/* 页脚样式 */
.footer {
    background: #2d3748;
    color: #e2e8f0;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.footer-section h4 {
    color: #cbd5e0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: #a0aec0;
    line-height: 1.6;
    margin-bottom: 0.8rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #a0aec0;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.footer-section ul li a i {
    font-size: 0.9rem;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #718096;
    margin: 0;
    font-size: 0.9rem;
}

/* 社交媒体链接 */
.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #4a5568;
    color: #a0aec0;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* 联系信息样式 */
.contact-info-footer {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-info-footer .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.8rem 0;
}

.contact-info-footer .contact-item i {
    color: #667eea;
    font-size: 1.1rem;
    width: 20px;
    margin-top: 0.2rem;
}

.contact-info-footer .contact-item span {
    color: #a0aec0;
    line-height: 1.5;
}

/* ICP备案信息 */
.icp-info {
    background: #1a202c;
    padding: 1rem 0;
    text-align: center;
    border-top: 1px solid #2d3748;
}

.icp-info p {
    color: #718096;
    margin: 0;
    font-size: 0.85rem;
}

.icp-info a {
    color: #667eea;
    text-decoration: none;
}

.icp-info a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-section:first-child {
        grid-column: 1 / -1;
        text-align: center;
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-section:first-child {
        grid-column: auto;
        margin-bottom: 0;
    }
    
    .contact-info-footer .contact-item {
        justify-content: center;
        text-align: left;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .footer-content {
        gap: 1.5rem;
    }
    
    .footer-section h3 {
        font-size: 1.2rem;
    }
    
    .footer-section h4 {
        font-size: 1rem;
    }
    
    .contact-info-footer .contact-item {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        text-align: center;
    }
    
    .contact-info-footer .contact-item i {
        margin-top: 0;
    }
}