body{font-family:Arial,sans-serif;color:#1a2630;background:#f7f9fa;margin:0;line-height:1.65}header{background:#3d5a6b;color:#fff;padding:28px 20px}main{max-width:850px;margin:0 auto;padding:40px 22px}section{background:#fff;border:1px solid #d8e3e8;border-radius:14px;padding:22px;margin:0 0 18px}h1,h2{font-weight:500}a{color:#3d5a6b}.back{color:#fff}.muted{color:#5a6e7a;font-size:.92rem}