:root{--background: #f8fafc;--card-background: #ffffff;--text-primary: #1a202c;--text-secondary: #4a5568;--border-color: #e2e8f0;--card-shadow: 0 4px 6px rgba(0, 0, 0, .1);--primary-color: #3b82f6;--primary-hover: #2563eb;--success-color: #10b981;--warning-color: #f59e0b;--error-color: #ef4444;--theme-switcher-bg: #ffffff;--theme-switcher-border: #e2e8f0;--theme-switcher-color: #4a5568;--theme-switcher-hover-bg: #f7fafc;--theme-switcher-hover-border: #cbd5e0}[data-theme=dark]{--background: #1a202c;--card-background: #2d3748;--text-primary: #f7fafc;--text-secondary: #e2e8f0;--border-color: #4a5568;--card-shadow: 0 4px 6px rgba(0, 0, 0, .3);--primary-color: #60a5fa;--primary-hover: #3b82f6;--success-color: #34d399;--warning-color: #fbbf24;--error-color: #f87171;--theme-switcher-bg: #2d3748;--theme-switcher-border: #4a5568;--theme-switcher-color: #e2e8f0;--theme-switcher-hover-bg: #4a5568;--theme-switcher-hover-border: 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#00000026}.category-icon{font-size:3rem;margin-bottom:20px}.category-card h3{font-size:1.4rem;font-weight:600;margin-bottom:12px;color:var(--text-primary)}.category-card p{color:var(--text-secondary);line-height:1.5}.info-section{margin-bottom:60px}.info-section h2{font-size:2.5rem;font-weight:600;margin-bottom:40px;color:var(--text-primary);text-align:center}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}.info-card{background:var(--card-background);padding:40px;border-radius:16px;box-shadow:var(--card-shadow);text-align:center;border:1px solid var(--border-color);transition:transform .3s ease}.info-card:hover{transform:translateY(-4px)}.info-icon{font-size:3.5rem;margin-bottom:24px}.info-card h3{font-size:1.4rem;font-weight:600;margin-bottom:16px;color:var(--text-primary)}.info-card p{color:var(--text-secondary);line-height:1.6}.stats-section{background:var(--card-background);border-radius:16px;padding:60px 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