/* 新闻分类导航 */
.news-category-nav {
    margin-bottom: 20px;
}

.sidebar-divider {
    height: 2px;
    /*background-color: #e0e0e0;*/
    background-color: #fff;
    margin: 30px 0;
}

.news-nav-item {
    margin-bottom: 2px;
}

.news-nav-item .category-nav-primary {
    border-radius: 4px;
}

/* 右侧新闻列表区域 */
.news-list-area {
    flex: 1;
}

.news-list-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 30px;
}

.news-grid-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-item {
    /*border: 1px solid #f0f0f0;*/
    transition: all 0.3s ease;
    cursor: pointer;
    background: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
}

.news-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.news-image-wrapper {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #f5f5f5;
    position: relative;
}

.news-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-item:hover .news-image-wrapper img {
    transform: scale(1.05);
}

.news-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
}

.news-info {
    padding: 20px;
    text-align: left;
}

.news-date {
    font-size: 13px;
    color: #999;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.news-date::before {
    content: '📅';
    margin-right: 6px;
    font-size: 12px;
}

.news-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-description {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-more {
    font-size: 14px;
    color: #d71f24;
    font-weight: 500;
    transition: color 0.3s ease;
}

.news-item:hover .news-more {
    color: #b81820;
}

/* 新闻详情区域 */
.news-detail-area {
    flex: 1;
}

.news-detail-container {
    background: #ffffff;
    padding: 0;
}

.news-detail-title {
    font-size: 28px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.4;
    padding-bottom: 15px;
    border-bottom: 2px solid #d71f24;
}

.news-detail-date {
    font-size: 14px;
    color: #999;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-detail-date span:first-child {
    font-size: 16px;
}

.news-detail-cover {
    width: 100%;
    margin-bottom: 30px;
    border-radius: 8px;
    overflow: hidden;
}

.news-detail-cover img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
    display: block;
}

.news-detail-content {
    /*font-size: 16px;*/
    color: #666;
    /*line-height: 1.8;*/
}

/*.news-detail-content p {*/
/*    margin-bottom: 15px;*/
/*}*/

/*.news-detail-content img {*/
/*    max-width: 100%;*/
/*    height: auto;*/
/*    margin: 20px 0;*/
/*    border-radius: 4px;*/
/*}*/

/*.news-detail-content h1,*/
/*.news-detail-content h2,*/
/*.news-detail-content h3,*/
/*.news-detail-content h4,*/
/*.news-detail-content h5,*/
/*.news-detail-content h6 {*/
/*    margin: 25px 0 15px 0;*/
/*    color: #333;*/
/*    font-weight: 600;*/
/*}*/

/*.news-detail-content h2 {*/
/*    font-size: 24px;*/
/*}*/

/*.news-detail-content h3 {*/
/*    font-size: 20px;*/
/*}*/

/*.news-detail-content h4 {*/
/*    font-size: 18px;*/
/*}*/

/*.news-detail-content ul,*/
/*.news-detail-content ol {*/
/*    padding-left: 30px;*/
/*    margin-bottom: 15px;*/
/*}*/

/*.news-detail-content li {*/
/*    margin-bottom: 8px;*/
/*}*/

/*.news-detail-content blockquote {*/
/*    border-left: 4px solid #d71f24;*/
/*    padding: 15px 20px;*/
/*    margin: 20px 0;*/
/*    background-color: #f9f9f9;*/
/*    color: #666;*/
/*    font-style: italic;*/
/*}*/

/*.news-detail-content table {*/
/*    width: 100%;*/
/*    border-collapse: collapse;*/
/*    margin: 20px 0;*/
/*}*/

/*.news-detail-content table td,*/
/*.news-detail-content table th {*/
/*    border: 1px solid #ddd;*/
/*    padding: 10px;*/
/*    text-align: left;*/
/*}*/

/*.news-detail-content table th {*/
/*    background-color: #f5f5f5;*/
/*    font-weight: 600;*/
/*}*/

.no-content-text {
    font-size: 14px;
    color: #999;
    text-align: center;
    padding: 40px 0;
}

/* 加载状态 */
.loading-state {
    text-align: center;
    padding: 50px;
    color: #999;
    font-size: 16px;
}

/* 无数据状态 */
.no-data-state {
    text-align: center;
    padding: 50px;
    color: #999;
    font-size: 16px;
    grid-column: 1 / -1;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .news-grid-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .news-image-wrapper {
        height: 180px;
    }

    .news-detail-title {
        font-size: 28px;
    }
}

@media (max-width: 1000px) {
    .product-category-section {
        padding: 60px 0;
    }

    .product-category-container {
        flex-direction: column;
        gap: 30px;
    }

    .category-sidebar {
        width: 100%;
    }

    .category-sidebar-title {
        font-size: 24px;
    }

    .news-list-title {
        font-size: 20px;
    }

    .news-grid-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .news-detail-title {
        font-size: 26px;
    }

    .news-detail-content {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    .product-category-section {
        padding: 40px 0;
    }

    .news-grid-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .news-image-wrapper {
        height: 200px;
    }

    .news-title {
        font-size: 15px;
    }

    .news-description {
        font-size: 13px;
    }

    .news-detail-title {
        font-size: 22px;
    }

    .news-detail-content {
        font-size: 14px;
    }

    .news-detail-cover img {
        max-height: 300px;
    }
}

@media (max-width: 480px) {
    .news-grid-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .news-image-wrapper {
        height: 180px;
    }

    .news-info {
        padding: 15px;
    }

    .news-detail-title {
        font-size: 20px;
    }

    .news-detail-content {
        font-size: 13px;
    }

    .news-detail-cover img {
        max-height: 200px;
    }
}



/* ...调整产品分类导航样式   ... */

/* 产品分类容器 */
.product-category-section {
    width: 100%;
    background-color: #ffffff;
    padding: 80px 0;
}

.product-category-container {
    max-width: 1420px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 40px;
}

/* 左侧分类导航 */
.category-sidebar {
    width: 280px;
    flex-shrink: 0;
}

.category-sidebar-title {
    font-size: 28px;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #d71f24;
}

.category-nav {
    display: flex;
    flex-direction: column;
}

.category-nav-item {
    margin-bottom: 2px;
}

.category-nav-primary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background-color: #f5f5f5;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.category-nav-primary:hover {
    background-color: #e8e8e8;
}

.category-nav-primary.active {
    background-color: #666;
    color: #ffffff;
}

.category-nav-primary .category-name {
    font-size: 15px;
    font-weight: 500;
}

.category-nav-primary .category-icon {
    font-size: 18px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.category-nav-primary.active .category-icon {
    transform: rotate(45deg);
}

.category-nav-secondary {
    display: none;
    background-color: #ffffff;
    border: 1px solid #f0f0f0;
    border-top: none;
}

.category-nav-secondary.show {
    display: block;
}

.category-nav-link {
    display: flex;
    align-items: center;
    padding: 10px 15px 10px 25px;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    border-bottom: 1px solid #f5f5f5;
}

.category-nav-link:last-child {
    border-bottom: none;
}

.category-nav-link:hover {
    color: #d71f24;
    background-color: #fafafa;
}

.category-nav-link.active {
    color: #d71f24;
    background-color: #fff5f5;
    font-weight: 500;
}

.category-nav-link .arrow {
    margin-right: 8px;
    font-size: 12px;
    color: #999;
}

.category-nav-link:hover .arrow,
.category-nav-link.active .arrow {
    color: #d71f24;
}

/* ...   ... */

/* ...   ... */

/* 视频列表样式 */
/*.video-list-container {*/
/*    padding: 20px;*/
/*}*/

.video-list-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #d71f24;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.video-item {
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.video-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.video-wrapper {
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    position: relative;
    background: #f5f5f5;
}

.video-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 返回按钮样式 */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    margin-bottom: 20px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: #e8e8e8;
    border-color: #d71f24;
    color: #d71f24;
}

.back-btn span:first-child {
    font-size: 18px;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-grid {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    /*.video-list-container {*/
    /*    padding: 15px;*/
    /*}*/

    .video-list-title {
        font-size: 20px;
    }
}


/**/