Analyzes systolic and diastolic blood pressure readings to determine the hypertension stage based on the latest medical guidelines. This tool allows users to input their readings, view their risk category (Normal, Elevated, High Blood Pressure Stage 1, Stage 2, or Hypertensive Crisis), and receive clear explanations for each stage. It also features a history log to track readings over time, complete with timestamps and risk levels, all stored securely in the user's browser.