const headers = document.querySelectorAll('.accordion-header'); headers.forEach(header => { header.addEventListener('click', () => { const active = header.classList.contains('active'); headers.forEach(h => { h.classList.remove('active'); h.nextElementSibling.style.display = 'none'; }); if (!active) { header.classList.add('active'); header.nextElementSibling.style.display = 'block'; } }); });