:root{--primary: #4f46e5;--primary-dark: #3730a3;--primary-light: #eef2ff;--bg-body: #f3f4f6;--bg-card: rgba(255, 255, 255, .95);--border: #e2e8f0;--color-data: #1e293b;--color-macro: #b45309;--color-internal: #dc2626;--color-diag: #059669;--color-student: #2563eb;--color-tools: #7c3aed;--secondary: #475569;--success: #16a34a;--danger: #dc2626;--warning: #f59e0b;--shadow: 0 4px 6px -1px rgb(0 0 0 / .05), 0 2px 4px -2px rgb(0 0 0 / .05);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 12px;--transition-fast: .15s;--transition-normal: .3s}body{background-color:var(--bg-body);background-image:radial-gradient(#e5e7eb 1px,transparent 1px);background-size:20px 20px;color:#1e293b;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;padding-bottom:60px;font-size:14px;scroll-behavior:smooth;line-height:1.5}.dark-mode{--bg-body: #0f172a;--bg-card: rgba(30, 41, 59, .85);--border: rgba(255, 255, 255, .1);--shadow: 0 4px 6px -1px 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