.roadmap-tabs button {
  appearance: none;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: #0d0e13;
  color: #817c88;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.roadmap-tabs button:hover {
  color: #d6cde0;
  border-color: #b77aff42;
  transform: translateY(-1px);
}

.roadmap-tabs button:focus-visible {
  outline: 2px solid #c28cff;
  outline-offset: 3px;
}

.roadmap-tabs button.active {
  background: linear-gradient(145deg, #cbaaff, #9c5bea);
  border-color: transparent;
  color: #100b15;
  font-weight: 700;
  box-shadow: 0 8px 25px #9b55ec2b;
}

.column[hidden] { display: none; }

.board.is-filtered {
  grid-template-columns: minmax(0, 760px);
  justify-content: start;
}

.board.is-filtered .column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.board.is-filtered .column-title { grid-column: 1 / -1; }
.board.is-filtered .column article { margin-top: 0; }

@media (max-width: 760px) {
  .roadmap-tabs { gap: 7px; }
  .roadmap-tabs button { padding: 10px 13px; }
  .board.is-filtered .column { grid-template-columns: 1fr; }
}