.approx-question-nav {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 14px;
  padding: 10px 12px;
  border: 1px solid var(--hub-border);
  border-radius: var(--hub-radius-md);
  background: var(--hub-surface-muted);
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.approx-q-btn {
  flex: 0 0 auto;
  min-width: 32px;
  height: 32px;
  padding: 0 6px;
  border: 2px solid transparent;
  border-radius: var(--hub-radius-sm);
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
  color: var(--hub-ink);
  background: var(--hub-border);
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.approx-q-btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.approx-q-btn:disabled {
  cursor: default;
  opacity: 0.85;
}

.approx-q-btn.is-current {
  border-color: var(--hub-ink);
  box-shadow: 0 0 0 1px var(--hub-ink);
}

.approx-q-btn.is-pending,
.approx-q-btn.is-skipped {
  background: var(--hub-border);
  color: var(--hub-muted);
}

.approx-q-btn.is-correct {
  background: var(--hub-good);
  color: #fff;
}

.approx-q-btn.is-wrong {
  background: var(--hub-bad);
  color: #fff;
}

.approx-prompt {
  margin: 0 0 16px;
  padding: 16px 18px;
  border: 1px solid var(--hub-border);
  border-radius: var(--hub-radius-md);
  background: var(--hub-surface-muted);
  font-size: 15px;
  line-height: 1.55;
  color: var(--hub-ink);
}

.approx-choices .dev-choice {
  text-align: left;
  justify-content: flex-start;
}

#approxTotalTimer.is-low,
#snTotalTimer.is-low {
  color: var(--hub-timer-low-text);
}

.approx-answer-review {
  margin: 24px 0;
  text-align: left;
}

.approx-answer-review h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--hub-ink);
}

.approx-answer-review-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-height: min(60vh, 520px);
  overflow-y: auto;
}

.approx-answer-review-item {
  padding: 14px 16px;
  border: 1px solid var(--hub-border);
  border-radius: var(--hub-radius-md);
  background: var(--hub-surface);
}

.approx-answer-review-item.is-correct {
  border-color: color-mix(in srgb, var(--hub-good) 50%, var(--hub-border));
  background: var(--hub-good-soft);
}

.approx-answer-review-item.is-wrong {
  border-color: color-mix(in srgb, var(--hub-bad) 50%, var(--hub-border));
  background: var(--hub-bad-soft);
}

.approx-answer-review-item.is-skipped,
.approx-answer-review-item.is-pending {
  background: var(--hub-surface-muted);
}

.approx-answer-review-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.approx-answer-review-head strong {
  color: var(--hub-ink);
}

.approx-answer-review-status {
  font-size: 12px;
  font-weight: 700;
  color: var(--hub-muted);
}

.approx-answer-review-prompt {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--hub-ink);
  word-break: break-word;
}

.approx-answer-review-conclusion {
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
  color: var(--hub-muted);
}