The World Cup host also got help from the referee in tonight’s 3-1 win against Croatia in the opening game of soccer’s biggest event. After spending $11 billion on troubled stadiums and other infrastructure, Brazil’s games got under way, although not as the nation planned. Croatia took the lead with a Marcelo own-goal after 11 minutes that stunned the majority of the 62,103 fans in the Sao Paulo arena into silence. Then Neymar, who Spanish team Barcelona invested more than $100 million in last season, scored twice. His left-foot shot bounced into the corner to draw Brazil even, and then he converted a penalty with 20 minutes to go following a call by Japanese referee Yuichi Nishimura that left Croatian players angered. Oscar completed the scoring in the 91st minute. “I’m very happy, I think even happier than I dreamed of,” said Neymar, who was named man of the match. In front of a crowd that included Brazilian President Dilma Rousseff, who was subjected to abusive chants several times, Brazil started poorly in a stadium that had come to symbolize the problems with the country’s preparation. Workmen were still putting finishing touches on the facility even as fans started to…