# Rotating hero without focus — dev spec
Site: yahoo.com · Priority 3 · Urgent · Effort: High (5+ days)

## Problem
The homepage's hero area is a rotating carousel of unrelated content with no single clear message, diluting the visitor's attention and intent.

## Evidence (from the live site)
> Body_sample shows multiple 'Featured' items: weather, horoscope, events, sports scores, and 'Yahoo Scout' chat prompt, all competing for attention.

## Current state
h1: None; cta: See forecast, See more stories on Yahoo 100; notes: The hero rotates through weather, horoscope, events, sports, and a chat prompt, none of which are tied to a clear value proposition or conversion goal.

## Required change
h1: Your daily briefing, personalized; cta: Sign in to get started; notes: Replace the rotating hero with a single, clear value proposition that emphasizes personalization and daily relevance, with a CTA to sign in or customize.

## Acceptance criteria
- GIVEN a first-time visitor on the affected page
- WHEN the change is live
- THEN Replace the rotating hero with a single, clear value proposition that emphasizes personalization and daily relevance, with a CTA to sign in or customize.
- AND no layout regression at 375px / 768px / 1280px
- AND the changed control is keyboard-reachable with an accessible name

## Tracking
- Fire `cro_rotating_hero_without_focus` on interaction with the changed element
- Verify the event fires in BOTH variants before opening traffic

## Test plan
- Two-proportion z-test, 95% significance, 80% power
- 124,891 visitors per variant to detect a 8.0% relative lift
- Run at least one full business cycle; duration depends on traffic

## Rollback
Feature-flag the change; revert if the primary metric drops for 3 consecutive days.