.math-course-seo-intro {
  margin: 0.65rem 0 0;
  max-width: 42rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--cc-muted, #64748b);
}

.math-course-seo-intro p {
  margin: 0 0 0.5rem;
}

.math-course-seo-intro p:last-child {
  margin-bottom: 0;
}

.math-course-note {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  background: var(--cc-surface-2, #fff);
  overflow: auto;
}

.math-course-note__label {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cc-muted);
}

.math-course-note__passage {
  margin: 0;
  padding: 0.9rem 1rem;
  border-radius: var(--cc-radius, 12px);
  border: 1px solid var(--cc-border);
  background: var(--cc-surface);
  font-size: 1.05rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.math-course-note__field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--cc-muted);
}

.math-course-note__field textarea {
  width: 100%;
  min-height: 7rem;
  resize: vertical;
  border-radius: 10px;
  border: 1px solid var(--cc-border);
  background: transparent;
  color: var(--cc-text);
  font: inherit;
  padding: 0.7rem 0.8rem;
}

.math-course-note__empty {
  margin: 0;
  color: var(--cc-muted);
  line-height: 1.45;
}

.calc-course-toc__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--cc-accent-soft);
  color: var(--cc-accent);
  font-weight: 700;
}