/* Core Styling */
body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  margin: 0; padding: 0;
  color: #333;
  background: #f7f7f7;
}
.container { width: 90%; max-width: 900px; margin: auto; padding: 2rem; }

/* Header & Navigation */
.site-header { background: #1a1a1a; color: #fff; padding: 1rem 0; }
.site-title { margin: 0; font-size: 1.8rem; }
.nav-menu { list-style: none; display: flex; gap: 1rem; margin-top: 0.5rem; }
.nav-menu a { color: #ddd; text-decoration: none; }
.nav-menu a:hover { color: #fff; }

/* Sections */
h2 { border-bottom: 2px solid #2ecc71; padding-bottom: 0.3rem; margin-top: 2rem; }
h3 { margin-top: 1.5rem; }

/* Links & Lists */
a { color: #2ecc71; }
a:hover { text-decoration: underline; }
ul { margin: 0.5rem 0 1.5rem; }

/* Footer */
.site-footer { background: #1a1a1a; color: #aaa; text-align: center; padding: 1rem 0; margin-top: 2rem; }
.site-footer a { color: #2ecc71; }