.prop-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.prop-mode{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.prop-mode label{display:flex;align-items:center;gap:4px;cursor:pointer;font-size:0.85rem;color:var(--text-secondary)}.result-box{padding:16px;background:var(--surface);border:2px solid var(--accent);border-radius:var(--radius);font-size:1.2rem;font-weight:700;text-align:center;color:var(--accent);margin-top:16px}