W2
...
classDef pre fill:#38250d,stroke:#fbbf24,stroke-width:2px,color:#fde68a
classDef w1 fill:#0d2922,stroke:#34d399,stroke-width:2px,color:#6ee7b7
classDef w2 fill:#0c243a,stroke:#38bdf8,stroke-width:2px,color:#bae6fd
classDef gate fill:#1a202c,stroke:#94a3b8,stroke-width:2px,stroke-dasharray:5 5,color:#94a3b8