intros：{"brand_intro":"MAC（Make-up Art Cosmetics）是1984年创立于加拿大的专业彩妆品牌，现隶属于雅诗兰黛集团。品牌以\"所有年龄、所有种族、所有性别\"为理念，在彩妆界拥有极高的专业地位。创始人Frank Toskan和Frank Angelo最初为满足专业化妆师需求而研发产品，其唇部产品线以高饱和度、持久度和丰富色号闻名。MAC在品控上坚持\"专业级\"标准，所有产品均通过皮肤科医生测试，不进行动物实验（部分市场除外）。其Prep + Prime系列是品牌底妆打底的核心产品线，被全球化妆师誉为\"唇妆第一步\"。","product_intro":"MAC妆前底唇膏是一款专为唇部设计的打底产品，定位为\"唇妆画布\"。核心卖点在于其独特的丝滑凝胶质地，能瞬间填平唇纹、淡化唇缘边界，同时吸附多余油脂，使后续口红显色更均匀、持久度提升30%以上。适用场景包括日常通勤、重要约会、拍摄及舞台妆。相比竞品，它不含油分，不会导致口红\"滑移\"或结块，且自带SPF15防晒值，兼顾护唇功能。","key_specs":{"质地":"丝滑凝胶，无油配方","防晒值":"SPF15","容量":"1.7g","适配人群":"唇纹深、唇色不均、口红易脱妆者","核心成分":"维他命E、荷荷巴油衍生物","使用方式":"唇部打底后等待30秒再涂口红"}}
alt_products：[{"product_name":"MAC 妆前底唇膏","brand":"MAC","model":"Prep + Prime Lip","price":210},{"product_name":"NARS 唇部打底膏","brand":"NARS","model":"Lip Primer","price":260}]
kol_quotes：[]
scoring_breakdown：[{"source":"word_of_mouth","score":89.89999999999999,"weight":0.5,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"综合天猫、京东、小红书及专业评测，该产品口碑呈现两极分化但总体高分。优点：90%用户认可其\"隐形唇纹\"效果，尤其适合哑光口红；专业化妆师评价其\"让干枯唇瞬间变水润画布\"。缺点：部分用户反馈质地偏厚重，涂抹过多会导致口红\"斑驳\"；价格偏高（210元/1.7g），性价比争议较大。小红书上\"MAC底唇膏\"话题浏览量超2亿，被戏称为\"口红伴侣\"。","source_count":4}},{"source":"objective","score":92,"weight":0.1,"confidence":0.7,"details":{"dimension":"after_service","rating_avg":4.6,"review_count":185000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":92,"weight":0.25,"confidence":1,"details":{"rating_avg":4.6,"review_count":185000,"source":"product_reviews_aggregate"}}]