/* Footer Styles */
.footer {
    background-color: var(--dark-grey);
    color: #a0a0a0;
    padding: 40px 0 20px;
    font-size: 14px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
}

.footer-column {
    flex: 0 1 auto;
    margin-right: 40px;
    /* 保证列在宽屏下不会过窄 */
}

.footer-column:last-child {
    margin-right: 0px;
}

.footer-column h3 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 20px;
    font-weight: 600;
}

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

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: #a0a0a0;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #ffffff;
}

.footer-contact-info p {
    margin-bottom: 8px;
    line-height: 1.6;
    color: #ccc;
    /* 提高文本对比度 */
}

.footer-contact-info strong {
    color: #ffffff;
}

.qr-container {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.qr-item {
    text-align: center;
    flex: 1;
    min-width: 80px;
}

.qr-item img {
    width: 120px;
    height: 120px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.qr-item p {
    font-size: 12px;
    color: #a0a0a0;
    line-height: 1.4;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: #888;
    font-size: 12px;
    line-height: 1.5;
}

.footer-icon {
    font-size: 12px;
}

/* 统一备案信息链接的颜色 */
.footer-bottom a {
    color: #ffffff80;
    margin: 0 6px;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #aaa;
    /* 悬停时稍微变亮 */
}

.footer-bottom-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.beian-icon {
    height: 16px;
    margin: 0 6px;
    vertical-align: middle;
    width: 16px;
}

.contact-img{
    display: flex;
    color: #ccc;
}
.contact-img .contact-img-item > a > img{
    width: 22px;
}


/* 响应式设计 */
@media (max-width: 1024px) {
    .footer-content {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 30px 0px;
    }

    .footer-content {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 20px;
    }

    .footer-column {
        flex: 1 1 45%;
        /* 每行两列，留出间隙 */
        min-width: 0;
        /* 重置min-width */
        text-align: left;
        margin-bottom: 20px;
    }

    .footer-column.contact .footer-contact-info p,
    .contact-img {
        color: #f5f5f5 !important;
        font-size: 14px;
    }

    .footer-contact-info {
        text-align: left;
    }

    .qr-container {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .qr-item {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .qr-item img {
        width: 84px;
        height: 84px;
    }

    .footer-bottom p {
        font-size: 11px;
        line-height: 1.6;
        padding: 0 10px;
    }

    .footer-bottom-content {
        display: block;
    }
}

@media (max-width: 480px) {
    .footer-column {
        flex: 1 1 50%;
        /* 保持两列布局 */
        min-width: 150px;
        text-align: left;
    }

    .footer-contact-info,
    .qr-container {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0px;
    }
    
    .qr-item img {
        width: 84px;
        height: 84px;
    }
}

@media (max-width: 900px) {
    .footer .footer-contact-info {
        display: block !important;
    }
}

/* Side Widget */
.side-widget {
    position: fixed;
    right: 0;
    bottom: 80px;
    z-index: 999;
}

.side-widget img {
    width: 60px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.side-widget img:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .side-widget {
        right: 0;
        bottom: 60px;
    }

    .side-widget img {
        width: 50px;
    }
}