*,:after,:before{box-sizing:border-box}:root{--bg:#f4f4f5;--surface:#fff;--border:#e4e4e7;--text-primary:#18181b;--text-secondary:#71717a;--text-muted:#a1a1aa;--accent:#6366f1;--accent-hover:#4f46e5;--accent-subtle:#eef2ff;--split-color:#ef4444;--split-bg:#fef2f2;--split-bg-hover:#fee2e2;--split-border:#fca5a5;--doc-color:#a855f7;--doc-bg:#faf5ff;--doc-bg-hover:#f3e8ff;--doc-border:#d8b4fe;--shadow-sm:0 1px 2px #0000000f,0 1px 3px #0000000a;--shadow-md:0 4px 6px #0000000f,0 2px 4px #0000000a;--shadow-page:0 4px 24px #0000001a,0 1px 4px #0000000f;--radius:8px;--radius-sm:5px;--toolbar-h:56px}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f4f4f5;background:var(--bg);color:#18181b;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,sans-serif;margin:0;padding:0}.app{min-height:100vh;padding-top:56px;padding-top:var(--toolbar-h)}.toolbar{align-items:center;background:#fff;background:var(--surface);border-bottom:1px solid #e4e4e7;border-bottom:1px solid var(--border);box-shadow:0 1px 8px #0000000d;display:flex;gap:6px;height:56px;height:var(--toolbar-h);left:0;padding:0 20px;position:fixed;right:0;top:0;z-index:1000}.toolbar-title{color:#18181b;color:var(--text-primary);flex-shrink:0;font-size:15px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}.toolbar-filename{background:#f4f4f5;background:var(--bg);border:1px solid #e4e4e7;border:1px solid var(--border);border-radius:99px;color:#71717a;color:var(--text-secondary);flex-shrink:1;font-size:12px;margin-right:auto;max-width:200px;overflow:hidden;padding:3px 10px;text-overflow:ellipsis;white-space:nowrap}.toolbar-spacer{flex:1 1}.toolbar-divider{background:#e4e4e7;background:var(--border);flex-shrink:0;height:20px;margin:0 2px;width:1px}.btn{align-items:center;border:1px solid #0000;border-radius:5px;border-radius:var(--radius-sm);cursor:pointer;display:inline-flex;flex-shrink:0;font-family:inherit;font-size:13px;font-weight:500;gap:5px;height:32px;padding:0 13px;transition:background .12s,transform .1s;white-space:nowrap}.btn:active{transform:scale(.96)}.btn-neutral{background:#f4f4f5;background:var(--bg);border-color:#e4e4e7;border-color:var(--border);color:#18181b;color:var(--text-primary)}.btn-neutral:hover{background:#ebebed}.btn-split-off{background:#f4f4f5;background:var(--bg);border-color:#e4e4e7;border-color:var(--border);color:#71717a;color:var(--text-secondary)}.btn-split-off:hover{background:#ebebed}.btn-split-on{background:#fef2f2;background:var(--split-bg);border-color:#fca5a5;border-color:var(--split-border);color:#ef4444;color:var(--split-color)}.btn-split-on:hover{background:#fee2e2;background:var(--split-bg-hover)}.btn-split-doc{background:#faf5ff;background:var(--doc-bg);border-color:#d8b4fe;border-color:var(--doc-border);color:#a855f7;color:var(--doc-color)}.btn-split-doc:hover{background:#f3e8ff;background:var(--doc-bg-hover)}.btn-primary{background:#6366f1;background:var(--accent);border-color:#0000;color:#fff;margin-left:8px;padding:0 18px}.btn-primary:hover{background:#4f46e5;background:var(--accent-hover)}.upload-screen{align-items:center;display:flex;justify-content:center;min-height:calc(100vh - 56px);min-height:calc(100vh - var(--toolbar-h));padding:2rem}.upload-card{background:#fff;background:var(--surface);border:2px dashed #e4e4e7;border:2px dashed var(--border);border-radius:16px;max-width:420px;padding:52px 48px;text-align:center;transition:border-color .2s,box-shadow .2s;width:100%}.upload-card:hover{border-color:#6366f1;border-color:var(--accent);box-shadow:0 0 0 4px #eef2ff;box-shadow:0 0 0 4px var(--accent-subtle)}.upload-icon{font-size:44px;line-height:1;margin-bottom:14px}.upload-card h2{color:#18181b;color:var(--text-primary);font-size:20px;font-weight:600;margin:0 0 8px}.upload-card p{color:#71717a;color:var(--text-secondary);font-size:14px;line-height:1.5;margin:0 0 28px}.upload-label{align-items:center;background:#6366f1;background:var(--accent);border-radius:5px;border-radius:var(--radius-sm);color:#fff;cursor:pointer;display:inline-flex;font-family:inherit;font-size:14px;font-weight:500;gap:8px;padding:10px 24px;transition:background .12s}.upload-label:hover{background:#4f46e5;background:var(--accent-hover)}.upload-label input{clip:rect(0 0 0 0);height:1px;opacity:0;overflow:hidden;position:absolute;width:1px}.grid{grid-gap:2rem 3rem;align-items:start;display:grid;gap:2rem 3rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));padding:2rem 2.5rem}@media (min-width:1400px){.grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}}@media (min-width:1800px){.grid{grid-template-columns:repeat(6,1fr)}}.page-wrapper{position:relative}.page-card{background:#fff;background:var(--surface);border-radius:8px;border-radius:var(--radius);box-shadow:0 4px 24px #0000001a,0 1px 4px #0000000f;box-shadow:var(--shadow-page);overflow:hidden}.page-overlay{cursor:crosshair;display:block;position:relative;-webkit-user-select:none;user-select:none}.page-overlay img{display:block;width:100%}.page-number-badge{background:#00000073;border-radius:99px;bottom:7px;color:#fff;font-size:11px;font-weight:500;left:7px;letter-spacing:.01em;padding:2px 8px;pointer-events:none;position:absolute;z-index:5}.page-placeholder{animation:shimmer 1.6s ease-in-out infinite;aspect-ratio:8.5/11;background:linear-gradient(90deg,#f0f0f0 25%,#e8e8e8 50%,#f0f0f0 75%);background-size:200% 100%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.split-line{background:#ef4444;background:var(--split-color);height:2px;left:0;pointer-events:none;position:absolute;right:0;z-index:10}.split-line.document-split{background:#a855f7;background:var(--doc-color)}.scissors{align-items:center;background:#fff;background:var(--surface);border:1px solid #e4e4e7;border:1px solid var(--border);border-radius:50%;box-shadow:0 1px 2px #0000000f,0 1px 3px #0000000a;box-shadow:var(--shadow-sm);cursor:pointer;display:flex;font-size:15px;height:32px;justify-content:center;line-height:1;padding:0;position:absolute;right:-40px;top:8px;transition:transform .12s,background .12s,border-color .12s;width:32px;z-index:20}.scissors:hover{box-shadow:0 4px 6px #0000000f,0 2px 4px #0000000a;box-shadow:var(--shadow-md);transform:scale(1.12)}.scissors.active{background:#fef2f2;background:var(--split-bg);border-color:#fca5a5;border-color:var(--split-border)}.scissors.document-split{background:#faf5ff;background:var(--doc-bg);border-color:#d8b4fe;border-color:var(--doc-border)}.status-screen{align-items:center;color:#71717a;color:var(--text-secondary);display:flex;flex-direction:column;font-size:14px;gap:14px;justify-content:center;min-height:calc(100vh - 56px);min-height:calc(100vh - var(--toolbar-h))}.spinner{animation:spin .65s linear infinite;border:3px solid #e4e4e7;border-top-color:#6366f1;border:3px solid var(--border);border-radius:50%;border-top-color:var(--accent);flex-shrink:0;height:32px;width:32px}@keyframes spin{to{transform:rotate(1turn)}}.status-screen.error{color:#ef4444;color:var(--split-color)}.status-screen.error .spinner{border-top-color:#ef4444;border-top-color:var(--split-color)}
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