Southeast Asian technology firm Sea Ltd on Tuesday reported a 30 per cent surge in first-quarter revenue, helped by steady growth across its diverse set of businesses, sending its U.S.-listed shares up 5 per cent in early trading. Purchases on Sea's e-commerce platform, Shopee — available across various Southeast Asian countries and Taiwan — jumped ahead of the summer holiday and travel season. The platform, which is a market leader in Indonesia, has attracted a large user base and become a