flowchart LR
    A["Large-scale projects are<br/>hard to plan holistically<br/>(uncertain scope & schedule)"] --"Feature-list-based<br/>staged approach"--> B["Iterative development<br/>by Feature, within 2 weeks"] --"Progress visibility<br/>& quality management"--> C["Predictable<br/>large-scale software development"]

    style A fill:#FFEBEE,stroke:#D32F2F,color:#000
    style B fill:#E3F2FD,stroke:#1976D2,color:#000
    style C fill:#E8F5E9,stroke:#388E3C,color:#000
  

    flowchart LR
    S1["1. Develop Overall Model"]
    S2["2. Build Feature List"]
    S3["3. Plan by Feature"]
    S4["4. Design by Feature"]
    S5["5. Build by Feature"]

    S1 --> S2 --> S3
    S3 --> S4 --> S5
    S5 -->|"Repeat"| S4

    style S1 fill:#E3F2FD,stroke:#1976D2,color:#000
    style S2 fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style S3 fill:#FFF3E0,stroke:#F57C00,color:#000
    style S4 fill:#FFEBEE,stroke:#D32F2F,color:#000
    style S5 fill:#E8F5E9,stroke:#388E3C,color:#000
  

    flowchart TD
    subgraph R1["　"]
        direction LR
        F1["Feature hierarchy<br/>Subject Area<br/>→ Business Activity<br/>→ Feature Set<br/>→ Feature"]
        F2["Feature expression format<br/>verb + result + object<br/>e.g., Look up a customer's<br/>order history"]
    end
    subgraph R2["　"]
        direction LR
        F3["Iteration cycle<br/>Design by Feature<br/>Build by Feature<br/>repeats in units of up to 2 weeks"]
        F4["Progress measurement<br/>based on number of<br/>completed Features<br/>tracked weekly, burndown chart"]
    end

    style F1 fill:#E3F2FD,stroke:#1976D2,color:#000
    style F2 fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style F3 fill:#FFF3E0,stroke:#F57C00,color:#000
    style F4 fill:#E8F5E9,stroke:#388E3C,color:#000
    style R1 fill:none,stroke:none
    style R2 fill:none,stroke:none