.prose details{border:1px solid #e5e7eb;border-radius:.75rem;padding:.75rem 1rem;margin:1rem 0;background:#f9fafb}.prose summary{font-weight:700;cursor:pointer;color:#1a2744;list-style:none;display:flex;align-items:center;gap:.5rem}.prose summary::-webkit-details-marker{display:none}.prose summary:before{content:"▶";font-size:.65rem;transition:transform .2s;flex-shrink:0}.prose details[open] summary:before{transform:rotate(90deg)}.prose details[open]{background:#eff6ff;border-color:#bfdbfe}