flowchart TD
n1["❶ 施工前準備\n停留檢查點1"]
n2["❷ 樁位位置確認\n停留檢查點2"]
n3["❸ 型鋼打設作業"]
n4["❹ 圍囹托架安裝\n停留檢查點3"]
n5["❺斜支撐架設\n停留檢查點4"]
n1 --> n2 --> n3 --> n4 --> n5
classDef pending fill:#e0e0e0,stroke:#9e9e9e,color:#555,rx:8
classDef inprogress fill:#1976d2,stroke:#1565c0,color:#fff,rx:8
classDef passed fill:#388e3c,stroke:#2e7d32,color:#fff,rx:8
classDef defect fill:#d32f2f,stroke:#b71c1c,color:#fff,rx:8
class n1,n2,n3,n4,n5 pending