.site-footer {
    width: 100%;
    background: #004c90;
    color: #fff;
}

.site-footer .container {
    width: 100%;
    max-width: 1730px;
    margin: 0 auto;
    padding-left: 30px;
    padding-right: 30px;
}

/* =========================================================
   Footer Main
   ========================================================= */

.footer-main {
    padding: 48px 0 36px;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 24px 40px;
}

/* =========================================================
   品牌区域
   ========================================================= */

.footer-brand {
    flex: 1 1 320px;
    min-width: 280px;
    max-width: 460px;
}

.footer-brand .footer-logo {
    display: inline-block;
    margin-bottom: 6px;
}

.footer-brand .footer-logo img {
    display: block;
    width: auto;
    max-width: 700px;
    max-height: 55px;
    object-fit: contain;
}

.footer-brand p {
    margin: 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
    line-height: 1.7;
}

/* =========================================================
   二维码区域
   ========================================================= */

.footer-qrcodes {
    display: flex;
    gap: 27px;
    flex: 0 0 auto;
}

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

.footer-qrcode-item img {
    display: block;
    width: 100px;
    height: 100px;
    border-radius: 4px;
    background: #fff;
    padding: 3px;
}

.footer-qrcode-item span {
    margin-top: 7px;
    color: rgba(255, 255, 255, 0.50);
    font-size: 12px;
    line-height: 1.5;
    white-space: nowrap;
}

/* =========================================================
   快捷导航
   ========================================================= */

.footer-column {
    flex: 0 0 auto;
    min-width: 100px;
}

.footer-column h3 {
    margin: 0 0 8px;
    padding-bottom: 4px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    border-bottom: 2px solid #ff8124;
    display: inline-block;
}

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

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

.footer-column li + li {
    margin-top: 2px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.70);
    font-size: 14px;
    line-height: 1.8;
    text-decoration: none;
    transition: color 0.25s ease;
}

.footer-column a:hover {
    color: #ff8124;
}

/* =========================================================
   联系信息
   ========================================================= */

.footer-contact {
    flex: 1 1 300px;
    min-width: 240px;
    max-width: 420px;
}

.footer-contact h3 {
    margin: 0 0 8px;
    padding-bottom: 4px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    border-bottom: 2px solid #ff8124;
    display: inline-block;
}

.footer-contact-item {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 2px;
}

.footer-contact-item:last-child {
    margin-bottom: 0;
}

.footer-contact-label {
    color: rgba(255, 255, 255, 0.40);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    white-space: nowrap;
    flex-shrink: 0;
}

.footer-contact-item a,
.footer-contact-item span {
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
    line-height: 1.6;
    word-break: break-all;
    text-decoration: none;
}

.footer-contact-item a {
    transition: color 0.25s ease;
}

.footer-contact-item a:hover {
    color: #ff8124;
}

.footer-contact-item.address span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

/* =========================================================
   Footer Bottom
   ========================================================= */

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 12px 0 0px;
}

.footer-bottom-inner {
    text-align: center;
}

.footer-copyright {
    margin: 0;
    color: rgba(255, 255, 255, 0.40);
    font-size: 14px;
    line-height: 1.8;
}

.footer-copyright a {
    color: rgba(255, 255, 255, 0.40);
    text-decoration: none;
    transition: color 0.25s ease;
}

.footer-copyright a:hover {
    color: #ff8124;
}

.footer-separator {
    margin: 0 10px;
    color: rgba(255, 255, 255, 0.12);
}

/* =========================================================
   响应式 - PC 端保持原样
   ========================================================= */

@media (max-width: 1400px) {
    .footer-grid {
        gap: 24px 30px;
    }
}

@media (max-width: 1200px) {
    .footer-grid {
        gap: 20px 24px;
    }

    .footer-brand {
        flex: 1 1 280px;
        max-width: 380px;
    }

    .footer-contact {
        flex: 1 1 260px;
        max-width: 360px;
    }
}

@media (max-width: 992px) {
    .footer-grid {
        justify-content: center;
        gap: 28px 40px;
    }

    .footer-brand {
        flex: 0 0 100%;
        max-width: 100%;
        text-align: center;
    }

    .footer-brand .footer-logo img {
        margin: 0 auto;
    }

    .footer-brand p {
        max-width: 500px;
        margin: 0 auto;
    }

    .footer-qrcodes {
        flex: 0 0 100%;
        justify-content: center;
    }

    .footer-column {
        flex: 0 0 auto;
        text-align: center;
    }

    .footer-column h3 {
        display: inline-block;
    }

    .footer-column ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 4px 20px;
    }

    .footer-column li + li {
        margin-top: 0;
    }

    .footer-contact {
        flex: 0 0 100%;
        max-width: 100%;
        text-align: center;
    }

    .footer-contact-item {
        justify-content: center;
        flex-wrap: wrap;
    }

    .footer-contact-item.address span {
        text-align: center;
        word-break: break-word;
    }
}

/* =========================================================
   手机端优化 (≤ 768px)
   ========================================================= */

@media (max-width: 768px) {
    .footer-main {
        padding: 24px 0 16px;
    }

    .footer-grid {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    /* ===== 品牌区域 - 左对齐 ===== */
    .footer-brand {
        flex: 0 0 100%;
        max-width: 100%;
        text-align: left;
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* Logo 放大 */
    .footer-brand .footer-logo img {
        max-width: 220px;
        max-height: 44px;
        margin: 0;
    }

    .footer-brand p {
        font-size: 12px;
        line-height: 1.6;
        color: rgba(255, 255, 255, 0.60);
        max-width: 100%;
        margin-top: 6px;
        text-align: left;
    }

    /* ===== 二维码 - 居中 ===== */
    .footer-qrcodes {
        flex: 0 0 100%;
        justify-content: center;
        gap: 24px;
        padding: 8px 0;
    }

    .footer-qrcode-item img {
        width: 88px;
        height: 88px;
        border-radius: 8px;
        padding: 4px;
        background: #fff;
    }

    .footer-qrcode-item span {
        font-size: 11px;
        color: rgba(255, 255, 255, 0.45);
        margin-top: 4px;
        white-space: nowrap;
    }

    /* ===== 导航 - 左对齐，一行显示 ===== */
    .footer-column {
        flex: 0 0 100%;
        max-width: 100%;
        text-align: left;
        padding: 8px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-column:first-of-type {
        border-top: none;
    }

    .footer-column h3 {
        font-size: 14px;
        margin-bottom: 10px;
        padding-bottom: 6px;
        border-bottom: 2px solid #ff8124;
        display: inline-block;
    }

    .footer-column ul {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 20px;
        margin: 0;
        padding: 0;
        text-align: left;
        justify-content: flex-start;
    }

    .footer-column li {
        display: inline-block;
        margin: 0;
        padding: 0;
    }

    .footer-column li + li {
        margin-top: 0;
    }

    /* 隐藏多余的导航项（资讯中心、成功案例） */
    .footer-column ul li:nth-child(n+5) {
        display: none;
    }

    .footer-column a {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.55);
        padding: 4px 0;
        display: inline-block;
    }

    .footer-column a:hover {
        color: #ff8124;
    }

    /* ===== 联系方式 - 左对齐 ===== */
    .footer-contact {
        flex: 0 0 100%;
        max-width: 100%;
        text-align: left;
        padding-top: 12px;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-contact h3 {
        font-size: 14px;
        margin-bottom: 12px;
        padding-bottom: 6px;
        border-bottom: 2px solid #ff8124;
        display: inline-block;
    }

    .footer-contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
        margin-bottom: 12px;
        padding: 0;
    }

    .footer-contact-item:last-child {
        margin-bottom: 0;
    }

    .footer-contact-label {
        font-size: 10px;
        color: rgba(255, 255, 255, 0.30);
        text-transform: uppercase;
        letter-spacing: 0.08em;
        white-space: normal;
        flex-shrink: 0;
    }

    .footer-contact-item a,
    .footer-contact-item span {
        font-size: 14px;
        color: #ffffff;
        word-break: break-word;
        text-align: left;
        line-height: 1.5;
    }

    .footer-contact-item.address span {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.60);
        line-height: 1.6;
    }

    /* ===== 底部 ===== */
    .footer-bottom {
        padding: 10px 0;
    }

    .footer-copyright {
        font-size: 10px;
        color: rgba(255, 255, 255, 0.25);
        line-height: 1.6;
        text-align: center;
    }

    .footer-copyright a {
        color: rgba(255, 255, 255, 0.25);
    }

    .footer-separator {
        margin: 0 4px;
        color: rgba(255, 255, 255, 0.06);
    }
}

/* =========================================================
   小手机 (≤ 480px)
   ========================================================= */

@media (max-width: 480px) {
    .footer-main {
        padding: 16px 0 12px;
    }

    /* Logo 继续放大适配小屏 */
    .footer-brand .footer-logo img {
        max-width: 180px;
        max-height: 36px;
    }

    .footer-brand p {
        font-size: 11px;
    }

    .footer-qrcode-item img {
        width: 72px;
        height: 72px;
    }

    .footer-qrcode-item span {
        font-size: 10px;
    }

    .footer-column h3 {
        font-size: 13px;
    }

    .footer-column ul {
        gap: 4px 14px;
    }

    .footer-column a {
        font-size: 12px;
        padding: 3px 0;
    }

    .footer-contact h3 {
        font-size: 13px;
    }

    .footer-contact-label {
        font-size: 9px;
    }

    .footer-contact-item a,
    .footer-contact-item span {
        font-size: 13px;
    }

    .footer-contact-item.address span {
        font-size: 12px;
    }

    .footer-copyright {
        font-size: 9px;
    }
}

/* =========================================================
   超小屏手机 (≤ 360px)
   ========================================================= */

@media (max-width: 360px) {
    .footer-brand .footer-logo img {
        max-width: 140px;
        max-height: 28px;
    }

    .footer-qrcode-item img {
        width: 60px;
        height: 60px;
    }

    .footer-qrcode-item span {
        font-size: 9px;
    }

    .footer-column ul {
        gap: 2px 10px;
    }

    .footer-column a {
        font-size: 11px;
    }

    .footer-copyright {
        font-size: 8px;
    }
}