/* 底部备案号 + 版权 优雅样式 */
.site-footer {
    margin-top: 60px;
    padding: 24px 16px;
    text-align: center;
    font-size: 13px;
    color: var(--muted);
    border-top: 1px solid var(--border);
}
.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.site-footer p {
    margin: 0;
    line-height: 1.5;
}
.beian-link {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s ease;
}
.beian-link:hover {
    color: var(--primary);
    text-decoration: underline;
}