Fix section alternation and increase accent background intensity

- Swap alternating pattern so hero flows into white section
- New order: hero → white → shaded → white → shaded → white → shaded
- Increase bg-alt color intensity from #f7f3fa to #f0eaf5
- Add German BioImaging (Josh Moore) to team, remove Dr. prefix

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: etzm

_includes/challenge.html

@@ -1,4 +1,4 @@
-<section class="section section-alt" id="challenge">
+<section class="section" id="challenge">
     <div class="container">
         <h2 class="section-title">{{ site.data.challenge.section_title }}</h2>
         <div class="challenge-grid">

_includes/features.html

@@ -1,4 +1,4 @@
-<section class="section section-alt" id="features">
+<section class="section" id="features">
     <div class="container">
         <p class="section-eyebrow">{{ site.data.features.section_eyebrow }}</p>
         <h2 class="section-title">{{ site.data.features.section_title }}</h2>

_includes/integrations.html

@@ -1,4 +1,4 @@
-<section class="section section-alt" id="integrations">
+<section class="section" id="integrations">
     <div class="container">
         <p class="section-eyebrow">{{ site.data.integrations.section_eyebrow }}</p>
         <h2 class="section-title">{{ site.data.integrations.section_title }}</h2>

_includes/iscc.html

@@ -1,4 +1,4 @@
-<section class="section" id="iscc">
+<section class="section section-alt" id="iscc">
     <div class="container">
         <p class="section-eyebrow">{{ site.data.iscc.standard.iso }}</p>
         <h2 class="section-title">{{ site.data.iscc.standard.name }}</h2>

_includes/team.html

@@ -1,4 +1,4 @@
-<section class="section" id="team">
+<section class="section section-alt" id="team">
     <div class="container">
         <p class="section-eyebrow">{{ site.data.team.section_eyebrow }}</p>
         <h2 class="section-title">{{ site.data.team.section_title }}</h2>

_includes/tools.html

@@ -1,4 +1,4 @@
-<section class="section" id="tools">
+<section class="section section-alt" id="tools">
     <div class="container">
         <p class="section-eyebrow">{{ site.data.tools.section_eyebrow }}</p>
         <h2 class="section-title">{{ site.data.tools.section_title }}</h2>

assets/css/style.css

@@ -20,7 +20,7 @@
 /* ── Variables ─────────────────────────────────────────────────── */
 :root {
   --color-bg: #ffffff;
-  --color-bg-alt: #f7f3fa;
+  --color-bg-alt: #f0eaf5;
   --color-text: #1a1a2e;
   --color-text-light: #6b6b80;
   --color-accent: #7B2D8E;