body{font-family:Arial,Helvetica,sans-serif;line-height:1.6;color:#222;margin:0;background:#f7f4ef}main{max-width:860px;margin:0 auto;padding:32px 20px;background:white}header{background:#24311f;color:#fff;padding:34px 20px}header div{max-width:860px;margin:0 auto}.button{display:inline-block;background:#395c2f;color:#fff;padding:12px 16px;text-decoration:none;border-radius:8px}h1,h2{line-height:1.2}.card{background:#f7f4ef;padding:18px;border-radius:12px;margin:18px 0}footer{max-width:860px;margin:0 auto;padding:24px 20px;color:#555}code{background:#eee;padding:2px 5px;border-radius:4px}