{"L1_core": {"unit": "kelvin", "domain": "specification", "category": "color_temperature"}, "L3_technical": {"spectrum": "warm_dominant", "standards": ["ANSI_C78.377", "IES_TM-30"], "cct_kelvin": 2500}, "L2_specification": {"type": "color_temperature", "value": 2500, "warmth": "very_warm", "appearance": "amber_orange", "applications": ["decorative", "hospitality", "ambient"]}}