*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:#333;background:#f5f5f5}.container{max-width:1200px;margin:0 auto;padding:20px}button{padding:10px 20px;background:#0070f3;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:14px}button:hover{background:#0051cc}button:disabled{background:#ccc;cursor:not-allowed}input[type=email],input[type=password],input[type=text],textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:5px;font-size:14px}.card{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 8px rgba(0,0,0,.1);margin-bottom:20px}.error{color:#e00;margin:10px 0}.success{color:#0a0;margin:10px 0}