系統架構

graph TD
    subgraph L1["第一層：核心交易層"]
        D["模組 D
CRM"]
        B["模組 B
報名與候補"]
        A["模組 A
課程與開班"]
        C["模組 C
財務管理"]
    end

    subgraph L2["第二層：支援營運層"]
        G["模組 G
資源管理"]
        E["模組 E
教務管理"]
        F["模組 F
通知管理"]
        H["模組 H
業務與經銷商"]
        J["模組 J
系統管理"]
    end

    subgraph L3["第三層：對外介面層"]
        I["模組 I
學員自助入口"]
        K["模組 K
外部整合"]
    end

    B --> D
    B --> A
    B --> C
    A --> G
    E --> A
    E --> B
    H --> D
    H --> A
    H --> B
    I --> A
    I --> B
    I --> E
    I --> C
    K --> A
    K --> G
    K --> J
    A --> F
    B --> F
    C --> F
    E --> F
    G --> F
    H --> F

    style D fill:#DBEAFE,stroke:#2563EB
    style B fill:#DBEAFE,stroke:#2563EB
    style A fill:#DBEAFE,stroke:#2563EB
    style C fill:#DBEAFE,stroke:#2563EB
    style G fill:#DCFCE7,stroke:#16A34A
    style E fill:#DCFCE7,stroke:#16A34A
    style F fill:#DCFCE7,stroke:#16A34A
    style H fill:#DCFCE7,stroke:#16A34A
    style J fill:#DCFCE7,stroke:#16A34A
    style I fill:#FFF7ED,stroke:#EA580C
    style K fill:#FFF7ED,stroke:#EA580C