/* ==========================================
   文章页面样式
   ========================================== */

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
}

.article-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* 文章头部 */
.article-page {
    margin-top: 80px;
}

.article-header {
    padding: 80px 0 40px;
    text-align: center;
}

.article-category {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-color);
    margin-bottom: 20px;
    padding: 8px 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.article-category:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.article-title {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: 2px;
    line-height: 1.3;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 14px;
    color: var(--hover-color);
    letter-spacing: 1px;
}

.article-featured-image {
    width: 100%;
    height: 60vh;
    min-height: 400px;
    overflow: hidden;
    margin-bottom: 60px;
}

.article-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 文章内容区域 - 左右布局 */
.article-content {
    padding: 0 0 100px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 60px;
    align-items: start;
}

.article-body {
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-color);
}

.article-body .lead {
    font-size: 22px;
    line-height: 1.8;
    color: var(--hover-color);
    margin-bottom: 50px;
    font-weight: 300;
}

.article-body h2 {
    font-size: 32px;
    font-weight: 400;
    letter-spacing: 1px;
    margin: 60px 0 30px;
    color: var(--primary-color);
}

.article-body h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 1px;
    margin: 40px 0 20px;
    color: var(--primary-color);
}

.article-body p {
    margin-bottom: 25px;
    font-weight: 300;
}

.article-body strong {
    font-weight: 500;
    color: var(--primary-color);
}

.article-body ul,
.article-body ol {
    margin: 30px 0;
    padding-left: 0;
}

.article-body .article-list {
    list-style: none;
}

.article-body .article-list li {
    margin-bottom: 20px;
    padding-left: 30px;
    position: relative;
    line-height: 1.8;
}

.article-body .article-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
}

.article-body ol.article-list {
    counter-reset: article-counter;
}

.article-body ol.article-list li::before {
    content: counter(article-counter);
    counter-increment: article-counter;
    width: auto;
    height: auto;
    background: none;
    font-weight: 500;
    color: var(--primary-color);
    top: 0;
}

/* 文章图片 */
.article-image {
    margin: 60px 0;
}

.article-image img {
    width: 100%;
    height: auto;
}

.image-caption {
    text-align: center;
    font-size: 14px;
    color: var(--hover-color);
    margin-top: 15px;
    font-style: italic;
    font-weight: 300;
}

/* 产品卡片 */
.product-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin: 50px 0;
    padding: 40px;
    background-color: var(--light-gray);
    border: 1px solid var(--border-color);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info h4 {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.product-info p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--text-color);
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 16px;
    color: #FFB800;
}

.product-rating span {
    margin-left: 10px;
    color: var(--text-color);
    font-size: 14px;
}

/* 文章标签 */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 60px 0;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.tag {
    padding: 8px 20px;
    background-color: var(--light-gray);
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition);
    cursor: pointer;
}

.tag:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

/* 相关文章 */
.related-articles {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 2px solid var(--border-color);
}

.related-articles h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.related-card {
    display: block;
    overflow: hidden;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.related-card:hover {
    transform: translateY(-5px);
}

.related-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.related-card:hover img {
    transform: scale(1.05);
}

.related-content {
    padding: 25px;
}

.related-category {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--hover-color);
    margin-bottom: 10px;
}

.related-content h4 {
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 0.5px;
    color: var(--primary-color);
    line-height: 1.4;
}

/* ==========================================
   侧边栏样式
   ========================================== */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 50px;
    align-items: start;
}

.article-sidebar {
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 5px;
}

.article-sidebar::-webkit-scrollbar {
    width: 3px;
}

.article-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.article-sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.article-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--hover-color);
}

.sidebar-section {
    margin-bottom: 35px;
    padding-bottom: 35px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.sidebar-section h3 {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-transform: uppercase;
}

/* 侧边栏推荐产品 */
.sidebar-product {
    border: 1px solid var(--border-color);
    transition: var(--transition);
    overflow: hidden;
}

.sidebar-product:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.sidebar-product-image {
    width: 100%;
    padding-top: 75%;
    position: relative;
    overflow: hidden;
}

.sidebar-product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.sidebar-product:hover .sidebar-product-image img {
    transform: scale(1.1);
}

.sidebar-product-info {
    padding: 15px;
}

.sidebar-product-category {
    font-size: 9px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--hover-color);
    margin-bottom: 6px;
    display: block;
}

.sidebar-product-title {
    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.sidebar-product-price {
    font-size: 16px;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: block;
}

.sidebar-product-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar-btn {
    padding: 8px 12px;
    font-size: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.sidebar-btn-primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-color: var(--primary-color);
}

.sidebar-btn-primary:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

.sidebar-btn-secondary {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

.sidebar-btn-secondary:hover {
    background-color: var(--light-gray);
}

/* 侧边栏相关文章 */
.sidebar-article {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.sidebar-article:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.sidebar-article:hover {
    transform: translateX(3px);
}

.sidebar-article-image {
    width: 65px;
    height: 65px;
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.sidebar-article:hover .sidebar-article-image img {
    transform: scale(1.1);
}

.sidebar-article-content {
    flex: 1;
}

.sidebar-article-category {
    font-size: 9px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--hover-color);
    margin-bottom: 4px;
    display: block;
}

.sidebar-article-title {
    font-size: 12px;
    font-weight: 400;
    line-height: 1.4;
    color: var(--primary-color);
}

/* 侧边栏相关产品 */
.sidebar-product-item {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.sidebar-product-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.sidebar-product-item:hover {
    transform: translateX(3px);
}

.sidebar-product-item-image {
    width: 65px;
    height: 65px;
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar-product-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.sidebar-product-item:hover .sidebar-product-item-image img {
    transform: scale(1.1);
}

.sidebar-product-item-content {
    flex: 1;
}

.sidebar-product-item-category {
    font-size: 9px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--hover-color);
    margin-bottom: 4px;
    display: block;
}

.sidebar-product-item-title {
    font-size: 11px;
    font-weight: 400;
    line-height: 1.4;
    margin-bottom: 6px;
    color: var(--primary-color);
}

.sidebar-product-item-price {
    font-size: 13px;
    font-weight: 400;
    color: var(--primary-color);
}

/* ==========================================
   文章底部产品推荐
   ========================================== */
.article-product-recommendation {
    padding: 80px 0;
    background-color: var(--light-gray);
    border-top: 1px solid var(--border-color);
}

.recommendation-title {
    font-size: 28px;
    font-weight: 400;
    letter-spacing: 3px;
    margin-bottom: 40px;
    color: var(--primary-color);
    text-align: center;
}

.recommendation-content {
    max-width: 900px;
    margin: 0 auto;
}

.recommendation-card {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 50px;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    overflow: hidden;
}

.recommendation-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.recommendation-image {
    width: 100%;
    padding-top: 100%;
    position: relative;
    overflow: hidden;
}

.recommendation-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.recommendation-card:hover .recommendation-image img {
    transform: scale(1.05);
}

.recommendation-info {
    padding: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.recommendation-category {
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--hover-color);
    margin-bottom: 15px;
    display: block;
}

.recommendation-product-title {
    font-size: 28px;
    font-weight: 400;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--primary-color);
    line-height: 1.4;
}

.recommendation-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 30px;
    font-weight: 300;
}

.recommendation-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
}

.recommendation-price {
    font-size: 28px;
    font-weight: 400;
    color: var(--primary-color);
}

.recommendation-link {
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.recommendation-card:hover .recommendation-link {
    color: var(--primary-color);
    transform: translateX(5px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .article-sidebar {
        position: static;
    }

    .recommendation-card {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .recommendation-image {
        padding-top: 75%;
    }

    .recommendation-info {
        padding: 40px;
    }

    .recommendation-product-title {
        font-size: 24px;
    }

    .recommendation-description {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .recommendation-title {
        font-size: 22px;
    }

    .recommendation-info {
        padding: 30px 20px;
    }

    .recommendation-product-title {
        font-size: 20px;
    }

    .recommendation-price {
        font-size: 24px;
    }
}
    .article-title {
        font-size: 40px;
    }

    .article-body {
        font-size: 17px;
    }

    .article-body .lead {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .container-narrow {
        padding: 0 20px;
    }

    .article-header {
        padding: 60px 0 30px;
    }

    .article-title {
        font-size: 32px;
        letter-spacing: 1px;
    }

    .article-meta {
        flex-direction: column;
        gap: 10px;
    }

    .article-featured-image {
        height: 40vh;
        min-height: 300px;
        margin-bottom: 60px;
    }

    .article-body {
        font-size: 16px;
    }

    .article-body .lead {
        font-size: 18px;
        margin-bottom: 40px;
    }

    .article-body h2 {
        font-size: 26px;
        margin: 50px 0 25px;
    }

    .article-body h3 {
        font-size: 20px;
        margin: 35px 0 20px;
    }

    .product-card {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 25px;
        margin: 40px 0;
    }

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

    .article-image {
        margin: 40px 0;
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 26px;
    }

    .article-body h2 {
        font-size: 22px;
    }

    .article-body h3 {
        font-size: 18px;
    }
}