flowchart LR
    A["Disconnected internet services —<br/>2D-screen-based,<br/>consumption-only content"] --"Immersive technology —<br/>XR, AI, blockchain"--> B["A persistent 3D virtual space —<br/>avatar-based interaction,<br/>real economic activity"] --"Fused with industry,<br/>education, and society at large"--> C["A new digital civilization<br/>built on the metaverse"]

    style A fill:#E3F2FD,stroke:#1976D2,color:#000
    style B fill:#1E3A5F,stroke:#1E3A5F,color:#fff
    style C fill:#E8F5E9,stroke:#388E3C,color:#000
  

    flowchart TD
    subgraph R1["　"]
        direction LR
        T1["XR interface<br/>VR/AR/MR/holograms —<br/>immersive I/O devices —<br/>HMDs, smart glasses"]
        T2["Avatar/digital identity<br/>3D avatar representation —<br/>DID-based identity,<br/>reproducing behavior/emotion"]
        T3["Spatial computing<br/>3D spatial recognition/mapping,<br/>physics simulation,<br/>spatial audio/haptics"]
    end
    subgraph R2["　"]
        direction LR
        T4["Digital economy<br/>NFT/blockchain —<br/>virtual real estate/goods,<br/>P2E, creator revenue"]
        T5["Connectivity infrastructure<br/>5G/6G, edge computing —<br/>low latency, high bandwidth,<br/>real-time rendering"]
        T6["AI/generative content<br/>intelligent NPCs,<br/>generative AI content,<br/>personalized environments"]
    end

    style T1 fill:#E3F2FD,stroke:#1976D2,color:#000
    style T2 fill:#F3E5F5,stroke:#7B1FA2,color:#000
    style T3 fill:#FFF3E0,stroke:#F57C00,color:#000
    style T4 fill:#FFEBEE,stroke:#D32F2F,color:#000
    style T5 fill:#E8F5E9,stroke:#388E3C,color:#000
    style T6 fill:#E0F2F1,stroke:#00796B,color:#000
    style R1 fill:none,stroke:none
    style R2 fill:none,stroke:none
  

    flowchart LR
    subgraph IND["Metaverse Applications by Industry"]
        direction TB
        I1["Manufacturing/industry<br/>digital-twin factories,<br/>AR work guides,<br/>remote maintenance"]
        I2["Education/training<br/>immersive simulation,<br/>virtual practice environments,<br/>collaborative learning spaces"]
        I3["Healthcare<br/>surgical simulation,<br/>VR rehabilitation therapy,<br/>remote-care avatars"]
        I4["Real estate/construction<br/>virtual space tours,<br/>3D BIM visualization,<br/>architectural simulation"]
    end

    style IND fill:#E3F2FD,stroke:#1976D2,color:#1E3A5F