/* ===================================================================== */
/* === Footer Styles (Extracted from index.css) ======================== */
/* ===================================================================== */

footer#main-footer {
    background-color: var(--color-footer-bg); /* 深色背景 */
    padding-top: 60px;
    color: var(--color-footer-text); /* 浅色文本 */
}

/* --- Footer Grid Layout --- */
.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr); /* 假设第一列宽一些，其他三列平均 */
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h4 {
    font-size: 16px;
    color: #ffffff;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
}

/* 强调标题下划线 */
.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    height: 3px;
    width: 40px;
    /* background-color: var(--color-primary); */
}

/* --- Footer Links --- */
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-col ul li a {
    color: var(--color-footer-text);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

/* --- Footer Info Column (First Column) --- */
.footer-info .footer-logo img {
    height: 30px;
    margin-bottom: 15px;
}

.footer-info .company-slogan {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.social-links a {
    color: #ffffff;
    font-size: 18px;
    margin-right: 15px;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--color-primary);
}


/* --- Footer Bottom (Copyright/Legal Links) --- */
.footer-bottom {
    padding: 15px 0;
    text-align: center;
    font-size: 13px;
    color: var(--color-footer-text);
}

.footer-bottom .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-bottom a {
    color: var(--color-footer-text);
    text-decoration: none;
    margin: 0 5px;
    transition: color 0.2s;
}

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


/* --- Responsive Adjustments --- */
@media (max-width: 992px) {
    .footer-grid {
        /* 调整为两列布局 */
        grid-template-columns: 1fr 1fr 1fr;
        padding: 0 20px 40px 20px;
    }

    .footer-info {
        /* 在两列布局中占据一行 */
        grid-column: 1 / -1; 
        text-align: center;
    }

    .footer-info .company-slogan {
        max-width: 80%;
        margin: 0 auto 20px auto;
    }

    .footer-col {
        padding: 0 10px;
    }

    /* 增加一个规则来防止第三和第四列换行 */
    .footer-col:nth-child(4) { 
        /* 解决方案 */
        grid-column: 2 / 3;
    }
    
    .footer-col:nth-child(5) { 
        /* 资源 */
        grid-column: 3 / 4;
    }
    
    /* 确保联系我们列不会跳到下一行 */
    .footer-col:nth-child(6) {
        grid-column: 1 / -1; /* 让它在下一行占据整行 */
        text-align: center;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        /* 调整为单列堆叠 */
        grid-template-columns: 1fr;
    }
    .footer-info {
        text-align: left;
    }
    .footer-info .company-slogan {
        max-width: 100%;
        margin: 0 0 20px 0;
    }
    
    .footer-col h4 {
        margin-top: 20px;
    }
}