<!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: #ffffff;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
      padding: 10px 8px;
    }
    .header {
      text-align: center;
      margin-bottom: 6px;
    }
    .title {
      font-size: 15px;
      font-weight: 700;
      color: #1e2945;
    }
    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      width: 100%;
      max-width: 520px;
    }
    .bone-col {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 10px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
    .bone-title {
      font-size: 13px;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 4px;
      margin-bottom: 4px;
    }
    .svg-container {
      width: 100%;
      max-width: 170px;
      height: 140px;
    }
    .badge-group {
      display: flex;
      flex-direction: column;
      gap: 4px;
      width: 100%;
      margin-top: 6px;
    }
    .badge {
      font-size: 11px;
      font-weight: 600;
      padding: 3px 6px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }
    .badge-heavy {
      background: #fee2e2;
      color: #991b1b;
    }
    .badge-light {
      background: #e0f2fe;
      color: #0369a1;
    }
    .badge-strong {
      background: #dcfce7;
      color: #166534;
    }
    .interactive-bar {
      margin-top: 6px;
      display: flex;
      justify-content: center;
    }
    .btn {
      background: #2563eb;
      color: #ffffff;
      border: none;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.1);
      transition: background 0.2s;
    }
    .btn:active {
      background: #1d4ed8;
    }
    .strut-line {
      transition: stroke 0.3s, stroke-width 0.3s;
    }
    .stress-arrow {
      opacity: 0;
      transition: opacity 0.3s, transform 0.3s;
      transform: translateY(-4px);
    }
    .stress-active .stress-arrow {
      opacity: 1;
      transform: translateY(0);
    }
    .stress-active .strut-line {
      stroke: #2563eb;
      stroke-width: 3.5;
    }
  </style>
</head>
<body>

  <div class="header">
    <div class="title">Bone Architecture: Mammal vs. Bird</div>
  </div>

  <div class="comparison-grid" id="grid">
    
    <div class="bone-col">
      <div class="bone-title">🚶 Mammal</div>
      <svg class="svg-container" viewBox="0 0 160 140">
        
        <g class="stress-arrow">
          <path d="M 80,4 L 80,18" stroke="#dc2626" stroke-width="2.5" stroke-linecap="round"/>
          <path d="M 76,14 L 80,19 L 84,14" fill="none" stroke="#dc2626" stroke-width="2.5" stroke-linecap="round"/>
        </g>

        
        <g transform="translate(10, 22)">
          
          <rect x="25" y="15" width="90" height="75" rx="10" fill="#e2d8c3" stroke="#b0a080" stroke-width="2"/>
          <ellipse cx="70" cy="15" rx="45" ry="12" fill="#ede5d3" stroke="#b0a080" stroke-width="2"/>
          
          
          <ellipse cx="70" cy="15" rx="30" ry="8" fill="#d48b48" opacity="0.8"/>
          
          
          <ellipse cx="70" cy="15" rx="20" ry="5.5" fill="#b91c1c" opacity="0.85"/>
          <rect x="50" y="15" width="40" height="75" fill="#fecaca" opacity="0.65"/>
          <rect x="55" y="15" width="30" height="75" fill="#b91c1c" opacity="0.75"/>

          
          <line x1="115" y1="45" x2="135" y2="45" stroke="#64748b" stroke-width="1.5" stroke-dasharray="2,2"/>
          <text x="138" y="48" font-size="8" fill="#475569" font-weight="bold">Solid</text>
        </g>
      </svg>
      <div class="badge-group">
        <div class="badge badge-heavy">⚖️ High Mass</div>
      </div>
    </div>

    
    <div class="bone-col">
      <div class="bone-title">🦅 Bird</div>
      <svg class="svg-container" viewBox="0 0 160 140">
        
        <g class="stress-arrow">
          <path d="M 80,4 L 80,18" stroke="#2563eb" stroke-width="2.5" stroke-linecap="round"/>
          <path d="M 76,14 L 80,19 L 84,14" fill="none" stroke="#2563eb" stroke-width="2.5" stroke-linecap="round"/>
        </g>

        
        <g transform="translate(10, 22)">
          
          <rect x="25" y="15" width="90" height="75" rx="10" fill="#f8fafc" stroke="#64748b" stroke-width="2"/>
          <ellipse cx="70" cy="15" rx="45" ry="12" fill="#ffffff" stroke="#64748b" stroke-width="2"/>
          
          
          <ellipse cx="70" cy="15" rx="38" ry="10" fill="#e0f2fe" stroke="#38bdf8" stroke-width="1.5"/>

          
          
          <line class="strut-line" x1="35" y1="25" x2="105" y2="75" stroke="#94a3b8" stroke-width="2.5" stroke-linecap="round"/>
          <line class="strut-line" x1="105" y1="25" x2="35" y2="75" stroke="#94a3b8" stroke-width="2.5" stroke-linecap="round"/>
          <line class="strut-line" x1="35" y1="50" x2="105" y2="50" stroke="#94a3b8" stroke-width="2" stroke-linecap="round"/>
          <line class="strut-line" x1="70" y1="15" x2="70" y2="88" stroke="#94a3b8" stroke-width="2" stroke-linecap="round"/>
          
          <circle cx="70" cy="50" r="3.5" fill="#3b82f6"/>

          
          <line x1="115" y1="45" x2="135" y2="45" stroke="#64748b" stroke-width="1.5" stroke-dasharray="2,2"/>
          <text x="138" y="48" font-size="8" fill="#475569" font-weight="bold">Truss</text>
        </g>
      </svg>
      <div class="badge-group">
        <div class="badge badge-light">⚖️ Low Mass</div>
        <div class="badge badge-strong">🛡️ High Strength</div>
      </div>
    </div>
  </div>

  <div class="interactive-bar">
    <button class="btn" id="stressBtn" onclick="toggleStress()">
      <span>⚡ Test Load Support</span>
    </button>
  </div>

  <script>
    let active = false;
    function toggleStress() {
      active = !active;
      const grid = document.getElementById('grid');
      const btn = document.getElementById('stressBtn');
      if (active) {
        grid.classList.add('stress-active');
        btn.style.background = '#059669';
        btn.innerHTML = '<span>✓ Force Distributed</span>';
      } else {
        grid.classList.remove('stress-active');
        btn.style.background = '#2563eb';
        btn.innerHTML = '<span>⚡ Test Load Support</span>';
      }
    }
  </script>
</body>
</html>

Structural Adaptations: Physical Traits for Survival

<!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>How Blubber Traps Heat</title>
  <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: #ffffff;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
      user-select: none;
    }
    .header {
      width: 100%;
      max-width: 620px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }
    .title {
      font-size: 17px;
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    .controls {
      display: flex;
      gap: 6px;
    }
    .btn {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      padding: 5px 12px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }
    .btn.active {
      background: #22b7ff;
      border-color: #22b7ff;
      color: #ffffff;
    }
    .diagram-svg {
      width: 100%;
      max-width: 620px;
      height: auto;
      aspect-ratio: 600 / 340;
      display: block;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid #e6e6e6;
    }
    .heat-arrow {
      fill: none;
      stroke: #ef4444;
      stroke-width: 4;
      stroke-linecap: round;
      stroke-linejoin: round;
      stroke-dasharray: 10 6;
      animation: heatFlow 1.2s linear infinite;
    }
    .heat-glow {
      fill: none;
      stroke: #fca5a5;
      stroke-width: 10;
      stroke-linecap: round;
      opacity: 0.4;
    }
    @keyframes heatFlow {
      to { stroke-dashoffset: -32; }
    }
    @keyframes pulseGlow {
      0%, 100% { transform: scale(1); opacity: 0.9; }
      50% { transform: scale(1.08); opacity: 1; }
    }
    .heart-icon {
      transform-origin: 90px 170px;
      animation: pulseGlow 1.8s ease-in-out infinite;
    }
    .status-pill {
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .status-trapped {
      background: #dcfce7;
      color: #166534;
      border: 1px solid #bbf7d0;
    }
    .status-lost {
      background: #fee2e2;
      color: #991b1b;
      border: 1px solid #fecaca;
    }
  </style>
</head>
<body>

  <div class="header">
    <span class="title">How Blubber Traps Heat</span>
    <div class="controls">
      <button id="btnWith" class="btn active" onclick="setMode(true)">With Blubber</button>
      <button id="btnWithout" class="btn" onclick="setMode(false)">No Blubber</button>
    </div>
  </div>

  <svg class="diagram-svg" viewBox="0 0 600 340">
    <defs>
      
      <linearGradient id="coreGrad" x1="0%" y1="0%" x2="100%" y2="0%">
        <stop offset="0%" stop-color="#ffedd5" />
        <stop offset="100%" stop-color="#fed7aa" />
      </linearGradient>

      <linearGradient id="coldGrad" x1="0%" y1="0%" x2="100%" y2="0%">
        <stop offset="0%" stop-color="#bae6fd" />
        <stop offset="100%" stop-color="#e0f2fe" />
      </linearGradient>

      <linearGradient id="blubberGrad" x1="0%" y1="0%" x2="100%" y2="0%">
        <stop offset="0%" stop-color="#fef08a" />
        <stop offset="100%" stop-color="#fde047" />
      </linearGradient>

      
      <pattern id="collagen" width="24" height="24" patternUnits="userSpaceOnUse">
        <path d="M 0 12 L 24 12 M 12 0 L 12 24 M 0 0 L 24 24 M 24 0 L 0 24" fill="none" stroke="#ca8a04" stroke-width="0.75" opacity="0.35" />
        <circle cx="12" cy="12" r="2" fill="#eab308" opacity="0.4" />
      </pattern>

      
      <marker id="heatHead" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto">
        <path d="M 0 1 L 8 5 L 0 9 z" fill="#ef4444" />
      </marker>
      <marker id="blueHead" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto">
        <path d="M 0 1 L 8 5 L 0 9 z" fill="#0284c7" />
      </marker>
    </defs>

    
    <rect id="oceanBg" x="180" y="0" width="420" height="340" fill="url(#coldGrad)" />

    
    <g id="oceanDecor">
      <path d="M 460 60 Q 480 50 500 60 T 540 60" fill="none" stroke="#38bdf8" stroke-width="2" opacity="0.6" />
      <path d="M 440 280 Q 460 270 480 280 T 520 280" fill="none" stroke="#38bdf8" stroke-width="2" opacity="0.6" />
      <text x="500" y="145" font-size="28" text-anchor="middle" opacity="0.75">❄️</text>
      <text x="500" y="195" font-size="15" font-weight="700" fill="#0369a1" text-anchor="middle">Arctic Ocean</text>
      <text x="500" y="215" font-size="13" font-weight="600" fill="#0284c7" text-anchor="middle">0°C (32°F)</text>
    </g>

    
    <g id="blubberLayer">
      <rect x="180" y="0" width="220" height="340" fill="url(#blubberGrad)" />
      <rect x="180" y="0" width="220" height="340" fill="url(#collagen)" />
      
      <rect x="390" y="0" width="10" height="340" fill="#475569" />
      <line x1="400" y1="0" x2="400" y2="340" stroke="#334155" stroke-width="2" stroke-dasharray="3 3" />
      
      <rect x="225" y="20" width="130" height="28" rx="14" fill="#ffffff" opacity="0.9" />
      <text x="290" y="39" font-size="13" font-weight="700" fill="#854d0e" text-anchor="middle">Thick Blubber</text>
    </g>

    
    <rect x="0" y="0" width="180" height="340" fill="url(#coreGrad)" />
    <line x1="180" y1="0" x2="180" y2="340" stroke="#fb923c" stroke-width="2" />

    
    <g class="heart-icon">
      <circle cx="90" cy="160" r="32" fill="#fee2e2" />
      <text x="90" y="172" font-size="34" text-anchor="middle">❤️</text>
    </g>
    <text x="90" y="70" font-size="15" font-weight="700" fill="#9a3412" text-anchor="middle">Body Core</text>
    <text id="coreTempText" x="90" y="90" font-size="13" font-weight="600" fill="#c2410c" text-anchor="middle">37°C (99°F)</text>

    
    <g id="heatPathsWithBlubber">
      
      <path class="heat-glow" d="M 120 115 C 240 115, 290 125, 290 145 C 290 165, 240 175, 130 175" />
      <path class="heat-arrow" marker-end="url(#heatHead)" d="M 120 115 C 240 115, 290 125, 290 145 C 290 165, 240 175, 130 175" />

      
      <path class="heat-glow" d="M 120 225 C 250 225, 300 235, 300 255 C 300 275, 250 285, 130 285" />
      <path class="heat-arrow" marker-end="url(#heatHead)" d="M 120 225 C 250 225, 300 235, 300 255 C 300 275, 250 285, 130 285" />

      
      <g transform="translate(230, 185)">
        <rect width="120" height="26" rx="13" fill="#15803d" />
        <text x="60" y="17" font-size="11" font-weight="700" fill="#ffffff" text-anchor="middle">Heat Trapped ↩</text>
      </g>
    </g>

    <g id="heatPathsNoBlubber" style="display: none;">
      
      <path class="heat-glow" d="M 120 130 L 480 130" />
      <path class="heat-arrow" marker-end="url(#heatHead)" d="M 120 130 L 480 130" />

      <path class="heat-glow" d="M 120 180 L 480 180" />
      <path class="heat-arrow" marker-end="url(#heatHead)" d="M 120 180 L 480 180" />

      <path class="heat-glow" d="M 120 230 L 480 230" />
      <path class="heat-arrow" marker-end="url(#heatHead)" d="M 120 230 L 480 230" />

      
      <g transform="translate(260, 275)">
        <rect width="130" height="26" rx="13" fill="#b91c1c" />
        <text x="65" y="17" font-size="11" font-weight="700" fill="#ffffff" text-anchor="middle">Rapid Heat Loss ➔</text>
      </g>
    </g>
  </svg>

  <div id="statusIndicator" style="margin-top: 8px;">
    <span class="status-pill status-trapped">✓ Blubber acts as insulation barrier</span>
  </div>

  <script>
    function setMode(hasBlubber) {
      const btnWith = document.getElementById('btnWith');
      const btnWithout = document.getElementById('btnWithout');
      const blubberLayer = document.getElementById('blubberLayer');
      const heatPathsWith = document.getElementById('heatPathsWithBlubber');
      const heatPathsNo = document.getElementById('heatPathsNoBlubber');
      const statusIndicator = document.getElementById('statusIndicator');
      const coreTempText = document.getElementById('coreTempText');

      if (hasBlubber) {
        btnWith.classList.add('active');
        btnWithout.classList.remove('active');
        blubberLayer.style.display = 'block';
        heatPathsWith.style.display = 'block';
        heatPathsNo.style.display = 'none';
        coreTempText.textContent = '37°C (99°F)';
        coreTempText.setAttribute('fill', '#c2410c');
        statusIndicator.innerHTML = '<span class="status-pill status-trapped">✓ Blubber reflects heat back to body core</span>';
      } else {
        btnWithout.classList.add('active');
        btnWith.classList.remove('active');
        blubberLayer.style.display = 'none';
        heatPathsWith.style.display = 'none';
        heatPathsNo.style.display = 'block';
        coreTempText.textContent = 'Rapidly Cooling!';
        coreTempText.setAttribute('fill', '#b91c1c');
        statusIndicator.innerHTML = '<span class="status-pill status-lost">⚠ Heat escapes directly into cold ocean</span>';
      }
    }
  </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, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      min-height: 100%;
    }
    .header {
      font-size: 18px;
      font-weight: 800;
      color: #1e2945;
      text-align: center;
      margin-bottom: 12px;
      letter-spacing: -0.01em;
    }
    .deck-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: 100%;
      max-width: 620px;
    }
    @media (max-width: 480px) {
      .deck-grid {
        grid-template-columns: 1fr;
        gap: 8px;
      }
    }
    .adapt-card {
      background: #ffffff;
      border: 1px solid #e6e6e6;
      border-radius: 12px;
      padding: 10px;
      display: flex;
      flex-direction: column;
      align-items: center;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
      cursor: pointer;
      user-select: none;
      transition: box-shadow 0.2s ease, border-color 0.2s ease;
    }
    .adapt-card.active {
      border-color: #facc15;
      box-shadow: 0 0 0 2px #facc15, 0 4px 12px rgba(250, 204, 21, 0.2);
    }
    .card-svg-wrap {
      width: 100%;
      height: 120px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .card-svg-wrap svg {
      width: 100%;
      height: 100%;
      max-height: 120px;
    }
    .label-badge {
      margin-top: 6px;
      font-size: 13px;
      font-weight: 700;
      color: #1e2945;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      padding: 4px 8px;
      border-radius: 6px;
      text-align: center;
      line-height: 1.2;
    }
    .adapt-card.active .label-badge {
      background: #fef9c3;
      border-color: #fde047;
      color: #854d0e;
    }
    .highlight-pulse {
      animation: pulseGlow 2s infinite ease-in-out;
      transform-origin: center;
    }
    @keyframes pulseGlow {
      0%, 100% { opacity: 0.92; filter: drop-shadow(0 0 2px rgba(250, 204, 21, 0.4)); }
      50% { opacity: 1; filter: drop-shadow(0 0 6px rgba(250, 204, 21, 0.9)); }
    }
  </style>
</head>
<body>

  <div class="header">Body Tools for Survival</div>

  <div class="deck-grid">
    
    <div class="adapt-card active" onclick="selectCard(this)">
      <div class="card-svg-wrap">
        <svg viewBox="0 0 160 120">
          
          <rect width="160" height="120" rx="8" fill="#f0f9ff"/>
          
          
          <path d="M 40,110 C 40,80 50,55 70,45 C 80,40 100,42 105,48" fill="none" stroke="#64748b" stroke-width="8" stroke-linecap="round"/>
          <path d="M 40,110 C 40,80 50,55 70,45 C 80,40 100,42 105,48" fill="none" stroke="#ffffff" stroke-width="6" stroke-linecap="round"/>
          
          <circle cx="85" cy="46" r="3" fill="#1e2945"/>
          
          <path d="M 95,46 L 148,54 L 146,58 L 95,50 Z" fill="#94a3b8"/>
          
          
          <path class="highlight-pulse" d="M 95,51 Q 130,55 145,56 C 145,78 125,98 85,92 C 72,90 62,75 60,65 Z" fill="#fde047" stroke="#eab308" stroke-width="2.5"/>
          
          
          <path d="M 120,70 Q 130,68 138,72" stroke="#38bdf8" stroke-width="2" fill="none" stroke-linecap="round"/>
          <circle cx="142" cy="71" r="1.5" fill="#38bdf8"/>
        </svg>
      </div>
      <div class="label-badge">Expandable Pouch</div>
    </div>

    
    <div class="adapt-card" onclick="selectCard(this)">
      <div class="card-svg-wrap">
        <svg viewBox="0 0 160 120">
          
          <rect width="160" height="120" rx="8" fill="#f8fafc"/>
          
          
          <path d="M 25,60 C 25,48 40,48 50,50 L 110,50 C 120,48 135,48 135,60 C 135,72 120,72 110,70 L 50,70 C 40,72 25,72 25,60 Z" fill="#e2e8f0" stroke="#94a3b8" stroke-width="2.5"/>
          
          
          <rect class="highlight-pulse" x="48" y="52" width="64" height="16" rx="4" fill="#fde047" stroke="#eab308" stroke-width="1.5"/>
          
          
          
          <path d="M 52,52 L 62,68 M 62,52 L 52,68 M 74,52 L 84,68 M 84,52 L 74,68 M 96,52 L 106,68 M 106,52 L 96,68" stroke="#ca8a04" stroke-width="1.5" stroke-linecap="round"/>
          
          
          <circle cx="68" cy="60" r="2" fill="#ffffff"/>
          <circle cx="90" cy="60" r="2" fill="#ffffff"/>
          <circle cx="40" cy="60" r="3" fill="#cbd5e1"/>
          <circle cx="120" cy="60" r="3" fill="#cbd5e1"/>
        </svg>
      </div>
      <div class="label-badge">Hollow Wing Bone</div>
    </div>

    
    <div class="adapt-card" onclick="selectCard(this)">
      <div class="card-svg-wrap">
        <svg viewBox="0 0 160 120">
          
          <rect width="160" height="120" rx="8" fill="#e0f2fe"/>
          <path d="M 0,0 L 70,0 L 55,24 L 0,28 Z" fill="#ffffff"/>
          
          
          
          <ellipse cx="80" cy="65" rx="52" ry="32" fill="#f87171" stroke="#dc2626" stroke-width="1.5"/>
          
          
          <path class="highlight-pulse" d="M 28,65 C 28,47 51,33 80,33 C 109,33 132,47 132,65 C 132,83 109,97 80,97 C 51,97 28,83 28,65 Z" fill="none" stroke="#fde047" stroke-width="14"/>
          
          
          <ellipse cx="80" cy="65" rx="59" ry="39" fill="none" stroke="#334155" stroke-width="3"/>
          
          
          <text x="135" y="24" font-size="14" fill="#38bdf8" text-anchor="middle">❄</text>
        </svg>
      </div>
      <div class="label-badge">Thick Blubber</div>
    </div>
  </div>

  <script>
    function selectCard(card) {
      document.querySelectorAll('.adapt-card').forEach(c => c.classList.remove('active'));
      card.classList.add('active');
    }
  </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;
      user-select: none;
      -webkit-user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: transparent;
      padding: 10px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 6px;
    }

    .title {
      font-size: 15px;
      font-weight: 700;
      color: #1e2945;
      letter-spacing: -0.2px;
    }

    .toggle-group {
      display: flex;
      background: #e2e8f0;
      border-radius: 20px;
      padding: 2px;
      gap: 2px;
    }

    .toggle-btn {
      border: none;
      background: transparent;
      padding: 4px 10px;
      font-size: 12px;
      font-weight: 600;
      color: #64748b;
      border-radius: 16px;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .toggle-btn.active {
      background: #ffffff;
      color: #1e2945;
      box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 8px;
      width: 100%;
    }

    .beak-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: 10px;
      padding: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      cursor: pointer;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      position: relative;
    }

    .beak-card:hover {
      border-color: #22b7ff;
    }

    .beak-card.selected {
      border-color: #22b7ff;
      box-shadow: 0 0 0 2px rgba(34, 183, 255, 0.25);
    }

    .card-header {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 4px;
    }

    .beak-name {
      font-size: 13px;
      font-weight: 700;
      color: #1e2945;
    }

    .beak-type {
      font-size: 10px;
      font-weight: 600;
      color: #22b7ff;
      text-transform: uppercase;
      letter-spacing: 0.4px;
    }

    .visual-stage {
      width: 100%;
      height: 76px;
      background: #f8fafc;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
      margin-bottom: 6px;
    }

    .svg-scene {
      width: 100%;
      height: 100%;
    }

    .info-box {
      width: 100%;
      background: #f1f5f9;
      border-radius: 6px;
      padding: 4px 6px;
      min-height: 38px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      text-align: center;
    }

    .info-label {
      font-size: 9px;
      font-weight: 700;
      text-transform: uppercase;
      color: #64748b;
      letter-spacing: 0.3px;
    }

    .info-val {
      font-size: 11px;
      font-weight: 600;
      color: #1e2945;
      line-height: 1.2;
    }

    .active-advantage .info-box {
      background: #e0f2fe;
    }

    .active-advantage .info-label {
      color: #0284c7;
    }

    .active-advantage .info-val {
      color: #0369a1;
      font-weight: 700;
    }

    /* Force Arrows & Overlay */
    .force-arrow {
      stroke: #22b7ff;
      stroke-width: 2;
      stroke-linecap: round;
      fill: none;
      transition: opacity 0.3s ease;
    }

    .mech-layer {
      opacity: 0;
      transition: opacity 0.25s ease;
    }

    .food-layer {
      opacity: 1;
      transition: opacity 0.25s ease;
    }

    .show-advantage .mech-layer {
      opacity: 1;
    }

    .show-advantage .food-layer {
      opacity: 0.15;
    }

    @media (max-width: 380px) {
      .title { font-size: 13px; }
      .toggle-btn { font-size: 11px; padding: 3px 8px; }
      .beak-name { font-size: 12px; }
      .visual-stage { height: 68px; }
      .info-val { font-size: 10px; }
    }
  </style>
</head>
<body>

  <header>
    <div class="title">Beak Shape vs. Food Source</div>
    <div class="toggle-group">
      <button class="toggle-btn active" id="btnFood" onclick="setMode('food')">Food Target</button>
      <button class="toggle-btn" id="btnMech" onclick="setMode('mech')">Mechanical Edge</button>
    </div>
  </header>

  <div class="grid" id="cardGrid">

    
    <div class="beak-card selected" onclick="selectCard(0)">
      <div class="card-header">
        <span class="beak-name">Cracker</span>
        <span class="beak-type">Finch</span>
      </div>
      <div class="visual-stage">
        <svg class="svg-scene" viewBox="0 0 160 80">
          
          <circle cx="34" cy="40" r="22" fill="#cbd5e1" />
          <circle cx="30" cy="34" r="3" fill="#1e2945" />
          <polygon points="46,28 76,40 46,52" fill="#f59e0b" stroke="#d97706" stroke-width="1.5" />
          
          
          <g class="food-layer">
            <ellipse cx="118" cy="40" rx="14" ry="11" fill="#78350f" />
            <path d="M 112 32 Q 118 36 124 32" stroke="#9a3412" stroke-width="1.5" fill="none" />
            
            <path d="M 118 34 L 116 40 L 120 44 L 117 48" stroke="#fef08a" stroke-width="1.5" fill="none" />
          </g>

          
          <g class="mech-layer">
            
            <path d="M 76 22 L 76 34" stroke="#0284c7" stroke-width="2.5" marker-end="url(#arrow)" />
            <path d="M 76 58 L 76 46" stroke="#0284c7" stroke-width="2.5" />
            <polyline points="72,30 76,34 80,30" stroke="#0284c7" stroke-width="2.5" fill="none" stroke-linecap="round" />
            <polyline points="72,50 76,46 80,50" stroke="#0284c7" stroke-width="2.5" fill="none" stroke-linecap="round" />
            <text x="96" y="44" font-size="10" font-weight="bold" fill="#0284c7">MAX PSI</text>
          </g>
        </svg>
      </div>
      <div class="info-box">
        <div class="info-label" id="lbl-0">Food Source</div>
        <div class="info-val" id="val-0">Hard Shell Seeds</div>
      </div>
    </div>

    
    <div class="beak-card" onclick="selectCard(1)">
      <div class="card-header">
        <span class="beak-name">Spear</span>
        <span class="beak-type">Heron</span>
      </div>
      <div class="visual-stage">
        <svg class="svg-scene" viewBox="0 0 160 80">
          
          <circle cx="26" cy="40" r="18" fill="#e2e8f0" />
          <circle cx="24" cy="35" r="2.5" fill="#1e2945" />
          <polygon points="38,34 94,40 38,46" fill="#facc15" stroke="#ca8a04" stroke-width="1.5" />
          
          
          <g class="food-layer">
            
            <path d="M 112 40 Q 126 31 142 40 Q 126 49 112 40 Z" fill="#38bdf8" stroke="#0284c7" stroke-width="1.2" />
            <polygon points="142,40 152,33 152,47" fill="#0284c7" />
            <circle cx="120" cy="38" r="1.5" fill="#0f172a" />
          </g>

          
          <g class="mech-layer">
            <line x1="90" y1="40" x2="134" y2="40" stroke="#0284c7" stroke-width="2.5" stroke-dasharray="3,2" />
            <polyline points="126,35 134,40 126,45" stroke="#0284c7" stroke-width="2.5" fill="none" stroke-linecap="round" />
            <text x="100" y="24" font-size="9" font-weight="bold" fill="#0284c7">LOW DRAG</text>
          </g>
        </svg>
      </div>
      <div class="info-box">
        <div class="info-label" id="lbl-1">Food Source</div>
        <div class="info-val" id="val-1">Fast Swimming Fish</div>
      </div>
    </div>

    
    <div class="beak-card" onclick="selectCard(2)">
      <div class="card-header">
        <span class="beak-name">Probe</span>
        <span class="beak-type">Hummingbird</span>
      </div>
      <div class="visual-stage">
        <svg class="svg-scene" viewBox="0 0 160 80">
          
          <circle cx="28" cy="40" r="16" fill="#10b981" />
          <circle cx="26" cy="36" r="2.5" fill="#064e3b" />
          
          <path d="M 38 39 Q 65 39 96 44" stroke="#1f2937" stroke-width="2.2" fill="none" stroke-linecap="round" />

          
          <g class="food-layer">
            
            <path d="M 126 18 Q 98 42 126 62 L 138 62 Q 112 42 138 18 Z" fill="#f43f5e" opacity="0.9" />
            <circle cx="106" cy="42" r="3" fill="#fbbf24" />
          </g>

          
          <g class="mech-layer">
            <line x1="42" y1="58" x2="98" y2="58" stroke="#0284c7" stroke-width="2" />
            <polyline points="46,55 42,58 46,61" stroke="#0284c7" stroke-width="2" fill="none" />
            <polyline points="94,55 98,58 94,61" stroke="#0284c7" stroke-width="2" fill="none" />
            <text x="50" y="71" font-size="9" font-weight="bold" fill="#0284c7">DEEP REACH</text>
          </g>
        </svg>
      </div>
      <div class="info-box">
        <div class="info-label" id="lbl-2">Food Source</div>
        <div class="info-val" id="val-2">Deep Flower Nectar</div>
      </div>
    </div>

    
    <div class="beak-card" onclick="selectCard(3)">
      <div class="card-header">
        <span class="beak-name">Strainer</span>
        <span class="beak-type">Duck</span>
      </div>
      <div class="visual-stage">
        <svg class="svg-scene" viewBox="0 0 160 80">
          
          <circle cx="28" cy="40" r="18" fill="#059669" />
          <circle cx="25" cy="35" r="2.5" fill="#022c22" />
          
          <path d="M 40 33 L 78 35 Q 84 40 78 45 L 40 47 Z" fill="#fbbf24" stroke="#d97706" stroke-width="1.2" />
          
          <line x1="48" y1="39" x2="48" y2="43" stroke="#b45309" stroke-width="1.2" />
          <line x1="54" y1="39" x2="54" y2="43" stroke="#b45309" stroke-width="1.2" />
          <line x1="60" y1="39" x2="60" y2="43" stroke="#b45309" stroke-width="1.2" />
          <line x1="66" y1="39" x2="66" y2="43" stroke="#b45309" stroke-width="1.2" />
          <line x1="72" y1="39" x2="72" y2="43" stroke="#b45309" stroke-width="1.2" />

          
          <g class="food-layer">
            <path d="M 116 26 Q 124 38 116 54" stroke="#16a34a" stroke-width="3" fill="none" stroke-linecap="round" />
            <path d="M 126 22 Q 132 40 124 58" stroke="#22c55e" stroke-width="2.5" fill="none" stroke-linecap="round" />
            <path d="M 136 28 Q 142 42 136 52" stroke="#15803d" stroke-width="3" fill="none" stroke-linecap="round" />
            
            <path d="M 98 48 C 104 46, 110 50, 116 48" stroke="#38bdf8" stroke-width="1.5" fill="none" />
          </g>

          
          <g class="mech-layer">
            
            <path d="M 52 24 L 52 32" stroke="#0284c7" stroke-width="2" />
            <polyline points="49,29 52,32 55,29" stroke="#0284c7" stroke-width="2" fill="none" />
            <path d="M 68 24 L 68 32" stroke="#0284c7" stroke-width="2" />
            <polyline points="65,29 68,32 71,29" stroke="#0284c7" stroke-width="2" fill="none" />
            <text x="86" y="32" font-size="9" font-weight="bold" fill="#0284c7">WATER SIEVE</text>
          </g>
        </svg>
      </div>
      <div class="info-box">
        <div class="info-label" id="lbl-3">Food Source</div>
        <div class="info-val" id="val-3">Pond Water Weeds</div>
      </div>
    </div>

  </div>

  <script>
    const data = [
      { food: "Hard Shell Seeds", mech: "Short Lever = High Force" },
      { food: "Fast Swimming Fish", mech: "Needle Tip = Zero Drag" },
      { food: "Deep Flower Nectar", mech: "Narrow Tube = Capillary Reach" },
      { food: "Pond Water Weeds", mech: "Lamellae = Filters Liquid" }
    ];

    let currentMode = 'food';

    function setMode(mode) {
      currentMode = mode;
      const btnFood = document.getElementById('btnFood');
      const btnMech = document.getElementById('btnMech');
      const grid = document.getElementById('cardGrid');

      if (mode === 'food') {
        btnFood.classList.add('active');
        btnMech.classList.remove('active');
        grid.classList.remove('show-advantage', 'active-advantage');
        data.forEach((item, i) => {
          document.getElementById(`lbl-${i}`).textContent = "Food Source";
          document.getElementById(`val-${i}`).textContent = item.food;
        });
      } else {
        btnMech.classList.add('active');
        btnFood.classList.remove('active');
        grid.classList.add('show-advantage', 'active-advantage');
        data.forEach((item, i) => {
          document.getElementById(`lbl-${i}`).textContent = "Mechanical Advantage";
          document.getElementById(`val-${i}`).textContent = item.mech;
        });
      }
    }

    function selectCard(index) {
      const cards = document.querySelectorAll('.beak-card');
      cards.forEach((c, i) => {
        if (i === index) {
          c.classList.add('selected');
        } else {
          c.classList.remove('selected');
        }
      });
    }
  </script>
</body>
</html>

Natural Environmental Changes Across Seasons

Extreme Natural Events and Wildlife

Human Impact: Urbanisation and Development

Deforestation and Habitat Loss

Water Pollution and Aquatic Ecosystems

Plastic Waste and Marine Life

Air Pollution and Its Impact on Nature

How Rising Temperatures Affect Living Things

Endangered Species in Britain and Globally

Protecting Habitats: Nature Reserves and Wildlife Corridors

Positive Human Actions: School Gardens and Rewilding

science

Environmental Change and Dangers to Living Things

El sistema digestivo: transformación de alimentos en nutrientes

El sistema respiratorio: entrada de oxígeno y salida de dióxido de carbono

Sistemas de respiración en los animales

El sistema circulatorio: el corazón y la red de transporte de la sangre

El sistema excretor: los riñones y la eliminación de toxinas

Integración vital: cómo cooperan digestión, respiración y circulación

El corazón como bomba mecánica: analogías del sistema circulatorio

Los pulmones como fuelles: analogías mecánicas de la respiración

Los riñones como filtros: comparando órganos con purificadores

El estómago como procesador: trituración y digestión mecánica y química

El ojo humano y la cámara fotográfica: capturando imágenes del entorno

Sistemas del cuerpo humano y analogías tecnológicas

Behavioral Adaptations: Instincts and Learned Actions

Camouflage and Mimicry in the Wild

Natural Environmental Changes: Fires, Floods, and Drought

Human-Induced Habitat Changes: Deforestation and Pollution

Evaluating Solutions That Reduce Human Impacts on Natural Systems

Organism Adaptations and Environmental Change

Máquinas simples: La palanca y el plano inclinado

Máquinas simples: Poleas, ruedas y ejes

Palancas de primer género en el cuerpo: el movimiento de la cabeza y el cuello

Palancas de segundo género en el cuerpo: levantarse sobre la punta de los pies

Palancas de tercer género en el cuerpo: el antebrazo y la fuerza del bíceps

La mandíbula como palanca: fuerza de mordida en humanos, leones y roedores

Poleas anatómicas: la rótula y tendones que redirigen la fuerza muscular

La cuña en la naturaleza: incisivos, colmillos, picos de aves y garras

Planos inclinados biológicos: alas aerodinámicas, aletas y uñas para trepar

Biomímesis: cómo la ingeniería copia las máquinas del cuerpo animal

Máquinas simples en el cuerpo humano y en los animales

El respeto por los animales del entorno

Proteger los espacios donde viven otros seres

Cuidado y tenencia responsable de animales de compañía

Los animales silvestres no son mascotas

Cuidar los árboles nativos y la vegetación local

Importancia de los polinizadores en el ecosistema

Crear jardines escolares para atraer vida silvestre

Respeto y cuidado de los seres vivos del entorno

La basura y su impacto en los seres vivos

Especies amenazadas y en peligro de extinción en Colombia

El papel de los parques naturales y reservas

Cuidar los microorganismos y la salud del suelo

Evitar el uso de químicos que dañan a los insectos benéficos

Compromiso personal para proteger la biodiversidad

Monitorear aves y mariposas del entorno escolar

Amenazas a la biodiversidad y acciones de conservación

¿Qué es un ecosistema?: componentes bióticos y abióticos en interacción

Tipos de ecosistemas: Terrestres y acuáticos

El ecosistema de páramo: frailejones y fábricas de agua en los Andes

El bosque húmedo tropical: la gran biodiversidad del Amazonas y del Chocó

El ecosistema de manglar: barrera natural y cuna de vida en el Caribe y Pacífico

El bosque seco tropical y desiertos como La Guajira y La Tatacoa

Las sabanas y los Llanos Orientales: inundaciones, fauna y pastizales

Ecosistemas acuáticos continentales: ríos, lagunas y ciénagas

Ecosistemas marinos: arrecifes de coral y praderas de pastos marinos

Comparación de nuestro ecosistema local con otros ecosistemas del país

Amenazas a los ecosistemas: deforestación, contaminación y cambio climático

Ecosistemas: factores bióticos, abióticos y biomas de Colombia

Cuidar los juguetes y materiales del salón

El costo ecológico de fabricar objetos nuevos

Reparar y dar segunda vida a nuestros objetos

Uso eficiente del papel y útiles escolares

Mantenimiento de herramientas e instrumentos de medición

Materiales biodegradables y no biodegradables

Separación adecuada de residuos en la fuente

Reciclaje de plásticos, vidrio y metales

Disposición segura de pilas y residuos electrónicos

Reutilización creativa de envases y cartón

El consumo responsable en la vida cotidiana

Cuidado y uso responsable de materiales y objetos

¿Qué es una adaptación?: tipos morfológicas, fisiológicas y de comportamiento

Adaptaciones físicas y camuflaje

Adaptaciones de las plantas a diferentes climas

Camuflaje por coloración críptica: fundiéndose con el fondo y las sombras

Mimetismo: parecerse a especies venenosas o peligrosas para evitar el ataque

Mimetismo de forma: insectos hoja, insectos palo y caballitos de mar

Camuflaje en depredadores: el acecho silencioso del jaguar, el búho y el caimán

OGS.5.LS.5

Aligned learning resources

Related diagrams