.product-box {
  position: relative; /* anchor for popup */
}

.hover-popup {
  position: absolute;
  top: 0;               /* align with top of product box */
  left: 100%;           /* show just beside the right edge */
  margin-left: 5px;    /* small gap */
  width: 300px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  padding: 15px;
  display: none;
  z-index: 200;
}

.product-box:hover .hover-popup {
  display: block;
}

.hover-popup::before {
  content: "";
  position: absolute;
  top: 20px;               /* adjust vertical alignment */
  left: -19px;              /* stick to popup edge */
  border-width: 10px;
  border-style: solid;
  border-color: transparent #fff transparent transparent; /* right-facing arrow */
  filter: drop-shadow(-1px 1px 1px rgba(0,0,0,0.1)); /* subtle shadow */
}

/* Open LEFT side */
.product-box.open-left .hover-popup {
  left: auto;
  right: 100%;       /* stick to left edge of box */
  margin-left: 0;
  margin-right: 5px;
}

.product-box.open-left .hover-popup::before {
  left: auto;
  right: -19px;             /* move arrow to other side */
  border-color: transparent transparent transparent #fff; /* left-facing arrow */
  filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.1));
}

.certificate_mobile{
	display: none;
}

@media only screen and (max-width: 667px) {
	.certificate_desktop {
		display: none;
	}
	.certificate_mobile{
		display: block;
	}
	.mb-center {
		text-align: center;
	}
}