hanzo.ai/app/(marketing)/calculator/page.tsx

"use client"

import { useMemo, useState, type ReactNode } from 'react'
import dynamic from 'next/dynamic'
import { Text, View, XStack, YStack } from '@hanzo/ui'
import { Models } from '@/components/api/count'
import { phrase } from '@hanzo/i18n'
import { useI18n } from '@hanzo/i18n/react'
import { Fold } from '@/components/marketing/fold'

// The token calculator stands below the first screen: its script loads after it.
const Savings = dynamic(() => import('@/components/sales/Savings'))

// True Savings — an operating-cost model, not a TAM calculator. Every number on
// this page is derived from a visible, editable control; nothing is hardcoded
// into the headline. Two axes are kept deliberately separate: COVERAGE (how much
// of a category Hanzo replaces, which carries weight) and EVIDENCE (how well we
// can prove it, which carries none). Collapsing them would let an attestation
// read as a verification, which is the one thing this page must never do.

const FTE = 220_000 // fully loaded engineer, used for both glue reclaimed and Hanzo ops
const REF_E = 100 // reference deployment the analyst priced against
const REF_D = 30

type Cov = 'full' | 'partial' | 'experimental' | 'roadmap'
type Ev = 'verified' | 'gap' | 'internal' | 'attested' | 'repo'

const WEIGHT: Record<Cov, number> = { full: 1, partial: 0.5, experimental: 0.25, roadmap: 0 }
const COV_LABEL: Record<Cov, string> = {
  full: phrase('full'),
  partial: phrase('partial 50%'),
  experimental: phrase('experimental 25%'),
  roadmap: phrase('roadmap 0%'),
}
const EV_LABEL: Record<Ev, string> = {
  verified: phrase('verified'),
  gap: phrase('verified gap'),
  internal: phrase('internal production'),
  attested: phrase('management-attested'),
  repo: phrase('repository-verified'),
}
const COV_CYCLE: Cov[] = ['full', 'partial', 'experimental', 'roadmap']

// Billing basis, so the model still means something away from the reference
// deployment: per-seat rows scale on employees, per-engineer rows on engineers,
// platform-fee rows not at all. At E=100/30% every factor is 1.0, which is what
// reproduces the analyst's $613k software total exactly.
type Basis = 's' | 'e' | 'f'

type Row = {
  name: string
  replaces: string
  hanzo: string
  k: number // analyst default, $k/yr at the reference deployment
  basis: Basis
  cov: Cov
  ev: Ev
}

const ROWS: Row[] = [
  { name: phrase('SSO & workforce identity'), replaces: 'Okta / Auth0', hanzo: 'iam · zero-trust · authz', k: 10, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Customer identity (product)'), replaces: 'Auth0 B2C', hanzo: 'iam (multi-tenant, per-org CEK)', k: 14, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Secrets & KMS'), replaces: 'Vault Cloud', hanzo: 'kms', k: 11, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('Observability'), replaces: 'Datadog / New Relic', hanzo: 'o11y · metrics', k: 54, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('Error tracking'), replaces: 'Sentry', hanzo: 'o11y (errortracking)', k: 9, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('Feature flags'), replaces: 'LaunchDarkly', hanzo: 'flags', k: 7, basis: 'e', cov: 'full', ev: 'repo' },
  { name: phrase('Product analytics'), replaces: 'Amplitude / Mixpanel', hanzo: 'analytics', k: 15, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Event routing / CDP'), replaces: 'Segment', hanzo: 'destinations · tracker', k: 22, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Git hosting'), replaces: 'GitHub Enterprise', hanzo: 'git (git.hanzo.ai)', k: 8, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('CI/CD'), replaces: 'CircleCI / Actions', hanzo: 'hanzoai/ci · arc runners', k: 18, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('Container registry'), replaces: 'ECR / Docker Hub', hanzo: 'registry (oci.hanzo.ai)', k: 4, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('PaaS / app hosting'), replaces: 'Vercel / Heroku', hanzo: 'paas · deploy · functions', k: 13, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('App backend / BaaS'), replaces: 'Supabase / Firebase', hanzo: 'base · docdb · orm', k: 15, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Queues & streaming'), replaces: 'Confluent / SQS', hanzo: 'pubsub (NATS) · kafka', k: 10, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('AI gateway & routing'), replaces: 'Portkey / OpenRouter', hanzo: 'ai · zen · gateway', k: 12, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Workflow automation'), replaces: 'Zapier', hanzo: 'automations · connectorruntime · cron', k: 12, basis: 's', cov: 'full', ev: 'repo' },
  { name: phrase('Billing & metering'), replaces: 'Chargebee / Metronome', hanzo: 'billing · usage · entitlements · pricing', k: 18, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Commerce'), replaces: 'Shopify Plus', hanzo: 'commerce · marketplace', k: 24, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('E-signature'), replaces: 'DocuSign', hanzo: 'sign', k: 2, basis: 's', cov: 'full', ev: 'repo' },
  { name: phrase('Cap table'), replaces: 'Carta', hanzo: 'captable', k: 5, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Data rooms'), replaces: 'DocSend / iDeals', hanzo: 'dataroom', k: 6, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Referrals & affiliates'), replaces: 'PartnerStack', hanzo: 'affiliates · referrals · link', k: 9, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Experiments & evals'), replaces: 'Statsig / Optimizely', hanzo: 'experiments · evals', k: 12, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Zero-trust access'), replaces: 'Tailscale / CF Access', hanzo: 'zero-trust · ingress', k: 7, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Search'), replaces: 'Algolia / Elastic', hanzo: 'index · websearch', k: 12, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Vector store'), replaces: 'Pinecone', hanzo: 'knowledge', k: 8, basis: 'f', cov: 'partial', ev: 'gap' },
  { name: phrase('Compliance automation'), replaces: 'Vanta / Drata', hanzo: 'compliance · audit · sbom · security', k: 18, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('CRM'), replaces: 'Salesforce / HubSpot', hanzo: 'crm · company', k: 27, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Marketing automation'), replaces: 'HubSpot Marketing', hanzo: 'marketing · campaign', k: 10, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('Projects & tasks'), replaces: 'Linear / Asana', hanzo: 'projects · tasks', k: 14, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Knowledge & docs'), replaces: 'Notion / Confluence', hanzo: 'knowledge · guide', k: 12, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Support & messaging'), replaces: 'Intercom / Zendesk', hanzo: 'help · ask · channels · bots', k: 11, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Notifications & email'), replaces: 'SendGrid / Customer.io', hanzo: 'notify', k: 7, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Incident & status'), replaces: 'PagerDuty / Statuspage', hanzo: 'o11y (incident · status)', k: 11, basis: 'e', cov: 'full', ev: 'internal' },
  { name: phrase('Finance ops & ledger'), replaces: phrase('NetSuite add-ons'), hanzo: 'books · treasury · ledger-fi', k: 6, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('Design & creative'), replaces: 'Figma / Canva', hanzo: 'studio (studio.hanzo.ai)', k: 16, basis: 's', cov: 'full', ev: 'repo' },
  { name: phrase('Video, calls & calendar'), replaces: 'Zoom / Calendly', hanzo: 'team (calls · calendar)', k: 18, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Office suite & drive'), replaces: 'Google Workspace', hanzo: 'office · drive', k: 14, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('HR & payroll'), replaces: 'Gusto / Rippling', hanzo: 'hr · payroll', k: 48, basis: 's', cov: 'full', ev: 'internal' },
  { name: phrase('Payment orchestration'), replaces: phrase('PSP markup over interchange+'), hanzo: 'psp · x402 · wallets', k: 12, basis: 'f', cov: 'full', ev: 'repo' },
  { name: phrase('ERP / CMS / business apps'), replaces: 'NetSuite / WordPress', hanzo: 'erp · base', k: 20, basis: 'f', cov: 'full', ev: 'internal' },
  { name: phrase('LLM inference & routing'), replaces: 'OpenAI / Anthropic API', hanzo: 'enso (routing) · zen (self-hosted)', k: 36, basis: 'e', cov: 'full', ev: 'attested' },
]

const AI_ROW = ROWS.length - 1

// One chip per vendor that shows up on a real bill — several per category. A
// category counts while any of its vendors is selected; the counter counts
// vendors, not categories. 107 chips, which is the same 107 dependencies the
// reference deployment consolidated.
const VENDORS: [string, number][] = [
  ['Okta', 0], ['Auth0', 0], ['JumpCloud', 0], ['Clerk', 1], ['Firebase Auth', 1], ['Vault', 2], ['AWS KMS', 2],
  ['Doppler', 2], ['Datadog', 3], ['New Relic', 3], ['Grafana Cloud', 3], ['Splunk', 3], ['Sentry', 4], ['Rollbar', 4],
  ['LaunchDarkly', 5], ['Split', 5], ['Amplitude', 6], ['Mixpanel', 6], ['Heap', 6], ['Segment', 7], ['RudderStack', 7],
  ['GitHub', 8], ['GitLab', 8], ['Bitbucket', 8], ['CircleCI', 9], ['Buildkite', 9], ['Docker Hub', 10], ['JFrog', 10],
  ['Vercel', 11], ['Netlify', 11], ['Heroku', 11], ['Fly.io', 11], ['Supabase', 12], ['Firebase', 12], ['Confluent', 13],
  ['Redpanda', 13], ['Portkey', 14], ['OpenRouter', 14], ['Zapier', 15], ['Make', 15], ['n8n cloud', 15],
  ['Chargebee', 16], ['Metronome', 16], ['Stripe Billing', 16], ['Shopify', 17], ['BigCommerce', 17], ['DocuSign', 18],
  ['Dropbox Sign', 18], ['Carta', 19], ['Pulley', 19], ['DocSend', 20], ['iDeals', 20], ['PartnerStack', 21],
  ['Rewardful', 21], ['Statsig', 22], ['Optimizely', 22], ['Tailscale', 23], ['CF Access', 23], ['Algolia', 24],
  ['Elastic Cloud', 24], ['Pinecone', 25], ['Weaviate', 25], ['Vanta', 26], ['Drata', 26], ['Salesforce', 27],
  ['HubSpot CRM', 27], ['Pipedrive', 27], ['HubSpot Marketing', 28], ['Mailchimp', 28], ['Klaviyo', 28], ['Linear', 29],
  ['Asana', 29], ['Jira', 29], ['Monday', 29], ['Notion', 30], ['Confluence', 30], ['Zendesk', 31], ['Intercom', 31],
  ['Front', 31], ['SendGrid', 32], ['Twilio', 32], ['Customer.io', 32], ['PagerDuty', 33], ['Statuspage', 33],
  ['Opsgenie', 33], ['QuickBooks', 34], ['Bill.com', 34], ['Figma', 35], ['Canva', 35], ['Adobe CC', 35], ['Zoom', 36],
  ['Calendly', 36], ['Loom', 36], ['Google Workspace', 37], ['Microsoft 365', 37], ['Dropbox', 37], ['Gusto', 38],
  ['Rippling', 38], ['Deel', 38], ['Stripe', 39], ['Braintree', 39], ['NetSuite', 40], ['WordPress VIP', 40],
  ['Contentful', 40], ['OpenAI API', 41], ['Anthropic API', 41], ['Azure OpenAI', 41],
]

const SEAMS = [
  phrase('auth bridges'), phrase('webhooks'), phrase('data sync'), phrase('billing reconciliation'), phrase('entitlements'), phrase('audit exports'),
  phrase('pipelines'), phrase('vendor o11y'), phrase('incident routing'), phrase('schema transforms'), phrase('secret rotation'), phrase('API migrations'),
  phrase('identity lifecycle'), phrase('model fallbacks'), phrase('security reviews'),
]

const SECOND_ORDER = [
  phrase('SSO price premiums'), phrase('per-vendor security reviews'), phrase('DPAs'), phrase('procurement cycles'), phrase('duplicate observability'),
  phrase('license reclamation'), phrase('credential sprawl'), phrase('integration attack surface'), phrase('onboarding speed'), phrase('unified policy'),
  phrase('common metering'), phrase('model portability'), phrase('lock-in exposure'), phrase('air-gapped deployment'), phrase('incident response speed'),
  phrase('fewer failure domains'),
]

const money = (n: number) => {
  const a = Math.abs(n)
  const sign = n < 0 ? '−' : ''
  if (a >= 1e6) return `${sign}$${(a / 1e6).toFixed(3).replace(/\.?0+$/, '')}M`
  return `${sign}$${Math.round(a / 1e3).toLocaleString('en-US')}k`
}
const dollars = (n: number) =>
  `${n < 0 ? '−' : ''}$${Math.round(Math.abs(n)).toLocaleString('en-US')}`

export default function CalculatorPage() {
  const { t } = useI18n()
  const [E, setE] = useState(100)
  const [Dp, setDp] = useState(30)
  const [cloud, setCloud] = useState(15) // $k / month
  const [infraPct, setInfraPct] = useState(60)
  const [glueFte, setGlueFte] = useState(1.5)
  const [opsFte, setOpsFte] = useState(0.5)

  // The three deductions. Default 0 means "not included until entered" — the
  // fully-adjusted tier stays explicitly incomplete rather than quietly equal
  // to the run rate.
  const [retained, setRetained] = useState(0)
  const [fee, setFee] = useState(0)
  const [migration, setMigration] = useState(0)
  const [migYears, setMigYears] = useState(3)

  const [cov, setCov] = useState<Cov[]>(() => ROWS.map((r) => r.cov))
  const [price, setPrice] = useState<Record<number, number>>({}) // user overrides, $k
  const [von, setVon] = useState<boolean[]>(() => VENDORS.map(() => true))

  // AI sub-calculator — off by default so the headline stays the analyst's
  // figure until the user prices their own bill.
  const [aiOpen, setAiOpen] = useState(false)
  const [aiOn, setAiOn] = useState(false)
  const [ai, setAi] = useState({
    spend: 10, // $k / month
    routable: 60, // % of addressable spend that can move to a cheaper model
    selfHost: 50, // % of routed spend that can run on Zen
    ensoSave: 55, // % saved by routing alone
    zenCost: 12, // Zen cost as % of frontier price
    frontier: 25, // % that must stay frontier — pass-through, never counted
    overhead: 10, // eval + fallback overhead against gross saving
    gpuUtil: 70, // % GPU utilization
    batch: 40, // % of self-hosted work that is batch
  })

  const D = Math.round((E * Dp) / 100)

  const aiSaving = useMemo(() => {
    const annual = ai.spend * 1000 * 12
    const passthrough = annual * (ai.frontier / 100)
    const addressable = annual - passthrough
    const routed = addressable * (ai.routable / 100)
    const hosted = routed * (ai.selfHost / 100)
    const routedOnly = routed - hosted
    // Low utilization raises effective self-hosted unit cost; batch work lowers it.
    const zenRatio = (ai.zenCost / 100) * (70 / Math.max(ai.gpuUtil, 1)) * (1 - 0.25 * (ai.batch / 100))
    const gross = hosted * Math.max(1 - zenRatio, 0) + routedOnly * (ai.ensoSave / 100)
    return Math.max(gross * (1 - ai.overhead / 100), 0)
  }, [ai])

  const on = useMemo(
    () => ROWS.map((_, i) => VENDORS.some(([, c], k) => c === i && von[k])),
    [von],
  )

  const value = useMemo(
    () =>
      ROWS.map((r, i) => {
        if (price[i] !== undefined) return price[i] * 1000
        if (i === AI_ROW && aiOn) return aiSaving
        const factor = r.basis === 's' ? E / REF_E : r.basis === 'e' ? D / REF_D : 1
        return r.k * 1000 * factor
      }),
    [price, aiOn, aiSaving, E, D],
  )

  const software = useMemo(
    () => value.reduce((sum, v, i) => (on[i] ? sum + v * WEIGHT[cov[i]] : sum), 0),
    [value, on, cov],
  )

  const infra = cloud * 1000 * 12 * (infraPct / 100)
  const glue = glueFte * FTE
  const ops = opsFte * FTE
  const gross = software + infra + glue
  const runRate = gross - ops
  const amortized = migration > 0 ? migration / Math.max(migYears, 1) : 0
  const adjusted = runRate - retained - fee - amortized
  const hasDeductions = retained > 0 || fee > 0 || migration > 0
  const vendorCount = von.filter(Boolean).length

  const cycleCov = (i: number) =>
    setCov((c) => {
      const next = [...c]
      next[i] = COV_CYCLE[(COV_CYCLE.indexOf(c[i]) + 1) % COV_CYCLE.length]
      return next
    })

  const toggleRow = (i: number, checked: boolean) =>
    setVon((v) => v.map((s, k) => (VENDORS[k][1] === i ? checked : s)))

  const setAllVendors = (v: boolean) => setVon(VENDORS.map(() => v))

  const reset = () => {
    setCov(ROWS.map((r) => r.cov))
    setPrice({})
    setVon(VENDORS.map(() => true))
    setAiOn(false)
  }

  const num = (id: string, v: number, set: (n: number) => void, step = 1000) => (
    <Field id={id} min={0} step={step} value={v || ''} placeholder="0" onChange={(n) => set(n)} />
  )

  return (
    <YStack bg="var(--background)" $platform-web={{ color: 'var(--foreground)', lineHeight: '1.5' }}>
      <Fold
        label="Hanzo True Savings"
        title="Price the assembly tax."
        lede="It models operating expenses a company can eliminate, reduce, or reclaim."
      >
        {/* Your AI bill three ways, read from the price list when the page opens:
            the first thing to use, under the words at the page's full measure. */}
        <Savings />
      </Fold>
      <YStack width="100%" maxW="72rem" mx="auto" pt="2.5rem" px="1.25rem" pb="5rem" gap="2rem">
        <Card render="section" accent>
          <H2>{t('Reference deployment — Hanzo runs on Hanzo')}</H2>
          <Note>
            {t('Fully off GCP · Hanzo-managed infrastructure · AI, cloud, identity, observability, deploy, storage and business-ops native · eligible AI routed through Enso and self-hosted Zen · {consolidated} · ~90% lower compute and eligible-inference costs in selected workloads.', {
              consolidated: <B>{t('107 vendor and managed-service dependencies consolidated into one plane')}</B>,
            })}
          </Note>
          <Label>{t('Founder-attested.')}</Label>
        </Card>


        <YStack render="section">
          <H2>{t('Your deployment')}</H2>
          <Controls>
            <Range id="ts-e" label={t('Employees')} shows={E} min={10} max={2000} step={10} value={E} onChange={setE} />
            <Range id="ts-d" label={t('Engineers')} shows={`${Dp}% (${D})`} min={10} max={60} step={5} value={Dp} onChange={setDp} />
            <Range id="ts-c" label={t('Cloud bill / month')} shows={`$${cloud}k`} min={0} max={250} step={5} value={cloud} onChange={setCloud} />
            <Range id="ts-g" label={t('Integration-glue FTEs')} shows={glueFte} min={0} max={20} step={0.5} value={glueFte} onChange={setGlueFte} />
            <Range id="ts-o" label={t('Platform-ops FTEs (running Hanzo)')} shows={opsFte} min={0} max={6} step={0.5} value={opsFte} onChange={setOpsFte} />
            <Range id="ts-i" label={t('Infrastructure delta')} shows={`${infraPct}%`} min={0} max={90} step={5} value={infraPct} onChange={setInfraPct} />
          </Controls>
        </YStack>

        <YStack render="section">
          <H2>{t('Deductions — not included until entered')}</H2>
          <Controls>
            <Card>
              <Caption id="ts-r">{t('Retained vendor spending ($/yr)')}</Caption>
              {num('ts-r', retained, setRetained)}
            </Card>
            <Card>
              <Caption id="ts-f">{t('Hanzo managed / support fee ($/yr)')}</Caption>
              {num('ts-f', fee, setFee)}
            </Card>
            <Card>
              <Caption id="ts-m">{t('One-time migration cost ($)')}</Caption>
              {num('ts-m', migration, setMigration)}
            </Card>
            <Range id="ts-y" label={t('Amortized over')} shows={t('{n} yr', { n: migYears })} min={1} max={5} step={1} value={migYears} onChange={setMigYears} />
          </Controls>
        </YStack>

        <YStack render="section">
          <H2>{t('Results')}</H2>
          <View display="grid" gridTemplateColumns="repeat(auto-fit, minmax(15rem, 1fr))" gap="0.9rem">
            <Tier label={t('1 · Gross addressable savings')} note={t('Software + infrastructure + glue, before any deduction.')}>
              <Big>{money(gross)}</Big>
            </Tier>
            <Tier lead label={t('2 · Annual run-rate savings')} note={t('Gross − Hanzo operating labor. This is the headline.')}>
              <Big>{money(runRate)}</Big>
            </Tier>
            <Tier label={t('3 · Fully adjusted annual savings')} note={t('Run-rate − retained vendors − Hanzo fees − amortized migration.')}>
              {hasDeductions ? (
                <Big>{money(adjusted)}</Big>
              ) : (
                <Text display="block" py="0.5rem" fontSize="1rem" lineHeight="1.2rem" color={WARN}>
                  {t('Customer input required')}
                </Text>
              )}
            </Tier>
            <Tier label={t('4 · Three-year economic value')} note={t('Fully adjusted × 3, with migration amortized across the horizon.')}>
              <Big>{money(adjusted * 3)}</Big>
            </Tier>
          </View>

          <View display="grid" gridTemplateColumns="repeat(auto-fit, minmax(11rem, 1fr))" gap="0.75rem" mt="0.9rem">
            <Part label={t('Software replaced (selected rows)')}>{money(software)}</Part>
            <Part label={t('Infrastructure delta')}>{money(infra)}</Part>
            <Part label={t('Glue engineering reclaimed')}>{money(glue)}</Part>
            <Part label={t('Cost of operating Hanzo')} cost>
              −{money(ops)}
            </Part>
            <Part label={t('Per employee / yr (run-rate)')}>{dollars(runRate / Math.max(E, 1))}</Part>
            <Part label={t('≈ senior engineers funded')}>{(runRate / FTE).toFixed(1)}</Part>
            <Part label={t('Vendors collapsed')}>{vendorCount} → 1</Part>
          </View>

          <Text render="p" display="flex" flexWrap="wrap" gap="0.4rem" mt="0.9rem" fontSize="0.8rem" lineHeight={lh(0.8)} color={DIM}>
            <Code>gross = software + infra + glue</Code> · <Code>run-rate = gross − ops</Code> ·{' '}
            <Code>adjusted = run-rate − retained − fees − migration ÷ years</Code>
          </Text>
          <Text render="p" display="block" mt="0.5rem" fontSize="0.85rem" lineHeight={lh(0.85)} color={WARN}>
            {t('Do not present {amount} as fully net until the final three deductions are entered.', { amount: money(runRate) })}
          </Text>

          <Text render="p" display="block" mt="1rem" maxW="min(80ch, 100%)" borderLeftWidth={2} borderColor="$edge" pl="0.9rem" fontSize="0.8rem" lineHeight={lh(0.8)} color={DIM}>
            {t('Hanzo True Savings is an interactive operating-cost model, not a quote, guarantee, audit, or promise of results. Default prices are editable estimates based on representative technology stacks. Actual savings depend on existing contracts, usage, architecture, migration requirements, retained vendors, staffing, workload eligibility, and Hanzo deployment choices. Hanzo’s internal case-study figures are management-attested unless explicitly marked independently verified.')}
          </Text>
        </YStack>

        <YStack render="section">
          <H2>{t('Click everything you pay for')}</H2>
          <Note>
            {t('Every vendor maps to a line in the table. Tap the ones on your bill — the totals and the {counter} counter follow.', {
              counter: <B>{t('vendors → 1')}</B>,
            })}{' '}
            <Toggle onPress={() => setAllVendors(true)}>{t('select all')}</Toggle>{' '}
            <Toggle onPress={() => setAllVendors(false)}>{t('clear')}</Toggle>
          </Note>
          <XStack flexWrap="wrap" gap="0.35rem" mt="0.7rem">
            {VENDORS.map(([name], k) => (
              <Toggle key={name + k} pressed={von[k]} onPress={() => setVon((v) => v.map((s, j) => (j === k ? !s : s)))}>
                {name}
              </Toggle>
            ))}
          </XStack>
        </YStack>

        <YStack render="section">
          <H2>{t('Category by category')}</H2>
          <Note>
            {t('Two axes, kept separate. {coverage} carries weight and is clickable — full 100%, partial 50%, experimental 25%, roadmap 0%. {evidence} carries no weight. A service can have full coverage while still management-attested. Separating the axes prevents an attestation from being presented as verification.', {
              coverage: <B>{t('Coverage')}</B>,
              evidence: <B>{t('Evidence')}</B>,
            })}
          </Note>
          <Note>
            {t('Prices are the analyst defaults at the reference deployment (100 employees, 30% engineers) and are editable — type over any of them. Untouched rows scale on their billing basis: per-seat with employees, per-engineer with engineers, platform fees not at all.')}{' '}
            <Toggle onPress={reset}>{t('Reset to analyst defaults')}</Toggle>
          </Note>
          <View overflowX="auto" bg="$panel" borderWidth={1} borderColor="$edge" mt="0.8rem">
            <Text render="table" width="100%" fontSize="0.85rem" lineHeight={lh(0.85)} color="$ink" $platform-web={{ display: 'table', borderCollapse: 'collapse' }}>
              <thead>
                <tr>
                  <Th label={t('Include')} />
                  <Th>{t('Category')}</Th>
                  <Th>{t('Replaces (typical)')}</Th>
                  <Th>{t('Hanzo services')}</Th>
                  <Th>{t('Coverage')}</Th>
                  <Th>{t('Evidence')}</Th>
                  <Th right>{t('$k / yr')}</Th>
                </tr>
              </thead>
              <tbody>
                {ROWS.map((r, i) => {
                  const off = !on[i]
                  const last = i === ROWS.length - 1 && !aiOpen
                  return (
                    <tr key={r.name}>
                      <Td off={off} last={last}>
                        <input type="checkbox" checked={on[i]} aria-label={t('Include {name}', { name: t(r.name) })} onChange={(e) => toggleRow(i, e.target.checked)} />
                      </Td>
                      <Td off={off} last={last}>
                        {t(r.name)}
                        {i === AI_ROW && (
                          <>
                            {' '}
                            <Text
                              render={<button type="button" aria-expanded={aiOpen} onClick={() => setAiOpen((o) => !o)} />}
                              py={0}
                              px="0.2rem"
                              bg="transparent"
                              borderWidth={0}
                              fontSize="0.68rem" lineHeight={lh(0.68)}
                              letterSpacing={0.55}
                              textTransform="uppercase"
                              textDecorationLine="underline"
                              color={SAVE}
                              cursor="pointer"
                            >
                              {aiOpen ? t('hide') : t('sub-calculator')}
                            </Text>
                          </>
                        )}
                      </Td>
                      <Td off={off} last={last}>
                        {t(r.replaces)}
                      </Td>
                      <Td off={off} last={last} mono>
                        {r.hanzo}
                      </Td>
                      <Td off={off} last={last}>
                        <Chip ink={COV_INK[cov[i]]} title={t('Click to regrade coverage')} onPress={() => cycleCov(i)}>
                          {t(COV_LABEL[cov[i]])}
                        </Chip>
                      </Td>
                      <Td off={off} last={last}>
                        <Chip ink={EV_INK[r.ev]}>{t(EV_LABEL[r.ev])}</Chip>
                      </Td>
                      <Td off={off} last={last} right>
                        <Field
                          id={`ts-price-${i}`}
                          label={t('Annual estimate for {name} in thousands', { name: t(r.name) })}
                          min={0}
                          value={Math.round(value[i] / 1000)}
                          narrow
                          onChange={(n) => setPrice((p) => ({ ...p, [i]: n }))}
                        />
                        {WEIGHT[cov[i]] < 1 && (
                          <Text ml="0.3rem" fontFamily="$mono" fontSize="0.72rem" lineHeight={lh(0.72)} color={WARN}>
                            ×{WEIGHT[cov[i]]}
                          </Text>
                        )}
                      </Td>
                    </tr>
                  )
                })}
                {aiOpen && (
                  <tr>
                    <Td colSpan={7} last wrap ground>
                      <Text render="h3" display="block" mb="0.4rem" fontSize="0.95rem" lineHeight={lh(0.95)} fontWeight="600" color="$ink">
                        {t('AI sub-calculator')}
                      </Text>
                      <Note>
                        {t('Hanzo’s current deployment reports reductions approaching 90% for selected workloads routed to lower-cost or self-hosted models. Enter your own eligible workload percentage rather than applying 90% to the entire AI bill. Hanzo routes {models}, but model count is not the economic claim — the control plane is.', {
                          models: <Models />,
                        })}
                      </Note>
                      <Controls my={11}>
                        {([
                          ['spend', t('AI spend / month ($k)'), 0, 500, 1],
                          ['frontier', t('Must stay frontier (%)'), 0, 100, 5],
                          ['routable', t('Routable to cheaper models (%)'), 0, 100, 5],
                          ['selfHost', t('Of routed, self-hostable (%)'), 0, 100, 5],
                          ['ensoSave', t('Enso routing saving (%)'), 0, 90, 5],
                          ['zenCost', t('Zen cost vs frontier (%)'), 1, 100, 1],
                          ['gpuUtil', t('GPU utilization (%)'), 10, 100, 5],
                          ['batch', t('Batch vs interactive mix (%)'), 0, 100, 5],
                          ['overhead', t('Eval / fallback overhead (%)'), 0, 50, 5],
                        ] as const).map(([key, label, min, max, step]) => (
                          <Range
                            key={key}
                            id={`ts-ai-${key}`}
                            label={label}
                            shows={ai[key]}
                            min={min}
                            max={max}
                            step={step}
                            value={ai[key]}
                            onChange={(n) => setAi((a) => ({ ...a, [key]: n }))}
                          />
                        ))}
                      </Controls>
                      <Note>
                        {t('Computed eligible saving {saving} / yr against an analyst default of {analyst}. Frontier pass-through is never counted as a saving.', {
                          saving: <B mono>{money(aiSaving)}</B>,
                          analyst: <B mono>{money(ROWS[AI_ROW].k * 1000)}</B>,
                        })}{' '}
                        <Toggle pressed={aiOn} onPress={() => setAiOn((v) => !v)}>
                          {aiOn ? t('using computed figure') : t('use computed figure')}
                        </Toggle>
                      </Note>
                    </Td>
                  </tr>
                )}
              </tbody>
              <tfoot>
                <tr>
                  <Td colSpan={6} foot>
                    {t('Weighted total — replaced software')}
                  </Td>
                  <Td right foot mono>
                    {money(software)}
                  </Td>
                </tr>
              </tfoot>
            </Text>
          </View>
        </YStack>

        <YStack render="section">
          <H2>{t('Infrastructure delta')}</H2>
          <Note>
            {t('The {pct}% delta above is a simplified default and a {assumption}. The egress anchor is real — DigitalOcean at $0.01/GiB against an AWS example at $0.09/GB — but it supports an egress comparison; it does not prove {pct}% for every workload. A full model would price provider, compute, GPU, database, storage, egress, observability, support, existing commitments, target Hanzo cost and migration overlap separately.', {
              pct: infraPct,
              assumption: <B>{t('user-controlled assumption, not a universal benchmark')}</B>,
            })}
          </Note>
        </YStack>

        <YStack render="section">
          <H2>{t('Glue engineering')}</H2>
          <Note>
            {t('The seams a vendor stack requires someone to own: {seams}. The default of 1.5 FTE at ${fte}k fully loaded is conservative for a 30+ vendor estate, and 0.5 FTE of platform operations is subtracted on the other side.', {
              seams: SEAMS.map((s) => t(s)).join(', '),
              fte: (FTE / 1000).toFixed(0),
            })}
          </Note>
          <Label>{t('Do not say Hanzo eliminates engineering. Hanzo redirects it from vendor seams to product.')}</Label>
        </YStack>

        <YStack render="section">
          <H2>{t('The bill is the cheap half')}</H2>
          <Note>
            {t('Everything above prices what you stop {paying}. It ignores what you would have to {build} to own the whole thing yourself. Public anchors: Auth0 acquired for ~$6.5B · Datadog ~$1.55B of 2025 R&D · Zapier 800+ people and 9,000+ integrations. These are not additive valuations; they show each category is a substantial engineering domain. A replacement-cost study of the full repository estate is {analysis} — no number will appear here until that report lands.', {
              paying: <B>{t('paying')}</B>,
              build: <B>{t('build')}</B>,
              analysis: <B>{t('under analysis')}</B>,
            })}
          </Note>
        </YStack>

        <YStack render="section">
          <H2>{t('Exclusions — what this model never counts')}</H2>
          <Note>
            {t('Card interchange and network fees (the payment row counts PSP markup only) · frontier model pass-through, unless the workload is routed, distilled or self-hosted · deep vertical software (clinical, CAD, EDA, airline operations, industrial control, scientific instruments, jurisdiction-specific record systems) · migration coexistence, where both stacks run at once · retained vendors, since every row is independently deselectable.')}
          </Note>
        </YStack>

        <YStack render="section">
          <H2>{t('Market context')}</H2>
          <Note>
            {t('Okta 2026: 98 applications on average, 259 at companies with 2,000+ employees, 72 below that. Zylo 2026 SaaS Management Index: a median of $9,455 of SaaS spend per employee, with 36% of licenses unused. The ${software}k software default at the reference deployment works out to $6,130 per employee — below Zylo’s enterprise-skewed median, so the model is conservative relative to the benchmark. None of this implies all SaaS spend is recoverable.', {
              software: Math.round(613),
            })}
          </Note>
        </YStack>

        <YStack render="section">
          <H2>{t('Second-order benefits — real, unpriced')}</H2>
          <Note>{SECOND_ORDER.map((s) => t(s)).join(' · ')}.</Note>
          <Label>{t('Material, but outside the headline until a defensible measurement exists.')}</Label>
        </YStack>

        <Card render="section" accent>
          <H2>{t('Replace the stack, not the capability.')}</H2>
          <Note>
            {t('100+ capabilities · {models} · one identity · one API · one platform · self-host or managed.', { models: <Models /> })}
          </Note>
          <Lead>{t('Select your current stack and price the assembly tax.')}</Lead>
        </Card>
      </YStack>
    </YStack>
  )
}

/** The page's one rhythm: a line is half again its size. */
const lh = (rem: number) => `${+(rem * 1.5).toFixed(4)}rem` as const

/* ── the page's parts ──────────────────────────────────────────────────────
   The model reads in the site's own tokens: a saving in the success hue, a
   cost in the error hue, a caveat in the secondary ink — so it follows the
   theme the reader picked, with no palette of its own. */

const SAVE = '$good'
const COST = '$bad'
const WARN = 'var(--text-secondary)'
const DIM = 'var(--muted-foreground)'
const GREY = 'var(--text-tertiary)'
/** The tint a highlighted tier and a pressed vendor sit on. */
const SOFT = '$good/12'

const COV_INK: Record<Cov, ChipInk> = { full: SAVE, partial: WARN, experimental: COST, roadmap: GREY }
const EV_INK: Record<Ev, ChipInk> = { verified: SAVE, gap: COST, internal: GREY, repo: GREY, attested: WARN }

type ChipInk = typeof SAVE | typeof COST | typeof WARN | typeof GREY

function H2({ children }: { children: ReactNode }) {
  return (
    <Text render="h2" display="block" mb="0.5rem" fontSize="1.05rem" lineHeight={lh(1.05)} letterSpacing={-0.17} fontWeight="600" color="var(--foreground)">
      {children}
    </Text>
  )
}

function Lead({ children }: { children: ReactNode }) {
  return (
    <Text render="p" display="block" mt="0.4rem" fontSize="1.15rem" lineHeight={lh(1.15)} color={SAVE}>
      {children}
    </Text>
  )
}

function Note({ children }: { children: ReactNode }) {
  return (
    <Text render="p" display="block" maxW="min(76ch, 100%)" fontSize="0.88rem" lineHeight={lh(0.88)} color={DIM}>
      {children}
    </Text>
  )
}

/** The emphasis inside a note: full ink, and the mono face for a figure. */
function B({ mono, children }: { mono?: boolean; children: ReactNode }) {
  return (
    <Text render="b" lineHeight="unset" color="$ink" fontFamily={mono ? '$mono' : undefined} $platform-web={mono ? { fontVariantNumeric: 'tabular-nums' } : undefined}>
      {children}
    </Text>
  )
}

function Code({ children }: { children: ReactNode }) {
  return (
    <Text render="code" lineHeight="unset" fontFamily="$mono" fontSize="0.66rem" color="$ink">
      {children}
    </Text>
  )
}

function Label({ children }: { children: ReactNode }) {
  return (
    <Text render="p" display="block" mt="0.5rem" fontSize="0.72rem" lineHeight={lh(0.72)} letterSpacing={1.04} textTransform="uppercase" color={WARN}>
      {children}
    </Text>
  )
}

/** A panel; `accent` rules its left edge in the saving hue. */
function Card({ render, accent, children }: { render?: 'section'; accent?: boolean; children: ReactNode }) {
  return (
    <YStack
      render={render}
      bg="$panel"
      borderWidth={1}
      borderColor="$edge"
      borderLeftWidth={accent ? 3 : 1}
      borderLeftColor={accent ? SAVE : '$edge'}
      py="0.8rem"
      px="1rem"
      gap="0.4rem"
    >
      {children}
    </YStack>
  )
}

/** The grid the controls sit in: as many 14rem columns as fit. */
function Controls({ my, children }: { my?: number; children: ReactNode }) {
  return (
    <View display="grid" gridTemplateColumns="repeat(auto-fit, minmax(14rem, 1fr))" gap="0.9rem" my={my}>
      {children}
    </View>
  )
}

/** A control's caption, in small caps; `shows` is its value at the right. */
function Caption({ id, shows, children }: { id: string; shows?: ReactNode; children: ReactNode }) {
  return (
    <Text
      render={<label htmlFor={id} />}
      display="flex"
      justify="space-between"
      gap="0.5rem"
      fontSize="0.7rem" lineHeight={lh(0.7)}
      letterSpacing={1.01}
      textTransform="uppercase"
      color={DIM}
    >
      <Text lineHeight="unset" color="inherit">{children}</Text>
      {shows !== undefined ? (
        <Text render="output" lineHeight="unset" fontFamily="$mono" textTransform="none" letterSpacing={0} color="$ink">
          {shows}
        </Text>
      ) : null}
    </Text>
  )
}

/** A slider in a card, its caption above it. */
function Range({
  id,
  label,
  shows,
  min,
  max,
  step,
  value,
  onChange,
}: {
  id: string
  label: string
  shows: ReactNode
  min: number
  max: number
  step: number
  value: number
  onChange: (n: number) => void
}) {
  return (
    <Card>
      <Caption id={id} shows={shows}>
        {label}
      </Caption>
      <View
        render={<input id={id} type="range" min={min} max={max} step={step} value={value} onChange={(e) => onChange(+e.target.value)} />}
        width="100%"
        $platform-web={{ accentColor: 'var(--state-success)' }}
      />
    </Card>
  )
}

/** A number field; `narrow` for a price cell in the table. */
function Field({
  id,
  label,
  min,
  step,
  value,
  placeholder,
  narrow,
  onChange,
}: {
  id: string
  label?: string
  min: number
  step?: number
  value: number | ''
  placeholder?: string
  narrow?: boolean
  onChange: (n: number) => void
}) {
  return (
    <Text
      render={
        <input
          id={id}
          type="number"
          aria-label={label}
          min={min}
          step={step}
          value={value}
          placeholder={placeholder}
          onChange={(e) => onChange(Math.max(Number(e.target.value) || 0, 0))}
        />
      }
      display={narrow ? undefined : 'block'}
      width={narrow ? '5.5rem' : '100%'}
      py="0.3rem"
      px="0.45rem"
      text={narrow ? 'right' : undefined}
      bg="var(--background)"
      borderWidth={1}
      borderColor="$edge"
      fontFamily="$mono"
      fontSize="0.85rem" lineHeight={lh(0.85)}
      color="$ink"
    />
  )
}

/** One of the four tiers; `lead` is the headline, on the saving tint. */
function Tier({ label, note, lead, children }: { label: string; note: string; lead?: boolean; children: ReactNode }) {
  return (
    <YStack bg={lead ? SOFT : '$panel'} borderWidth={1} borderColor={lead ? SAVE : '$edge'} py="1rem" px="1.1rem" gap="0.3rem">
      <Text fontSize="0.7rem" lineHeight={lh(0.7)} letterSpacing={1.01} textTransform="uppercase" color={DIM}>
        {label}
      </Text>
      {children}
      <Text render="small" fontSize="0.76rem" lineHeight={lh(0.76)} color={DIM}>
        {note}
      </Text>
    </YStack>
  )
}

/** A tier's figure: the saving hue, in lining mono figures, tight. */
function Big({ children }: { children: ReactNode }) {
  return (
    <Text
      display="block"
      fontFamily="$mono"
      fontSize="1.7rem"
      lineHeight="1.785rem"
      letterSpacing={-1.06}
      color={SAVE}
      $md={{ fontSize: '2.4rem', lineHeight: '2.52rem' }}
      $platform-web={{ fontVariantNumeric: 'tabular-nums' }}
    >
      {children}
    </Text>
  )
}

/** One part of the run-rate, ruled across its top in the saving hue — or the cost hue for what Hanzo costs. */
function Part({ label, cost, children }: { label: string; cost?: boolean; children: ReactNode }) {
  return (
    <YStack bg="$panel" borderWidth={1} borderColor="$edge" borderTopWidth={3} borderTopColor={cost ? COST : SAVE} py="0.7rem" px="0.9rem">
      <Text render="small" display="block" mb="0.2rem" fontSize="0.72rem" lineHeight={lh(0.72)} color={DIM}>
        {label}
      </Text>
      <Text fontFamily="$mono" fontSize="1.15rem" lineHeight={lh(1.15)} color="$ink" $platform-web={{ fontVariantNumeric: 'tabular-nums' }}>
        {children}
      </Text>
    </YStack>
  )
}

/** A vendor, or a small action set the same way; pressed reads in the saving hue on its tint. */
function Toggle({ pressed, onPress, children }: { pressed?: boolean; onPress: () => void; children: ReactNode }) {
  return (
    <Text
      render={<button type="button" aria-pressed={pressed} onClick={onPress} />}
      py="0.28rem"
      px="0.55rem"
      borderWidth={1}
      borderColor={pressed ? SAVE : '$edge'}
      bg={pressed ? SOFT : '$panel'}
      fontSize="0.78rem" lineHeight={lh(0.78)}
      color={pressed ? SAVE : '$ink'}
      cursor="pointer"
    >
      {children}
    </Text>
  )
}

/** A grade: a word in an outline, in its grade's ink; a button where the grade can be changed. */
function Chip({ ink, title, onPress, children }: { ink: ChipInk; title?: string; onPress?: () => void; children: ReactNode }) {
  return (
    <Text
      render={onPress ? <button type="button" title={title} onClick={onPress} /> : 'span'}
      py="0.12rem"
      px="0.45rem"
      borderWidth={1}
      borderColor={ink}
      bg="transparent"
      fontFamily="$body"
      fontSize="0.66rem" lineHeight={lh(0.66)}
      letterSpacing={0.53}
      textTransform="uppercase"
      whiteSpace="nowrap"
      color={ink}
      cursor={onPress ? 'pointer' : undefined}
    >
      {children}
    </Text>
  )
}

/** A table cell, stated a table cell: a gui Text is an inline box until told. */
const CELL = { '$platform-web': { display: 'table-cell' } } as const

/** A column head: small caps, held at the top while the table scrolls. */
function Th({ right, label, children }: { right?: boolean; label?: string; children?: ReactNode }) {
  return (
    <Text
      render={<th aria-label={label} />}
      {...CELL}
      position="sticky"
      t={0}
      z="var(--z-raised)"
      py="0.45rem"
      px="0.7rem"
      text={right ? 'right' : 'left'}
      whiteSpace="nowrap"
      borderBottomWidth={1}
      borderColor="$edge"
      bg="$panel"
      fontSize="0.65rem" lineHeight={lh(0.65)}
      letterSpacing={0.94}
      textTransform="uppercase"
      color={DIM}
    >
      {children}
    </Text>
  )
}

/** A body cell. `off` dims a row the reader left out; `foot` is the total under the table. */
function Td({
  right,
  mono,
  off,
  last,
  wrap,
  ground,
  foot,
  colSpan,
  children,
}: {
  right?: boolean
  mono?: boolean
  off?: boolean
  last?: boolean
  wrap?: boolean
  ground?: boolean
  foot?: boolean
  colSpan?: number
  children?: ReactNode
}) {
  return (
    <Text
      render={<td colSpan={colSpan} />}
      {...CELL}
      py={ground ? '1rem' : '0.45rem'}
      px={ground ? '1rem' : '0.7rem'}
      text={right ? 'right' : 'left'}
      whiteSpace={wrap ? 'normal' : 'nowrap'}
      borderBottomWidth={last || foot ? 0 : 1}
      borderTopWidth={foot ? 2 : 0}
      borderColor={foot ? '$ink' : '$edge'}
      bg={ground ? 'var(--background)' : undefined}
      opacity={off ? 0.42 : 1}
      fontFamily={mono ? '$mono' : undefined}
      fontSize={mono && !foot ? '0.76rem' : undefined}
      lineHeight={mono && !foot ? lh(0.76) : lh(0.85)}
      fontWeight={foot ? '700' : undefined}
      color={mono && !foot ? DIM : '$ink'}
      $platform-web={mono ? { display: 'table-cell', fontVariantNumeric: 'tabular-nums' } : CELL['$platform-web']}
    >
      {children}
    </Text>
  )
}