.math-add-grid{font-family:SF Mono,Fira Code,Consolas,monospace;font-size:15px;display:flex;flex-direction:column;gap:4px;max-width:100%;overflow-x:auto}.math-add-row{display:flex;align-items:center;gap:2px}.math-add-label{width:28px;text-align:center;font-weight:700;color:var(--math-text-soft);flex-shrink:0}.math-add-cell{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;font-weight:600;background:var(--math-surface-alt);border:1px solid var(--math-border-light);color:var(--math-text)}.math-add-carry{font-size:11px;width:32px;height:22px;color:var(--math-text-muted);background:transparent;border:1px dashed var(--math-border)}.math-add-carry.active{color:var(--math-warning);border-color:var(--math-warning);background:#f59e0b14;font-weight:700}.math-add-divider{height:2px;background:var(--math-primary);margin:2px 0 2px 30px;border-radius:1px}.math-add-result{background:var(--math-primary-soft);border-color:var(--math-primary);color:var(--math-primary);font-weight:700}.math-add-carry-row{opacity:.7}