.footer {
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
    padding: 60px 0 24px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid #e2e8f0;
}

.footer-brand {
    grid-column: span 1;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo-img {
    height: 36px;
    width: auto;
}

.footer-logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #1e293b;
}

.footer-description {
    font-size: 14px;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #e2e8f0;
    border-radius: 8px;
    color: #64748b;
    font-size: 16px;
    transition: all 0.3s ease;
}

.footer-social-link:hover {
    background-color: #0066FF;
    color: #ffffff;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-link {
    font-size: 13px;
    color: #64748b;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: #0066FF;
}

.footer-bottom {
    margin-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    font-size: 12px;
    color: #94a3b8;
}

.footer-copyright .xf-PicBlackbox {
    color: #0066FF;
    cursor: pointer;
    text-decoration: none;
}

.footer-copyright .xf-PicBlackbox:hover {
    text-decoration: underline;
}

.footer-filing {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #94a3b8;
}

.footer-filing a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #0066FF;
    text-decoration: none;
}

.footer-filing img {
    height: 16px;
    width: auto;
}

.footer-filing span {
    color: #94a3b8;
}

@media screen and (max-width: 1024px) {
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

@media screen and (max-width: 768px) {
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
        text-align: center;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .footer-filing {
        flex-wrap: wrap;
        justify-content: center;
    }
}