Your employer brand isn't only the careers page and the values printed on the wall. It's the room people walk into on a Tuesday morning. The temperature, the noise, the light, the coffee, the small stuff nobody writes down. People form a view of you as an employer from all of it, whether you planned it that way or not.
For years the office was treated as plumbing. Somewhere to sit. A cost per square foot. An operational detail to keep ticking over. That's changed. Now that coming in is a choice as much as an instruction, the office has become something people judge you on. It's part of your reputation, and it's on show every day.