/* 音频同步高亮样式 */
.highlight-text {
    background-color: rgba(255, 222, 89, 0.3);
    border-radius: 4px;
    padding: 2px 4px;
    transition: background-color 0.3s ease;
    color: #bb0e0e;
}

/* 音频控制器样式 */
.audio-controls {
    transition: opacity 0.3s ease;
}

.audio-controls button {
    transition: transform 0.2s ease;
}

.audio-controls button:hover {
    transform: scale(1.1);
}

/* 移动端适配 */
@media (max-width: 640px) {
    .audio-controls {
        bottom: 70px;
    }
}