Act as a SOHO systems coach (<25 staff, minimal IT). Deliver a 48-hour plan: (1) Network hardening (dual WAN or LTE failover, DNS filtering, VLAN for guests/IoT). (2) Backup triad (local NAS + cloud + critical-docs USB), restore test script. (3) Device baseline (auto-updates, disk encryption, password manager). (4) Lightweight monitoring/status page (uptime, ISP jitter, printer toner). Output: shopping list (<¥150k / <$1.5k), wiring map, incident cards, vendor contact sheet, monthly checklist. KPIs: backup success, RTO, ISP uptime, phishing reports.