feat: glitter sparkles on heart, metallic gold text across all headings

- Add animated gold sparkle dots on heart surface with glow filter
- Brighten heart metal fill for better visibility against dark bg
- Update headline gradient to dark metallic gold (no white tones)
- Apply gradient-text to all section headings for consistency
- Warm gold subtitle color in hero

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

src/components/sections/Hero.tsx

@@ -45,11 +45,11 @@ export function Hero() {
       <div className="section-container relative z-10 text-center">
         <div className="hero-logo relative mx-auto mb-10 flex items-center justify-center" style={{ width: 220, height: 181 }}>
           {/* Soft ambient glow behind heart */}
-          <div className="absolute -inset-10 rounded-full blur-[80px]" style={{ background: "radial-gradient(circle, rgba(201,169,110,0.15), transparent 70%)" }} />
+          <div className="absolute -inset-10 rounded-full blur-[80px]" style={{ background: "radial-gradient(circle, rgba(201,169,110,0.25), transparent 70%)" }} />
           <div className="hero-logo-heartbeat relative">
             <HeroLogo
               size={220}
-              className="drop-shadow-[0_0_8px_rgba(201,169,110,0.25)] drop-shadow-[0_0_30px_rgba(201,169,110,0.1)]"
+              className="drop-shadow-[0_0_10px_rgba(201,169,110,0.35)] drop-shadow-[0_0_40px_rgba(201,169,110,0.15)]"
             />
           </div>
         </div>
@@ -58,7 +58,7 @@ export function Hero() {
           <span className="gradient-text">{hero.headline}</span>
         </h1>
 
-        <p className="hero-subtitle mx-auto mt-6 max-w-lg text-lg text-neutral-400 sm:text-xl">
+        <p className="hero-subtitle mx-auto mt-6 max-w-lg text-lg text-[#b8a080] sm:text-xl">
           {hero.subheadline}
         </p>