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Related Party Transactions (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Related Party Transactions [Abstract]
Non-revolving facility agreements		¥ 90,000

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- Definition

Represents the non-revolving facility agreements guaranteed by the ultimate significant shareholder.

+ References

No definition available.

+ Details

Name:	anl_NonRevolvingFacilityAgreementsGuaranteedByUltimateSignificantShareholder
Namespace Prefix:	anl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	ifrs-full_RelatedPartyTransactionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration