/**
 * KeystoneSnowy - skin (per theme; NOT shared with KeystoneMetallic / KeystoneFlat)
 *
 * Loaded after the shared theme.css, before custom.css. Holds only what tokens.css cannot
 * express. Snowy Yet Warm needs nothing beyond its tokens: Libre Baskerville 400, 4px corners,
 * a raspberry hero with snow-blue doorways and a navy footer.
 */