<!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 {
      background: #ffffff;
      color: #1e2945;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      padding: 16px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
    }

    /* Tabs */
    .selector {
      display: flex;
      gap: 8px;
      margin-bottom: 20px;
      background: #f1f5f9;
      padding: 4px;
      border-radius: 999px;
    }
    .tab-btn {
      border: none;
      background: transparent;
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .tab-btn.active {
      background: #ffffff;
      color: #1e2945;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    }

    /* Builder Layout */
    .builder-area {
      width: 100%;
      max-width: 600px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
    }

    /* Formula Row */
    .formula-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      width: 100%;
      flex-wrap: wrap;
    }

    .puzzle-piece {
      flex: 1 1 90px;
      min-width: 90px;
      max-width: 140px;
      padding: 12px 8px;
      border-radius: 12px;
      border: 2.5px solid;
      background: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      cursor: default;
    }

    .piece-prefix {
      border-color: #0284c7;
      background: #f0f9ff;
    }
    .piece-root {
      border-color: #059669;
      background: #ecfdf5;
    }
    .piece-suffix {
      border-color: #7c3aed;
      background: #f5f3ff;
    }

    .tag {
      font-size: 11px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 4px;
    }
    .piece-prefix .tag { color: #0284c7; }
    .piece-root .tag { color: #059669; }
    .piece-suffix .tag { color: #7c3aed; }

    .morpheme {
      font-size: 17px;
      font-weight: 800;
      color: #1e2945;
      margin-bottom: 2px;
    }

    .meaning {
      font-size: 12px;
      font-weight: 500;
      color: #475569;
    }

    .math-sym {
      font-size: 20px;
      font-weight: 700;
      color: #94a3b8;
      user-select: none;
    }

    /* Result Card */
    .result-box {
      width: 100%;
      max-width: 480px;
      background: #f8fafc;
      border: 2px dashed #cbd5e1;
      border-radius: 16px;
      padding: 14px 18px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 6px;
    }

    .result-word {
      font-size: 22px;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 1px;
    }

    .w-prefix { color: #0284c7; }
    .w-root { color: #059669; }
    .w-suffix { color: #7c3aed; }

    .result-desc {
      font-size: 13px;
      font-weight: 500;
      color: #475569;
    }
  </style>
</head>
<body>

  <div class="selector">
    <button class="tab-btn active" onclick="setWord(0)">Photosynthesis</button>
    <button class="tab-btn" onclick="setWord(1)">Hydrothermal</button>
  </div>

  <div class="builder-area">
    <div class="formula-row">
      
      <div class="puzzle-piece piece-prefix">
        <span class="tag">Prefix</span>
        <span class="morpheme" id="prefixText">photo-</span>
        <span class="meaning" id="prefixMean">light ☀️</span>
      </div>

      <span class="math-sym">+</span>

      
      <div class="puzzle-piece piece-root">
        <span class="tag">Root</span>
        <span class="morpheme" id="rootText">synth-</span>
        <span class="meaning" id="rootMean">put together 🧩</span>
      </div>

      <span class="math-sym">+</span>

      
      <div class="puzzle-piece piece-suffix">
        <span class="tag">Suffix</span>
        <span class="morpheme" id="suffixText">-esis</span>
        <span class="meaning" id="suffixMean">process ⚙️</span>
      </div>
    </div>

    <span class="math-sym">↓</span>

    
    <div class="result-box">
      <div class="result-word">
        <span class="w-prefix" id="wPrefix">photo</span>
        <span class="w-root" id="wRoot">synth</span>
        <span class="w-suffix" id="wSuffix">esis</span>
      </div>
      <div class="result-desc" id="resDesc">
        Process of using light to put together food 🌱
      </div>
    </div>
  </div>

  <script>
    const words = [
      {
        prefix: 'photo-',
        prefixMean: 'light ☀️',
        root: 'synth-',
        rootMean: 'put together 🧩',
        suffix: '-esis',
        suffixMean: 'process ⚙️',
        wPrefix: 'photo',
        wRoot: 'synth',
        wSuffix: 'esis',
        desc: 'Process of using light to put together food 🌱'
      },
      {
        prefix: 'hydro-',
        prefixMean: 'water 💧',
        root: 'therm-',
        rootMean: 'heat 🔥',
        suffix: '-al',
        suffixMean: 'relating to 🔗',
        wPrefix: 'hydro',
        wRoot: 'therm',
        wSuffix: 'al',
        desc: 'Relating to hot water ♨️'
      }
    ];

    function setWord(index) {
      const data = words[index];
      const buttons = document.querySelectorAll('.tab-btn');
      buttons.forEach((b, i) => b.classList.toggle('active', i === index));

      document.getElementById('prefixText').textContent = data.prefix;
      document.getElementById('prefixMean').textContent = data.prefixMean;
      document.getElementById('rootText').textContent = data.root;
      document.getElementById('rootMean').textContent = data.rootMean;
      document.getElementById('suffixText').textContent = data.suffix;
      document.getElementById('suffixMean').textContent = data.suffixMean;

      document.getElementById('wPrefix').textContent = data.wPrefix;
      document.getElementById('wRoot').textContent = data.wRoot;
      document.getElementById('wSuffix').textContent = data.wSuffix;
      document.getElementById('resDesc').textContent = data.desc;
    }
  </script>
</body>
</html>

Determining Domain-Specific Vocabulary in Scientific Texts

<!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">
  <title>Domain-Specific Vocabulary</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 12px;
      min-height: 100%;
    }

    .header-bar {
      text-align: center;
      margin-bottom: 12px;
    }

    .term-title {
      font-size: 22px;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.5px;
    }

    .term-pos {
      font-size: 14px;
      font-weight: 500;
      color: #64748b;
      margin-left: 4px;
    }

    .cards-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      width: 100%;
      max-width: 600px;
    }

    @media (max-width: 480px) {
      .cards-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }
      .term-title {
        font-size: 19px;
      }
    }

    .domain-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: 14px;
      padding: 14px 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      cursor: pointer;
      user-select: none;
      transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
      position: relative;
    }

    .domain-card:hover {
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
    }

    .domain-card.active-bio {
      border-color: #10b981;
      box-shadow: 0 0 0 1px #10b981, 0 4px 14px rgba(16, 185, 129, 0.15);
    }

    .domain-card.active-phys {
      border-color: #6366f1;
      box-shadow: 0 0 0 1px #6366f1, 0 4px 14px rgba(99, 102, 241, 0.15);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 10px;
    }

    .badge-bio {
      background: #ecfdf5;
      color: #047857;
      border: 1px solid #a7f3d0;
    }

    .badge-phys {
      background: #eef2ff;
      color: #4338ca;
      border: 1px solid #c7d2fe;
    }

    .visual-box {
      width: 100%;
      height: 105px;
      background: #f8fafc;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 10px;
      position: relative;
      overflow: hidden;
    }

    /* Biology Graphic: Blood Tube */
    .tube-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .test-tube {
      width: 32px;
      height: 78px;
      border: 2px solid #94a3b8;
      border-top: none;
      border-radius: 0 0 16px 16px;
      position: relative;
      overflow: hidden;
      background: #fff;
    }

    .tube-top {
      position: absolute;
      top: -4px;
      left: 50%;
      transform: translateX(-50%);
      width: 38px;
      height: 5px;
      border-radius: 3px;
      background: #64748b;
    }

    .liquid-plasma {
      position: absolute;
      top: 10px;
      left: 0;
      right: 0;
      height: 38px;
      background: #fef08a;
      border-bottom: 1px dashed #ca8a04;
    }

    .liquid-cells {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 28px;
      background: #ef4444;
    }

    .tube-labels {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 64px;
      font-size: 11px;
      font-weight: 700;
      text-align: left;
    }

    .lbl-yellow { color: #b45309; }
    .lbl-red { color: #dc2626; }

    /* Physics Graphic: Ionized Gas */
    .plasma-core {
      position: relative;
      width: 72px;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .energy-glow {
      position: absolute;
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: radial-gradient(circle, #c7d2fe 20%, #818cf8 60%, rgba(99,102,241,0) 80%);
      opacity: 0.8;
      animation: pulseGlow 2.5s ease-in-out infinite alternate;
    }

    @keyframes pulseGlow {
      0% { transform: scale(0.9); opacity: 0.6; }
      100% { transform: scale(1.15); opacity: 0.95; }
    }

    .particle {
      position: absolute;
      font-size: 11px;
      font-weight: 800;
      border-radius: 50%;
      width: 18px;
      height: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .particle-ion {
      background: #6366f1;
      color: #fff;
      top: 8px;
      left: 10px;
      box-shadow: 0 0 6px #6366f1;
    }

    .particle-elec {
      background: #38bdf8;
      color: #082f49;
      font-size: 10px;
      bottom: 8px;
      right: 10px;
      box-shadow: 0 0 6px #38bdf8;
    }

    .spark-center {
      font-size: 22px;
      z-index: 2;
      animation: spinSlow 8s linear infinite;
    }

    @keyframes spinSlow {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    .def-label {
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      line-height: 1.35;
    }

    .footer-hint {
      margin-top: 10px;
      font-size: 12px;
      font-weight: 500;
      color: #64748b;
      display: flex;
      align-items: center;
      gap: 5px;
    }
  </style>
</head>
<body>

  <div class="header-bar">
    <span class="term-title">Plasma</span>
    <span class="term-pos">(n.)</span>
  </div>

  <div class="cards-grid">
    
    <div class="domain-card active-bio" id="cardBio" onclick="selectDomain('bio')">
      <div class="badge badge-bio">🌿 Biology</div>
      <div class="visual-box">
        <div class="tube-wrap">
          <div class="test-tube">
            <div class="tube-top"></div>
            <div class="liquid-plasma"></div>
            <div class="liquid-cells"></div>
          </div>
          <div class="tube-labels">
            <span class="lbl-yellow">◀ Plasma (55%)</span>
            <span class="lbl-red">◀ Cells (45%)</span>
          </div>
        </div>
      </div>
      <div class="def-label">Liquid portion of blood</div>
    </div>

    
    <div class="domain-card active-phys" id="cardPhys" onclick="selectDomain('phys')">
      <div class="badge badge-phys">⚡ Physics</div>
      <div class="visual-box">
        <div class="plasma-core">
          <div class="energy-glow"></div>
          <span class="spark-center">✦</span>
          <div class="particle particle-ion">+</div>
          <div class="particle particle-elec">e⁻</div>
        </div>
      </div>
      <div class="def-label">Ionized high-energy gas</div>
    </div>
  </div>

  <div class="footer-hint">
    <span>💡 Subject domain determines the exact meaning.</span>
  </div>

  <script>
    function selectDomain(type) {
      const bio = document.getElementById('cardBio');
      const phys = document.getElementById('cardPhys');
      
      if (type === 'bio') {
        bio.classList.add('active-bio');
        phys.classList.remove('active-phys');
      } else {
        phys.classList.add('active-phys');
        bio.classList.remove('active-bio');
      }
    }
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #0f172a;
      background: #ffffff;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* Passage Box */
    .passage {
      background: #f8fafc;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      padding: 8px 10px;
      font-size: 13px;
      line-height: 1.5;
      color: #1e293b;
    }
    .hl {
      transition: all 0.2s ease;
      border-radius: 4px;
      padding: 2px 5px;
      font-weight: 700;
      display: inline-block;
    }
    .hl-1 { background: #e0f2fe; color: #0369a1; border-bottom: 2px solid #0284c7; }
    .hl-2 { background: #fef3c7; color: #92400e; border-bottom: 2px solid #d97706; }
    .hl-3 { background: #dcfce7; color: #166534; border-bottom: 2px solid #15803d; }
    
    .passage .hl.active-hl {
      color: #ffffff;
    }
    .passage .hl-1.active-hl { background: #0284c7; border-bottom-color: #0369a1; }
    .passage .hl-2.active-hl { background: #d97706; border-bottom-color: #b45309; }
    .passage .hl-3.active-hl { background: #15803d; border-bottom-color: #166534; }

    /* Navigation Row */
    .nav-row {
      display: flex;
      gap: 6px;
      align-items: center;
    }
    .tab-btn {
      flex: 1;
      border: 1px solid #cbd5e1;
      background: #f8fafc;
      border-radius: 6px;
      padding: 6px 4px;
      font-size: 12px;
      font-weight: 700;
      color: #334155;
      cursor: pointer;
      text-align: center;
      transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
      user-select: none;
    }
    .tab-btn:hover {
      background: #f1f5f9;
    }
    .tab-btn.active {
      background: #0284c7;
      border-color: #0284c7;
      color: #ffffff;
    }
    .play-btn {
      width: 32px;
      height: 30px;
      border: 1px solid #cbd5e1;
      background: #f8fafc;
      border-radius: 6px;
      font-size: 12px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0f172a;
      user-select: none;
      flex-shrink: 0;
    }
    .play-btn:hover {
      background: #e2e8f0;
    }

    /* Visual Stage */
    .stage-container {
      position: relative;
      height: 130px;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      background: #fafafa;
      overflow: hidden;
    }
    .step-view {
      position: absolute;
      inset: 0;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.25s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 8px;
    }
    .step-view.active {
      opacity: 1;
      pointer-events: auto;
    }

    /* Step 1: Morphology */
    .morph-grid {
      display: flex;
      align-items: center;
      gap: 5px;
      justify-content: center;
      width: 100%;
    }
    .morph-tile {
      background: #ffffff;
      border: 1px solid #94a3b8;
      border-radius: 6px;
      padding: 6px 8px;
      text-align: center;
      min-width: 80px;
      box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    }
    .morph-tile.result {
      border-color: #0284c7;
      background: #f0f9ff;
    }
    .term-root { font-size: 13px; font-weight: 800; color: #0369a1; }
    .term-mean { font-size: 11px; font-weight: 600; color: #334155; margin-top: 2px; }
    .op-sym { font-size: 14px; font-weight: 800; color: #64748b; }

    /* Step 2: Contrast */
    .contrast-row {
      display: flex;
      align-items: center;
      gap: 10px;
      width: 100%;
      justify-content: center;
    }
    .contrast-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 6px;
      padding: 6px 8px;
      text-align: center;
      width: 115px;
    }
    .contrast-card.sun { border-color: #d97706; background: #fffbeb; }
    .contrast-card.dark { border-color: #475569; background: #f8fafc; }
    .card-icon { font-size: 18px; line-height: 1.2; }
    .card-title { font-size: 11px; font-weight: 800; color: #0f172a; margin-top: 2px; }
    .card-sub { font-size: 10px; font-weight: 600; color: #334155; }
    .vs-badge {
      font-size: 13px;
      font-weight: 800;
      color: #991b1b;
      background: #fee2e2;
      border: 1px solid #fca5a5;
      border-radius: 50%;
      width: 26px;
      height: 26px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    /* Step 3: Context */
    .flow-row {
      display: flex;
      align-items: center;
      gap: 6px;
      justify-content: center;
      width: 100%;
    }
    .flow-box {
      border: 1px solid #16a34a;
      background: #f0fdf4;
      border-radius: 6px;
      padding: 6px 8px;
      text-align: center;
      min-width: 82px;
    }
    .flow-icon { font-size: 16px; }
    .flow-label { font-size: 11px; font-weight: 800; color: #14532d; }
    .flow-sub { font-size: 10px; font-weight: 600; color: #166534; }

    @media (max-width: 380px) {
      .tab-btn { font-size: 11px; padding: 5px 2px; }
      .morph-tile { min-width: 70px; padding: 5px 4px; }
      .term-root { font-size: 12px; }
      .term-mean { font-size: 10px; }
      .contrast-card { width: 95px; padding: 5px 4px; }
      .flow-box { min-width: 70px; padding: 5px 4px; }
      .stage-container { height: 125px; }
    }
  </style>
</head>
<body>

  
  <div class="passage">
    Vent <span id="hl0" class="hl hl-1 active-hl">extremophiles</span> thrive in darkness, unlike <span id="hl1" class="hl hl-2">phototrophic</span> organisms, and <span id="hl2" class="hl hl-3">synthesize nutrients from sulfur</span>.
  </div>

  
  <div class="nav-row">
    <button class="tab-btn active" id="tab0" type="button">1. Morphology</button>
    <button class="tab-btn" id="tab1" type="button">2. Contrast</button>
    <button class="tab-btn" id="tab2" type="button">3. Context</button>
    <button class="play-btn" id="playBtn" type="button" title="Play / Pause">⏸</button>
  </div>

  
  <div class="stage-container">
    
    
    <div class="step-view active" id="view0">
      <div class="morph-grid">
        <div class="morph-tile">
          <div class="term-root">extremo-</div>
          <div class="term-mean">🌋 extreme</div>
        </div>
        <div class="op-sym">+</div>
        <div class="morph-tile">
          <div class="term-root">-phile</div>
          <div class="term-mean">❤️ lover of</div>
        </div>
        <div class="op-sym">=</div>
        <div class="morph-tile result">
          <div class="term-root">Thriver</div>
          <div class="term-mean">in harsh zones</div>
        </div>
      </div>
    </div>

    
    <div class="step-view" id="view1">
      <div class="contrast-row">
        <div class="contrast-card sun">
          <div class="card-icon">☀️</div>
          <div class="card-title">Phototrophic</div>
          <div class="card-sub">Sun-dependent</div>
        </div>
        <div class="vs-badge">≠</div>
        <div class="contrast-card dark">
          <div class="card-icon">🌑</div>
          <div class="card-title">Dark Vent</div>
          <div class="card-sub">No sunlight</div>
        </div>
      </div>
    </div>

    
    <div class="step-view" id="view2">
      <div class="flow-row">
        <div class="flow-box">
          <div class="flow-icon">🌋</div>
          <div class="flow-label">Sulfur</div>
          <div class="flow-sub">Chemical</div>
        </div>
        <div class="op-sym">➔</div>
        <div class="flow-box">
          <div class="flow-icon">🧪</div>
          <div class="flow-label">Synthesis</div>
          <div class="flow-sub">Make food</div>
        </div>
        <div class="op-sym">➔</div>
        <div class="flow-box">
          <div class="flow-icon">🦠</div>
          <div class="flow-label">Energy</div>
          <div class="flow-sub">Zero light</div>
        </div>
      </div>
    </div>

  </div>

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        document.getElementById('tab0'),
        document.getElementById('tab1'),
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      const views = [
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          if (hl) hl.classList.toggle('active-hl', i === idx);
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      setStep(0);
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</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 {
      background-color: #f8f9fa;
      color: #1e2945;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
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      display: flex;
      flex-direction: column;
      gap: 12px;
      min-height: 100%;
      user-select: none;
    }

    .title {
      font-size: 15px;
      font-weight: 700;
      text-align: center;
      color: #1e2945;
      letter-spacing: -0.2px;
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    .tools-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
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    .tool-card {
      background: #ffffff;
      border: 2px solid #e5e7eb;
      border-radius: 12px;
      padding: 10px 8px;
      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;
    }

    .tool-card.active {
      border-color: #22b7ff;
      background: #f0f9ff;
      box-shadow: 0 4px 12px rgba(34, 183, 255, 0.15);
    }

    .tool-icon {
      font-size: 22px;
      margin-bottom: 4px;
      line-height: 1;
    }

    .tool-name {
      font-size: 13px;
      font-weight: 700;
      color: #1e2945;
      line-height: 1.2;
    }

    .tool-desc {
      font-size: 11px;
      color: #64748b;
      margin-top: 3px;
      line-height: 1.25;
    }

    .demo-container {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 14px 12px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 140px;
      position: relative;
    }

    .demo-view {
      display: none;
      width: 100%;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      animation: fadeIn 0.25s ease-out;
    }

    .demo-view.active {
      display: flex;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(4px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* Strategy 1: Context Clues */
    .sentence-box {
      font-size: 14px;
      line-height: 1.5;
      text-align: center;
      color: #334155;
      background: #f8fafc;
      padding: 8px 12px;
      border-radius: 8px;
      border: 1px dashed #cbd5e1;
      max-width: 100%;
    }

    .target-word {
      font-weight: 700;
      color: #0284c7;
      border-bottom: 2px solid #22b7ff;
      padding: 0 2px;
    }

    .clue-tag {
      background: #e0f2fe;
      color: #0369a1;
      font-weight: 600;
      padding: 1px 4px;
      border-radius: 4px;
    }

    .clue-pointer {
      font-size: 12px;
      font-weight: 600;
      color: #0369a1;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    /* Strategy 2: Morphology */
    .morph-parts {
      display: flex;
      align-items: center;
      gap: 6px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .morph-block {
      background: #f8fafc;
      border: 1.5px solid #cbd5e1;
      border-radius: 8px;
      padding: 6px 10px;
      text-align: center;
    }

    .morph-root {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
    }

    .morph-sub {
      font-size: 10px;
      color: #0284c7;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .plus-sign {
      font-size: 14px;
      font-weight: 700;
      color: #94a3b8;
    }

    .equals-pill {
      background: #22b7ff;
      color: #ffffff;
      font-size: 13px;
      font-weight: 700;
      padding: 6px 12px;
      border-radius: 20px;
    }

    /* Strategy 3: Glossary */
    .glossary-card {
      background: #f8fafc;
      border-left: 4px solid #22b7ff;
      border-radius: 0 8px 8px 0;
      padding: 8px 12px;
      width: 100%;
      max-width: 320px;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .glossary-header {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
    }

    .glossary-term {
      font-size: 15px;
      font-weight: 700;
      color: #1e2945;
    }

    .glossary-badge {
      font-size: 10px;
      font-weight: 600;
      background: #e2e8f0;
      color: #475569;
      padding: 2px 6px;
      border-radius: 4px;
    }

    .glossary-def {
      font-size: 13px;
      color: #475569;
      line-height: 1.35;
    }

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      .tool-card { padding: 6px 4px; }
      .tool-icon { font-size: 18px; }
      .tool-name { font-size: 11px; }
      .tool-desc { font-size: 9px; }
      .sentence-box { font-size: 12px; }
    }
  </style>
</head>
<body>
  <div class="title">Scientific Vocabulary Toolkit</div>

  <div class="tools-grid">
    <div class="tool-card active" id="tab-0" onclick="showTab(0)">
      <div class="tool-icon">🔍</div>
      <div class="tool-name">Context</div>
      <div class="tool-desc">Surrounding text clues</div>
    </div>
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      <div class="tool-icon">🧩</div>
      <div class="tool-name">Morphology</div>
      <div class="tool-desc">Roots & affixes</div>
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    <div class="tool-card" id="tab-2" onclick="showTab(2)">
      <div class="tool-icon">📖</div>
      <div class="tool-name">Glossary</div>
      <div class="tool-desc">Direct definitions</div>
    </div>
  </div>

  <div class="demo-container">
    
    <div class="demo-view active" id="view-0">
      <div class="sentence-box">
        "Deep below, <span class="target-word">hydrothermal</span> vents release <span class="clue-tag">boiling water</span>."
      </div>
      <div class="clue-pointer">
        <span>🔍 Clues:</span>
        <em>"boiling water" → heat + water</em>
      </div>
    </div>

    
    <div class="demo-view" id="view-1">
      <div class="morph-parts">
        <div class="morph-block">
          <div class="morph-root">hydro-</div>
          <div class="morph-sub">water</div>
        </div>
        <div class="plus-sign">+</div>
        <div class="morph-block">
          <div class="morph-root">therm</div>
          <div class="morph-sub">heat</div>
        </div>
        <div class="plus-sign">+</div>
        <div class="morph-block">
          <div class="morph-root">-al</div>
          <div class="morph-sub">related to</div>
        </div>
      </div>
      <div class="equals-pill">✦ Hot Water Process</div>
    </div>

    
    <div class="demo-view" id="view-2">
      <div class="glossary-card">
        <div class="glossary-header">
          <span class="glossary-term">hydrothermal</span>
          <span class="glossary-badge">Earth Science</span>
        </div>
        <div class="glossary-def">
          <strong>adj.</strong> Relating to the action of heated water within Earth's crust.
        </div>
      </div>
    </div>
  </div>

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</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">
  <script src="{{VENDOR_CDN}}/classace-diagram.js"></script>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      user-select: none;
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    /* Top Legend & Controls */
    .header-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
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      display: flex;
      gap: 12px;
      font-size: 13px;
      font-weight: 600;
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    .legend-item {
      display: flex;
      align-items: center;
      gap: 6px;
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    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
    }
    .dot-target { background: #22b7ff; }
    .dot-clue { background: #10b981; }

    .ctrl-btn {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 6px;
      padding: 4px 10px;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 4px;
      transition: background 0.2s;
    }
    .ctrl-btn:hover {
      background: #f1f5f9;
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    /* Tab Buttons */
    .tabs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 6px;
    }
    .tab-btn {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 8px;
      padding: 8px 4px;
      font-size: 13px;
      font-weight: 600;
      color: #64748b;
      cursor: pointer;
      text-align: center;
      transition: all 0.25s ease;
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    .tab-btn.active {
      border-color: #22b7ff;
      background: #f0f9ff;
      color: #0284c7;
      box-shadow: 0 2px 6px rgba(34, 183, 255, 0.15);
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    /* Main Display Area */
    .stage {
      position: relative;
      height: 230px;
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 12px;
      overflow: hidden;
    }
    .card-panel {
      position: absolute;
      inset: 0;
      padding: 16px 14px;
      display: flex;
      flex-direction: column;
      justify-content: space-around;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
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    .card-panel.active {
      opacity: 1;
      pointer-events: auto;
    }

    /* Sentence Box */
    .sentence-box {
      font-size: 16px;
      line-height: 1.6;
      color: #1e2945;
      background: #f8fafc;
      padding: 12px 14px;
      border-radius: 8px;
      border-left: 4px solid #22b7ff;
    }
    .hl-target {
      background: rgba(34, 183, 255, 0.18);
      color: #0284c7;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 4px;
      border-bottom: 2px solid #22b7ff;
    }
    .hl-clue {
      background: rgba(16, 185, 129, 0.18);
      color: #047857;
      font-weight: 600;
      padding: 2px 6px;
      border-radius: 4px;
      border-bottom: 2px solid #10b981;
    }
    .hl-signal {
      font-weight: 700;
      color: #d97706;
      text-decoration: underline;
      text-decoration-style: dotted;
    }

    /* Breakdown Tags */
    .breakdown-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
    }
    .badge-signal {
      background: #fef3c7;
      color: #92400e;
      border: 1px solid #fde68a;
    }
    .badge-target {
      background: #e0f2fe;
      color: #0369a1;
      border: 1px solid #bae6fd;
    }
    .badge-clue {
      background: #d1fae5;
      color: #065f46;
      border: 1px solid #a7f3d0;
    }

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      .tabs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .sentence-box {
        font-size: 14px;
        line-height: 1.5;
        padding: 10px;
      }
      .stage {
        height: 260px;
      }
    }
  </style>
</head>
<body>

  
  <div class="header-row">
    <div class="legend">
      <div class="legend-item"><span class="dot dot-target"></span> Target Word</div>
      <div class="legend-item"><span class="dot dot-clue"></span> Context Clue</div>
    </div>
    <button id="playBtn" class="ctrl-btn" aria-label="Toggle Auto-Play">
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  <div class="tabs-grid">
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    <button class="tab-btn" data-idx="3">4. Example</button>
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  <div class="stage">

    
    <div class="card-panel active" id="panel-0">
      <div class="sentence-box">
        A <span class="hl-target">pathogen</span> <span class="hl-signal">is defined as</span> <span class="hl-clue">a biological agent that causes disease</span>.
      </div>
      <div class="breakdown-row">
        <div class="pill-badge badge-signal">Signal: is defined as</div>
        <div class="pill-badge badge-target">Word: pathogen</div>
        <div class="pill-badge badge-clue">Clue: agent causing disease</div>
      </div>
    </div>

    
    <div class="card-panel" id="panel-1">
      <div class="sentence-box">
        The <span class="hl-target">cryosphere</span> <span class="hl-signal">—</span> <span class="hl-clue">Earth's frozen water zones</span> <span class="hl-signal">—</span> regulates global climate.
      </div>
      <div class="breakdown-row">
        <div class="pill-badge badge-signal">Signal: Dashes ( — ... — )</div>
        <div class="pill-badge badge-target">Word: cryosphere</div>
        <div class="pill-badge badge-clue">Clue: frozen water zones</div>
      </div>
    </div>

    
    <div class="card-panel" id="panel-2">
      <div class="sentence-box">
        <span class="hl-signal">Unlike</span> nocturnal species, <span class="hl-target">diurnal</span> animals <span class="hl-clue">hunt during daylight hours</span>.
      </div>
      <div class="breakdown-row">
        <div class="pill-badge badge-signal">Signal: Unlike (Opposite)</div>
        <div class="pill-badge badge-target">Word: diurnal</div>
        <div class="pill-badge badge-clue">Clue: daytime active</div>
      </div>
    </div>

    
    <div class="card-panel" id="panel-3">
      <div class="sentence-box">
        <span class="hl-target">Arthropods</span>, <span class="hl-signal">such as</span> <span class="hl-clue">crabs, spiders, and beetles</span>, possess jointed limbs.
      </div>
      <div class="breakdown-row">
        <div class="pill-badge badge-signal">Signal: such as</div>
        <div class="pill-badge badge-target">Word: Arthropods</div>
        <div class="pill-badge badge-clue">Clue: crabs, spiders, beetles</div>
      </div>
    </div>

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    startAutoPlay();
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</body>
</html>

OGE.8.RI.4

Aligned learning resources

Related diagrams