:root{--bg-app: #16171a;--bg-panel: #1e2024;--bg-raise: #26282d;--bg-hover: #31343a;--bg-active: #3b3f46;--bg-input: #141518;--bg-viewport: #0f1012;--line: #2c2f35;--line-strong: #3a3e45;--text: #dfe2e6;--text-dim: #9aa0a8;--text-faint: #6d737b;--accent: #46a89a;--accent-dim: #2f6f66;--accent-soft: rgba(70, 168, 154, .18);--danger: #c9645c;--warn: #c9a15c;--toolbar-w: 44px;--options-h: 42px;--menu-h: 30px;--status-h: 26px;--panel-w: 268px;--radius: 5px;--radius-sm: 3px;--checker: conic-gradient(#2b2d31 25%, #232429 0 50%, #2b2d31 0 75%, #232429 0) 0 0 / 16px 16px;font-size:13px;line-height:1.35;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg-app);color:var(--text);font-family:Inter,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,-apple-system,sans-serif;font-size:13px;letter-spacing:0;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.icon{display:inline-flex;align-items:center;justify-content:center;flex:none}.icon svg{display:block}#app{display:grid;grid-template-rows:var(--menu-h) var(--options-h) 1fr var(--status-h);grid-template-columns:var(--toolbar-w) 1fr var(--panel-w);grid-template-areas:"menu   menu    menu" "tools  options panels" "tools  view    panels" "status status  status";height:100vh;height:100dvh}.menu-bar{grid-area:menu;display:flex;align-items:stretch;gap:2px;padding:0 8px;background:var(--bg-panel);border-bottom:1px solid var(--line);position:relative;z-index:40}.brand{display:flex;align-items:center;gap:7px;padding-right:12px;margin-right:4px;border-right:1px solid var(--line);color:var(--text-dim);font-weight:600;letter-spacing:.01em;white-space:nowrap}.brand-mark{width:16px;height:16px;border-radius:3px;background:linear-gradient(135deg,var(--accent) 0 50%,var(--bg-active) 50% 100%);border:1px solid var(--line-strong);flex:none}.menu-trigger{appearance:none;background:none;border:0;padding:0 9px;border-radius:var(--radius-sm);color:var(--text-dim);cursor:default;white-space:nowrap}.menu-trigger:hover,.menu-trigger[aria-expanded=true]{background:var(--bg-hover);color:var(--text)}.menu-spacer{flex:1}.menu-pop{position:absolute;top:calc(100% + 2px);min-width:216px;max-height:min(70vh,560px);overflow-y:auto;padding:4px;background:var(--bg-raise);border:1px solid var(--line-strong);border-radius:var(--radius);box-shadow:0 12px 32px #0000008c;display:flex;flex-direction:column;gap:1px;z-index:60}.menu-item{display:grid;grid-template-columns:18px 1fr auto;align-items:center;gap:8px;width:100%;padding:5px 8px;background:none;border:0;border-radius:var(--radius-sm);color:var(--text);text-align:left;cursor:default}.menu-item:hover:not(:disabled){background:var(--accent-dim)}.menu-item:disabled{color:var(--text-faint);cursor:default}.menu-item-icon{display:flex;color:var(--text-dim)}.menu-item:hover:not(:disabled) .menu-item-icon{color:var(--text)}.menu-item-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu-item-key{color:var(--text-faint);font-size:11px;font-variant-numeric:tabular-nums;white-space:nowrap}.menu-item-check{width:8px;height:8px;border-radius:50%;background:var(--accent)}.menu-sep{height:1px;margin:4px 6px;background:var(--line-strong)}.menu-heading{padding:6px 8px 3px;color:var(--text-faint);font-size:11px;text-transform:uppercase;letter-spacing:.06em}.toolbar{grid-area:tools;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 0;background:var(--bg-panel);border-right:1px solid var(--line);overflow-y:auto;scrollbar-width:thin}.tool-btn{position:relative;display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;background:none;border:1px solid transparent;border-radius:var(--radius);color:var(--text-dim);cursor:default;flex:none}.tool-btn:hover{background:var(--bg-hover);color:var(--text)}.tool-btn[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent-dim);color:var(--accent)}.tool-sep{width:22px;height:1px;margin:4px 0;background:var(--line-strong);flex:none}.swatches{margin-top:auto;position:relative;width:34px;height:34px;flex:none}.swatch{position:absolute;width:22px;height:22px;padding:0;border:1px solid var(--line-strong);border-radius:var(--radius-sm);cursor:default;background-color:var(--swatch-color);background-image:var(--checker);background-blend-mode:normal}.swatch:after{content:"";position:absolute;inset:0;border-radius:inherit;background:var(--swatch-color)}.swatch-fg{left:0;top:0;z-index:2}.swatch-bg{right:0;bottom:0;z-index:1}.swatch-actions{position:absolute;right:-2px;top:-4px;display:flex;flex-direction:column;gap:1px}.swatch-mini{display:flex;align-items:center;justify-content:center;width:13px;height:13px;padding:0;background:var(--bg-panel);border:1px solid var(--line-strong);border-radius:2px;color:var(--text-dim);cursor:default}.swatch-mini:hover{color:var(--text);background:var(--bg-hover)}.options{grid-area:options;display:flex;align-items:center;gap:12px;padding:0 10px;background:var(--bg-panel);border-bottom:1px solid var(--line);overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;white-space:nowrap}.options-tool{display:flex;align-items:center;gap:6px;padding-right:12px;margin-right:2px;border-right:1px solid var(--line);color:var(--text);font-weight:600}.field{display:flex;align-items:center;gap:6px;flex:none}.field-label{color:var(--text-dim);font-size:12px;white-space:nowrap}.slider{display:flex;align-items:center;gap:6px}.slider-value{min-width:34px;color:var(--text-dim);font-size:11px;font-variant-numeric:tabular-nums;text-align:right}input[type=range]{appearance:none;width:96px;height:16px;margin:0;background:none;cursor:ew-resize}input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:2px;background:var(--bg-active)}input[type=range]::-webkit-slider-thumb{appearance:none;width:11px;height:11px;margin-top:-4px;border-radius:50%;background:var(--accent);border:1px solid var(--bg-app)}input[type=range]::-moz-range-track{height:3px;border-radius:2px;background:var(--bg-active)}input[type=range]::-moz-range-thumb{width:11px;height:11px;border-radius:50%;background:var(--accent);border:1px solid var(--bg-app)}input[type=number],input[type=text],textarea,select{background:var(--bg-input);border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:3px 6px;color:var(--text);min-width:0}input[type=number]{width:62px;font-variant-numeric:tabular-nums}select{cursor:default;max-width:150px}input[type=color]{width:26px;height:22px;padding:0;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--bg-input);cursor:default}.segmented{display:inline-flex;border:1px solid var(--line-strong);border-radius:var(--radius-sm);overflow:hidden;flex:none}.segmented button{padding:3px 9px;background:var(--bg-input);border:0;border-right:1px solid var(--line);color:var(--text-dim);cursor:default}.segmented button:last-child{border-right:0}.segmented button[aria-pressed=true]{background:var(--accent-soft);color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:4px 11px;background:var(--bg-raise);border:1px solid var(--line-strong);border-radius:var(--radius-sm);color:var(--text);cursor:default;white-space:nowrap;flex:none}.btn:hover:not(:disabled){background:var(--bg-hover)}.btn:disabled{color:var(--text-faint);cursor:default}.btn-primary{background:var(--accent-dim);border-color:var(--accent);color:#eafaf7}.btn-primary:hover:not(:disabled){background:var(--accent);color:#0d1a18}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:26px;height:24px;padding:0;background:none;border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text-dim);cursor:default;flex:none}.icon-btn:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.icon-btn:disabled{color:var(--text-faint);opacity:.6}.icon-btn[aria-pressed=true]{color:var(--accent);background:var(--accent-soft)}.viewport{grid-area:view;position:relative;overflow:hidden;background:var(--bg-viewport);background-image:radial-gradient(circle at 1px 1px,#1b1d20 1px,transparent 0);background-size:22px 22px;touch-action:none;cursor:default}.viewport.is-panning{cursor:grabbing}.viewport.tool-hand{cursor:grab}.viewport.tool-zoom{cursor:zoom-in}.viewport.tool-zoom.is-out{cursor:zoom-out}.viewport.tool-move{cursor:move}.viewport.tool-text{cursor:text}.viewport.tool-eyedropper,.viewport.tool-crosshair{cursor:crosshair}#canvas-stack{position:absolute;inset:0}#composite-canvas,#overlay-canvas{position:absolute;top:0;left:0;image-rendering:auto}#composite-canvas{box-shadow:0 0 0 1px #000c,0 8px 30px #00000080;background-image:var(--checker)}#overlay-canvas{pointer-events:none}.viewport-hint{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);max-width:420px;padding:14px 18px;background:var(--bg-raise);border:1px solid var(--line-strong);border-radius:var(--radius);color:var(--text-dim);text-align:center}.panels{grid-area:panels;display:grid;grid-template-rows:1fr auto;min-height:0;background:var(--bg-panel);border-left:1px solid var(--line)}.panel{display:flex;flex-direction:column;min-height:0;border-bottom:1px solid var(--line)}.panel-head{display:flex;align-items:center;gap:6px;padding:6px 8px;color:var(--text-dim);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.05em;background:var(--bg-panel);border-bottom:1px solid var(--line);flex:none}.panel-head .spacer{flex:1}.panel-body{overflow-y:auto;scrollbar-width:thin;min-height:0}.layer-props{display:flex;align-items:center;gap:6px;padding:6px 8px;border-bottom:1px solid var(--line);flex:none}.layer-props select{flex:1;min-width:0}.layer-props .slider{width:96px;flex:none}.layer-props .slider input[type=range]{width:56px}.layer-list{display:flex;flex-direction:column-reverse;gap:2px;padding:4px}.layer-row{display:grid;grid-template-columns:20px 34px 1fr 20px 20px;align-items:center;gap:5px;padding:4px 5px;border:1px solid transparent;border-radius:var(--radius-sm);cursor:default;min-height:42px}.layer-row:hover{background:var(--bg-hover)}.layer-row.is-active{background:var(--accent-soft);border-color:var(--accent-dim)}.layer-vis,.layer-lock{display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;background:none;border:0;border-radius:2px;color:var(--text-faint);cursor:default}.layer-vis:hover,.layer-lock:hover{color:var(--text);background:var(--bg-active)}.layer-row.is-hidden .layer-thumb,.layer-row.is-hidden .layer-name{opacity:.45}.layer-thumb{width:34px;height:34px;border:1px solid var(--line-strong);border-radius:2px;background-image:var(--checker);background-size:8px 8px;object-fit:contain;display:block}.layer-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);font-size:12px;background:none;border:1px solid transparent;border-radius:2px;padding:1px 2px;width:100%;min-width:0}.layer-name:focus{background:var(--bg-input);border-color:var(--accent-dim);outline:none}.layer-badge{color:var(--text-faint);font-size:10px}.panel-actions{display:flex;align-items:center;gap:2px;padding:4px 6px;border-top:1px solid var(--line);flex:none}.panel-actions .spacer{flex:1}.history-panel{max-height:190px}.history-list{display:flex;flex-direction:column;gap:1px;padding:4px}.history-row{display:flex;align-items:center;gap:6px;padding:3px 6px;border-radius:2px;color:var(--text-dim);font-size:12px;cursor:default;border:1px solid transparent}.history-row:hover{background:var(--bg-hover);color:var(--text)}.history-row.is-current{color:var(--accent);background:var(--accent-soft);border-color:var(--accent-dim)}.history-empty{padding:8px;color:var(--text-faint);font-size:12px}.status{grid-area:status;display:flex;align-items:center;gap:12px;padding:0 10px;background:var(--bg-panel);border-top:1px solid var(--line);color:var(--text-faint);font-size:11px;font-variant-numeric:tabular-nums}.status .spacer{flex:1}.status-item{display:flex;align-items:center;gap:4px;white-space:nowrap}.zoom-controls{display:flex;align-items:center;gap:2px}.lang-switch{display:flex;align-items:center;border:1px solid var(--line-strong);border-radius:var(--radius-sm);overflow:hidden}.lang-switch button{padding:1px 7px;background:none;border:0;border-right:1px solid var(--line);color:var(--text-faint);cursor:default;font-size:11px}.lang-switch button:last-child{border-right:0}.lang-switch button[aria-pressed=true]{background:var(--accent-soft);color:var(--accent)}.modal-backdrop{position:fixed;inset:0;background:#08090a9e;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{width:min(460px,100%);max-height:min(86vh,720px);display:flex;flex-direction:column;background:var(--bg-raise);border:1px solid var(--line-strong);border-radius:var(--radius);box-shadow:0 24px 60px #0009}.modal-wide{width:min(620px,100%)}.modal-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);font-weight:600}.modal-head .spacer{flex:1}.modal-body{padding:12px;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.modal-foot{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}.modal-foot .spacer{flex:1}.form-row{display:grid;grid-template-columns:116px 1fr auto;align-items:center;gap:8px}.form-row>.field-label{color:var(--text-dim);font-size:12px}.form-row input[type=range]{width:100%}.form-note{color:var(--text-faint);font-size:11px}.preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:6px}.preset{padding:6px 8px;background:var(--bg-panel);border:1px solid var(--line-strong);border-radius:var(--radius-sm);color:var(--text-dim);cursor:default;text-align:left;font-size:12px}.preset:hover{background:var(--bg-hover);color:var(--text)}.preset[aria-pressed=true]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.preset small{display:block;color:var(--text-faint);font-size:10px;font-variant-numeric:tabular-nums}.shortcut-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:3px 14px}.shortcut{display:flex;align-items:baseline;gap:8px;font-size:12px;color:var(--text-dim)}.shortcut kbd{margin-left:auto;padding:1px 5px;background:var(--bg-panel);border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:3px;color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;white-space:nowrap}.modal-hint{color:var(--text-faint);font-size:11px}.gradient-strip{width:100%;height:14px;border:1px solid var(--line-strong);border-radius:3px}.boot{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--bg-app);color:var(--text-dim);z-index:200}.boot[hidden]{display:none}.boot-mark{width:30px;height:30px;border-radius:6px;background:linear-gradient(135deg,var(--accent) 0 50%,var(--bg-active) 50% 100%);animation:boot-pulse 1.4s ease-in-out infinite}@keyframes boot-pulse{0%,to{opacity:.45;transform:scale(.94)}50%{opacity:1;transform:scale(1)}}.boot-error{max-width:420px;padding:12px 16px;background:var(--bg-raise);border:1px solid var(--danger);border-radius:var(--radius);color:var(--text);text-align:center}.toast-stack{position:fixed;right:14px;bottom:34px;display:flex;flex-direction:column;gap:6px;z-index:120;pointer-events:none}.toast{max-width:320px;padding:8px 11px;background:var(--bg-raise);border:1px solid var(--line-strong);border-left:3px solid var(--accent);border-radius:var(--radius-sm);color:var(--text);font-size:12px;box-shadow:0 8px 24px #00000080;animation:toast-in .16s ease-out}.toast.is-error{border-left-color:var(--danger)}.toast.is-warn{border-left-color:var(--warn)}@keyframes toast-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@media(max-width:900px){#app{grid-template-columns:var(--toolbar-w) 1fr;grid-template-rows:var(--menu-h) var(--options-h) 1fr 216px var(--status-h);grid-template-areas:"menu   menu" "tools  options" "tools  view" "panels panels" "status status"}.panels{grid-template-rows:1fr;border-left:0;border-top:1px solid var(--line)}.history-panel,.brand span{display:none}}