/* 通用幻灯片样式 */
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    height: 100vh;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: flex-start; /* 从顶部开始显示 */
    justify-content: center;
    background-color: #f9fafb;
    overflow-y: auto; /* 允许滚动 */
}

.slide-content {
    max-width: 1200px;
    animation: fadeIn 0.8s ease-in-out;
    padding: 40px 20px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}