/* 底部导航基础样式 */
.lx-footer {
    background: #eee;
    margin: 0 !important;
    border: none !important;
}

.lx-footer1bg {
    background: #2D3748;
    padding: 60px 0;
    color: var(--white);
}

.lx-footer-wapper1 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.lx-footer-list1 {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

/* 左侧导航区域 - 水平并排布局 */
.lx-footer-lt {
    flex: 3;
    display: -webkit-box !important;
    display: -ms-flexbox !important;
    display: flex !important;
    flex-direction: row !important;
    gap: 40px;
}

/* 导航容器 */
.lx-footer-f_nav {
    flex: 1;
    display: block;
}

.lx-footer-nav-item {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    min-width: 180px;
}

.lx-footer-nav-item dt {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--white);
    line-height: 1.4;
}

.lx-footer-nav-item dt a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.lx-footer-nav-item dt a:hover {
    color: var(--primary-color);
}

.lx-footer-nav-item dd {
    font-size: 14px;
    margin: 0 0 8px 0;
    line-height: 1.6;
}

.lx-footer-nav-item dd a {
    color: #CBD5E0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.lx-footer-nav-item dd a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* 右侧联系方式 */
.lx-footer-rt {
    flex: 2;
}

.lx-footer-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lx-footer-contact-item {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 14px;
}

.lx-footer-contact-label {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    font-weight: 600;
    min-width: 80px;
}

.lx-footer-contact-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    overflow: hidden;
}

.lx-footer-contact-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.lx-footer-contact-value {
    color: #CBD5E0;
    font-weight: normal;
    flex: 1;
    line-height: 1.6;
    word-break: break-all;
}

/* 版权信息 - 优化后的样式 */
.lx-footer-copyright {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #4A5568;
    font-size: 13px;
    color: #CBD5E0;
    /* 核心：flex垂直布局，让备案信息和版权文字上下排列 */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

/* 备案信息容器 - 关键：始终横向排列 */
.copyright-inner {
    display: flex;
    align-items: center;
    gap: 8px; /* 图标和文字的间距，可调整 */
    white-space: nowrap; /* 防止文字换行导致图标和文字分离 */
}

/* 备案图标样式 */
.copyright-inner img {
    width: 20px;
    height: 20px;
    vertical-align: middle;
}

/* 备案链接样式 */
.lx-footer-copyright a {
    color: #CBD5E0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.lx-footer-copyright a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* 版权文字样式 */
.copyright-text {
    margin: 0;
    line-height: 1.6;
    opacity: 0.8;
}

/* 响应式适配 - 平板端 */
@media (max-width: 992px) {
    .lx-footer-list1 {
        gap: 30px;
    }
    .lx-footer-lt {
        gap: 30px;
    }
    .lx-footer-nav-item {
        min-width: 120px;
    }
    .lx-footer-nav-item dt {
        font-size: 16px;
    }
    .lx-footer-nav-item dd {
        font-size: 13px;
    }
}

/* 响应式适配 - 移动端：垂直堆叠布局，保持导航项垂直排列 */
@media (max-width: 768px) {
    .lx-footer1bg {
        padding: 25px 0;
    }
    .lx-footer-wapper1 {
        padding: 0 10px;
    }
    .lx-footer-list1 {
        flex-direction: column;
        gap: 20px;
    }
    
    /* 左侧导航区域 - 水平并排布局 */
    .lx-footer-lt {
        flex: none;
        width: 100%;
        display: flex;
        flex-direction: row;
        gap: 15px;
    }
        
    /* 上层导航容器：关于朗芯系列 */
    .lx-footer-f_nav.nav-top,
    .lx-footer-f_nav:first-child {
        flex: 1;
        display: block;
        margin-bottom: 0;
        padding: 0;
        border: none;
    }
        
    /* 下层导航容器：产品中心系列 */
    .lx-footer-f_nav.nav-bottom,
    .lx-footer-f_nav:last-child {
        flex: 1;
        display: block;
        padding: 0;
        border: none;
    }
    
    /* 导航项 - 垂直排列 */
    .lx-footer-f_nav.nav-top .lx-footer-nav-item,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item,
    .lx-footer-f_nav:first-child .lx-footer-nav-item,
    .lx-footer-f_nav:last-child .lx-footer-nav-item {
        margin-bottom: 0;
        min-width: auto;
        text-align: center;
    }
    
    /* 导航标题 */
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dt,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dt,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dt,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dt {
        font-size: 15px;
        margin-bottom: 10px;
        padding: 8px 0;
        background: transparent;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dt a,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dt a,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dt a,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dt a {
        display: inline;
        padding: 0;
        background: transparent;
    }
    
    /* 子导航项 - 垂直排列 */
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dd,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dd,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dd,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dd {
        display: block;
        margin: 0 0 8px 0;
        font-size: 13px;
    }
    
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dd:last-child,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dd:last-child,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dd:last-child,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dd:last-child {
        margin-bottom: 0;
    }
    
    /* 右侧联系方式 - 显示在导航下方 */
    .lx-footer-rt {
        flex: none;
        width: 100%;
        padding-top: 15px;
        border-top: 1px solid rgba(255,255,255,0.1);
    }
    
    .lx-footer-f_contact {
        margin-top: 0;
        padding-top: 0;
        border-top: none;
    }
    
    .lx-footer-contact-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    
    .lx-footer-contact-item {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 0;
        font-size: 13px;
        justify-content: center;
    }
    
    .lx-footer-contact-label {
        display: flex;
        align-items: center;
        gap: 8px;
        min-width: auto;
        font-size: 13px;
    }
    
    .lx-footer-contact-icon {
        width: 20px;
        height: 20px;
    }
    
    .lx-footer-contact-value {
        font-size: 13px;
        flex: 0 0 auto;
    }
    
    /* 移动端版权信息 */
    .lx-footer-copyright {
        margin-top: 15px;
        padding-top: 10px;
        font-size: 11px;
    }
    
    .copyright-inner {
        flex-direction: row;
        gap: 6px;
        justify-content: center;
    }
}

/* 小屏手机进一步缩放 - 保持垂直排列 */
@media (max-width: 576px) {
    .lx-footer1bg {
        padding: 20px 0;
    }
    .lx-footer-list1 {
        gap: 15px;
    }
    
    /* 上层导航容器 */
    .lx-footer-f_nav.nav-top,
    .lx-footer-f_nav:first-child {
        margin-bottom: 12px;
        padding-bottom: 12px;
    }
    
    /* 导航标题 */
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dt,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dt,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dt,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dt {
        font-size: 14px;
        margin-bottom: 8px;
        padding: 6px 0;
    }
    
    /* 子导航项 */
    .lx-footer-f_nav.nav-top .lx-footer-nav-item dd,
    .lx-footer-f_nav.nav-bottom .lx-footer-nav-item dd,
    .lx-footer-f_nav:first-child .lx-footer-nav-item dd,
    .lx-footer-f_nav:last-child .lx-footer-nav-item dd {
        font-size: 12px;
        margin-bottom: 6px;
    }
    
    /* 联系方式 */
    .lx-footer-contact-item {
        font-size: 12px;
        gap: 8px;
    }
    
    .lx-footer-contact-label {
        font-size: 12px;
        gap: 6px;
    }
    
    .lx-footer-contact-icon {
        width: 18px;
        height: 18px;
    }
    
    .lx-footer-contact-value {
        font-size: 12px;
    }
    
    .lx-footer-copyright {
        font-size: 10px;
    }
}