:root{--bg: #ffffff;--surface: #fafafa;--surface-2: #f4f4f5;--surface-3: #e4e4e7;--border: #e4e4e7;--border-strong: #d4d4d8;--text: #18181b;--text-dim: #52525b;--text-muted: #71717a;--accent: #18181b;--accent-fg: #ffffff;--accent-soft: rgba(24, 24, 27, .06);--accent-ring: rgba(24, 24, 27, .12);--success: #16a34a;--warn: #d97706;--danger: #dc2626;--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--ease: cubic-bezier(.2, 0, 0, 1);--t-fast: .1s;--t-base: .14s}@media(prefers-color-scheme:dark){:root{--bg: #0a0a0a;--surface: #111113;--surface-2: #18181b;--surface-3: #27272a;--border: #27272a;--border-strong: #3f3f46;--text: #fafafa;--text-dim: #a1a1aa;--text-muted: #8a8a93;--accent: #fafafa;--accent-fg: #18181b;--accent-soft: rgba(255, 255, 255, .06);--accent-ring: rgba(255, 255, 255, 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infinite alternate}@keyframes heroWipe{0%,12%{width:100%}88%,to{width:38%}}@keyframes heroWipeLine{0%,12%{left:100%}88%,to{left:38%}}@media(prefers-reduced-motion:reduce){.hero-before-wrap{animation:none;width:50%}.hero-demo-divider{animation:none;left:50%}}.dropzone{border:1px dashed var(--border-strong);border-radius:var(--radius-lg);padding:48px 24px;background:var(--surface);cursor:pointer;outline:none;transition:border-color var(--t-base) var(--ease),background var(--t-base) var(--ease)}.dropzone:hover,.dropzone:focus,.dropzone.over{border-color:var(--text-dim);background:var(--surface-2)}.dropzone-inner{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}.drop-icon{width:28px;height:28px;color:var(--text-muted)}.drop-title{font-weight:500;font-size:15px}.drop-sub{color:var(--text-muted);font-size:12px;max-width:460px}.drop-bulk{margin-top:6px;font-size:11px;color:var(--text-dim);background:var(--surface-2);border:1px solid 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var(--border);padding:5px 8px;border-radius:6px;pointer-events:none;user-select:none;display:none;z-index:2;opacity:.92}.compare-label-left{left:12px}.compare-label-right{right:12px}.view-compare .compare-label{display:block}.slider{position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--text);transform:translate(-.5px);pointer-events:none}.slider-handle{position:absolute;top:50%;left:50%;width:28px;height:28px;border-radius:50%;background:var(--bg);border:1px solid var(--border-strong);transform:translate(-50%,-50%);pointer-events:all;cursor:ew-resize}.slider-handle:before,.slider-handle:after{content:"";position:absolute;top:50%;width:0;height:0;border-top:4px solid transparent;border-bottom:4px solid transparent;transform:translateY(-50%)}.slider-handle:before{left:6px;border-right:5px solid var(--text)}.slider-handle:after{right:6px;border-left:5px solid var(--text)}.view-original .cutout-layer,.view-original .slider{display:none}.view-cutout #origImg,.view-cutout 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details[open]>summary{color:var(--text)}.panel details>*:not(summary){padding:0 10px}.panel details[open]>*:last-child:not(summary){padding-bottom:10px}.row{display:grid;grid-template-columns:1fr;gap:6px;padding-top:4px;padding-bottom:4px;font-size:12px}.row>span{display:flex;justify-content:space-between;color:var(--text-dim);font-weight:500}.row>span output{color:var(--text);font-variant-numeric:tabular-nums}.row.inline{display:flex;align-items:center;gap:8px;padding-top:8px;padding-bottom:4px}.row.inline>span{color:var(--text);font-weight:400}.hint{margin:0 0 8px;font-size:11px;color:var(--text-muted);line-height:1.4}.panel-subhead{margin:12px 0 6px;font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted)}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:18px;background:transparent;outline:none}input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--border-strong);border-radius:1px}input[type=range]::-moz-range-track{height:2px;background:var(--border-strong);border-radius:1px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:12px;height:12px;border-radius:50%;background:var(--text);margin-top:-5px;cursor:ew-resize;border:0}input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:var(--text);cursor:ew-resize;border:0}input[type=range]:hover::-webkit-slider-thumb{background:var(--accent)}input[type=range]:hover::-moz-range-thumb{background:var(--accent)}input[type=checkbox]{appearance:none;-webkit-appearance:none;width:14px;height:14px;border:1px solid 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var(--ease)}.brush-btn:hover{border-color:var(--text-dim);color:var(--text)}.brush-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}.brush-history{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:6px}.brush-reset{margin-top:8px;width:100%}.brush-cursor{position:fixed;pointer-events:none;border-radius:50%;z-index:9999;transform:translate(-50%,-50%);display:none;border:1px solid var(--text);mix-blend-mode:difference}.brush-cursor.keep,.brush-cursor.erase{border-color:var(--text)}.subjects-strip{grid-column:1 / -1;display:flex;gap:6px;padding:6px 8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow-x:auto}.subject-thumb{flex-shrink:0;width:60px;height:76px;border:1px solid var(--border);border-radius:var(--radius);background-color:var(--surface-2);background-image:linear-gradient(45deg,var(--surface-3) 25%,transparent 25%),linear-gradient(-45deg,var(--surface-3) 25%,transparent 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var(--border)}.subject-thumb.active .subject-label{color:var(--text)}.recents{margin-top:18px}.recents.hidden{display:none}.recents-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px}.recents-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.recents-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}.recent-item{flex:0 0 auto;width:64px;height:64px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;background-color:var(--surface-2);background-image:linear-gradient(45deg,var(--surface-3) 25%,transparent 25%),linear-gradient(-45deg,var(--surface-3) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--surface-3) 75%),linear-gradient(-45deg,transparent 75%,var(--surface-3) 75%);background-size:12px 12px;background-position:0 0,0 6px,6px -6px,-6px 0;transition:border-color var(--t-fast) var(--ease)}.recent-item:hover{border-color:var(--text-dim)}.recent-item img{width:100%;height:100%;object-fit:contain;display:block}.batch{margin-top:24px}.batch.hidden{display:none}.batch h2{font-size:14px;font-weight:600;margin:0}.batch-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.batch-actions{display:flex;gap:8px}.batch-progress{display:flex;align-items:center;gap:10px;margin-bottom:10px}.batch-progress.hidden{display:none}.batch-bar{flex:1;height:6px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;overflow:hidden}.batch-bar-fill{height:100%;width:0%;background:var(--text);border-radius:999px;transition:width .18s var(--ease)}.batch-status{font-size:11px;color:var(--text-dim);font-variant-numeric:tabular-nums;white-space:nowrap;min-width:132px;text-align:right}.batch-hint{font-size:11px;color:var(--text-dim);margin:0 0 12px}.batch-hint.hidden{display:none}.batch-tools{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px;margin:0 0 14px;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.batch-tool{display:flex;flex-direction:column;gap:4px;font-size:11px;color:var(--text-dim)}.batch-tool span{font-weight:600}.batch-tool select,.batch-tool input{font:inherit;font-size:12px;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:6px 8px;min-width:180px}.batch-tool input{min-width:160px}.linkbtn{background:none;border:none;padding:0;font:inherit;color:var(--text);text-decoration:underline;text-underline-offset:2px;cursor:pointer}.linkbtn:hover{opacity:.7}.thumb.done .badge{color:var(--success)}.thumb.edited{outline:2px solid var(--text);outline-offset:-2px}.thumb.edited .badge{color:var(--text)}.thumb.cancelled .badge{color:var(--text-dim)}.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-bottom:12px}.thumb{position:relative;aspect-ratio:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer}.thumb img{width:100%;height:100%;object-fit:contain;display:block}.thumb .badge{position:absolute;bottom:6px;left:6px;font-size:10px;background:var(--bg);padding:2px 6px;border-radius:4px;color:var(--text-dim);border:1px solid var(--border)}.thumb.processing .badge{color:var(--warn)}.thumb.error .badge{color:var(--danger)}.info{margin-top:32px;font-size:13px;color:var(--text-dim)}.info details summary{cursor:pointer;font-weight:500;padding:8px 0}.info ul{padding-left:18px;line-height:1.6}.footer{margin-top:48px;padding:16px 24px;border-top:1px solid var(--border);text-align:center;font-size:11px;color:var(--text-muted);display:flex;flex-direction:column;gap:4px}.footer-by{color:var(--text-dim)}.footer-by a{color:var(--text);font-weight:600;text-decoration:none;border-bottom:1px solid var(--border-strong)}.footer-by a:hover{border-bottom-color:var(--text)}.toast-container{position:fixed;top:60px;right:20px;display:flex;flex-direction:column;gap:6px;z-index:10000;pointer-events:none;max-width:calc(100vw - 40px)}.toast{background:var(--bg);border:1px solid var(--border-strong);border-radius:var(--radius);padding:8px 12px;color:var(--text);font-size:12px;line-height:1.4;pointer-events:auto;min-width:240px;max-width:380px;display:flex;align-items:flex-start;gap:8px;animation:toast-in .14s var(--ease)}.toast-success{border-left:2px solid var(--success)}.toast-error{border-left:2px solid var(--danger)}.toast-warn{border-left:2px solid var(--warn)}.toast.fade-out{animation:toast-out .14s var(--ease) forwards}.toast .toast-msg{flex:1;word-break:break-word}.toast .toast-close{background:none;border:0;color:var(--text-muted);font-size:14px;cursor:pointer;line-height:1;padding:0}.toast .toast-close:hover{color:var(--text)}@keyframes toast-in{0%{transform:translateY(-4px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes toast-out{to{transform:translateY(-4px);opacity:0}}.modal{position:fixed;inset:0;z-index:10001;display:flex;align-items:center;justify-content:center;padding:24px}.modal.hidden{display:none}.modal-backdrop{position:absolute;inset:0;background:color-mix(in srgb,var(--bg) 70%,#000)}.modal-body{position:relative;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);max-width:500px;width:100%;max-height:80vh;overflow:auto}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;font-size:14px;font-weight:600;letter-spacing:-.01em}.modal-close{background:none;border:0;color:var(--text-muted);font-size:18px;cursor:pointer;line-height:1;padding:0 4px}.modal-close:hover{color:var(--text)}.modal-content{padding:16px 20px 20px;display:grid;gap:16px}.kbd-group-title{font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:6px}.kbd-row{display:flex;align-items:center;gap:10px;padding:3px 0;font-size:12px;color:var(--text-dim)}.kbd-row span{color:var(--text)}kbd{display:inline-block;background:var(--surface);border:1px solid var(--border-strong);border-radius:4px;padding:1px 5px;font-family:var(--font-mono);font-size:10px;color:var(--text);min-width:16px;text-align:center}.zoom-indicator{font-variant-numeric:tabular-nums;font-size:11px;padding:6px 8px;min-width:50px;text-align:center}.zoom-indicator.zoomed{color:var(--accent);border-color:var(--border-strong)}.badge-beta{display:inline-block;margin-left:4px;padding:0 4px;border-radius:4px;background:var(--surface-3);color:var(--text-dim);font-size:9px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;vertical-align:middle;line-height:14px}.tab.active .badge-beta{background:var(--border-strong);color:var(--text)}.stage.space-down,.stage.space-down .compare{cursor:grab!important}.stage.space-down.panning,.stage.space-down.panning .compare{cursor:grabbing!important}.stage.space-down .brush-cursor{display:none!important}@media(max-width:820px){.topbar{height:auto;padding:8px 12px}.topbar{flex-direction:column;align-items:stretch;gap:6px}.topbar-actions{justify-content:flex-start}.toggle input[type=url]{min-width:0;flex:1}.container{padding:20px 12px 48px}.hero{flex-direction:column;align-items:stretch;gap:18px}.hero h1{font-size:26px}.hero-demo{flex:0 0 auto}.hero-demo-frame{width:100%;height:180px}.adv-panel{width:min(320px,calc(100vw - 24px))}.result{grid-template-columns:1fr}.stage,.stage-inner,.compare{min-height:320px}.brush-cursor{display:none!important}.toast-container{inset:auto 12px 76px;max-width:none}.toast{min-width:0;max-width:none}.result-toolbar{position:sticky;top:0;z-index:30;background:var(--bg);flex-wrap:wrap;gap:6px}body{padding-bottom:56px}.panel{position:fixed;left:0;right:0;bottom:0;z-index:45;max-height:82vh;overflow-y:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border-strong);border-radius:16px 16px 0 0;box-shadow:0 -8px 28px #0000002e;transform:translateY(calc(100% - 56px));transition:transform .24s var(--ease);overscroll-behavior:contain}.panel.sheet-open{transform:translateY(0)}.sheet-handle{display:flex;align-items:center;justify-content:center;gap:10px;position:sticky;top:0;z-index:2;width:100%;height:56px;background:var(--surface);border:0;border-bottom:1px solid var(--border);color:var(--text);font:inherit;font-size:13px;font-weight:600;cursor:pointer}.sheet-grip{position:absolute;top:8px;left:50%;transform:translate(-50%);width:36px;height:4px;border-radius:2px;background:var(--border-strong)}.tab,.bg-opt,.brush-btn,.btn,.export-chip,.sample{min-height:40px}.bg-opt{min-width:60px}}