/* Product themes: only variables change. 80% neutral surface, 20% product colour. */
[data-product="sweep"] {
  --p1: var(--sweep-1);
  --p2: var(--sweep-2);
  --p-glow: rgba(155, 232, 0, .08);
}
[data-product="sentinel"] {
  --p1: var(--sentinel-1);
  --p2: var(--sentinel-2);
  --p-glow: rgba(18, 207, 255, .08);
}

/* Product page heroes: one quiet glow, no full-screen gradient. */
body[data-product="sweep"] .hero::before {
  background: radial-gradient(circle at 78% 20%, rgba(155, 232, 0, .14), transparent 42%);
}
body[data-product="sentinel"] .hero::before {
  background: radial-gradient(circle at 70% 20%, rgba(65, 54, 255, .2), transparent 40%),
              radial-gradient(circle at 20% 90%, rgba(18, 207, 255, .07), transparent 40%);
}
body[data-product="sentinel"] .btn-primary { background: linear-gradient(90deg, var(--sentinel-1), #4FA0FF); }

/* Product marks placed inside cards on the neutral homepage need their own accent. */
.product-card[data-product] { --p-glow: transparent; }
.product-card[data-product="sweep"] { --p1: var(--sweep-1); }
.product-card[data-product="sentinel"] { --p1: var(--sentinel-1); }