.result-box{background:#f0f7ff;border-left:4px solid #667eea;padding:15px;margin:15px 0;border-radius:4px}.result-highlight{font-size:1.8em;color:#667eea;font-weight:700;margin:10px 0}.substitution-result{background:#fff4e6;border-left:4px solid #ff9800;padding:15px;margin:10px 0;border-radius:4px}