It's Martin here. I think if you look at margin sequentially, as I mentioned before, the main driver of margin improvement was the improvement that we saw on the portfolio of consumer credits in Brazil. And in addition to that, we've seen some scale -- very strong scale in terms of growth in Brazil that enabled us to dilute fixed cost. As you've probably seen over the past several years, we have been diluting OpEx very nicely. And in this particular quarter, we diluted OpEx by 2.5 points quarter-on-quarter. So that's also contributing to. And we elected to reinvest that margin into other areas of the business, as I explained before. And I think the philosophy continues to be the same. I mean we -- we'll have some areas of the business that are delivering very strong profits and are growing very fast. If you look at our credit portfolio growing at 75% year-on-year, our advertising business growing 70-plus percent year-on-year, the acquiring business as well, we are continuing to deliver scale because of the growth that we are delivering consistently. So we are electing to reinvest in areas of the business, as we discussed before, lowering the free shipping threshold, 1P, CBT and so on. So that philosophy will continue to be the same going forward. We invest in a very disciplined manner. We have engagement and growth targets for each initiative that we take on. And more important than that, we have a clear path to profitability to those initiatives and we measure against those, and we lever and we graduate the intensity of investments based on those results. So that's the first part of your question. Then you asked about AI. We are very excited about AI. I mean, obviously, we are investing more than a year ago. I think we invested about $80 million on AI this quarter compared to a year ago, but we are seeing very strong results. I mean if you look at it -- I mean, let me break it down in a couple of ways. Consumer-facing, we have several initiatives that are paying out very nicely. I mean we talked about the Mercado Pago AI agent, the Seller Assistant on MercadoLibre, those continue to scale very nicely. In this quarter, we disclosed in the letter, the ad orchestrator that is increasing the engagement with our users grew by 66% the usage of that tool. That is a way to get more sellers to our advertising platform and is helping us to grow the advertising business by 73% year-on-year. We -- I think Ari mentioned, the AI tools that we deploy on our search engine in the 5 largest countries. And it's important to mention that -- of course, that increased the price, the cost because we had to pay LLMs now. But when you put together the incremental volume that we sold plus the incremental conversion and advertising, it more than pays the cost of that initiative. So it's an initiative that has a positive return on that investment. So that's a good example of AI contributing to profits. Then on the productivity side, I think in the past, we talked about customer service. As an example, 4 years ago, we used to have 10,000 reps on customer service. Today, we have 7,000 reps, even though the business grew by 3x during that period of time. And that's because 90% of the interactions are done without a human participating on the issue. In product development, obviously, that's tremendous productivity gains. We have 20,000 developers that are using AI. A year ago, they were coding -- they were helped by AI. Today, human written code is the exception. All of the code, the majority of the code is done by AI. And you can see that also flowing through our P&L. Product development scale from 8.4% of revenues to 7.2% of revenues year-on-year, even though it has this incremental cost of AI within it. So we are very, very optimistic about it. We are seeing the results. We manage it with discipline. We are focusing on costs as well. Cost per token continues to come down, but we're seeing very positive results in terms of investments on AI and MercadoLibre.