LocalizedPageShell at app/_components/localized-page-shell.tsx:34
already renders <main className='flex-1'>{children}</main> as the
page landmark. The manifesto/page.tsx shell was wrapping that with
its own <main>, producing nested main landmarks (axe-core:
landmark-no-duplicate-main + landmark-main-is-top-level).
Switch outer wrapper to <div>; keep styling (bg-background,
text-foreground, min-h-screen, overflow-x-hidden) intact. The
inner <main> from the shell remains the canonical landmark.
Pre-existing on origin/dev (the pre-decomposition manifesto/page.tsx
also had a top-level <main>), surfaced by PR #4202 hands-on QA
via axe-core run on /ko/manifesto.
YeonGyu-Kim