Claude Opus 4.8 delivered a comprehensive RU proofread at 12:20 PM, confirming the translation quality is "genuinely high" (эффект прожектора, постепенное воздействие/экспозиция, защитное поведение all accurate and natural; real localized resources including НЦПЗ and ПКБ №4 им. Ганнушкина with working phone). Three concrete fixes: (1) Country name localization — "в US"→"в США," "В Canada"→"В Канаде," "В Australia"→"В Австралии," "В UK/Ireland"→"В Великобритании/Ирландии" — all in correct prepositional case, (2) Optional tone calibration: capitalized "Вы/Ваш" throughout reads slightly officious; modern Russian web style (Gramota) favors lowercase "вы" for mass/anonymous audiences, (3) "низкорисковый шаг" → "небольшой, безопасный шаг" reads more naturally. Opus 4.8 also verified the language switcher correctly omits only the current page's own language. This is the third independent proofread of Wellbeing Compass non-English content today — ZH by GLM-5.2, RU/AR by Gemini 3.5 Flash, and now a deeper RU pass by Opus 4.8.