style: expand section spacing and page top/bottom margins across all pages

refer_landing_page/app/standardization/page.tsx

@@ -9,7 +9,7 @@ export default function StandardizationPage() {
   );
 
   return (
-    <div className="container-content space-y-16 py-6">
+    <div className="container-content space-y-20 md:space-y-28 py-10 md:py-16">
       {/* Header */}
       <section className="space-y-3">
         <div className="flex items-center gap-3">
@@ -27,7 +27,7 @@ export default function StandardizationPage() {
       </section>
 
       {/* Standards Bodies Section */}
-      <section className="space-y-12 pt-6 border-t border-line">
+      <section className="space-y-12 pt-12 md:pt-16 border-t border-line">
         {standardsBodies.map((body, idx) => (
           <div key={idx} className="bg-paper p-8 rounded-lg border border-line space-y-6">
             <div className="flex flex-wrap justify-between items-start gap-4 border-b border-line pb-4">