/* 新增导航样式 */
        .nav-tab {
            position: fixed;
            left: 20px;
            top: 20px;
            z-index: 1000;
        }

        .home-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 15px;
            background: #0071e3;
            color: white;
            border-radius: 25px;
            text-decoration: none;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            transition: transform 0.2s;
        }

        .home-link:hover {
            transform: translateY(-2px);
        }

        .home-link svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }
        :root {
            --bg-color: #f5f5f7;
            --text-color: #1d1d1f;
            --primary-color: #86868b;
        }

        body {
            font-family: -apple-system, system-ui;
            background: var(--bg-color);
            color: var(--text-color);
            margin: 0;
            padding: 15px;
            padding-top: 80px;
        }

        .instructions {
            max-width: 600px;
            background-color: rgba(0,0,0,0.02);
            padding: 15px;
            border-radius: 5px;
            margin: 0 auto 20px; /* 关键修改：水平居中 */
            border-left: 4px solid #e8f4f8; /* 添加视觉引导线 */
            box-shadow: 0 2px 8px rgba(0,113,227,0.1); /* 柔和阴影 */
        }

        .container {
            max-width: 600px;
            margin: 0 auto;
            padding: 0 20px 15px; 
        }

        .status-bar {
            padding: 12px;
            background: rgba(0,0,0,0.05);
            border-radius: 8px;
            margin: 15px 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 10px;
        }

        .status-item {
            display: flex;
            flex-direction: column;
        }

        .status-label {
            font-size: 0.9em;
            color: #86868b;
        }

        .status-value {
            font-weight: 500;
            margin-top: 4px;
        }

        #searchBox {
            width: 100%;
            padding: 12px;
            margin: 10px 0;
            border: 1px solid #d2d2d7;
            border-radius: 8px;
            font-size: 16px;
        }

        .mode-control {
            display: flex;
            gap: 15px;
            margin: 15px 0;
        }

        button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 20px;
            cursor: pointer;
            transition: opacity 0.3s;
        }

        button.active {
            background: #0071e3;
        }

        .audio-list {
            margin-top: 20px;
            max-height: 60vh;
            overflow-y: auto;
        }

        .audio-item {
            padding: 12px;
            border-bottom: 1px solid #e2e2e9;
            cursor: pointer;
            transition: background 0.2s;
        }

        .audio-item:hover {
            background: rgba(0,0,0,0.05);
        }

        .control-group {
            display: flex;
            gap: 15px;
            margin: 15px 0;
            flex-wrap: wrap;
        }

        .input-group {
            display: none;
        }

        input[type="number"] {
            padding: 8px;
            width: 120px;
            border: 1px solid #d2d2d7;
            border-radius: 6px;
        }

        label {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        audio {
            width: 100%;
            margin: 15px 0;
        }

        @media (max-width: 480px) {
            .nav-tab {
                left: 10px;
                top: 10px;
            }
            .home-link {
                padding: 6px 12px;
                font-size: 14px;
            }
            body {
                padding: 10px;
                padding-top: 60px; 
            }
            button {
                padding: 8px 16px;
            }
            .control-group {
                flex-direction: column;
            }
        }
 /* 新增单曲循环模式专属样式 */
        .mode-indicator {
            padding: 8px 12px;
            background: #e3f2fd;
            border-radius: 4px;
            margin: 10px 0;
            display: inline-block;
        }
        
        /* 页脚样式 */
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            color: #808080;
            opacity: 0.8;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .beian-info {
            text-align: center;
            margin: 10px 0;
            font-size: 14px;
        }

        .beian-info img {
            vertical-align: middle;
        }

        .beian-info a {
            color: #333;
            text-decoration: none;
        }

        .beian-info a:hover {
            text-decoration: underline;
        }