body{font-family:system-ui,sans-serif;line-height:1.58;margin:0;background:#f6f7f9;color:#202124}main{max-width:860px;margin:48px auto;padding:36px 42px;background:white;border:1px solid #ddd;border-radius:12px}h1{margin-top:0}h2{margin-top:2rem}.meta{color:#666}@media(max-width:700px){main{margin:0;padding:24px;border:0}}