body {
    width: 100vw;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    background: #000;
    overflow-y: auto;
    position: relative;
}

.background-image {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    animation: moveInBottom 600ms ease-in-out forwards;
    z-index: 0;
}

.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    padding: 10px 20px;
    font-family: Arial, sans-serif;
    font-size: 16px;
    color: #FFF;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    cursor: pointer;
    z-index: 1000;
}

.back-button:hover {
    background: rgba(0, 0, 0, 0.9);
}

@keyframes moveInBottom {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes moveOut {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100%);
        opacity: 0;
    }
}

/* 响应式设计 */
@media only screen and (max-width: 600px) {
    .background-image {
        max-width: 100%;
    }

    .back-button {
        top: 10px;
        left: 10px;
        font-size: 14px;
    }
}

/* Cursor styles handled by global style.css */