Convert hotel landing to React + Tailwind v4 with amoCRM lead capture

Ports the single-file ЭкзоОтель page to the same architecture as the fitness
landing: Vite + React 19 + TypeScript + Tailwind v4 on the client, Express 5 for
the /api/leads/hotels endpoint, zod schema shared between the two.

The original page is kept in legacy/index.html as the visual reference. Its 15
inlined base64 images are extracted to files (the 1 MB HTML becomes ~318 KB of
JS plus assets loaded on demand), and its text is reproduced line for line —
verified with an innerText diff. Section heights stay within 0.6% at 375 and
1440 px; the drift comes from Inter actually loading, which the original asked
for but never served.

Three deliberate departures, documented in the README:
  * eyebrow and lead in the CTA block were dark teal on navy (3.4:1); they now
    match the other dark sections
  * hero fact values overflowed their 80px column into the label below 430px
  * "2025–2026г.." typo in the market source note

Leads reuse the fitness amoCRM integration: contact lookup by phone in every
spelling, deal in the first stage of pipeline 10980758, account fields matched
automatically with the rest written to a note. Rate limit, honeypot, and a
localStorage fallback so a lead survives the CRM being down. Vite runs on 5174
and the API on 3001 so both landings can run at once.

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

hotel/src/hooks/useAnchorScroll.ts

@@ -0,0 +1,28 @@
+import { useEffect, type RefObject } from 'react'
+
+/**
+ * In-page anchors scroll to the target minus the fixed header, exactly as the
+ * original landing did. The header height is read at click time because it
+ * changes with the breakpoint and with the logo's fluid width.
+ */
+export function useAnchorScroll(headerRef: RefObject<HTMLElement | null>) {
+  useEffect(() => {
+    const onClick = (event: MouseEvent) => {
+      if (event.defaultPrevented || event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey) return
+
+      const link = (event.target as Element | null)?.closest('a[href^="#"]')
+      const href = link?.getAttribute('href')
+      if (!href || href === '#') return
+
+      const target = document.querySelector(href)
+      if (!target) return
+
+      event.preventDefault()
+      const offset = (headerRef.current?.offsetHeight ?? 0) + 8
+      window.scrollTo({ top: target.getBoundingClientRect().top + window.scrollY - offset, behavior: 'smooth' })
+    }
+
+    document.addEventListener('click', onClick)
+    return () => document.removeEventListener('click', onClick)
+  }, [headerRef])
+}