body{margin:0;background:#f4f6f9;color:#253345;font:16px/1.65 system-ui,sans-serif}main{max-width:650px;margin:12vh auto;padding:36px;background:#fff;border:1px solid #e0e6ee;border-radius:12px}.brand{color:#4c8bf7;font-size:14px;font-weight:700;letter-spacing:2px}h1{font-size:32px;line-height:1.2}a{color:#326fcf}p{margin:20px 0}@media(max-width:700px){main{margin:24px;padding:24px}h1{font-size:28px}}