.sitewide-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(0, 0, 0, 0.55);
}

.sitewide-popup-box {
    position: relative;
    width: min(720px, 100%);
    max-height: min(80vh, 800px);
    overflow: auto;
    background: #fff;
    border-radius: 12px;
    padding: 20px 20px 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,.3);
}

.sitewide-popup-close {
    position: absolute;
    top: 8px;
    right: 10px;
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 18px;
    background: transparent;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

.sitewide-popup-content img {
    max-width: 100%;
    height: auto;
}