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Build a single-file mobile web app (index.html with inline CSS/JS) for Android WebView.

The app: Daily Quotes — a quote browser with 30+ built-in famous quotes in categories, swipe or tap Next, favourites and sharing, where the page itself decides when ads show: an interstitial after every 8 quotes viewed but only when the user taps Next, a rewarded ad that unlocks a bonus quote pack for 24 hours (expiry stored in localStorage), and a banner only on the favourites list. Quote cards with favourites; an ad every 8 quotes on Next, and a rewarded ad unlocks a bonus pack for 24 h.

Requirements:
- Mobile-first, touch-friendly UI (min 44px tap targets), works in portrait, supports light and dark mode.
- Use <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover"> and pad for env(safe-area-inset-*).
- You may load libraries from a CDN (jsDelivr/unpkg); show a friendly message if the device is offline.

The page runs inside an Android app that injects a native bridge as window.FreeApp. Available APIs:
- FreeApp.ads.{loadBanner(unit?, pos?), showBanner(pos?: 'top'|'bottom'), hideBanner(), loadInterstitial(), showInterstitial(), isInterstitialLoaded(), loadRewarded(), isRewardedLoaded(), showRewarded(): Promise<{amount, type}>, on(cb: (e: {event, message?}) => void)} — AdMob; only present when ads are enabled in the builder
- FreeApp.toast(message: string): void — short native toast
- FreeApp.vibrate(ms?: number | number[]): void — one-shot buzz (default 50 ms) or an [off, on, off, on…] pattern
- FreeApp.share(text: string, title?: string): void — Android share sheet

Rules for the bridge:
- Always guard calls with `window.FreeApp &&` (or `if (window.FreeApp) { … }`) and provide a browser fallback so the page also works in a normal browser.
- The bridge may be injected after your script runs: do native setup inside `window.addEventListener('freeappready', …)` and also run it immediately if window.FreeApp already exists.
- Do not use alert/confirm for normal feedback; prefer FreeApp.toast when available.

Return the complete index.html in one code block.

My idea: [DESCRIBE YOUR APP IDEA HERE]