/* 增强的CSS变量系统 - 提高灵活性 */
:root {
    /* 颜色系统 */
    --primary-color: #9AFF00;
    --primary-hover: #8AEF00;
    --text-primary: #333;
    --text-secondary: #666;
    --text-tertiary: #999;
    --text-white: #FFF;
    --bg-primary: #fff;
    --bg-secondary: #F9F9F9;
    --border-color: #BFBFBF;
    --border-light: #ddd;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --primary-shadow: rgba(0, 123, 255, 0.2);
    --primary-shadow-hover: rgba(0, 123, 255, 0.3);
    
    /* 尺寸系统 */
    --container-max-width: clamp(320px, 100%, 1200px);
    --sidebar-width: clamp(100px, 25vw, 180px);
    --content-gap: clamp(15px, 2.5vw, 25px);
    --border-radius: 0;
    
    /* 字体系统 */
    --font-size-xs: clamp(0.7rem, 1.5vw, 0.8rem);
    --font-size-sm: clamp(0.8rem, 2vw, 0.9rem);
    --font-size-base: clamp(0.9rem, 2.5vw, 1rem);
    --font-size-lg: clamp(1rem, 3vw, 1.1rem);
    --font-size-xl: clamp(1.1rem, 3.5vw, 1.3rem);
    --font-size-2xl: clamp(1.3rem, 4vw, 1.6rem);
    --font-size-3xl: clamp(1.6rem, 5vw, 2rem);
    --font-size-4xl: clamp(2rem, 6vw, 2.5rem);
    
    /* 间距系统 */
    --space-xs: clamp(0.25rem, 1vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1.5vw, 0.75rem);
    --space-md: clamp(0.75rem, 2vw, 1rem);
    --space-lg: clamp(1rem, 2.5vw, 1.5rem);
    --space-xl: clamp(1.5rem, 3vw, 2rem);
    --space-2xl: clamp(2rem, 4vw, 3rem);
    --space-3xl: clamp(2.5rem, 5vw, 4rem);
    
    /* 过渡动画 */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* 网格系统 */
    --grid-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    --grid-gap: var(--content-gap);
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #e0e0e0;
        --text-secondary: #b0b0b0;
        --text-tertiary: #888;
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --border-color: #404040;
        --border-light: #555;
        --shadow-light: rgba(255, 255, 255, 0.1);
        --shadow-medium: rgba(255, 255, 255, 0.15);
    }
}


.category-item  a {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.article-meta-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pagination li:nth-child(1), .jumpto {
    display: none;
}

.pagination .active span{
    background-color: var(--primary-color) !important;
    color: var(--text-white) !important;
    border-color: var(--primary-color) !important;
}

.img-bak {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 灵活的容器布局 */
.container-box {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-inline: var(--content-gap);
}

.content-wrapper {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    gap: var(--content-gap);
    align-items: start;
}

/* 响应式侧边栏 */
.sidebar {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: sticky;
    top: 70px;
}

.category-header {
    text-align: center;
    background-color: var(--bg-primary);
    padding: var(--space-lg) var(--space-md);
}

.category-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.05em;
}

.category-nav {
    background-color: var(--bg-secondary);
    padding: var(--space-sm);
}

.category-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.category-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-normal);
}

.category-link {
    display: block;
    padding: var(--space-lg) var(--space-md);
    text-decoration: none;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 500;
    transition: var(--transition-fast);
    text-align: center;
    letter-spacing: 0.025em;
}

.category-item.active .category-link {
    font-weight: 700;
    background-color: var(--primary-color);
    color: var(--text-white);
}

.category-link:hover,
.category-item.active .category-link:hover {
    background-color: var(--primary-hover);
    transform: translateX(4px);
    color: var(--text-white);
}

/* 灵活的主内容区域 */
.main-content {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding: 10px;
}

.content-header {
    text-align: center;
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

/* 改进的搜索框 */
.search-container {
    width: 100%;
    margin: 0 auto;
}

.search-box {
    display: flex;
    align-items: center;
    border: 2px solid var(--border-color);
    border-radius: calc(var(--border-radius) * 4);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--bg-primary);
    transition: var(--transition-normal);
    box-shadow: 0 2px 8px var(--shadow-light);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-shadow),
                0 4px 12px var(--shadow-medium);
    transform: translateY(-2px);
}

.search-icon {
    flex-shrink: 0;
    margin-right: var(--space-md);
    width: clamp(20px, 3vw, 29px);
    height: clamp(16px, 2.5vw, 24px);
}

.search-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--font-size-lg);
    background: transparent;
    color: var(--text-primary);
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

/* 响应式文章网格 - 横向布局 */
.articles-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    width: 100%;
}

/* 灵活的文章卡片 - 横向布局 */
.article-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-light);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: row;
    height: auto;
    min-height: 200px;
    align-items: center;
    padding: 20px;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.article-image {
    position: relative;
    width: 280px;
    height: 200px;
    overflow: hidden;
    flex-shrink: 0;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.article-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
    justify-content: space-between;
    padding-right: 0;
}

.article-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
    color: var(--text-primary);
}

.article-excerpt {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}


.article-date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    font-weight: 500;
}

.article-actions {
    margin-top: var(--space-md);
}

.read-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition-normal);
    text-align: center;
    min-width: max-content;
    width: 100%;
}

.read-more-btn:hover {
    color: var(--text-white);
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--primary-shadow-hover);
}

/* 加载更多按钮 */
.load-more-container {
    display: flex;
    justify-content: center;
    margin-top: var(--space-2xl);
}

.load-more-btn {
    background-color: var(--primary-color);
    color: var(--text-primary);
    border: none;
    padding: var(--space-lg) var(--space-2xl);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    min-width: max-content;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.load-more-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px var(--primary-shadow-hover);
}

.load-more-btn:active {
    transform: translateY(-1px);
}

/* 改进的响应式设计 */
@media (max-width: 1024px) {

    .category-header,.content-header {
        display: none;
    }

    .main-content, .content-wrapper {
        padding: 0;
        margin-top: 0;
    }
    
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        order: -1;
    }
    
    .category-nav {
        padding: var(--space-md);
    }
    
    .category-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: var(--space-sm);
    }
    
    .category-link {
        padding: var(--space-md);
        font-size: var(--font-size-base);
    }
    
    .category-link:hover {
        transform: translateY(-2px);
    }
    
    .articles-grid {
        gap: var(--space-md);
    }
    
    .article-card {
        min-height: 180px;
    }
    
    .article-image {
        width: 220px;
        height: 160px;
    }
}

@media (max-width: 768px) {
    .article-card {
        flex-direction: column;
        min-height: auto;
    }
    
    .article-image {
        width: 100%;
        height: 200px;
    }
    
    .category-list {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: var(--space-xs);
    }
    
    .search-box {
        padding: var(--space-md);
    }
}

@media (max-width: 480px) {
    
    .article-content {
        padding: var(--space-md);
        gap: var(--space-sm);
    }
    
    .category-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .read-more-btn {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-xs);
    }
    
    .load-more-btn {
        padding: var(--space-md) var(--space-lg);
        font-size: var(--font-size-base);
    }
}

/* 改进的动画系统 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes staggeredFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.article-card {
    animation: staggeredFadeIn 0.6s ease-out both;
}

/* 使用CSS计数器创建灵活的动画延迟 */
.articles-grid {
    counter-reset: card-counter;
}

.article-card {
    counter-increment: card-counter;
    animation-delay: calc(var(--space-xs) * counter(card-counter));
}

/* 性能优化 */
.article-image img {
    will-change: transform;
}

.article-card:hover .article-image img {
    will-change: auto;
}

/* 可访问性改进 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .article-card:hover {
        transform: none;
    }
    
    .read-more-btn:hover,
    .load-more-btn:hover {
        transform: none;
    }
}

/* 聚焦可见性 */
.category-link:focus,
.search-input:focus,
.read-more-btn:focus,
.load-more-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --border-light: #000;
        --shadow-light: rgba(0, 0, 0, 0.5);
        --shadow-medium: rgba(0, 0, 0, 0.7);
    }
}

/* 屏幕阅读器专用样式 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 文章标题链接样式 */
.article-title-link {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-normal);
    display: block;
}

.article-title-link:hover {
    color: var(--primary-color);
}

.article-title-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

/* 加载指示器样式 */
.loading-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-xl);
    margin: var(--space-lg) 0;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 搜索表单样式 */
.search-form {
    width: 100%;
}

/* 文章区域样式 */
.articles-section {
    width: 100%;
}

/* 按钮禁用状态 */
.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.load-more-btn:disabled:hover {
    background-color: var(--primary-color);
    box-shadow: none;
}


/* 悬浮时蒙版消失 */
.review-card:hover::before {
    opacity: 0;
}

.review-card:hover {
    transform: scale(1.02);
}

.review-icon {
    width: 70px !important;
    height: 70px !important;
    border-radius: 50%;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
    object-fit: cover;
    position: relative;
    z-index: 2;
}

.review-card {
    position: relative;
    background-size: cover;
    background-position: center;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.review-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}