:root{color:#edf4f8;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--font-mono:"Cascadia Code", "SFMono-Regular", Consolas, monospace;--page:#0b1018;--page-raised:#0f1621;--surface:#121b27;--surface-raised:#172231;--surface-hover:#1c2939;--border:#263547;--border-strong:#3c5067;--text:#edf4f8;--text-soft:#bac7d4;--text-muted:#8293a6;--accent:#39c6c0;--accent-strong:#67dcd6;--accent-ink:#061b1b;--accent-soft:#39c6c021;--diff:#ff3f8e;--diff-soft:#ff3f8e1f;--danger:#ff7d83;--focus:#74e8e1;--shadow:0 18px 60px #02070d5c;background:#0b1018;font-family:Aptos,Segoe UI Variable,Segoe UI,system-ui,-apple-system,sans-serif}:root[data-theme=light]{color:#132230;--page:#eef3f7;--page-raised:#f7fafc;--surface:#fff;--surface-raised:#f5f8fa;--surface-hover:#e9f0f4;--border:#cbd7df;--border-strong:#91a5b3;--text:#132230;--text-soft:#405365;--text-muted:#667b8c;--accent:#087f7d;--accent-strong:#056a68;--accent-ink:#f4ffff;--accent-soft:#087f7d1c;--diff:#ce1760;--diff-soft:#ce17601a;--danger:#b9232e;--focus:#087f7d;--shadow:0 18px 60px #33485829;background:#eef3f7}*{box-sizing:border-box}html{background:var(--page);min-width:320px}body{background:var(--page);min-width:320px;min-height:100dvh;color:var(--text);margin:0}body,button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button,a{color:inherit}button{border:0}button:not(:disabled),a,input[type=range]{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}::selection{color:var(--accent-ink);background:var(--accent-strong)}.visually-hidden{clip:rect(0, 0, 0, 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}#root,.app-shell{min-height:100dvh}.app-shell{background:linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px), var(--page);background-position:top;background-size:72px 72px;flex-direction:column;display:flex}.site-header{z-index:10;border-bottom:1px solid var(--border);background:color-mix(in srgb, var(--page-raised) 94%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);justify-content:space-between;align-items:center;width:100%;min-height:68px;padding:0 32px;display:flex;position:relative}.site-header--compact{min-height:60px}.brand-link{min-width:0;color:inherit;text-decoration:none}.brand{align-items:center;gap:12px;min-width:0;display:inline-flex}.brand__text{gap:1px;min-width:0;display:grid}.brand__text strong{letter-spacing:-.025em;font-size:17px}.brand__text span{color:var(--text-muted);font-family:var(--font-mono);text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.pixel-mark{flex:0 0 31px;width:31px;height:31px;display:inline-block;position:relative}.pixel-mark>span{border:2px solid;border-radius:4px;width:21px;height:21px;display:block;position:absolute}.pixel-mark__back{background:var(--diff-soft);bottom:0;right:0;border-color:var(--diff)!important}.pixel-mark__front{background:var(--page-raised);top:0;left:0;border-color:var(--accent)!important}.pixel-mark__peel{clip-path:polygon(0 0,100% 0,0 100%);background:var(--accent);top:0;left:0;border-color:var(--accent-strong)!important}.header-actions{align-items:center;gap:6px;display:flex}.icon-button,.tool-button{width:36px;height:36px;color:var(--text-soft);background:0 0;border:1px solid #0000;border-radius:8px;flex:none;justify-content:center;align-items:center;padding:0;transition:color .15s,background-color .15s,border-color .15s,transform .12s;display:inline-flex}.icon-button:hover,.tool-button:hover{color:var(--text);border-color:var(--border);background:var(--surface-hover)}.icon-button:active,.tool-button:active,.button:active:not(:disabled),.text-button:active{transform:translateY(1px)}.icon-button--labeled,.tool-button--labeled{gap:7px;width:auto;padding:0 11px}.icon-button--danger:hover{color:var(--danger);border-color:color-mix(in srgb, var(--danger) 45%, var(--border));background:color-mix(in srgb, var(--danger) 9%, var(--surface))}.button{white-space:nowrap;border:1px solid #0000;border-radius:9px;justify-content:center;align-items:center;gap:9px;min-height:42px;padding:0 16px;font-size:14px;font-weight:700;transition:transform .12s,background-color .15s,border-color .15s;display:inline-flex}.button--primary{color:var(--accent-ink);background:var(--accent)}.button--primary:hover:not(:disabled){background:var(--accent-strong)}.button--secondary{color:var(--text);border-color:var(--border-strong);background:var(--surface-raised)}.button--secondary:hover:not(:disabled){border-color:var(--accent);background:var(--surface-hover)}.button--ghost{color:var(--text-soft);border-color:var(--border);background:0 0}.button--ghost:hover:not(:disabled){color:var(--text);background:var(--surface-hover)}.button--full{width:100%}.text-button{color:var(--text-soft);background:0 0;border-radius:7px;align-items:center;gap:6px;padding:6px 8px;font-size:13px;font-weight:650;display:inline-flex}.text-button:hover{color:var(--accent-strong);background:var(--accent-soft)}.landing{flex:1;width:min(1180px,100% - 48px);margin:0 auto;padding:70px 0 28px}.hero-section{grid-template-columns:minmax(0,1.65fr) minmax(280px,.75fr);align-items:end;gap:72px;min-height:262px;padding:0 0 50px;display:grid}.hero-copy{max-width:790px}.privacy-tag,.image-kind,.example-badge{border-radius:999px;align-items:center;gap:7px;width:fit-content;font-size:12px;font-weight:750;display:inline-flex}.privacy-tag{color:var(--accent-strong);border:1px solid color-mix(in srgb, var(--accent) 42%, var(--border));background:var(--accent-soft);padding:7px 10px}.hero-copy h1{max-width:760px;color:var(--text);letter-spacing:-.062em;margin:24px 0 17px;font-size:clamp(2.55rem,5.5vw,4.9rem);line-height:.98}.hero-copy>p{max-width:640px;color:var(--text-soft);margin:0;font-size:18px;line-height:1.6}.local-note{border-left:1px solid var(--border-strong);grid-template-columns:auto 1fr;align-items:center;gap:18px;padding:23px 0 6px 24px;display:grid}.local-note__number{color:var(--accent);font-family:var(--font-mono);letter-spacing:-.05em;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:750}.local-note>div:last-child{gap:5px;display:grid}.local-note strong{font-size:14px}.local-note span{color:var(--text-muted);font-size:12px;line-height:1.45}.upload-section{border:1px solid var(--border);background:var(--page-raised);box-shadow:var(--shadow);border-radius:16px;padding:24px}.upload-section__heading{justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px;display:flex}.section-kicker{color:var(--accent);font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;font-size:11px;font-weight:700}.upload-section__heading h2{letter-spacing:-.025em;margin:5px 0 0;font-size:21px}.upload-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.upload-slot{border:1px dashed var(--border-strong);background:var(--surface);border-radius:13px;min-width:0;min-height:246px;transition:border-color .16s,background-color .16s,transform .16s;position:relative;overflow:hidden}.upload-slot:hover,.upload-slot--dragging{border-color:var(--accent);background:color-mix(in srgb, var(--accent-soft) 70%, var(--surface))}.upload-slot--dragging{transform:translateY(-2px)}.drop-target{text-align:left;width:100%;min-height:244px;color:var(--text);background:0 0;flex-direction:column;justify-content:center;align-items:flex-start;padding:30px;display:flex}.drop-target__icon{border:1px solid var(--border);width:50px;height:50px;color:var(--accent);background:var(--page-raised);border-radius:11px;place-items:center;margin-bottom:24px;display:grid}.drop-target__icon--after{color:var(--diff)}.image-kind{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;border:1px solid;padding:4px 7px;font-size:10px}.image-kind--before{color:var(--accent-strong);border-color:color-mix(in srgb, var(--accent) 42%, var(--border));background:var(--accent-soft)}.image-kind--after{color:var(--diff);border-color:color-mix(in srgb, var(--diff) 42%, var(--border));background:var(--diff-soft)}.drop-target strong{margin-top:11px;font-size:16px}.drop-target>span:not(.drop-target__icon,.image-kind){color:var(--text-soft);margin-top:7px;font-size:13px;line-height:1.45}.drop-target small{color:var(--text-muted);margin-top:5px;font-size:11px}.upload-slot--ready{border-style:solid;grid-template-rows:184px auto;grid-template-columns:minmax(0,1fr);display:grid}.upload-slot__preview{background:conic-gradient(#d7dee3 25%, #f5f7f9 0 50%, #d7dee3 0 75%, #f5f7f9 0) 0 0 / 20px 20px;place-items:center;min-height:0;display:grid;position:relative;overflow:hidden}.upload-slot__preview img{object-fit:contain;width:100%;height:100%;display:block}.upload-slot__preview .image-kind{background:var(--page-raised);position:absolute;top:12px;left:12px}.upload-slot__file{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:14px;min-width:0;padding:14px 14px 14px 16px;display:flex}.upload-slot__file>div:first-child{gap:4px;min-width:0;display:grid}.upload-slot__file strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.upload-slot__file span{color:var(--text-muted);font-family:var(--font-mono);font-size:10px}.upload-slot__actions{flex:none;align-items:center;gap:4px;display:flex}.status-message{min-height:18px;color:var(--accent-strong);margin:12px 2px -7px;font-size:12px}.status-message+.status-message{margin-top:-18px}.status-message--error{color:var(--danger)}.benefit-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);grid-template-columns:repeat(3,1fr);margin-top:28px;display:grid}.benefit-strip>div{gap:6px;padding:20px 24px;display:grid}.benefit-strip>div+div{border-left:1px solid var(--border)}.benefit-strip strong{font-size:13px}.benefit-strip span{color:var(--text-muted);font-size:12px;line-height:1.5}.workspace{background:var(--page);flex-direction:column;flex:1;min-height:0;display:flex}.workspace-toolbar{z-index:5;border-bottom:1px solid var(--border);background:var(--page-raised);scrollbar-width:thin;align-items:center;gap:14px;min-height:58px;padding:8px 18px;display:flex;position:relative;overflow-x:auto}.mode-tabs,.view-tools,.background-tools{flex:none;align-items:center;gap:3px;display:flex}.mode-tabs{border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:3px}.mode-tab{min-height:34px;color:var(--text-muted);white-space:nowrap;background:0 0;border-radius:7px;align-items:center;gap:7px;padding:0 12px;font-size:12px;font-weight:700;display:inline-flex}.mode-tab:hover{color:var(--text);background:var(--surface-hover)}.mode-tab--active{color:var(--accent-strong);background:var(--accent-soft)}.mode-tab kbd{color:var(--text-muted);font-family:var(--font-mono);font-size:9px;font-weight:500}.view-tools,.background-tools{border-left:1px solid var(--border);padding-left:14px}.background-tools{margin-left:auto}.tool-button{width:34px;height:34px}.tool-button--labeled{width:auto;min-width:max-content}.tool-button--active{color:var(--accent-strong);border-color:color-mix(in srgb, var(--accent) 42%, var(--border));background:var(--accent-soft)}.actual-glyph{font-family:var(--font-mono);font-size:9px;font-weight:750}.workspace-grid{flex:1;grid-template-columns:minmax(0,1fr) 340px;min-height:0;display:grid}.viewport-panel{border-right:1px solid var(--border);background:#090d13;min-width:0;min-height:0;position:relative}.example-badge{z-index:4;color:var(--accent-strong);border:1px solid color-mix(in srgb, var(--accent) 40%, var(--border));background:var(--page-raised);padding:6px 9px;position:absolute;top:14px;left:14px}.compare-shell,.compare-scroller{width:100%;height:100%;min-height:420px}.compare-shell{position:relative}.compare-scroller{overscroll-behavior:contain;cursor:grab;touch-action:pan-x pan-y;place-items:center;padding:36px;display:grid;overflow:auto}.compare-scroller[data-panning=true]{cursor:grabbing;-webkit-user-select:none;user-select:none}.preview-light{background:#eef2f5}.preview-dark{background:#10151c}.preview-checker{background:conic-gradient(#26303b 25%, #1b232d 0 50%, #26303b 0 75%, #1b232d 0) 0 0 / 28px 28px}.compare-stage{flex:none;position:relative;overflow:visible;box-shadow:0 14px 48px #0000006b}.compare-content,.compare-layer-wrap,.compare-layer{position:absolute;inset:0}.compare-content{transform-origin:0 0;background:0 0;overflow:hidden}.compare-layer-wrap{transition:opacity .12s linear;overflow:hidden}.compare-layer{width:100%;height:100%;display:block}.compare-layer--hidden{visibility:hidden}.peel-divider{z-index:3;pointer-events:none;background:#f8ffff;width:2px;position:absolute;top:0;bottom:0;transform:translate(-1px);box-shadow:0 0 0 1px #07171f8c}.peel-divider span{background:var(--accent);border:2px solid #eefeff;border-radius:50%;width:28px;height:28px;position:absolute;bottom:12px;left:50%;transform:translate(-50%);box-shadow:0 5px 16px #00000059}.peel-divider span:before,.peel-divider span:after{color:var(--accent-ink);font-size:9px;font-weight:900;position:absolute;top:7px}.peel-divider span:before{content:"‹";left:5px}.peel-divider span:after{content:"›";right:5px}.peel-input{z-index:4;opacity:.01;width:100%;height:52px;margin:0;position:absolute;bottom:0;left:0;right:0}.canvas-labels{z-index:3;pointer-events:none;justify-content:space-between;display:flex;position:absolute;top:10px;left:10px;right:10px}.canvas-label{color:#f4f8fb;font-family:var(--font-mono);text-transform:uppercase;background:#070d13c7;border:1px solid #ffffff47;border-radius:6px;padding:5px 7px;font-size:10px;font-weight:700}.canvas-label--before{border-color:color-mix(in srgb, var(--accent) 65%, transparent)}.canvas-label--after{border-color:color-mix(in srgb, var(--diff) 65%, transparent)}.zoom-readout{z-index:4;border:1px solid var(--border);color:var(--text-soft);background:var(--page-raised);font-family:var(--font-mono);border-radius:6px;padding:5px 8px;font-size:10px;position:absolute;bottom:12px;right:12px}.control-panel{background:var(--page-raised);scrollbar-color:var(--border-strong) transparent;scrollbar-width:thin;min-width:0;overflow-y:auto}.control-section{border-bottom:1px solid var(--border);padding:22px}.source-summary{background:var(--border);grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;padding:12px;display:grid}.source-summary>div{background:var(--page-raised);gap:4px;min-width:0;padding:10px;display:grid}.source-summary span{color:var(--accent);font-family:var(--font-mono);text-transform:uppercase;font-size:9px;font-weight:750}.source-summary>div:last-child span{color:var(--diff)}.source-summary strong{text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.source-summary small{color:var(--text-muted);font-family:var(--font-mono);font-size:9px}.control-section h2{letter-spacing:-.02em;margin:0;font-size:16px}.control-section>p,.mismatch-notice p{color:var(--text-muted);margin:10px 0 18px;font-size:12px;line-height:1.55}.control-section__heading{color:var(--accent);justify-content:space-between;align-items:center;gap:16px;display:flex}.control-section__heading>div{gap:4px;display:grid}.control-section__heading span,.field-label,.control-value>span{color:var(--text-muted);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:9px;font-weight:700}.control-section__heading h2{color:var(--text);font-size:22px}.control-value,.range-control>span{justify-content:space-between;align-items:center;display:flex}.control-value output,.range-control output{color:var(--text);font-family:var(--font-mono);font-size:12px;font-weight:700}.range-control{gap:10px;display:grid}.range-control input,.peel-input{accent-color:var(--accent)}.range-control input{width:100%;margin:2px 0}.range-control small{color:var(--text-muted);font-size:10px;line-height:1.45}.blink-controls{gap:12px;display:grid}.segmented-control{border:1px solid var(--border);background:var(--surface);border-radius:9px;grid-template-columns:repeat(3,minmax(0,1fr));padding:3px;display:grid}.segmented-control button{min-width:0;min-height:31px;color:var(--text-muted);font-family:var(--font-mono);text-overflow:ellipsis;white-space:nowrap;background:0 0;border-radius:6px;padding:0 7px;font-size:9px;font-weight:700;overflow:hidden}.segmented-control button:hover,.segmented-control button.is-active{color:var(--accent-strong);background:var(--accent-soft)}.mismatch-notice{background:color-mix(in srgb, var(--diff-soft) 50%, transparent)}.mismatch-notice>div:first-child{color:var(--diff);align-items:center;gap:8px;display:flex}.mismatch-notice strong{color:var(--text);font-size:13px}.mismatch-notice .segmented-control{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:9px}.metrics-section h2,.export-section h2{margin-bottom:16px}.metrics-grid{border:1px solid var(--border);background:var(--border);border-radius:10px;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;display:grid;overflow:hidden}.metric{background:var(--surface);gap:5px;min-width:0;padding:12px;display:grid}.metric dt{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:9px;overflow:hidden}.metric dd{color:var(--text-soft);font-family:var(--font-mono);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:11px;font-weight:650;overflow:hidden}.metric--primary dd{color:var(--diff);font-size:14px}.export-section{gap:9px;display:grid}.background-note{color:var(--text-muted);margin:16px 22px 8px;font-size:10px;line-height:1.5}.reset-images{color:var(--danger);margin:0 14px 20px}.toast-region{z-index:40;pointer-events:none;position:fixed;bottom:20px;right:20px}.toast{border:1px solid color-mix(in srgb, var(--accent) 50%, var(--border));max-width:min(360px,100vw - 40px);color:var(--text);background:var(--surface-raised);box-shadow:var(--shadow);border-radius:9px;padding:12px 15px;font-size:13px}.dialog-backdrop{z-index:50;background:#03080db8;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.help-dialog{border:1px solid var(--border-strong);width:min(480px,100%);color:var(--text);background:var(--page-raised);box-shadow:var(--shadow);border-radius:15px;overflow:hidden}.help-dialog header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:17px 18px;display:flex}.help-dialog h2{margin:0;font-size:17px}.shortcut-list{margin:0;padding:10px 18px 18px}.shortcut-list>div{grid-template-columns:150px 1fr;align-items:center;gap:16px;padding:10px 0;display:grid}.shortcut-list>div+div{border-top:1px solid var(--border)}.shortcut-list dt{gap:5px;display:flex}.shortcut-list kbd{border:1px solid var(--border-strong);min-width:28px;color:var(--text);background:var(--surface-raised);font-family:var(--font-mono);text-align:center;box-shadow:inset 0 -2px 0 var(--border);border-radius:6px;padding:5px 7px;font-size:10px}.shortcut-list dd{color:var(--text-soft);margin:0;font-size:13px}@media (width<=1000px){.workspace-grid{grid-template-columns:minmax(0,1fr) 310px}.tool-button--labeled span{display:none}}@media (width<=820px){.site-header{min-height:60px;padding:0 16px}.brand__text span,.github-link span{display:none}.landing{width:min(100% - 32px,680px);padding-top:42px}.hero-section{grid-template-columns:1fr;gap:25px;padding-bottom:34px}.hero-copy h1{max-width:650px;font-size:clamp(2.4rem,10vw,4.3rem)}.local-note{max-width:520px}.upload-grid,.benefit-strip{grid-template-columns:1fr}.benefit-strip>div+div{border-top:1px solid var(--border);border-left:0}.workspace-grid{flex-direction:column;display:flex;overflow-y:auto}.viewport-panel{border-right:0;border-bottom:1px solid var(--border);flex:0 0 min(62dvh,620px);min-height:390px}.control-panel{flex:none;overflow:visible}.compare-shell,.compare-scroller{min-height:390px}}@media (width<=560px){.header-actions{gap:1px}.header-actions .icon-button--labeled span{display:none}.header-actions .icon-button--labeled{width:36px;padding:0}.landing{width:calc(100% - 24px);padding-top:30px}.hero-copy h1{margin-top:18px;font-size:clamp(2.25rem,12vw,3.5rem);line-height:1.01}.hero-copy>p{font-size:15px}.local-note{grid-template-columns:1fr;padding-left:16px}.upload-section{border-radius:13px;padding:14px}.upload-section__heading{flex-direction:column;align-items:stretch}.drop-target{padding:23px}.upload-slot__file{flex-direction:column;align-items:flex-start}.upload-slot__actions{justify-content:space-between;width:100%}.workspace-toolbar{gap:8px;padding-inline:10px}.mode-tab{padding:0 9px}.mode-tab kbd{display:none}.view-tools,.background-tools{padding-left:8px}.compare-scroller{padding:22px}.control-section{padding:20px 16px}.background-note{margin-inline:16px}.shortcut-list>div{grid-template-columns:112px 1fr}}
