{"L1_core": {"domain": "lighting", "category": "mounting", "entity_type": "product", "subcategory": "led_profile"}, "L2_product": {"diffuser": {"opal_transmission_pct": [45, 55], "clear_transmission_pct": 90}, "finishes": ["anodized_natural", "anodized_black", "anodized_white", "powder_coated"], "material": {"alloy": "EN_AW_6063", "temper": ["T5", "T6"], "thermal_conductivity_W_mK": 201}, "standards": ["EN 573-3", "EN 755-2", "EN 12020-2"], "dimensions": {"standard_lengths_mm": [2000, 2500, 3000], "compatible_strip_widths_mm": [8, 10, 12]}, "accessories": ["end_caps", "mounting_clips", "brackets", "connectors"], "mounting_types": ["surface", "recessed", "corner_45deg", "suspended", "ceiling_trimless"]}, "L5_metadata": {"updated": "2026-01-02", "version": "2.0"}, "L3_relations": {"parent": "aluminum_profile", "contains": ["led_strip", "diffuser", "end_caps"], "requires": ["mounting_hardware"]}}