Personalized Digital Training for COGnitive FITness in Mild Cognitive Impairment

Inclusion Criteria: * Diagnosis of Mild Cognitive Impairment (MCI) based on Petersen (1999) and Winblad (2004), or Subjective Cognitive Decline (SCD) according to Jessen (2014) * Mini-Mental State Examination (MMSE) \> 18 and Clinical Dementia Rating (CDR) ≤ 1 * Age ≥ 50 years * Formal education \> 3 years * Signed informed consent * Stable neurotropic pharmacological therapy in the past 3 months (if applicable) * Preserved mental capacity (i.e., not under legal guardianship or protective supervision) * Preserved ability to understand and produce written and spoken Italian Exclusion Criteria: * Severe sensory or communication impairments * Recent participation (\< 3 months) in cognitive or rehabilitation programs * Failure to provide or withdrawal of informed consent * History or evidence of central nervous system disorders that may affect cognition and are unrelated to the study (e.g., major stroke, brain tumors, normal pressure hydrocephalus, traumatic brain injury) * History or evidence of major psychiatric disorders * Presence of medical conditions that may interfere with cognitive function (e.g., renal or hepatic failure, obstructive sleep apnea, hypothyroidism, vitamin B12 deficiency)