Enzyme/milkLab.html at main · treehey/Enzyme · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>酶的神奇冒险</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', Arial, sans-serif;
        }
        body {
            background-color: #f0f8ff;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            position: relative;
        }
        header {
            background-color: #4285f4;
            color: white;
            padding: 20px 0;
            text-align: center;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.5em;
            margin-bottom: 10px;
        }
        h2 {
            color: #4285f4;
            margin: 20px 0;
        }
        .intro {
            background-color: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        .tabs {
            display: flex;
            margin-bottom: 20px;
        }
        .tab {
            padding: 10px 20px;
            background-color: #e0e0e0;
            margin-right: 5px;
            border-radius: 5px 5px 0 0;
            cursor: pointer;
            transition: all 0.3s;
        }
        .tab.active {
            background-color: #4285f4;
            color: white;
        }
        .tab-content {
            display: none;
            background-color: white;
            padding: 20px;
            border-radius: 0 10px 10px 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            min-height: 400px;
        }
        .tab-content.active {
            display: block;
        }

        /* 干酪制作游戏 */
        .cheese-game {
            position: relative;
            width: 100%;
            height: 500px;
            background-color: #f9f5e3;
            border-radius: 10px;
            overflow: hidden;
        }
        .milk-container {
            position: absolute;
            width: 200px;
            height: 300px;
            background-color: #fff;
            border: 3px solid #ccc;
            border-radius: 0 0 20px 20px;
            bottom: 50px;
            left: 50%;
            transform: translateX(-50%);
        }
        .milk {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 90%;
            background-color: #fffafa;
            border-radius: 0 0 17px 17px;
            transition: all 3s;
        }
        .enzyme-selector {
            position: absolute;
            top: 50px;
            left: 50px;
            display: flex;
            flex-direction: column;
            z-index: 3;
        }
        .enzyme-btn {
            margin: 5px 0;
            padding: 10px;
            background-color: #4285f4;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .enzyme-btn:hover {
            background-color: #3367d6;
            transform: scale(1.05);
        }
        .milk-status {
            position: absolute;
            top: 50px;
            right: 50px;
            background-color: white;
            padding: 10px;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            z-index: 3;
        }
        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }
        .particle {
            position: absolute;
            width: 10px;
            height: 10px;
            background-color: yellow;
            border-radius: 50%;
            animation: float 5s infinite ease-in-out;
        }

        /* 乳糖酶游戏 */
        .lactose-game {
            position: relative;
            width: 100%;
            height: 500px;
            background-color: #e6f7ff;
            border-radius: 10px;
            overflow: hidden;
        }
        .intestine {
            position: relative;
            width: 80%;
            height: 200px;
            margin: 50px auto;
            background-color: #ffcccb;
            border-radius: 50px;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
        }
        .lactose {
            position: absolute;
            width: 60px;
            height: 60px;
            background-color: white;
            border: 2px solid #333;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-weight: bold;
            user-select: none;
            cursor: pointer;
            z-index: 10;
        }
        .lactase {
            position: absolute;
            width: 40px;
            height: 40px;
            background-color: #4285f4;
            color: white;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-weight: bold;
            cursor: pointer;
            z-index: 20;
        }
        .glucose, .galactose {
            position: absolute;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 10px;
            font-weight: bold;
            opacity: 0;
            transition: all 1s;
        }
        .glucose {
            background-color: #ffeb3b;
        }
        .galactose {
            background-color: #ff9800;
        }

        .stats {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: white;
            padding: 10px;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .quiz-btn {
            display: block;
            margin: 20px auto;
            padding: 10px 20px;
            background-color: #4285f4;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .quiz-btn:hover {
            background-color: #3367d6;
            transform: scale(1.05);
        }

        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            z-index: 100;
            justify-content: center;
            align-items: center;
        }
        .modal-content {
            background-color: white;
            padding: 20px;
            border-radius: 10px;
            max-width: 600px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
        }
        .close {
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 24px;
            cursor: pointer;
        }

        /* 动画效果 */
        @keyframes float {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-20px);
            }
        }

        .progress-bar {
            width: 100%;
            height: 20px;
            background-color: #e0e0e0;
            border-radius: 10px;
            margin: 10px 0;
            overflow: hidden;
        }
        .progress {
            height: 100%;
            background-color: #4285f4;
            width: 0%;
            transition: width 0.5s;
        }

        .info-box {
            background-color: #f5f5f5;
            padding: 15px;
            border-radius: 8px;
            margin: 10px 0;
            border-left: 4px solid #4285f4;
        }

        .feedback {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            padding: 10px 20px;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            border-radius: 20px;
            opacity: 0;
            transition: opacity 0.5s;
        }

        .microscope-view {
            position: absolute;
            width: 150px;
            height: 150px;
            background-color: rgba(255, 255, 255, 0.9);
            border: 3px solid #333;
            border-radius: 50%;
            overflow: hidden;
            display: none;
            z-index: 0;
        }
    </style>
</head>
<body>
    <header>
        <h1>酶的神奇冒险</h1>
        <p>跟随酶的脚步，探索乳制品加工的奇妙世界！</p>
    </header>

    <div class="container">
        <div class="intro">
            <h2>欢迎来到酶的世界！</h2>
            <p>酶是生物体内的催化剂，能够加速化学反应而不被消耗。在这个互动游戏中，你将探索两种重要的酶在食品工业中的应用：</p>
            <ul>
                <li>凝乳酶：如何将牛奶变成美味的奶酪</li>
                <li>乳糖酶：如何制作低乳糖牛奶，帮助乳糖不耐受的人群</li>
            </ul>
            <p>通过有趣的互动实验，你将亲眼见证酶的神奇力量！</p>
        </div>

        <div class="tabs">
            <div class="tab active" data-tab="cheese">干酪制作实验室</div>
            <div class="tab" data-tab="milk">低乳糖牛奶工厂</div>
        </div>

        <div class="tab-content active" id="cheese-tab">
            <h2>干酪制作实验室</h2>
            <p>在这个实验中，你将学习不同类型的凝乳酶如何影响干酪的制作过程和最终品质。</p>

            <div class="cheese-game">
                <div class="milk-container">
                    <div class="milk"></div>
                </div>

                <div class="enzyme-selector">
                    <h3>选择凝乳酶类型：</h3>
                    <button class="enzyme-btn" data-enzyme="calf">小牛凝乳酶</button>
                    <button class="enzyme-btn" data-enzyme="lamb">羔羊凝乳酶</button>
                    <button class="enzyme-btn" data-enzyme="papaya">木瓜凝乳酶</button>
                    <button class="enzyme-btn" data-enzyme="prinsepia">青刺果凝乳酶</button>
                    <button class="enzyme-btn" data-enzyme="mucor">毛霉凝乳酶</button>
                    <button class="enzyme-btn" data-enzyme="reset">重置实验</button>
                </div>

                <div class="milk-status">
                    <h3>牛奶状态</h3>
                    <p>凝固程度: <span id="coagulation">0%</span></p>
                    <div class="progress-bar">
                        <div class="progress" id="coagulation-progress"></div>
                    </div>

                    <p>质构: <span id="texture">流动态</span></p>
                    <p>风味物质: <span id="flavor">无</span></p>
                    <p>时间: <span id="time">0</span>分钟</p>
                </div>

                <div class="particles" id="particles"></div>
                <div class="microscope-view" id="microscope"></div>
            </div>

            <div class="info-box">
                <h3>科学小知识</h3>
                <p id="cheese-info">凝乳酶是干酪生产中使牛奶凝固的关键酶，主要通过特异性裂解酪蛋白链中的部分多肽键，使牛奶凝结。不同类型的凝乳酶会影响干酪的质构和风味。</p>
            </div>

            <button class="quiz-btn" id="cheese-quiz-btn">挑战酶知识测验！</button>
        </div>

        <div class="tab-content" id="milk-tab">
            <h2>低乳糖牛奶工厂</h2>
            <p>在这个游戏中，你将操控乳糖酶分解乳糖，帮助乳糖不耐受的人们享用美味牛奶！</p>

            <div class="lactose-game">
                <div class="stats">
                    <h3>游戏状态</h3>
                    <p>乳糖数量: <span id="lactose-count">10</span></p>
                    <p>已分解: <span id="hydrolyzed">0</span></p>
                    <p>得分: <span id="score">0</span></p>
                    <p>时间: <span id="game-time">60</span>秒</p>
                </div>

                <div class="intestine">
                    <div id="lactase" class="lactase">酶</div>
                </div>

                <div class="info-box">
                    <h3>乳糖不耐受</h3>
                    <p>约65%的人在婴儿期后会逐渐失去消化乳糖的能力。乳糖酶可以将乳糖分解为葡萄糖和半乳糖，帮助解决这个问题。</p>
                </div>

                <button class="quiz-btn" id="start-lactose-game">开始游戏</button>
            </div>

            <button class="quiz-btn" id="lactose-quiz-btn">挑战乳糖酶知识测验！</button>
        </div>
    </div>

    <div class="modal" id="cheese-quiz-modal">
        <div class="modal-content">
            <span class="close">&times;</span>
            <h2>干酪酶知识挑战</h2>
            <div id="cheese-quiz-content">
                <p>1. 哪种凝乳酶在研究中表现出最佳的干酪质构特性？</p>
                <label><input type="radio" name="q1" value="a"> A. 小牛凝乳酶</label><br>
                <label><input type="radio" name="q1" value="b"> B. 青刺果凝乳酶</label><br>
                <label><input type="radio" name="q1" value="c"> C. 木瓜凝乳酶</label><br>

                <p>2. 凝乳酶的主要作用是什么？</p>
                <label><input type="radio" name="q2" value="a"> A. 分解乳糖</label><br>
                <label><input type="radio" name="q2" value="b"> B. 特异性裂解酪蛋白链中的部分多肽键</label><br>
                <label><input type="radio" name="q2" value="c"> C. 增加牛奶的甜度</label><br>

                <p>3. 干酪成熟过程中，哪种酶负责进一步分解酪蛋白，形成风味物质？</p>
                <label><input type="radio" name="q3" value="a"> A. 凝乳酶</label><br>
                <label><input type="radio" name="q3" value="b"> B. 蛋白酶</label><br>
                <label><input type="radio" name="q3" value="c"> C. 淀粉酶</label><br>

                <button class="quiz-btn" id="submit-cheese-quiz">提交答案</button>
            </div>
            <div id="cheese-quiz-result" style="display:none;"></div>
        </div>
    </div>

    <div class="modal" id="lactose-quiz-modal">
        <div class="modal-content">
            <span class="close">&times;</span>
            <h2>乳糖酶知识挑战</h2>
            <div id="lactose-quiz-content">
                <p>1. 乳糖酶将乳糖分解为哪两种物质？</p>
                <label><input type="radio" name="lq1" value="a"> A. 葡萄糖和果糖</label><br>
                <label><input type="radio" name="lq1" value="b"> B. 葡萄糖和半乳糖</label><br>
                <label><input type="radio" name="lq1" value="c"> C. 蔗糖和麦芽糖</label><br>

                <p>2. 乳糖酶在什么pH条件下最稳定？</p>
                <label><input type="radio" name="lq2" value="a"> A. 酸性条件</label><br>
                <label><input type="radio" name="lq2" value="b"> B. 碱性条件</label><br>
                <label><input type="radio" name="lq2" value="c"> C. 中性条件</label><br>

                <p>3. 低乳糖牛奶适合哪类人群？</p>
                <label><input type="radio" name="lq3" value="a"> A. 糖尿病患者</label><br>
                <label><input type="radio" name="lq3" value="b"> B. 乳糖不耐受人群</label><br>
                <label><input type="radio" name="lq3" value="c"> C. 高血压患者</label><br>

                <button class="quiz-btn" id="submit-lactose-quiz">提交答案</button>
            </div>
            <div id="lactose-quiz-result" style="display:none;"></div>
        </div>
    </div>

    <div class="feedback" id="feedback"></div>

    <script>
        // 切换标签页
        document.querySelectorAll('.tab').forEach(tab => {
            tab.addEventListener('click', () => {
                document.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
                document.querySelectorAll('.tab-content').forEach(c => c.classList.remove('active'));

                tab.classList.add('active');
                document.getElementById(tab.dataset.tab + '-tab').classList.add('active');
            });
        });

        // 干酪制作实验
        let cheeseTimer;
        let cheeseTime = 0;
        const coagulationProgress = document.getElementById('coagulation-progress');
        const coagulationText = document.getElementById('coagulation');
        const textureText = document.getElementById('texture');
        const flavorText = document.getElementById('flavor');
        const timeText = document.getElementById('time');
        const particles = document.getElementById('particles');
        const milk = document.querySelector('.milk');
        const cheeseInfo = document.getElementById('cheese-info');
        const microscope = document.getElementById('microscope');

        // 酶特性数据
        const enzymeData = {
            calf: {
                coagulationSpeed: 100,
                maxCoagulation: 95,
                texture: "紧密、有弹性",
                flavor: "温和、奶香浓郁",
                color: "#f5f5dc",
                info: "小牛凝乳酶是传统干酪生产中最常用的酶，能形成质地紧密、风味温和的干酪。"
            },
            lamb: {
                coagulationSpeed: 90,
                maxCoagulation: 90,
                texture: "较紧密、略脆",
                flavor: "浓郁、略带咸味",
                color: "#f5f5dc",
                info: "羔羊凝乳酶与小牛凝乳酶性质相似，但凝乳速度略慢，常用于某些特种干酪的制作。"
            },
            papaya: {
                coagulationSpeed: 70,
                maxCoagulation: 75,
                texture: "疏松、较软",
                flavor: "轻微果味、清淡",
                color: "#fffacd",
                info: "木瓜凝乳酶是一种植物来源的酶，凝乳能力较动物凝乳酶弱，但可作为素食干酪的制作选择。"
            },
            prinsepia: {
                coagulationSpeed: 110,
                maxCoagulation: 98,
                texture: "非常紧密、高弹性",
                flavor: "丰富、复杂、持久",
                color: "#eee8aa",
                info: "青刺果凝乳酶是一种来自青刺果的植物酶，研究表明它能够提供比传统凝乳酶更好的质构特性和风味。"
            },
            mucor: {
                coagulationSpeed: 80,
                maxCoagulation: 85,
                texture: "中等紧实、细腻",
                flavor: "特殊霉香、适中",
                color: "#fafad2",
                info: "毛霉凝乳酶是一种微生物来源的酶，常用于特种干酪制作，能够提供独特的风味特性。"
            }
        };

        function showFeedback(message) {
            const feedback = document.getElementById('feedback');
            feedback.textContent = message;
            feedback.style.opacity = 1;

            setTimeout(() => {
                feedback.style.opacity = 0;
            }, 2000);
        }

        function resetCheeseExperiment() {
            clearInterval(cheeseTimer);
            cheeseTime = 0;
            milk.style.backgroundColor = "#fffafa";
            milk.style.transform = "scale(1)";
            coagulationText.textContent = "0%";
            coagulationProgress.style.width = "0%";
            textureText.textContent = "流动态";
            flavorText.textContent = "无";
            timeText.textContent = "0";
            particles.innerHTML = "";
            cheeseInfo.textContent = "凝乳酶是干酪生产中使牛奶凝固的关键酶，主要通过特异性裂解酪蛋白链中的部分多肽键，使牛奶凝结。不同类型的凝乳酶会影响干酪的质构和风味。";
        }

        document.querySelectorAll('.enzyme-btn').forEach(btn => {
            btn.addEventListener('click', () => {
                const enzymeType = btn.dataset.enzyme;

                if (enzymeType === 'reset') {
                    resetCheeseExperiment();
                    return;
                }

                // 重置实验
                resetCheeseExperiment();

                // 显示反馈
                showFeedback(`已添加${btn.textContent}！`);

                // 创建酶粒子
                for (let i = 0; i < 20; i++) {
                    const particle = document.createElement('div');
                    particle.classList.add('particle');
                    particle.style.left = `${Math.random() * 100}%`;
                    particle.style.top = `${Math.random() * 100}%`;
                    particle.style.animationDelay = `${Math.random() * 2}s`;
                    particles.appendChild(particle);
                }

                // 更新信息
                cheeseInfo.textContent = enzymeData[enzymeType].info;

                // 开始实验模拟
                const enzyme = enzymeData[enzymeType];
                let coagulation = 0;

                cheeseTimer = setInterval(() => {
                    cheeseTime++;
                    timeText.textContent = cheeseTime;

                    // 计算凝固度
                    if (coagulation < enzyme.maxCoagulation) {
                        coagulation += enzyme.coagulationSpeed / 60;
                        if (coagulation > enzyme.maxCoagulation) {
                            coagulation = enzyme.maxCoagulation;
                        }
                    }

                    // 更新UI
                    coagulationText.textContent = `${Math.round(coagulation)}%`;
                    coagulationProgress.style.width = `${coagulation}%`;

                    // 更新牛奶外观
                    milk.style.backgroundColor = enzyme.color;
                    milk.style.transform = `scale(${1 - coagulation/200})`;

                    // 更新质构和风味
                    if (coagulation > 60) {
                        textureText.textContent = enzyme.texture;
                        flavorText.textContent = enzyme.flavor;
                    } else if (coagulation > 30) {
                        textureText.textContent = "半固态";
                        flavorText.textContent = "开始形成";
                    } else {
                        textureText.textContent = "流动态";
                        flavorText.textContent = "无";
                    }

                    // 30分钟后停止实验
                    if (cheeseTime >= 30) {
                        clearInterval(cheeseTimer);
                        showFeedback("实验结束！");
                    }
                }, 1000);
            });
        });

        // 显微镜效果
        document.querySelector('.cheese-game').addEventListener('mousemove', (e) => {
            const rect = document.querySelector('.cheese-game').getBoundingClientRect();
            const x = e.clientX - rect.left;
            const y = e.clientY - rect.top;

            microscope.style.left = `${x - 75}px`;
            microscope.style.top = `${y - 75}px`;

            if (coagulationProgress.style.width !== "0%") {
                microscope.style.display = 'block';

                // 随机生成酶微观效果
                microscope.innerHTML = '';
                const coagulation = parseInt(coagulationProgress.style.width);

                for (let i = 0; i < coagulation / 5; i++) {
                    const microParticle = document.createElement('div');
                    microParticle.style.position = 'absolute';
                    microParticle.style.width = '8px';
                    microParticle.style.height = '8px';
                    microParticle.style.backgroundColor = '#4285f4';
                    microParticle.style.borderRadius = '50%';
                    microParticle.style.left = `${Math.random() * 150}px`;
                    microParticle.style.top = `${Math.random() * 150}px`;
                    microscope.appendChild(microParticle);

                    const line = document.createElement('div');
                    line.style.position = 'absolute';
                    line.style.width = `${10 + Math.random() * 20}px`;
                    line.style.height = '2px';
                    line.style.backgroundColor = '#333';
                    line.style.left = `${Math.random() * 150}px`;
                    line.style.top = `${Math.random() * 150}px`;
                    line.style.transform = `rotate(${Math.random() * 360}deg)`;
                    microscope.appendChild(line);
                }
            } else {
                microscope.style.display = 'none';
            }
        });

        document.querySelector('.cheese-game').addEventListener('mouseleave', () => {
            microscope.style.display = 'none';

        });


        // 补充乳糖酶游戏的代码
document.getElementById('lactose-quiz-btn').addEventListener('click', () => {
    document.getElementById('lactose-quiz-modal').style.display = 'flex';
});

document.getElementById('cheese-quiz-btn').addEventListener('click', () => {
    document.getElementById('cheese-quiz-modal').style.display = 'flex';
});

// 关闭模态框
document.querySelectorAll('.close').forEach(close => {
    close.addEventListener('click', () => {
        document.getElementById('cheese-quiz-modal').style.display = 'none';
        document.getElementById('lactose-quiz-modal').style.display = 'none';
    });
});

// 提交乳酪测验答案
document.getElementById('submit-cheese-quiz').addEventListener('click', () => {
    const q1 = document.querySelector('input[name="q1"]:checked')?.value;
    const q2 = document.querySelector('input[name="q2"]:checked')?.value;
    const q3 = document.querySelector('input[name="q3"]:checked')?.value;

    let correct = 0;
    if (q1 === 'b') correct++;
    if (q2 === 'b') correct++;
    if (q3 === 'b') correct++;

    document.getElementById('cheese-quiz-content').style.display = 'none';
    document.getElementById('cheese-quiz-result').style.display = 'block';
    document.getElementById('cheese-quiz-result').innerHTML = `
        <h3>测验结果</h3>
        <p>你答对了${correct}道题，总分：${correct * 33}分！</p>

        <div class="info-box">
            <h4>正确答案：</h4>
            <p>1. B. 青刺果凝乳酶</p>
            <p>2. B. 特异性裂解酪蛋白链中的部分多肽键</p>
            <p>3. B. 蛋白酶</p>
        </div>

        <button class="quiz-btn" onclick="document.getElementById('cheese-quiz-modal').style.display='none';">关闭</button>
    `;
});

// 提交乳糖酶测验答案
document.getElementById('submit-lactose-quiz').addEventListener('click', () => {
    const q1 = document.querySelector('input[name="lq1"]:checked')?.value;
    const q2 = document.querySelector('input[name="lq2"]:checked')?.value;
    const q3 = document.querySelector('input[name="lq3"]:checked')?.value;

    let correct = 0;
    if (q1 === 'b') correct++;
    if (q2 === 'c') correct++;
    if (q3 === 'b') correct++;

    document.getElementById('lactose-quiz-content').style.display = 'none';
    document.getElementById('lactose-quiz-result').style.display = 'block';
    document.getElementById('lactose-quiz-result').innerHTML = `
        <h3>测验结果</h3>
        <p>你答对了${correct}道题，总分：${correct * 33}分！</p>

        <div class="info-box">
            <h4>正确答案：</h4>
            <p>1. B. 葡萄糖和半乳糖</p>
            <p>2. C. 中性条件</p>
            <p>3. B. 乳糖不耐受人群</p>
        </div>

        <button class="quiz-btn" onclick="document.getElementById('lactose-quiz-modal').style.display='none';">关闭</button>
    `;
});

// 乳糖酶游戏
let lactoseGameTimer;
        let lactoseGameTime = 60;
        let score = 0;
        let hydrolyzedCount = 0;
        let lactoseCount = 10;
        let lactoses = [];
        let gameRunning = false;

        const lactase = document.getElementById('lactase');
        const intestine = document.querySelector('.intestine');
        const lactoseCountEl = document.getElementById('lactose-count');
        const hydrolyzedEl =document.getElementById('hydrolyzed');
        const scoreEl = document.getElementById('score');
        const gameOverEl = document.getElementById('game-over');
        const restartBtn = document.getElementById('restart-btn');
        const lactoseGame = document.getElementById('lactose-game');
        const lactoseGameContainer = document.getElementById('lactose-game-container');
        const lactoseGameInstructions = document.getElementById('lactose-game-instructions');
        const lactoseGameStartBtn = document.getElementById('lactose-game-start-btn');
        const lactoseGameStopBtn = document.getElementById('lactose-game-stop-btn');
        const lactoseGameResetBtn = document.getElementById('lactose-game-reset-btn');
        const lactoseGameInstructionsCloseBtn = document.getElementById('lactose-game-instructions-close-btn');
        const lactoseGameInstructionsOpenBtn = document.getElementById('lactose-game-instructions-open-btn');

// 乳糖酶游戏
document.getElementById('start-lactose-game').addEventListener('click', function() {
    if (gameRunning) return;

    gameRunning = true;
    lactoseGameTime = 60;
    score = 0;
    hydrolyzedCount = 0;
    lactoseCount = 10;
    lactoses = [];

    document.getElementById('score').textContent = score;
    document.getElementById('lactose-count').textContent = lactoseCount;
    document.getElementById('hydrolyzed').textContent = hydrolyzedCount;
    document.getElementById('game-time').textContent = lactoseGameTime;

    this.textContent = "游戏进行中...";
    this.disabled = true;

    // 创建乳糖分子
    spawnLactose(lactoseCount);

    // 启动游戏计时器
    lactoseGameTimer = setInterval(() => {
        lactoseGameTime--;
        document.getElementById('game-time').textContent = lactoseGameTime;

        if (lactoseGameTime <= 0 || hydrolyzedCount >= 10) {
            endGame();
        }

        // 每15秒新增一批乳糖
        if (lactoseGameTime % 5 === 0 && lactoseGameTime > 0) {
            spawnLactose(3);
            lactoseCount += 3;
            document.getElementById('lactose-count').textContent = lactoseCount;
        }
    }, 1000);

    // 让乳糖酶可拖动
    makeDraggable(lactase);
});

function spawnLactose(count) {
    for (let i = 0; i < count; i++) {
        const lactose = document.createElement('div');
        lactose.classList.add('lactose');
        lactose.textContent = '乳糖';
        lactose.dataset.id = Date.now() + i;

        const rect = intestine.getBoundingClientRect();
        const x = Math.random() * (rect.width - 60);
        const y = Math.random() * (rect.height - 60);

        lactose.style.left = `${x}px`;
        lactose.style.top = `${y}px`;

        intestine.appendChild(lactose);
        lactoses.push(lactose);

        // 随机移动
        animateLactose(lactose);
    }
}

function animateLactose(lactose) {
    const rect = intestine.getBoundingClientRect();
    const speed = 0.5 + Math.random() * 1;
    let dx = (Math.random() > 0.5 ? 1 : -1) * speed;
    let dy = (Math.random() > 0.5 ? 1 : -1) * speed;

    function move() {
        if (!gameRunning) return;

        const x = parseFloat(lactose.style.left);
        const y = parseFloat(lactose.style.top);

        // 边界检测
        if (x <= 0 || x >= rect.width - 60) dx *= -1;
        if (y <= 0 || y >= rect.height - 60) dy *= -1;

        lactose.style.left = `${x + dx}px`;
        lactose.style.top = `${y + dy}px`;

        requestAnimationFrame(move);
    }

    requestAnimationFrame(move);
}

function makeDraggable(element) {
    let offsetX, offsetY, isDragging = false;

    element.addEventListener('mousedown', (e) => {
        isDragging = true;
        offsetX = e.clientX - element.getBoundingClientRect().left;
        offsetY = e.clientY - element.getBoundingClientRect().top;
        element.style.cursor = 'grabbing';
    });

    document.addEventListener('mousemove', (e) => {
        if (!isDragging) return;

        const rect = intestine.getBoundingClientRect();
        let x = e.clientX - rect.left - offsetX;
        let y = e.clientY - rect.top - offsetY;

        // 边界检测
        x = Math.max(0, Math.min(x, rect.width - element.offsetWidth));
        y = Math.max(0, Math.min(y, rect.height - element.offsetHeight));

        element.style.left = `${x}px`;
        element.style.top = `${y}px`;

        // 检测碰撞
        checkCollision();
    });

    document.addEventListener('mouseup', () => {
        isDragging = false;
        element.style.cursor = 'grab';
    });
}

function checkCollision() {
    const lactaseRect = lactase.getBoundingClientRect();

    lactoses.forEach((lactose, index) => {
        if (!lactose.dataset.hydrolyzed) {
            const lactoseRect = lactose.getBoundingClientRect();

            if (
                lactaseRect.left < lactoseRect.right &&
                lactaseRect.right > lactoseRect.left &&
                lactaseRect.top < lactoseRect.bottom &&
                lactaseRect.bottom > lactoseRect.top
            ) {
                // 碰撞发生，分解乳糖
                hydrolyzeLactose(lactose);
                lactoses.splice(index, 1);
            }
        }
    });
}

function hydrolyzeLactose(lactose) {
    lactose.dataset.hydrolyzed = true;
    lactose.style.opacity = 0.5;

    // 创建分解产物
    const glucose = document.createElement('div');
    glucose.classList.add('glucose');
    glucose.textContent = '葡萄糖';
    glucose.style.left = lactose.style.left;
    glucose.style.top = lactose.style.top;

    const galactose = document.createElement('div');
    galactose.classList.add('galactose');
    galactose.textContent = '半乳糖';
    galactose.style.left = `${parseFloat(lactose.style.left) + 40}px`;
    galactose.style.top = lactose.style.top;

    intestine.appendChild(glucose);
    intestine.appendChild(galactose);

    // 动画效果
    setTimeout(() => {
        glucose.style.opacity = 1;
        galactose.style.opacity = 1;

        glucose.style.left = `${parseFloat(glucose.style.left) - 30}px`;
        galactose.style.left = `${parseFloat(galactose.style.left) + 30}px`;

        // 更新分数
        score += 10;
        hydrolyzedCount++;
        document.getElementById('score').textContent = score;
        document.getElementById('hydrolyzed').textContent = hydrolyzedCount;

        // 移除原乳糖
        setTimeout(() => {
            lactose.remove();

            // 移除产物
            setTimeout(() => {
                glucose.remove();
                galactose.remove();
            }, 2000);
        }, 500);
    }, 100);

    showFeedback("乳糖被分解了！+10分");
}

function endGame() {
    clearInterval(lactoseGameTimer);
    gameRunning = false;

    document.getElementById('start-lactose-game').textContent = "再来一局";
    document.getElementById('start-lactose-game').disabled = false;

    // 显示结果
    let message = "";
    if (hydrolyzedCount >= 10) {
        message = `恭喜你！成功分解了所有乳糖，得分：${score}！`;