.video-popup {
  display: none;
  position: fixed;
  z-index: 99999;
  inset: 0; /* shorthand for top/right/bottom/left: 0 */
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
}

.video-container {
  position: relative;
  max-width: 800px;
  width: 90%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}

/* Sound icon (top-left) */
.sound-icon {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 44px;
  height: 44px;
  line-height: 44px;
  text-align: center;
  font-size: 20px;
  border-radius: 50%;
  background: rgba(77, 166, 255, 1);
  color: #fff;
  border: 2px solid #fff;
  cursor: pointer;
  z-index: 1001;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: transform 0.18s ease, background 0.18s ease;
}
.sound-icon:hover {
  transform: scale(1.12);
  background: rgba(102, 179, 255, 1);
}

/* Close icon (top-right) */
.close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  line-height: 44px;
  text-align: center;
  font-size: 26px;
  border-radius: 50%;
  background: rgba(255, 77, 77, 1);
  color: #fff;
  border: 2px solid #fff;
  cursor: pointer;
  z-index: 1001;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: transform 0.18s ease, background 0.18s ease;
}
.close-btn:hover {
  transform: scale(1.12);
  background: rgba(255, 102, 102, 1);
}

#introVideo {
  width: 100%;
  height: auto;
  display: block;
}