body{font-family:Arial,Helvetica,sans-serif;margin:0;padding:0;line-height:1.6;color:#333;background:#f9f9f9;}
    header{background:#222;color:#fff;padding:1.5rem 2rem;}
    header h1{margin:0;font-size:1.75rem;}
    main{max-width:900px;margin:2rem auto;padding:0 1rem;background:#fff;border-radius:8px;box-shadow:0 2px 6px rgba(0,0,0,.1);}
    section{padding:1.5rem;}
    section h2{margin-top:0;color:#0073e6;}
    footer{font-size:.875rem;text-align:center;margin:2rem 0;color:#666;}
    a{color:#0073e6;text-decoration:none;}