/* Desktop — subtle grid + metallic sheen */
.hero { position:relative; overflow:hidden; }
.hero::before{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(0deg, rgba(255,255,255,.35), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 12px);
  opacity:.6; filter: blur(3px); pointer-events:none;
}