h1{font-size:2.5rem;font-weight:700;color:#1a1a1a;margin-bottom:1rem}h2{font-size:2rem;font-weight:600;color:#1a1a1a;margin-top:2rem;margin-bottom:1rem}h3{font-size:1.5rem;font-weight:500;color:#333;margin-top:1.5rem;margin-bottom:0.75rem}h4{font-size:1.25rem;font-weight:400;color:#444}h5,h6{font-size:1rem;font-weight:400;color:#555}