Appline — App & SaaS Starter Kit — Référence de design web et prompt

> SELF-CONTAINED, PIXEL-FAITHFUL REPRODUCTION OF THE "APPLINE" NEXT.JS APP/SAAS LANDING TEMPLATE, BUILT AS PLAIN HTML + CSS + VANILLA JS (NO BUILD STEP), INCLUDING HOVER STATES, LIGHT/DARK THEME, AND SCROLL/ENTRANCE ANIMATIONS.

REFERENCE: `https://appline.demo.nextjstemplates.com`

## SUMMARY

APPLINE IS A NEXTJSTEMPLATES.COM PRODUCT: A TAILWIND-BASED NEXT.JS STARTER KIT FOR APP/SOFTWARE/SAAS LANDING PAGES. THE LIVE DEMO EXPOSES A ONE-PAGE MARKETING HOME (HERO, FEATURES, ABOUT/APP-SCREENS, HOW-IT-WORKS, PRICING, APP-SCREENSHOTS CAROUSEL, DOWNLOAD CTA, TESTIMONIALS, FAQ ACCORDION, LATEST BLOG POSTS, CLIENT LOGOS, NEWSLETTER, FOOTER) PLUS A SMALL SATELLITE OF SUPPORTING PAGES: A BLOG INDEX, THREE BLOG POST DETAIL PAGES, A BLOG AUTHOR PAGE, A DOCS PAGE, SIGN-IN AND SIGN-UP AUTH FORM PAGES, AND A CUSTOM 404 ERROR PAGE. ALL PAGES SHARE ONE STICKY/TRANSPARENT-ON-SCROLL HEADER (WITH DESKTOP NAV, MOBILE HAMBURGER MENU, AND A LIGHT/DARK THEME TOGGLE) AND ONE FOOTER (NEWSLETTER SIGNUP + LINK COLUMNS + SOCIAL ICONS).

## STYLE

- FRAMEWORK ORIGIN: TAILWIND CSS (UTILITY-FIRST, TAILWIND V4 `@theme` TOKENS) COMPILED SERVER-SIDE BY NEXT.JS/TURBOPACK. DARK MODE IS CLASS-BASED (`<html class="light">` / `<html class="dark">`) VIA `next-themes`, WITH PER-ELEMENT `dark:` VARIANTS THROUGHOUT MARKUP.
- FONT: `Inter` (GOOGLE FONT, VARIABLE WEIGHT) FOR ALL TEXT. BASE BODY SIZE 16PX / LINE-HEIGHT 24PX.