body{font-family:system-ui,Arial,sans-serif;max-width:820px;margin:40px auto;padding:0 20px;color:#1d2433;line-height:1.6}h1{font-size:26px}h2{font-size:19px;margin-top:28px}a{color:#0b6b6b}hr{margin:40px 0;border:0;border-top:1px solid #ddd}small{color:#666}