Zeq Vault is a revolutionary password manager that replaces passwords with mathematical equations. Your master equation (e.g., x^3 + sin(y*pi) - 42.7) is evaluated at x=1.287, y=0.777 and used as the seed for PBKDF2 → AES-256-GCM encryption. The vault stores an equation for each service — when you need a password, you use the equation result. Everything is encrypted client-side; no server ever sees your entries. Features: random equation generator, strength indicator, auto-lock, export/import encrypted backups.