.history-container {
      margin: auto;
    }

    .year-tabs {
      display: flex;
      gap: 10px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }

    .year-tab {
      padding: 10px 20px;
      background-color: #e0e0e0;
      color: #333;
      border-radius: 4px;
      font-weight: bold;
      cursor: pointer;
    }

    .year-tab.active {
      background-color: #005bac;
      color: #fff;
    }

    .history-year {
      font-size: 48px;
      font-weight: 700;
      color: #005bac;
      margin-bottom: 20px;
    }

    .history-list {
      list-style: none;
      padding: 0;
    }

    .history-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 10px;
      font-size: 15px;
    }
 
    .history-item span {
      width: 40px;
      font-weight: bold;
      color: #333;
    }

    .history-item p {
      margin: 0;

        margin-left: 10px;
      line-height: 1.5;
    }
  

    /* 건강보건 */
    .ebooks img{    filter: grayscale(1);}
    .accordion-container {
      max-width: 800px;
      margin: 0 auto;
      background: #fff;
      border: 1px solid #ddd;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    .accordion-title {
      background-color: #005bac;
      color: #fff;
      padding: 15px 20px;
      font-size: 18px;
      font-weight: bold;
      border-radius: 8px 8px 0 0;
    }

    .accordion-item {
      border-top: 1px solid #e0e0e0;
    }

    .accordion-header {
      padding: 15px 20px;
      cursor: pointer;
      font-weight: bold;
      background-color: #f4f6f9;
      transition: background 0.3s;
      position: relative;
    }

    .accordion-header::after {
      content: '＋';
      position: absolute;
      right: 20px;
      font-size: 18px;
      transition: transform 0.3s;
    }

    .accordion-header.active::after {
      content: '－';
    }

    .accordion-content {
      display: none;
      padding: 15px 20px;
      background-color: #fff;
      font-size: 15px;
      line-height: 1.6;
      color: #333;
    }

    .accordion-content ul {
      margin: 0;
      padding-left: 20px;
    }




    /* 반응형 */
    @media (max-width: 950px) {
      .history-year {
        font-size: 32px;
      }

      .history-item {
        font-size: 14px;
      }

      .year-tabs {
        justify-content: center;
      }

            .accordion-title {
        font-size: 16px;
      }
      .accordion-header,
      .accordion-content {
        font-size: 14px;
      }
    }

     /* 레이아웃: 왼쪽 이북, 오른쪽 내용 */
  .layout{display:grid;grid-template-columns:min(52vw,640px) 1fr;
    gap:28px;align-items:flex-start;margin:40px auto;
    max-width:1200px;padding:0 16px;}
  /* .left{position:sticky;top:20px} */
  .left{
    width: 70%;
    border: 1px solid #ddd;
  }
  /* .right{min-height:60vh} */

  /* flipbook 컨테이너 */
  .flipbook{
    box-shadow:0 8px 30px rgba(0,0,0,.12);border-radius:10px;overflow:hidden;background:#f7f7f7;}
  /* 각 페이지 기본 스타일 */
  .flipbook .page{
    background:#fff;display:flex;
    align-items:center;justify-content:center;font:600 18px/1.4 system-ui,apple sd gothic neo,Segoe UI,sans-serif;}
  .flipbook .page img{
    display:block;width:100%;height:100%;object-fit:cover;}
  /* 페이지 테두리 & 안쪽 그림자 */
  .flipbook .page{
    border:1px solid #e5e7eb;box-sizing:border-box;}

  @media (max-width: 900px){
 .layout{
    grid-template-columns: 1fr;
 }
    
}