graph LR
    A["用户请求"] --> B{"判断任务复杂度"}
    B -->|"简单查询"| C["none<br/>⚡ 极速 · 极省"]
    B -->|"日常问答"| D["low<br/>💬 轻推理"]
    B -->|"通用任务"| E["medium<br/>⚖️ 平衡"]
    B -->|"复杂分析"| F["high<br/>🔬 深度思考"]
    B -->|"科研/金融"| G["xhigh<br/>🧠 极限推理"]

    style C fill:#4caf50,stroke:#fff,color:#fff
    style D fill:#8bc34a,stroke:#fff,color:#fff
    style E fill:#ff9800,stroke:#fff,color:#fff
    style F fill:#f44336,stroke:#fff,color:#fff
    style G fill:#9c27b0,stroke:#fff,color:#fff
