:root{--teal-50: #f0fdfa;--teal-100: #ccfbf1;--teal-400: #2dd4bf;--teal-600: #0d9488;--teal-700: #0f766e;--teal-800: #115e59;--whatsapp: #25d366;--gray-50: #f9fafb;--gray-200: #e5e7eb;--gray-500: #6b7280;--gray-700: #374151;--gray-900: #111827;--red-50: #fef2f2;--red-200: #fecaca;--red-700: #b91c1c;--shadow: 0 8px 24px rgba(15, 118, 110, .12)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--gray-50);color:var(--gray-900);line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:#fff;border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:10}.brand{border:none;background:none;cursor:pointer;padding:0}.brand 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