Cusco is known for tourism. But the city’s biggest football team is chasing a repeat of a South American title that caused shockwaves more than 20 years ago It was one of those nights when Cusco shifted the spotlight from its tourism engine to football. At a stadium named after Garcilaso de la Vega – celebrated for his chronicles about the Inca empire – around 30,000 people gathered to witness something far more immediate than nearby Machu Picchu, arguably the best-known archaeological site in…