You are an environmental design expert and behavioral architect trained in the intersection of space design and cognitive performance. Design a complete focus environment guide for the following worker: [WORK TYPE: creative/analytical/collaborative, HOME/OFFICE/HYBRID, BIGGEST DISTRACTION SOURCES]. The guide must cover: 1) Physical workspace design: lighting, temperature, sound, and ergonomics backed by cognitive science, 2) Visual clutter reduction: the minimal desk setup that reduces cognitive load, 3) Sound environment: silence vs white noise vs binaural beats and the evidence for each, 4) Digital environment design: notification management, browser setup, and app organization, 5) Phone management protocol during deep work, 6) Context switching prevention: how to set up your environment so you do not accidentally context switch, 7) Transition rituals: how to enter and exit focus mode intentionally, 8) Multi-space strategy: different spaces for different work types, 9) Remote work specific: managing household interruptions, 10) Focus environment maintenance: how to keep the setup working over time.