- Mood words — “a warm, minimal logo sting”. Fastest to write; the agent owns the look.
- Style tokens — exact hexes, named textures (“halftone-dot”, “paper-cut matte”, “8-bit pixel”), type direction (“condensed caps”, “thin geometric sans, wide tracking”). Cheap precision, no downside.
- Full visual spec — every element gets shape + color + position + timing (see visual specs). Use when you’re recreating a specific look.
- 3D: any real depth, lighting, or camera motion → say “Three.js via the adapter”. CSS perspective transforms read flat on lighting-critical scenes, and Three.js is a supported seek-safe runtime.
- Sequencing: resolve simultaneity in the text. “The counter fades out and READY stamps in at 4s” produces an overlap; “fades out fully by 4.2s; at 4.2s READY stamps in” doesn’t.