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rgb(0 0 0 / .1);flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden}.toolctx-select .sep{width:1px;height:24px;background:#e5e7eb;margin:0 4px;flex-shrink:0}.toolctx-select .iconbtn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;min-width:36px;padding:0;border:none;background:#fff0;border-radius:6px;cursor:pointer;transition:all .15s ease;color:#374151;touch-action:manipulation;-webkit-tap-highlight-color:#fff0;flex-shrink:0}@media (hover:none) and (pointer:coarse){.toolctx-select .iconbtn{width:44px;height:44px;min-width:44px;min-height:44px}}.toolctx-select .iconbtn:hover:not(:disabled){background:#f3f4f6;color:#1f2937}.toolctx-select .iconbtn:active:not(:disabled){background:#e5e7eb;transform:scale(.95)}.toolctx-select .iconbtn:disabled{opacity:.4;cursor:not-allowed}.toolctx-select .iconbtn.active{background:#dbeafe;color:#3b82f6}.toolctx-select .iconbtn svg{width:20px;height:20px;fill:currentColor}.stroke-width-ctrl{display:inline-flex;align-items:center;gap:8px;padding:0 8px;background:0 0;border-radius:6px;border:none;flex:1 1 240px;max-width:420px;box-sizing:border-box}.stroke-width-ctrl label{font-size:13px;font-weight:500;color:#000;white-space:nowrap}.stroke-width-ctrl input[type=range]{flex:1 1 auto;width:100%;height:4px;-webkit-appearance:none;appearance:none;background:0 0;border-radius:2px;outline:0;cursor:pointer;touch-action:manipulation;box-sizing:border-box}.stroke-width-ctrl input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:#d1d5db}.stroke-width-ctrl input[type=range]::-moz-range-track{height:4px;border-radius:2px;background:#d1d5db}.stroke-width-ctrl input[type=range]::-ms-track{height:4px;border-radius:2px;background:#d1d5db;border-color:transparent;color:transparent}.stroke-width-ctrl input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;background:#3b82f6;border-radius:50%;cursor:pointer;transition:all .15s ease;margin-top:-6px}.stroke-width-ctrl input[type=range]::-moz-range-thumb{width:16px;height:16px;background:#3b82f6;border:none;border-radius:50%;cursor:pointer;transition:all .15s ease}.stroke-width-ctrl input[type=range]::-ms-thumb{width:16px;height:16px;background:#3b82f6;border:none;border-radius:50%;cursor:pointer;transition:all .15s ease}.stroke-width-ctrl input[type=range]::-webkit-slider-thumb:hover{background:#2563eb;transform:scale(1.1)}.stroke-width-ctrl input[type=range]::-moz-range-thumb:hover{background:#2563eb;transform:scale(1.1)}@media (hover:none) and (pointer:coarse){.stroke-width-ctrl input[type=range]::-webkit-slider-thumb{width:24px;height:24px;margin-top:-10px}.stroke-width-ctrl input[type=range]::-moz-range-thumb{width:24px;height:24px}}.stroke-width-ctrl input[type=number]{width:60px;padding:4px 8px;border:1px solid #d1d5db;border-radius:4px;font-size:13px;text-align:center;outline:0;transition:border-color .15s ease;touch-action:manipulation;box-sizing:border-box}.stroke-width-ctrl input[type=number]:focus{border-color:#3b82f6;box-shadow:0 0 0 3px rgb(59 130 246 / .1)}.stroke-width-ctrl span{font-size:13px;color:#6b7280}.toolctx-select .hint{font-size:12px;color:#9ca3af;font-style:italic;margin-left:auto;white-space:nowrap;flex-shrink:0}@media (min-width:641px) and (max-width:1024px){.toolctx-select{gap:6px;padding:6px 10px}.toolctx-select .iconbtn{width:32px;height:32px;min-width:32px}.toolctx-select .iconbtn svg{width:18px;height:18px}.stroke-width-ctrl{flex:1 1 180px;max-width:360px}.stroke-width-ctrl input[type=number]{width:50px}}@media (max-width:768px){.toolctx-select .hint{display:none}}.touch-action-menu{position:fixed;bottom:80px;right:20px;display:flex;flex-direction:column;gap:12px;padding:12px;background:#fff;border-radius:12px;box-shadow:0 4px 16px rgb(0 0 0 / .15);z-index:1000;touch-action:manipulation}@media (hover:hover) and (pointer:fine){.touch-action-menu{display:none}}.touch-action-menu button{display:flex;align-items:center;justify-content:center;width:56px;height:56px;padding:0;border:none;background:#f3f4f6;border-radius:12px;cursor:pointer;transition:all .2s ease;color:#374151;touch-action:manipulation;-webkit-tap-highlight-color:#fff0}.touch-action-menu button:active{background:#e5e7eb;transform:scale(.95)}.touch-action-menu button svg{width:28px;height:28px}.uniform-scale-toggle{position:fixed;bottom:80px;left:20px;display:flex;align-items:center;justify-content:center;width:56px;height:56px;padding:0;border:2px solid #d1d5db;background:#fff;border-radius:12px;cursor:pointer;transition:all .2s ease;color:#6b7280;z-index:1000;touch-action:manipulation;-webkit-tap-highlight-color:#fff0}@media (hover:hover) and (pointer:fine){.uniform-scale-toggle{display:none}}.uniform-scale-toggle.active{background:#3b82f6;border-color:#3b82f6;color:#fff}.uniform-scale-toggle:active{transform:scale(.95)}.uniform-scale-toggle svg{width:28px;height:28px}#selectionTooltip{pointer-events:none;user-select:none;-webkit-user-select:none}#selectionTooltip rect{filter:drop-shadow(0 2px 4px rgb(0 0 0 / .2))}#selectionTooltip text{pointer-events:none}.toolctx-select .iconbtn:focus-visible{outline:2px solid #3b82f6;outline-offset:2px}.stroke-width-ctrl input:focus-visible{outline:2px solid #3b82f6;outline-offset:2px}@media (prefers-contrast:high){.sel-box{stroke-width:3}.sel-handle{stroke-width:3}.sel-rotate{stroke-width:3}}@media (prefers-reduced-motion:reduce){.sel-box,.sel-box.locked,.sel-marquee{animation:none}.toolctx-select .iconbtn,.touch-action-menu button,.uniform-scale-toggle{transition:none}}@media (prefers-color-scheme:dark){.toolctx-select{background:#1f2937;box-shadow:0 2px 8px rgb(0 0 0 / .3)}.toolctx-select .sep{background:#374151}.toolctx-select .iconbtn{color:#d1d5db}.toolctx-select .iconbtn:hover:not(:disabled){background:#374151;color:#f9fafb}.toolctx-select .iconbtn:active:not(:disabled){background:#4b5563}.stroke-width-ctrl{background:0 0;border-color:transparent}.stroke-width-ctrl label,.stroke-width-ctrl span{color:#9ca3af}.stroke-width-ctrl input[type=number]{background:#1f2937;border-color:#4b5563;color:#f9fafb}.touch-action-menu{background:#1f2937}.touch-action-menu button{background:#374151;color:#d1d5db}.touch-action-menu button:active{background:#4b5563}.uniform-scale-toggle{background:#1f2937;border-color:#4b5563;color:#9ca3af}.uniform-scale-toggle.active{background:#3b82f6;border-color:#3b82f6;color:#fff}}@media print{#selectionTooltip,.sel-box,.sel-handle,.sel-handle-hit,.sel-marquee,.sel-rotate,.sel-rotate-arm,.toolctx-select,.touch-action-menu,.uniform-scale-toggle{display:none!important}}#overlayLayer{pointer-events:none;touch-action:none;-webkit-user-select:none;user-select:none}#overlayLayer[pointer-events=all]{pointer-events:all}#stage{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}body.dragging{-webkit-user-select:none;user-select:none;cursor:move}.sel-box.loading{opacity:.5;pointer-events:none}.sel-box.error{stroke:#ef4444;stroke-width:3;animation:sel-error-pulse 1s ease-in-out infinite}@keyframes sel-error-pulse{0%,100%{opacity:1}50%{opacity:.5}}.sel-box.success{stroke:#10b981;animation:sel-success-flash .5s ease-out}@keyframes sel-success-flash{0%{stroke-width:2}50%{stroke-width:4;filter:drop-shadow(0 0 8px rgb(16 185 129 / .5))}100%{stroke-width:2}}@media (max-width:640px){.toolctx-select{gap:4px;padding:6px 8px}.toolctx-select .iconbtn{width:32px;height:32px;min-width:32px}.toolctx-select .iconbtn svg{width:18px;height:18px}.stroke-width-ctrl{flex:1 1 140px;max-width:260px;flex-wrap:wrap}.stroke-width-ctrl input[type=number]{width:45px}.touch-action-menu{bottom:70px;right:16px;gap:10px;padding:10px}.touch-action-menu button{width:52px;height:52px}.uniform-scale-toggle{bottom:70px;left:16px;width:52px;height:52px}}@media (min-width:1920px){.toolctx-select{padding:10px 16px;gap:10px}.toolctx-select .iconbtn{width:40px;height:40px;min-width:40px}.toolctx-select .iconbtn svg{width:22px;height:22px}.stroke-width-ctrl{flex:1 1 260px;max-width:520px}}:root{--touch-target-min:44px;--touch-target-comfortable:48px;--touch-spacing:8px;--touch-padding:12px}.toolctx-shape,.toolctx-shape *{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-touch-callout:none}.toolctx-shape input{-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text;user-select:text}@supports (overscroll-behavior:contain){.toolctx-shape{overscroll-behavior:contain}}@supports (-webkit-touch-callout:none){.toolctx-shape input[type=number],.toolctx-shape input[type=range]{font-size:16px!important}}.toolctx-shape button{-webkit-appearance:none;appearance:none}.toolctx-shape button,.toolctx-shape input{-webkit-tap-highlight-color:#fff0}@supports (padding:max(0px)){.toolctx-shape{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}}.toolctx-shape{display:inline-flex;align-items:center;gap:8px;padding:4px 8px;min-height:36px;font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:14px;line-height:1.4;animation:toolctx-fade-in .2s ease-out;touch-action:pan-y;-webkit-overflow-scrolling:touch}.toolctx-shape.touch-enabled{gap:10px;padding:6px 10px;min-height:var(--touch-target-min)}@media (max-width:768px){.toolctx-shape{flex-wrap:wrap;gap:6px}.toolctx-shape.touch-enabled{gap:var(--touch-spacing)}}@media (max-width:480px){.toolctx-shape{font-size:13px}.toolctx-shape .hint{display:none}}.toolctx-shape .label{min-width:54px;text-align:right;font-size:14px;font-weight:500;color:var(--text-primary,#333);white-space:nowrap}.toolctx-shape.touch-enabled .label{font-size:15px;min-width:60px}.toolctx-shape .num{width:60px;height:28px;padding:4px 8px;border:1px solid var(--border-color,#ccc);border-radius:4px;font-size:14px;font-family:inherit;text-align:center;background-color:var(--input-bg,#fff);color:var(--text-primary,#333);transition:all .2s ease;touch-action:manipulation;-moz-appearance:textfield;appearance:textfield;-webkit-appearance:none}.toolctx-shape.touch-enabled .num{width:70px;height:var(--touch-target-min);font-size:16px;padding:8px 12px;border-width:2px}.toolctx-shape #polygonSidesInput,.toolctx-shape #shapeSidesInput{width:72px}.toolctx-shape.touch-enabled #polygonSidesInput,.toolctx-shape.touch-enabled #shapeSidesInput{width:80px}.toolctx-shape .num::-webkit-inner-spin-button,.toolctx-shape .num::-webkit-outer-spin-button{-webkit-appearance:none;appearance:none;margin:0}.toolctx-shape .num:hover:not(:disabled){border-color:var(--hover-border,#999)}.toolctx-shape .num:focus{outline:0;border-color:var(--focus-color,#06c);box-shadow:0 0 0 3px var(--focus-ring,rgb(0 102 204 / .25))}.toolctx-shape.touch-enabled .num:focus{box-shadow:0 0 0 4px var(--focus-ring,rgb(0 102 204 / .25));transform:scale(1.05)}.toolctx-shape .num:invalid{border-color:var(--error-color,#d32f2f);background-color:var(--error-bg,#ffebee)}.toolctx-shape .num:disabled{opacity:.5;cursor:not-allowed;background-color:var(--disabled-bg,#f5f5f5)}.toolctx-shape .slider{width:120px;height:24px;cursor:pointer;accent-color:var(--accent-color,#0066cc);transition:opacity .2s ease;touch-action:pan-x;-webkit-appearance:none;appearance:none}.toolctx-shape.touch-enabled .slider{width:140px;height:32px}.toolctx-shape .slider::-webkit-slider-track{height:4px;background:var(--slider-track,#ddd);border-radius:2px}.toolctx-shape.touch-enabled .slider::-webkit-slider-track{height:6px}.toolctx-shape .slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent-color,#06c);border:2px solid var(--slider-thumb-border,#fff);box-shadow:0 2px 4px rgb(0 0 0 / .2);transition:transform .1s ease;cursor:pointer}.toolctx-shape.touch-enabled .slider::-webkit-slider-thumb{width:24px;height:24px;border-width:3px}.toolctx-shape .slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.toolctx-shape .slider::-webkit-slider-thumb:active{transform:scale(1.2)}.toolctx-shape .slider::-moz-range-track{height:4px;background:var(--slider-track,#ddd);border-radius:2px}.toolctx-shape.touch-enabled .slider::-moz-range-track{height:6px}.toolctx-shape .slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--accent-color,#06c);border:2px solid var(--slider-thumb-border,#fff);box-shadow:0 2px 4px rgb(0 0 0 / .2);cursor:pointer}.toolctx-shape.touch-enabled .slider::-moz-range-thumb{width:24px;height:24px;border-width:3px}.toolctx-shape .slider:focus{outline:0}.toolctx-shape .slider:focus::-webkit-slider-thumb{box-shadow:0 0 0 3px var(--focus-ring,rgb(0 102 204 / .25))}.toolctx-shape.touch-enabled .slider:focus::-webkit-slider-thumb{box-shadow:0 0 0 4px var(--focus-ring,rgb(0 102 204 / .25))}.toolctx-shape .slider:focus::-moz-range-thumb{box-shadow:0 0 0 3px var(--focus-ring,rgb(0 102 204 / .25))}.toolctx-shape.touch-enabled .slider:focus::-moz-range-thumb{box-shadow:0 0 0 4px var(--focus-ring,rgb(0 102 204 / .25))}.toolctx-shape .slider:disabled{opacity:.5;cursor:not-allowed}.toolctx-shape .hint{font-size:12px;color:var(--text-muted,#666);margin-left:8px;font-style:italic;opacity:.8;white-space:nowrap;transition:opacity .2s ease}.shape-type-toggle{display:inline-flex;gap:2px;padding:2px;background:#f0f2f5;border-radius:8px;border:1px solid #d9dfea}.touch-enabled .shape-type-toggle{gap:4px;padding:4px;border-radius:10px;border-width:2px}.shape-type-btn{display:inline-flex;align-items:center;justify-content:center;min-width:32px;min-height:32px;width:32px;height:32px;padding:0;border:none;border-radius:6px;background:#fff0;cursor:pointer;transition:all .15s ease;touch-action:manipulation;-webkit-tap-highlight-color:#fff0;-webkit-appearance:none;appearance:none}.touch-enabled .shape-type-btn{min-width:var(--touch-target-min);min-height:var(--touch-target-min);width:var(--touch-target-min);height:var(--touch-target-min);border-radius:8px}.shape-type-btn:hover{background:rgb(255 255 255 / .6)}.shape-type-btn:active{transform:scale(.95)}.shape-type-btn.active{background:#fff;box-shadow:0 1px 3px rgb(0 0 0 / .1)}.shape-type-btn.touch-active{background:rgb(0 102 204 / .1);transform:scale(.95)}.shape-type-btn svg{width:18px;height:18px;color:#6b7280;pointer-events:none}.touch-enabled .shape-type-btn svg{width:22px;height:22px}.shape-type-btn:hover svg{color:var(--ink,#333)}.shape-type-btn.active svg{color:var(--accent,#06c)}.shape-submenu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(4px) scale(.95);display:flex;flex-direction:column;gap:4px;padding:4px;background:#fff;border:1px solid #e6e8ee;border-radius:12px;box-shadow:0 4px 16px rgb(0 0 0 / .12),0 2px 8px rgb(0 0 0 / .08);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:100;margin-top:4px;touch-action:manipulation}.shape-submenu.touch-enabled{gap:6px;padding:6px;border-radius:14px;border-width:2px}.shape-submenu.show{opacity:1;transform:translateX(-50%) translateY(4px) scale(1);pointer-events:all}.shape-submenu-btn{display:inline-flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;width:40px;height:40px;border-radius:8px;border:1px solid #fff0;background:#fff;cursor:pointer;transition:all .15s ease;touch-action:manipulation;-webkit-tap-highlight-color:#fff0;-webkit-appearance:none;appearance:none}.touch-enabled .shape-submenu-btn{min-width:52px;min-height:52px;width:52px;height:52px;border-radius:10px;border-width:2px}.shape-submenu-btn:hover{background:#f0f2f5;border-color:#e6e8ee}.shape-submenu-btn:active{transform:scale(.95)}.shape-submenu-btn.active{background:#f0f9ff;border-color:#0ea5e9}.shape-submenu-btn.touch-active{background:#e0f2fe;transform:scale(.95)}.shape-submenu-btn svg{width:20px;height:20px;color:#5b657a;pointer-events:none}.touch-enabled .shape-submenu-btn svg{width:26px;height:26px}.shape-submenu-btn:hover svg{color:var(--ink,#333)}.shape-submenu-btn.active svg{color:#0ea5e9}.toolctx-shape .input-group,.toolctx-shape>div{display:inline-flex;align-items:center;gap:4px}.toolctx-shape.touch-enabled .input-group,.toolctx-shape.touch-enabled>div{gap:6px}.mode-cycle-btn{display:inline-flex;align-items:center;justify-content:center;min-width:32px;min-height:32px;width:32px;height:32px;padding:0;border:1px solid var(--border-color,#ccc);border-radius:6px;background:var(--input-bg,#fff);cursor:pointer;font-size:16px;transition:all .15s ease;touch-action:manipulation;-webkit-tap-highlight-color:#fff0;-webkit-appearance:none;appearance:none}.touch-enabled .mode-cycle-btn{min-width:var(--touch-target-min);min-height:var(--touch-target-min);width:var(--touch-target-min);height:var(--touch-target-min);font-size:18px}.mode-cycle-btn:hover{background:var(--hover-bg,#f5f5f5);border-color:var(--hover-border,#999)}.mode-cycle-btn:active{transform:scale(.95)}.mode-cycle-btn:focus{outline:0;border-color:var(--focus-color,#06c);box-shadow:0 0 0 3px var(--focus-ring,rgb(0 102 204 / .25))}#stage.touch-enabled{touch-action:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-touch-callout:none;overscroll-behavior:contain}#stage.touch-enabled circle,#stage.touch-enabled ellipse,#stage.touch-enabled polygon,#stage.touch-enabled rect,.touch-enabled .shape-element{stroke-width:inherit;touch-action:none}@keyframes toolctx-fade-in{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes touch-ripple{0%{transform:scale(.95);opacity:1}100%{transform:scale(1);opacity:1}}@media (prefers-contrast:high){.toolctx-shape .num{border-width:2px}.toolctx-shape .slider::-moz-range-thumb,.toolctx-shape .slider::-webkit-slider-thumb{border-width:3px}.toolctx-shape .num:focus,.toolctx-shape .slider:focus{outline-width:3px}.shape-submenu,.shape-type-toggle{border-width:2px}}@media (prefers-reduced-motion:reduce){.shape-submenu *,.shape-submenu-btn,.shape-type-btn,.toolctx-shape 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(pointer:coarse){.toolctx-shape{gap:10px;padding:8px 12px}.toolctx-shape .num{height:40px;font-size:15px}.shape-type-btn{min-width:40px;min-height:40px;width:40px;height:40px}.shape-submenu-btn{min-width:48px;min-height:48px;width:48px;height:48px}.mode-cycle-btn{min-width:40px;min-height:40px;width:40px;height:40px}}@media (max-width:767px) and (pointer:coarse){.toolctx-shape{gap:var(--touch-spacing);padding:var(--touch-spacing)}.toolctx-shape .num{height:var(--touch-target-comfortable);font-size:16px;width:75px}.toolctx-shape .slider{width:100px}.shape-type-btn{min-width:var(--touch-target-comfortable);min-height:var(--touch-target-comfortable);width:var(--touch-target-comfortable);height:var(--touch-target-comfortable)}.shape-submenu-btn{min-width:56px;min-height:56px;width:56px;height:56px}.mode-cycle-btn{min-width:var(--touch-target-comfortable);min-height:var(--touch-target-comfortable);width:var(--touch-target-comfortable);height:var(--touch-target-comfortable)}}@media 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(pointer:fine){.history-submenu-btn.has-content:not(:disabled):hover{background:#e0f2fe;border-color:#7dd3fc}}.history-submenu-btn svg{width:20px;height:20px;flex-shrink:0;color:currentColor;pointer-events:none}.history-submenu-btn .label{flex:1;text-align:left;font-weight:500;pointer-events:none}.history-submenu-btn .shortcut{font-size:11px;color:#6b7280;margin-left:auto;padding:3px 6px;background:#f3f4f6;border-radius:4px;font-family:‘SF Mono’,‘Monaco’,‘Inconsolata’,‘Consolas’,monospace;flex-shrink:0;pointer-events:none}@media (hover:hover) and (pointer:fine){.history-submenu-btn:hover .shortcut{background:#e5e7eb}}.history-submenu-btn.has-content .shortcut{background:#dbeafe;color:#1e40af}.toolctx-history{display:inline-flex;align-items:center;gap:12px}.toolctx-history .label{font-weight:600;color:#374151;min-width:60px}.toolctx-history .hint{font-size:13px;color:#6b7280;font-style:italic}.history-submenu-btn:focus-visible{outline:3px solid 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.shortcut{font-size:10px;padding:2px 4px}.tool-btn[data-tool=“history”].has-submenu::after{bottom:5px;right:5px;width:3px;height:3px}}@media (max-width:640px){.history-submenu{left:auto;right:100%;margin-right:8px;min-width:140px}.history-submenu-btn{padding:12px 14px;min-height:48px}}@media (max-width:480px){.history-submenu-btn .shortcut{display:none}.history-submenu{min-width:130px;padding:8px}.history-submenu-btn{padding:12px 10px;gap:8px}}@media (max-height:500px) and (orientation:landscape){.history-submenu{max-height:90vh;overflow-y:auto;-webkit-overflow-scrolling:touch}}@media (prefers-contrast:high){.history-submenu{border-width:2px}.history-submenu-btn{border-width:2px}.history-submenu-btn.has-content:not(:disabled){border-width:2px}}@media (prefers-reduced-motion:reduce){.history-submenu,.history-submenu-btn,.tool-btn[data-tool=“history”]{transition:none}.history-submenu-btn::before{animation:none}.history-submenu.show{transform:translateY(-50%)}}@media 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.shortcut{background:#1e3a5f;color:#93c5fd}.toolctx-history .label{color:#e5e7eb}.toolctx-history .hint{color:#9ca3af}.tool-btn[data-tool=“history”].has-submenu::after{background:#9ca3af}.tool-btn[data-tool=“history”][aria-expanded=“true”]::after{border-top-color:#9ca3af}}@media print{.history-submenu,.tool-btn[data-tool=“history”]{display:none!important}}.history-submenu,.history-submenu-btn,.tool-btn[data-tool=“history”]{-webkit-transform:translateZ(0);transform:translateZ(0);will-change:transform,opacity}.history-submenu-btn{-webkit-appearance:none;appearance:none}.history-submenu-btn:focus-visible,.tool-btn[data-tool=“history”]:focus-visible{outline:3px solid #3b82f6;outline-offset:2px}:root{--sd-color-primary:#007bff;--sd-color-primary-hover:#0056b3;--sd-color-danger:#dc2626;--sd-color-danger-hover:#b91c1c;--sd-color-success:#22c55e;--sd-color-warning:#f59e0b;--sd-color-neutral:#6b7280;--sd-color-border:#e5e7eb;--sd-color-surface:#ffffff;--sd-color-surface-hover:#f9fafb;--sd-color-text:#111827;--sd-color-text-muted:#6b7280;--sd-space-xs:0.25rem;--sd-space-sm:0.5rem;--sd-space-md:0.75rem;--sd-space-lg:1rem;--sd-space-xl:1.5rem;--sd-radius-sm:0.25rem;--sd-radius-md:0.5rem;--sd-radius-lg:0.75rem;--sd-shadow-sm:0 1px 2px 0 rgba(0, 0, 0, 0.05);--sd-shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.1);--sd-shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1);--sd-duration-fast:150ms;--sd-duration-normal:200ms;--sd-duration-slow:300ms;--sd-min-touch-target:44px;--sd-z-dropdown:1000;--sd-z-tooltip:1100;--sd-z-modal:1200}.sd-tool-component{box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,'Segoe 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.1);border-color:var(--sd-color-border);transform:translateY(-1px);box-shadow:var(--sd-shadow-md)}.toolctx-zoom .zoom-btn:active:not([disabled]){transform:scale(.98) translateY(0);box-shadow:var(--sd-shadow-sm)}.toolctx-zoom .zoom-btn[disabled]{opacity:.45;cursor:not-allowed;pointer-events:none;background:var(--sd-color-surface-hover)}.toolctx-zoom .zoom-btn:focus-visible{outline:3px solid var(--sd-color-primary);outline-offset:2px;box-shadow:0 0 0 4px rgb(0 123 255 / .1)}.toolctx-zoom .zoom-btn svg{width:20px;height:20px;pointer-events:none;transition:transform var(--sd-duration-fast) ease}.toolctx-zoom .zoom-btn:hover:not([disabled]) svg{transform:scale(1.1)}.toolctx-zoom .zoom-input{width:60px;padding:var(--sd-space-xs) var(--sd-space-sm);font-size:.8125rem;font-weight:600;font-variant-numeric:tabular-nums;text-align:center;border:1px solid var(--sd-color-border);border-radius:var(--sd-radius-sm);background:var(--sd-color-surface-hover);color:var(--sd-color-text);cursor:pointer;transition:all var(--sd-duration-normal) ease;outline:0}.toolctx-zoom .zoom-input:hover:not(:focus){background:var(--sd-color-surface);border-color:var(--sd-color-neutral)}.toolctx-zoom .zoom-input:focus{background:var(--sd-color-surface);border-color:var(--sd-color-primary);box-shadow:0 0 0 3px rgb(0 123 255 / .1);cursor:text}.toolctx-delete{display:flex;align-items:center;gap:var(--sd-space-md);padding:var(--sd-space-sm);min-height:var(--sd-min-touch-target);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.toolctx-delete .btn.danger{background:var(--sd-color-danger);color:var(--sd-color-surface);border:2px solid transparent;padding:var(--sd-space-sm) var(--sd-space-lg);min-width:80px;min-height:var(--sd-min-touch-target);font-weight:600;font-size:.9375rem;line-height:1.2;text-align:center;letter-spacing:.025em;border-radius:var(--sd-radius-md);cursor:pointer;user-select:none;transition:all var(--sd-duration-normal) ease-in-out;-webkit-appearance:none;appearance:none;box-shadow:var(--sd-shadow-sm)}.toolctx-delete .btn.danger:hover:not(:disabled){background:var(--sd-color-danger-hover);transform:translateY(-1px);box-shadow:var(--sd-shadow-md)}.toolctx-delete .btn.danger:focus-visible{outline:0;border-color:var(--sd-color-primary);box-shadow:0 0 0 3px rgb(220 38 38 / .25),var(--sd-shadow-sm)}.toolctx-delete .btn.danger:active:not(:disabled){background:#991b1b;transform:translateY(0);box-shadow:var(--sd-shadow-sm)}.toolctx-delete .btn.danger:disabled{opacity:.5;cursor:not-allowed;pointer-events:none;transform:none;box-shadow:none}#toolDelete,[data-tool=delete]{background:0 0;color:var(--sd-color-danger);border:2px solid 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