scoring_breakdown:[{"source":"word_of_mouth","score":83.8,"weight":0.35,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"京东和天猫4.5万条评价中,用户普遍认可其\"性价比超高\",音准在百元内产品中表现最佳。小红书宝妈\"西西妈妈\"评价\"和Hape比音色稍闷,但价格只要一半,日常玩完全够用\"。缺点包括部分琴片边缘有轻微毛刺(需打磨),以及木槌敲击声偏大。专业评测(如\"中国玩具检测中心\")指出其甲醛含量为0.02mg/L,远低于国标0.1mg/L,但建议使用前用湿布擦拭。售后服务方面,可优比提供30天无理由退换,口碑较好。","source_count":3}},{"source":"objective","score":92,"weight":0.2,"confidence":0.7,"details":{"dimension":"after_service","rating_avg":4.6,"review_count":45000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":92,"weight":0.2,"confidence":1,"details":{"rating_avg":4.6,"review_count":45000,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.25,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["老爸评测:可优比敲琴在百元内价位段表现优秀,适合作为宝宝第一把敲琴","崔玉涛:性价比之选,材质安全,可以放心给宝宝玩"]}}]