Behavior

• Auto-play (default: No): gently sweeps the divider until the visitor interacts
• Auto-play Cycle (ms) (default: 4000): time for one direction of the sweep
• Intro Peek (default: No): short nudge animation when the module enters the viewport. Leave off for a stable first paint.
• Keyboard Control (default: Yes): arrow keys move the divider; Home and End jump to 0% and 100%
• Keyboard Step (%) (default: 5): how far each arrow key moves the divider

Auto-play and intro peek respect prefers-reduced-motion and stop as soon as the visitor takes control.