125 lines
9.5 KiB
HTML
125 lines
9.5 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>AI app stack · Layer hierarchy</title>
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<link href="https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Geist:wght@400;500;600&family=Geist+Mono:wght@400;500;600&display=swap" rel="stylesheet">
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<style>
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*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
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:root { --color-paper:#f5f4ed; --color-paper-2:#efeee5; --color-ink:#0b0d0b; --color-muted:#52534e; --color-soft:#65655c; --color-rule:rgba(11,13,11,0.12); --color-accent:#f7591f; --color-link:#1a70c7; --font-sans:'Geist',system-ui,sans-serif; --font-serif:'Instrument Serif',serif; --font-mono:'Geist Mono',ui-monospace,monospace; }
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body { font-family: var(--font-sans); background: var(--color-paper); min-height: 100vh; padding: 3rem 2rem; color: var(--color-ink); }
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.container { max-width: 1200px; margin: 0 auto; }
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.header { margin-bottom: 2.5rem; }
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.header-eyebrow { font-family: var(--font-mono); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 0.75rem; }
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h1 { font-family: var(--font-serif); font-size: clamp(1.75rem, 3vw + 1rem, 2.5rem); font-weight: 400; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 0.5rem; }
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.subtitle { font-size: 1rem; line-height: 1.55; color: var(--color-muted); max-width: 58ch; }
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.diagram-container { background: var(--color-paper-2); border-radius: 8px; border: 1px solid var(--color-rule); padding: 1.5rem; overflow-x: auto; }
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svg { width: 100%; min-width: 900px; display: block; }
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.cards { display: grid; grid-template-columns: 1.1fr 1fr 0.9fr; gap: 1rem; margin-top: 1.5rem; }
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@media (max-width: 820px) { .cards { grid-template-columns: 1fr; } }
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.card { background: #fff; border-radius: 6px; border: 1px solid var(--color-rule); padding: 1.25rem; }
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.card .eyebrow { font-family: var(--font-mono); font-size: 0.5rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 0.5rem; }
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.card-header { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.875rem; padding-bottom: 0.875rem; border-bottom: 1px solid rgba(11,13,11,0.08); }
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.card-dot { width: 7px; height: 7px; border-radius: 50%; }
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.card-dot.ink { background: var(--color-ink); } .card-dot.muted { background: var(--color-muted); } .card-dot.coral { background: var(--color-accent); }
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.card h3 { font-size: 0.875rem; font-weight: 600; }
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.card p, .card ul { color: var(--color-muted); font-size: 0.8125rem; line-height: 1.55; list-style: none; }
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.card li { margin-bottom: 0.3rem; padding-left: 0.875rem; position: relative; }
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.card li::before { content: '—'; position: absolute; left: 0; color: rgba(11,13,11,0.25); font-size: 0.75rem; }
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.footer { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid rgba(11,13,11,0.10); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--color-soft); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<p class="header-eyebrow">Layer stack · Diagram Design</p>
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<h1>AI app stack · Where the work actually happens</h1>
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<p class="subtitle">Five layers between silicon and the user. Most teams over-invest in the model and under-invest in the harness — which is the layer that decides whether the app feels magical or flaky.</p>
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</div>
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<div class="diagram-container">
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<svg viewBox="0 0 1000 500" xmlns="http://www.w3.org/2000/svg">
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<defs>
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<pattern id="dots" width="22" height="22" patternUnits="userSpaceOnUse">
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<circle cx="1" cy="1" r="0.9" fill="rgba(11,13,11,0.10)"/>
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</pattern>
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</defs>
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<rect width="100%" height="100%" fill="#f5f4ed"/>
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<rect width="100%" height="100%" fill="url(#dots)" opacity="0.55"/>
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<!-- Direction column (left margin) -->
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<text x="60" y="68" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.18em">ABSTRACTION</text>
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<line x1="80" y1="80" x2="80" y2="400" stroke="rgba(11,13,11,0.30)" stroke-width="1"/>
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<polygon points="76,80 84,80 80,72" fill="#52534e"/>
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<text x="60" y="416" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.18em">SILICON</text>
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<!-- Stack container hairlines (top + bottom edges) -->
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<line x1="120" y1="80" x2="960" y2="80" stroke="rgba(11,13,11,0.12)" stroke-width="1"/>
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<line x1="120" y1="400" x2="960" y2="400" stroke="rgba(11,13,11,0.12)" stroke-width="1"/>
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<!-- L5 — UI (top layer, near-white fill) -->
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<rect x="120" y="80" width="840" height="64" fill="#ffffff"/>
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<line x1="120" y1="144" x2="960" y2="144" stroke="rgba(11,13,11,0.12)" stroke-width="1"/>
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<text x="140" y="116" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.14em">L5</text>
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<text x="260" y="118" fill="#0b0d0b" font-size="16" font-weight="600" font-family="'Geist', sans-serif">UI surface</text>
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<text x="940" y="118" fill="#52534e" font-size="10" font-family="'Geist Mono', monospace" text-anchor="end" letter-spacing="0.08em">chat, editor, canvas</text>
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<!-- L4 — Agent harness (FOCAL, coral tint + coral stroke) -->
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<rect x="120" y="144" width="840" height="64" fill="rgba(247,89,31,0.08)"/>
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<rect x="120" y="144" width="840" height="64" fill="none" stroke="#f7591f" stroke-width="1"/>
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<text x="140" y="180" fill="#f7591f" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.14em" font-weight="600">L4</text>
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<text x="260" y="182" fill="#0b0d0b" font-size="16" font-weight="600" font-family="'Geist', sans-serif">Agent harness</text>
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<text x="940" y="182" fill="#f7591f" font-size="10" font-family="'Geist Mono', monospace" text-anchor="end" letter-spacing="0.08em">tools, memory, loop</text>
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<!-- L3 — Prompt layer -->
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<rect x="120" y="208" width="840" height="64" fill="#f5f4ed"/>
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<line x1="120" y1="272" x2="960" y2="272" stroke="rgba(11,13,11,0.12)" stroke-width="1"/>
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<text x="140" y="244" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.14em">L3</text>
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<text x="260" y="246" fill="#0b0d0b" font-size="16" font-weight="600" font-family="'Geist', sans-serif">Prompt layer</text>
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<text x="940" y="246" fill="#52534e" font-size="10" font-family="'Geist Mono', monospace" text-anchor="end" letter-spacing="0.08em">system, few-shot, caching</text>
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<!-- L2 — SDK -->
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<rect x="120" y="272" width="840" height="64" fill="#efeee5"/>
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<line x1="120" y1="336" x2="960" y2="336" stroke="rgba(11,13,11,0.12)" stroke-width="1"/>
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<text x="140" y="308" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.14em">L2</text>
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<text x="260" y="310" fill="#0b0d0b" font-size="16" font-weight="600" font-family="'Geist', sans-serif">SDK / client</text>
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<text x="940" y="310" fill="#52534e" font-size="10" font-family="'Geist Mono', monospace" text-anchor="end" letter-spacing="0.08em">auth, retries, streaming</text>
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<!-- L1 — Model -->
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<rect x="120" y="336" width="840" height="64" fill="#efeee5"/>
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<text x="140" y="372" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.14em">L1</text>
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<text x="260" y="374" fill="#0b0d0b" font-size="16" font-weight="600" font-family="'Geist', sans-serif">Model weights</text>
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<text x="940" y="374" fill="#52534e" font-size="10" font-family="'Geist Mono', monospace" text-anchor="end" letter-spacing="0.08em">opus, sonnet, haiku</text>
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<!-- Caption -->
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<text x="120" y="456" fill="#52534e" font-size="8" font-family="'Geist Mono', monospace" letter-spacing="0.18em">FOCAL LAYER</text>
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<text x="240" y="456" fill="#52534e" font-size="8.5" font-family="'Geist', sans-serif" font-style="italic">The harness is where most product differentiation actually lives — tools, memory, and the loop that stitches model calls into useful work.</text>
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</svg>
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</div>
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<div class="cards">
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<div class="card">
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<p class="eyebrow">THE HEADLINE</p>
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<div class="card-header"><span class="card-dot coral"></span><h3>Coral marks the layer that pays rent</h3></div>
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<p>Swapping models is a knob. Rewriting the harness is a product decision. The coral band says: this is the layer where you out-execute the competition, not the one where you chase leaderboards.</p>
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</div>
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<div class="card">
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<div class="card-header"><span class="card-dot ink"></span><h3>Reading the stack</h3></div>
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<ul><li>Abstraction rises up the left column</li><li>L-index on the left, note on the right</li><li>Hairlines between layers, no shadows</li><li>Fill shade shifts from paper-2 to white</li></ul>
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</div>
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<div class="card">
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<div class="card-header"><span class="card-dot muted"></span><h3>Why only five</h3></div>
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<p>Six-plus layers become a legend, not a diagram. Five holds the whole thing on one screen — every band readable without squinting, every note a scan away.</p>
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</div>
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</div>
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<div class="footer">
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<span>ai app stack · layer hierarchy</span>
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<span>example · diagram-design</span>
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</div>
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</div>
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</body>
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</html>
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