body { font-family: Arial, sans-serif; margin:0; padding:0; line-height:1.6; }
header { background: #0B3D2E; color: #fff; padding: 2em 1em; text-align:center; }
header img {
  width: 200px;
  height: auto;
  margin-bottom: 15px;
  border-radius:50%; display:block; margin:0 auto 0.5em;
}
header h1 { margin:0.2em 0; font-size:1.8em; }
header p { margin:0.2em 0 1em; }
header a { color:#fff; text-decoration:none; }
.btn { display:inline-block; padding:0.7em 1.5em; background:#fff; color:#0B3D2E; text-decoration:none; border-radius:5px; font-weight:bold; margin-top:0.5em; }
section { padding:2em 1em; text-align:center; }
section h2 { margin-bottom:1em; color:#0B3D2E; }
ul { list-style:none; padding:0; }
li { margin:0.5em 0; }
footer { background:#eee; padding:1.5em 1em; text-align:center; font-size:0.9em; }
@media(max-width:600px){ header h1 { font-size:1.5em; } }