Still Point

Develop a browser-based kinetic trance music instrument named Still Point, designed to deliver an immersive, interactive audio-visual experience centered on a core on-screen spinner control. Let users flick the spinner to launch a hypnotic techno session, where the spinner's rotation speed directly maps to the track's BPM, rotation direction toggles between different musical scales, and pressing the spinner's center simultaneously stops all audio playback and visual rendering. Structure the user experience across five sequential distinct phases: Initiation, Build, Distortion, Phase Lock, and Release, with each phase featuring unique on-screen usage prompts and independent visual state configurations. Generate all layered audio components including drone, kick, bass, hats and pluck entirely through the Web Audio API to ensure native browser compatibility without external plugin dependencies. Render dynamic, real-time Op Art style visual patterns on an HTML5 canvas that sync perfectly with the audio output and spinner interaction states. Add support for device motion tilt control functionality on mobile devices to expand interaction methods for touchscreen users. Integrate a dedicated Low Stimulation mode to reduce visual and audio intensity for accessibility needs, and build a bilingual user interface that supports seamless switching between English and Chinese languages for broader global usability. Ensure smooth performance across both desktop and mobile browser environments, with no required downloads or installations to access the full feature set.