/* 底部备案信息 */
.footer {
    flex-shrink: 0; /* 禁止footer收缩 */
    font-size: 12px;
    color: #999;
    text-align: center;
    width: 100%;
    padding: 20px 0;
    margin-top: 20px; /* 添加适当间距 */
}

/* 备案链接样式 */
a.beian-link {
    color: #999;
    text-decoration: none;
}

a.beian-link:hover {
    color: #666;
    text-decoration: underline;
}