Terminal Mono.

Developer-native dark deck theme: near-black #0a0e14 ground, Geist Mono everywhere with large weight-400 titles (never bold display), Dracula-green #50fa7b accent, faint dot-grid texture, and low-opacity green hairlines. Zero skeuomorphism, zero effects - pure typographic discipline. Scroll-snap single-file HTML with SlideEngine navigation, hash routing, and automatic light mode (#f4f6f8 / #0d7a3e) via prefers-color-scheme. Based on nicobailon/visual-explainer terminal-mono.