.mountain-marker {
  background: transparent;
  border: none;
}

.mountain-marker span {
  display: block;

  width: 12px;
  height: 12px;

  border-radius: 999px;

  background: #d9b85f;

  box-shadow:
    0 0 0 6px rgba(217,184,95,0.12),
    0 0 18px rgba(217,184,95,0.5),
    0 0 40px rgba(217,184,95,0.28);

  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.mountain-marker:hover span {
  transform: scale(1.18);

  box-shadow:
    0 0 0 8px rgba(217,184,95,0.14),
    0 0 26px rgba(217,184,95,0.65),
    0 0 52px rgba(217,184,95,0.32);
}

.mountain-marker label {
  position: absolute;

  top: -10px;
  left: 22px;

  padding: 7px 10px;

  border-radius: 999px;

  background: rgba(8,12,16,0.82);

  border: 1px solid rgba(255,255,255,0.08);

  color: white;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;

  white-space: nowrap;

  backdrop-filter: blur(10px);

  opacity: 0;

  transform:
    translateY(4px);

  transition:
    opacity 0.18s,
    transform 0.18s;

  pointer-events: none;
}

.mountain-marker:hover label {
  opacity: 1;

  transform:
    translateY(0);
}

.mountain-marker.is-active span {
  background: #ff2b2b;

  box-shadow:
    0 0 0 10px rgba(255,43,43,0.18),
    0 0 30px rgba(255,43,43,0.82),
    0 0 64px rgba(255,43,43,0.45),
    0 0 120px rgba(255,43,43,0.22);

  transform: scale(1.28);
}

.mountain-marker.is-active label {
  opacity: 1;
  transform: translateY(0);
}