GLENDALE, Ariz. — Kyle Shanahan’s proud words got drowned out postgame by the joyous music blaring from the victorious 49ers’ locker room.

It was Eddy Grant’s 1982 hit “Electric Avenue.” It makes for a great go-to song in karaoke, and it works as a metaphor for Sunday’s 41-22 rout of the Cardinals.

The 49ers’ full-staff offense was electric. It was loud on the scoreboard. And it was rocking in the daytime.

If this team is going to rock down to … a Lombardi Trophy dash, they’ll have to constantly take their offense higher to offset their patchwork defense’s liabilities.

The 49ers (7-4) also need to string together back-to-back wins for the first time since their 3-0 start, and they’ll try doing that Monday night when they host the upstart Carolina Panthers (6-5).

A 4-1 record in NFC West action and 7-2 in NFC games should help their playoff fate. Only one NFC team has more wins: the rival Rams (8-2) down in L.A. and atop the West.

“We know November is when teams start to come alive,” safety Malik Mustapha said. “We didn’t kick it off the way we wanted to (in last Sunday’s loss to the Rams). We have all the tools and all the players that we need to make something special out of this season.”

Advice: Just get to the dance, regardless of the seeding’s beauty. Look, the Rams can get hurt in the next two months, the Eagles are nuts, and the rest of the NFC is a weekly carnival.

Here are some things that caught my eye (and ears) in this year’s visit to State Farm Stadium, where it’s always a privilege to pay tribute to the Pat Tillman Memorial:

1. BROCK’S BIG TOE

Brock Purdy put on his blue jeans, pulled a white sock over his ever-circumspect right big toe, slipped into his cowboy boots then got on with his life as the 49ers’ superstar quarterback as if everything is back to normal, after a six-game hiatus to heal that toe.

“It feels great now, and on to the next one,” Purdy said after his 200-yard, three-touchdown return about an hour west of his Queen Creek hometown.

He got sacked once, and his only official carry was a 7-yard loss he took after aborting a backfield pitch to a wrong-way-running Brian Robinson.

“No, I didn’t even think about (the toe), honestly, in the game or anything,” said Purdy, noting he tested his toe out enough at practice the past few weeks. “… I felt great. Throughout the game, I was able to do everything: scramble, keepers, rollouts, step up in the pocket. I played quarterback.”

2. QB CONTROVERSY? HAHA

Christian McCaffrey called it “vintage Brock,” as best reflected by the 3-to-0 touchdown-to-interception ratio. “To miss games like that is really hard,” McCaffrey said. “To come back in the middle of a year, I think people just watch and are like, ‘Oh, he had a good game, whatever.’ But to be out that long and to come in and do what he did today is extremely impressive.”

3. FIRST POINTS, EVENTUALLY

This same stadium is where the 49ers last opened a game with a kickoff return for a touchdown, by Alan Rossum on a 104-yard effort in a 2008 loss to the Cardinals. Skyy Moore went 98 yards, 1 yard short of scoring the 49ers’ first touchdown, and he left that task for McCaffrey on the offense’s first snap.

Said Williams: “That’s a first for me out of 15 years (in the NFL). Skyy jumped us off, man. He’s a difference maker.”

Moore had a schemed-up lane compliments of blocks from Jake Tonges and Luke Gifford, though special teams coordinator Brant Boyer said: “They all did a hell of a job blocking that up.”

Moore’s view of the 49ers’ longest kick return since Ted Ginn’s 102-yard score in 2011: “We schemed them up and got it right. It came down to who was faster and I feel I ran out of gas. Next time I’m going to get one less scoop of ice cream on Saturday and we’ll get that to the crib.”

4. INJURY ALERTS

The 49ers headed home with two significant injury concerns: linebacker Tatum Bethune (right ankle) and kicker Eddy Pineiro (right hamstring).

Pineiro sustained a Grade 1 right hamstring strain and will miss an undetermined amount of time, the team announced Monday. The 49ers will hold tryouts for kickers Tuesday and/or Wednesday.

Pineiro’s three field goals Sunday made him 22-for-22 this season. But he also had a PAT blocked for a second straight game, then missed a PAT, then made two.

The 49ers will sign a possible fill-in this week; don’t dare mention Jake Moody 2.0 off the Bears’ practice squad.

Bethune was done atter 24 snaps with a high ankle sprain and although he probably isn’t headed for injured reserve, veteran Curtis Robinson will assume the role that first belonged to Fred Warner and then Bethune.

Bethune was diagnosed with a high ankle sprain. He’ll miss some time. He’ll be replaced by Curtis Robinson.

5. McCATCH TOPS HAT TRICK

Sure, take McCaffrey’s three touchdowns for granted. He does that kind of stuff. The one play that drew a lot of talk postgame wasn’t a score but rather the 15-yard route-and-catch he jumped to snatch against a cornerback, on third-and-15 to set up his and the 49ers’ final touchdown.

McCaffrey said they practiced that play twice last week, adding: “The look we had in practice wasn’t man (coverage) vs. their corner. But Brock made a throw that gave me a chance to make a play.”