.proposal-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2em;
  font-family: 'Segoe UI', Arial, sans-serif;
  line-height: 1.6;
}
header h1 {
  color: #1b4d89;
  border-bottom: 3px solid #ddd;
  padding-bottom: 0.3em;
}
h2 {
  margin-top: 1.8em;
  color: #2c3e50;
}
.phc-section {
  margin-top: 0.5em;
}
a {
  color: #0066cc;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
footer {
  margin-top: 2em;
  font-size: 0.9em;
  color: #777;
}