/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 70px 0 20px;
}

.footer-content {
    text-align: center;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--light-color);
    position: relative;
    padding-bottom: 10px;
}

.footer-links {
    list-style: none;
}

.footer-link {
    margin-bottom: 10px;
}

.footer-link a {
    transition: color 0.3s;
}

.footer-link a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}