V2 site: Apple-inspired redesign with SEO, native pricing, FAQ, and mobile nav

Implements the revised website enhancement requirements:
- Light, clean Apple-style layout (system font stack, pill buttons,
  generous whitespace) with a dark AI showcase section
- SEO foundation: meta description, Open Graph, Twitter Card, and
  JSON-LD (SoftwareApplication, Organization, FAQPage)
- Native HTML pricing tiers (Starter $29 / Professional $79 /
  Enterprise custom) with monthly-annual toggle, replacing the
  uncrawlable iframe; pulled from app.hoaledgeriq.com/pricing
- New sections: How It Works (3 steps), trust bar, FAQ accordion,
  spreadsheet comparison table, closing CTA
- Mobile hamburger menu (nav previously disappeared under 640px)
- Pillar pages surfaced in footer (investment, reserve studies,
  assessment calculator)
- Performance: deferred Chatwoot load, image dimensions, preload
  hints, no blocking webfont
- Accessibility: skip link, aria states, prefers-reduced-motion
- ROI calculator preserved (same IDs/handlers in app.js); new v2.js
  for hamburger, billing toggle, section highlighting, GA4 events
- Legacy article styles retained so Insights pages keep working

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

v2.js

@@ -0,0 +1,133 @@
+/* HOA LedgerIQ — V2 site behaviors
+   Mobile nav, billing toggle, secondary calc trigger,
+   active-section nav highlighting, GA4 events. */
+
+(function () {
+  'use strict';
+
+  // ── Mobile hamburger nav ────────────────────────────────
+  var toggle = document.getElementById('navToggle');
+  var links = document.getElementById('navLinks');
+
+  if (toggle && links) {
+    toggle.addEventListener('click', function () {
+      var open = links.classList.toggle('open');
+      toggle.setAttribute('aria-expanded', open ? 'true' : 'false');
+      toggle.setAttribute('aria-label', open ? 'Close navigation menu' : 'Open navigation menu');
+    });
+
+    // Close the panel when a link is chosen
+    links.addEventListener('click', function (e) {
+      if (e.target.tagName === 'A') {
+        links.classList.remove('open');
+        toggle.setAttribute('aria-expanded', 'false');
+      }
+    });
+
+    // Close on Escape
+    document.addEventListener('keydown', function (e) {
+      if (e.key === 'Escape' && links.classList.contains('open')) {
+        links.classList.remove('open');
+        toggle.setAttribute('aria-expanded', 'false');
+        toggle.focus();
+      }
+    });
+  }
+
+  // ── Second calculator trigger (footer CTA) ─────────────
+  var calc2 = document.getElementById('openCalc2');
+  var overlay = document.getElementById('calcOverlay');
+  if (calc2 && overlay) {
+    calc2.addEventListener('click', function () {
+      overlay.classList.add('open');
+      document.body.style.overflow = 'hidden';
+      if (window.gtag) {
+        gtag('event', 'calculator_open', { event_category: 'engagement', event_label: 'CTA section' });
+      }
+    });
+  }
+
+  // ── Billing interval toggle ─────────────────────────────
+  var billingOpts = document.querySelectorAll('.billing-opt');
+  billingOpts.forEach(function (btn) {
+    btn.addEventListener('click', function () {
+      var interval = btn.dataset.billing; // 'month' | 'year'
+
+      billingOpts.forEach(function (b) {
+        b.classList.toggle('is-active', b === btn);
+        b.setAttribute('aria-selected', b === btn ? 'true' : 'false');
+      });
+
+      document.querySelectorAll('.price-num[data-monthly]').forEach(function (el) {
+        var val = interval === 'year' ? el.dataset.annual : el.dataset.monthly;
+        el.textContent = '$' + val;
+      });
+      document.querySelectorAll('.price-per[data-monthly]').forEach(function (el) {
+        el.textContent = interval === 'year' ? el.dataset.annual : el.dataset.monthly;
+      });
+
+      if (window.gtag) {
+        gtag('event', 'billing_toggle', { event_category: 'engagement', event_label: interval });
+      }
+    });
+  });
+
+  // ── Active-section nav highlighting ─────────────────────
+  if ('IntersectionObserver' in window && links) {
+    var sectionIds = ['features', 'how', 'ai', 'pricing', 'faq'];
+    var navAnchors = {};
+    sectionIds.forEach(function (id) {
+      var a = links.querySelector('a[href="#' + id + '"]');
+      if (a) navAnchors[id] = a;
+    });
+
+    var observer = new IntersectionObserver(function (entries) {
+      entries.forEach(function (entry) {
+        var a = navAnchors[entry.target.id];
+        if (!a) return;
+        if (entry.isIntersecting) {
+          Object.keys(navAnchors).forEach(function (k) { navAnchors[k].classList.remove('is-active'); });
+          a.classList.add('is-active');
+        }
+      });
+    }, { rootMargin: '-40% 0px -55% 0px' });
+
+    sectionIds.forEach(function (id) {
+      var el = document.getElementById(id);
+      if (el) observer.observe(el);
+    });
+  }
+
+  // ── GA4: scroll depth + CTA clicks (lightweight) ───────
+  var fired = {};
+  window.addEventListener('scroll', function () {
+    var pct = Math.round((window.scrollY + window.innerHeight) / document.body.scrollHeight * 100);
+    [25, 50, 75].forEach(function (mark) {
+      if (pct >= mark && !fired[mark]) {
+        fired[mark] = true;
+        if (window.gtag) gtag('event', 'scroll_' + mark, { event_category: 'engagement' });
+      }
+    });
+  }, { passive: true });
+
+  document.querySelectorAll('a.btn-primary, #openCalc, #openCalc2, #calcSubmit').forEach(function (el) {
+    el.addEventListener('click', function () {
+      if (!window.gtag) return;
+      var label = (el.textContent || '').trim().substring(0, 50) || el.id;
+      gtag('event', 'cta_click', { event_category: 'conversion', event_label: label });
+    });
+  });
+
+  // ── GA4: FAQ engagement ─────────────────────────────────
+  document.querySelectorAll('.faq-item').forEach(function (item) {
+    item.addEventListener('toggle', function () {
+      if (item.open && window.gtag) {
+        var q = item.querySelector('summary');
+        gtag('event', 'faq_open', {
+          event_category: 'engagement',
+          event_label: q ? q.textContent.trim().substring(0, 60) : 'unknown'
+        });
+      }
+    });
+  });
+})();