.surface-panel {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(18px);
}

.nav-shadow {
  box-shadow: 0 14px 35px rgba(12, 24, 20, .07);
}

.scroll-progress {
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--pine), var(--cobalt));
  will-change: transform;
}