/* 
 * AI News Hub - 主样式文件
 * 版本: 1.0.0
 */

/* 基础样式和CSS变量 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #8b5cf6;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color);
    --shadow-xl: 0 20px 25px -5px var(--shadow-color);
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #10b981;
    --accent-color: #8b5cf6;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    
    --border-color: #4b5563;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
p { margin-bottom: var(--spacing-md); }
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--primary-dark); }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: var(--primary-dark); }
.btn-secondary { background-color: var(--secondary-color); color: white; }
.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}
.btn-outline:hover { background-color: var(--primary-color); color: white; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}
.btn-icon:hover { background-color: var(--bg-tertiary); color: var(--primary-color); }
.btn-icon.active { color: var(--error-color); }

/* 导航栏 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
}
.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}
.logo i { color: var(--primary-color); font-size: 1.8rem; }
.logo .logo-img { height: 52px; width: auto; display: block; }
.logo span {
    background: linear-gradient(135deg, #2563eb 0%, #06b6d4 30%, #8b5cf6 60%, #ec4899 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: logoGradient 4s ease infinite;
    position: relative;
}
.logo span::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, #2563eb 0%, #06b6d4 30%, #8b5cf6 60%, #ec4899 100%);
    background-size: 200% 200%;
    animation: logoGradient 4s ease infinite;
    border-radius: 2px;
    opacity: 0.5;
}

@keyframes logoGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    flex: 1;
    justify-content: center;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 0 var(--spacing-sm);
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
    background-color: var(--bg-tertiary);
}
.nav-actions { display: flex; align-items: center; gap: var(--spacing-md); }
.search-box { position: relative; display: flex; align-items: center; }
.search-box i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-light);
    pointer-events: none;
}
.search-box input {
    width: 250px;
    padding: 0.75rem var(--spacing-md) 0.75rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}
.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 英雄区域 */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    text-align: center;
}
.hero-content { max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: 3rem; margin-bottom: var(--spacing-md); color: white; }
.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}
.hero-stats { display: flex; justify-content: center; gap: var(--spacing-2xl); margin-top: var(--spacing-xl); flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-size: 2.5rem; font-weight: 700; margin-bottom: var(--spacing-xs); }
.stat-label { font-size: 0.9rem; color: rgba(255, 255, 255, 0.8); text-transform: uppercase; letter-spacing: 1px; }

/* 区域标题 */
.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}
.section-title i { color: var(--primary-color); }
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}
.view-all {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: 500;
    transition: gap var(--transition-fast);
}
.view-all:hover { gap: var(--spacing-sm); }

/* 特色新闻 */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}
.featured-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}
.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}
.featured-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}
.featured-content { padding: var(--spacing-lg); }
.featured-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}
.featured-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}
.featured-excerpt { color: var(--text-secondary); margin-bottom: var(--spacing-md); }
.featured-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.875rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.featured-source { display: flex; align-items: center; gap: 4px; }
.featured-date { display: flex; align-items: center; gap: 4px; }
.featured-actions { display: flex; gap: 0.25rem; }

/* 分类网格 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}
.category-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: block;
    color: inherit;
}
.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
    color: inherit;
}
.category-icon {
    width: 64px;
    height: 64px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
    font-size: 1.5rem;
}
.category-card h3 { margin-bottom: var(--spacing-sm); color: var(--text-primary); }
.category-card p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: var(--spacing-md); }
.category-count {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

/* 新闻网格 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}
.news-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}
.news-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}
.news-category {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}
.news-title { font-size: 1.25rem; margin-bottom: var(--spacing-sm); color: var(--text-primary); }
.news-excerpt { color: var(--text-secondary); margin-bottom: var(--spacing-md); font-size: 0.95rem; }
.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.875rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.news-source { display: flex; align-items: center; gap: 4px; }
.news-info { display: flex; gap: 1rem; }

/* 热门标签 */
.trending-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}
.tag {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}
.tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

/* 页脚 */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}
.footer-section h3, .footer-section h4 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}
.footer-description { color: var(--text-secondary); margin-bottom: var(--spacing-lg); }

.social-links { display: flex; gap: var(--spacing-md); }
.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: var(--spacing-sm); }
.footer-links a { color: var(--text-secondary); transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--primary-color); }

.subscribe-form { display: flex; gap: var(--spacing-sm); margin-top: var(--spacing-md); }
.subscribe-form input {
    flex: 1;
    padding: 0.75rem var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
}
.subscribe-form input:focus { outline: none; border-color: var(--primary-color); }

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.875rem;
}
.footer-bottom p { margin-bottom: var(--spacing-xs); }
.footer-bottom a {
    color: var(--text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.875rem;
}
.footer-bottom a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* 页面头部 */
.page-header {
    padding: var(--spacing-xl) 0;
    text-align: center;
}
.page-header h1 { margin-bottom: var(--spacing-sm); }
.page-description { color: var(--text-secondary); font-size: 1.1rem; }

/* 筛选器 */
.filters {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    align-items: flex-end;
}
.filter-group { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.filter-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}
.filter-select {
    padding: 0.6rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    min-width: 140px;
}
.filter-select:focus { outline: none; border-color: var(--primary-color); }

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}
.page-numbers {
    display: flex;
    gap: var(--spacing-xs);
}
.page-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}
.page-number:hover { background-color: var(--bg-tertiary); }
.page-number.active { background-color: var(--primary-color); color: white; border-color: var(--primary-color); }

/* 加载动画 */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 空状态 */
.no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
    grid-column: 1 / -1;
}
.no-results i { font-size: 3rem; margin-bottom: var(--spacing-md); opacity: 0.5; }
.no-results h3 { margin-bottom: var(--spacing-sm); }
.no-results p { color: var(--text-light); }

/* 已读标记 */
.read { opacity: 0.7; }

/* Toast消息样式 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-width: 300px;
    max-width: 450px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: toastSlideIn 0.3s ease-out;
}
.toast-success { background: linear-gradient(135deg, #10b981, #059669); }
.toast-error { background: linear-gradient(135deg, #ef4444, #dc2626); }
.toast-warning { background: linear-gradient(135deg, #f59e0b, #d97706); }
.toast-info { background: linear-gradient(135deg, #3b82f6, #2563eb); }

.toast-content { display: flex; align-items: center; gap: 0.75rem; flex: 1; }
.toast-icon { font-size: 1.1rem; }
.toast-message { flex: 1; }
.toast-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.25rem;
    opacity: 0.7;
    transition: opacity 0.2s;
    font-size: 1rem;
}
.toast-close:hover { opacity: 1; }

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes toastSlideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* 工具提示 */
.tooltip { position: relative; display: inline-block; }
.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
}
.tooltip:hover .tooltip-text { visibility: visible; opacity: 1; }

/* 文章详情页 */
.article-header { padding: var(--spacing-xl) 0; }
.article-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}
.article-title { font-size: 2.5rem; margin-bottom: var(--spacing-md); }
.article-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.95rem;
    flex-wrap: wrap;
}
.article-meta span { display: flex; align-items: center; gap: 4px; }
.article-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}
.article-content {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.05rem;
}
.article-content p { margin-bottom: var(--spacing-lg); }

/* 关于页面 */
.about-section { padding: var(--spacing-xl) 0; }
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}
.about-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    border: 1px solid var(--border-color);
}

/* 分类页面 */
.category-page-header {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

/* 错误页面 */
.error-page {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}
.error-page i { font-size: 4rem; color: var(--error-color); margin-bottom: var(--spacing-md); }
.error-page h1 { font-size: 3rem; color: var(--text-primary); }
.error-page p { color: var(--text-secondary); font-size: 1.1rem; }

/* 文章列表样式 */
.news-list { margin-bottom: var(--spacing-xl); }

/* 骨架屏占位 */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--border-color) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .nav-links {
        gap: var(--spacing-md);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .nav-links::-webkit-scrollbar { display: none; }
    .nav-links a { flex-shrink: 0; }
    .search-box input { width: 180px; }
}

@media (max-width: 768px) {
    .nav-content { flex-direction: column; gap: var(--spacing-md); }
    .nav-links {
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: var(--spacing-sm);
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0.25rem 0;
    }
    .nav-links::-webkit-scrollbar { display: none; }
    .nav-links a { font-size: 0.85rem; padding: var(--spacing-xs) var(--spacing-sm); flex-shrink: 0; }
    .nav-actions { width: 100%; justify-content: center; }
    .search-box { flex: 1; max-width: 300px; }
    .search-box input { width: 100%; }
    
    .hero h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-stats { gap: var(--spacing-lg); }
    .stat-number { font-size: 1.8rem; }
    
    .news-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    
    .section-header { flex-direction: column; gap: var(--spacing-sm); align-items: flex-start; }
    
    .filters { flex-direction: column; align-items: stretch; }
    .filter-select { width: 100%; }
    
    .pagination { flex-wrap: wrap; }
    
    .footer-content { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    
    .article-title { font-size: 1.8rem; }
    
    .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6rem; }
    .categories-grid { grid-template-columns: 1fr; }
    .featured-grid { grid-template-columns: 1fr; }
    .featured-title { font-size: 1.2rem; }
    .news-meta { flex-direction: column; align-items: flex-start; }
    .news-info { flex-wrap: wrap; }
    .footer-content { gap: var(--spacing-lg); }
    .subscribe-form { flex-direction: column; }
}

/* 暗色主题适配 */
[data-theme="dark"] .featured-image {
    opacity: 0.8;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* 选中文本样式 */
::selection { background-color: var(--primary-color); color: white; }

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.news-card, .featured-card { animation: fadeIn 0.4s ease-out; }
.news-card:nth-child(2) { animation-delay: 0.05s; }
.news-card:nth-child(3) { animation-delay: 0.1s; }
.news-card:nth-child(4) { animation-delay: 0.15s; }
.news-card:nth-child(5) { animation-delay: 0.2s; }
.news-card:nth-child(6) { animation-delay: 0.25s; }

/* ============= 新闻卡片图片样式 ============= */
.news-card {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.news-image {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}
.news-image i {
    font-size: 2.5rem;
    color: var(--text-light);
    opacity: 0.6;
}
.news-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}
.news-body {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-body .news-title {
    font-size: 1rem;
    margin: 0.5rem 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-body .news-excerpt {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-body .news-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.news-body .news-meta {
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* 新闻网格 */
.news-grid-inner {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* ============= 特色卡片图片样式 ============= */
.featured-card {
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    overflow: hidden;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-color);
}

.featured-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}
.featured-image i {
    font-size: 3rem;
    color: var(--text-light);
    opacity: 0.5;
}
.featured-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.2), transparent);
}
.featured-content {
    padding: 1.25rem;
}
.featured-content .featured-title {
    font-size: 1.15rem;
    margin: 0.75rem 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

/* ============= 文章详情模态框 ============= */
.article-detail-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.article-detail-category {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}
.article-detail-source,
.article-detail-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.article-detail-source i,
.article-detail-date i {
    margin-right: 0.25rem;
}

.article-detail-title {
    font-size: 1.6rem;
    line-height: 1.35;
    margin: 0.75rem 0 1rem;
    color: var(--text-primary);
}

.article-detail-body {
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--text-secondary);
}
.article-detail-body p {
    margin-bottom: 1rem;
}
.article-detail-full {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.article-source-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    text-decoration: none;
    transition: opacity 0.2s;
}
.article-source-link:hover {
    opacity: 0.9;
}

/* ============= 评论系统样式 ============= */
.article-comments-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.comments-title {
    font-size: 1.15rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.comments-title i {
    margin-right: 0.5rem;
}

/* 评论表单 */
.comment-form {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
}

.comment-form-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.comment-form-row input {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.85rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s;
}
.comment-form-row input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)20;
}

.comment-input-content {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.85rem;
    resize: vertical;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.2s;
}
.comment-input-content:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)20;
}

.comment-form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.5rem;
}

.comment-char-count {
    font-size: 0.75rem;
    color: var(--text-light);
}

.comment-form-footer .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}
.comment-form-footer .btn i {
    margin-right: 0.4rem;
}

/* 评论列表 */
.comments-loading {
    text-align: center;
    padding: 1rem;
    color: var(--text-secondary);
}

.no-comments {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}
.no-comments i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}
.no-comments p {
    font-size: 0.9rem;
}

.comment-item {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}
.comment-item:last-child {
    border-bottom: none;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.comment-body {
    flex: 1;
    min-width: 0;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.comment-author {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.comment-time {
    font-size: 0.75rem;
    color: var(--text-light);
}

.comment-content {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.comment-actions {
    display: flex;
    gap: 0.75rem;
}

.comment-btn {
    background: none;
    border: none;
    font-size: 0.78rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.comment-btn:hover {
    color: var(--primary-color);
    background: var(--bg-tertiary);
}
.comment-btn.liked {
    color: var(--primary-color);
}

/* ============= 热门话题标签样式 ============= */
.topic-tags-section {
    margin-bottom: 2rem;
}

.topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.topic-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.topic-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-secondary);
    transform: translateY(-1px);
}
.topic-tag.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px var(--primary-color)40;
}
.topic-tag.active:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* Trending页面消息头 */
.page-header {
    padding: 2rem 0 1rem;
}
.page-header h1 {
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}
.page-header h1 i {
    margin-right: 0.5rem;
}
.page-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Section header with count */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.news-count-badge {
    font-size: 0.85rem;
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Trending新闻网格 */
.trending-news-section {
    padding-bottom: 3rem;
}

/* 深色模式适配 */
[data-theme="dark"] .modal-overlay {
    background: rgba(0,0,0,0.75);
}
[data-theme="dark"] .modal-content {
    background: var(--bg-primary);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
[data-theme="dark"] .modal-close {
    background: rgba(255,255,255,0.15);
}
[data-theme="dark"] .modal-close:hover {
    background: rgba(255,255,255,0.25);
}
[data-theme="dark"] .comment-form {
    background: var(--bg-tertiary);
}
[data-theme="dark"] .topic-tag {
    border-color: var(--border-color);
}
[data-theme="dark"] .topic-tag:hover {
    border-color: var(--primary-color);
}
[data-theme="dark"] .topic-tag.active {
    border-color: var(--primary-color);
}

/* 响应式 - 文章模态框 */
@media (max-width: 768px) {
    .article-modal {
        padding: 0;
        align-items: flex-end;
    }
    .modal-content {
        max-height: 95vh;
        border-radius: 16px 16px 0 0;
    }
    .modal-image {
        height: 200px;
    }
    .modal-body {
        padding: 1rem 1.25rem 1.5rem;
    }
    .article-detail-title {
        font-size: 1.25rem;
    }
    .comment-form-row {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .news-grid-inner {
        grid-template-columns: 1fr;
    }
    .featured-image {
        height: 150px;
    }
    .modal-image {
        height: 160px;
    }
    .topic-tag {
        font-size: 0.78rem;
        padding: 0.4rem 0.75rem;
    }
}

/* ========== 语言标签 ========== */
.lang-tag {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    z-index: 2;
    letter-spacing: 0.5px;
}
.lang-tag.lang-zh {
    background: rgba(239, 68, 68, 0.85);
    color: #fff;
}
.lang-tag.lang-en {
    background: rgba(37, 99, 235, 0.85);
    color: #fff;
}
.lang-tag.lang-bi {
    background: linear-gradient(135deg, rgba(239,68,68,0.85), rgba(37,99,235,0.85));
    color: #fff;
}

.lang-switch-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 2px 10px;
    font-size: 0.72rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 3px;
    transition: all 0.2s;
    margin-left: auto;
}
.lang-switch-btn:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.btn-lang {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s;
}
.btn-lang:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.news-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ========== 翻译按钮 ========== */
.translate-btn {
    position: absolute;
    bottom: 8px;
    left: 8px;
    z-index: 3;
    background: rgba(0,0,0,0.65);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 4px 10px;
    font-size: 0.72rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    backdrop-filter: blur(4px);
    transition: all 0.2s;
    opacity: 0.85;
}
.translate-btn:hover {
    background: var(--primary-color);
    opacity: 1;
    transform: scale(1.05);
}
.translate-btn.translated {
    background: rgba(16, 185, 129, 0.85);
}
.translate-btn:disabled {
    cursor: wait;
    opacity: 0.6;
}

/* ========== 首页新增样式 ========== */

/* 分类卡片动态加载 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 1rem;
    border-radius: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text-primary);
}
.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}
.category-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}
.category-card h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.category-card p { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.category-count { font-size: 0.85rem; font-weight: 600; }

/* 文章模态框 */
.article-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.2s ease-out;
}
.article-modal {
    background: var(--bg-primary);
    border-radius: 20px;
    max-width: 720px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    opacity: 1;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: slideUp 0.3s ease-out;
}
.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.5);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.modal-close:hover { background: var(--primary-color); transform: scale(1.1); }
.modal-hero {
    width: 100%;
    max-height: 320px;
    overflow: hidden;
    position: relative;
    border-radius: 20px 20px 0 0;
    flex-shrink: 0;
}
.modal-hero img { width: 100%; height: 320px; object-fit: cover; display: block; }
.modal-placeholder {
    width: 100%; height: 200px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary-color)20, var(--accent-color)20);
    font-size: 4rem; color: var(--text-light);
}
.modal-body { 
    padding: 1.5rem; 
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}
#articleModalBody {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}
.article-meta-bar {
    display: flex; flex-wrap: wrap; gap: 1rem; align-items: center;
    margin-bottom: 1rem; font-size: 0.85rem; color: var(--text-secondary);
}
.category-badge {
    padding: 0.25rem 0.75rem; border-radius: 20px;
    font-weight: 500; font-size: 0.8rem;
}
.modal-title { font-size: 1.5rem; line-height: 1.4; margin-bottom: 1rem; }
.modal-content { font-size: 1rem; line-height: 1.8; color: var(--text-secondary); }
.modal-content p { margin-bottom: 1rem; }
.modal-actions {
    display: flex; gap: 0.75rem; margin: 1.5rem 0;
    padding: 1rem 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
}
.modal-comments { margin-top: 1rem; }
.modal-comments h3 { margin-bottom: 1rem; font-size: 1.1rem; }

/* 特色卡片 */
.featured-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}
.featured-card {
    border-radius: 16px;
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}
.featured-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.featured-0 { grid-row: span 2; }
.featured-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.featured-0 .featured-image { height: 260px; }
.featured-content {
    padding: 1rem;
}
.featured-content h3 {
    font-size: 1rem;
    line-height: 1.4;
    margin: 0.5rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-0 .featured-content h3 { font-size: 1.15rem; }
.featured-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-category {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}
.featured-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* 加载动画 */
.loading-spinner {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}
.loading-spinner .spinner {
    width: 36px; height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 无结果样式 */
.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}
.no-results i { font-size: 2.5rem; color: var(--text-light); margin-bottom: 0.75rem; display: block; }
.no-results h3 { margin-bottom: 0.5rem; }

/* 语言标签在特色卡片上的适配 */
.featured-image .lang-tag { z-index: 5; }

/* 响应式 */
@media (max-width: 768px) {
    .featured-grid { grid-template-columns: 1fr; }
    .featured-0 { grid-row: span 1; }
    .featured-0 .featured-image { height: 200px; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .article-modal { max-height: 95vh; margin: 0.5rem; }
    .modal-hero img { height: 200px; }
    .modal-actions { flex-direction: column; }
    .modal-actions .btn { width: 100%; justify-content: center; }
}

    /* ========== 热门话题卡片系统 v3 豪华版 - 精美的卡片设计 ========== */

/* 热门卡片网格 */
.trending-cards-grid {
    min-height: 200px;
}

.trending-cards-inner {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(370px, 1fr));
    gap: 1.6rem;
}

/* 热门卡片 - 高级材质设计 (基础版) */
.trending-card {
    position: relative;
    background: var(--bg-primary);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
    border: 1px solid var(--border-color);
}
.trending-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.10),
                0 8px 20px rgba(37, 99, 235, 0.06);
    border-color: var(--primary-color)60;
}

/* 排名徽章 - 3D立体浮雕风格 */
.trending-rank {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 5;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.25),
                inset 0 1px 0 rgba(255,255,255,0.3),
                inset 0 -2px 4px rgba(0,0,0,0.15);
    text-shadow: 0 1px 3px rgba(0,0,0,0.25);
    letter-spacing: 0.5px;
    font-family: 'Inter', sans-serif;
}

/* 奖牌徽章 - 反重力悬浮动画 */
.trending-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    z-index: 6;
    font-size: 2.4rem;
    filter: drop-shadow(0 4px 12px rgba(255, 215, 0, 0.35));
    animation: medalFloat 3s ease-in-out infinite;
    transition: transform 0.3s ease;
}
.trending-card:hover .trending-badge {
    animation: medalFloatHover 2s ease-in-out infinite;
}
@keyframes medalFloat {
    0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
    25% { transform: translateY(-4px) rotate(-4deg) scale(1.05); }
    75% { transform: translateY(-4px) rotate(4deg) scale(1.05); }
}
@keyframes medalFloatHover {
    0%, 100% { transform: translateY(-2px) rotate(-2deg) scale(1.1); }
    50% { transform: translateY(-8px) rotate(3deg) scale(1.15); }
}

/* 卡片图片区 - 固定比例+渐变遮罩 */
.trending-card-image {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255,255,255,0.4);
    flex-shrink: 0;
    position: relative;
    transition: all 0.5s ease;
}
.trending-card:hover .trending-card-image {
    transform: scale(1.03);
}
.trending-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65%;
    background: linear-gradient(to top, var(--bg-primary) 10%, transparent 100%);
    pointer-events: none;
}

/* 卡片主体 - 浮动在图片上 */
.trending-card-body {
    padding: 0.75rem 1.2rem 1.1rem;
    display: flex;
    flex-direction: column;
    flex: 1;
    margin-top: -35px;
    position: relative;
    z-index: 2;
}

.trending-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

/* 分类标签 - 毛玻璃半透明风格 */
.news-category-sm {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.65rem;
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    backdrop-filter: blur(4px);
    border: 1px solid var(--border-color);
}

/* 标题 - 两行截断 */
.trending-card-title {
    font-size: 1rem;
    line-height: 1.45;
    margin-bottom: 0.4rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-primary);
    font-weight: 650;
    transition: color 0.2s;
}
.trending-card:hover .trending-card-title {
    color: var(--primary-color);
}

/* 摘要文本 */
.trending-card-excerpt {
    font-size: 0.8rem;
    color: var(--text-light);
    line-height: 1.55;
    margin-bottom: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 底部元数据 */
.trending-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.73rem;
    color: var(--text-light);
    margin-bottom: 0.7rem;
}
.trending-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* 卡片底部栏 - 带分隔装饰线 */
.trending-card-footer {
    margin-top: auto;
    padding-top: 0.7rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 评论统计 + 热度条 */
.trending-comment-stats {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comment-count-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color)10, var(--primary-color)06);
    padding: 0.25rem 0.7rem 0.25rem 0.5rem;
    border-radius: 20px;
    border: 1px solid var(--primary-color)15;
}
.comment-count-badge i {
    font-size: 0.68rem;
}

/* 热度条 */
.heat-bar-container {
    width: 52px;
    height: 5px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}
.heat-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: linear-gradient(90deg, var(--primary-color), #60a5fa);
}
.heat-label {
    font-size: 0.65rem;
    color: var(--text-light);
    font-weight: 600;
    min-width: 26px;
    letter-spacing: 0.2px;
}

/* 讨论按钮 */
.discuss-btn {
    font-size: 0.72rem !important;
    padding: 0.35rem 0.85rem !important;
    border-radius: 20px !important;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6) !important;
    box-shadow: 0 2px 10px var(--primary-color)30 !important;
    font-weight: 600 !important;
    letter-spacing: 0.2px !important;
    transition: all 0.3s ease !important;
    color: #fff !important;
    border: none !important;
}
.discuss-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 20px var(--primary-color)50 !important;
}
.discuss-btn i {
    font-size: 0.68rem;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
    border-radius: 20px;
}

/* 无结果时骨架动画 */
.trending-card-skeleton {
    background: var(--bg-primary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    animation: skeletonPulse 1.5s ease-in-out infinite;
}
@keyframes skeletonPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ===== 电脑端宽屏优化 - 豪华卡片（≥1200px） ===== */
@media (min-width: 1200px) {
    .trending-cards-inner {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    .trending-card {
        border-radius: 24px;
    }
    .trending-card-image {
        height: 220px;
    }
    .trending-card-body {
        padding: 1rem 1.6rem 1.3rem;
    }
    .trending-card-title {
        font-size: 1.2rem;
        line-height: 1.5;
        -webkit-line-clamp: 2;
    }
    .trending-card-excerpt {
        font-size: 0.88rem;
        -webkit-line-clamp: 3;
        margin-bottom: 0.85rem;
    }
    .trending-card-meta {
        font-size: 0.8rem;
        margin-bottom: 0.9rem;
    }
    .trending-rank {
        width: 52px;
        height: 52px;
        font-size: 1.4rem;
        border-radius: 16px;
        top: 16px;
        left: 16px;
    }
    .trending-badge {
        font-size: 3rem;
        top: -6px;
        right: -6px;
    }
    .comment-count-badge {
        font-size: 0.88rem;
        padding: 0.3rem 0.9rem 0.3rem 0.6rem;
    }
    .discuss-btn {
        font-size: 0.8rem !important;
        padding: 0.45rem 1.1rem !important;
    }
    .trending-card-footer {
        padding-top: 0.85rem;
    }
    .heat-bar-container {
        width: 60px;
        height: 6px;
    }
    .news-category-sm {
        font-size: 0.75rem;
        padding: 0.25rem 0.75rem;
    }
}

/* ===== 中大型电脑端（992-1199px） ===== */
@media (min-width: 992px) and (max-width: 1199px) {
    .trending-cards-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.8rem;
    }
    .trending-card-image {
        height: 200px;
    }
    .trending-card-body {
        padding: 0.9rem 1.4rem 1.2rem;
    }
    .trending-card-title {
        font-size: 1.1rem;
        line-height: 1.5;
    }
    .trending-card-excerpt {
        font-size: 0.85rem;
        -webkit-line-clamp: 3;
    }
    .trending-rank {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
        border-radius: 15px;
    }
    .trending-badge {
        font-size: 2.6rem;
    }
}

/* ===== 小型电脑/大平板（768-991px） ===== */
@media (min-width: 768px) and (max-width: 991px) {
    .trending-cards-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.3rem;
    }
    .trending-card-image {
        height: 175px;
    }
    .trending-card-title {
        font-size: 1rem;
    }
    .trending-rank {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
        top: 12px;
        left: 12px;
    }
    .trending-badge {
        font-size: 2.2rem;
    }
}

/* 热门卡片 - 高级材质设计 */
.trending-card {
    position: relative;
    background: var(--bg-primary);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
    border: 1px solid var(--border-color);
}
.trending-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.10),
                0 8px 20px rgba(37, 99, 235, 0.06);
    border-color: var(--primary-color)60;
}

/* 排名徽章 - 3D立体浮雕风格 */
.trending-rank {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 5;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.25),
                inset 0 1px 0 rgba(255,255,255,0.3),
                inset 0 -2px 4px rgba(0,0,0,0.15);
    text-shadow: 0 1px 3px rgba(0,0,0,0.25);
    letter-spacing: 0.5px;
    font-family: 'Inter', sans-serif;
}

/* 奖牌徽章 - 反重力悬浮动画 */
.trending-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    z-index: 6;
    font-size: 2.4rem;
    filter: drop-shadow(0 4px 12px rgba(255, 215, 0, 0.35));
    animation: medalFloat 3s ease-in-out infinite;
    transition: transform 0.3s ease;
}
.trending-card:hover .trending-badge {
    animation: medalFloatHover 2s ease-in-out infinite;
}
@keyframes medalFloat {
    0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
    25% { transform: translateY(-4px) rotate(-4deg) scale(1.05); }
    75% { transform: translateY(-4px) rotate(4deg) scale(1.05); }
}
@keyframes medalFloatHover {
    0%, 100% { transform: translateY(-2px) rotate(-2deg) scale(1.1); }
    50% { transform: translateY(-8px) rotate(3deg) scale(1.15); }
}

/* 卡片图片区 - 固定比例+渐变色渐变遮罩 */
.trending-card-image {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255,255,255,0.4);
    flex-shrink: 0;
    position: relative;
    transition: all 0.5s ease;
}
.trending-card:hover .trending-card-image {
    transform: scale(1.03);
}
.trending-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65%;
    background: linear-gradient(to top, var(--bg-primary) 10%, transparent 100%);
    pointer-events: none;
}

/* 卡片主体 - 浮动在图片上 */
.trending-card-body {
    padding: 0.75rem 1.2rem 1.1rem;
    display: flex;
    flex-direction: column;
    flex: 1;
    margin-top: -35px;
    position: relative;
    z-index: 2;
}

.trending-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

/* 分类标签 - 毛玻璃半透明风格 */
.news-category-sm {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.65rem;
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    backdrop-filter: blur(4px);
    border: 1px solid var(--border-color);
}

/* 标题 - 两行截断 + 吸引眼球 */
.trending-card-title {
    font-size: 1rem;
    line-height: 1.45;
    margin-bottom: 0.4rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-primary);
    font-weight: 650;
    transition: color 0.2s;
}
.trending-card:hover .trending-card-title {
    color: var(--primary-color);
}

/* 摘要文本 - 柔和灰色 */
.trending-card-excerpt {
    font-size: 0.8rem;
    color: var(--text-light);
    line-height: 1.55;
    margin-bottom: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 底部元数据 - 紧凑 */
.trending-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.73rem;
    color: var(--text-light);
    margin-bottom: 0.7rem;
}
.trending-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* 卡片底部栏 - 带分隔装饰线 */
.trending-card-footer {
    margin-top: auto;
    padding-top: 0.7rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 评论统计 + 热度条组合 - 视觉统一 */
.trending-comment-stats {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comment-count-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color)10, var(--primary-color)06);
    padding: 0.25rem 0.7rem 0.25rem 0.5rem;
    border-radius: 20px;
    border: 1px solid var(--primary-color)15;
}
.comment-count-badge i {
    font-size: 0.68rem;
}

/* 热度条 - 渐变+微内阴影 */
.heat-bar-container {
    width: 52px;
    height: 5px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.heat-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: linear-gradient(90deg, var(--primary-color), #60a5fa);
}

.heat-label {
    font-size: 0.65rem;
    color: var(--text-light);
    font-weight: 600;
    min-width: 26px;
    letter-spacing: 0.2px;
}

/* 讨论按钮 - 渐变+发光 */
.discuss-btn {
    font-size: 0.72rem !important;
    padding: 0.35rem 0.85rem !important;
    border-radius: 20px !important;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6) !important;
    box-shadow: 0 2px 10px var(--primary-color)30 !important;
    font-weight: 600 !important;
    letter-spacing: 0.2px !important;
    transition: all 0.3s ease !important;
    color: #fff !important;
    border: none !important;
}
.discuss-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 20px var(--primary-color)50 !important;
}
.discuss-btn i {
    font-size: 0.68rem;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
    border-radius: 20px;
}

/* 无结果时骨架动画 */
.trending-card-skeleton {
    background: var(--bg-primary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    animation: skeletonPulse 1.5s ease-in-out infinite;
}
@keyframes skeletonPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ===== 亮色模式专属优化 ===== */
[data-theme="light"] .trending-card {
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.06);
}
[data-theme="light"] .trending-card:hover {
    border-color: var(--primary-color)50;
}
[data-theme="light"] .trending-card-image::after {
    background: linear-gradient(to top, #ffffff 10%, transparent 100%);
}

/* ===== 深色模式适配 ===== */
[data-theme="dark"] .trending-card {
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    border-color: rgba(255,255,255,0.06);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15);
}
[data-theme="dark"] .trending-card:hover {
    border-color: var(--primary-color)70;
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.12),
                0 8px 20px rgba(0,0,0,0.4);
}
[data-theme="dark"] .trending-card-image::after {
    background: linear-gradient(to top, #1a1a2e 10%, transparent 100%);
}
[data-theme="dark"] .trending-card-footer {
    border-color: rgba(255,255,255,0.06);
}
[data-theme="dark"] .trending-card-title {
    color: #e2e8f0;
}
[data-theme="dark"] .trending-card:hover .trending-card-title {
    color: #60a5fa;
}
[data-theme="dark"] .comment-count-badge {
    background: linear-gradient(135deg, var(--primary-color)25, var(--primary-color)12);
    border-color: var(--primary-color)30;
    color: #60a5fa;
}
[data-theme="dark"] .heat-bar-container {
    background: rgba(255,255,255,0.08);
}
[data-theme="dark"] .heat-label {
    color: rgba(255,255,255,0.4);
}
[data-theme="dark"] .trending-card-meta {
    color: rgba(255,255,255,0.35);
}
[data-theme="dark"] .trending-card-excerpt {
    color: rgba(255,255,255,0.45);
}
[data-theme="dark"] .news-category-sm {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.6);
    border-color: rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
}

/* 响应式 */
@media (max-width: 768px) {
    .trending-cards-inner {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .trending-card-image {
        height: 160px;
    }
    .trending-card-title {
        font-size: 0.9rem;
    }
    .trending-badge {
        font-size: 2rem;
        top: -2px;
        right: -2px;
    }
    .trending-rank {
        width: 38px;
        height: 38px;
        font-size: 1rem;
        top: 10px;
        left: 10px;
    }
}

@media (max-width: 480px) {
    .trending-cards-inner {
        grid-template-columns: 1fr;
        gap: 0.85rem;
    }
    .trending-card-footer {
        flex-direction: column;
        gap: 0.5rem;
        align-items: stretch;
    }
    .discuss-btn {
        width: 100%;
        justify-content: center;
    }
    .trending-card-image {
        height: 140px;
    }
}

/* ===== 评论高亮特效 ===== */
.comment-highlight {
    animation: commentHighlightIn 0.6s ease-out;
    border-left: 3px solid var(--primary-color) !important;
    padding-left: calc(0.75rem - 3px) !important;
    background: linear-gradient(90deg, var(--primary-color)08, transparent 80%) !important;
    border-radius: 0 8px 8px 0;
}

@keyframes commentHighlightIn {
    0% {
        background: var(--primary-color)25;
        transform: translateX(-8px);
        opacity: 0.5;
    }
    50% {
        background: var(--primary-color)15;
        transform: translateX(4px);
        opacity: 1;
    }
    100% {
        background: linear-gradient(90deg, var(--primary-color)08, transparent 80%);
        transform: translateX(0);
    }
}

/* 顶部栏样式（关闭按钮） */
.modal-topbar {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    flex-shrink: 0;
    z-index: 10;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    border-radius: 16px 16px 0 0;
}

.write-comment-btn-meta {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--primary-color) !important;
    font-size: 0.78rem !important;
    padding: 0.28rem 0.75rem !important;
    border-radius: 20px !important;
    transition: all 0.2s ease !important;
    margin-left: auto;
    flex-shrink: 0;
}
.write-comment-btn-meta:hover {
    background: var(--primary-color) !important;
    color: #fff !important;
    border-color: var(--primary-color) !important;
}
.write-comment-btn-meta i {
    font-size: 0.7rem;
    margin-right: 3px;
}

/* 固定不滚动的元信息栏 */
.modal-meta-sticky {
    flex-shrink: 0;
    padding: 0.6rem 1.2rem;
    margin: 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    z-index: 5;
}
.modal-meta-sticky .article-meta-bar {
    margin-bottom: 0;
}

/* 评论表单样式（modal内） */
.modal-comments .comment-form {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}
.modal-comments .comment-form textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.85rem;
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.modal-comments .comment-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)15;
}
.comment-author-input {
    width: 100%;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.82rem;
    margin-bottom: 0.5rem;
    font-family: inherit;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.comment-author-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-color)15;
}
.modal-comments .comment-form .submit-comment-btn {
    margin-top: 0.5rem;
    font-size: 0.82rem;
    padding: 0.45rem 1.2rem;
    border-radius: 20px;
}
.modal-comments .comment-form .submit-comment-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

[data-theme="dark"] .comment-highlight {
    border-left-color: #60a5fa !important;
    background: linear-gradient(90deg, rgba(96, 165, 250, 0.12), transparent 80%) !important;
}
[data-theme="dark"] .write-comment-btn-meta {
    background: rgba(255,255,255,0.06) !important;
    border-color: rgba(255,255,255,0.1) !important;
    color: #60a5fa !important;
}
[data-theme="dark"] .write-comment-btn-meta:hover {
    background: var(--primary-color) !important;
    color: #fff !important;
    border-color: var(--primary-color) !important;
}
[data-theme="dark"] .modal-topbar {
    background: #1a1a2e;
    border-bottom-color: rgba(255,255,255,0.06);
}

/* ===== 评论点赞按钮 ===== */
.comment-footer {
    margin-top: 0.4rem;
    display: flex;
    align-items: center;
}

.comment-like-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-size: 0.75rem;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.2s ease;
    font-family: inherit;
}
.comment-like-btn:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}
.comment-like-btn.liked {
    color: var(--primary-color);
}
.comment-like-btn.liked i {
    font-weight: 900;
}
.comment-like-btn i {
    font-size: 0.78rem;
    transition: transform 0.2s;
}
.comment-like-btn:hover i {
    transform: scale(1.15);
}
.comment-like-btn .like-count {
    font-weight: 600;
    min-width: 12px;
}

[data-theme="dark"] .comment-like-btn:hover {
    background: rgba(255,255,255,0.06);
}
[data-theme="dark"] .comment-like-btn.liked {
    color: #60a5fa;
}

/* ===== 访问统计模块 ===== */
.visit-stats {
    margin-top: 0.8rem;
    padding: 0.5rem 0.7rem;
    background: var(--bg-tertiary);
    border-radius: 10px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-wrap: wrap;
    border: 1px solid var(--border-color);
    transition: background 0.2s, border-color 0.2s;
}
.visit-stats i {
    color: var(--primary-color);
    font-size: 0.85rem;
}
.visit-stats span {
    font-weight: 600;
    color: var(--text-primary);
}
.visit-stats[onclick] {
    cursor: pointer;
}
.visit-stats[onclick]:hover {
    background: var(--primary-color)08;
    border-color: var(--primary-color)30;
}

[data-theme="dark"] .visit-stats {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.06);
}
[data-theme="dark"] .visit-stats[onclick]:hover {
    background: rgba(96,165,250,0.08);
    border-color: rgba(96,165,250,0.2);
}

/* ===== 管理员统计详情页 ===== */
.stats-detail-container {
    padding: 1.5rem 0;
}
.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stats-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.2rem;
    text-align: center;
    transition: transform 0.2s;
}
.stats-card:hover {
    transform: translateY(-2px);
}
.stats-card .stats-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.3rem;
}
.stats-card .stats-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.stats-daily-chart {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.2rem;
    overflow-x: auto;
}
.stats-daily-chart h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.stats-daily-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.stats-daily-table th {
    text-align: left;
    padding: 0.6rem 0.8rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.stats-daily-table td {
    padding: 0.5rem 0.8rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.stats-daily-table tr:last-child td {
    border-bottom: none;
}
.stats-daily-table .bar-cell {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.stats-daily-table .bar {
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary-color), #60a5fa);
    transition: width 0.5s ease;
    min-width: 4px;
}
.stats-daily-table .bar-label {
    font-size: 0.75rem;
    color: var(--text-light);
    min-width: 30px;
    text-align: right;
}

[data-theme="dark"] .stats-card {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.06);
}
[data-theme="dark"] .stats-daily-chart {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.06);
}
[data-theme="dark"] .stats-daily-table th {
    background: rgba(255,255,255,0.06);
}