Light pollution disrupts sleep quality and people don't know how to protect their sleep environment

People are losing sleep quality due to ambient light from windows, streetlights, and electronic devices, but lack practical solutions to block light while sleeping. This affects anyone in urban areas or with poor bedroom light control, and current solutions (blackout curtains, eye masks) are either expensive, uncomfortable, or incomplete. The problem is urgent because poor sleep cascades into health issues, reduced productivity, and quality of life degradation.