feat(website): 官网企业版视觉升级

- 引入 Geist 字体，去除紫色渐变，克制阴影与交互态
- 导航/卡片/按钮统一企业风格，各区块视觉收敛

website/src/components/Footer.tsx

@@ -19,7 +19,7 @@ export default function Footer() {
       <div className="container-page space-y-8">
         {/* 推荐链接 */}
         <div>
-          <h3 className="mb-4 text-sm font-semibold uppercase tracking-wider text-muted-foreground">
+          <h3 className="mb-4 text-sm font-semibold text-muted-foreground">
             {t.footer.recommend}
           </h3>
           <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-3">
@@ -32,9 +32,10 @@ export default function Footer() {
                   href={link.url}
                   target="_blank"
                   rel="noreferrer"
-                  className="group flex items-start gap-3 rounded-xl border border-border bg-card p-4 transition-all hover:-translate-y-0.5 hover:border-primary/50"
+                  className="group flex items-start gap-3 rounded-2xl border border-border bg-card p-4 transition-all duration-200 hover:-translate-y-0.5 hover:border-primary/40"
+                  style={{ boxShadow: "var(--shadow-soft)" }}
                 >
-                  <div className="flex h-10 w-10 shrink-0 items-center justify-center overflow-hidden rounded-lg border border-border bg-white">
+                  <div className="flex h-10 w-10 shrink-0 items-center justify-center overflow-hidden rounded-xl border border-border bg-white">
                     {logo ? (
                       <img
                         src={asset(logo)}
@@ -48,11 +49,11 @@ export default function Footer() {
                     )}
                   </div>
                   <div className="min-w-0 flex-1">
-                    <div className="font-semibold group-hover:text-primary">
+                    <div className="font-semibold tracking-tight group-hover:text-primary">
                       {link.name}
                     </div>
                     {text && (
-                      <p className="mt-1 line-clamp-3 text-xs text-muted-foreground">
+                      <p className="mt-1 line-clamp-3 text-xs leading-relaxed text-muted-foreground">
                         {text}
                       </p>
                     )}

website/src/components/Nav.tsx

@@ -11,7 +11,7 @@ export default function Nav() {
     { to: "/download", label: t.nav.download },
   ];
   return (
-    <header className="sticky top-0 z-40 border-b border-border bg-background/80 backdrop-blur">
+    <header className="sticky top-0 z-40 border-b border-border bg-background/70 backdrop-blur-md">
       <div className="container-page flex h-14 items-center justify-between gap-4">
         <NavLink
           to="/"

website/src/components/SectionShell.tsx

@@ -25,12 +25,12 @@ export default function SectionShell({ id, title, subtitle, children }: SectionS
         <div className="mb-12 max-w-3xl">
           <h2
             id={`${id}-title`}
-            className="text-3xl font-bold tracking-tight md:text-4xl"
+            className="text-3xl font-bold tracking-[-0.03em] md:text-4xl"
           >
             {title}
           </h2>
           {subtitle && (
-            <p className="mt-3 text-base text-muted-foreground">{subtitle}</p>
+            <p className="mt-3 text-base leading-relaxed text-muted-foreground">{subtitle}</p>
           )}
         </div>
         {children}