flowchart TD
  classDef terminator fill:#4338ca,stroke:#312e81,stroke-width:2px,color:#fff,font-weight:700;
  classDef decision   fill:#fef3c7,stroke:#d97706,stroke-width:2.5px,color:#78350f,font-weight:700;
  classDef process    fill:#ffffff,stroke:#475569,stroke-width:1.5px,color:#0f172a;
  classDef processReq fill:#ffffff,stroke:#475569,stroke-width:1.5px,color:#0f172a,font-weight:600;
  classDef input      fill:#cffafe,stroke:#0891b2,stroke-width:1.8px,color:#164e63;
  classDef inputReq   fill:#cffafe,stroke:#0891b2,stroke-width:1.8px,color:#164e63,font-weight:600;
  classDef decisionReq fill:#fef3c7,stroke:#d97706,stroke-width:2.5px,color:#78350f,font-weight:700;
  classDef chOk      fill:#dcfce7,stroke:#16a34a,color:#14532d;
  classDef chWarn    fill:#fef3c7,stroke:#d97706,color:#78350f;
  classDef chRisk    fill:#fee2e2,stroke:#dc2626,color:#7f1d1d;
  linkStyle default stroke:#94a3b8,stroke-width:1.6px;

  START(["🟢 문진 시작: 갑상선 기능 문진"]):::terminator
  RESULT(["🏁 결과 산출"]):::terminator

  S167["섹션 1: 항진 의심 증상<br/>(8)"]:::process
  START --> S167
  S168["섹션 2: 저하 의심 증상<br/>(8)"]:::process
  S167 --> S168
  S169["섹션 3: 병력·검진<br/>(7)"]:::process
  S168 --> S169
  S303["섹션 4: 항진 추가 증상<br/>(7)"]:::process
  S169 --> S303
  S304["섹션 5: 저하 추가 증상<br/>(7)"]:::process
  S303 --> S304
  S305["섹션 6: 병력·검사<br/>(6)"]:::process
  S304 --> S305
  S305 --> RESULT