:root{color:#1f2937;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--text:#111827;--text-muted:#6b7280;--border:#d5d8de;--surface:#fff;--surface-alt:#f7f8fa;--shadow-soft:0 2px 8px #0f172a0f;--shadow-card:0 1px 4px #0f172a0d;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--motion-fast:.12s ease;--motion-base:.18s ease;--motion-slow:.26s ease;background:#f5f6f8;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;font-weight:400;line-height:1.4}*{box-sizing:border-box}html,body,#root{min-width:320px;min-height:100%;margin:0}body{background:#f5f6f8;min-height:100vh;font-size:14px}button,input,textarea,select{font:inherit}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:1ms!important;animation-duration:1ms!important;animation-iteration-count:1!important}}.upload-shell,.app-shell{min-height:100vh}.upload-shell{place-items:center;padding:48px 16px 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