(() => { const root = document.documentElement; const body = document.body; const getParts = (date = new Date()) => { const parts = new Intl.DateTimeFormat('en-CA', { timeZone: 'Asia/Tokyo', year: 'numeric', month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit', hourCycle: 'h23', }).formatToParts(date).reduce((acc, part) => { if (part.type !== 'literal') acc[part.type] = part.value; return acc; }, {}); return { dateKey: `${parts.year}-${parts.month}-${parts.day}`, hour: Number(parts.hour), minute: Number(parts.minute), }; }; const resolveTheme = (hour) => { if (hour >= 5 && hour < 9) return 'early-morning'; if (hour >= 9 && hour < 17) return 'day'; if (hour >= 17 && hour < 19) return 'evening'; if (hour >= 19) return 'night'; return 'late-night'; }; const setSleepWarningPersistence = (dateKey) => { try { localStorage.setItem('yukimi-sleep-warning-active', JSON.stringify({ dateKey, untilMinute: 150 })); } catch { return; } }; const getPersistedSleepWarning = (dateKey, hour, minute) => { try { const stored = localStorage.getItem('yukimi-sleep-warning-active'); if (!stored) return false; const parsed = JSON.parse(stored); const nowMinute = hour * 60 + minute; if (parsed.dateKey === dateKey && typeof parsed.untilMinute === 'number' && nowMinute <= parsed.untilMinute) return true; localStorage.removeItem('yukimi-sleep-warning-active'); return false; } catch { return false; } }; const stored = (dateKey, eventName, probability) => { const key = `yukimi-event:${dateKey}:${eventName}`; try { const value = localStorage.getItem(key); if (value === 'active' || value === 'inactive') return value === 'active'; const active = Math.random() < probability; localStorage.setItem(key, active ? 'active' : 'inactive'); return active; } catch { return Math.random() < probability; } }; const resolveEvent = (parts) => { if (getPersistedSleepWarning(parts.dateKey, parts.hour, parts.minute)) return 'sleep-warning'; if (parts.hour === 2 && parts.minute <= 30 && Math.random() < 0.01) { setSleepWarningPersistence(parts.dateKey); return 'sleep-warning'; } if (parts.hour === 15 && parts.minute <= 30 && stored(parts.dateKey, 'snack', 0.01)) return 'snack'; if (parts.hour === 12 && parts.minute <= 30 && stored(parts.dateKey, 'lunch', 0.01)) return 'lunch'; if (parts.hour >= 0 && parts.hour < 2 && stored(parts.dateKey, 'late-night-away', 0.005)) return 'late-night-away'; if (parts.hour >= 0 && parts.hour < 5) return 'none'; if (stored(parts.dateKey, 'away', 0.005)) return stored(parts.dateKey, 'busy', 0.2) ? 'busy' : 'away'; return 'none'; }; const parts = getParts(); const theme = resolveTheme(parts.hour); const eventName = resolveEvent(parts); root.dataset.theme = theme; root.dataset.event = eventName; if (body) { body.dataset.theme = theme; body.dataset.event = eventName; } })();

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