223015b phase 3: drei-dateien demo (kap1 folie 3 'drei dateien — dasselbe innenleben'). drei spalten: foto/sprachnachricht/PDF mit jeweils thumbnail (svg sunset/waveform/document) + hex-strip mit erstem byte + magic-number in farbe markiert (89 50 4E 47 für PNG, 49 44 33 für ID3, 25 50 44 46 für %PDF) + ascii-übersetzung. verdict 'drei verschiedene dinge — eine sprache: jede datei beginnt mit ihrer visitenkarte (magic number)'. stilreferenz wie kap03-eroeffner (3-spalten-cards mit farbigen rahmen), keine emojis
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<title>Drei Dateien — dasselbe Innenleben</title>
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<style>
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:root {
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--dark: #1a1a2e;
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--muted: #6b7280;
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--soft: #f8fafc;
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--border: #cbd5e1;
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--hl: #d63384;
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--foto: #2563eb;
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--audio: #ea580c;
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--pdf: #7c3aed;
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}
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html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
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body { padding: 32px 40px; }
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h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
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.sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 1.05rem; }
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.sub strong { color: var(--dark); }
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.files {
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display: grid;
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grid-template-columns: 1fr 1fr 1fr;
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gap: 22px;
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max-width: 1200px;
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margin: 0 auto;
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}
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.file {
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border: 2px solid;
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border-radius: 12px;
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padding: 16px 18px;
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background: #fff;
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display: flex;
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flex-direction: column;
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gap: 12px;
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}
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.file.foto { border-color: var(--foto); }
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.file.audio { border-color: var(--audio); }
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.file.pdf { border-color: var(--pdf); }
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.file-head { display: flex; justify-content: space-between; align-items: baseline; }
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.file-name { font-size: 1.2rem; font-weight: 700; }
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.file.foto .file-name { color: var(--foto); }
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.file.audio .file-name { color: var(--audio); }
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.file.pdf .file-name { color: var(--pdf); }
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.file-ext { font-family: ui-monospace, monospace; font-size: 0.78rem; color: var(--muted); }
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.preview {
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border-radius: 8px;
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border: 1px solid var(--border);
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overflow: hidden;
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display: block;
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height: 130px;
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background: var(--soft);
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}
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.hex-strip {
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background: #0f0f23;
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border-radius: 6px;
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padding: 8px 10px;
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font-family: ui-monospace, monospace;
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font-size: 0.78rem;
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line-height: 1.6;
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color: #cbd5e1;
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overflow: hidden;
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}
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.hex-strip .magic { color: #fff; font-weight: 700; padding: 0 2px; border-radius: 2px; }
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.hex-strip.foto-magic .magic { background: var(--foto); }
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.hex-strip.audio-magic .magic { background: var(--audio); }
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.hex-strip.pdf-magic .magic { background: var(--pdf); }
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.hex-label {
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font-size: 0.68rem;
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text-transform: uppercase;
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letter-spacing: 0.1em;
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color: var(--muted);
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font-weight: 700;
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margin-bottom: 2px;
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}
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.magic-caption {
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font-size: 0.78rem;
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color: var(--muted);
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text-align: center;
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font-family: ui-monospace, monospace;
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}
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.magic-caption .magic-word {
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color: var(--dark);
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font-weight: 700;
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}
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.verdict {
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margin-top: 26px;
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max-width: 1200px;
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margin-left: auto;
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margin-right: auto;
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text-align: center;
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border: 2px solid var(--hl);
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border-radius: 12px;
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padding: 14px 22px;
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}
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.verdict-q { font-size: 1.15rem; font-weight: 700; color: var(--hl); }
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.verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
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.verdict-a strong { color: var(--hl); }
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</style>
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</head>
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<body>
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<h1>Drei Dateien — dasselbe Innenleben</h1>
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<div class="sub">Außen <strong>völlig verschieden</strong>. Innen reden alle dieselbe Sprache: <strong>Byte für Byte</strong>.</div>
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<div class="files">
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<div class="file foto">
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<div class="file-head">
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<span class="file-name">Foto</span>
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<span class="file-ext">.png</span>
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</div>
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<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="xMidYMid slice">
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<defs>
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<linearGradient id="sky-f" x1="0" y1="0" x2="0" y2="1">
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<stop offset="0%" stop-color="#fde68a"/>
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<stop offset="60%" stop-color="#fb923c"/>
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<stop offset="100%" stop-color="#7c3aed"/>
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</linearGradient>
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</defs>
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<rect x="0" y="0" width="220" height="130" fill="url(#sky-f)"/>
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<circle cx="160" cy="50" r="18" fill="#fef3c7" opacity="0.95"/>
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<path d="M0,95 L40,80 L80,90 L120,72 L160,86 L220,75 L220,130 L0,130 Z" fill="#1e1b4b"/>
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<path d="M0,110 L60,100 L120,108 L180,98 L220,105 L220,130 L0,130 Z" fill="#0f172a" opacity="0.7"/>
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</svg>
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<div>
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<div class="hex-label">Erste Bytes der Datei</div>
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<div class="hex-strip foto-magic">
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<span class="magic">89 50 4E 47</span> 0D 0A 1A 0A 00 00 00 0D 49 48 44 52
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</div>
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</div>
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<div class="magic-caption"><span class="magic-word">50 4E 47</span> = <span class="magic-word">"PNG"</span></div>
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</div>
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<div class="file audio">
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<div class="file-head">
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<span class="file-name">Sprachnachricht</span>
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<span class="file-ext">.mp3</span>
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</div>
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<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="none">
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<rect x="0" y="0" width="220" height="130" fill="#0f0f23"/>
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<line x1="0" y1="65" x2="220" y2="65" stroke="#374151" stroke-width="1"/>
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<path d="M0,65 L8,65 L12,55 L16,75 L20,40 L24,90 L28,30 L32,95 L36,35 L40,90
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L48,45 L56,82 L64,50 L72,78 L80,52 L88,75 L96,55 L104,72
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L116,58 L128,72 L140,60 L152,70 L168,62 L184,68 L200,64 L220,65
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L220,130 L0,130 Z" fill="#fb923c" stroke="#ea580c" stroke-width="1"/>
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</svg>
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<div>
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<div class="hex-label">Erste Bytes der Datei</div>
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<div class="hex-strip audio-magic">
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<span class="magic">49 44 33</span> 03 00 00 00 00 03 76 54 49 54 32 00 00
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</div>
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</div>
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<div class="magic-caption"><span class="magic-word">49 44 33</span> = <span class="magic-word">"ID3"</span></div>
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</div>
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<div class="file pdf">
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<div class="file-head">
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<span class="file-name">PDF-Dokument</span>
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<span class="file-ext">.pdf</span>
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</div>
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<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="xMidYMid meet">
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<rect x="0" y="0" width="220" height="130" fill="#f8fafc"/>
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<rect x="50" y="14" width="120" height="102" rx="4" fill="#fff" stroke="#cbd5e1" stroke-width="1"/>
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<rect x="58" y="24" width="80" height="4" rx="1" fill="#7c3aed"/>
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<rect x="58" y="34" width="104" height="2" fill="#cbd5e1"/>
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<rect x="58" y="40" width="98" height="2" fill="#cbd5e1"/>
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<rect x="58" y="46" width="92" height="2" fill="#cbd5e1"/>
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<rect x="58" y="52" width="100" height="2" fill="#cbd5e1"/>
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<rect x="58" y="62" width="80" height="2" fill="#cbd5e1"/>
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<rect x="58" y="68" width="96" height="2" fill="#cbd5e1"/>
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<rect x="58" y="74" width="88" height="2" fill="#cbd5e1"/>
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<rect x="58" y="84" width="40" height="3" rx="1" fill="#7c3aed" opacity="0.7"/>
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<rect x="58" y="92" width="92" height="2" fill="#cbd5e1"/>
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<rect x="58" y="98" width="86" height="2" fill="#cbd5e1"/>
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<rect x="58" y="104" width="78" height="2" fill="#cbd5e1"/>
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</svg>
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<div>
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<div class="hex-label">Erste Bytes der Datei</div>
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<div class="hex-strip pdf-magic">
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<span class="magic">25 50 44 46</span> 2D 31 2E 37 0A 25 E2 E3 CF D3 0A 0A
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</div>
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</div>
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<div class="magic-caption"><span class="magic-word">25 50 44 46</span> = <span class="magic-word">"%PDF"</span></div>
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</div>
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</div>
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<div class="verdict">
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<div class="verdict-q">Drei verschiedene Dinge — eine Sprache.</div>
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<div class="verdict-a">Jede Datei beginnt mit ihrer <strong>Visitenkarte</strong> (Magic Number) und besteht ab da aus nichts als Byte. Foto, Audio, PDF — alle dieselben Bauteile, nur anders zusammengesetzt.</div>
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</div>
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</body>
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</html>
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