diff --git a/slides/223015b/assets/demos/summary-organizer.html b/slides/223015b/assets/demos/summary-organizer.html
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+<!DOCTYPE html>
+<html lang="de">
+<head>
+<meta charset="UTF-8">
+<title>Was wir in 90 Minuten gelernt haben</title>
+<style>
+  :root {
+    --dark: #1a1a2e;
+    --muted: #6b7280;
+    --soft: #f8fafc;
+    --border: #cbd5e1;
+    --hl: #d63384;
+    --left: #d63384;
+    --right: #0891b2;
+    --bytes: #0891b2;
+  }
+  html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
+  body { padding: 30px 40px; }
+  h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
+  .sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 1.05rem; }
+  .sub strong { color: var(--dark); }
+
+  .recap {
+    display: grid;
+    grid-template-columns: 160px 1fr 200px 1fr 160px;
+    gap: 10px;
+    max-width: 1200px;
+    margin: 0 auto;
+    align-items: center;
+  }
+
+  .station {
+    border: 2px solid var(--border);
+    border-radius: 10px;
+    padding: 18px 12px;
+    background: #fff;
+    text-align: center;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 6px;
+  }
+  .station.bytes { border-color: var(--bytes); background: #0f0f23; color: #fff; }
+  .station-tag {
+    font-size: 0.7rem;
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.12em;
+    color: var(--muted);
+  }
+  .station.bytes .station-tag { color: #94a3b8; }
+  .station-name { font-size: 1.3rem; font-weight: 700; }
+  .station.bytes .station-name { color: #67e8f9; }
+  .station-detail { font-size: 0.78rem; color: var(--muted); line-height: 1.35; }
+  .station.bytes .station-detail { color: #94a3b8; font-family: ui-monospace, monospace; font-size: 0.76rem; line-height: 1.35; }
+
+  .strang {
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+    padding: 0 6px;
+  }
+  .strang-arrow { text-align: center; }
+  .strang-arrow svg { width: 100%; height: 18px; }
+  .strang-title {
+    font-size: 0.92rem;
+    font-weight: 700;
+    text-align: center;
+    line-height: 1.3;
+  }
+  .strang.left  .strang-title { color: var(--left); }
+  .strang.right .strang-title { color: var(--right); }
+  .strang-list {
+    display: flex;
+    flex-direction: column;
+    gap: 3px;
+    list-style: none;
+    margin: 0;
+    padding: 0;
+    background: var(--soft);
+    border: 1px solid var(--border);
+    border-radius: 8px;
+    padding: 8px 12px;
+  }
+  .strang-list li {
+    font-size: 0.82rem;
+    color: var(--dark);
+    padding-left: 12px;
+    position: relative;
+    line-height: 1.4;
+  }
+  .strang-list li::before {
+    content: "·";
+    position: absolute;
+    left: 0;
+    top: 0;
+    font-weight: 700;
+  }
+  .strang.left .strang-list li::before  { color: var(--left); }
+  .strang.right .strang-list li::before { color: var(--right); }
+
+  .verdict {
+    margin-top: 22px;
+    max-width: 1200px;
+    margin-left: auto;
+    margin-right: auto;
+    text-align: center;
+    border: 2px solid var(--hl);
+    border-radius: 12px;
+    padding: 14px 22px;
+  }
+  .verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
+  .verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
+  .verdict-a strong { color: var(--hl); }
+</style>
+</head>
+<body>
+  <h1>Was wir in 90 Minuten gelernt haben</h1>
+  <div class="sub">Beide Wege gehen durch <strong>dieselbe Mitte</strong>. Du kennst jetzt alle Stationen.</div>
+
+  <div class="recap">
+
+    <div class="station">
+      <div class="station-tag">Quelle</div>
+      <div class="station-name">Welt</div>
+      <div class="station-detail">Schallwelle<br>Lichtwelle<br>kontinuierlich · analog</div>
+    </div>
+
+    <div class="strang left">
+      <div class="strang-arrow">
+        <svg viewBox="0 0 200 18" preserveAspectRatio="none">
+          <line x1="6" y1="9" x2="180" y2="9" stroke="#d63384" stroke-width="2"/>
+          <path d="M174,3 L188,9 L174,15" stroke="#d63384" stroke-width="2" fill="none"/>
+        </svg>
+      </div>
+      <div class="strang-title">Welt → Byte</div>
+      <ul class="strang-list">
+        <li>Sampling-Rate</li>
+        <li>Bittiefe · Quantisierung</li>
+        <li>Datenrate-Formel</li>
+        <li>Nyquist · 2·f<sub>max</sub></li>
+        <li>Aliasing &amp; Moiré</li>
+        <li>44,1 kHz = 2·20 kHz + Marge</li>
+      </ul>
+    </div>
+
+    <div class="station bytes">
+      <div class="station-tag">Mitte</div>
+      <div class="station-name">Datei</div>
+      <div class="station-detail">
+        Byte-Strom<br>
+        89 50 4E 47<br>
+        nichts als Zahlen
+      </div>
+    </div>
+
+    <div class="strang right">
+      <div class="strang-arrow">
+        <svg viewBox="0 0 200 18" preserveAspectRatio="none">
+          <line x1="6" y1="9" x2="180" y2="9" stroke="#0891b2" stroke-width="2"/>
+          <path d="M174,3 L188,9 L174,15" stroke="#0891b2" stroke-width="2" fill="none"/>
+        </svg>
+      </div>
+      <div class="strang-title">Byte → Bedeutung</div>
+      <ul class="strang-list">
+        <li>Bit · Byte · Hex</li>
+        <li>8 Bit = 256 Zustände</li>
+        <li>ASCII · UTF-8</li>
+        <li>Magic Number</li>
+        <li>KB vs KiB</li>
+        <li>Hex im Alltag (CSS, MAC)</li>
+      </ul>
+    </div>
+
+    <div class="station">
+      <div class="station-tag">Ziel</div>
+      <div class="station-name">Mensch</div>
+      <div class="station-detail">Text · Bild · Klang<br>Bedeutung<br>verstehen</div>
+    </div>
+
+  </div>
+
+  <div class="verdict">
+    <div class="verdict-q">Eine Datei ist kein Mysterium. Es ist eine <strong>Reihe von Zahlen</strong> mit zwei Geschichten dran.</div>
+    <div class="verdict-a">Eine Geschichte erzählt, <strong>woher</strong> die Zahlen kommen. Die andere, <strong>was</strong> sie bedeuten. Beide kennst du jetzt.</div>
+  </div>
+</body>
+</html>
diff --git a/slides/223015b/assets/demos/summary-organizer.png b/slides/223015b/assets/demos/summary-organizer.png
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