.gallery-sticky { position: sticky; top: 20px; z-index: 10; }
    
    .main-photo-frame {
        background: #fff;
        border-radius: 20px;
        padding: 40px;
        text-align: center;
        border: 1px solid #f0f0f0;
        margin-bottom: 20px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.05);
        height: 600px; 
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
    }
    .main-photo-frame img { width: 100%; height: 100%; object-fit: contain; max-width: 450px; transition: opacity 0.3s; }
    
    .selected-device-preview {
        position: absolute;
        bottom: 20px;
        right: 20px;
        width: 130px;
        height: 130px;
        background: #fff;
        border: 1px solid #e1e1e1;
        border-radius: 16px;
        padding: 10px;
        display: none;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        box-shadow: 0 10px 40px rgba(0,0,0,0.12);
        z-index: 20;
        animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }
    @keyframes popIn { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }
    
    .selected-device-preview img { width: 100%; height: 80px; object-fit: contain; margin-bottom: 8px; }
    .selected-device-preview span { font-size: 10px; font-weight: 800; color: #0056b3; text-transform: uppercase; letter-spacing: 0.5px; }

    .thumbs-row { display: flex; gap: 15px; justify-content: center; }
    .thumb-btn { width: 80px; height: 80px; border-radius: 12px; border: 2px solid transparent; cursor: pointer; padding: 5px; background: #f9f9f9; transition: 0.2s; }
    .thumb-btn.active, .thumb-btn:hover { border-color: var(--tyent-blue); background: #fff; }
    .thumb-btn img { width: 100%; height: 100%; object-fit: contain; border-radius: 6px;}

    .kyk-cert-section {
        padding: 60px 0;
        background: #fff;
        overflow: hidden;
        font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        border-top: 1px solid #f0f0f0;
    }

    .kyk-cert-header {
        text-align: center;
        margin-bottom: 40px;
        padding: 0 20px;
    }

    .kyk-cert-title {
        font-size: 32px;
        font-weight: 900;
        color: #1a1a1a;
        margin-bottom: 10px;
    }
    
    .kyk-cert-sub {
        font-size: 14px;
        color: #666;
        text-transform: uppercase;
        letter-spacing: 1px;
        font-weight: 700;
    }

    .kyk-marquee-wrapper {
        display: flex;
        overflow: hidden;
        user-select: none;
        mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
        -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
        padding: 20px 0;
    }

    .kyk-marquee-track {
        display: flex;
        gap: 30px;
        animation: cert-scroll 80s linear infinite; 
        width: max-content;
    }
    
    .kyk-marquee-wrapper:hover .kyk-marquee-track {
        animation-play-state: paused;
    }

    @keyframes cert-scroll {
        from { transform: translateX(0); }
        to { transform: translateX(-25%); } 
    }

    .kyk-cert-card {
        background: #fff;
        border: 1px solid #eee;
        border-radius: 12px;
        padding: 20px 15px;
        width: 160px;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        box-shadow: 0 5px 15px rgba(0,0,0,0.03);
        transition: 0.3s;
        flex-shrink: 0;
    }

    .kyk-cert-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 70, 213, 0.1);
        border-color: #0046d5;
    }

    .kyk-cert-img {
        height: 60px;
        width: 100%;
        object-fit: contain;
        margin-bottom: 15px;
        opacity: 0.85;
        transition: 0.3s;
    }
    
    .kyk-cert-card:hover .kyk-cert-img {
        opacity: 1;
        transform: scale(1.05);
    }

    .kyk-cert-name {
        font-size: 14px;
        font-weight: 800;
        color: #1a1a1a;
        margin-bottom: 5px;
        line-height: 1.2;
    }
    
    .kyk-cert-desc {
        font-size: 11px;
        color: #777;
        line-height: 1.3;
    }

    @media (max-width: 768px) {
        .kyk-cert-section { padding: 40px 0; }
        .kyk-cert-card { width: 140px; padding: 15px 10px; }
        .kyk-cert-img { height: 50px; }
        .kyk-cert-name { font-size: 12px; }
        .kyk-cert-desc { font-size: 10px; }
        .kyk-marquee-track { animation-duration: 40s; }
    }