article,main{max-width:800px;margin:0 auto}h3{font-size:clamp(1.25rem,2.5vw,1.6rem);margin-top:2rem;margin-bottom:.6rem;font-weight:600;line-height:1.35}h4,h5,h6{margin-top:1.5rem;margin-bottom:.4rem;font-weight:600}blockquote{border-left:4px solid #ccc;padding-left:1rem;margin:2rem 0;font-style:italic;color:#444}hr{margin:3rem 0;border:none;border-top:1px solid #ddd}section{margin-bottom:3rem}