body{font-family:Arial, sans-serif;margin:0;background:#f5f7fa;color:#222;}
header{background:#0f3d5c;color:#fff;padding:15px;}
nav a{color:#fff;margin-right:15px;text-decoration:none;}
.container{width:90%;max-width:1100px;margin:auto;}
h1,h2{color:#0f3d5c;}
.btn{background:#e66a2c;color:#fff;padding:10px 15px;text-decoration:none;border-radius:4px;}
.section{padding:40px 0;}
footer{background:#0f3d5c;color:#fff;padding:20px;text-align:center;}
ul{line-height:1.8;}