This challenge includes a variety of advanced patterns deliberately designed to trick naive regex approaches. It combines many different types of data—some valid, some invalid—to force negative/positive lookarounds, complex alternations, and specialized pattern checks. We use unique email formats (plus signs, punctuation, punycode subdomains), tricky phone numbers, multiple date/time formats, partial/incomplete patterns, currency in negative forms or with parentheses, obfuscated credit card form... (truncated)