Notebook Tabs.

Editorial 'physical notebook' HTML decks: a cream paper card (#f8f6f1) floating on a dark ground, mint/lavender/pink/sky index tabs on the right fore-edge, binder holes on the left, Bodoni Moda display + DM Sans body, on a fixed 1920x1080 stage that scales to any viewport. Based on zarazhangrui/frontend-slides 'Notebook Tabs' style preset (STYLE_PRESETS.md section 5).