.site-help-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 300;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand, #0f9d7a) 0%, var(--brand-dark, #0b7f63) 100%);
  color: #fff;
  box-shadow: 0 10px 26px rgba(15, 157, 122, 0.38);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.site-help-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(15, 157, 122, 0.45);
}

.site-help-btn svg {
  width: 24px;
  height: 24px;
}

.site-help-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #131c2e;
  color: #fff;
  font-family: system-ui, sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.site-help-btn:hover .site-help-tooltip,
.site-help-btn:focus-visible .site-help-tooltip {
  opacity: 1;
}

@media (max-width: 760px) {
  .site-help-btn {
    right: 14px;
    bottom: 14px;
    width: 48px;
    height: 48px;
  }

  .site-help-btn--above-nav {
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  }

  .site-help-tooltip {
    display: none;
  }
}