tColor" d="M3,4H21V8H3V4M3,10H21V14H3V10M3,16H21V20H3V16Z"/>
                            </svg>
                        </button>
                        <button class="view-mode-button active" data-mode="group" title="分组视图">
                            <svg viewBox="0 0 24 24" width="16" height="16">
                                <path fill="currentColor" d="M3,3H11V11H3V3M3,13H11V21H3V13M13,3H21V11H13V3M13,13H21V21H13V13Z"/>
                            </svg>
                        </button>
  