/* 面包屑导航样式 */
.breadcrumb-block {
    background-color: var(--white);
    padding: 15px 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    margin-top: 10px;
    max-width: 1170px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

.breadcrumb {
    color: var(--gray);
}

.breadcrumb a {
    color: var(--primary-blue);
    text-decoration: none;
}

.breadcrumb i {
    margin: 0 10px;
    font-size: 12px;
}

/* 新闻页面布局 */
.news-container {
    display: flex;
    gap: 10px;
    margin: auto;
    max-width: 1170px;
    box-sizing: border-box;
    margin-top: 10px;
}

/* 左侧边栏样式 */
.news-sidebar {
    width: 250px;
    flex-shrink: 0;
    box-sizing: border-box;
}

.sidebar-block {
    background: var(--white);
    margin-bottom: 10px;
    overflow: hidden;
}

.sidebar-block.last-block {
    margin-bottom: 0;
}

.sidebar-block h2 {
    padding: 15px;
    margin: 0;
    background: var(--primary-blue);
    color: var(--white);
    font-size: 1.1rem;
}

.sidebar-block ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-block li {
    border-bottom: 1px solid var(--light-gray);
}

.sidebar-block li:last-child {
    border-bottom: none;
}

.sidebar-block a {
    display: block;
    padding: 12px 15px;
    color: var(--gray);
    text-decoration: none;
    transition: all 0.3s ease;
}

.sidebar-block a:hover,
.sidebar-block a.active {
    color: var(--primary-blue);
    background: var(--light-blue);
}

/* 右侧新闻列表样式 */
.news-content {
    width: calc(100% - 260px);
    background: var(--white);
    padding: 20px;
    box-sizing: border-box;
}

.news-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--light-gray);
}

.news-item:last-child {
    border-bottom: none;
}

.news-item h3 {
    margin: 0 0 10px;
    font-size: 1.2rem;
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.news-item h3 a {
    color: var(--black);
    text-decoration: none;
    transition: color 0.3s ease;
    flex: 1;
}

.news-item h3 a:hover {
    color: var(--primary-blue);
}

.news-date {
    color: var(--gray);
    font-size: 12px;
    flex-shrink: 0;
}

.news-summary {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    gap: 5px;
}

.page-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    color: var(--gray);
    background: var(--white);
    border: 1px solid var(--light-gray);
    text-decoration: none;
    transition: all 0.3s ease;
}

.page-item:hover {
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.page-item.active {
    color: var(--white);
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.page-item.disabled {
    color: var(--light-gray);
    cursor: not-allowed;
}

.page-dots {
    color: var(--gray);
    padding: 0 8px;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .news-container {
        flex-direction: column;
        padding: 10px;
    }

    .news-sidebar {
        width: 100%;
    }

    /* 移动端隐藏品牌和型号列表 */
    .brand-block,
    .product-block {
        display: none;
    }

    /* 分类块在移动端的样式调整 */
    .category-block {
        margin-bottom: 0;
    }

    .news-content {
        width: 100%;
        padding: 15px;
    }

    /* 新闻列表项移动端样式 */
    .news-item h3 {
        font-size: 1.1rem;
        flex-direction: row;
        gap: 10px;
        align-items: baseline;
    }

    .news-item h3 .news-date {
        font-size: 12px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .news-item h3 a {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        min-width: 0;
    }

    .news-summary {
        font-size: 12px;
        line-height: 1.5;
    }

    /* 新闻详情页移动端样式 */
    .news-title {
        font-size: 1.4rem;
        line-height: 1.3;
    }

    .news-info {
        gap: 15px;
        flex-wrap: wrap;
        margin-bottom: 15px;
        padding-bottom: 15px;
    }

    .news-body {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    .news-body h2 {
        font-size: 1.2rem;
        margin: 20px 0 10px;
    }

    .prev-next a {
        font-size: 0.9rem;
        padding: 5px 0;
    }

    .prev-next a span {
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .related-news-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .related-news-item {
        padding: 5px 0;
        border-bottom: 1px solid var(--light-gray);
    }

    .related-news-item:last-child {
        border-bottom: none;
    }

    .related-news-item .news-date {
        font-size: 12px;
    }

    /* 分页移动端样式 */
    .pagination {
        flex-wrap: wrap;
    }

    .page-item {
        min-width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
}

/* 小屏幕适配 */
@media (max-width: 480px) {
    .news-container {
        padding: 8px;
    }

    .news-content {
        padding: 12px;
    }

    .news-title {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }

    .news-info {
        gap: 12px;
        margin-bottom: 12px;
        padding-bottom: 12px;
    }

    .news-body {
        font-size: 0.85rem;
        line-height: 1.5;
    }

    .news-body h2 {
        font-size: 1.1rem;
        margin: 15px 0 8px;
    }

    .news-navigation {
        margin: 15px 0;
        padding: 15px 0;
    }

    .related-news-item {
        padding: 4px 0;
    }

    .news-item h3 {
        font-size: 1rem;
        gap: 8px;
    }

    .news-item h3 .news-date {
        font-size: 12px;
    }
}

/* 品牌列表和优势型号列表共用的滚动样式 */
.brand-block ul,
.product-block ul {
    max-height: 400px;
    overflow-y: auto;
}

.brand-block ul::-webkit-scrollbar,
.product-block ul::-webkit-scrollbar {
    width: 6px;
}

.brand-block ul::-webkit-scrollbar-thumb,
.product-block ul::-webkit-scrollbar-thumb {
    background: var(--light-blue);
    border-radius: 3px;
}

.brand-block ul::-webkit-scrollbar-track,
.product-block ul::-webkit-scrollbar-track {
    background: var(--white);
}

/* 鼠标悬停在滚动条上时的样式 */
.brand-block ul::-webkit-scrollbar-thumb:hover,
.product-block ul::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue);
}

/* 新闻详情样式 */
.news-detail {
    box-sizing: border-box;
}

.news-title {
    font-size: 1.8rem;
    color: var(--black);
    margin: 0 0 15px;
    line-height: 1.4;
    word-wrap: break-word;
}

.news-info {
    display: flex;
    gap: 20px;
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--light-gray);
}

.news-views i {
    margin-right: 5px;
}

.news-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--black);
}

.news-body h2 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--black);
}

.news-body p {
    margin: 15px 0;
}

.news-body ul {
    margin: 15px 0;
    padding-left: 20px;
}

.news-body li {
    margin: 8px 0;
}

/* 上一篇下一篇导航 */
.news-navigation {
    margin: 20px 0;
    padding: 20px 0;
    border-top: 1px solid var(--light-gray);
    border-bottom: 1px solid var(--light-gray);
}

.prev-next {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.prev-next a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray);
    text-decoration: none;
    transition: color 0.3s ease;
    overflow: hidden;
}

.prev-next a.disabled {
    cursor: not-allowed;
    opacity: 0.5;
    pointer-events: none;
}

.prev-next a span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.prev-next .prev {
    justify-content: flex-start;
}

.prev-next .next {
    justify-content: flex-end;
    text-align: right;
}

.prev-next a:hover:not(.disabled) {
    color: var(--primary-blue);
}

/* 相关新闻 */
.related-news {
    margin-top: 20px;
}

.related-news h3 {
    font-size: 1.2rem;
    color: var(--black);
    margin-bottom: 15px;
}

.related-news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.related-news-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    overflow: hidden;
}

.related-news-item a {
    color: var(--black);
    text-decoration: none;
    transition: color 0.3s ease;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.related-news-item a:hover {
    color: var(--primary-blue);
}

.related-news-item .news-date {
    color: var(--gray);
    font-size: 0.9rem;
    flex-shrink: 0;
    white-space: nowrap;
    min-width: 80px;
    text-align: right;
    margin-left: 10px;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .prev-next {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .prev-next .next {
        justify-content: flex-start;
        text-align: left;
    }

    .related-news-grid {
        grid-template-columns: 1fr;
    }
}