body {
    /* 確保背景是透明的 */
    background-color: transparent;
    background: none;
    
    /* 移除預設的邊距和內距，以確保沒有多餘的空間 */
    margin: 0;
    padding: 0;
    
    /* 其他您原本的 body 樣式，請保留在下方 */
    display: flex;
    align-items: center;
    min-height: 500px;
    height: 100vh;
    justify-content: center;
    position: relative;
    box-sizing: border-box;
    pointer-events: none;
}

.bookshelf {
    max-width: 1000px;
    width: 80%;
    display: flex;
    justify-content: center;
    flex-shrink: 0;
    z-index: -1;
    position: relative;
    height: 0px;
    box-sizing: border-box;
    border-bottom: 16px solid #f3f3f3;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    pointer-events: all;
}

.bookshelf::before {
    content: "";
    position: absolute;
    top: 16px;
    background: linear-gradient(90deg, #fafafa 0%, #ffffff 100%);
    height: 26px;
    width: calc(100% + 40px);
    box-shadow: 0px -1px 6px rgba(0, 0, 0, 0.05),
    0px 4px 16px rgba(0, 0, 0, 0.25);
    z-index: 2;
}

.bookshelf::after {
    content: "";
    height: 80px;
    width: calc(100% + 40px);
    position: absolute;
    top: 42px;
    display: block;
    background: linear-gradient(
    180deg,
    #f3f3f3 0%,
    rgba(255, 255, 255, 0) 100%
    );
    clip-path: polygon(0% 0%, 100% 0%, 97% 100%, 3% 100%);
    z-index: -1;
}

.books {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10%;
    width: 80%;
    margin: auto;
    transform: translateY(-100%);
    padding: 0 0 2px;
    z-index: -1;
    position: relative;
    top: 10px;
}

.book {
    width: 100%;
    border-radius: 3px 0.5px 0.5px 3px;
    aspect-ratio: 115 / 180;
    position: relative;
}

.book::before,
.book::after {
    position: absolute;
    width: 100%;
    display: block;
    content: " ";
    transition: all 300ms ease-out;
    background: var(--bg-image) center center/cover no-repeat, #f3f3f3;
}

.book::before {
    height: 100%;
    box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.25),
    inset 2px 0px 2px 1px rgba(29, 27, 27, 0.2);
}

.book::after {
    height: 102%;
    filter: blur(10px);
    z-index: -1;
    opacity: 1;
}

.book:hover::before,
.book:hover::after {
    transition: transform 600ms cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.book:hover::before {
    transform: translate(0, -45%) skew(3deg, -3deg) scale(1.35);
}

.book:hover::after {
    transform: translate(0, -45%) skew(3deg, -3deg) scale(1.275);
}

.book:hover:nth-of-type(even)::before {
    transform: translate(0, -45%) skew(-3deg, 3deg) scale(1.35);
}

.book:hover:nth-of-type(even)::after {
    transform: translate(0, -45%) skew(-3deg, 3deg) scale(1.275);
}