.lab-gallery-section {
            padding: 60px 20px;
            background: var(--bg-color);
            transition: background-color 0.3s ease;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 40px;
            position: relative;
            text-transform: uppercase;
        }

        .section-title::after {
            content: '';
            width: 60px;
            height: 4px;
            background: #1c3b70;
            display: block;
            margin: 10px auto 0;
            border-radius: 2px;
        }

        .section-intro {
            max-width: 800px;
            margin: 30px auto 50px auto;
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-muted);
            font-weight: 500;
            text-align: center;
        }

        /* Lab group styles */
        .lab-group {
            margin-bottom: 50px;
        }

        .lab-title {
            font-size: 1.35rem;
            color: var(--primary-color);
            max-width: 1200px;
            margin: 0 auto 20px auto;
            text-align: left;
            text-transform: none;
            letter-spacing: 0.3px;
            font-weight: 700;
            padding-left: 15px;
            border-left: 4px solid var(--accent-color);
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 2rem;
                margin-bottom: 20px;
            }

            .section-intro {
                font-size: 1rem;
                margin-bottom: 30px;
                padding: 0 10px;
            }

            .lab-title {
                font-size: 1.15rem;
                padding-left: 10px;
                margin-bottom: 15px;
            }
        }

        /* Images grid */
        .lab-images {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .lab-images img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: 10px;
            cursor: pointer;
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), filter 0.3s ease;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--card-border);
            filter: brightness(95%);
        }

        .lab-images img:hover {
            transform: scale(1.05);
            box-shadow: var(--card-shadow-hover);
            filter: brightness(105%);
        }

        /* Fullscreen overlay */
        #fullscreenOverlay {
            display: none;
            position: fixed;
            z-index: 9999;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            justify-content: center;
            align-items: center;
        }

        #fullscreenOverlay img {
            max-width: 90%;
            max-height: 90%;
            border-radius: 10px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }