.toss-wa {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 900;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s ease;
}
.toss-wa:hover,
.toss-wa:focus-visible { transform: scale(1.06); }
.toss-wa:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
@media (max-width: 600px) {
  .toss-wa { right: 14px; bottom: 14px; width: 52px; height: 52px; }
}
@media print { .toss-wa { display: none; } }