/* 공통 초기화 */
ul, li {
  list-style: none;
  margin: 0;
  padding: 0;
}
img {
  border: none;
  vertical-align: top;
}

/* 시설사진 섹션 메인 컨테이너 */
.DB_tab22 {
  position: relative;
  width: 1300px;
  margin: 0 auto;
}
.DB_tab22::after {
  content: "";
  display: block;
  clear: both;
}

/* 메인 이미지 영역 */
.DB_tab22 .DB_mask {
  position: relative;
  width: 600px;
  height: 600px;
  overflow: hidden;
  float: left;
}
.DB_tab22 .DB_mask .DB_img {
  position: relative;
}
.DB_tab22 .DB_mask .DB_img li {
  position: absolute;
  width: 600px;
  height: 600px;
}
.DB_tab22 .DB_mask .DB_info {
  position: absolute;
  bottom: 0;
  width: 100%;
  line-height: 30px;
  background: url('img/bg.png');
}
.DB_tab22 .DB_mask .DB_info li {
  font: 11px 돋움;
  color: #555;
  display: none;
  padding: 10px 5px;
}

/* 썸네일 목록 */
.DB_tab22 .DB_menu {
  float: left;
  margin-left: 10px;
  width: 660px;
  display: flex;
  flex-wrap: wrap;
}
.DB_tab22 .DB_menu li {
  box-sizing: border-box;
  width: 190px;
  height: 190px;
  float: left;
  border: 1px solid #ccc;
  cursor: pointer;
  margin-top: 12px;
  margin-right: 10px;
}
.DB_tab22 .DB_menu li img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.DB_tab22 .DB_menu li.DB_select {
  box-sizing: border-box;
  border: 5px solid #FFA267;
}
.DB_tab22 .DB_menu li.DB_select img {
  margin: 0;
}

/* 슬라이드 방향 버튼 위치 (옵션용) */
.DB_tab22 .DB_dir {
  position: absolute;
  top: 40%;
  margin-top: -30px;
  cursor: pointer;
}
.DB_tab22 .DB_prev {
  left: 10px;
}
.DB_tab22 .DB_next {
  right: 10px;
}

/* ✅ 반응형: 모바일 화면 대응 */
@media (max-width: 767.98px) {
  .DB_tab22 {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .DB_tab22 .DB_mask {
    width: 90vw;
    height: auto;
    float: none;
  }

  .DB_tab22 .DB_mask .DB_img li {
    position: relative;
    width: 100%;
    height: auto;
  }

  .DB_tab22 .DB_menu {
    width: 100%;
    margin-left: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    box-sizing: border-box;
  }

  .DB_tab22 .DB_menu li {
    width: calc(50% - 10px);  /* ✅ 2개씩 정확하게 */
    aspect-ratio: 1 / 1;      /* 정사각형 */
    margin-bottom: 10px;
    box-sizing: border-box;
  }

  .DB_tab22 .DB_menu li img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .DB_tab22 .DB_menu li.DB_select {
    border: 3px solid #FFA267;
  }

  .DB_tab22 .DB_mask .DB_info {
    font-size: 12px;
    line-height: 1.5;
  }
}