/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    --background-color: #ffffff;
    --surface-color: #fafbfc;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08);
    --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 10px 20px -4px rgb(0 0 0 / 0.12);
    --shadow-xl: 0 25px 50px -8px rgb(0 0 0 / 0.15);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Modern Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--background-color);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Modern Buttons */
.btn-primary, .btn-outline, .btn-primary-large, .btn-outline-large {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: var(--font-size-sm);
    letter-spacing: 0.025em;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
}

.btn-primary-large:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-outline-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.btn-outline-large:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--primary-color);
}

.nav-logo i {
    font-size: var(--font-size-xl);
}

.nav-logo .logo-image {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: 50%;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color 0.2s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.language-switch {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    font-size: var(--font-size-sm);
}

.language-switch:hover {
    background: var(--primary-color);
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Modern Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    padding-top: 80px; /* 为固定导航栏留出空间 */
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?w=1920&h=1080&fit=crop&crop=center') center/cover;
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.85) 0%, rgba(139, 92, 246, 0.85) 50%, rgba(236, 72, 153, 0.85) 100%);
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 1;
    animation: heroFadeIn 1s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.6;
    margin-bottom: var(--spacing-3xl);
    color: rgba(255, 255, 255, 0.95);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

/* Hero Animation */
@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Stats Title */
.hero-stats-title {
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin: var(--spacing-3xl) 0 var(--spacing-md) 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.01em;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
    margin-bottom: 5rem;
    opacity: 0.9;
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 100px;
}

.stat strong {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.stat span {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* Blog Section */
.blog-section {
    padding: var(--spacing-3xl) 0;
    background: var(--surface-color);
}

/* 博客布局选择器 */
.blog-view-toggle {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.view-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.view-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 紧凑列表布局 */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.blog-list-item {
    display: flex;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.blog-list-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
    border-color: var(--primary-color);
}

.blog-list-image {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    overflow: hidden;
}

.blog-list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.blog-list-item:hover .blog-list-image img {
    transform: scale(1.05);
}

.blog-list-content {
    flex: 1;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.blog-list-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.blog-list-category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.blog-list-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-list-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.blog-list-excerpt {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-list-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
}

.blog-list-read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.2s ease;
}

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

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.blog-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.blog-card.featured {
    grid-column: span 2;
}

.blog-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.blog-card.featured .blog-image {
    height: 300px;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.blog-category {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

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

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.blog-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.blog-content h3 {
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.blog-card.featured h3 {
    font-size: var(--font-size-xl);
}

.blog-content p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.load-more-container {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* 虚拟滚动优化 - 为大量文章加载优化性能 */
.blog-grid {
    contain: layout style;
    will-change: transform;
}

.blog-card {
    contain: layout style paint;
    transform: translateZ(0); /* 启用硬件加速 */
}

/* 分页优化样式 */
.pagination-container {
    display: grid;
    gap: var(--spacing-md);
    justify-items: center;
}

.pagination-label {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    background: rgba(99, 102, 241, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.pagination-pages {
    display: flex;
    gap: var(--spacing-sm);
}

.page-btn {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.page-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-prev[disabled], .pagination-next[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.features {
    padding: var(--spacing-3xl) 0;
    background: var(--surface-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
    font-size: var(--font-size-xl);
}

.feature-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* FAQ Section */
.faq {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #e2e8f0 50%, transparent 100%);
}

.faq::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #e2e8f0 50%, transparent 100%);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-4xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.faq-question {
    padding: var(--spacing-xl) var(--spacing-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-question:hover {
    background: var(--surface-color);
}

.faq-question h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
    flex: 1;
    margin-right: var(--spacing-lg);
}

.faq-question i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--surface-color);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-item.active {
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15);
    border-color: var(--primary-color);
}

.faq-answer p {
    padding: 0 var(--spacing-2xl) var(--spacing-xl);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.faq-answer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer a:hover {
    color: var(--primary-dark);
    border-bottom-color: var(--primary-color);
}

/* Blog Text - Force Black Color for Maximum Contrast */
.blog-content p,
.blog-list-excerpt,
.blog-content h3,
.blog-list-title {
    color: #000000 !important; /* Pure black text */
}

.blog-meta,
.blog-list-meta,
.blog-meta span {
    color: #333333 !important; /* Dark gray for meta info */
}

.read-more,
.blog-list-read-more {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
}

/* Blog Title Links */
.blog-title-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.blog-title-link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* About Section */
.about {
    padding: var(--spacing-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text h2 {
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    justify-content: center;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
    min-width: 150px;
}

.feature-item i {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.feature-item span {
    font-weight: 500;
    color: var(--text-primary);
}

.about-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.destination-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.2s ease;
}

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

.destination-link::after {
    content: '→';
    transition: transform 0.2s ease;
}

.destination-link:hover::after {
    transform: translateX(2px);
}

.destinations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.destination-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.destination-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.destination-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.destination-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.destination-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--secondary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

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

.destination-content h3 {
    margin-bottom: var(--spacing-md);
}

.destination-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.stat i {
    color: var(--primary-color);
}

/* Community */
.community {
    padding: var(--spacing-3xl) 0;
    background: var(--surface-color);
}

.community-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
}

.post-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.post-card:hover {
    box-shadow: var(--shadow-md);
}

.post-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.post-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.post-info h4 {
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.post-time {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

.post-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.post-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.post-stats span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    transition: color 0.2s ease;
}

.post-stats span:hover {
    color: var(--primary-color);
}

.trending-topics {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.trending-topics h3 {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-lg);
}

.topic-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.topic-tag {
    color: var(--primary-color);
    font-weight: 500;
}

.topic-count {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

/* Tools */
.tools {
    padding: var(--spacing-3xl) 0;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.tool-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
    font-size: var(--font-size-xl);
}

.tool-card h3 {
    margin-bottom: var(--spacing-md);
}

.tool-card p {
    margin-bottom: var(--spacing-lg);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    font-size: var(--font-size-xl);
    color: var(--primary-light);
}

.footer-logo .logo-image {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 50%;
    filter: brightness(0) saturate(100%) invert(100%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(100%) contrast(100%);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(1deg); }
    66% { transform: translateY(5px) rotate(-1deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .blog-card.featured {
        grid-column: span 1;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        padding-top: 70px; /* 移动端导航栏较小 */
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem); /* 响应式字体，移动端优化 */
    }
    
    .hero-subtitle {
        font-size: clamp(0.875rem, 4vw, 1.125rem);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
        margin-top: var(--spacing-sm);
        margin-bottom: var(--spacing-4xl);
    }
    
    .hero-stats-title {
        font-size: var(--font-size-xl);
        margin: var(--spacing-2xl) 0 var(--spacing-sm) 0;
    }
    
    .stat {
        min-width: 80px;
        padding: var(--spacing-sm);
    }
    
    .stat strong {
        font-size: var(--font-size-2xl);
    }
    
    /* Mobile FAQ styles */
    .faq {
        padding: var(--spacing-4xl) 0;
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .section-header p {
        font-size: var(--font-size-base);
    }
    
    .faq-question {
        padding: var(--spacing-lg);
    }
    
    .faq-question h3 {
        font-size: var(--font-size-base);
        margin-right: var(--spacing-md);
    }
    
    .faq-answer p {
        padding: 0 var(--spacing-lg) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    /* Mobile Blog Text Enhancements - Force Black */
    .blog-content p,
    .blog-list-excerpt {
        color: #000000 !important; /* Pure black for maximum contrast */
        font-size: var(--font-size-base) !important;
        line-height: 1.6 !important;
        font-weight: 400 !important;
    }
    
    .blog-meta {
        color: #333333 !important; /* Dark gray for meta */
        font-size: var(--font-size-sm) !important;
        font-weight: 600 !important;
    }
    
    .blog-list-meta {
        color: #333333 !important; /* Dark gray for meta */
        font-size: var(--font-size-sm) !important;
        font-weight: 600 !important;
    }
    
    .blog-content h3,
    .blog-list-title {
        color: #000000 !important; /* Pure black for headings */
        font-weight: 800 !important;
        font-size: var(--font-size-lg) !important;
        line-height: 1.4 !important;
    }
    
    .blog-category {
        font-weight: 600 !important;
        font-size: var(--font-size-xs) !important;
    }
    
    .blog-list-category {
        font-weight: 600 !important;
        font-size: var(--font-size-xs) !important;
    }
    
    .read-more,
    .blog-list-read-more {
        font-weight: 600 !important;
        font-size: var(--font-size-sm) !important;
    }
    
    /* Improve contrast for light backgrounds */
    .blog-card,
    .blog-list-item {
        background: #ffffff !important;
        box-shadow: var(--shadow-md) !important;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-card.featured {
        grid-column: span 1;
    }
    
    /* 移动端列表布局优化 */
    .blog-list-item {
        flex-direction: column;
    }
    
    .blog-list-image {
        width: 100%;
        height: 180px;
    }
    
    .blog-list-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .blog-list-category {
        align-self: flex-start;
    }
    
    .blog-view-toggle {
        gap: var(--spacing-xs);
    }
    
    .view-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.75rem;
    }
    
    .destinations-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        text-align: center;
    }
    
    .about-features {
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }
    
    .blog-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    /* Enhanced mobile blog text visibility - Pure Black */
    .blog-content p,
    .blog-list-excerpt {
        color: #000000 !important; /* Pure black for maximum readability */
        font-size: 1rem !important;
        font-weight: 500 !important;
        line-height: 1.7 !important;
    }
    
    .blog-content h3,
    .blog-list-title {
        color: #000000 !important; /* Pure black for headings */
        font-weight: 900 !important;
        font-size: 1.25rem !important;
        line-height: 1.3 !important;
        margin-bottom: 0.75rem !important;
    }
    
    .blog-meta,
    .blog-list-meta {
        color: #333333 !important; /* Dark gray for meta text */
        font-weight: 700 !important;
        font-size: 0.875rem !important;
    }
    
    .blog-category,
    .blog-list-category {
        background: var(--primary-color) !important;
        color: white !important;
        font-weight: 700 !important;
        padding: 0.25rem 0.75rem !important;
        border-radius: 9999px !important;
        font-size: 0.75rem !important;
    }
    
    /* Increase contrast for cards */
    .blog-card,
    .blog-list-item {
        background: #ffffff !important;
        border: 1px solid #e5e7eb !important;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
    }
    
    /* Better spacing for mobile reading */
    .blog-content {
        padding: 1.5rem !important;
    }
    
    .blog-list-content {
        padding: 1.25rem !important;
    }
    
    .destination-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .stat {
        justify-content: center;
    }
    
    .about-features {
        gap: var(--spacing-lg);
    }
}

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

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #0f172a;
        --surface-color: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #64748b;
        --border-color: #334155;
    }
}

/* Print styles */
@media print {
    .navbar, .footer, .hero-actions, .btn-primary, .btn-outline {
        display: none;
    }
    
    .hero {
        min-height: auto;
        background: white;
        color: black;
    }
    
    .hero-title, .hero-subtitle {
        color: black;
    }
}

/* 博客页面样式 */
/* 面包屑导航 */
.breadcrumb {
    padding: calc(var(--spacing-3xl) + 70px) 0 var(--spacing-lg);
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.breadcrumb-nav a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.breadcrumb-nav i {
    font-size: 0.75rem;
}

/* 博客页面头部 */
.blog-header {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.blog-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: white;
}

.blog-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 博客内容区域 */
.blog-content {
    padding: var(--spacing-3xl) 0;
    min-height: 60vh;
}

/* 搜索和筛选工具栏 */
.blog-toolbar {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.blog-search {
    position: relative;
}

.search-box {
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.blog-filters {
    display: flex;
    gap: var(--spacing-md);
}

.filter-select {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-sm);
    background: white;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.blog-view-toggle {
    justify-self: end;
}

.blog-view-toggle .view-btn {
    padding: var(--spacing-sm);
    min-width: auto;
}

.view-text {
    display: none;
}

/* 文章统计 */
.blog-stats {
    margin-bottom: var(--spacing-xl);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.blog-stats strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 博客页面的列表和网格布局优化 */
.blog-content .blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.blog-content .blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    color: var(--border-color);
}

.empty-state h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* 加载状态 */
.loading-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.loading-spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    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);
    }
}

/* 响应式设计 - 博客页面 */
@media (max-width: 1024px) {
    .blog-toolbar {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .blog-filters {
        justify-content: space-between;
    }
    
    .blog-view-toggle {
        justify-self: center;
    }
    
    .blog-content .blog-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .blog-title {
        font-size: var(--font-size-3xl);
    }
    
    .blog-subtitle {
        font-size: var(--font-size-base);
    }
    
    .blog-toolbar {
        padding: var(--spacing-md);
    }
    
    .blog-filters {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .view-text {
        display: inline;
        margin-left: var(--spacing-xs);
    }
    
    .blog-content .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .breadcrumb-nav {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .blog-header {
        padding: var(--spacing-2xl) 0;
    }
    
    .blog-content {
        padding: var(--spacing-2xl) 0;
    }
    
    .blog-toolbar {
        margin-bottom: var(--spacing-lg);
    }
}