graph TD subgraph INST["Institutional Layer"] GP["Grading Policy"]:::institutional AM["Accessibility Mandate"]:::institutional PR["Privacy Regulation"]:::institutional CS["Curricular Scope"]:::institutional subgraph SOC["Social Layer"] TM["Talk-Move Repertoire"]:::social TT["Turn-Taking Norms"]:::social ER["Error-Response Scripts"]:::social FM["Forum Moderation"]:::social subgraph PHYS["Physical / Digital Layer"] SE["Seating"]:::physical LI["Lighting"]:::physical SR["Screen Readability"]:::physical KN["Keyboard Navigation"]:::physical MR["MicroSim Responsiveness"]:::physical end end end PHYS -.->|"shapes"| SOC SOC -.->|"constrained by"| INST INST -.->|"cascades into"| SOC SOC -.->|"cascades into"| PHYS classDef physical fill:#4A90D9,stroke:#2C5F8A,color:#fff classDef social fill:#3A9B8F,stroke:#2A7B6F,color:#fff classDef institutional fill:#D4A76A,stroke:#A67D3D,color:#fff