/* ==========================================
   専門性とやりがいページ
   ========================================== */

.expertise-page {
  background: #F5F3ED;
}

/* 目次セクション */
.toc-section {
  background: linear-gradient(135deg, #E89B6F 0%, #D88A5E 100%);
  padding: 40px;
  border-radius: 12px;
  margin-bottom: 60px;
  color: #fff;
  position: relative;
}

.toc-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 20px;
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-list li {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list li::before {
  content: '↓';
  font-size: 14px;
}

.toc-list a {
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  transition: opacity 0.3s;
}

.toc-list a:hover {
  opacity: 0.7;
}

/* コンテンツセクション */
.content-section {
  margin-bottom: 80px;
}

.section-title {
  font-size: 24px;
  font-weight: 400;
  color: #333;
  margin: 0 0 30px;
  padding-bottom: 15px;
  border-bottom: 3px solid #E89B6F;
  position: relative;
}

.section-title::before {
  content: '◆';
  color: #E89B6F;
  margin-right: 10px;
}

.subsection {
  margin-bottom: 50px;
  background: #fff;
  padding: 40px;
  border-radius: 10px;
}

.subsection-title {
  font-size: 20px;
  font-weight: 700;
  color: #333;
  margin: 0 0 20px;
}

.subsection-text {
  font-size: 15px;
  line-height: 1.9;
  color: #333;
  margin: 0 0 15px;
}

/* ナビゲーションカード */
.nav-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 60px;
}

.nav-card {
  background: #fff;
  padding: 30px 25px;
  border-radius: 8px;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.3s;
  border: 1px solid #E0E0E0;
  position: relative;
}

.nav-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.nav-card.active {
  background: #E89B6F;
}

.nav-card.active .nav-card-content {
  color: #fff;
}

.nav-card-content {
  display: flex;
  align-items: center;
  gap: 15px;
  color: #333;
}

.nav-card-number {
  font-size: 18px;
  font-weight: 700;
}

.nav-card-title {
  font-size: 16px;
  font-weight: 700;
}

.nav-card-arrow {
  font-size: 20px;
  color: #333;
}

.nav-card.active .nav-card-arrow {
  color: #fff;
}

/* レスポンシブ対応 */
@media screen and (max-width: 768px) {
  .toc-section {
    padding: 30px 25px;
  }

  .nav-cards {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .section-title {
    font-size: 20px;
  }

  .subsection {
    padding: 30px 25px;
    margin-bottom: 40px;
  }

  .subsection-title {
    font-size: 18px;
  }

  .subsection-text {
    font-size: 14px;
  }
}

@media screen and (max-width: 480px) {
  .toc-section {
    padding: 25px 20px;
  }

  .section-title {
    font-size: 18px;
  }

  .subsection {
    padding: 25px 20px;
    margin-bottom: 30px;
  }

  .subsection-title {
    font-size: 16px;
  }

  .nav-card {
    padding: 20px 18px;
  }

  .nav-card-number {
    font-size: 16px;
  }

  .nav-card-title {
    font-size: 14px;
  }
}