fix(a11y): guard Hero entrance animations with reduced-motion; tone down founder card shadow

- Hero 入场 motion.* 未守卫 reduced-motion，与 ScrollReveal 范式不一致

- 新增 rise() 守卫：reduce 时传空 initial/animate，元素静态可见

- 创始团队引言卡 shadow-xl 降级 shadow-sm + 品牌红 hairline 边框

src/app/(marketing)/home-content-v15.tsx

@@ -175,6 +175,14 @@ function HeroSection({ heroData }: {
   const secondaryCtaHref = heroData?.secondaryCtaHref || '/products';
   const slogan = siteConfig.slogan || COMPANY_INFO.slogan;
 
+  // reduced-motion 守卫：与 ScrollReveal 同范式——reduce 时传空 initial/animate，
+  // 元素直接以自然（可见）状态渲染，零位移/淡入；默认（非 reduce，含首帧 null）正常动画。
+  const rise = (y: number, delay: number, duration = 0.35) => ({
+    initial: reduceMotion ? {} : { opacity: 0, y },
+    animate: reduceMotion ? {} : { opacity: 1, y: 0 },
+    transition: { duration: reduceMotion ? 0 : duration, delay: reduceMotion ? 0 : delay, ease: EASE_OUT },
+  });
+
   return (
     <section
       ref={containerRef}
@@ -208,9 +216,7 @@ function HeroSection({ heroData }: {
           {/* 品牌口号 Badge：画布上的品牌红信号（深底走 brand-light 保证对比度；hero 不重复渲染 Logo，避免与导航栏重复） */}
           {slogan && (
             <motion.div
-              initial={{ opacity: 0, y: 20 }}
-              animate={{ opacity: 1, y: 0 }}
-              transition={{ duration: 0.35, delay: 0.03, ease: EASE_OUT }}
+              {...rise(20, 0.03)}
               className="mb-6"
             >
               <span className={`inline-flex items-center gap-2 px-3 py-1.5 rounded-full text-sm font-medium border ${dark ? 'bg-brand/10 text-brand-light border-brand/30' : 'bg-brand/5 text-brand border-brand/15'}`}>
@@ -221,9 +227,7 @@ function HeroSection({ heroData }: {
 
           {/* 主标题：大胆、直接（深底白色 / 浅底墨色，随 HERO_VARIANT 切换） */}
           <motion.h1
-            initial={{ opacity: 0, y: 40 }}
-            animate={{ opacity: 1, y: 0 }}
-            transition={{ duration: 0.45, delay: 0.06, ease: EASE_OUT }}
+            {...rise(40, 0.06, 0.45)}
             className={`text-4xl sm:text-5xl md:text-6xl lg:text-6xl 2xl:text-7xl font-bold leading-[1.05] tracking-tight mb-7 sm:mb-8 ${dark ? 'text-white' : 'text-ink'}`}
           >
             {heading}
@@ -231,21 +235,17 @@ function HeroSection({ heroData }: {
 
           {/* 主张：紧随声明之后，回答「凭什么信你」（声明先行，数据下沉至成果带） */}
           {subheading && (
-            <motion.p
-              initial={{ opacity: 0, y: 30 }}
-              animate={{ opacity: 1, y: 0 }}
-              transition={{ duration: 0.35, delay: 0.16, ease: EASE_OUT }}
-              className={`text-lg sm:text-xl max-w-2xl leading-relaxed mb-10 ${dark ? 'text-white/70' : 'text-text-secondary'}`}
-            >
+          <motion.p
+            {...rise(30, 0.16)}
+            className={`text-lg sm:text-xl max-w-2xl leading-relaxed mb-10 ${dark ? 'text-white/70' : 'text-text-secondary'}`}
+          >
               {subheading}
             </motion.p>
           )}
 
           {/* CTA 按钮组 */}
           <motion.div
-            initial={{ opacity: 0, y: 30 }}
-            animate={{ opacity: 1, y: 0 }}
-            transition={{ duration: 0.35, delay: 0.24, ease: EASE_OUT }}
+            {...rise(30, 0.24)}
             className="flex flex-col sm:flex-row sm:items-center gap-4 sm:gap-6"
           >
             <CTAButton href={ctaHref} dataTestId="hero-primary-cta">{ctaLabel}</CTAButton>
@@ -637,7 +637,7 @@ function FounderQuoteSection({ pageCopy }: { pageCopy?: HomePageCopy | null }) {
       />
       <div className="max-w-container mx-auto px-4 sm:px-6 lg:px-10 relative z-10">
         <ScrollReveal className="max-w-4xl mx-auto text-center">
-          <div className="bg-bg-primary/95 rounded-2xl p-8 sm:p-10 md:p-12 max-w-3xl mx-auto shadow-xl">
+          <div className="bg-bg-primary/95 rounded-2xl p-8 sm:p-10 md:p-12 max-w-3xl mx-auto shadow-sm border border-brand/10">
             <div className="flex items-center justify-center gap-3 mb-8">
               <div className="w-10 h-px bg-brand/40" />
               <span className="text-[13px] tracking-[0.12em] font-semibold text-brand">