.activation-panel {
  margin: 0 0 1.35rem;
  padding: 1.1rem 1.15rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}

.activation-panel__head {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  margin-bottom: 1rem;
}

.activation-panel__icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 1rem;
}

.activation-panel__copy {
  min-width: 0;
}

.activation-panel__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
}

.activation-panel__sub {
  margin: .25rem 0 0;
  font-size: .8125rem;
  line-height: 1.55;
  color: var(--muted);
}

.activation-panel__form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .75rem;
  align-items: start;
}

.activation-panel__field {
  margin-bottom: 0;
}

.activation-panel__input {
  font-weight: 700;
  letter-spacing: .06em;
}

.activation-panel__submit {
  min-height: 48px;
  white-space: nowrap;
  gap: .45rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 640px) {
  .activation-panel__form {
    grid-template-columns: 1fr;
  }

  .activation-panel__submit {
    width: 100%;
    justify-content: center;
  }
}