About + HelpFAQSection: full dark-mode support

Every section of the About page now renders correctly in dark mode.
The hero stays dark in both modes (its identity is anchored on the
dark navy backdrop), and the four light sections (Three steps, Two
ways to get paid, Frequently asked, Pick the side) each gain a
dark-mode counterpart so the page reads consistently inside the
app's theme.

Section background mapping

  Section                  Light bg     Dark bg
  -----------------------  -----------  -----------
  Hero                     #0a0c14      #0a0c14   (unchanged)
  Three steps              #faf8f4      #11151c
  Two ways to get paid     white        #0e1218
  Frequently asked         #f5f1eb      #11151c
  Pick the side            white        #0e1218

Card surfaces (StepCard, RailCard, GuideCard, FAQ accordion item)
map bg-white -> dark:bg-[#1a1f29] and border-gray-200 ->
dark:border-white/10. Hover shadows pick up a darker variant
(dark:hover:shadow-[0_8px_24px_rgba(0,0,0,0.4)]) on cards that have
a hover-lift effect.

Text-color mapping (applied throughout)

  text-gray-900 -> dark:text-white               (headings)
  text-gray-800 -> dark:text-gray-100            (inline strongs)
  text-gray-700 -> dark:text-gray-300            (bullet body)
  text-gray-600 -> dark:text-gray-300            (body prose)
  text-amber-600 / 700 -> dark:text-amber-400    (trade-off label
                                                   + icon)
  border-gray-100 -> dark:border-white/10        (separators)

No-Custody comparison banner

The light gradient card (white -> primary/5) converts to a glass
tile in dark mode (white/0.04 -> primary/0.08) with primary/30
border. The inner Comparison grid's separator border picks up
dark:border-white/10. ComparisonItem's light theme path now also
sets dark:text-gray-300 on its body copy so it reads on the dark
glass tile.

HelpFAQSection

Both the 'reference' card-row accordion (used by the About page)
and the 'cards' masonry variant gain dark-mode card surfaces and
text-color mapping. The category tab pills get a dark-mode
inactive state. The active pill (bg-primary) is already correct in
both modes.

src/components/HelpFAQSection.tsx

@@ -136,7 +136,7 @@ export function HelpFAQSection({
                     'rounded-full px-4 py-2 text-sm font-semibold transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary/50',
                     active
                       ? 'bg-primary text-primary-foreground shadow-sm'
-                      : 'bg-white text-gray-700 border border-gray-200 hover:border-gray-300 hover:bg-gray-50',
+                      : 'bg-white dark:bg-[#1a1f29] text-gray-700 dark:text-gray-300 border border-gray-200 dark:border-white/10 hover:border-gray-300 dark:hover:border-white/20 hover:bg-gray-50 dark:hover:bg-[#222937]',
                   )}
                   aria-pressed={active}
                 >
@@ -220,17 +220,17 @@ function FAQAccordionItem({
     return (
       <AccordionItem
         value={item.id}
-        className="group relative border-b-0 rounded-lg bg-white border border-gray-200 shadow-sm mb-3 overflow-hidden transition-colors hover:border-primary/40 data-[state=open]:border-primary/50 data-[state=open]:shadow-md"
+        className="group relative border-b-0 rounded-lg bg-white dark:bg-[#1a1f29] border border-gray-200 dark:border-white/10 shadow-sm mb-3 overflow-hidden transition-colors hover:border-primary/40 data-[state=open]:border-primary/50 data-[state=open]:shadow-md"
       >
         {/* Left accent rule: orange when open, transparent otherwise */}
         <span
           aria-hidden
           className="absolute left-0 top-0 bottom-0 w-1 bg-transparent group-hover:bg-primary/30 group-data-[state=open]:bg-primary transition-colors"
         />
-        <AccordionTrigger className="text-left text-base sm:text-lg font-bold tracking-tight leading-snug hover:no-underline gap-3 px-5 sm:px-6 py-5">
+        <AccordionTrigger className="text-left text-base sm:text-lg font-bold tracking-tight leading-snug hover:no-underline gap-3 px-5 sm:px-6 py-5 text-gray-900 dark:text-white">
           {item.question}
         </AccordionTrigger>
-        <AccordionContent className="text-[15px] leading-relaxed text-gray-600 space-y-3 px-5 sm:px-6 pb-5 -mt-1">
+        <AccordionContent className="text-[15px] leading-relaxed text-gray-600 dark:text-gray-300 space-y-3 px-5 sm:px-6 pb-5 -mt-1">
           {item.answer.map((paragraph, i) => (
             <p key={i}>{renderInlineMarkup(paragraph)}</p>
           ))}
@@ -260,13 +260,13 @@ function FAQAccordionItem({
  */
 function FAQCard({ item }: { item: FAQItem }) {
   return (
-    <div className="mb-6 break-inside-avoid rounded-2xl border border-gray-200 bg-white shadow-sm">
+    <div className="mb-6 break-inside-avoid rounded-2xl border border-gray-200 dark:border-white/10 bg-white dark:bg-[#1a1f29] shadow-sm">
       <Accordion type="single" collapsible>
         <AccordionItem value={item.id} className="border-b-0">
-          <AccordionTrigger className="text-left font-display font-semibold text-gray-900 text-lg leading-snug hover:no-underline px-5 py-4 gap-3">
+          <AccordionTrigger className="text-left font-display font-semibold text-gray-900 dark:text-white text-lg leading-snug hover:no-underline px-5 py-4 gap-3">
             {item.question}
           </AccordionTrigger>
-          <AccordionContent className="text-[15px] leading-relaxed text-gray-600 space-y-3 px-5 pb-5">
+          <AccordionContent className="text-[15px] leading-relaxed text-gray-600 dark:text-gray-300 space-y-3 px-5 pb-5">
             {item.answer.map((paragraph, i) => (
               <p key={i}>{renderInlineMarkup(paragraph)}</p>
             ))}

src/pages/AboutPage.tsx

@@ -246,10 +246,10 @@ export function AboutPage() {
         </div>
       </section>
 
-      {/* ── 2. How it works, in three steps (light cream) ──────────────── */}
+      {/* ── 2. How it works, in three steps (light cream / dark slate) ──── */}
       <section
         id="how-it-works"
-        className="relative bg-[#faf8f4] py-20 md:py-28 overflow-hidden"
+        className="relative bg-[#faf8f4] dark:bg-[#11151c] py-20 md:py-28 overflow-hidden"
       >
         <div className="relative max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
           <SectionHeader
@@ -284,8 +284,8 @@ export function AboutPage() {
         </div>
       </section>
 
-      {/* ── 3. Two ways to get paid (white) ─────────────────────────────── */}
-      <section className="relative bg-white py-20 md:py-28 overflow-hidden">
+      {/* ── 3. Two ways to get paid (white / dark slate) ────────────────── */}
+      <section className="relative bg-white dark:bg-[#0e1218] py-20 md:py-28 overflow-hidden">
         <div className="relative max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
           <SectionHeader
             eyebrow="Bitcoin · One QR, two options"
@@ -353,11 +353,11 @@ export function AboutPage() {
                 </p>
               }
               tradeoffBullets={[
-                <strong className="text-gray-800">Few wallets support it.</strong>,
-                <strong className="text-gray-800">Receiving is slow.</strong>,
-                <strong className="text-gray-800">No push notifications.</strong>,
-                <strong className="text-gray-800">Wallets are still buggy.</strong>,
-                <strong className="text-gray-800">
+                <strong className="text-gray-800 dark:text-gray-100">Few wallets support it.</strong>,
+                <strong className="text-gray-800 dark:text-gray-100">Receiving is slow.</strong>,
+                <strong className="text-gray-800 dark:text-gray-100">No push notifications.</strong>,
+                <strong className="text-gray-800 dark:text-gray-100">Wallets are still buggy.</strong>,
+                <strong className="text-gray-800 dark:text-gray-100">
                   Donation counts aren't public.
                 </strong>,
               ]}
@@ -369,16 +369,16 @@ export function AboutPage() {
               question, "how is this actually different from existing
               crowdfunding sites?", by name-checking the failure modes
               of centralized and even other Bitcoin-based options. */}
-          <div className="mt-10 max-w-5xl mx-auto rounded-2xl border border-primary/20 bg-gradient-to-br from-white to-primary/5 p-6 sm:p-8">
+          <div className="mt-10 max-w-5xl mx-auto rounded-2xl border border-primary/20 dark:border-primary/30 bg-gradient-to-br from-white to-primary/5 dark:from-white/[0.04] dark:to-primary/[0.08] p-6 sm:p-8">
             <div className="flex flex-col sm:flex-row items-start gap-5 mb-6">
-              <div className="size-12 shrink-0 rounded-xl bg-primary/10 border border-primary/30 flex items-center justify-center">
+              <div className="size-12 shrink-0 rounded-xl bg-primary/10 dark:bg-primary/20 border border-primary/30 flex items-center justify-center">
                 <ShieldCheck className="size-6 text-primary" />
               </div>
               <div>
-                <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 mb-1.5">
+                <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 dark:text-white mb-1.5">
                   No custody. No middleman.
                 </h3>
-                <p className="text-gray-600 leading-relaxed text-[15px]">
+                <p className="text-gray-600 dark:text-gray-300 leading-relaxed text-[15px]">
                   {appName} never holds funds. Donations move
                   wallet-to-wallet on Bitcoin. There's no server standing
                   between donor and activist on either option. If {appName}{' '}
@@ -388,7 +388,7 @@ export function AboutPage() {
             </div>
 
             {/* Comparison grid */}
-            <ul className="grid sm:grid-cols-3 gap-5 sm:gap-6 pt-5 border-t border-primary/10">
+            <ul className="grid sm:grid-cols-3 gap-5 sm:gap-6 pt-5 border-t border-primary/10 dark:border-white/10">
               <ComparisonItem
                 heading="Unlike GoFundMe"
                 body="No platform can freeze your donations, demand refunds, or terminate your campaign over policy disagreements."
@@ -406,10 +406,10 @@ export function AboutPage() {
         </div>
       </section>
 
-      {/* ── 4. Need help? FAQ (cream, integrated as three chapters) ───── */}
+      {/* ── 4. Need help? FAQ (cream / dark slate, integrated as three chapters) ───── */}
       <section
         id="faq"
-        className="bg-[#f5f1eb] py-20 md:py-28 scroll-mt-16"
+        className="bg-[#f5f1eb] dark:bg-[#11151c] py-20 md:py-28 scroll-mt-16"
       >
         <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
           <SectionHeader
@@ -432,8 +432,8 @@ export function AboutPage() {
         </div>
       </section>
 
-      {/* ── 5. Pick the side you're on (white) ──────────────────────────── */}
-      <section className="bg-white py-20 md:py-28">
+      {/* ── 5. Pick the side you're on (white / dark slate) ─────────────── */}
+      <section className="bg-white dark:bg-[#0e1218] py-20 md:py-28">
         <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
           <SectionHeader
             eyebrow="Guides"
@@ -554,10 +554,10 @@ function FAQChapter({ number, title, description, categoryId }: FAQChapterProps)
           {number}
         </span>
         <div>
-          <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 leading-snug">
+          <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 dark:text-white leading-snug">
             {title}
           </h3>
-          <p className="text-sm sm:text-base text-gray-600 mt-1 leading-relaxed">
+          <p className="text-sm sm:text-base text-gray-600 dark:text-gray-400 mt-1 leading-relaxed">
             {description}
           </p>
         </div>
@@ -592,7 +592,9 @@ function ComparisonItem({ heading, body, theme = 'light' }: ComparisonItemProps)
       <p
         className={cn(
           'text-sm leading-relaxed',
-          theme === 'dark' ? 'text-gray-300' : 'text-gray-600',
+          theme === 'dark'
+            ? 'text-gray-300'
+            : 'text-gray-600 dark:text-gray-300',
         )}
       >
         {body}
@@ -624,7 +626,9 @@ function SectionHeader({
       <h2
         className={cn(
           'text-2xl sm:text-3xl font-bold tracking-tight mb-4',
-          theme === 'dark' ? 'text-white' : 'text-gray-900',
+          theme === 'dark'
+            ? 'text-white'
+            : 'text-gray-900 dark:text-white',
         )}
       >
         {title}
@@ -633,7 +637,9 @@ function SectionHeader({
         <p
           className={cn(
             'text-base sm:text-lg leading-relaxed',
-            theme === 'dark' ? 'text-gray-400' : 'text-gray-600',
+            theme === 'dark'
+              ? 'text-gray-400'
+              : 'text-gray-600 dark:text-gray-400',
           )}
         >
           {lede}
@@ -653,7 +659,7 @@ interface StepCardProps {
 
 function StepCard({ number, image, imageAlt, title, body }: StepCardProps) {
   return (
-    <div className="relative bg-white rounded-2xl overflow-hidden border border-gray-200 shadow-sm transition-all duration-300 motion-safe:hover:-translate-y-1 hover:shadow-md">
+    <div className="relative bg-white dark:bg-[#1a1f29] rounded-2xl overflow-hidden border border-gray-200 dark:border-white/10 shadow-sm transition-all duration-300 motion-safe:hover:-translate-y-1 hover:shadow-md dark:hover:shadow-[0_8px_24px_rgba(0,0,0,0.4)]">
       <div className="aspect-[4/3] bg-[#0a0c14] relative overflow-hidden">
         <img
           src={image}
@@ -669,10 +675,10 @@ function StepCard({ number, image, imageAlt, title, body }: StepCardProps) {
         </div>
       </div>
       <div className="p-6 sm:p-7">
-        <h3 className="text-xl font-bold tracking-tight text-gray-900 mb-3 leading-snug">
+        <h3 className="text-xl font-bold tracking-tight text-gray-900 dark:text-white mb-3 leading-snug">
           {title}
         </h3>
-        <p className="text-gray-600 leading-relaxed text-[15px]">{body}</p>
+        <p className="text-gray-600 dark:text-gray-300 leading-relaxed text-[15px]">{body}</p>
       </div>
     </div>
   );
@@ -716,7 +722,7 @@ function RailCard({
     accent === 'orange' ? 'text-emerald-600' : 'text-indigo-600';
 
   return (
-    <div className="rounded-2xl border border-gray-200 bg-white shadow-sm overflow-hidden flex flex-col">
+    <div className="rounded-2xl border border-gray-200 dark:border-white/10 bg-white dark:bg-[#1a1f29] shadow-sm overflow-hidden flex flex-col">
       {/* Gradient header strip */}
       <div className={cn('bg-gradient-to-r px-6 py-5 text-white', headerGradient)}>
         <div className="flex items-center gap-2 mb-1">
@@ -731,10 +737,10 @@ function RailCard({
       {/* Body */}
       <div className="p-6 space-y-5 flex-1 flex flex-col">
         <div>
-          <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 mb-2 leading-snug">
+          <h3 className="text-xl sm:text-2xl font-bold tracking-tight text-gray-900 dark:text-white mb-2 leading-snug">
             {title}
           </h3>
-          <p className="text-gray-600 leading-relaxed text-[15px]">
+          <p className="text-gray-600 dark:text-gray-300 leading-relaxed text-[15px]">
             {description}
           </p>
         </div>
@@ -743,24 +749,24 @@ function RailCard({
           {bullets.map((b, i) => (
             <li key={i} className="flex items-start gap-2.5">
               <CircleCheck className={cn('size-4 shrink-0 mt-0.5', checkColor)} />
-              <span className="text-gray-700 text-sm leading-snug">{b}</span>
+              <span className="text-gray-700 dark:text-gray-300 text-sm leading-snug">{b}</span>
             </li>
           ))}
         </ul>
 
         {/* Trade-off block */}
-        <div className="mt-auto pt-5 border-t border-gray-100">
+        <div className="mt-auto pt-5 border-t border-gray-100 dark:border-white/10">
           <div className="flex items-center gap-2 mb-2">
             {tradeoffEmphasized ? (
-              <AlertTriangle className="size-4 text-amber-600" />
+              <AlertTriangle className="size-4 text-amber-600 dark:text-amber-400" />
             ) : (
               <span aria-hidden className="size-2 rounded-full bg-amber-500" />
             )}
-            <span className="text-xs font-bold uppercase tracking-widest text-amber-700">
+            <span className="text-xs font-bold uppercase tracking-widest text-amber-700 dark:text-amber-400">
               {tradeoffTitle}
             </span>
           </div>
-          <div className="text-sm text-gray-600 leading-relaxed space-y-2.5">
+          <div className="text-sm text-gray-600 dark:text-gray-300 leading-relaxed space-y-2.5">
             {tradeoffIntro}
             {tradeoffBullets && tradeoffBullets.length > 0 && (
               <ul className="space-y-2 pt-1">
@@ -815,10 +821,10 @@ function GuideCard({
   return (
     <Link
       to={to}
-      className="group rounded-2xl border border-gray-200 bg-white shadow-sm overflow-hidden flex flex-col transition-all duration-300 motion-safe:hover:-translate-y-1 hover:shadow-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary/40"
+      className="group rounded-2xl border border-gray-200 dark:border-white/10 bg-white dark:bg-[#1a1f29] shadow-sm overflow-hidden flex flex-col transition-all duration-300 motion-safe:hover:-translate-y-1 hover:shadow-xl dark:hover:shadow-[0_8px_24px_rgba(0,0,0,0.4)] focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary/40"
     >
       {/* Image header */}
-      <div className="aspect-[16/9] bg-gray-100 relative overflow-hidden">
+      <div className="aspect-[16/9] bg-gray-100 dark:bg-[#0a0c14] relative overflow-hidden">
         <img
           src={image}
           alt={imageAlt}
@@ -843,15 +849,15 @@ function GuideCard({
 
       {/* Body */}
       <div className="p-7 sm:p-8 flex flex-col flex-1">
-        <h3 className="text-xl font-bold tracking-tight text-gray-900 mb-2 leading-snug">
+        <h3 className="text-xl font-bold tracking-tight text-gray-900 dark:text-white mb-2 leading-snug">
           {title}
         </h3>
-        <p className="text-gray-600 mb-5 leading-relaxed">{description}</p>
+        <p className="text-gray-600 dark:text-gray-300 mb-5 leading-relaxed">{description}</p>
         <ul className="space-y-2.5 mb-7">
           {bullets.map((b, i) => (
             <li key={i} className="flex items-start gap-2.5">
               <CircleCheck className={cn('size-4 shrink-0 mt-0.5', accentText)} />
-              <span className="text-gray-700 text-sm leading-snug">{b}</span>
+              <span className="text-gray-700 dark:text-gray-300 text-sm leading-snug">{b}</span>
             </li>
           ))}
         </ul>