{"page_content": "# 售后手册\n\n## 退换货\n\n签收 7 日内可无理由退货，商品需保持完好，包装与配件齐全。质量问题 15 日内可换货，需提供照片凭证并联系客服登记。跨境订单以页面公示为准，退回运费由买家承担。\n\n## 发货时效\n\n一般订单 48 小时内发出，节假日顺延。预售商品以商品页标注的发货时间为准，如遇缺货会主动联系并可全额退款。\n", "metadata": {"source": "policy/aftersale.md", "file_name": "aftersale.md", "file_type": "md", "doc_id": "a1b2c3d4e5f6", "loaded_at": "2026-08-12T14:00:00+00:00"}}
{"page_content": "问：发货要多久？\n答：一般 48 小时内发出，节假日顺延。\n\n问：可以修改收货地址吗？\n答：未发货前可在订单详情页自助修改，已发货请联系快递方处理。\n", "metadata": {"source": "faq.txt", "file_name": "faq.txt", "file_type": "txt", "doc_id": "b3b4f59f2504", "loaded_at": "2026-08-12T14:00:00+00:00"}}
{"page_content": "开机后指示灯亮起，按下模式键可切换手动与自动档。选择自动档后，风速会根据空气质量自动调节。滤芯到期时指示灯会闪红灯，此时需更换滤芯。更换完成后长按复位键三秒，计时器归零。", "metadata": {"source": "manual.pdf", "file_name": "manual.pdf", "file_type": "pdf", "doc_id": "c7d8e9f0a1b2", "page": 11, "total_pages": 20, "loaded_at": "2026-08-12T14:00:00+00:00"}}