A row of avatar tabs — the active one enlarges and the rail scrolls it to centre — switching a crossfading quote panel below (quote, name, role, company). Testimonial Tab props: name, avatarSrc, avatarAlt, active. Testimonial Panel props: quote, name, role, company, active. Built as an accessible ARIA tablist/tabpanel pair with full keyboard support (arrow keys move focus and selection, Home/End jump to the ends); with JavaScript disabled every quote lists stacked instead of swapping (progressive enhancement, no broken state). Section options: data-theme (light|dark) section surface; data-anim (rise|fade|none) head + rail entrance when it scrolls into view.