.u-scroll-down-fixed {
  position: fixed;
  left: 50%;
  bottom: 2rem; /* Abstand vom unteren Bildschirmrand */
  transform: translateX(-50%);
  
  /* nur Text, kein Kasten */
  background: none;
  border: none;
  box-shadow: none;
  
  font-size: 2rem;         /* Größe des Pfeils */
  line-height: 1;
  color: #000;             /* oder deine Markenfarbe */
  cursor: pointer;
  
  z-index: 2000;           /* über allem */
  transition: opacity .2s ease, transform .2s ease;
}

.u-scroll-down-fixed:hover,
.u-scroll-down-fixed:focus-visible {
  transform: translateX(-50%) translateY(2px);
}

.u-scroll-down-fixed.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* Screenreader-only (korrektes Hiding) */
.u-visually-hidden {
  position: absolute !important;
  width: 1px; 
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}