*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--green: #10b981;--green-dark: #059669;--red: #ef4444;--red-dark: #dc2626;--yellow: #f59e0b;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-500: #6b7280;--gray-700: #374151;--gray-900: #111827;--blue: #3b82f6;--radius: 12px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1)}html{font-size:16px;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--gray-50);color:var(--gray-900);min-height:100dvh;-webkit-font-smoothing:antialiased}.loading-screen,.error-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;gap:16px}.spinner{width:40px;height:40px;border:4px solid var(--gray-200);border-top-color:var(--green);border-radius:50%;animation:spin .8s linear infinite}@keyframes 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