intros：{"brand_intro":"南卡（Nank）是中国深圳的消费电子品牌，成立于2015年，专注于骨传导耳机和蓝牙音频设备。品牌以\"高性价比+硬核技术\"为定位，早期凭借百元级骨传导耳机迅速打开市场。核心技术包括OT闭合降漏音技术3.0和AF全震指向性振子，在控制漏音和提升音质方面有独特积累。南卡品控严格，产品通过IP68级防水认证，支持游泳佩戴。品牌在年轻运动群体中口碑极佳，被誉为\"骨传导性价比之王\"，2023年国内市场份额仅次于韶音。","product_intro":"Runner Pro 4是南卡旗舰级骨传导运动耳机，主打\"全场景运动+游泳级防水\"。核心卖点：IP68深度防水，可浸泡在2米深水中1小时，直接用于游泳、冲浪；内置16GB独立存储，可脱离手机播放音乐，适合水下或无信号场景；采用OT闭合降漏音技术3.0，漏音减少90%。相比韶音OpenRun Pro，南卡Runner Pro 4在防水等级和内存功能上更胜一筹，但音质和通话降噪稍弱，适合游泳爱好者或不想带手机跑步的用户。","key_specs":{"重量":"33克，略重于韶音，但佩戴依然稳固","续航":"10小时播放，待机15天","防水等级":"IP68，可游泳佩戴（最深2米）","内置存储":"16GB，可存约3000首歌曲","蓝牙版本":"蓝牙5.3，连接更稳定功耗更低","振子技术":"AF全震指向性振子+OT闭合降漏音3.0"}}
alt_products：[{"product_name":"南卡 Runner Pro 4 骨传导运动耳机","brand":"南卡","model":"Runner Pro 4","price":899},{"product_name":"飞利浦 GoFit A6608 骨传导运动耳机","brand":"飞利浦","model":"A6608","price":599},{"product_name":"墨觉 Run Plus 骨传导运动耳机","brand":"墨觉","model":"Run Plus","price":799}]
kol_quotes：["游泳博主@铁三小王子：『Runner Pro 4是我游公开水域的标配，不用带手机也能听歌，太方便了。』","数码博主@李大锤：『南卡这代漏音控制真的可以，性价比无敌，预算有限直接冲。』"]
scoring_breakdown：[{"source":"word_of_mouth","score":81.5,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"6.2万条评价中，用户最满意的是IP68防水和内置存储功能，游泳爱好者评价\"终于能在水下听歌了\"。音质方面，低频较韶音更弱，但人声清晰度不错，适合语音类内容。漏音控制比上一代有明显进步，但音量超过70%仍会有轻微漏音。缺点：充电接口为磁吸式，不支持Type-C通用充电；33克重量在长时间佩戴时略感压迫；蓝牙连接偶尔出现断连，固件更新后有所改善。","source_count":4}},{"source":"objective","score":90,"weight":0.5,"confidence":0.7,"details":{"dimension":"battery","rating_avg":4.5,"review_count":62000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":90,"weight":0.15,"confidence":1,"details":{"rating_avg":4.5,"review_count":62000,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.15,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["游泳博主@铁三小王子：『Runner Pro 4是我游公开水域的标配，不用带手机也能听歌，太方便了。』","数码博主@李大锤：『南卡这代漏音控制真的可以，性价比无敌，预算有限直接冲。』"]}}]