:root {
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #dbeafe;
    --color-secondary: #64748b;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    --color-bg: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-tertiary: #94a3b8;
    --color-text-link: #3b82f6;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    --container-max: 1200px;
    --header-height: 64px;
    --mobile-tab-height: 64px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

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

ul, ol {
    list-style: none;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content-wrapper {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 16px;
    width: 100%;
}

.main-content {
    flex: 1;
    padding: 24px 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    margin-top: 24px;
}

@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar-column {
        display: none;
    }
}

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 16px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
}

.logo-img {
    height: 36px;
    width: auto;
}

.main-nav {
    flex: 1;
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    cursor: pointer;
    position: relative;
}

.menu-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: all var(--transition-fast);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    left: 0;
    transition: all var(--transition-fast);
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    bottom: -8px;
}

.mobile-menu-btn.active .menu-icon {
    background: transparent;
}

.mobile-menu-btn.active .menu-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .menu-icon::after {
    bottom: 0;
    transform: rotate(-45deg);
}

.mobile-nav-close {
    display: none;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        right: 16px;
        top: 50%;
        transform: translateY(-50%);
        z-index: 1002;
    }
    
    .header-inner {
        position: relative;
    }
    
    /* Mobile nav overlay */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        opacity: 0;
        transition: opacity var(--transition-normal);
    }
    
    .nav-overlay.active {
        /* display: block; */
        opacity: 1;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        height: 100vh;
        background: var(--color-bg);
        padding: 20px;
        z-index: 1001;
        transition: left var(--transition-normal);
        overflow-y: auto;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 4px;
    }
    
    .nav-link {
        display: block;
        padding: 12px 16px;
    }
    
    .header-search {
        display: none;
    }
    
    /* Close button inside mobile nav */
    .mobile-nav-close {
        display: block;
        width: 100%;
        padding: 12px;
        background: var(--color-primary);
        color: white;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        margin-bottom: 16px;
        font-size: 14px;
    }
}

.header-search {
    display: flex;
    align-items: center;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.search-input {
    border: none;
    background: transparent;
    padding: 8px 16px;
    font-size: 14px;
    width: 200px;
    outline: none;
}

.search-btn {
    border: none;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

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

@media (max-width: 768px) {
    .header-search {
        display: none;
    }
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.breadcrumb a {
    color: var(--color-text-secondary);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-sep {
    color: var(--color-border);
}

.breadcrumb-current {
    color: var(--color-text);
}

.hero-section {
    margin-bottom: 32px;
}

.hero-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.article-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-link {
    display: block;
    color: inherit;
}

.card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.card-content {
    padding: 16px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.card-category {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-excerpt {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.section {
    margin-bottom: 32px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-item {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.article-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.article-item-link {
    display: flex;
    gap: 16px;
    color: inherit;
    padding: 16px;
}

@media (max-width: 640px) {
    .article-item-link {
        flex-direction: column;
    }
}

.article-thumb {
    width: 200px;
    height: 130px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

@media (max-width: 640px) {
    .article-thumb {
        width: 100%;
        height: 180px;
    }
}

.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.article-item:hover .article-thumb img {
    transform: scale(1.05);
}

.article-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-excerpt {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.article-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-widget {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.widget-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.hot-articles-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hot-article-item {
    display: block;
}

.hot-article-link {
    display: flex;
    gap: 12px;
    color: inherit;
    padding: 8px;
    margin: -8px;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.hot-article-link:hover {
    background: var(--color-bg-tertiary);
}

.hot-article-thumb {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.hot-article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hot-article-info {
    flex: 1;
    min-width: 0;
}

.hot-article-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.hot-article-meta {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.category-item {
    display: block;
}

.category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.category-link:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.category-name {
    font-weight: 500;
}

.category-count {
    font-size: 12px;
    color: var(--color-text-tertiary);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

.follow-us {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.follow-item {
    text-align: center;
}

.follow-qr {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
}

.site-footer {
    background: var(--color-text);
    color: #fff;
    margin-top: auto;
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 48px 16px 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
}

.footer-weixin img {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
    color: #fff;
}

.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--mobile-tab-height);
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    z-index: 100;
}

@media (max-width: 768px) {
    .mobile-tab-bar {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }
    
    .main-content {
        padding-bottom: calc(var(--mobile-tab-height) + 24px);
    }
}

.tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--color-text-tertiary);
    font-size: 11px;
    transition: color var(--transition-fast);
}

.tab-item.active {
    color: var(--color-primary);
}

.tab-item svg {
    width: 22px;
    height: 22px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.pagination .active {
    background: var(--color-primary);
    color: #fff;
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-text-tertiary);
}

.empty-state svg {
    margin: 0 auto 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 15px;
    margin-bottom: 8px;
}

.empty-hint {
    font-size: 13px !important;
    color: var(--color-text-tertiary);
}

.category-header {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.category-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.category-children {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.category-child-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.category-child-tag:hover {
    background: var(--color-primary);
    color: #fff;
}

.search-header {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.search-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.search-stats {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.search-form-wrapper {
    margin-bottom: 24px;
}

.search-page-form {
    display: flex;
    gap: 12px;
    max-width: 600px;
    margin: 0 auto;
}

.search-page-input {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 15px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-page-input:focus {
    border-color: var(--color-primary);
}

.search-page-btn {
    padding: 12px 24px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-page-btn:hover {
    background: var(--color-primary-hover);
}

.tags-page-header {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.tags-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.tags-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.tags-all-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    padding: 32px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.tag-cloud-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.tag-cloud-item:hover {
    background: var(--color-primary);
    color: #fff;
    transform: scale(1.05);
}

.tag-count {
    font-size: 11px;
    background: rgba(0,0,0,0.1);
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

.tag-cloud-item:hover .tag-count {
    background: rgba(255,255,255,0.2);
}

.article-detail {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.article-header {
    padding: 32px;
}

.article-title {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--color-text-tertiary);
    font-size: 13px;
    margin-bottom: 16px;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-link {
    padding: 4px 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.article-featured-image {
    width: 100%;
    max-height: 500px;
    overflow: hidden;
}

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

.article-content {
    padding: 32px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text);
}

.article-content p {
    margin-bottom: 16px;
}

.article-content h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 32px 0 16px;
}

.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 12px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: 24px 0;
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.article-content ul,
.article-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content ul li {
    list-style: disc;
}

.article-content ol li {
    list-style: decimal;
}

.article-actions {
    padding: 24px 32px;
    border-top: 1px solid var(--color-border);
}

.action-share {
    display: flex;
    align-items: center;
    gap: 12px;
}

.share-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.share-btn.weixin {
    background: #07c160;
    color: #fff;
}

.share-btn.qq {
    background: #12b7f5;
    color: #fff;
}

.share-btn.weibo {
    background: #e6162d;
    color: #fff;
}

.share-btn:hover {
    transform: scale(1.1);
}

.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}

@media (max-width: 640px) {
    .article-nav {
        grid-template-columns: 1fr;
    }
}

.nav-prev,
.nav-next {
    display: block;
    padding: 16px 20px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.nav-prev:hover,
.nav-next:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.nav-title {
    display: block;
    font-weight: 500;
    color: var(--color-text);
}

.nav-next {
    text-align: right;
}

.related-articles {
    margin-top: 32px;
}

.related-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.related-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.related-item {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.related-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.related-item a {
    display: block;
    color: inherit;
}

.related-thumb {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.related-item-title {
    font-size: 14px;
    font-weight: 500;
    padding: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}