/* ---------- 页脚 ---------- */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    padding: 12px 40px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-text {
    font-size: 12px;
    color: var(--muted);
    display: flex;
    justify-content: space-between;
}

#progress {
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    position: relative;
}

#progress span {
    position: absolute;
    inset: 0;
    width: 0%;
    background: var(--accent);
    transition: width .4s ease;
}

/* 响应式：页脚 */
@media (max-width: 480px) {
    .footer-text {
        flex-direction: column;
        gap: 4px;
    }
}