* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Noto Sans KR', sans-serif; }
        body { color: #333; background-color: #f8fafc; line-height: 1.6; overflow-x: hidden; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* 1. 상단 네비게이션 헤더 */
        header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
        .header-top { display: flex; justify-content: flex-end; gap: 20px; padding: 10px 0; font-size: 0.85rem; color: #64748b; border-bottom: 1px solid #f1f5f9; }
        .header-top > div:not(.header-welcome), .header-top > a { display: inline-flex; align-items: center; gap: 7px; min-height: 34px; padding: 7px 14px; border: 1px solid #dbeafe; border-radius: 999px; background: #f8fbff; color: #1e3a8a; font-size: 0.92rem; font-weight: 700; line-height: 1; }
        .header-top > div:not(.header-welcome) i, .header-top > a i { color: #0284c7; }
        .header-top > a:hover { border-color: #7dd3fc; background: #e0f2fe; color: #0369a1; }
        .header-welcome { margin-right: auto; color: #0284c7; font-weight: 500; }
        .header-main { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; position: relative; }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 700; color: #0284c7; white-space: nowrap; }
        .logo i { font-size: 1.8rem; }
        .logo span { font-size: 0.9rem; color: #64748b; display: block; font-weight: 400; }
        .nav-menu { display: flex; gap: 24px; }
        .nav-item { font-size: 1.05rem; font-weight: 500; color: #334155; transition: color 0.3s; padding: 5px 0; }
        .nav-item:hover, .nav-item.active { color: #0284c7; }
        .menu-toggle { display: none; font-size: 1.5rem; color: #334155; cursor: pointer; padding: 5px; }
        
        /* 서브페이지 배너 & LNB 탭 */
        .sub-banner { background: linear-gradient(rgba(30, 41, 59, 0.7), rgba(30, 41, 59, 0.7)), url('https://images.unsplash.com/photo-1519494026892-80bbd2d6fd0d?auto=format&fit=crop&w=1920&q=80') no-repeat center/cover; height: 220px; display: flex; align-items: center; color: #fff; }
        .sub-banner-content h2 { font-size: 2.2rem; font-weight: 700; margin-bottom: 8px; }
        .sub-banner-content p { font-size: 1rem; color: #cbd5e1; }
        .sub-nav-bar { background: #fff; border-bottom: 1px solid #e2e8f0; }
        .sub-nav-menu { display: flex; }
        .sub-nav-item { padding: 15px 30px; font-size: 1rem; font-weight: 500; color: #64748b; border-bottom: 3px solid transparent; transition: all 0.2s; text-align: center; }
        .sub-nav-item:hover, .sub-nav-item.active { color: #0284c7; border-bottom-color: #0284c7; background: #f8fafc; }
        
        /* 2. 시설안내 본문 섹션 */
        .facility-section { padding: 60px 0; background: #fff; }
        
        /* 고품격 텍스트 가이드 상단바 디자인 스타일링 */
        .facility-intro-box { text-align: center; max-width: 800px; margin: 0 auto 50px; padding: 25px 30px; border-radius: 12px; background: #f8fafc; border: 1px solid #e2e8f0; }
        .facility-title-tag { display: inline-block; padding: 4px 14px; background: #e0f2fe; color: #0284c7; font-size: 0.85rem; font-weight: 600; border-radius: 50px; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
        .facility-main-text { font-size: 1.15rem; color: #1e293b; font-weight: 500; word-break: keep-all; margin-bottom: 6px; }
        .facility-sub-text { font-size: 0.9rem; color: #64748b; }
        .facility-sub-text i { font-size: 0.8rem; margin-right: 4px; color: #94a3b8; }
        
        /* 8개 이미지 갤러리 그리드 프레임 */
        .facility-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
        .facility-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); transition: all 0.3s ease; cursor: pointer; }
        .facility-card:hover { transform: translateY(-5px); border-color: #0284c7; box-shadow: 0 10px 20px rgba(2, 132, 199, 0.1); }
        
        /* 이미지 썸네일 박스 */
        .facility-img-wrap { width: 100%; height: 360px; background: #f1f5f9; overflow: hidden; position: relative; }
        .facility-img-wrap img { width: 100% !important; height: 100% !important; object-fit: cover !important; transition: transform 0.5s ease; }
        .facility-card:hover .facility-img-wrap img { transform: scale(1.06); }
        
        /* 오버레이 돋보기 효과 */
        .img-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(2, 132, 199, 0.2); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s; }
        .img-overlay i { color: #fff; font-size: 2rem; background: rgba(0,0,0,0.4); padding: 15px; border-radius: 50%; }
        .facility-card:hover .img-overlay { opacity: 1; }
        
        /* 하단 시설 명칭 텍스트 */
        .facility-info { padding: 18px 20px; text-align: center; background: #fff; border-top: 1px solid #f1f5f9; }
        .facility-info h4 { font-size: 1.1rem; color: #1e293b; font-weight: 600; }

        /* 라이트박스 모달 팝업 레이아웃 */
        .lightbox-modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(15, 23, 42, 0.95); z-index: 2000; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s ease; }
        .lightbox-modal.active { display: flex; opacity: 1; }
        .lightbox-content { max-width: 85%; max-height: 85%; position: relative; display: flex; flex-direction: column; align-items: center; }
        .lightbox-img { max-width: 100%; max-height: 75vh; object-fit: contain; border-radius: 6px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); }
        .lightbox-caption { color: #fff; margin-top: 15px; font-size: 1.2rem; font-weight: 500; text-align: center; letter-spacing: 0.5px; }
        .lightbox-close { position: absolute; top: -45px; right: 0; color: #cbd5e1; font-size: 2.2rem; cursor: pointer; transition: color 0.2s; }
        .lightbox-close:hover { color: #fff; }
        
        /* 팝업 좌우 이동 화살표 */
        .lightbox-arrow { position: absolute; top: 50%; transform: translateY(-50%); color: #94a3b8; font-size: 3rem; cursor: pointer; padding: 10px 20px; transition: all 0.2s; user-select: none; }
        .lightbox-arrow:hover { color: #fff; }
        .arrow-left { left: -80px; }
        .arrow-right { right: -80px; }

        /* 3. 푸터 영역 */
        footer { background: #1e293b; color: #94a3b8; padding: 40px 0 30px; font-size: 0.85rem; }
        .footer-links { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 30px; border-bottom: 1px solid #334155; padding-bottom: 15px; }
        .footer-links a { color: #e2e8f0; font-weight: 500; transition: color 0.2s; }
        .footer-links a:hover { color: #0284c7; }
        .footer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
        .footer-logo { color: #fff; font-size: 1.3rem; font-weight: 700; margin-bottom: 15px; }
        .footer-info p { margin-bottom: 6px; }
        .footer-hours h4 { color: #fff; margin-bottom: 15px; font-size: 1rem; }
        .hours-list li { display: flex; justify-content: space-between; margin-bottom: 8px; }
        .footer-bottom { margin-top: 30px; border-top: 1px solid #334155; padding-top: 20px; }

        /* 반응형 해상도 조절 */
        @media (max-width: 1024px) {
            .facility-grid { grid-template-columns: repeat(2, 1fr); gap: 25px; }
            .facility-img-wrap { height: 300px; }
            .lightbox-arrow { font-size: 2.5rem; padding: 10px; }
            .arrow-left { left: -50px; } .arrow-right { right: -50px; }
        }
        @media (max-width: 768px) { 
            .header-top { display: none; } .menu-toggle { display: block; } 
            .nav-menu { display: none; flex-direction: column; position: absolute; top: 100%; left: -24px; right: -24px; background: #fff; border-top: 1px solid #e2e8f0; padding: 20px 44px; box-shadow: 0 10px 15px rgba(0,0,0,0.05); gap: 15px; z-index: 999; } 
            .nav-menu.active { display: flex; } 
            .sub-banner { height: 180px; text-align: center; } .sub-banner-content h2 { font-size: 1.8rem; } 
            .sub-nav-item { padding: 12px 15px; font-size: 0.95rem; } 
            .facility-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .lightbox-arrow { display: none; }
            .lightbox-content { max-width: 95%; }
        }
        @media (max-width: 480px) { 
            .logo { font-size: 1.1rem; } .sub-nav-menu { justify-content: center; width: 100%; } .sub-nav-item { padding: 12px 8px; font-size: 0.85rem; flex: 1; } 
            .facility-img-wrap { height: 260px; }
        }