findFeaturedMatch → findFeaturedMatches: returns all matches sharing the
earliest kickoff, enabling the hero to show 2+ simultaneous group-final games
(same phase, shared time/countdown). renderHero splits single-match (unchanged
DOM) vs multi-match (stacked with dividers). heroMatchupHTML extracted for
reusable matchup layout.
CSS: .hero-matchups/match/divider/time for vertical stacking and shared time.
i18n: hero.nextMatches (EN/PT) for multi-match label.
