v3.25.4

Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) | 12 Months Ended
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Sep. 30, 2025 HKD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 HKD ($) | Sep. 30, 2023 HKD ($)
Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) [Line Items] |  |  |  |
Balance at of the beginning of the period | $ 1,747,463 | $ 224,584 | $ 6,011,309 |
Add: progress billings | 1,374,493 | 176,649 | 1,208,583 |
Less: revenue recognized from opening balance of contract liabilities | (1,052,583) | (135,278) | (5,472,429) | $ 297,883
Total contract liabilities | 2,069,373 | 265,955 | 1,747,463 | $ 6,011,309
System Development [Member] |  |  |  |
Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) [Line Items] |  |  |  |
Balance at of the beginning of the period | 1,549,963 |  |  |
Total contract liabilities | 1,336,880 | 171,816 | 1,549,963 |
AI-OCR development [Member] |  |  |  |
Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) [Line Items] |  |  |  |
Balance at of the beginning of the period | 197,500 |  |  |
Total contract liabilities | 316,000 | 40,612 | 197,500 |
Technological Support and Maintenance Service and Other Services [Member] |  |  |  |
Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) [Line Items] |  |  |  |
Balance at of the beginning of the period |  |  |  |
Total contract liabilities | 201,168 | 25,854 |  |
Hardware installation [Member] |  |  |  |
Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) [Line Items] |  |  |  |
Balance at of the beginning of the period |  |  |  |
Total contract liabilities | $ 215,325 | $ 27,673 |  |

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