*{box-sizing:border-box}html,body{color:#111827;background:#f8fafc;margin:0;padding:0;font-family:Arial,Helvetica,sans-serif}a{color:#1d4ed8;text-decoration:none}a:hover{text-decoration:underline}.container{max-width:760px;margin:0 auto;padding:2rem 1rem 3rem}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;margin-top:1rem;padding:1.25rem}.muted{color:#4b5563}