.flipbook-overlay {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.71);
    z-index: 2147483646 !important;
    opacity: 0;
    transition: opacity 0.3s ease-out;
}

.flipbook-wrapper {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    text-shadow: none;
    -webkit-border-radius: 4px;
    border-radius: 4px;
    background: #ffffff;
}

.flipbook-wrapper-transparent {
    width: 100%;
    height: 100%;
    background: none;
}

.flipbook-main-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    direction: ltr !important;
    scrollbar-color: rgba(130, 130, 130, 0.5) transparent;
    scrollbar-width: thin;
}

.flipbook-bookLayer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;

    cursor: -webkit-grab;
    cursor: grab;

    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.flipbook-page-html {
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

.flipbook-zoomLayer-inside {
    display: block;
    position: relative;
    background-size: contain;
    text-align: center;
}

.flipbook-zoomLayer-inside .flipbook-carousel-page {
    float: left;
}

.flipbook-book {
    display: block;
    position: relative;
}

.flipbook-page {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: translateZ(0px);
    will-change: transform;
    transform-style: preserve-3d;
}

.flipbook-page3 {
    position: absolute;
    background: #eee;
    will-change: transform;
    transform-style: preserve-3d;
    transform: rotateY(var(--page3-rotate-y, 0));
    transform-origin: 0 50%;
    -webkit-transform-origin: 0 50%;
}

.flipbook-page3-html {
    position: absolute;
    height: 1000px;
    transform-origin: 0 0;
    top: 0;
    left: 0;
}

.flipbook-page3-inner {
    overflow: hidden;
    width: 100%;
    height: 100%;
    position: absolute;
    will-change: opacity;
}

.flipbook-page3-inner-back {
    transform: scaleX(-1);
}

.flipbook-page3-bg {
    width: 100%;
    height: 100%;
    position: absolute;
}

.flipbook-page3-bg img {
    height: 100% !important;
}

.flipbook-page3 img {
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    height: 100%;
    margin: auto;
    position: absolute;
    transform-origin: 0 0;
    -webkit-transform-origin: 0 0;
    float: left;
    user-select: none;
    pointer-events: none;
    max-width: unset;
    width: unset;
}

.flipbook-page3 canvas {
    width: 100%;
    height: 100%;
}

.flipbook-page3::before {
    content: '';
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(0, 0, 0, 1);
    opacity: var(--page3-shadow-opacity, 0);
    will-change: opacity;
    transform: translateZ(0);
    z-index: 1;
    pointer-events: none;
}

.flipbook-page3-front {
    transform-origin: 0 50%;
    -webkit-transform-origin: 0 50%;
}

.flipbook-page3-back {
    transform-origin: 0% 50%;
    -webkit-transform-origin: 0% 50%;
}

.flipbook-page3-back .flipbook-page3-inner {
    transform: rotateY(180deg);
}

.flipbook-book3 {
    display: block;
    position: relative;
}

.flipbook-book-webgl {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.flipbook-center-container3 {
    position: relative;
    will-change: transform;
    border: none;
}

.flipbook-page-htmlContent {
    transform-origin: 0 0;
    z-index: 50;
    position: absolute;
}

.flipbook-page-html video,
.flipbook-page-html iframe {
    max-width: initial;
}

.flipbook-book canvas {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 50;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
}

.flipbook-page img {
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
}

/* ... (full CSS from example copied here; truncated for brevity in this tool message) ... */