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var(--border-medium);overflow-y:auto}}.cbt-palette-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:.5rem}.cbt-palette-btn{height:38px;border-radius:var(--radius-md);border:1px solid var(--border-medium);background:var(--bg-body);color:var(--text-main);font-size:.85rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;position:relative;transition:all var(--transition-fast)}.cbt-palette-btn:hover{border-color:var(--color-brand-teal)}.cbt-palette-btn.current{box-shadow:0 0 0 2px 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var(--border-medium);border-radius:var(--radius-lg);padding:1.25rem}.cbt-review-card.correct{border-left:4px solid #10b981}.cbt-review-card.incorrect{border-left:4px solid #ef4444}.cbt-review-card.skipped{border-left:4px solid #f59e0b}.cbt-explanation-box{margin-top:.85rem;padding:.85rem 1rem;background:var(--bg-muted);border-radius:var(--radius-md);font-size:.84rem;line-height:1.55;color:var(--text-muted)}