This is a practical playbook for parents of kids 5 to 17 who want calmer tech routines, better sleep, and fewer arguments. You’ll co-create a simple Family Tech Charter with your child, use no‑nag scripts to keep conversations short and kind, and deploy behavior design tools that make good choices easy. The plan focuses on transparent device settings, predictable routines, and age-tailored motivation frameworks so kids buy in. It includes adaptations for neurodiversity and sensitive temperaments, plus weekend, holiday, and travel protocols to prevent backsliding. The result is a system that helps most families reduce recreational screen time and restore harmony without turning anyone into the “screen police.”