*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:#333;background:#f8f9fa;height:100%;margin:0;padding:0;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (max-width: 768px){body,input,select,textarea{font-size:16px}}.container{max-width:500px;margin:0 auto;padding:20px}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.pulse{animation:pulse 2s infinite}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.p-1{padding:.5rem}.p-2{padding:1rem}.p-3{padding:1.5rem}.p-4{padding:2rem}button:focus,input:focus,select:focus{outline:2px solid #667eea;outline-offset:2px}::selection{background:#667eea;color:#fff}::-moz-selection{background:#667eea;color:#fff}