body {
    margin: 0;
    padding: 0;
    background: radial-gradient(circle at center, #1e3c72 0%, #2a5298 50%, #061161 100%);
    height: 100vh;
    width: 100vw;
    overflow: hidden; 
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    z-index: 10;
}

#book {
    box-shadow: 0 0 80px rgba(0,0,0,0.6);
}

/* Эффект корешка (разделительная линия между страницами) */
#book::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 5;
    transform: translateX(-50%);
    pointer-events: none;
}

.my-page {
    background-color: #fff;
    overflow: hidden;
}

.page-content img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- ОЧЕНЬ МНОГО СНЕГА --- */
.snow-container {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    z-index: 1;
}

.snow, .snow-extra, .snow-fast {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
}

.snow {
    background-image: radial-gradient(3px 3px at 100px 50px, #fff, transparent), 
                      radial-gradient(4px 4px at 400px 250px, #fff, transparent);
    background-size: 600px 600px;
    animation: snow-fall 12s linear infinite;
    opacity: 0.4;
}

.snow-extra {
    background-image: radial-gradient(5px 5px at 200px 100px, #fff, transparent), 
                      radial-gradient(4px 4px at 500px 450px, #fff, transparent);
    background-size: 800px 800px;
    animation: snow-fall 18s linear infinite;
    opacity: 0.3;
}

.snow-fast {
    background-image: radial-gradient(2px 2px at 50px 200px, #fff, transparent), 
                      radial-gradient(3px 3px at 350px 500px, #fff, transparent);
    background-size: 400px 400px;
    animation: snow-fall 8s linear infinite;
    opacity: 0.2;
}

@keyframes snow-fall {
    from { transform: translateY(-800px); }
    to { transform: translateY(0); }
}