.container {
            max-width: 800px;
            margin: 0 auto;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            padding: 30px;
        }
        
        header {
            text-align: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
        }
        
        h1 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 28px;
        }
        
        .description {
            color: #7f8c8d;
            font-size: 16px;
        }
        
        .input-section {
            margin-bottom: 30px;
        }
        
        .input-group {
            display: flex;
            margin-bottom: 15px;
        }
        
        input[type="text"] {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 6px 0 0 6px;
            font-size: 16px;
            transition: border-color 0.3s;
        }
        
        input[type="text"]:focus {
            border-color: #3498db;
            outline: none;
        }
        
        button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s;
        }
        
        button:hover {
            background-color: #2980b9;
        }
        
        button:disabled {
            background-color: #bdc3c7;
            cursor: not-allowed;
        }
        
        .example {
            color: #7f8c8d;
            font-size: 14px;
        }
        
        .example a {
            color: #3498db;
            text-decoration: none;
            cursor: pointer;
        }
        
        .example a:hover {
            text-decoration: underline;
        }
        
        .result-section {
            display: none;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #eee;
        }
        
        .song-card {
            display: flex;
            gap: 20px;
            margin-bottom: 20px;
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
        }
        
        .song-cover {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            object-fit: cover;
        }
        
        .song-details {
            flex: 1;
        }
        
        .song-title {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 8px;
            color: #2c3e50;
        }
        
        .song-author {
            font-size: 16px;
            color: #7f8c8d;
            margin-bottom: 15px;
        }
        
        .song-id {
            font-size: 14px;
            color: #95a5a6;
        }
        
        .audio-player {
            width: 100%;
            margin: 20px 0;
            border-radius: 8px;
        }
        
        .download-section {
            display: flex;
            gap: 15px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        
        .download-btn {
            display: inline-flex;
            align-items: center;
            background-color: #2ecc71;
            color: white;
            padding: 10px 20px;
            border-radius: 6px;
            text-decoration: none;
            font-size: 16px;
            transition: background-color 0.3s;
        }
        
        .download-btn:hover {
            background-color: #27ae60;
        }
        
        .download-btn::before {
            margin-right: 8px;
        }
        
        .loading {
            display: none;
            text-align: center;
            margin: 20px 0;
        }
        
        .spinner {
            border: 4px solid rgba(0, 0, 0, 0.1);
            border-left-color: #3498db;
            border-radius: 50%;
            width: 30px;
            height: 30px;
            animation: spin 1s linear infinite;
            margin: 0 auto 10px;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .error {
            display: none;
            background-color: #ffeaa7;
            color: #d63031;
            padding: 15px;
            border-radius: 6px;
            margin-top: 20px;
            border-left: 4px solid #e74c3c;
        }
        
        .tips {
            background-color: #e8f4fd;
            padding: 15px;
            border-radius: 8px;
            margin-top: 20px;
            font-size: 14px;
            color: #2c3e50;
        }
        
        footer {
            text-align: center;
            margin-top: 40px;
            color: #95a5a6;
            font-size: 14px;
        }
        
        @media (max-width: 600px) {
            .container {
                padding: 20px;
            }
            
            .input-group {
                flex-direction: column;
            }
            
            input[type="text"] {
                border-radius: 6px;
                margin-bottom: 10px;
            }
            
            button {
                border-radius: 6px;
                width: 100%;
            }
            
            .song-card {
                flex-direction: column;
                text-align: center;
            }
            
            .song-cover {
                align-self: center;
            }
            
            .download-section {
                flex-direction: column;
            }
        }