.place-value-card {
  min-width: 0;
  grid-column: 1 / -1;
}

.place-value-activity {
  padding: 20px 18px 18px;
  min-width: 0;
  overflow-x: hidden;
}

.place-value-instruction {
  margin-bottom: 16px;
  color: #334155;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
}

.place-value-grid {
  display: grid;
  width: 100%;
  min-width: 100%;
  grid-template-columns: repeat(var(--place-columns), minmax(0, 1fr));
  justify-content: center;
  gap: clamp(3px, 1vw, 8px);
}

.place-value-digit {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 72px;
  place-items: center;
  border-radius: 14px;
  color: #172033;
  background: #f1f5f9;
  font-size: clamp(31px, 7vw, 46px);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.place-value-digit.before-comma::after {
  position: absolute;
  right: -.12em;
  bottom: .13em;
  z-index: 1;
  color: #2563eb;
  content: ",";
  font-size: .72em;
}

.place-value-name,
.place-value-slot {
  display: grid;
  min-width: 0;
  min-height: 54px;
  place-items: center;
  padding: 7px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 750;
  hyphens: auto;
  line-height: 1.2;
  overflow-wrap: anywhere;
  text-align: center;
}

.place-value-name {
  color: #1d4ed8;
  background: #dbeafe;
}

.place-value-slot {
  border: 2px dashed #94a3b8;
  color: #475569;
  background: #fff;
  cursor: pointer;
}

.place-value-slot:empty::before {
  color: #94a3b8;
  content: "Выберите";
  font-weight: 600;
}

.place-value-slot.correct {
  border-color: #059669;
  color: #047857;
  background: #d1fae5;
}

.place-value-slot.wrong {
  border-color: #dc2626;
  color: #b91c1c;
  background: #fee2e2;
}

.place-value-bank {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.place-value-label {
  padding: 8px 11px;
  border: 1px solid #bfdbfe;
  border-radius: 9px;
  color: #1d4ed8;
  background: #eff6ff;
  font-size: 12px;
  font-weight: 750;
  cursor: grab;
}

.place-value-label.selected {
  color: #fff;
  background: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .18);
}

.place-value-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.place-value-check,
.place-value-reset {
  min-height: 38px;
  padding: 8px 14px;
  border-radius: 9px;
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
}

.place-value-check {
  border: 0;
  color: #fff;
  background: #2563eb;
}

.place-value-reset {
  border: 1px solid #cbd5e1;
  color: #475569;
  background: #fff;
}

.place-value-feedback {
  min-height: 22px;
  margin-top: 10px;
  color: #475569;
  font-size: 13px;
  font-weight: 750;
  text-align: center;
}

.place-value-feedback.success { color: #047857; }
.place-value-feedback.error { color: #b91c1c; }

.pv-place-demo-digit.is-lit {
  color: #1d4ed8;
  background: #dbeafe;
}

@media (max-width: 600px) {
  .place-value-activity { padding-inline: 8px; }
  .place-value-grid { gap: 3px; }
  .place-value-digit { min-height: 58px; font-size: clamp(27px, 9vw, 38px); }
  .place-value-name, .place-value-slot {
    min-height: 66px;
    padding: 4px 2px;
    font-size: 10px;
  }
}