/* 页脚样式 */
footer {
    background-color: rgba(51, 51, 51, 0.5); /* 半透明背景 */
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    padding: 6px 0;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    font-size: 14px;
    min-height: 20px; /* 保证最低高度 */
    max-height: 32px; /* 高度上限 */
    z-index: 2000;
    text-align: center;
    line-height: 1.4; /* 行高适配多行文字 */
}

.footer-content {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
    gap: 8px;
}

/* 移动端自动换行 */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
    }

    .line-1 {
        margin-bottom: -12px;
    }
}

.footer-line {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px; /* 8px 间距 */
}