.qa-header h1{font-size:2.2rem;font-weight:700;color:#1a1a1a;margin-bottom:.8rem}.nested-reply{margin-left:3rem;padding:1rem;background:#f6f8fa;border-radius:6px;margin-top:1rem;border-left:3px solid #e1e4e8}@media (max-width:768px){.nested-reply{margin-left:1.5rem}}@media (max-width:480px){.nested-reply{margin-left:.5rem}}