MINNEAPOLIS — That 20-0 halftime deficit under the Metrodome might’ve stifled many of their predecessors, but these Detroit Lions weren’t deterred. Each week, it seems, they’re stopping some kind of long losing trend.

That 20-point halftime lead held by the Vikings? It still wasn’t big enough for a team making a troubling habit of second-half stumbles.

Matthew Stafford threw two touchdown passes in the second half to Calvin Johnson to rally Detroit, and Jason Hanson’s fourth field goal of the game gave the Lions a 26-23 overtime victory over the Vikings on Sunday.

The Lions (3-0) have the league’s longest active winning streak at seven straight games, including the final four contests of last season. Heck, they even won all four of their preseason games.

Yes, the Lions, who hadn’t won in Minnesota since 1997.

“This is what I expect from this team,” defensive tackle Ndamukong Suh said.

Yes, the Lions, who haven’t started a season with three straight wins since 1980.

“It goes to show we’re not going to lay down. We saw in their first two games they got relaxed after they had a big lead. We felt if we started to put some points up we could get in their head if we continued to make plays,” said Johnson, whose Willie Mays-style over-the-shoulder 40-yard sideline catch with Cedric Griffin in tight coverage set up Hanson’s winner less than two minutes into extra time.

The Vikings (0-3) insisted they didn’t relax.

They took extra steps to avoid just that and emerge from the intermission with the same edge, having squandered a 17-7 lead at San Diego in a 24-17 loss and blown a 17-0 advantage to Tampa Bay in a 24-20 defeat.

“We were positive that we could get it. We worked on it in practice. They didn’t do anything that we didn’t expect,” Frazier said.

The Vikings were too consumed — and confused — by their own collapse to recognize the significance of this win for the Lions.