.sig-canvas{width:100%;max-width:440px;height:150px;border:1.5px dashed var(--border-strong);border-radius:12px;background:var(--bg-page);touch-action:none;cursor:crosshair;display:block}.sig-actions{display:flex;gap:10px;margin-top:10px}.sig-preview{display:inline-block;padding:10px 16px;border:1px solid var(--border);border-radius:12px;background:#fff}.sig-preview img{height:72px;max-width:260px;object-fit:contain;display:block}.sig-empty{font-size:13px;color:var(--text-muted);font-style:italic}