/* 发展历程PC/移动端显示控制 */
.timeline-mobile {
    display: none;
}

@media screen and (max-width: 768px) {
    .pc-timeline {
        display: none;
    }

    .timeline-mobile {
        display: block;
    }
}

/* 移动端响应式样式 */
@media screen and (max-width: 768px) {
    /* Banner优化 */
    .about-banner {
        height: 200px;
        margin-top: 60px;
    }

    .about-banner h1 {
        font-size: 2em;
        margin-top: 0;
    }

    /* 隐藏位置导航 */
    .location-bar {
        display: none;
    }

    /* 内容区域优化 */
    .about-section {
        padding: 30px 0;
    }

    .section-header {
        margin-bottom: 30px;
    }

    .section-header h2 {
        font-size: 1.8em;
    }

    .en-title {
        font-size: 1em;
    }

    /* 公司简介部分优化 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 20px;
    }

    .about-text {
        padding: 0;
        order: 2;
    }

    .about-image {
        order: 1;
        margin: 0 -20px;
        border-radius: 0;
    }

    .about-text p {
        font-size: 1em;
        margin-bottom: 15px;
    }

    /* 数据展示优化 */
    .about-data {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        margin-top: 25px;
    }

    .data-item {
        padding: 15px 10px;
    }

    .data-item .number {
        font-size: 2em;
    }

    .data-item .unit {
        font-size: 1em;
    }

    .data-item p {
        margin-top: 5px;
        font-size: 0.9em;
    }

    /* 企业文化部分优化 */
    .values-section {
        padding: 30px 0;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 25px;
    }

    .value-card {
        padding: 20px;
    }

    .value-icon {
        font-size: 2em;
        margin-bottom: 15px;
    }

    .value-card h3 {
        font-size: 1.3em;
        margin-bottom: 10px;
    }

    .value-card p {
        font-size: 0.95em;
    }

    /* 发展历程部分优化 */
    .pc-timeline {
        display: none;
    }

    .timeline-mobile {
        padding: 20px 0;
        margin: 30px 0;
        position: relative;
        display: block;
    }

    .timeline-mobile-wrapper {
        position: relative;
        overflow: hidden;
        padding: 20px 0;
    }

    .timeline-mobile-slider {
        display: flex;
        transition: transform 0.3s ease;
    }

    .timeline-mobile-item {
        flex: 0 0 100%;
        padding: 0 20px;
    }

    .timeline-mobile-card {
        background: #fff;
        border-radius: 15px;
        padding: 25px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        text-align: center;
        transition: transform 0.3s ease;
    }

    .timeline-mobile-year {
        font-size: 2.5em;
        font-weight: bold;
        color: #007bff;
        margin-bottom: 15px;
        position: relative;
        display: inline-block;
    }

    .timeline-mobile-year::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 3px;
        background: #007bff;
        border-radius: 2px;
    }

    .timeline-mobile-content {
        margin-top: 20px;
    }

    .timeline-mobile-content p {
        color: #666;
        line-height: 1.6;
        font-size: 1em;
        margin: 0;
    }

    .timeline-mobile-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        background: #fff;
        border: none;
        border-radius: 50%;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        color: #007bff;
        font-size: 1.2em;
        cursor: pointer;
        z-index: 10;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

    .timeline-mobile-nav:hover {
        background: #007bff;
        color: #fff;
        box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
    }

    .timeline-mobile-nav.prev {
        left: 10px;
    }

    .timeline-mobile-nav.next {
        right: 10px;
    }

    .timeline-mobile-indicators {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 20px;
    }

    .timeline-mobile-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #ddd;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .timeline-mobile-dot.active {
        background: #007bff;
        transform: scale(1.2);
    }

    /* 添加触摸反馈效果 */
    .timeline-mobile-card:active {
        transform: scale(0.98);
    }

    /* 容器内边距优化 */
    .container {
        padding: 0 15px;
    }

    /* 按钮样式优化 */
    .cta-button {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    /* 底部导航优化 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 30px 15px;
    }

    /* 默认隐藏所有列 */
    .footer-column:not(.contact) {
        display: none;
    }

    /* 联系方式部分样式优化 */
    .footer-column.contact {
        display: block !important;
        background: rgba(255, 255, 255, 0.05);
        padding: 25px 20px;
        border-radius: 10px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .footer-column.contact h3 {
        font-size: 1.6em;
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px;
        color: #fff;
        text-align: center;
    }

    .footer-column.contact h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 3px;
        background: #007bff;
        border-radius: 2px;
    }

    .contact-info {
        display: flex;
        align-items: flex-start;
        margin-bottom: 20px;
        padding: 12px 15px;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .contact-info:hover {
        background: rgba(255, 255, 255, 0.08);
        transform: translateY(-2px);
    }

    .contact-info i {
        color: #007bff;
        font-size: 1.2em;
        margin-right: 15px;
        margin-top: 4px;
    }

    .contact-info span {
        font-size: 1em;
        line-height: 1.6;
        color: rgba(255, 255, 255, 0.9);
    }

    /* 隐藏手机网站板块 */
    .qr-code {
        display: none;
    }

    /* 底部版权信息样式优化 */
    .footer-bottom {
        padding: 20px 0;
        text-align: center;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        margin-top: 30px;
        background: rgba(0, 0, 0, 0.2);
    }

    .footer-bottom p {
        font-size: 0.85em;
        line-height: 1.6;
        color: rgba(255, 255, 255, 0.5);
    }

    .footer-bottom a {
        color: rgba(255, 255, 255, 0.6);
        text-decoration: none;
        margin: 0 5px;
        transition: color 0.3s ease;
    }

    .footer-bottom a:hover {
        color: #007bff;
    }
}