#container_title{
    display: none;
}
.sub-visual {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
  }
  .sub-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .sub-title {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    color: #fff;
    text-align: center;
  }
  .sub-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
  }
  
  .sub-tab-menu {
    background: #fff;
    border-bottom: 1px solid #e1e1e1;
  }
  .sub-tab-menu ul {
    display: flex;
    justify-content: center;
    max-width: 1000px;
    margin: 0 auto;
  }
  .sub-tab-menu ul li {
    list-style: none;
  }
  .sub-tab-menu ul li a {
    display: block;
    padding: 16px 30px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
  }
  .sub-tab-menu ul li.active a,
  .sub-tab-menu ul li a:hover {
    color: #4A6FA5;
    font-weight: 900;
    border-bottom: 2px solid #4A6FA5;
  }




  /* 인사말 */
  .greeting-wrap {
    max-width: 1200px;
    margin: 60px auto;
    padding: 20px;
    display: flex;
    gap: 40px;
    align-items: flex-start;
    flex-wrap: wrap;
  }
  
  .greeting-image {
    flex: 1;
    min-width: 300px;
    position: relative;
    border: 3px solid rgb(0, 174, 255);
  }
  .greeting-image img {
    width: 100%;
    height: auto;
    display: block;
  }
  
  .greeting-content {
    flex: 2;
    min-width: 300px;
  }
  .greeting-content>div{
    margin-bottom: 20px;
  }
  .greeting-content h4 {
    color: #4A6FA5;
    font-weight: 600;
    margin-bottom: 10px;
  }
  .greeting-content h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 20px;
    margin-top: 40px;
  }
  .greeting-content h2.fir{
    margin-top: 0;
  }
  .greeting-content h2 strong {
    color: #111;
  }
  .greeting-content p {
    font-size: 1rem;
    color: #444;
  }
  .greeting-thanks {
    margin-top: 30px;
    font-weight: bold;
    color: #000;
  }
  p.bullet{
    padding: 10px 0 ;
  }
  p.bullet::before {
    content: "•";
    color: #333;
    margin-right: 8px;
    font-weight: bold;
  }



  /* 연혁 */
  .history-wrap {
    max-width: 1000px;
    margin: 80px auto;
    padding: 20px;
  }
  
  .history-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 60px;
    position: relative;
  }
  
  .history-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }
  
  .history-year-block {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    position: relative;
  }
  
  .year {
    font-size: 2rem;
    font-weight: 700;
    min-width: 100px;
    color: #004080;
  }
  
  .history-items p {
    margin: 8px 0;
    position: relative;
    padding-left: 20px;
  }

.img_box{
    width: 100%;
    display: flex;
    margin-bottom: 80px;
}
.img_box>div{
    width: 300px;
    border: 1px solid #ddd;
    padding: 5px;
}
  /* product */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
  }

  .product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
  }

  .product {
    border: 1px solid #eee;
    border-radius: 12px;
    overflow: hidden;
    transition: 0.3s;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    position: relative;
  }

  .product:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  }

  .product img {
    width: 100%;
    height: auto;
    display: block;
  }

  .product-content {
    padding: 20px;
    position: absolute;
    top: 0;
    z-index: 50;
  }

  .product-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #222;
  }

  .product-content p {
    font-size: 15px;
    color: #555;
  }

  .box{
    margin-top: 80px;
  }


  /* contact */

  .contact-info {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
  }
  
  .section-title {
    font-size: 32px;
    margin-bottom: 30px;
    position: relative;
  }
  
  .section-title::before {
    content: '···';
    display: block;
    color: #4A6FA5;
    font-size: 24px;
    margin-bottom: 8px;
  }
  
  .info-boxes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
  
  .info-box {
    background: #1c1c1c;
    color: #fff;
    padding: 30px 20px;
    width: 300px;
    border-radius: 10px;
    text-align: center;
    transition: 0.3s;
  }
  
  .info-box .icon {
    font-size: 40px;
    margin-bottom: 15px;
  }
  
  .info-box.highlight {
    background: #4A6FA5;
  }
  
  .info-box h3 {
    margin-bottom: 10px;
    font-size: 18px;
    font-weight: bold;
  }
  
  .info-box p {
    font-size: 15px;
    line-height: 1.6;
  }

  


  
  /* 반응형 */
  @media (max-width: 768px) {
    .container {
        padding: 20px 15px;
      }

    .history-year-block {
      flex-direction: column;
    }
    .year {
      font-size: 1.5rem;
      margin-bottom: 10px;
    }
    .greeting-wrap {
        flex-direction: column;
      }
      .greeting-content h2 {
        font-size: 1.4rem;
      }

      .info-boxes {
        flex-direction: column;
        align-items: center;
      }
    
      .info-box {
        width: 90%;
      }


  }