/* ========== 页脚 ========== */

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
    margin-top: 4rem;
    transition: all var(--transition-duration) var(--transition-timing);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    color: var(--text-secondary);
}

/* 页脚导航区域 */
.footer-navigation {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
}

.footer-nav-column {
    text-align: left;
}

.footer-nav-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-nav-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-duration) var(--transition-timing);
    position: relative;
    padding-left: 0.5rem;
}

.footer-nav-link::before {
    content: '→';
    position: absolute;
    left: 0;
    opacity: 0;
    transition: opacity var(--transition-duration) var(--transition-timing),
        transform var(--transition-duration) var(--transition-timing);
    transform: translateX(-8px);
}

.footer-nav-link:hover {
    color: var(--accent-color);
    padding-left: 1rem;
}

.footer-nav-link:hover::before {
    opacity: 1;
    transform: translateX(0);
}

/* 页脚底部区域 */
.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
}

.footer-copyright {
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.footer-copyright p {
    margin: 0;
    color: var(--text-secondary);
}

.icp-info {
    font-size: 0.8rem;
}

.icp-info p {
    margin: 0.3rem 0;
    color: var(--text-secondary);
    line-height: 1.4;
}

.icp-info a {
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.icp-info a:hover {
    color: inherit;
}

.icp-info a:visited {
    color: inherit;
}