fix(ui): improve mobile responsiveness on marketing homepage

vibn-frontend/app/styles/new-site.css

@@ -186,4 +186,55 @@
     .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
     @media (max-width: 880px) { .grid-3 { grid-template-columns: 1fr; } }
   
+
+    /* -- Mobile Adjustments -- */
+    @media (max-width: 760px) {
+      .nav-links { display: none; }
+      .nav-inner { padding: 0 16px; }
+      .wrap { padding-inline: 20px; }
+      
+      h1, h2 { text-wrap: balance; word-wrap: break-word; overflow-wrap: break-word; hyphens: auto; }
+      p { text-wrap: pretty; }
+      
+      .hero-quote { font-size: clamp(36px, 12vw, 56px) !important; padding: 0 10px; }
+      .hero-sub { font-size: 18px !important; padding: 0 10px; }
+      
+      .prompt { margin: 14px 16px 0; max-width: calc(100% - 32px); }
+      .prompt-inner { padding: 14px 14px 10px !important; }
+      .prompt-bar { flex-direction: column; align-items: stretch !important; gap: 12px; }
+      .prompt-tools { justify-content: center; flex-wrap: wrap; }
+      .prompt-send { width: 100%; justify-content: center; }
+      
+      .wall-title { font-size: clamp(32px, 10vw, 44px) !important; }
+      .window { margin: 0 16px; width: calc(100% - 32px); border-radius: 12px; }
+      .window-bar { padding: 10px 12px; }
+      .window-name { font-size: 11px; }
+      .window-tag { display: none; }
+      .msg { padding: 16px 12px; flex-direction: column; gap: 10px; }
+      .msg-name { font-size: 11px; }
+      .homework-list { font-size: 13px; padding-left: 20px; }
+      
+      .crossed-title { font-size: clamp(32px, 10vw, 44px) !important; }
+      .crossed-sub { font-size: 16px !important; }
+      
+      .journey-grid { grid-template-columns: 1fr !important; padding: 0 16px; }
+      .step { min-height: auto; padding: 24px 20px; }
+      
+      .audience-grid { grid-template-columns: 1fr !important; padding: 0 16px; }
+      .a-card { min-height: auto; padding: 24px 20px; }
+      
+      .closing-title { font-size: clamp(36px, 12vw, 52px) !important; }
+      .closing-cta .row { flex-direction: column; width: 100%; padding: 0 20px; }
+      .closing-cta .row .btn { width: 100%; justify-content: center; }
+      
+      .vibn-footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 20px; }
+      .vibn-footer-trust { justify-content: center; }
+      .vibn-footer-bottom { flex-direction: column-reverse; gap: 24px; text-align: center; }
+      .vibn-footer-links { flex-wrap: wrap; justify-content: center; }
+      
+      /* Hide the modal steps animation on mobile to save space */
+      .modal { padding: 20px 20px 16px !important; margin: 16px; width: calc(100% - 32px) !important; }
+      .modal-steps { display: none !important; }
+    }
+
 .new-site-wrapper { min-height: 100vh; position: relative; overflow: hidden; }

vibn-frontend/marketing/components/new-site/index.tsx

@@ -976,7 +976,7 @@ function Hero({ onStart, variant = "quote" }) {
           background: transparent;
           border: 0;
           color: var(--fg);
-          font: 17px/1.45 var(--font-sans);
+          font: 16px/1.45 var(--font-sans);
           resize: none;
           outline: none;
           padding: 6px 4px;
@@ -990,7 +990,7 @@ function Hero({ onStart, variant = "quote" }) {
           top: 24px; left: 22px; right: 22px;
           pointer-events: none;
           color: var(--fg-faint);
-          font: 17px/1.45 var(--font-sans);
+          font: 16px/1.45 var(--font-sans);
           text-align: left;
         }
         .prompt-typed::after {
@@ -1371,7 +1371,7 @@ function Wall() {
           border: 1px solid var(--hairline);
           border-radius: 10px;
           color: var(--fg-dim);
-          font-size: 13.5px;
+          font-size: 14px;
           transition: opacity .3s, filter .3s;
         }
         .homework-list li::before {