.checker-basis {
  margin-top: 28px;
  padding: 24px;
  border: 1px solid rgba(46, 65, 56, .16);
  border-radius: 24px;
  background: rgba(255, 255, 255, .58);
}

.checker-options[hidden] {
  display: none !important;
}

.checker-basis h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.checker-basis p {
  margin: 0;
  max-width: 780px;
}

.checker-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.checker-stats div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px;
  border-radius: 18px;
  background: #fff;
}

.checker-stats strong {
  color: #a53760;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
}

.checker-stats span,
.checker-basis .database-note {
  color: #5f6c65;
  font-size: .92rem;
}

@media (max-width: 640px) {
  .checker-basis { padding: 18px; }
  .checker-stats { grid-template-columns: 1fr; }
}