Marketing: lead the hero with the MCP-gateway positioning (#1089)

Add a hero subhead that says plainly what Executor is (an MCP gateway) and that
anything speaking MCP connects to one endpoint and reaches every connected
tool. The h1 alone left the mechanism ambiguous.

Author: RhysSullivan

apps/marketing/src/pages/index.astro

@@ -99,11 +99,18 @@ Source (and the place to start if something breaks): https://github.com/RhysSull
         <div class="relative z-10 px-6 sm:px-10 pt-24 pb-28 sm:pt-32 sm:pb-36">
           <div class="max-w-[920px] mx-auto text-center">
             <h1
-              class="rise-1 text-[clamp(2.8rem,7.2vw,6rem)] font-semibold tracking-[-0.025em] leading-[1.02] text-ink mb-12 mx-auto max-w-[18ch] text-balance"
+              class="rise-1 text-[clamp(2.8rem,7.2vw,6rem)] font-semibold tracking-[-0.025em] leading-[1.02] text-ink mb-6 mx-auto max-w-[18ch] text-balance"
             >
               Connect any agent to <span class="serif-italic">everything</span>.
             </h1>
-            <div class="rise-2 max-w-[760px] mx-auto mb-12">
+            <p
+              class="rise-2 mx-auto mb-12 max-w-[50ch] text-[clamp(1.05rem,2.4vw,1.3rem)] leading-[1.5] text-ink-2"
+            >
+              Executor is an MCP gateway. Anything that speaks MCP, like Claude
+              Code, Cursor, or Codex, points at one endpoint and reaches every
+              tool you connect.
+            </p>
+            <div class="rise-3 max-w-[760px] mx-auto mb-12">
               <div class="surface-card p-6 sm:p-7">
                 <AnimatedBeamDemo client:load variant="stripe" />
               </div>