/* ============================================================
   页脚统一样式 —— 所有页面共用同一份 components/footer.html
   产品页经 css/nav-footer.css 的 @import 引用；首页/关于/联系直接引用
   ============================================================ */

.footer .container {
    max-width: var(--content);
    margin: 0 auto;
    padding: 0 24px;
}

.footer {
    background: var(--text);
    color: rgba(255, 255, 255, 0.65);
    padding: 72px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
    font-size: 14px;
    line-height: 2.2;
    margin-top: 16px;
    max-width: 360px;
}

.footer-social {
    display: none;
    gap: 12px;
    margin-top: 20px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 8px;
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.5);
    transition: all 0.25s;
}

.social-link:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
    transform: translateY(-2px);
}

.footer h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
}

.footer ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
    flex-wrap: wrap;
    gap: 16px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* PC 端：页脚容器去掉左右内边距 */
@media (min-width: 769px) {
    .footer .container {
        padding: 0;
    }
}