/* 页脚区域样式 */
.footer {
    background-color: #163762;
    color: white;
    padding: 40px 0 0;
    width: 100%;
}

/* 页脚内容区域 */
.footer-content {
    display: flex;
    justify-content: space-around;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex-wrap: wrap;
}

/* 页脚区块样式 */
.footer-section {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
    padding: 0 15px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: #ffcc00;
}

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

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

.footer-section ul li a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

/* 页脚底部样式 */
.footer-bottom {
    text-align: center;
    padding: 20px 0;
    background-color: #0e2a4a;
    font-size: 14px;
}

/* 页脚底部链接样式 */
.footer-bottom a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: white;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-section {
        flex: 100%;
        margin-bottom: 20px;
    }
    
    .footer-section h3 {
        font-size: 18px;
    }
}

/* 新增页脚折叠相关样式 */
.footer-collapse-toggle {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-icon {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.footer-collapse-content {
    transition: all 0.3s ease;
    overflow: hidden;
}

/* 移动端样式 */
@media (max-width: 768px) {
    .footer-section {
        padding: 0;
        margin-bottom: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .footer-section h3 {
        padding: 15px 20px;
        margin-bottom: 0;
    }
    
    .footer-section h3::after {
        display: none;
    }
    
    .footer-collapse-content {
        max-height: 0;
        opacity: 0;
        padding: 0 20px;
    }
    
    .footer-collapse-content.active {
        max-height: 500px;
        opacity: 1;
        padding: 0 20px 15px;
    }
    
    .footer-collapse-content li {
        padding: 8px 0;
    }
    
    .toggle-icon.active {
        transform: rotate(45deg);
    }
    
    /* 页脚底部在小屏幕下换行 */
    .footer-bottom p {
        display: flex;
        flex-direction: column;
    }
    
    .footer-separator {
        display: none; /* 在小屏幕下隐藏分隔符 */
    }
}