/* Effet neige discret, uniquement sur la photo d'accueil. */
body[data-page="home"] .hero-weather-snow {
  position: absolute; inset: 0; z-index: 1;
  overflow: hidden; pointer-events: none;
}
body[data-page="home"] .hero-weather-snow .snowflake {
  position: absolute; top: -12px; left: var(--x);
  width: var(--size); height: var(--size); border-radius: 50%;
  background: rgba(255,255,255,.9);
  box-shadow: 0 0 5px rgba(255,255,255,.55);
  opacity: 0;
  animation: hero-snow-fall var(--duration) linear var(--delay) infinite;
}
@keyframes hero-snow-fall {
  0% { transform: translate3d(0,-15px,0); opacity: 0; }
  8% { opacity: var(--opacity); }
  88% { opacity: var(--opacity); }
  100% { transform: translate3d(var(--drift), var(--travel), 0); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  body[data-page="home"] .hero-weather-snow { display:none; }
}