.platform-tools {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  font:
    12px "Noto Serif TC",
    serif;
}
.platform-tools button {
  border: 1px solid rgba(43, 43, 43, 0.25);
  color: #2b2b2b;
  background: #fcf9f2;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}
.platform-tools.standalone {
  position: fixed;
  top: 8px;
  right: 8px;
  z-index: 40;
}
.platform-tools button:focus-visible {
  outline: 3px solid #a77a35;
  outline-offset: 2px;
}
@media (max-width: 540px) {
  .puzzle-nav {
    flex-wrap: wrap;
  }
  .nav-links {
    flex-wrap: wrap;
    gap: 10px;
  }
  .platform-tools button {
    padding: 8px;
    font-size: 11px;
  }
}
.platform-tools.duel-tools {
  top: auto;
  right: auto;
  bottom: 12px;
  left: 12px;
}

.platform-zen-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}