/* =========================
   页脚（类似陕重汽风格）
   ========================= */
:root {
    --accent-color: #e60012;
    --transition: all 0.3s ease;
    --font-family-english: Arial, sans-serif;
}

footer {
    background-color: #1a2a3a;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 1fr;
    gap: 34px;
    margin-bottom: 40px;
    align-items: start;
}

.footer-block {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 0;
}

/* =========================
   第一列：相关链接
   改成左右结构，两排显示
   并加宽，尽量不换行
   ========================= */
.footer-links-block .related-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 12px;
    margin-top: 10px;
}

.related-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    padding: 9px 14px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    transition: var(--transition);
    font-size: 0.9rem;
    text-decoration: none;
    min-height: 40px;
    width: 100%;
}

.related-link:hover {
    background-color: rgba(230, 0, 18, 0.2);
    color: #fff;
    transform: translateX(3px);
}

.related-link i {
    color: var(--accent-color);
    font-size: 0.8rem;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.related-link span {
    flex: 1;
    min-width: 0;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: keep-all;
}

/* =========================
   第二列：公司信息 + 联系地址
   ========================= */
.company-name {
    margin-bottom: 25px;
    text-align: left;
}

.chinese-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 5px;
    line-height: 1.3;
    text-align: left;
}

.english-name {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-family: var(--font-family-english);
    letter-spacing: 0.5px;
    line-height: 1.4;
    text-align: left;
}

.contact-info {
    margin-bottom: 26px;
}

.contact-line {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
}

.contact-label {
    min-width: 120px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.contact-value {
    flex: 1;
    font-weight: 600;
}

.footer-address-section {
    margin-top: 8px;
}

.footer-address-section h3 {
    margin-bottom: 1rem;
}

/* =========================
   第三列：二维码部分
   一排优先显示，更紧凑
   ========================= */
.footer-social-block {
    justify-content: flex-start;
    min-width: 320px;
}

.social-media-section {
    margin-top: 0;
}

.social-media-title {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.social-media-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}

.social-media-item {
    width: 78px;
    flex: 0 0 78px;
    text-align: center;
    transition: var(--transition);
}

.social-media-item:hover {
    transform: translateY(-2px);
}

.social-media-icon {
    width: 56px;
    height: 56px;
    background-color: #fff;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 6px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-media-icon img {
    width: 82%;
    height: 82%;
    object-fit: contain;
    display: block;
}

.social-media-label {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    display: block;
    line-height: 1.2;
    word-break: break-word;
}

.social-note {
    font-size: 0.76rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: left;
    padding: 6px 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    margin-top: 6px;
}

/* =========================
   标题
   ========================= */
.footer-block h3 {
    color: #fff;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-block h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-block p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

/* =========================
   联系地址
   ========================= */
.contact-details {
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.contact-item i {
    margin-right: 10px;
    color: var(--accent-color);
    margin-top: 3px;
    flex-shrink: 0;
}

.contact-item span {
    line-height: 1.5;
    word-break: break-all;
}

/* =========================
   版权信息
   ========================= */
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* =========================
   二维码放大弹窗样式
   ========================= */
.qrcode-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.qrcode-modal-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
}

.qrcode-modal-content {
    position: relative;
    z-index: 10000;
    text-align: center;
    max-width: 90vw;
    max-height: 90vh;
}

.qrcode-modal-content img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 8px;
    background-color: #fff;
    padding: 10px;
}

.qrcode-modal-tip {
    color: #fff;
    font-size: 0.9rem;
    margin-top: 15px;
    opacity: 0.8;
}

.qrcode-modal.show {
    display: flex;
}

/* =========================
   平板
   ========================= */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: 1.18fr 1fr;
        gap: 28px;
    }

    .footer-social-block {
        grid-column: 1 / -1;
    }

    .social-media-grid {
        gap: 12px;
    }
}

/* =========================
   响应式调整
   ========================= */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-block {
        margin-bottom: 20px;
    }

    .footer-links-block .related-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .social-media-grid {
        gap: 10px;
    }

    .social-media-item {
        width: 74px;
        flex: 0 0 74px;
    }
}

/* =========================
   移动端紧凑化
   ========================= */
@media (max-width: 768px) {
    footer {
        padding: 40px 0 15px;
    }

    .footer-content {
        gap: 20px;
        margin-bottom: 30px;
    }

    .footer-block {
        margin-bottom: 15px;
    }

    .footer-links-block .related-links {
        gap: 8px 10px;
        margin-top: 8px;
    }

    .related-link {
        padding: 7px 10px;
        font-size: 0.85rem;
        min-height: 36px;
    }

    .company-name {
        margin-bottom: 15px;
    }

    .chinese-name {
        font-size: 1.2rem;
        margin-bottom: 3px;
        line-height: 1.2;
    }

    .english-name {
        font-size: 0.8rem;
        line-height: 1.3;
    }

    .contact-info {
        margin-bottom: 20px;
    }

    .contact-line {
        margin-bottom: 8px;
        font-size: 0.9rem;
    }

    .contact-label {
        min-width: 100px;
    }

    .social-media-section {
        margin-top: 0;
    }

    .social-media-title {
        font-size: 0.95rem;
        margin-bottom: 10px;
        padding-bottom: 6px;
    }

    .social-media-grid {
        gap: 8px;
        margin: 0 0 8px;
    }

    .social-media-item {
        width: 68px;
        flex: 0 0 68px;
    }

    .social-media-icon {
        width: 52px;
        height: 52px;
        border-radius: 6px;
    }

    .social-media-label {
        font-size: 0.66rem;
        margin-top: 3px;
    }

    .social-note {
        font-size: 0.72rem;
        padding: 6px;
        margin-top: 6px;
        text-align: left;
    }

    .footer-block h3 {
        margin-bottom: 1rem;
        font-size: 1.1rem;
        padding-bottom: 8px;
    }

    .contact-details {
        margin-bottom: 1rem;
    }

    .contact-item {
        margin-bottom: 10px;
        font-size: 0.9rem;
    }

    .contact-item i {
        margin-right: 8px;
    }

    .copyright {
        padding-top: 20px;
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    footer {
        padding: 30px 0 10px;
    }

    .footer-content {
        gap: 15px;
    }

    .footer-links-block .related-links {
        grid-template-columns: 1fr;
    }

    .related-link span {
        white-space: normal;
        overflow: visible;
        text-overflow: unset;
        word-break: break-all;
    }

    .chinese-name {
        font-size: 1.1rem;
    }

    .english-name {
        font-size: 0.75rem;
    }

    .contact-line {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 10px;
    }

    .contact-label {
        min-width: auto;
        margin-bottom: 2px;
    }

    .social-media-grid {
        gap: 8px;
    }

    .social-media-item {
        width: 64px;
        flex: 0 0 64px;
    }

    .social-media-icon {
        width: 48px;
        height: 48px;
    }

    .social-media-label {
        font-size: 0.62rem;
    }

    .related-link {
        padding: 6px 8px;
        font-size: 0.8rem;
    }

    .footer-block h3 {
        font-size: 1rem;
    }

    .contact-item {
        font-size: 0.85rem;
    }

    .copyright {
        padding-top: 15px;
        font-size: 0.8rem;
    }

    .qrcode-modal-content img {
        max-width: 260px;
    }
}

@media (max-width: 400px) {
    .social-media-item {
        width: 60px;
        flex: 0 0 60px;
    }

    .social-media-icon {
        width: 44px;
        height: 44px;
    }

    .social-media-label {
        font-size: 0.6rem;
    }

    .chinese-name {
        font-size: 1rem;
    }

    .english-name {
        font-size: 0.7rem;
    }

    .qrcode-modal-content img {
        max-width: 220px;
    }
}

/* 原有二维码保护样式保留 */
@media (max-width: 768px) {
    footer .container {
        padding: 0 15px;
    }

    .footer-qrcode,
    .qrcode-container,
    [class*="qrcode"] {
        min-height: 60px !important;
    }
}

@media (max-width: 576px) {
    footer .container {
        padding: 0 10px;
    }

    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}