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/components/SiteHeader.tsx

@@ -0,0 +1,56 @@
+import type { RefObject } from 'react'
+import logo from '../assets/images/exo-logo.png'
+import { contacts, navLinks } from '../data/content'
+import { cx } from '../lib/cx'
+import { ButtonLink, buttonClass, headerSize } from './Button'
+import { PhoneIcon } from './Icons'
+import { Container } from './Layout'
+
+export function SiteHeader({ scrolled, headerRef }: { scrolled: boolean; headerRef: RefObject<HTMLElement | null> }) {
+  return (
+    <header
+      ref={headerRef}
+      className={cx(
+        'fixed inset-x-0 top-0 z-50 py-[14px] transition-[background-color,box-shadow,backdrop-filter] duration-250 md:py-[18px]',
+        scrolled && 'bg-navy-deep/[0.86] shadow-[0_12px_40px_rgb(3_20_34/0.18)] backdrop-blur-[18px]',
+      )}
+    >
+      <Container className="flex items-center justify-between gap-[18px]">
+        <a className="inline-flex min-w-0 items-center" href="#top" aria-label="Экзо Групп — на первый экран">
+          <img
+            alt="Экзо Групп — российские технологии реабилитации"
+            className="block h-auto w-[clamp(172px,20vw,232px)] max-w-full object-contain object-left compact:w-[150px]"
+            src={logo}
+            width={900}
+            height={204}
+          />
+        </a>
+
+        <nav
+          aria-label="Основная навигация"
+          className="hidden items-center gap-[30px] text-[14px] font-[650] text-white/[0.76] md:flex"
+        >
+          {navLinks.map((link) => (
+            <a key={link.href} href={link.href} className="transition-colors duration-200 hover:text-white">
+              {link.label}
+            </a>
+          ))}
+        </nav>
+
+        <div className="flex shrink-0 items-center gap-[10px] compact:gap-[6px]">
+          <a
+            href={contacts.phoneHref}
+            aria-label="Позвонить в Экзо Групп"
+            className={buttonClass('call', 'compact:px-[12px]', headerSize)}
+          >
+            <PhoneIcon />
+            <span className="compact:hidden">Звонок</span>
+          </a>
+          <ButtonLink href="#proposal" size={headerSize}>
+            Получить предложение
+          </ButtonLink>
+        </div>
+      </Container>
+    </header>
+  )
+}