.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(11, 17, 23, 0.92);
  backdrop-filter: blur(14px);
}

.site-header .nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
  padding-top: 0;
  padding-right: 1.25rem;
  padding-bottom: 0;
  padding-left: 1.25rem;
}

.site-header .logo {
  flex: 0 0 auto;
  color: var(--text, #f4f7fb);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1;
  text-decoration: none;
}

.site-header .logo span {
  color: var(--accent, #63a1ff);
}

.site-header .logo:hover {
  color: var(--text, #f4f7fb);
  text-decoration: none;
}

.site-header .nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  color: var(--muted, #a9b4c0);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.98rem;
  font-weight: 700;
}

.site-header .nav-links > a,
.site-header .feature-menu > summary {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  color: var(--muted, #a9b4c0);
  text-decoration: none;
}

.site-header .nav-links > a:hover,
.site-header .feature-menu > summary:hover {
  color: var(--text, #f4f7fb);
  text-decoration: none;
}

.site-header .nav-links > .btn-primary {
  color: #06101c;
}

.site-header .nav-links > .btn-primary:hover {
  color: #06101c;
}

.site-header .feature-menu {
  position: relative;
}

.site-header .feature-menu > summary {
  gap: 0.4rem;
  list-style: none;
  cursor: pointer;
}

.site-header .feature-menu > summary::-webkit-details-marker {
  display: none;
}

.site-header .feature-menu > summary::after {
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  content: "";
  transform: rotate(45deg) translateY(-1px);
}

.site-header .feature-menu[open] > summary::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

.site-header .feature-menu-panel {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  width: min(21rem, calc(100vw - 2.5rem));
  padding: 0.5rem;
  border: 1px solid var(--border, #2b3642);
  border-radius: 12px;
  background: #111820;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
  opacity: 0;
  transform: translateY(-0.35rem);
  transition: opacity 160ms ease, transform 160ms ease;
}

.site-header .feature-menu[open] .feature-menu-panel {
  opacity: 1;
  transform: translateY(0);
}

.site-header .feature-menu-panel a {
  display: block;
  padding: 0.7rem 0.8rem;
  border-radius: 8px;
  color: var(--soft, #d8e0ea);
  font-size: 0.94rem;
  text-decoration: none;
}

.site-header .feature-menu-panel a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text, #f4f7fb);
  text-decoration: none;
}

.site-header .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.1;
}

.site-header .btn-primary {
  background: var(--accent, #63a1ff);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 34px rgba(99, 161, 255, 0.24);
  color: #06101c;
}

.site-header .btn-primary:hover {
  background: #7ab1ff;
  transform: translateY(-2px);
}

@media (max-width: 759px) {
  .site-header .nav {
    position: relative;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem 1rem;
    min-height: 0;
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
  }

  .site-header .nav-links {
    display: flex;
    flex-wrap: nowrap;
    width: 100%;
    min-width: 0;
    justify-content: center;
    gap: clamp(1rem, 4vw, 1.35rem);
    font-size: 0.9rem;
  }

  .site-header .feature-menu {
    position: static;
    min-width: 0;
  }

  .site-header .nav-links > a,
  .site-header .feature-menu > summary {
    justify-content: center;
    min-width: 0;
    min-height: 38px;
    padding-right: 0;
    padding-left: 0;
    white-space: nowrap;
  }

  .site-header .nav-links > a.nav-demo-link {
    display: none;
  }

  .site-header .feature-menu-panel {
    top: calc(100% + 0.35rem);
    right: 1rem;
    left: 1rem;
    width: auto;
  }
}
.site-header a.logo {
  font-size: 1.5rem;
}