11px;font-size:14px;border-radius:12px;margin-top:8px}.btn-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}.btn-row .btn{padding:10px;font-size:13px;border-radius:12px}.icon-btn{width:30px;height:30px;border:1px solid var(--line);background:#fff;border-radius:9px;color:var(--ink);font-size:15px;display:grid;place-items:center;transition:all .15s}.icon-btn:hover{background:var(--soft);border-color:var(--line-2)}.layout{max-width:1480px;margin:0 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var(--radius);overflow:hidden;cursor:grab;touch-action:none;overscroll-behavior:contain;-webkit-user-select:none;user-select:none}.canvas-wrap.grabbing{cursor:grabbing}.canvas-wrap.crosshair{cursor:crosshair}#view{position:absolute;top:0;left:0;transform-origin:0 0;image-rendering:auto;touch-action:none}.count-badge{position:absolute;top:14px;left:14px;background:rgba(29,29,31,.82);color:#fff;backdrop-filter:blur(8px);padding:7px 14px;border-radius:980px;font-size:14px;font-weight:600;box-shadow:var(--shadow)}.count-badge::before{content:"菌落 ";font-weight:400;opacity:.8}.empty-state{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;text-align:center}.empty-icon{font-size:54px;margin-bottom:6px}.empty-title{font-size:19px;font-weight:600}.empty-sub{font-size:13px;color:var(--ink-2);margin-bottom:14px}.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:16px 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20px;border-radius:980px;font-size:13.5px;font-weight:500;display:flex;align-items:center;gap:14px;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:all .3s;z-index:100}.toast.has-action{pointer-events:auto}.toast button{border:none;background:transparent;color:#8ec5ff;font:inherit;font-weight:700;padding:0;cursor:pointer;white-space:nowrap}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}@media(max-width:1080px){.layout{grid-template-columns:1fr}.panel-col{flex-direction:row;flex-wrap:wrap}.panel-card{flex:1;min-width:280px}}@media(max-width:680px){.stage-toolbar{gap:8px}.tool-group{margin-left:0}.canvas-wrap{height:380px}}.spin{animation:spin 1s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}