fix(vitrine): hero comme le login app (river_logo + paper, sans dégradé vert).

layouts/index.html

@@ -1,9 +1,20 @@
 {{ define "main" }}
 <div class="home">
   <section class="hero" aria-labelledby="hero-title">
-    <div class="hero__bg" aria-hidden="true"></div>
+    <div class="hero__visual">
+      <picture>
+        <source media="(max-width: 52rem)" srcset="{{ "images/app/river_logo_mobile.png" | relURL }}">
+        <img
+          class="hero__brand-img"
+          src="{{ "images/app/river_logo_desktop.png" | relURL }}"
+          alt="P'titsPas — Grandir pas à pas, sereinement"
+          width="1440"
+          height="1080"
+          fetchpriority="high"
+          decoding="async">
+      </picture>
+    </div>
     <div class="hero__copy">
-      <p class="hero__brand">P'titsPas</p>
       <h1 id="hero-title" class="hero__title">{{ .Title }}</h1>
       {{ with .Params.hero_tagline }}
       <p class="hero__tagline">{{ . }}</p>
@@ -12,9 +23,6 @@
         <a class="btn btn--pill" href="{{ .Params.cta_primary_url | default "/contact/" | relURL }}">{{ .Params.cta_primary | default "Demander une démonstration" }}</a>
       </p>
     </div>
-    <div class="hero__river" aria-hidden="true">
-      <img src="{{ "images/app/river.png" | relURL }}" alt="" width="1400" height="400" decoding="async">
-    </div>
   </section>
 
   <section class="section experiences" aria-labelledby="exp-title">