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code{background:var(--bg-tertiary);color:var(--accent-primary);padding:var(--space-1)var(--space-2);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:.875rem}.exercise-box{background:var(--bg-primary);padding:var(--space-6);border-radius:var(--radius-lg);border:2px solid var(--accent-secondary);margin:var(--space-8)0}.exercise-box h4{display:flex;align-items:center;gap:var(--space-2);font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-4)}.exercise-box h4 i{color:var(--accent-secondary)}.exercise-box p{color:var(--text-secondary);line-height:1.6;margin-bottom:var(--space-4)}.exercise-box ul{margin:var(--space-4)0;padding-left:var(--space-6)}.exercise-box li{color:var(--text-secondary);margin-bottom:var(--space-2)}.quiz-question{margin-bottom:var(--space-6)}.quiz-question h5{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-3)}.quiz-options{display:grid;gap:var(--space-2)}.quiz-options 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