For a two-qubit pure state |ψ⟩ = α|00⟩ + β|01⟩ + γ|10⟩ + δ|11⟩, the concurrence C = 2|αδ − βγ| measures entanglement (C=0: separable, C=1: maximally entangled Bell state). This visualization explores the full space of two-qubit states, their Bloch sphere representations, and entanglement dynamics under Hamiltonians.