/* ====== 文章页面独有CSS部分 ====== */
/* 文章头部区域 */
.article-header {
    padding: 180px 0 80px;
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.95) 0%, rgba(230, 240, 255, 0.95) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.article-header h1 {
    font-size: 3.5rem;
    margin-bottom: 25px;
    line-height: 1.2;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    color: var(--gray-color);
    font-size: 1.1rem;
    flex-wrap: wrap;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-meta i {
    color: var(--secondary-color);
}

.category-badge {
    display: inline-block;
    padding: 8px 25px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    margin-top: 10px;
}

/* 文章主体区域 */
.article-body {
    padding: 80px 0;
    background: white;
}

.article-container {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    padding: 0 25px;
}

/* 文章主体样式 - 占据横向所有位置 */
.article-content {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
}

/* H2/H3/H4/H5/P/IMG标签样式 */
.article-content h2 {
    text-align: left;
    font-size: 2.5rem;
    margin-top: 60px;
    margin-bottom: 25px;
    position: relative;
    padding-left: 0;
}

.article-content h2:after {
    left: 0;
    transform: translateX(0);
    width: 80px;
}

.article-content h3 {
    font-size: 2rem;
    margin-top: 50px;
    margin-bottom: 20px;
    color: var(--dark-color);
    position: relative;
    padding-left: 15px;
}

.article-content h3:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.article-content h4 {
    font-size: 1.6rem;
    margin-top: 40px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.article-content h5 {
    font-size: 1.3rem;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.article-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 25px;
    color: var(--gray-color);
}

/* 图片自适应样式 */
.article-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 40px auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 1px solid rgba(0, 102, 204, 0.1);
    transition: var(--transition);
}

.article-content img:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 102, 204, 0.15);
}

.image-caption {
    text-align: center;
    font-style: italic;
    color: var(--gray-color);
    margin-top: -30px;
    margin-bottom: 40px;
    font-size: 1rem;
    padding: 0 20px;
}

/* 列表样式 */
.article-content ul, .article-content ol {
    margin: 0 0 30px 30px;
    color: var(--gray-color);
    font-size: 1.2rem;
    line-height: 1.8;
}

.article-content li {
    margin-bottom: 12px;
}

/* 引用样式 */
.article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 25px 35px;
    margin: 40px 0;
    background: rgba(0, 102, 204, 0.05);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--dark-color);
    position: relative;
}

.article-content blockquote:before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

/* 表格样式 */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 40px 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.article-content th {
    background: var(--gradient-primary);
    color: white;
    font-weight: 700;
    padding: 18px;
    text-align: left;
}

.article-content td {
    padding: 15px 18px;
    border-bottom: 1px solid rgba(0, 102, 204, 0.1);
    color: var(--gray-color);
}

.article-content tr:nth-child(even) {
    background: rgba(0, 102, 204, 0.03);
}

/* 文章导航 - 上一篇/下一篇 */
.article-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid rgba(0, 102, 204, 0.1);
}

.article-nav-item {
    display: flex;
    align-items: center;
    gap: 20px;
    width: 48%;
    padding: 25px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.article-nav-item:hover {
    transform: translateY(-5px);
    background: white;
    box-shadow: var(--box-shadow);
    border-color: rgba(0, 102, 204, 0.2);
}

.nav-prev {
    text-align: left;
}

.nav-next {
    text-align: right;
    flex-direction: row-reverse;
}

.nav-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.nav-content h4 {
    font-size: 1.1rem;
    color: var(--gray-color);
    margin-bottom: 8px;
}

.nav-content h3 {
    font-size: 1.4rem;
    margin: 0;
    color: var(--dark-color);
}

/* 相关文章区域 */
.related-articles {
    padding: 80px 0;
    background: var(--light-bg);
}

.related-articles h2 {
    margin-bottom: 50px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
}

.related-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.related-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 102, 204, 0.15);
    border-color: rgba(0, 102, 204, 0.2);
}

.related-image {
    height: 200px;
    overflow: hidden;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}

.related-card:hover .related-image img {
    transform: scale(1.1);
}

.related-content {
    padding: 30px;
}

.related-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.related-content h3 a {
    color: var(--dark-color);
    text-decoration: none;
}

.related-content h3 a:hover {
    color: var(--primary-color);
}

.related-meta {
    display: flex;
    justify-content: space-between;
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 102, 204, 0.05);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .article-header h1 {
        font-size: 3rem;
    }
    
    .article-content h2 {
        font-size: 2.3rem;
    }
    
    .article-content h3 {
        font-size: 1.9rem;
    }
}

@media (max-width: 992px) {
    .article-header {
        padding: 150px 0 60px;
    }
    
    .article-header h1 {
        font-size: 2.8rem;
    }
    
    .article-content h2 {
        font-size: 2.2rem;
    }
    
    .article-content h3 {
        font-size: 1.8rem;
    }
    
    .article-navigation {
        flex-direction: column;
        gap: 25px;
    }
    
    .article-nav-item {
        width: 100%;
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .article-header h1 {
        font-size: 2.5rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .article-content h2 {
        font-size: 2rem;
    }
    
    .article-content h3 {
        font-size: 1.6rem;
    }
    
    .article-content p {
        font-size: 1.1rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        margin-top: 60px;
        padding-top: 40px;
    }
    
    .article-content img {
        margin: 30px auto;
    }
    
    .image-caption {
        margin-top: -20px;
        margin-bottom: 30px;
    }
}

@media (max-width: 480px) {
    .article-header h1 {
        font-size: 2.2rem;
    }
    
    .article-content h2 {
        font-size: 1.8rem;
    }
    
    .article-content h3 {
        font-size: 1.4rem;
    }
    
    .article-nav-item {
        padding: 20px;
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-prev, .nav-next {
        text-align: center;
    }
    
    .nav-next {
        flex-direction: column;
    }
    
    .nav-content h3 {
        font-size: 1.2rem;
        text-align: center;
    }
    
    .nav-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .related-content {
        padding: 20px;
    }
    
    .related-content h3 {
        font-size: 1.2rem;
    }
}