Fix homepage Tablet layout: Hero grid, Tools icon, About columns, Newsletter/Footer stacking

- Hero.tsx: structural breakpoint reverted from lg: back to md: — the
  smaller CTA/subtitle/icon sizes added during the Mobile pass fit
  comfortably in the ~283px Tablet column, so the original 3-line-wrap
  problem that justified lg: doesn't recur. Tablet gets the real 5/7
  grid (image beside text) again instead of a stacked mobile layout.
- Tools.tsx: full-size (56px) card icon pushed from md: to lg: — at
  Tablet it dwarfed the still-close-to-floor title/description text.
- About.tsx: text/photo flex ratio swapped at Tablet (text gets the
  bigger share, no overlap) vs. the original ratio + overlap trick from
  lg: up, where it was designed for — Tablet's text column was too
  narrow for its fixed-width statement + quote/bio row otherwise.
- Newsletter.tsx/Footer.tsx: the input+button row and the logo/handle/
  legal-links row both went side-by-side at md:, but their surrounding
  columns didn't leave enough width at 768px — pushed to lg:flex-row.

app/components/About.tsx

@@ -6,9 +6,16 @@ export function About() {
     <section id="ueber-bjoern" className="bg-bg-dark flex flex-col md:flex-row md:items-stretch w-full">
 
       {/* Text content — relative + z-10 so it renders above the overlapping
-          photo at md+. Comes first in DOM at every breakpoint (no reorder
-          here — unlike Hero, there's no conversion CTA at stake). */}
-      <Reveal className="flex flex-col gap-4 justify-center px-[var(--layout-padding-x)] py-8 md:flex-[1_0_0] min-w-0 relative z-10">
+          photo at lg+. Comes first in DOM at every breakpoint (no reorder
+          here — unlike Hero, there's no conversion CTA at stake).
+          md:flex-[1.4_0_0] lg:flex-[1_0_0] — at Tablet the text column got
+          the narrower 1:1.4 share meant for Desktop's overlap layout,
+          leaving it too cramped for the fixed-width statement + quote/bio
+          row. Widened at Tablet (text gets the bigger share, image the
+          smaller one, no overlap yet) and reverted to the original ratio
+          from lg: up, where the overlap trick actually needs the image to
+          have more room. */}
+      <Reveal className="flex flex-col gap-4 justify-center px-[var(--layout-padding-x)] py-8 md:flex-[1.4_0_0] lg:flex-[1_0_0] min-w-0 relative z-10">
 
         {/* Large serif statement — width-constrained as per design */}
         <p
@@ -68,11 +75,13 @@ export function About() {
         </div>
       </Reveal>
 
-      {/* Author photo — overlaps the text column via -ml-48 from md+ only
-          (that overlap trick has nothing to blend into once stacked);
-          plain full-width photo below the text on Mobile. */}
+      {/* Author photo — overlaps the text column via -ml-48 from lg+ only
+          (that overlap trick has nothing to blend into once stacked, and
+          at Tablet it would eat back into the extra width the text column
+          above just gained); plain full-width photo below the text on
+          Mobile, plain side-by-side (no overlap) at Tablet. */}
       <Reveal
-        className="relative overflow-hidden w-full md:flex-[1.4_0_0] md:-ml-48"
+        className="relative overflow-hidden w-full md:flex-[1_0_0] lg:flex-[1.4_0_0] lg:-ml-48"
         style={{ minHeight: "14rem" }}
         delay={0.15}
       >
@@ -80,11 +89,11 @@ export function About() {
           alt="Björn"
           src="/about-author.jpg"
           fill
-          sizes="(min-width: 768px) 58vw, 100vw"
+          sizes="(min-width: 1024px) 58vw, (min-width: 768px) 42vw, 100vw"
           className="object-cover object-center pointer-events-none"
         />
-        {/* Left gradient: wide enough to cover the text-column overlap — md+ only */}
-        <div className="hidden md:block absolute inset-y-0 left-0 w-72 bg-gradient-to-r from-bg-dark to-transparent pointer-events-none" />
+        {/* Left gradient: wide enough to cover the text-column overlap — lg+ only */}
+        <div className="hidden lg:block absolute inset-y-0 left-0 w-72 bg-gradient-to-r from-bg-dark to-transparent pointer-events-none" />
       </Reveal>
 
     </section>