.site-header {
  transition: background-color 220ms ease, border-color 220ms ease, transform 280ms ease,
    min-height 220ms ease;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  border-bottom: 1px solid transparent;
  background: rgba(10, 14, 20, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 220ms ease, border-color 220ms ease;
  z-index: -1;
}

.site-header.is-scrolled::before {
  background: rgba(10, 14, 20, 0.68);
  border-bottom-color: rgba(251, 191, 36, 0.22);
}

.site-header.is-scrolled {
  min-height: 4.1rem;
}

.site-header.is-scrolled .nav-wrap {
  min-height: 4.1rem;
}

.site-header.nav-hidden {
  transform: translateY(-100%);
}

.site-header.is-scrolled .brand {
  font-size: 0.94rem;
}

.reveal {
  opacity: 0;
  transform: translate3d(0, 1.5rem, 0);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.reveal-stagger .reveal {
  transition-delay: var(--stagger-delay, 0ms);
}

.service-card {
  transition: transform 260ms ease, border-color 260ms ease, box-shadow 260ms ease;
}

.service-card:hover {
  transform: translateY(-0.28rem);
  border-color: rgba(251, 191, 36, 0.55);
  box-shadow: 0 16px 34px rgba(245, 158, 11, 0.18);
}

.button {
  transition: transform 200ms ease, box-shadow 220ms ease, background-color 220ms ease,
    border-color 220ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.depth-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.depth-particle {
  position: absolute;
  width: var(--particle-size, 3px);
  height: var(--particle-size, 3px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.95), rgba(251, 191, 36, 0.15) 70%, transparent);
  opacity: var(--particle-opacity, 0.25);
  transform: translate3d(0, 0, 0);
  animation: particle-drift var(--particle-duration, 24s) linear infinite;
  animation-delay: var(--particle-delay, 0s);
}

@keyframes particle-drift {
  0% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(var(--particle-drift-x, 20px), -35vh, 0);
  }

  100% {
    transform: translate3d(calc(var(--particle-drift-x, 20px) * -0.6), -70vh, 0);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .site-header {
    transition: none !important;
  }

  .depth-particle {
    animation: none !important;
    opacity: 0 !important;
  }
}