A7 — color-block headline slate

Composes

• bg-swap (hard-cut on scene entry — the saturated color IS the visual punch)
• pop-in (on the headline)
• Optional squiggle-draw-on accent (underline under the headline)

Layout

canvas: 1080x1920 (or pack-specified)

headline_zone:
  anchor: center
  origin: { x: canvas_w/2, y: canvas_h/2 }
  align: center
  max_width_pct: 80
  vertical_align: center