<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
      user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .instructions {
      font-size: 14px;
      font-weight: 700;
      color: #475569;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      width: 100%;
      max-width: 600px;
    }

    .tool-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 18px;
      padding: 14px 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
      position: relative;
    }

    .tool-card.active {
      border-color: #0284c7;
      background-color: #f0f9ff;
      box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.2), 0 8px 20px rgba(2, 132, 199, 0.15);
      animation: softPulse 2.4s ease-in-out infinite;
    }

    @keyframes softPulse {
      0%, 100% { box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.25), 0 8px 16px rgba(2, 132, 199, 0.12); }
      50% { box-shadow: 0 0 0 6px rgba(2, 132, 199, 0.45), 0 10px 24px rgba(2, 132, 199, 0.25); }
    }

    /* Screen Displays */
    .device-screen {
      width: 100%;
      height: 82px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      position: relative;
      overflow: hidden;
      border: 3px solid #334155;
    }

    /* 1. Tablet */
    .tablet-screen {
      background: linear-gradient(135deg, #1e1b4b, #312e81, #0f172a);
      display: flex;
      flex-direction: column;
      gap: 6px;
      padding: 8px;
    }
    .tablet-apps {
      display: flex;
      gap: 6px;
      justify-content: center;
    }
    .app-icon {
      width: 16px;
      height: 16px;
      border-radius: 4px;
    }
    .app-1 { background: #38bdf8; box-shadow: 0 0 8px #38bdf8; }
    .app-2 { background: #f43f5e; box-shadow: 0 0 8px #f43f5e; }
    .app-3 { background: #eab308; box-shadow: 0 0 8px #eab308; }
    .tablet-bar {
      width: 24px;
      height: 3px;
      background: rgba(255, 255, 255, 0.6);
      border-radius: 2px;
      align-self: center;
    }

    /* 2. Clock */
    .clock-screen {
      background: #090d16;
    }
    .clock-time {
      font-family: ui-monospace, monospace;
      font-size: 22px;
      font-weight: 900;
      color: #38bdf8;
      text-shadow: 0 0 10px #38bdf8, 0 0 20px #0284c7;
      letter-spacing: 2px;
    }

    /* 3. Thermometer */
    .thermo-screen {
      background: #0f172a;
      flex-direction: column;
      gap: 2px;
    }
    .thermo-display {
      font-family: ui-monospace, monospace;
      font-size: 19px;
      font-weight: 800;
      color: #4ade80;
      text-shadow: 0 0 8px #4ade80;
      letter-spacing: 1px;
    }
    .beep-wave {
      font-size: 11px;
      color: #86efac;
      opacity: 0.9;
    }

    /* Card Details */
    .title {
      font-size: 15px;
      font-weight: 800;
      color: #1e2945;
      margin-bottom: 4px;
    }

    .feature {
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      line-height: 1.3;
      margin-bottom: 10px;
      min-height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .power-badge {
      background: #fef08a;
      border: 1px solid #facc15;
      color: #713f12;
      font-size: 11px;
      font-weight: 800;
      padding: 4px 8px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      gap: 3px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }

    @media (max-width: 440px) {
      .grid {
        grid-template-columns: 1fr;
        max-width: 280px;
      }
      .feature {
        min-height: auto;
      }
    }
  </style>
</head>
<body>

  <div class="instructions">
    <span>✦</span> Tap a tool to power it up
  </div>

  <div class="grid">
    
    <div class="tool-card active" onclick="selectCard(this, 587)">
      <div class="device-screen tablet-screen">
        <div class="tablet-apps">
          <div class="app-icon app-1"></div>
          <div class="app-icon app-2"></div>
          <div class="app-icon app-3"></div>
        </div>
        <div class="tablet-bar"></div>
      </div>
      <div class="title">Tablet</div>
      <div class="feature">Touchscreen + Battery</div>
      <div class="power-badge">⚡ Electric Power!</div>
    </div>

    
    <div class="tool-card" onclick="selectCard(this, 659)">
      <div class="device-screen clock-screen">
        <div class="clock-time">12:00</div>
      </div>
      <div class="title">Digital Clock</div>
      <div class="feature">Shows numbers with lights</div>
      <div class="power-badge">⚡ Electric Power!</div>
    </div>

    
    <div class="tool-card" onclick="selectCard(this, 880)">
      <div class="device-screen thermo-screen">
        <div class="thermo-display">98.6°F</div>
        <div class="beep-wave">((( Beep! )))</div>
      </div>
      <div class="title">Thermometer</div>
      <div class="feature">Screen beeps to read heat</div>
      <div class="power-badge">⚡ Electric Power!</div>
    </div>
  </div>

  <script>
    function playTone(freq) {
      try {
        const ctx = new (window.AudioContext || window.webkitAudioContext)();
        const osc = ctx.createOscillator();
        const gain = ctx.createGain();
        osc.type = 'sine';
        osc.frequency.setValueAtTime(freq, ctx.currentTime);
        gain.gain.setValueAtTime(0.12, ctx.currentTime);
        gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + 0.25);
        osc.connect(gain);
        gain.connect(ctx.destination);
        osc.start();
        osc.stop(ctx.currentTime + 0.25);
      } catch (e) {}
    }

    function selectCard(element, toneFreq) {
      document.querySelectorAll('.tool-card').forEach(card => card.classList.remove('active'));
      element.classList.add('active');
      playTone(toneFreq);
    }
  </script>
</body>
</html>

Sorting Digital and Non-Digital Tools in Daily Life

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .header-row {
      display: grid;
      grid-template-columns: 80px 1fr 1fr;
      gap: 8px;
      text-align: center;
      font-size: 13px;
      font-weight: 700;
    }

    .badge-nd {
      background: #ecfdf5;
      color: #059669;
      border: 1px solid #a7f3d0;
      border-radius: 6px;
      padding: 4px;
    }

    .badge-d {
      background: #eff6ff;
      color: #2563eb;
      border: 1px solid #bfdbfe;
      border-radius: 6px;
      padding: 4px;
    }

    .task-label-head {
      color: #64748b;
      font-size: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .row-card {
      display: grid;
      grid-template-columns: 80px 1fr 1fr;
      gap: 8px;
      align-items: stretch;
    }

    .task-title {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 6px 4px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
    }

    .tool-box {
      border-radius: 8px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      transition: box-shadow 0.2s ease, opacity 0.2s ease;
      cursor: pointer;
    }

    .tool-box.non-digital {
      background: #f0fdf4;
      border: 1.5px solid #86efac;
    }

    .tool-box.digital {
      background: #f0f9ff;
      border: 1.5px solid #93c5fd;
    }

    .tool-box:hover {
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }

    .tool-box.dimmed {
      opacity: 0.35;
    }

    .tool-icon {
      font-size: 24px;
      line-height: 1.2;
      margin-bottom: 2px;
    }

    .tool-name {
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 2px;
    }

    .tool-desc {
      font-size: 11px;
      color: #64748b;
      line-height: 1.1;
    }

    .controls {
      display: flex;
      justify-content: center;
      gap: 6px;
      margin-top: 4px;
    }

    .filter-btn {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: 16px;
      padding: 4px 10px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .filter-btn.active-all {
      background: #1e2945;
      color: #ffffff;
      border-color: #1e2945;
    }

    .filter-btn.active-nd {
      background: #059669;
      color: #ffffff;
      border-color: #059669;
    }

    .filter-btn.active-d {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
    }

    @media (max-width: 350px) {
      .header-row, .row-card {
        grid-template-columns: 65px 1fr 1fr;
        gap: 4px;
      }
      .tool-icon { font-size: 20px; }
      .tool-name { font-size: 11px; }
      .tool-desc { font-size: 10px; }
      .task-title { font-size: 11px; }
    }
  </style>
</head>
<body>

  <div class="controls">
    <button class="filter-btn active-all" id="btn-all" onclick="filterType('all')">Show All</button>
    <button class="filter-btn" id="btn-nd" onclick="filterType('nd')">Non-Digital</button>
    <button class="filter-btn" id="btn-d" onclick="filterType('d')">Digital</button>
  </div>

  <div class="header-row">
    <div class="task-label-head">Job</div>
    <div class="badge-nd">Non-Digital</div>
    <div class="badge-d">Digital</div>
  </div>

  
  <div class="row-card">
    <div class="task-title">
      <span>Telling</span>
      <span>Time</span>
    </div>
    <div class="tool-box non-digital" data-type="nd">
      <div class="tool-icon">🕰️</div>
      <div class="tool-name">Wall Clock</div>
      <div class="tool-desc">Gears & Springs</div>
    </div>
    <div class="tool-box digital" data-type="d">
      <div class="tool-icon">⌚</div>
      <div class="tool-name">Smartwatch</div>
      <div class="tool-desc">Battery & Screen</div>
    </div>
  </div>

  
  <div class="row-card">
    <div class="task-title">
      <span>Sharpen</span>
      <span>Pencils</span>
    </div>
    <div class="tool-box non-digital" data-type="nd">
      <div class="tool-icon">✏️</div>
      <div class="tool-name">Twist Sharpener</div>
      <div class="tool-desc">Hand Twist</div>
    </div>
    <div class="tool-box digital" data-type="d">
      <div class="tool-icon">⚡</div>
      <div class="tool-name">Electric Sharpener</div>
      <div class="tool-desc">Motor & Plug</div>
    </div>
  </div>

  
  <div class="row-card">
    <div class="task-title">
      <span>Reading</span>
      <span>Books</span>
    </div>
    <div class="tool-box non-digital" data-type="nd">
      <div class="tool-icon">📖</div>
      <div class="tool-name">Paper Book</div>
      <div class="tool-desc">Paper Pages</div>
    </div>
    <div class="tool-box digital" data-type="d">
      <div class="tool-icon">📱</div>
      <div class="tool-name">E-Reader</div>
      <div class="tool-desc">Screen & Chip</div>
    </div>
  </div>

  <script>
    function filterType(type) {
      const boxes = document.querySelectorAll('.tool-box');
      const btnAll = document.getElementById('btn-all');
      const btnNd = document.getElementById('btn-nd');
      const btnD = document.getElementById('btn-d');

      btnAll.className = 'filter-btn';
      btnNd.className = 'filter-btn';
      btnD.className = 'filter-btn';

      if (type === 'all') {
        btnAll.classList.add('active-all');
        boxes.forEach(b => b.classList.remove('dimmed'));
      } else if (type === 'nd') {
        btnNd.classList.add('active-nd');
        boxes.forEach(b => {
          if (b.getAttribute('data-type') === 'nd') {
            b.classList.remove('dimmed');
          } else {
            b.classList.add('dimmed');
          }
        });
      } else if (type === 'd') {
        btnD.classList.add('active-d');
        boxes.forEach(b => {
          if (b.getAttribute('data-type') === 'd') {
            b.classList.remove('dimmed');
          } else {
            b.classList.add('dimmed');
          }
        });
      }
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: #f8fafc;
      color: #1e2945;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      user-select: none;
    }

    .nav-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 12px;
      width: 100%;
      max-width: 340px;
    }

    .tab-btn {
      flex: 1;
      padding: 8px 10px;
      font-size: 14px;
      font-weight: 700;
      border-radius: 12px;
      border: 2px solid #e2e8f0;
      background: #ffffff;
      color: #64748b;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      transition: all 0.2s ease;
    }

    .tab-btn.active {
      border-color: #22b7ff;
      background: #e0f2fe;
      color: #0284c7;
    }

    .scenario-header {
      text-align: center;
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #0f172a;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .cards-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      width: 100%;
      max-width: 340px;
    }

    .choice-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 8px;
      text-align: center;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      min-height: 125px;
      justify-content: center;
      transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .choice-card:active {
      background: #f1f5f9;
    }

    .card-icon {
      font-size: 34px;
      line-height: 1;
    }

    .card-title {
      font-size: 14px;
      font-weight: 700;
      line-height: 1.2;
    }

    .choice-card.correct {
      border-color: #10b981;
      background: #ecfdf5;
      box-shadow: 0 0 0 2px #10b981;
    }

    .choice-card.incorrect {
      border-color: #cbd5e1;
      background: #f8fafc;
      opacity: 0.55;
    }

    .feedback-box {
      margin-top: 12px;
      width: 100%;
      max-width: 340px;
      min-height: 38px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      text-align: center;
      padding: 6px 10px;
      transition: all 0.2s ease;
    }

    .feedback-box.correct {
      background: #d1fae5;
      color: #065f46;
      border: 1px solid #10b981;
    }

    .feedback-box.incorrect {
      background: #fee2e2;
      color: #991b1b;
      border: 1px solid #f87171;
    }

    .feedback-box.hint {
      background: #f1f5f9;
      color: #64748b;
      border: 1px dashed #cbd5e1;
    }
  </style>
</head>
<body>

  <div class="nav-tabs">
    <button class="tab-btn active" id="tab0" onclick="setScenario(0)">⛺ Woods</button>
    <button class="tab-btn" id="tab1" onclick="setScenario(1)">⚡ Math</button>
  </div>

  <div class="scenario-header" id="scenarioTitle">⛺ No Wall Plugs!</div>

  <div class="cards-grid">
    <div class="choice-card" id="cardA" onclick="chooseOption('A')">
      <div class="card-icon" id="iconA">🔦</div>
      <div class="card-title" id="titleA">Flashlight</div>
    </div>
    <div class="choice-card" id="cardB" onclick="chooseOption('B')">
      <div class="card-icon" id="iconB">🔌</div>
      <div class="card-title" id="titleB">Desk Lamp</div>
    </div>
  </div>

  <div class="feedback-box hint" id="feedback">👆 Tap the best tool!</div>

  <script>
    const data = [
      {
        title: "⛺ No Wall Plugs!",
        optA: { icon: "🔦", title: "Flashlight", correct: true },
        optB: { icon: "🔌", title: "Desk Lamp", correct: false },
        winMsg: "✓ Best Fit! Battery powered",
        loseMsg: "Needs a wall outlet!"
      },
      {
        title: "⚡ Quick Big Math!",
        optA: { icon: "✏️", title: "Scrap Paper", correct: false },
        optB: { icon: "📱", title: "Calculator", correct: true },
        winMsg: "⭐ Best Fit! Computes fast",
        loseMsg: "Paper is much slower!"
      }
    ];

    let currentIdx = 0;

    function playTone(freq, dur = 0.2) {
      try {
        const ctx = new (window.AudioContext || window.webkitAudioContext)();
        const osc = ctx.createOscillator();
        const gain = ctx.GainNode ? new GainNode(ctx) : ctx.createGain();
        osc.frequency.value = freq;
        osc.connect(gain);
        gain.connect(ctx.destination);
        gain.gain.setValueAtTime(0.15, ctx.currentTime);
        gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + dur);
        osc.start();
        osc.stop(ctx.currentTime + dur);
      } catch (e) {}
    }

    function setScenario(idx) {
      currentIdx = idx;
      document.getElementById('tab0').classList.toggle('active', idx === 0);
      document.getElementById('tab1').classList.toggle('active', idx === 1);
      
      const s = data[idx];
      document.getElementById('scenarioTitle').textContent = s.title;
      document.getElementById('iconA').textContent = s.optA.icon;
      document.getElementById('titleA').textContent = s.optA.title;
      document.getElementById('iconB').textContent = s.optB.icon;
      document.getElementById('titleB').textContent = s.optB.title;

      const cardA = document.getElementById('cardA');
      const cardB = document.getElementById('cardB');
      cardA.className = 'choice-card';
      cardB.className = 'choice-card';

      const fb = document.getElementById('feedback');
      fb.className = 'feedback-box hint';
      fb.textContent = '👆 Tap the best tool!';
    }

    function chooseOption(opt) {
      const s = data[currentIdx];
      const isA = (opt === 'A');
      const isCorrect = isA ? s.optA.correct : s.optB.correct;
      
      const cardA = document.getElementById('cardA');
      const cardB = document.getElementById('cardB');
      const fb = document.getElementById('feedback');

      cardA.className = 'choice-card';
      cardB.className = 'choice-card';

      if (isCorrect) {
        playTone(587, 0.25);
        if (isA) {
          cardA.classList.add('correct');
          cardB.classList.add('incorrect');
        } else {
          cardB.classList.add('correct');
          cardA.classList.add('incorrect');
        }
        fb.className = 'feedback-box correct';
        fb.textContent = s.winMsg;
      } else {
        playTone(260, 0.2);
        if (isA) {
          cardA.classList.add('incorrect');
        } else {
          cardB.classList.add('incorrect');
        }
        fb.className = 'feedback-box incorrect';
        fb.textContent = s.loseMsg;
      }
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="4:3">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: transparent;
      color: #1e2945;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      width: 100%;
      max-width: 620px;
    }

    @media (max-width: 480px) {
      .grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
    }

    .tool-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      padding: 16px 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      user-select: none;
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    }

    .tool-card:active {
      transform: translateY(-4px);
    }

    .tool-card.active {
      border-color: #10b981;
      box-shadow: 0 6px 16px rgba(16, 185, 129, 0.18);
      transform: translateY(-4px);
    }

    .icon-area {
      font-size: 42px;
      line-height: 1;
      margin-bottom: 8px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.3s ease;
    }

    .tool-card.active .icon-area {
      transform: scale(1.15);
    }

    .title {
      font-size: 17px;
      font-weight: 700;
      color: #1e2945;
      margin-bottom: 4px;
    }

    .action-text {
      font-size: 13px;
      font-weight: 500;
      color: #475569;
      margin-bottom: 12px;
      min-height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .badge {
      background: #ecfdf5;
      border: 1px solid #a7f3d0;
      color: #047857;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 20px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      line-height: 1.2;
    }

    .badge-sub {
      font-size: 10px;
      color: #059669;
      font-weight: 600;
      margin-top: 2px;
    }

    .hint {
      font-size: 12px;
      color: #64748b;
      margin-top: 12px;
      font-weight: 500;
    }
  </style>
</head>
<body>

  <div class="grid">
    
    <div class="tool-card" onclick="selectCard(this)">
      <div class="icon-area">✂️</div>
      <div class="title">Scissors</div>
      <div class="action-text">Squeeze with fingers</div>
      <div class="badge">✋ Hand Powered!</div>
      <div class="badge-sub">No batteries!</div>
    </div>

    
    <div class="tool-card" onclick="selectCard(this)">
      <div class="icon-area">✏️</div>
      <div class="title">Pencil</div>
      <div class="action-text">Press on paper</div>
      <div class="badge">✋ Hand Powered!</div>
      <div class="badge-sub">No batteries!</div>
    </div>

    
    <div class="tool-card" onclick="selectCard(this)">
      <div class="icon-area">🌀</div>
      <div class="title">Sharpener</div>
      <div class="action-text">Twist with wrist</div>
      <div class="badge">✋ Hand Powered!</div>
      <div class="badge-sub">No batteries!</div>
    </div>
  </div>

  <div class="hint">Tap a tool to feel the action</div>

  <script>
    function selectCard(element) {
      document.querySelectorAll('.tool-card').forEach(card => card.classList.remove('active'));
      element.classList.add('active');
    }
  </script>
</body>
</html>

OGM.1.STEM.2

Aligned learning resources

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