/* M4A 轉 MP3 */
.m4m-note { background: #fff8e6; border-left: 4px solid #d9a400; padding: 10px 14px; border-radius: 6px; font-size: 1rem; }
.m4m-item { grid-template-columns: 1fr; }
.m4m-item .it-progress { margin: 4px 0 0; }