/* ============================================
   News3 现代化资讯门户模板样式
   采用现代设计语言，优雅美观
   ============================================ */

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

:root {
    /* 主色调 - 优雅的蓝色系 */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    /* 辅助色 */
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --danger: #ef4444;
    --success: #10b981;

    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;

    /* 文字色 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;

    /* 边框 */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* 侧边栏 */
    --sidebar-width: 280px;

    /* 过渡动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

body.news3-body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.news3-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ============================================
   侧边栏导航
   ============================================ */

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    width: 48px;
    height: 48px;
    border: none;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: all var(--transition-base);
}

.sidebar-toggle:hover {
    background: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.sidebar-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.sidebar-toggle:hover span {
    background: var(--text-inverse);
}

body.sidebar-open .sidebar-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

body.sidebar-open .sidebar-toggle span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

body.sidebar-open .sidebar-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.sidebar-nav {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform var(--transition-base);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}

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

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: var(--border-dark);
}

.sidebar-header {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--primary-gradient);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.sidebar-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--text-inverse);
    position: relative;
    z-index: 1;
    transition: transform var(--transition-base);
}

.sidebar-logo:hover {
    transform: translateX(4px);
}

.logo-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    stroke: currentColor;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.sidebar-menu {
    flex: 1;
    padding: var(--spacing-lg) 0;
    overflow-y: auto;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: 0 var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.menu-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.menu-item:hover {
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary);
    transform: translateX(4px);
}

.menu-item.active {
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.05));
    color: var(--primary);
    font-weight: 600;
}

.menu-item.active::before {
    transform: scaleY(1);
}

.menu-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    stroke: currentColor;
    transition: transform var(--transition-base);
}

.menu-item:hover .menu-icon {
    transform: scale(1.1);
}

.menu-text {
    flex: 1;
}

/* ============================================
   主内容区
   ============================================ */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--bg-secondary);
}

/* ============================================
   顶部搜索栏
   ============================================ */

.top-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.header-top {
    margin-bottom: var(--spacing-md);
}

.date-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 14px;
}

.date-text {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 16px;
}

.weekday {
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-size: 13px;
}

.search-form {
    width: 100%;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-full);
    padding: 0 var(--spacing-md);
    transition: all var(--transition-base);
    max-width: 900px;
    box-shadow: var(--shadow-sm);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1), var(--shadow-md);
    background: var(--bg-primary);
}

.search-icon {
    color: var(--text-tertiary);
    flex-shrink: 0;
    transition: color var(--transition-base);
}

.search-box:focus-within .search-icon {
    color: var(--primary);
}

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) var(--spacing-sm);
    font-size: 15px;
    outline: none;
    color: var(--text-primary);
}

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

.search-btn {
    border: none;
    background: var(--primary-gradient);
    color: var(--text-inverse);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-left: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.search-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.search-btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.search-btn:active {
    transform: translateY(0);
}

/* ============================================
   主内容区域
   ============================================ */

.news3-main {
    flex: 1;
    padding: var(--spacing-2xl) var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================
   Hero 头条区域
   ============================================ */

.news3-hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.headline-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: var(--bg-primary);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.headline-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.headline-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.headline-image {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: var(--primary-gradient);
}

.headline-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 50%, rgba(0, 0, 0, 0.85) 100%);
    z-index: 1;
}

.headline-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.headline-card:hover .headline-image img {
    transform: scale(1.08);
}

.headline-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.4) 70%, rgba(0, 0, 0, 0.9) 100%);
    z-index: 1;
}

.headline-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-2xl);
    color: var(--text-inverse);
    z-index: 2;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
}

.badge-hot {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: var(--text-inverse);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.headline-content h1 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    letter-spacing: -0.5px;
}

.headline-content p {
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.headline-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 14px;
    opacity: 0.9;
    flex-wrap: wrap;
}

.headline-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.headline-side {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.headline-side h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.headline-side h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent);
}

.side-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.side-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.side-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.side-item:hover::before {
    transform: scaleY(1);
}

.side-thumb {
    position: relative;
    width: 120px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--primary-gradient);
}

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

.side-item:hover .side-thumb img {
    transform: scale(1.1);
}

.side-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.side-info h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
}

.side-item:hover .side-info h4 {
    color: var(--primary);
}

.side-info p {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ============================================
   内容区块
   ============================================ */

.news3-section {
    margin-bottom: var(--spacing-2xl);
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-light);
    position: relative;
}

.section-head::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

.section-head h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    position: relative;
    padding-left: var(--spacing-md);
}

.section-head h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

.section-sub {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
    font-weight: 500;
}

.section-head > a {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-base);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.section-head > a::after {
    content: '→';
    transition: transform var(--transition-base);
}

.section-head > a:hover {
    color: var(--primary-dark);
    background: rgba(59, 130, 246, 0.1);
    transform: translateX(4px);
}

.section-head > a:hover::after {
    transform: translateX(4px);
}

.section-tools {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   网格布局
   ============================================ */

.news3-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.news3-grid-small {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

/* ============================================
   卡片样式
   ============================================ */

.news3-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-light);
    position: relative;
}

.news3-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent, rgba(59, 130, 246, 0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.news3-card:hover::before {
    opacity: 1;
}

.news3-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.news3-card.compact {
    flex-direction: row;
}

.news3-thumb {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: var(--primary-gradient);
    display: block;
}

.news3-card.compact .news3-thumb {
    width: 140px;
    padding-top: 0;
    height: 100px;
    flex-shrink: 0;
}

.news3-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.news3-card:hover .news3-thumb::after {
    opacity: 1;
}

.news3-thumb img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news3-card:hover .news3-thumb img {
    transform: scale(1.12);
}

.news3-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news3-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
    letter-spacing: -0.3px;
}

.news3-title:hover {
    color: var(--primary);
}

.news3-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.news3-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-weight: 500;
}

.news3-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

/* ============================================
   列表页样式
   ============================================ */

.news3-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.news3-item {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.news3-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.news3-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.news3-item:hover::before {
    transform: scaleY(1);
}

.item-thumb {
    position: relative;
    width: 240px;
    height: 140px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--primary-gradient);
}

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

.news3-item:hover .item-thumb img {
    transform: scale(1.1);
}

.item-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.item-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    transition: color var(--transition-base);
    letter-spacing: -0.3px;
}

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

.item-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.item-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-weight: 500;
}

.item-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   筛选标签
   ============================================ */

.filter-chip {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.filter-chip::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.filter-chip span {
    position: relative;
    z-index: 1;
}

.filter-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.filter-chip.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.filter-chip.active::before {
    opacity: 1;
}

/* ============================================
   分页组件
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
    flex-wrap: wrap;
}

.pagination-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.pagination-btn:hover:not(.disabled) {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.pagination-pages {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.pagination-page {
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.pagination-page:hover {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pagination-page.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

.pagination-ellipsis {
    padding: 0 var(--spacing-md);
    color: var(--text-tertiary);
    font-weight: 600;
}

/* ============================================
   空状态
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-xl);
    color: var(--text-tertiary);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-state p {
    font-size: 16px;
    font-weight: 500;
}

/* ============================================
   详情页样式
   ============================================ */

.news3-detail {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.detail-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border-light);
}

.detail-header h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 14px;
    color: var(--text-secondary);
}

.detail-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-weight: 500;
}

.detail-media {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--primary-gradient);
    box-shadow: var(--shadow-xl);
}

.detail-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-tag {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--accent);
    color: var(--text-inverse);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.detail-summary {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.detail-summary h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.detail-summary h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent);
}

.summary-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.summary-tags span {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.summary-tags span:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.summary-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.summary-list li {
    padding: var(--spacing-md) 0;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.summary-list li:last-child {
    border-bottom: none;
}

.summary-list strong {
    color: var(--text-primary);
    font-weight: 700;
    min-width: 80px;
    flex-shrink: 0;
}

.summary-desc {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.detail-player {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.detail-player h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.detail-player h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent);
}

.player-empty {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-xl);
    color: var(--text-tertiary);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.detail-content {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.detail-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
    position: relative;
}

.detail-content h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--accent);
}

.content-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* ============================================
   播放器样式
   ============================================ */

.news3-player {
    margin-top: var(--spacing-lg);
}

.player-screen {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

.player-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.control-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.control-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    min-width: 60px;
    flex-shrink: 0;
}

.control-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    flex: 1;
}

.control-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.control-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.control-btn.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

/* ============================================
   页脚样式
   ============================================ */

.news3-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

.footer-text {
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1200px) {
    .news3-hero {
        grid-template-columns: 1fr;
    }

    .news3-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }

    .news3-grid-small {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
    }

    .sidebar-toggle {
        display: flex;
    }

    .sidebar-nav {
        transform: translateX(-100%);
    }

    body.sidebar-open .sidebar-nav {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .news3-main {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .header-container {
        padding: 0 var(--spacing-md);
    }

    .news3-hero {
        gap: var(--spacing-lg);
        margin-bottom: var(--spacing-xl);
    }

    .headline-content {
        padding: var(--spacing-xl);
    }

    .headline-content h1 {
        font-size: 28px;
    }

    .news3-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }

    .news3-grid-small {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }

    .news3-item {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .item-thumb {
        width: 100%;
        height: 200px;
    }

    .news3-card.compact {
        flex-direction: column;
    }

    .news3-card.compact .news3-thumb {
        width: 100%;
        padding-top: 56.25%;
        height: auto;
    }

    .news3-detail {
        padding: var(--spacing-lg);
    }

    .detail-header h1 {
        font-size: 28px;
    }

    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .control-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .control-label {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .headline-content h1 {
        font-size: 24px;
    }

    .headline-content p {
        font-size: 15px;
    }

    .news3-grid {
        grid-template-columns: 1fr;
    }

    .news3-grid-small {
        grid-template-columns: repeat(2, 1fr);
    }

    .pagination {
        gap: var(--spacing-xs);
    }

    .pagination-page {
        min-width: 40px;
        height: 40px;
        font-size: 13px;
    }

    .section-head h2 {
        font-size: 22px;
    }
}

/* ============================================
   滚动条美化
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ============================================
   选择文本样式
   ============================================ */

::selection {
    background: var(--primary);
    color: var(--text-inverse);
}

::-moz-selection {
    background: var(--primary);
    color: var(--text-inverse);
}

/* ============================================
   新增动态元素样式
   ============================================ */

/* 页面加载动画 */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition-base);
}

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

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

.loader-text {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--primary-gradient);
    z-index: 9998;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* 阅读进度 */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(0, 0, 0, 0.05);
    z-index: 9997;
}

.reading-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 0.1s ease;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Logo脉冲动画 */
.logo-pulse {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 0.3;
        transform: scale(1.2);
    }
}

/* 菜单项波纹效果 */
.menu-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.3);
    transform: scale(0);
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 时间显示 */
.time-text {
    margin-left: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: var(--text-inverse);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* 搜索建议 */
.search-suggestions {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    border: 1px solid var(--border-light);
}

.suggestion-item {
    padding: var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-base);
    border-bottom: 1px solid var(--border-light);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--bg-secondary);
}

/* 面包屑导航 */
.breadcrumb {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) 0;
}

.breadcrumb-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-base);
}

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

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* 视图切换 */
.view-toggle {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
}

.view-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.view-btn.active {
    background: var(--primary);
    color: var(--text-inverse);
}

/* 计数徽章 */
.count-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    margin-left: var(--spacing-sm);
}

/* 操作按钮 */
.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 14px;
    font-weight: 500;
}

.action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* 卡片播放按钮 */
.thumb-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 1;
}

.news3-thumb:hover .thumb-overlay,
.item-thumb:hover .thumb-overlay {
    opacity: 1;
}

.thumb-play {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transform: scale(0.8);
    transition: transform var(--transition-base);
}

.news3-thumb:hover .thumb-play,
.item-thumb:hover .thumb-play {
    transform: scale(1);
}

.thumb-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.thumb-badge.hot-badge {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

/* 阅读更多按钮 */
.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-base);
    margin-top: var(--spacing-md);
}

.read-more:hover {
    gap: var(--spacing-sm);
    color: var(--primary-dark);
}

.read-more svg {
    transition: transform var(--transition-base);
}

.read-more:hover svg {
    transform: translateX(4px);
}

/* 卡片页脚 */
.card-footer {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

/* 统计信息 */
.item-stats {
    display: flex;
    gap: var(--spacing-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-tertiary);
    font-size: 13px;
}

/* 详情页徽章 */
.detail-badges {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.detail-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.detail-badge.highlight {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--text-inverse);
}

/* 详情页操作 */
.detail-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* 媒体全屏按钮 */
.media-fullscreen {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.media-fullscreen:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

/* 媒体标签图标 */
.tag-icon {
    font-size: 14px;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-tertiary);
    opacity: 0.5;
}

.empty-state p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.empty-action {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
}

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

/* 分享弹窗 */
.share-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.share-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.share-modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.modal-close:hover {
    background: var(--primary);
    color: var(--text-inverse);
}

.modal-body {
    padding: var(--spacing-xl);
}

.share-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    border: 2px solid var(--border-light);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.share-option:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.share-option svg {
    color: var(--primary);
}

.share-option span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 页脚样式增强 */
.footer-main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border-light);
}

.footer-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-icon {
    font-size: 24px;
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.footer-subtitle {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: var(--spacing-xs);
}

.footer-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 13px;
    color: var(--text-tertiary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
}

.footer-icp {
    margin-top: var(--spacing-sm);
    font-size: 12px;
    color: var(--text-tertiary);
}

/* 滚动动画 */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].animate {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="fadeInUp"].animate {
    animation: fadeInUp 0.6s ease-out forwards;
}

[data-animate="fadeInDown"].animate {
    animation: fadeInDown 0.6s ease-out forwards;
}

[data-animate="fadeInLeft"].animate {
    animation: fadeInLeft 0.6s ease-out forwards;
}

[data-animate="fadeInRight"].animate {
    animation: fadeInRight 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式增强 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }

    .share-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}