.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.site-header.scrolled { border-color: var(--line); }
.site-header .wrap {
  display: flex;
  align-items: center;
  height: 56px;
  gap: 28px;
  background-color: hsl(35 13% 5%);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.02em; font-size: 16px; }
.brand svg, .brand img { width: 26px; height: 26px; object-fit: contain; }
.site-nav { display: flex; gap: 4px; margin-left: 8px; }
.site-nav a { padding: 6px 12px; border-radius: 8px; font-size: 14px; color: var(--muted); transition: color 0.2s, background 0.2s; }
.site-nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.header-actions { margin-left: auto; display: flex; gap: 8px; }
.home-page .header-actions .btn { border-radius: 0; }

@media (max-width: 760px) {
  .site-nav { display: none; }
  .site-header .wrap { gap: 12px; }
}