.tool-support-link {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 110;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(15, 23, 42, .14);
  border-radius: 999px;
  background: rgba(255, 255, 255, .93);
  padding: 10px 16px;
  color: #111827;
  font: 750 .76rem/1.1 Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: .01em;
  text-decoration: none;
  box-shadow: 0 16px 42px rgba(15, 23, 42, .16);
  backdrop-filter: blur(18px);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.tool-support-link::before {
  content: "?";
  display: grid;
  width: 24px;
  height: 24px;
  margin-right: 8px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #00cfff, #3278ff 34%, #8a2be2 66%, #ff375f);
  color: #fff;
  font-size: .72rem;
  font-weight: 900;
}

.tool-support-link:hover,
.tool-support-link:focus-visible {
  border-color: rgba(50, 120, 255, .38);
  box-shadow: 0 20px 48px rgba(15, 23, 42, .2);
  transform: translateY(-2px);
}

@media (max-width: 560px) {
  .tool-support-link {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    min-height: 42px;
    padding: 8px 13px;
    font-size: .72rem;
  }
}

@media print {
  .tool-support-link { display: none !important; }
}