Give the header its own 1320px container while preserving body/article widths, move the complete navigation below the controls on smaller screens, and refresh the dated public contributor snapshot from 214 to 216 accounts. Validated shared HTML/translations/links/assets and 16 maintenance tests; local Chromium acceptance covered 20 languages, 15 viewport widths and both root/project paths. CI and Greptile review passed. Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com> Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com> Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>