fggHONG KONG (AP) — Hong Kong’s embattled leader refused demands by pro-democracy protesters to resign Thursday, and instead offered talks to defuse a week of massive demonstrations that have grown into the biggest challenge to Beijing’s authority since China took control of the former British colony in 1997. The Hong Kong Federation of Students said in a statement early Friday that they planned to join the talks with the government, focused specifically on political reforms. They reiterated that Chief Executive Leung Chun-ying step down, saying he “had lost his integrity.” A wider pro-democracy group that had joined the demonstrations, Occupy Central, welcomed the talks and also insisted that Leung quit. Occupy Central “hopes the talks can provide a turning point in the current political stalemate,” it said in a statement. “However, we reiterate our view that Chief Executive Leung Chun-ying is the one responsible for the stalemate, and that he must step down.” More