* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #fff;
}

/* 顶部图片样式 */
.top-image {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.top-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 悬浮按钮样式 */
.floating-button {
    position: fixed;
    bottom: 17.3vw;
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    background-color: transparent;
}

.floating-button img {
    height: 9.56vw;
    min-height: 59px;
    max-height: 169px;
    width: auto;
    display: block;
    animation: pulse 2s ease-in-out infinite;
    object-fit: contain;
}

/* 循环缩小放大动画 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.9);
    }
}