.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  padding: 10px 15px;
  background: rgba(8, 17, 30, 0.85);
  backdrop-filter: blur(12px);
}
.site-header .container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: bold; font-size: 20px; line-height: 1; }
.brand img { width: 40px; height: 40px; border-radius: 12px; }
.site-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.site-nav a { color: white; transition: 0.3s ease; font-size: 0.95rem; }
.site-nav a:hover, .site-nav a.active { color: #2A8BFF; }
.nav-cta { margin-left: 0.5rem; }