Two improvements for using the roadmap on a phone or tablet.

A header that fits a small screen. The top bar currently crowds the navigation, search and login together on narrow screens. It collapses behind a menu button instead.

Roadmap columns that fold to their header. Any column on the roadmap can be folded away and opened again with a tap, and each status carries a default folded/open state per device class — PC, tablet and phone, set per status. A long column such as Planned can start folded on a phone while staying open on a desktop, so it no longer buries everything below it. Whatever the default, you can still open or close any column yourself while browsing.