.drv-fn-row{flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:14px;display:flex}.drv-fn-label{color:var(--text-dim);white-space:nowrap;margin-right:4px;font-size:.85rem}.drv-fn-btn{border:1px solid var(--border);background:var(--bg-card);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 14px;line-height:1.4;transition:border-color .12s,background .12s,color .12s}.drv-fn-btn:hover{border-color:var(--accent)}.drv-fn-btn.active{border-color:var(--accent);background:var(--accent);color:#fff}.drv-fn-btn.active .katex,.drv-fn-btn.active .katex-html,.drv-fn-btn.active .katex *{color:inherit!important}.drv-x-row{align-items:center;gap:10px;margin-bottom:14px;display:flex}.drv-x-label{color:var(--text-dim);white-space:nowrap;min-width:28px;font-size:.9rem}.drv-slider{flex:1;min-width:0}.drv-num{border:1px solid var(--border);background:var(--bg-card);width:76px;color:var(--text);text-align:right;border-radius:4px;padding:4px 8px;font-size:.9rem}.drv-num:focus{border-color:var(--accent);outline:none}.drv-canvas-wrap canvas{cursor:crosshair;display:block}.drv-canvas-shell{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:10px;position:relative}.drv-canvas-actions{z-index:2;position:absolute;top:10px;right:10px}.drv-fs-btn{background:color-mix(in srgb, var(--bg-surface) 82%, transparent);width:1.7rem;height:1.7rem;color:var(--text);cursor:pointer;border:0;border-radius:.4rem;line-height:1}.drv-fs-btn:hover{color:var(--accent);background:color-mix(in srgb, var(--accent) 16%, transparent)}#drv-canvas-shell:fullscreen{background:var(--bg);place-items:center;width:100vw;height:100vh;padding:.75rem;display:grid}.drv-result-box{margin-top:12px}.drv-result-math{overflow-x:auto}