===== POST 1/5 · Concept =====
Create a high-quality, Retro Grid-style image for an Instagram/LinkedIn carousel about "Backpropagation, Step by Step" (Deep Learning, angle: Concept).

Art direction: y2k journal, graph-paper sticker collage. Modern, polished, social-media ready.
Format: vertical 4:5 aspect ratio (1080×1350 px), with clean negative space near the top for a headline overlay.
Color palette — use ONLY these colors: background #EBE9CC, surface #FFFFFF, primary accent #E94F2E, secondary accent #D8CFF0, tertiary accent #8FA84E, ink/text #1F3A2E.
Subject: a single clear focal concept representing Backpropagation, Step by Step, rendered in the Retro Grid aesthetic.
No text, no letters, no logos, no watermarks, no UI elements. High detail, crisp edges, professional finish.

Aspect ratio 4:5.

===== POST 2/5 · Why It Matters =====
Create a high-quality, Retro Grid-style image for an Instagram/LinkedIn carousel about "Backpropagation, Step by Step" (Deep Learning, angle: Why It Matters).

Art direction: y2k journal, graph-paper sticker collage. Modern, polished, social-media ready.
Format: vertical 4:5 aspect ratio (1080×1350 px), with clean negative space near the top for a headline overlay.
Color palette — use ONLY these colors: background #EBE9CC, surface #FFFFFF, primary accent #E94F2E, secondary accent #D8CFF0, tertiary accent #8FA84E, ink/text #1F3A2E.
Subject: a single clear focal concept representing Backpropagation, Step by Step, rendered in the Retro Grid aesthetic.
No text, no letters, no logos, no watermarks, no UI elements. High detail, crisp edges, professional finish.

Aspect ratio 4:5.

===== POST 3/5 · How It Works =====
Create a high-quality, Retro Grid-style image for an Instagram/LinkedIn carousel about "Backpropagation, Step by Step" (Deep Learning, angle: How It Works).

Art direction: y2k journal, graph-paper sticker collage. Modern, polished, social-media ready.
Format: vertical 4:5 aspect ratio (1080×1350 px), with clean negative space near the top for a headline overlay.
Color palette — use ONLY these colors: background #EBE9CC, surface #FFFFFF, primary accent #E94F2E, secondary accent #D8CFF0, tertiary accent #8FA84E, ink/text #1F3A2E.
Subject: a single clear focal concept representing Backpropagation, Step by Step, rendered in the Retro Grid aesthetic.
No text, no letters, no logos, no watermarks, no UI elements. High detail, crisp edges, professional finish.

Aspect ratio 4:5.

===== POST 4/5 · Code Example =====
Create a high-quality, Retro Grid-style image for an Instagram/LinkedIn carousel about "Backpropagation, Step by Step" (Deep Learning, angle: Code Example).

Art direction: y2k journal, graph-paper sticker collage. Modern, polished, social-media ready.
Format: vertical 4:5 aspect ratio (1080×1350 px), with clean negative space near the top for a headline overlay.
Color palette — use ONLY these colors: background #EBE9CC, surface #FFFFFF, primary accent #E94F2E, secondary accent #D8CFF0, tertiary accent #8FA84E, ink/text #1F3A2E.
Subject: a single clear focal concept representing Backpropagation, Step by Step, rendered in the Retro Grid aesthetic.
No text, no letters, no logos, no watermarks, no UI elements. High detail, crisp edges, professional finish.

Aspect ratio 4:5.

===== POST 5/5 · Common Mistakes =====
Create a high-quality, Retro Grid-style image for an Instagram/LinkedIn carousel about "Backpropagation, Step by Step" (Deep Learning, angle: Common Mistakes).

Art direction: y2k journal, graph-paper sticker collage. Modern, polished, social-media ready.
Format: vertical 4:5 aspect ratio (1080×1350 px), with clean negative space near the top for a headline overlay.
Color palette — use ONLY these colors: background #EBE9CC, surface #FFFFFF, primary accent #E94F2E, secondary accent #D8CFF0, tertiary accent #8FA84E, ink/text #1F3A2E.
Subject: a single clear focal concept representing Backpropagation, Step by Step, rendered in the Retro Grid aesthetic.
No text, no letters, no logos, no watermarks, no UI elements. High detail, crisp edges, professional finish.

Aspect ratio 4:5.

Paste into Midjourney, DALL·E, Ideogram, etc. Updates with the selected theme + palette.