:root{--color-bg:#0a0e17;--color-bg-elevated:#111827;--color-bg-card:#151d2e;--color-border:#3b82f61f;--color-border-hover:#3b82f659;--color-text:#e2e8f0;--color-text-muted:#94a3b8;--color-text-subtle:#64748b;--color-accent:#3b82f6;--color-accent-light:#60a5fa;--color-accent-glow:#3b82f640;--color-skill-known:#8fbc9a;--color-skill-known-bg:#8fbc9a1a;--color-skill-known-border:#8fbc9a38;--color-skill-learning:#d4a574;--color-skill-learning-bg:#d4a5741a;--color-skill-learning-border:#d4a57438;--font-sans:"Inter", system-ui, -apple-system, sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-full:9999px;--shadow-card:0 4px 24px #0000004d;--shadow-glow:0 0 40px var(--color-accent-glow);--transition:.3s cubic-bezier(.4, 0, .2, 1);--transition-slow:.6s cubic-bezier(.4, 0, .2, 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