.histoire-layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.histoire-toc {
  position: sticky;
  top: 5.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.histoire-toc button {
  text-align: left;
  border: none;
  background: none;
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  color: var(--brown-700);
  font-family: var(--serif);
  font-size: 0.95rem;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}

.histoire-toc button:hover {
  background: var(--cream-dark);
}

.histoire-toc button.active {
  color: var(--gold);
  border-left-color: var(--gold);
  background: var(--cream-dark);
}

.histoire-content {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: clamp(1.6rem, 4vw, 3rem);
  max-width: 720px;
}

.histoire-content h2 {
  font-size: 1.5rem;
  margin-bottom: 1.4rem;
}

.histoire-content h3 {
  font-size: 1.1rem;
  color: var(--gold);
  margin-top: 1.8rem;
  margin-bottom: 0.7rem;
}

.histoire-content p {
  line-height: 1.85;
  color: var(--brown-800);
  margin: 0 0 1.1rem;
  font-size: 1.01rem;
}

.histoire-doc { display: none; }
.histoire-doc.active { display: block; }

@media (max-width: 760px) {
  .histoire-layout {
    grid-template-columns: 1fr;
  }
  .histoire-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .histoire-toc button {
    border-left: none;
    border-bottom: 2px solid transparent;
  }
  .histoire-toc button.active {
    border-bottom-color: var(--gold);
  }
}