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rgba(0,0,0,0.28);--sheet-shadow:0 10px 30px -12px rgba(0,0,0,0.35)}:root[data-theme=dark]{color-scheme:dark;--background:var(--color9);--foreground:var(--color1);--card:var(--color8);--card-line:transparent;--well:var(--color9);--stage:#191919;--dash:var(--color7);--rule:var(--color7);--muted:var(--color5);--quiet:var(--color6);--btn:var(--color7);--btn-text:var(--color1);--btn-hover:var(--color6);--track:var(--color7);--fill:var(--color5);--accent:#e2553f;--accent-hover:#ef6a54;--accent-soft:rgba(226,85,63,0.14);--accent-line:rgba(226,85,63,0.9);--flag:var(--accent);--shadow:0 1px 2px rgba(0,0,0,0.3),0 16px 34px -20px rgba(0,0,0,0.7);--sheet-shadow:0 18px 44px rgba(0,0,0,0.55)}@media 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7px);width:1.5px;background:var(--accent-line);opacity:.7;pointer-events:none}.margin-column{position:relative;overflow-y:auto;min-height:0;scrollbar-width:thin}.margin-inner{padding-bottom:24px}.stage{display:flex;flex-direction:column;min-width:0;background:var(--stage);overflow:hidden}.group,.stage{border:1px solid var(--card-line);border-radius:var(--radius-card)}.group{background:var(--card);box-shadow:var(--shadow);padding:16px}.group+.group{margin-top:14px}.group-title{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--quiet);margin:0 0 12px}.group-title:before{content:"";width:12px;height:2px;border-radius:2px;background:var(--accent);flex:none}.hint{font-size:12px;line-height:1.5;color:var(--quiet);margin:8px 0 0}.field{margin-bottom:14px}.field:last-child{margin-bottom:0}.field-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:4px}.field-head 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var(--rule);background:var(--well);color:var(--foreground);border-radius:var(--radius-sm);padding:8px 14px;font-size:13px;font-weight:700;cursor:pointer;transition:background .12s ease,border-color .12s ease,transform .08s ease}.btn:hover:not(:disabled){border-color:var(--muted)}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.btn-quiet{background:transparent;color:var(--muted)}.btn-quiet:hover:not(:disabled){color:var(--foreground)}.btn-wide{width:100%;justify-content:center}.stage-bar{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--card-line);font-size:13px;flex-wrap:wrap}.stage-bar .spacer{flex:1 1}.tabs{display:flex;gap:3px;background:var(--card);border-radius:var(--radius-sm);padding:3px}.tabs button{border:0;background:transparent;color:var(--muted);padding:5px 14px;border-radius:7px;cursor:pointer;font-size:13px;font-weight:600}.tabs button[aria-pressed=true]{background:var(--btn);color:var(--btn-text)}.status{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;color:var(--quiet);padding-right:4px}.status[data-busy=true]{color:var(--foreground)}.status[data-busy=true]:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);animation:blink .9s ease-in-out infinite}@keyframes blink{50%{opacity:.2}}.stage-body{flex:1 1;display:flex;align-items:center;justify-content:center;padding:22px;min-height:0;overflow:auto}.sheet{max-width:100%;max-height:100%;background:#fff;border-radius:4px;overflow:hidden;box-shadow:var(--sheet-shadow)}.sheet img{display:block;max-width:100%;max-height:calc(100dvh - 300px);width:auto;height:auto}.dropzone{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;border:1px dashed var(--dash);border-radius:var(--radius);background-color:var(--well);background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 27px,var(--rule) 27px,var(--rule) 28px);background-position:0 14px;padding:44px 34px;text-align:center;max-width:420px;overflow:hidden;cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.dropzone:before{content:"";position:absolute;top:0;bottom:0;left:30px;width:1.5px;background:var(--accent-line);opacity:.55;pointer-events:none}.dropzone:hover{border-color:var(--muted)}.dropzone[data-over=true]{border-color:var(--accent);background-color:var(--accent-soft)}.dropzone h2{font-size:17px;font-weight:600;color:var(--foreground);margin:0}.dropzone p{color:var(--quiet);font-size:13px;margin:0 0 16px}.editor{position:relative;display:inline-block;max-width:100%;line-height:0;touch-action:none;border-radius:4px;overflow:hidden;box-shadow:var(--sheet-shadow)}.editor img{display:block;max-width:100%;max-height:calc(100dvh - 300px)}.editor svg{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair}.quad-fill{fill:rgba(211,59,44,.1);stroke:#d33b2c;stroke-width:2;filter:drop-shadow(0 0 2px rgba(0,0,0,.55))}.quad-handle{fill:#fff;stroke:#d33b2c;stroke-width:3;cursor:-webkit-grab;cursor:grab;filter:drop-shadow(0 1px 3px rgba(0,0,0,.5))}.quad-handle:active{cursor:-webkit-grabbing;cursor:grabbing}.compare{position:relative;display:inline-block;line-height:0;max-width:100%;touch-action:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;border-radius:4px;overflow:hidden;box-shadow:var(--sheet-shadow)}.compare img{display:block;max-width:100%;max-height:calc(100dvh - 300px)}.compare .after{position:absolute;inset:0;overflow:hidden}.compare .after img{max-width:none;max-height:none;width:100%;height:100%}.wipe{position:absolute;top:0;bottom:0;width:2px;background:#d33b2c;box-shadow:0 0 0 1px rgba(0,0,0,.25);cursor:ew-resize}.wipe:before{content:"";position:absolute;inset:0 -14px}.wipe-grip{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:50%;background:#d33b2c;color:#fff;display:grid;place-items:center;font-size:13px;line-height:1;box-shadow:0 2px 8px rgba(0,0,0,.45)}.compare-label{position:absolute;top:10px;font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;background:rgba(0,0,0,.68);color:#fff;padding:3px 8px;border-radius:5px;line-height:1.4}.strip{display:flex;gap:10px;padding:12px;border-top:1px solid var(--card-line);overflow-x:auto;align-items:flex-end}.thumb{position:relative;flex:0 0 auto;border:2px solid transparent;background:#fff;padding:0;cursor:pointer;border-radius:8px;line-height:0;overflow:hidden;transition:border-color .12s ease}.thumb img{display:block;height:74px;width:auto}.thumb-index{position:absolute;left:4px;bottom:4px;font-size:9.5px;font-weight:700;background:rgba(0,0,0,.72);color:#fff;padding:1px 5px;border-radius:4px;line-height:1.4}.thumb[data-selected=true]{border-color:rgba(211,59,44,.5);border-style:dashed}.thumb[aria-current=true]{border-color:var(--accent);border-style:solid}.thumb[aria-current=true] .thumb-index{background:var(--accent)}.thumb-remove{position:absolute;top:-7px;right:-7px;width:19px;height:19px;border-radius:50%;border:1px solid var(--rule);background:var(--card);color:var(--foreground);font-size:12px;line-height:1;cursor:pointer;display:grid;place-items:center;padding:0}.thumb-remove:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.add-page{flex:0 0 auto;height:78px;width:62px;border:1px dashed var(--dash);background:transparent;color:var(--muted);border-radius:8px;cursor:pointer;font-size:21px;transition:border-color .12s ease,color .12s ease}.add-page:hover{border-color:var(--accent);color:var(--accent)}.error{margin:14px 0 0;padding:11px 13px;border:1px solid var(--card-line);font-size:13px}.error,.scope{background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:var(--radius-sm)}.scope{font-size:12.5px;font-weight:600;margin:0 0 10px;padding:8px 11px;color:var(--foreground)}@media (max-width:900px){.shell{height:auto;min-height:100dvh;overflow:visible}.workspace{grid-template-columns:1fr}.workspace:before{display:none}.margin-column{overflow-y:visible;order:2}.stage{order:1;min-height:56dvh}.compare img,.editor img,.sheet img{max-height:46dvh}.masthead{padding:14px 16px;flex-wrap:wrap;gap:10px}.privacy-note,.tagline{display:none}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}