* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
            user-select: none;
        }

        body {
            background: #000;
            min-height: 100vh;
            overflow: hidden;
            font-family: Arial, sans-serif;
            touch-action: manipulation;
        }

        .game-container {
            position: relative;
            width: 100%;
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        /* 声音波纹背景 */
        .sound-ripple {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 0;
            height: 0;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.3);
            animation: ripple 1s ease-out forwards;
            pointer-events: none;
        }

        @keyframes ripple {
            to {
                width: 300px;
                height: 300px;
                opacity: 0;
            }
        }

        /* 按钮容器 */
        .buttons-container {
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            z-index: 10;
        }

        /* 录音按钮 */
        .btn-record {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: #fff;
            border: none;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            outline: none;
            box-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
        }

        .btn-record:hover {
            transform: scale(1.1);
            box-shadow: 0 0 50px rgba(255, 255, 255, 0.5);
        }

        .btn-record:active {
            transform: scale(0.95);
        }

        .btn-record.recording {
            background: #ff3333;
            animation: pulse 1s infinite;
            box-shadow: 0 0 50px rgba(255, 0, 0, 0.5);
        }

        .btn-record.completed {
            background: #33ff33;
            box-shadow: 0 0 50px rgba(0, 255, 0, 0.5);
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        /* 录音按钮内部图标 */
        .btn-record::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 40px;
            height: 40px;
            background: #000;
            border-radius: 50%;
            transition: background 0.3s;
        }

        .btn-record.recording::after {
            width: 30px;
            height: 30px;
            border-radius: 5px;
        }

        .btn-record.completed::after {
            background: #000;
            width: 20px;
            height: 20px;
            border-radius: 0 0 0 0;
            border-left: 3px solid #000;
            border-bottom: 3px solid #000;
            transform: translate(-50%, -60%) rotate(-45deg);
        }

        /* 播放按钮 */
        .btn-play {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: #0066ff;
            border: none;
            cursor: pointer;
            transition: all 0.2s;
            margin-top: 20px;
            outline: none;
            opacity: 0.5;
            box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
        }

        .btn-play:hover:not(:disabled) {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 102, 255, 0.5);
        }

        .btn-play:active:not(:disabled) {
            transform: scale(0.95);
        }

        .btn-play:disabled {
            background: #333;
            cursor: not-allowed;
            box-shadow: none;
        }

        .btn-play.enabled {
            opacity: 1;
        }

        /* 播放按钮三角形 */
        .btn-play::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 55%;
            transform: translate(-50%, -50%);
            width: 0;
            height: 0;
            border-top: 12px solid transparent;
            border-bottom: 12px solid transparent;
            border-left: 20px solid #fff;
        }

        /* 求助按钮 */
        .btn-help {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffcc00;
            border: none;
            cursor: pointer;
            transition: all 0.2s;
            position: absolute;
            right: -80px;
            bottom: 0;
            outline: none;
            box-shadow: 0 0 15px rgba(255, 204, 0, 0.3);
        }

        .btn-help:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(255, 204, 0, 0.5);
        }

        .btn-help:active {
            transform: scale(0.95);
        }

        /* 问号图标 */
        .btn-help::after {
            content: '?';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: #000;
            font-size: 24px;
            font-weight: bold;
        }

        /* 进度指示器 */
        .progress-container {
            position: fixed;
            top: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 15px;
            z-index: 100;
        }

        .fragment {
            width: 25px;
            height: 25px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .fragment.collected {
            background: #00ff00;
            border-color: #00ff00;
            box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
            transform: scale(1.2);
        }

        .fragment.collecting {
            animation: collect 0.5s ease-out;
        }

        @keyframes collect {
            0% { transform: scale(1); }
            50% { transform: scale(1.5); }
            100% { transform: scale(1.2); }
        }

        /* 关卡指示器 */
        .level-indicator {
            position: fixed;
            top: 70px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            z-index: 100;
        }

        /* 声音分析可视化 */
        .sound-visualizer {
            position: fixed;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 3px;
            align-items: flex-end;
            height: 60px;
            z-index: 100;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .sound-visualizer.active {
            opacity: 1;
        }

        .visualizer-bar {
            width: 4px;
            background: linear-gradient(to top, #00ff00, #ff0000);
            border-radius: 2px;
            transition: height 0.05s;
        }

        /* 状态提示 */
        .status-hint {
            position: fixed;
            bottom: 180px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
            z-index: 100;
            opacity: 0;
            transition: opacity 0.3s;
            text-align: center;
        }

        .status-hint.visible {
            opacity: 1;
        }

        /* 调试面板 */
        .debug-panel {
            position: fixed;
            bottom: 10px;
            left: 10px;
            background: rgba(0, 0, 0, 0.9);
            color: #0f0;
            padding: 15px;
            font-size: 11px;
            font-family: 'Courier New', monospace;
            display: none;
            z-index: 1000;
            border: 1px solid #0f0;
            border-radius: 5px;
        }

        .debug-panel.visible {
            display: block;
        }

        .debug-panel div {
            margin-bottom: 5px;
        }

        .debug-panel .label {
            color: #888;
        }

        /* 游戏引导 */
        .guide-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.95);
            z-index: 2000;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.5s;
        }

        .guide-overlay.visible {
            opacity: 1;
            pointer-events: all;
        }

        .guide-circle {
            width: 150px;
            height: 150px;
            border: 3px solid rgba(255, 255, 255, 0.8);
            border-radius: 50%;
            animation: guidePulse 2s infinite;
            position: relative;
        }

        .guide-circle::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 50px;
            height: 50px;
            background: #fff;
            border-radius: 50%;
        }

        @keyframes guidePulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.1); opacity: 0.8; }
        }

        .guide-text {
            color: rgba(255, 255, 255, 0.8);
            margin-top: 30px;
            font-size: 18px;
        }

        /* 通关提示 */
        .victory-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 1500;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.5s;
        }

        .victory-overlay.visible {
            opacity: 1;
            pointer-events: all;
        }

        .victory-title {
            color: #00ff00;
            font-size: 48px;
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(0, 255, 0, 0.5);
        }

        .victory-subtitle {
            color: rgba(255, 255, 255, 0.8);
            font-size: 18px;
        }

        /* 移动端适配 */
        @media (max-width: 600px) {
            .btn-record {
                width: 100px;
                height: 100px;
            }

            .btn-record::after {
                width: 35px;
                height: 35px;
            }

            .btn-play {
                width: 50px;
                height: 50px;
                margin-top: 15px;
            }

            .btn-help {
                width: 40px;
                height: 40px;
                right: -60px;
            }

            .btn-help::after {
                font-size: 20px;
            }
        }