--- baseline/PROGRESS.md
+++ candidate/PROGRESS.md
@@ -1,19 +1,20 @@
 # Progress
 
-Status: starter repository received
+Status: vertical slice complete
 
 ## Completed
 
-- [ ] Responsive page composition
-- [ ] Filter and URL state
-- [ ] Service detail interaction
-- [ ] Accessible enquiry flow
-- [ ] Content/missing-media resilience
-- [ ] Reduced-motion treatment
-- [ ] Type check
-- [ ] Production build
+- [x] Responsive page composition
+- [x] Filter and URL state
+- [x] Service detail interaction
+- [x] Accessible enquiry flow
+- [x] Content/missing-media resilience
+- [x] Reduced-motion treatment
+- [x] Type check
+- [x] Production build
 
 ## Verification evidence
 
-Record commands and outcomes here. Keep this concise and factual.
-
+- `npm run check` — passed (`tsc -b --pretty false`).
+- `npm run build` — passed (`tsc -b && vite build`, Vite transformed 420 modules).
+- `git diff --check` — passed with no whitespace errors.

--- baseline/index.html
+++ candidate/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <meta name="description" content="Gridline Field Services keeps critical electrical and automation systems moving across Victoria." />
+    <meta name="description" content="Industrial electrical and automation field services in Victoria, Australia." />
     <title>Gridline Field Services</title>
   </head>
   <body>

--- baseline/src/App.tsx
+++ candidate/src/App.tsx
@@ -1,42 +1,448 @@
-import { content } from './content'
+import { FormEvent, MouseEvent, useEffect, useRef, useState } from 'react'
+import { motion, useReducedMotion } from 'motion/react'
+import { content, type Discipline, type Service } from './content'
+
+type FormErrors = Partial<Record<'name' | 'email' | 'projectType' | 'summary', string>>
+
+const supportedDisciplines = new Set<Discipline>(content.filters.map((filter) => filter.value))
+
+function readDiscipline(): Discipline {
+  const value = new URLSearchParams(window.location.search).get('discipline')
+  return value && supportedDisciplines.has(value as Discipline) ? value as Discipline : 'all'
+}
+
+function ArrowIcon() {
+  return (
+    <svg viewBox="0 0 18 18" aria-hidden="true">
+      <path d="M3 9h11M10 4l5 5-5 5" />
+    </svg>
+  )
+}
+
+function Media({ service, className = '', includeTestHook = true }: { service: Service; className?: string; includeTestHook?: boolean }) {
+  if (!service.image) {
+    return (
+      <div className={`media-fallback ${className}`} data-testid={includeTestHook ? 'media-fallback' : undefined} role="img" aria-label={service.imageAlt}>
+        <span className="media-fallback__signal" aria-hidden="true">
+          <i />
+          <i />
+          <i />
+          <i />
+          <i />
+        </span>
+        <span>{content.interface.mediaFallback}</span>
+        <strong>{service.title}</strong>
+      </div>
+    )
+  }
+
+  return <img className={className} src={service.image} alt={service.imageAlt} />
+}
 
 function App() {
+  const [menuOpen, setMenuOpen] = useState(false)
+  const [discipline, setDiscipline] = useState<Discipline>(readDiscipline)
+  const [selectedId, setSelectedId] = useState(content.services[0].id)
+  const [submitted, setSubmitted] = useState(false)
+  const [formErrors, setFormErrors] = useState<FormErrors>({})
+  const reducedMotion = useReducedMotion()
+  const dialogRef = useRef<HTMLDialogElement>(null)
+  const menuButtonRef = useRef<HTMLButtonElement>(null)
+  const detailRef = useRef<HTMLElement>(null)
+  const openerRef = useRef<HTMLButtonElement | null>(null)
+  const nameRef = useRef<HTMLInputElement>(null)
+  const emailRef = useRef<HTMLInputElement>(null)
+  const projectTypeRef = useRef<HTMLSelectElement>(null)
+  const summaryRef = useRef<HTMLTextAreaElement>(null)
+
+  useEffect(() => {
+    const syncFromLocation = () => {
+      const nextDiscipline = readDiscipline()
+      const url = new URL(window.location.href)
+
+      if (url.searchParams.get('discipline') !== nextDiscipline) {
+        url.searchParams.set('discipline', nextDiscipline)
+        window.history.replaceState(null, '', url)
+      }
+
+      setDiscipline(nextDiscipline)
+    }
+
+    syncFromLocation()
+    window.addEventListener('popstate', syncFromLocation)
+    return () => window.removeEventListener('popstate', syncFromLocation)
+  }, [])
+
+  useEffect(() => {
+    if (!menuOpen) return
+
+    const closeOnEscape = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        setMenuOpen(false)
+        menuButtonRef.current?.focus()
+      }
+    }
+
+    window.addEventListener('keydown', closeOnEscape)
+    return () => window.removeEventListener('keydown', closeOnEscape)
+  }, [menuOpen])
+
+  const visibleServices = discipline === 'all'
+    ? content.services
+    : content.services.filter((service) => service.discipline === discipline)
+  const selectedService = visibleServices.find((service) => service.id === selectedId) ?? visibleServices[0]
+
+  const updateDiscipline = (nextDiscipline: Discipline) => {
+    if (nextDiscipline === discipline) return
+
+    const url = new URL(window.location.href)
+    url.searchParams.set('discipline', nextDiscipline)
+    window.history.pushState(null, '', url)
+    setDiscipline(nextDiscipline)
+  }
+
+  const selectService = (serviceId: string) => {
+    setSelectedId(serviceId)
+
+    if (window.matchMedia('(max-width: 899px)').matches) {
+      window.requestAnimationFrame(() => detailRef.current?.scrollIntoView({ behavior: reducedMotion ? 'auto' : 'smooth', block: 'start' }))
+    }
+  }
+
+  const openDialog = (event: MouseEvent<HTMLButtonElement>) => {
+    openerRef.current = event.currentTarget
+    setMenuOpen(false)
+    dialogRef.current?.showModal()
+  }
+
+  const closeDialog = () => dialogRef.current?.close()
+
+  const handleDialogClose = () => {
+    setSubmitted(false)
+    setFormErrors({})
+    openerRef.current?.focus()
+  }
+
+  const handleSubmit = (event: FormEvent<HTMLFormElement>) => {
+    event.preventDefault()
+    const data = new FormData(event.currentTarget)
+    const name = String(data.get('name') ?? '').trim()
+    const email = String(data.get('email') ?? '').trim()
+    const projectType = String(data.get('projectType') ?? '')
+    const summary = String(data.get('summary') ?? '').trim()
+    const errors: FormErrors = {}
+
+    if (!name) errors.name = content.form.errors.name
+    if (!email) {
+      errors.email = content.form.errors.emailRequired
+    } else if (!emailRef.current?.validity.valid) {
+      errors.email = content.form.errors.emailInvalid
+    }
+    if (!projectType) errors.projectType = content.form.errors.projectType
+    if (!summary) {
+      errors.summary = content.form.errors.summaryRequired
+    } else if (summary.replace(/\s/g, '').length < 20) {
+      errors.summary = content.form.errors.summaryLength
+    }
+
+    setFormErrors(errors)
+
+    const firstInvalid = (['name', 'email', 'projectType', 'summary'] as const).find((field) => errors[field])
+    if (firstInvalid) {
+      const fieldRefs = {
+        name: nameRef,
+        email: emailRef,
+        projectType: projectTypeRef,
+        summary: summaryRef,
+      }
+      fieldRefs[firstInvalid].current?.focus()
+      return
+    }
+
+    setSubmitted(true)
+  }
+
+  const closeMobileMenu = () => setMenuOpen(false)
+
   return (
     <div className="site-shell">
       <header className="site-header">
-        <a className="brand" href="#top" aria-label="Gridline Field Services home">
-          <strong>{content.brand}</strong>
-          <span>{content.descriptor}</span>
-        </a>
-        <nav aria-label="Primary navigation">
-          {content.nav.map((item) => <a key={item.href} href={item.href}>{item.label}</a>)}
-        </nav>
-        <button type="button" data-testid="scope-review-open">{content.hero.primaryAction}</button>
+        <div className="site-header__inner">
+          <a className="brand" href="#top" aria-label={`${content.brand} ${content.descriptor}`}>
+            <span className="brand__mark" aria-hidden="true"><i /><i /><i /></span>
+            <span className="brand__type">
+              <strong>{content.brand}</strong>
+              <span>{content.descriptor}</span>
+            </span>
+          </a>
+
+          <nav className="desktop-nav" aria-label="Primary navigation">
+            {content.nav.map((item) => <a key={item.href} href={item.href}>{item.label}</a>)}
+          </nav>
+
+          <button className="button button--header desktop-action" type="button" data-testid="scope-review-open" onClick={openDialog}>
+            {content.hero.primaryAction}
+            <ArrowIcon />
+          </button>
+
+          <button
+            className="menu-toggle"
+            type="button"
+            aria-expanded={menuOpen}
+            aria-controls="mobile-navigation"
+            data-testid="mobile-menu-toggle"
+            onClick={() => setMenuOpen((open) => !open)}
+            ref={menuButtonRef}
+          >
+            <span>{menuOpen ? content.interface.closeMenu : content.interface.menu}</span>
+            <span className="menu-toggle__lines" aria-hidden="true"><i /><i /></span>
+          </button>
+        </div>
+
+        <div id="mobile-navigation" className="mobile-menu" data-testid="mobile-menu" hidden={!menuOpen}>
+          <nav aria-label="Mobile navigation">
+            {content.nav.map((item, index) => (
+              <a key={item.href} href={item.href} onClick={closeMobileMenu}>
+                <span>0{index + 1}</span>{item.label}
+              </a>
+            ))}
+          </nav>
+          <button className="button button--citron" type="button" data-testid="scope-review-open" onClick={openDialog}>
+            {content.hero.primaryAction}
+            <ArrowIcon />
+          </button>
+        </div>
       </header>
 
       <main id="top">
         <section className="hero">
-          <p className="eyebrow">{content.hero.eyebrow}</p>
-          <h1>{content.hero.title}</h1>
-          <p>{content.hero.body}</p>
-          <a href="#services">{content.hero.secondaryAction}</a>
+          <div className="hero__inner page-grid">
+            <div className="hero__copy">
+              <p className="eyebrow"><span />{content.hero.eyebrow}</p>
+              <h1>{content.hero.title}</h1>
+              <p className="hero__body">{content.hero.body}</p>
+              <div className="hero__actions">
+                <button className="button button--citron" type="button" data-testid="scope-review-open" onClick={openDialog}>
+                  {content.hero.primaryAction}
+                  <ArrowIcon />
+                </button>
+                <a className="text-link" href="#services">{content.hero.secondaryAction}<ArrowIcon /></a>
+              </div>
+            </div>
+
+            <figure className="hero__evidence">
+              <div className="hero__coordinates" aria-hidden="true"><span>38.0 S</span><span>144.9 E</span></div>
+              <img src={content.services[0].image ?? ''} alt={content.services[0].imageAlt} />
+              <figcaption>
+                <span className="status-light" aria-hidden="true" />
+                {content.hero.availability}
+              </figcaption>
+              <div className="hero__index" aria-hidden="true">GL / 01</div>
+            </figure>
+          </div>
+          <div className="hero__baseline" aria-hidden="true"><span>01</span><i /><span>FIELD / SYSTEM / HANDOVER</span></div>
         </section>
 
         <section id="services" className="services">
-          <p className="eyebrow">{content.servicesIntro.eyebrow}</p>
-          <h2>{content.servicesIntro.title}</h2>
-          <p>{content.servicesIntro.body}</p>
-          <div className="service-grid">
-            {content.services.map((service) => (
-              <article key={service.id} data-testid={`service-card-${service.id}`}>
-                <p>{service.discipline}</p>
-                <h3>{service.title}</h3>
-                <p>{service.summary}</p>
-              </article>
+          <div className="section-intro page-grid">
+            <p className="eyebrow"><span />{content.servicesIntro.eyebrow}</p>
+            <div>
+              <h2>{content.servicesIntro.title}</h2>
+              <p>{content.servicesIntro.body}</p>
+            </div>
+          </div>
+
+          <div className="service-toolbar">
+            <div className="filters" role="group" aria-label="Filter services by discipline">
+              {content.filters.map((filter) => (
+                <button
+                  className={filter.value === discipline ? 'is-active' : ''}
+                  key={filter.value}
+                  type="button"
+                  aria-pressed={filter.value === discipline}
+                  data-testid={`filter-${filter.value}`}
+                  onClick={() => updateDiscipline(filter.value)}
+                >
+                  {filter.label}
+                </button>
+              ))}
+            </div>
+            <p className="service-count" aria-live="polite" data-testid="service-count">
+              <strong>{String(visibleServices.length).padStart(2, '0')}</strong>
+              {visibleServices.length === 1 ? content.interface.serviceShown : content.interface.servicesShown}
+            </p>
+          </div>
+
+          <div className="service-explorer">
+            <div className="service-list">
+              {visibleServices.map((service, index) => {
+                const selected = service.id === selectedService.id
+                return (
+                  <article
+                    className={`service-card ${selected ? 'is-selected' : ''}`}
+                    key={service.id}
+                    data-testid={`service-card-${service.id}`}
+                  >
+                    <div className="service-card__index" aria-hidden="true">{String(index + 1).padStart(2, '0')}</div>
+                    <div className="service-card__media">
+                      <Media service={service} />
+                    </div>
+                    <div className="service-card__copy">
+                      <p className="discipline-label">{service.discipline}</p>
+                      <h3>{service.title}</h3>
+                      <p>{service.summary}</p>
+                    </div>
+                    <button
+                      type="button"
+                      aria-pressed={selected}
+                      aria-controls="service-detail-region"
+                      onClick={() => selectService(service.id)}
+                    >
+                      <span>{selected ? content.interface.selectedService : content.interface.serviceAction}</span>
+                      <ArrowIcon />
+                    </button>
+                  </article>
+                )
+              })}
+            </div>
+
+            <motion.article
+              id="service-detail-region"
+              className="service-detail"
+              data-testid="service-detail"
+              aria-labelledby="service-detail-title"
+              aria-live="polite"
+              ref={detailRef}
+              key={`${discipline}-${selectedService.id}`}
+              initial={reducedMotion ? false : { opacity: 0, x: 10 }}
+              animate={{ opacity: 1, x: 0 }}
+              transition={{ duration: reducedMotion ? 0 : 0.28, ease: 'easeOut' }}
+            >
+              <div className="service-detail__media">
+                <Media service={selectedService} includeTestHook={false} />
+                <span>{selectedService.discipline} / {selectedService.id}</span>
+              </div>
+              <div className="service-detail__body">
+                <p className="detail-kicker">{content.interface.selectedService}</p>
+                <h3 id="service-detail-title">{selectedService.title}</h3>
+                <p className="detail-description">{selectedService.description}</p>
+                <div className="deliverables">
+                  <span aria-hidden="true">01—03</span>
+                  <ul>
+                    {selectedService.deliverables.map((deliverable) => <li key={deliverable}>{deliverable}</li>)}
+                  </ul>
+                </div>
+                <p className="response-note"><span aria-hidden="true" />{selectedService.responseNote}</p>
+              </div>
+            </motion.article>
+          </div>
+        </section>
+
+        <section id="approach" className="approach">
+          <div className="approach__heading page-grid">
+            <p className="eyebrow eyebrow--light"><span />{content.approach.eyebrow}</p>
+            <h2>{content.approach.title}</h2>
+          </div>
+          <ol className="principles">
+            {content.approach.principles.map((principle) => (
+              <li key={principle.number}>
+                <span>{principle.number}</span>
+                <h3>{principle.title}</h3>
+                <p>{principle.body}</p>
+              </li>
             ))}
+          </ol>
+        </section>
+
+        <section className="closing">
+          <div className="closing__measure" aria-hidden="true"><i /><span>03</span></div>
+          <div className="closing__content">
+            <p className="eyebrow"><span />{content.close.eyebrow}</p>
+            <h2>{content.close.title}</h2>
+            <p>{content.close.body}</p>
+            <button className="button button--ink" type="button" data-testid="scope-review-open" onClick={openDialog}>
+              {content.hero.primaryAction}
+              <ArrowIcon />
+            </button>
           </div>
         </section>
       </main>
+
+      <footer className="site-footer">
+        <a className="brand brand--footer" href="#top" aria-label={`${content.brand} ${content.descriptor}`}>
+          <span className="brand__mark" aria-hidden="true"><i /><i /><i /></span>
+          <span className="brand__type"><strong>{content.brand}</strong><span>{content.descriptor}</span></span>
+        </a>
+        <p>{content.footer.line}</p>
+        <p>{content.footer.region}</p>
+        <p>{content.footer.note}</p>
+      </footer>
+
+      <dialog
+        className="scope-dialog"
+        data-testid="scope-review-dialog"
+        aria-labelledby="scope-dialog-title"
+        ref={dialogRef}
+        onClose={handleDialogClose}
+      >
+        <div className="scope-dialog__topline" aria-hidden="true"><span>GRIDLINE / SCOPE INTAKE</span><span>01</span></div>
+        <button className="dialog-close" type="button" aria-label={content.interface.closeDialog} onClick={closeDialog}>
+          <span aria-hidden="true" />
+        </button>
+
+        {submitted ? (
+          <div className="success-state" data-testid="scope-review-success" role="status">
+            <span className="success-state__mark" aria-hidden="true">✓</span>
+            <h2 id="scope-dialog-title">{content.form.title}</h2>
+            <p>{content.form.success}</p>
+            <button className="button button--ink" type="button" onClick={closeDialog}>{content.interface.closeDialog}</button>
+          </div>
+        ) : (
+          <>
+            <div className="scope-dialog__intro">
+              <p className="eyebrow"><span />{content.close.eyebrow}</p>
+              <h2 id="scope-dialog-title">{content.form.title}</h2>
+              <p>{content.form.intro}</p>
+            </div>
+
+            <form className="scope-form" data-testid="scope-review-form" noValidate onSubmit={handleSubmit}>
+              <div className="field">
+                <label htmlFor="name">{content.form.labels.name}</label>
+                <input id="name" name="name" type="text" autoComplete="name" required autoFocus ref={nameRef} aria-invalid={Boolean(formErrors.name)} aria-describedby={formErrors.name ? 'error-name' : undefined} />
+                {formErrors.name && <p id="error-name" className="field-error" data-testid="error-name">{formErrors.name}</p>}
+              </div>
+
+              <div className="field">
+                <label htmlFor="email">{content.form.labels.email}</label>
+                <input id="email" name="email" type="email" autoComplete="email" required ref={emailRef} aria-invalid={Boolean(formErrors.email)} aria-describedby={formErrors.email ? 'error-email' : undefined} />
+                {formErrors.email && <p id="error-email" className="field-error" data-testid="error-email">{formErrors.email}</p>}
+              </div>
+
+              <div className="field field--full">
+                <label htmlFor="projectType">{content.form.labels.projectType}</label>
+                <div className="select-wrap">
+                  <select id="projectType" name="projectType" required defaultValue="" ref={projectTypeRef} aria-invalid={Boolean(formErrors.projectType)} aria-describedby={formErrors.projectType ? 'error-projectType' : undefined}>
+                    <option value="" disabled>{content.form.projectTypePlaceholder}</option>
+                    {content.form.projectTypes.map((projectType) => <option key={projectType}>{projectType}</option>)}
+                  </select>
+                </div>
+                {formErrors.projectType && <p id="error-projectType" className="field-error" data-testid="error-projectType">{formErrors.projectType}</p>}
+              </div>
+
+              <div className="field field--full">
+                <label htmlFor="summary">{content.form.labels.summary}</label>
+                <textarea id="summary" name="summary" rows={4} required ref={summaryRef} aria-invalid={Boolean(formErrors.summary)} aria-describedby={formErrors.summary ? 'error-summary' : undefined} />
+                {formErrors.summary && <p id="error-summary" className="field-error" data-testid="error-summary">{formErrors.summary}</p>}
+              </div>
+
+              <button className="button button--citron field--full" type="submit">
+                {content.form.submit}
+                <ArrowIcon />
+              </button>
+            </form>
+          </>
+        )}
+      </dialog>
     </div>
   )
 }

--- baseline/src/content.ts
+++ candidate/src/content.ts
@@ -19,6 +19,16 @@
     { label: 'Services', href: '#services' },
     { label: 'Approach', href: '#approach' },
   ],
+  interface: {
+    menu: 'Menu',
+    closeMenu: 'Close menu',
+    closeDialog: 'Close dialog',
+    serviceAction: 'Inspect service',
+    selectedService: 'Selected service',
+    servicesShown: 'services shown',
+    serviceShown: 'service shown',
+    mediaFallback: 'Field image not supplied',
+  },
   hero: {
     eyebrow: 'Industrial electrical + automation — Victoria',
     title: 'Keep critical sites moving.',
@@ -123,9 +133,24 @@
   form: {
     title: 'Request a scope review',
     intro: 'Tell us enough to understand the workfront. This prototype does not send data.',
+    labels: {
+      name: 'Name',
+      email: 'Work email',
+      projectType: 'Project type',
+      summary: 'Project summary',
+    },
+    projectTypePlaceholder: 'Select a project type',
     projectTypes: ['Planned upgrade', 'Fault or recurring trip', 'Shutdown work', 'Maintenance system', 'Other'],
     submit: 'Submit request',
     success: 'Thanks — a scope engineer will reply within one business day.',
+    errors: {
+      name: 'Enter your name.',
+      emailRequired: 'Enter your work email.',
+      emailInvalid: 'Enter a valid email address.',
+      projectType: 'Select a project type.',
+      summaryRequired: 'Enter a project summary.',
+      summaryLength: 'Enter at least 20 non-whitespace characters.',
+    },
   },
   footer: {
     line: 'Industrial electrical + automation field services',

--- baseline/src/styles.css
+++ candidate/src/styles.css
@@ -1,37 +1,1693 @@
 :root {
-  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
-  color: #18211f;
+  font-family: Arial, Helvetica, ui-sans-serif, system-ui, sans-serif;
+  color: #17211e;
   background: #f1efe7;
   font-synthesis: none;
   text-rendering: optimizeLegibility;
+  --paper: #f1efe7;
+  --paper-deep: #e5e2d8;
+  --ink: #17211e;
+  --steel: #26332f;
+  --muted: #606963;
+  --line: #aeb2aa;
+  --line-soft: #d1d1c9;
+  --citron: #d5ff43;
+  --error: #a02d26;
+  --page-pad: clamp(1.25rem, 4vw, 4.5rem);
+  --max-width: 90rem;
 }
 
-* { box-sizing: border-box; }
-html { scroll-behavior: smooth; }
-body { margin: 0; min-width: 320px; }
-button, input, select, textarea { font: inherit; }
-a { color: inherit; }
-.site-shell { min-height: 100vh; }
-.site-header { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 1rem 4vw; border-bottom: 1px solid #b7bbb4; }
-.brand { display: grid; text-decoration: none; }
-.brand span, .eyebrow { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
-nav { display: flex; gap: 1.5rem; }
-.hero, .services { padding: 5rem 6vw; }
-.hero { min-height: 55vh; display: grid; align-content: center; max-width: 74rem; }
-h1 { max-width: 10ch; margin: .25em 0; font-size: clamp(3rem, 9vw, 7rem); line-height: .9; letter-spacing: -.06em; }
-.hero > p:not(.eyebrow) { max-width: 42rem; font-size: 1.15rem; line-height: 1.6; }
-.services { border-top: 1px solid #b7bbb4; }
-.services > h2 { max-width: 18ch; font-size: clamp(2rem, 5vw, 4.5rem); line-height: 1; }
-.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 3rem; background: #aeb4ae; border: 1px solid #aeb4ae; }
-.service-grid article { min-width: 0; padding: 1.5rem; background: #f1efe7; }
-
-@media (max-width: 760px) {
-  .site-header nav { display: none; }
-  .site-header > button { display: none; }
-  .service-grid { grid-template-columns: 1fr; }
+* {
+  box-sizing: border-box;
+}
+
+html {
+  scroll-behavior: smooth;
+  scroll-padding-top: 5.5rem;
+}
+
+body {
+  margin: 0;
+  min-width: 320px;
+  min-height: 100vh;
+  overflow-x: hidden;
+}
+
+body:has(dialog[open]) {
+  overflow: hidden;
+}
+
+button,
+input,
+select,
+textarea {
+  font: inherit;
+}
+
+button,
+a,
+select {
+  -webkit-tap-highlight-color: transparent;
+}
+
+button {
+  color: inherit;
+}
+
+a {
+  color: inherit;
+}
+
+img,
+svg {
+  display: block;
+  max-width: 100%;
+}
+
+[hidden] {
+  display: none !important;
+}
+
+:focus-visible {
+  outline: 3px solid #1d6bd1;
+  outline-offset: 3px;
+}
+
+::selection {
+  color: var(--ink);
+  background: var(--citron);
+}
+
+.site-shell {
+  min-height: 100vh;
+  background-color: var(--paper);
+  background-image: linear-gradient(90deg, transparent calc(100% - 1px), rgba(23, 33, 30, 0.055) 1px);
+  background-size: 8.333vw 100%;
+}
+
+.site-header {
+  position: sticky;
+  z-index: 20;
+  top: 0;
+  border-bottom: 1px solid var(--line);
+  background: rgba(241, 239, 231, 0.96);
+  backdrop-filter: blur(10px);
+}
+
+.site-header__inner {
+  display: flex;
+  width: min(100%, var(--max-width));
+  min-height: 4.75rem;
+  margin: 0 auto;
+  padding: 0 var(--page-pad);
+  align-items: center;
+  justify-content: space-between;
+  gap: clamp(1.25rem, 3vw, 3rem);
+}
+
+.brand {
+  display: inline-flex;
+  min-width: max-content;
+  align-items: center;
+  gap: 0.75rem;
+  text-decoration: none;
+}
+
+.brand__mark {
+  display: flex;
+  width: 1.7rem;
+  height: 1.7rem;
+  padding: 0.28rem;
+  border: 1px solid var(--ink);
+  align-items: flex-end;
+  justify-content: space-between;
+  gap: 2px;
+}
+
+.brand__mark i {
+  display: block;
+  width: 3px;
+  background: var(--ink);
+}
+
+.brand__mark i:nth-child(1) { height: 45%; }
+.brand__mark i:nth-child(2) { height: 100%; }
+.brand__mark i:nth-child(3) { height: 70%; }
+
+.brand__type {
+  display: grid;
+  gap: 0.1rem;
+}
+
+.brand__type strong {
+  font-size: 0.94rem;
+  line-height: 1;
+  letter-spacing: 0.15em;
+}
+
+.brand__type > span {
+  color: var(--muted);
+  font-size: 0.61rem;
+  line-height: 1;
+  letter-spacing: 0.13em;
+  text-transform: uppercase;
+}
+
+.desktop-nav {
+  display: flex;
+  margin-left: auto;
+  align-items: center;
+  gap: clamp(1.25rem, 2.5vw, 2.75rem);
+}
+
+.desktop-nav a {
+  position: relative;
+  padding: 0.7rem 0;
+  font-size: 0.73rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  text-decoration: none;
+  text-transform: uppercase;
+}
+
+.desktop-nav a::after {
+  position: absolute;
+  right: 0;
+  bottom: 0.38rem;
+  left: 0;
+  height: 2px;
+  content: '';
+  background: var(--ink);
+  transform: scaleX(0);
+  transform-origin: right;
+  transition: transform 180ms ease;
+}
+
+.desktop-nav a:hover::after,
+.desktop-nav a:focus-visible::after {
+  transform: scaleX(1);
+  transform-origin: left;
+}
+
+.button {
+  display: inline-flex;
+  min-height: 3.35rem;
+  padding: 0.9rem 1.1rem;
+  border: 1px solid var(--ink);
+  border-radius: 0;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1.5rem;
+  color: var(--ink);
+  background: transparent;
+  font-size: 0.72rem;
+  font-weight: 800;
+  letter-spacing: 0.075em;
+  line-height: 1.2;
+  text-transform: uppercase;
+  cursor: pointer;
+  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
+}
+
+.button svg,
+.text-link svg,
+.service-card button svg {
+  width: 1.1rem;
+  fill: none;
+  stroke: currentColor;
+  stroke-linecap: square;
+  stroke-width: 1.5;
+  transition: transform 180ms ease;
+}
+
+.button:hover svg,
+.button:focus-visible svg,
+.text-link:hover svg,
+.text-link:focus-visible svg,
+.service-card button:hover svg,
+.service-card button:focus-visible svg {
+  transform: translateX(0.2rem);
+}
+
+.button:active {
+  transform: translateY(1px);
+}
+
+.button--header {
+  min-height: 2.75rem;
+  padding: 0.7rem 0.85rem;
+  color: var(--paper);
+  background: var(--ink);
+}
+
+.button--header:hover,
+.button--header:focus-visible,
+.button--ink:hover,
+.button--ink:focus-visible {
+  color: var(--ink);
+  background: var(--citron);
+}
+
+.button--citron {
+  background: var(--citron);
+}
+
+.button--citron:hover,
+.button--citron:focus-visible {
+  color: var(--paper);
+  background: var(--ink);
+}
+
+.button--ink {
+  color: var(--paper);
+  background: var(--ink);
+}
+
+.menu-toggle,
+.mobile-menu {
+  display: none;
+}
+
+.page-grid {
+  display: grid;
+  grid-template-columns: repeat(12, minmax(0, 1fr));
+  width: min(100%, var(--max-width));
+  margin: 0 auto;
+  padding-right: var(--page-pad);
+  padding-left: var(--page-pad);
+}
+
+.eyebrow {
+  display: flex;
+  margin: 0;
+  align-items: center;
+  gap: 0.75rem;
+  color: var(--muted);
+  font-size: clamp(0.62rem, 0.8vw, 0.72rem);
+  font-weight: 700;
+  letter-spacing: 0.11em;
+  line-height: 1.35;
+  text-transform: uppercase;
+}
+
+.eyebrow > span {
+  display: block;
+  width: 1.6rem;
+  height: 1px;
+  flex: 0 0 auto;
+  background: currentColor;
+}
+
+.hero {
+  position: relative;
+  min-height: calc(100svh - 4.75rem);
+  border-bottom: 1px solid var(--line);
+}
+
+.hero__inner {
+  min-height: calc(100svh - 8.6rem);
+  padding-top: clamp(3rem, 7vh, 6.25rem);
+  padding-bottom: clamp(3rem, 7vh, 6.25rem);
+  align-items: center;
+}
+
+.hero__copy {
+  position: relative;
+  z-index: 1;
+  grid-column: 1 / span 7;
+  padding-right: clamp(1rem, 4vw, 5rem);
+}
+
+.hero h1 {
+  max-width: 8ch;
+  margin: clamp(1.2rem, 3vh, 2rem) 0 1.5rem;
+  font-size: clamp(3.75rem, 7.6vw, 7.4rem);
+  font-weight: 500;
+  letter-spacing: -0.07em;
+  line-height: 0.87;
+}
+
+.hero__body {
+  max-width: 42rem;
+  margin: 0;
+  color: #37413d;
+  font-size: clamp(1rem, 1.35vw, 1.2rem);
+  line-height: 1.65;
+}
+
+.hero__actions {
+  display: flex;
+  margin-top: clamp(2rem, 5vh, 3.5rem);
+  align-items: stretch;
+  gap: 1.4rem;
+}
+
+.text-link {
+  display: inline-flex;
+  padding: 0.8rem 0.2rem;
+  border-bottom: 1px solid var(--ink);
+  align-items: center;
+  justify-content: space-between;
+  gap: 1.4rem;
+  font-size: 0.72rem;
+  font-weight: 800;
+  letter-spacing: 0.075em;
+  text-decoration: none;
+  text-transform: uppercase;
+}
+
+.hero__evidence {
+  position: relative;
+  grid-column: 8 / -1;
+  width: 100%;
+  margin: 0;
+  padding: clamp(1rem, 2vw, 1.75rem) 0 0 clamp(1rem, 2vw, 1.75rem);
+  border-top: 1px solid var(--ink);
+  border-left: 1px solid var(--ink);
+}
+
+.hero__evidence::before {
+  position: absolute;
+  z-index: -1;
+  top: -1.5rem;
+  right: -1.5rem;
+  width: 40%;
+  height: 54%;
+  border-top: 1px solid var(--line);
+  border-right: 1px solid var(--line);
+  content: '';
+}
+
+.hero__evidence img {
+  width: 100%;
+  aspect-ratio: 4 / 3;
+  object-fit: cover;
+}
+
+.hero__evidence figcaption {
+  display: flex;
+  min-height: 4.4rem;
+  padding: 1rem 0.9rem;
+  border-right: 1px solid var(--line);
+  border-bottom: 1px solid var(--line);
+  border-left: 1px solid var(--line);
+  align-items: center;
+  gap: 0.75rem;
+  color: var(--muted);
+  font-size: 0.68rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  line-height: 1.45;
+  text-transform: uppercase;
+}
+
+.status-light {
+  display: block;
+  width: 0.62rem;
+  height: 0.62rem;
+  flex: 0 0 auto;
+  border: 1px solid var(--ink);
+  border-radius: 50%;
+  background: var(--citron);
+  box-shadow: 0 0 0 3px rgba(213, 255, 67, 0.2);
+}
+
+.hero__coordinates {
+  display: flex;
+  position: absolute;
+  z-index: 2;
+  top: 2.75rem;
+  right: 1rem;
+  padding: 0.55rem 0.7rem;
+  gap: 0.75rem;
+  color: var(--paper);
+  background: rgba(23, 33, 30, 0.78);
+  font-family: "Courier New", monospace;
+  font-size: 0.6rem;
+  letter-spacing: 0.08em;
+}
+
+.hero__index {
+  position: absolute;
+  bottom: 5.8rem;
+  left: 2.75rem;
+  padding: 0.45rem 0.55rem;
+  color: var(--ink);
+  background: var(--citron);
+  font-family: "Courier New", monospace;
+  font-size: 0.65rem;
+  font-weight: 700;
+}
+
+.hero__baseline {
+  display: flex;
+  width: min(100%, var(--max-width));
+  height: 3.85rem;
+  margin: 0 auto;
+  padding: 0 var(--page-pad);
+  align-items: center;
+  gap: 1rem;
+  color: var(--muted);
+  font-family: "Courier New", monospace;
+  font-size: 0.6rem;
+  letter-spacing: 0.1em;
+}
+
+.hero__baseline i {
+  display: block;
+  height: 1px;
+  flex: 1;
+  background: var(--line-soft);
+}
+
+.services {
+  padding: clamp(5rem, 10vw, 9rem) var(--page-pad);
+}
+
+.section-intro {
+  padding: 0;
+}
+
+.section-intro > .eyebrow {
+  grid-column: 1 / span 4;
+  align-self: start;
+  margin-top: 0.6rem;
+}
+
+.section-intro > div {
+  grid-column: 5 / -1;
+}
+
+.section-intro h2,
+.approach h2,
+.closing h2 {
+  margin: 0;
+  font-size: clamp(2.6rem, 5.6vw, 5.7rem);
+  font-weight: 500;
+  letter-spacing: -0.06em;
+  line-height: 0.94;
+}
+
+.section-intro h2 {
+  max-width: 14ch;
+}
+
+.section-intro > div > p {
+  max-width: 39rem;
+  margin: 1.5rem 0 0;
+  color: var(--muted);
+  font-size: 1.02rem;
+  line-height: 1.65;
+}
+
+.service-toolbar {
+  display: flex;
+  width: min(100%, var(--max-width));
+  margin: clamp(3rem, 7vw, 5.5rem) auto 0;
+  border-top: 1px solid var(--ink);
+  border-bottom: 1px solid var(--ink);
+  align-items: stretch;
+  justify-content: space-between;
+}
+
+.filters {
+  display: flex;
+  min-width: 0;
+}
+
+.filters button {
+  position: relative;
+  min-width: 7.2rem;
+  min-height: 4.4rem;
+  padding: 1rem 1.25rem;
+  border: 0;
+  border-right: 1px solid var(--line);
+  border-radius: 0;
+  background: transparent;
+  font-size: 0.7rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  cursor: pointer;
+  transition: background-color 180ms ease;
+}
+
+.filters button::after {
+  position: absolute;
+  right: 1rem;
+  bottom: -1px;
+  left: 1rem;
+  height: 4px;
+  content: '';
+  background: var(--citron);
+  transform: scaleX(0);
+  transition: transform 180ms ease;
+}
+
+.filters button:hover {
+  background: rgba(23, 33, 30, 0.045);
+}
+
+.filters button.is-active::after {
+  transform: scaleX(1);
+}
+
+.service-count {
+  display: flex;
+  min-width: 11.5rem;
+  margin: 0;
+  padding: 0.7rem 1rem;
+  border-left: 1px solid var(--line);
+  align-items: center;
+  justify-content: flex-end;
+  gap: 0.7rem;
+  color: var(--muted);
+  font-size: 0.63rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.service-count strong {
+  color: var(--ink);
+  font-family: "Courier New", monospace;
+  font-size: 1.25rem;
+  font-weight: 400;
+}
+
+.service-explorer {
+  display: grid;
+  grid-template-columns: minmax(0, 1.03fr) minmax(24rem, 0.97fr);
+  width: min(100%, var(--max-width));
+  margin: 2rem auto 0;
+  align-items: start;
+  gap: clamp(1.5rem, 3vw, 3.5rem);
+}
+
+.service-list {
+  border-top: 1px solid var(--line);
+}
+
+.service-card {
+  display: grid;
+  grid-template-columns: 2.7rem 6.4rem minmax(0, 1fr);
+  position: relative;
+  min-width: 0;
+  padding: 1.45rem 1rem 1.45rem 0;
+  border-bottom: 1px solid var(--line);
+  animation: item-in 260ms ease both;
+  transition: background-color 180ms ease, padding 180ms ease;
+}
+
+.service-card.is-selected {
+  padding-left: 1rem;
+  background: var(--paper-deep);
+}
+
+.service-card.is-selected::before {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: 4px;
+  content: '';
+  background: var(--citron);
+}
+
+.service-card__index {
+  color: var(--muted);
+  font-family: "Courier New", monospace;
+  font-size: 0.65rem;
+}
+
+.service-card__copy {
+  min-width: 0;
+}
+
+.service-card__media {
+  width: 5.4rem;
+  margin-right: 1rem;
+  overflow: hidden;
+  align-self: start;
+  background: var(--steel);
+}
+
+.service-card__media > img,
+.service-card__media > .media-fallback {
+  width: 100%;
+  aspect-ratio: 1;
+  object-fit: cover;
+}
+
+.service-card__media .media-fallback {
+  position: relative;
+  padding: 0.55rem;
+  justify-content: flex-end;
+  background-size: 0.8rem 0.8rem;
+}
+
+.service-card__media .media-fallback__signal,
+.service-card__media .media-fallback strong {
+  display: none;
+}
+
+.service-card__media .media-fallback > span:not(.media-fallback__signal) {
+  margin: 0;
+  font-size: 0.47rem;
+  line-height: 1.25;
+}
+
+.discipline-label,
+.detail-kicker {
+  margin: 0 0 0.65rem;
+  color: var(--muted);
+  font-size: 0.62rem;
+  font-weight: 800;
+  letter-spacing: 0.11em;
+  text-transform: uppercase;
+}
+
+.service-card h3 {
+  max-width: 30ch;
+  margin: 0;
+  overflow-wrap: anywhere;
+  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
+  font-weight: 600;
+  letter-spacing: -0.035em;
+  line-height: 1.08;
+}
+
+.service-card__copy > p:last-child {
+  max-width: 44rem;
+  margin: 0.8rem 0 0;
+  color: var(--muted);
+  font-size: 0.88rem;
+  line-height: 1.55;
+}
+
+.service-card button {
+  display: flex;
+  grid-column: 3;
+  width: max-content;
+  margin-top: 1rem;
+  padding: 0.3rem 0;
+  border: 0;
+  border-bottom: 1px solid var(--ink);
+  border-radius: 0;
+  align-items: center;
+  gap: 0.7rem;
+  background: transparent;
+  font-size: 0.62rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  cursor: pointer;
+}
+
+.service-detail {
+  position: sticky;
+  top: 6.7rem;
+  min-width: 0;
+  border: 1px solid var(--ink);
+  background: var(--paper);
+  scroll-margin-top: 6rem;
+}
+
+.service-detail__media {
+  position: relative;
+  overflow: hidden;
+  background: var(--steel);
+}
+
+.service-detail__media > img,
+.service-detail__media > .media-fallback {
+  width: 100%;
+  aspect-ratio: 16 / 9;
+  object-fit: cover;
+}
+
+.service-detail__media > span {
+  position: absolute;
+  right: 0.8rem;
+  bottom: 0.8rem;
+  max-width: calc(100% - 1.6rem);
+  padding: 0.45rem 0.6rem;
+  overflow-wrap: anywhere;
+  color: var(--paper);
+  background: rgba(23, 33, 30, 0.84);
+  font-family: "Courier New", monospace;
+  font-size: 0.57rem;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+}
+
+.media-fallback {
+  display: flex;
+  padding: clamp(1.5rem, 4vw, 3rem);
+  align-items: flex-start;
+  flex-direction: column;
+  justify-content: flex-end;
+  color: var(--paper);
+  background-color: var(--steel);
+  background-image: linear-gradient(rgba(213, 255, 67, 0.12) 1px, transparent 1px), linear-gradient(90deg, rgba(213, 255, 67, 0.12) 1px, transparent 1px);
+  background-size: 2rem 2rem;
+}
+
+.media-fallback > span:not(.media-fallback__signal) {
+  margin-bottom: 0.5rem;
+  color: var(--citron);
+  font-family: "Courier New", monospace;
+  font-size: 0.6rem;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.media-fallback strong {
+  max-width: 22ch;
+  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
+  font-weight: 500;
+  line-height: 1.05;
+}
+
+.media-fallback__signal {
+  display: flex;
+  position: absolute;
+  top: 1.5rem;
+  right: 1.5rem;
+  left: 1.5rem;
+  height: 4rem;
+  align-items: center;
+  gap: 0;
+}
+
+.media-fallback__signal i {
+  display: block;
+  height: 1px;
+  flex: 1;
+  background: var(--citron);
+  transform-origin: center;
+}
+
+.media-fallback__signal i:nth-child(1) { transform: rotate(18deg); }
+.media-fallback__signal i:nth-child(2) { transform: rotate(-33deg); }
+.media-fallback__signal i:nth-child(3) { transform: rotate(42deg); }
+.media-fallback__signal i:nth-child(4) { transform: rotate(-20deg); }
+.media-fallback__signal i:nth-child(5) { transform: rotate(9deg); }
+
+.service-detail__body {
+  padding: clamp(1.4rem, 3vw, 2.5rem);
+}
+
+.service-detail h3 {
+  margin: 0;
+  overflow-wrap: anywhere;
+  font-size: clamp(1.85rem, 3vw, 3rem);
+  font-weight: 500;
+  letter-spacing: -0.055em;
+  line-height: 0.98;
+}
+
+.detail-description {
+  margin: 1.25rem 0 0;
+  color: #49534e;
+  font-size: 0.92rem;
+  line-height: 1.65;
+}
+
+.deliverables {
+  display: grid;
+  grid-template-columns: 3.6rem minmax(0, 1fr);
+  margin-top: 1.5rem;
+  padding-top: 1rem;
+  border-top: 1px solid var(--line);
+  gap: 0.8rem;
+}
+
+.deliverables > span {
+  padding-top: 0.1rem;
+  color: var(--muted);
+  font-family: "Courier New", monospace;
+  font-size: 0.58rem;
+}
+
+.deliverables ul {
+  display: grid;
+  margin: 0;
+  padding: 0;
+  gap: 0.6rem;
+  list-style: none;
+}
+
+.deliverables li {
+  position: relative;
+  padding-left: 1rem;
+  font-size: 0.82rem;
+  line-height: 1.4;
+}
+
+.deliverables li::before {
+  position: absolute;
+  top: 0.48em;
+  left: 0;
+  width: 0.35rem;
+  height: 0.35rem;
+  content: '';
+  background: var(--citron);
+  box-shadow: 0 0 0 1px var(--ink);
+}
+
+.response-note {
+  display: flex;
+  margin: 1.5rem 0 0;
+  padding-top: 1rem;
+  border-top: 1px solid var(--line-soft);
+  align-items: flex-start;
+  gap: 0.75rem;
+  color: var(--muted);
+  font-size: 0.76rem;
+  line-height: 1.5;
+}
+
+.response-note span {
+  display: block;
+  width: 0.55rem;
+  height: 0.55rem;
+  margin-top: 0.25rem;
+  flex: 0 0 auto;
+  border: 1px solid var(--ink);
+  border-radius: 50%;
+}
+
+.approach {
+  padding: clamp(5rem, 9vw, 8.5rem) var(--page-pad);
+  color: var(--paper);
+  background: var(--ink);
+}
+
+.approach__heading {
+  padding: 0;
+}
+
+.approach__heading .eyebrow {
+  grid-column: 1 / span 4;
+  align-self: start;
+  margin-top: 0.55rem;
+}
+
+.eyebrow--light {
+  color: #aeb7b1;
+}
+
+.approach__heading h2 {
+  grid-column: 5 / -1;
+  max-width: 12ch;
+}
+
+.principles {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  width: min(100%, var(--max-width));
+  margin: clamp(3.5rem, 7vw, 6.5rem) auto 0;
+  padding: 0;
+  border-top: 1px solid #68716c;
+  list-style: none;
+}
+
+.principles li {
+  min-width: 0;
+  padding: 1.5rem clamp(1.1rem, 2.5vw, 2.5rem) 0;
+  border-left: 1px solid #68716c;
+}
+
+.principles li:last-child {
+  border-right: 1px solid #68716c;
+}
+
+.principles li > span {
+  color: var(--citron);
+  font-family: "Courier New", monospace;
+  font-size: 0.68rem;
+}
+
+.principles h3 {
+  max-width: 15ch;
+  min-height: 2.4em;
+  margin: clamp(2.5rem, 5vw, 5rem) 0 1rem;
+  font-size: clamp(1.35rem, 2.2vw, 2rem);
+  font-weight: 500;
+  letter-spacing: -0.04em;
+  line-height: 1.05;
+}
+
+.principles p {
+  max-width: 27rem;
+  margin: 0;
+  color: #b9c0bc;
+  font-size: 0.88rem;
+  line-height: 1.65;
+}
+
+.closing {
+  display: grid;
+  grid-template-columns: minmax(10rem, 0.34fr) minmax(0, 1fr);
+  min-height: 34rem;
+  background: var(--citron);
+}
+
+.closing__measure {
+  display: flex;
+  padding: clamp(2rem, 5vw, 4.5rem);
+  border-right: 1px solid var(--ink);
+  align-items: center;
+  flex-direction: column;
+  gap: 1rem;
+  font-family: "Courier New", monospace;
+  font-size: 0.7rem;
+}
+
+.closing__measure i {
+  display: block;
+  width: 1px;
+  flex: 1;
+  background: var(--ink);
+}
+
+.closing__content {
+  display: grid;
+  padding: clamp(4rem, 8vw, 8rem) var(--page-pad);
+  align-content: center;
+  justify-items: start;
+}
+
+.closing__content .eyebrow {
+  color: var(--ink);
+}
+
+.closing h2 {
+  max-width: 14ch;
+  margin-top: 1.5rem;
+}
+
+.closing__content > p:not(.eyebrow) {
+  max-width: 40rem;
+  margin: 1.5rem 0 2.25rem;
+  font-size: 1rem;
+  line-height: 1.65;
+}
+
+.site-footer {
+  display: grid;
+  grid-template-columns: 1.5fr 1fr 0.7fr 1.5fr;
+  padding: 2rem var(--page-pad);
+  align-items: center;
+  gap: 1.5rem;
+  color: var(--paper);
+  background: var(--ink);
+}
+
+.brand--footer .brand__mark {
+  border-color: var(--paper);
+}
+
+.brand--footer .brand__mark i {
+  background: var(--paper);
+}
+
+.brand--footer .brand__type > span,
+.site-footer p {
+  color: #b9c0bc;
+}
+
+.site-footer p {
+  margin: 0;
+  font-size: 0.66rem;
+  letter-spacing: 0.06em;
+  line-height: 1.5;
+  text-transform: uppercase;
+}
+
+.site-footer p:last-child {
+  text-align: right;
+}
+
+.scope-dialog {
+  width: min(calc(100% - 2rem), 54rem);
+  max-height: min(90vh, 48rem);
+  margin: auto;
+  padding: 0;
+  overflow: auto;
+  border: 1px solid var(--ink);
+  border-radius: 0;
+  color: var(--ink);
+  background: var(--paper);
+  box-shadow: 0 1.8rem 6rem rgba(0, 0, 0, 0.32);
+}
+
+.scope-dialog[open] {
+  animation: dialog-in 240ms ease both;
+}
+
+.scope-dialog::backdrop {
+  background: rgba(12, 18, 16, 0.75);
+  backdrop-filter: blur(3px);
+  animation: fade-in 180ms ease both;
+}
+
+.scope-dialog__topline {
+  display: flex;
+  padding: 0.8rem 1rem;
+  border-bottom: 1px solid var(--line);
+  align-items: center;
+  justify-content: space-between;
+  color: var(--muted);
+  font-family: "Courier New", monospace;
+  font-size: 0.58rem;
+  letter-spacing: 0.09em;
+}
+
+.dialog-close {
+  position: absolute;
+  z-index: 1;
+  top: 3rem;
+  right: 1.3rem;
+  width: 2.75rem;
+  height: 2.75rem;
+  padding: 0;
+  border: 1px solid var(--ink);
+  border-radius: 0;
+  background: transparent;
+  cursor: pointer;
+  transition: background-color 180ms ease;
+}
+
+.dialog-close:hover,
+.dialog-close:focus-visible {
+  background: var(--citron);
+}
+
+.dialog-close span::before,
+.dialog-close span::after {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  width: 1rem;
+  height: 1px;
+  content: '';
+  background: var(--ink);
+}
+
+.dialog-close span::before { transform: translate(-50%, -50%) rotate(45deg); }
+.dialog-close span::after { transform: translate(-50%, -50%) rotate(-45deg); }
+
+.scope-dialog__intro {
+  padding: clamp(2rem, 5vw, 4rem) clamp(1.25rem, 5vw, 4rem) 2rem;
+}
+
+.scope-dialog__intro h2,
+.success-state h2 {
+  max-width: 12ch;
+  margin: 1.25rem 0 1rem;
+  font-size: clamp(2.4rem, 6vw, 4.5rem);
+  font-weight: 500;
+  letter-spacing: -0.06em;
+  line-height: 0.94;
+}
+
+.scope-dialog__intro > p:last-child,
+.success-state p {
+  max-width: 35rem;
+  margin: 0;
+  color: var(--muted);
+  font-size: 0.9rem;
+  line-height: 1.6;
+}
+
+.scope-form {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  padding: 0 clamp(1.25rem, 5vw, 4rem) clamp(2rem, 5vw, 4rem);
+  gap: 1.4rem 1rem;
+}
+
+.field {
+  display: grid;
+  align-content: start;
+  gap: 0.48rem;
+}
+
+.field--full {
+  grid-column: 1 / -1;
+}
+
+.field label {
+  font-size: 0.65rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.field input,
+.field select,
+.field textarea {
+  width: 100%;
+  min-width: 0;
+  border: 1px solid var(--line);
+  border-radius: 0;
+  color: var(--ink);
+  background: #f8f6ef;
+  transition: border-color 160ms ease, box-shadow 160ms ease;
+}
+
+.field input,
+.field select {
+  height: 3.25rem;
+  padding: 0 0.85rem;
+}
+
+.field textarea {
+  min-height: 7rem;
+  padding: 0.85rem;
+  resize: vertical;
+}
+
+.field input:focus,
+.field select:focus,
+.field textarea:focus {
+  border-color: var(--ink);
+  box-shadow: inset 3px 0 0 var(--citron);
+}
+
+.field [aria-invalid="true"] {
+  border-color: var(--error);
+}
+
+.select-wrap {
+  position: relative;
+}
+
+.select-wrap::after {
+  position: absolute;
+  top: calc(50% - 0.25rem);
+  right: 1rem;
+  width: 0.5rem;
+  height: 0.5rem;
+  border-right: 1px solid var(--ink);
+  border-bottom: 1px solid var(--ink);
+  content: '';
+  pointer-events: none;
+  transform: rotate(45deg);
+}
+
+.field select {
+  padding-right: 2.5rem;
+  appearance: none;
+}
+
+.field-error {
+  margin: 0;
+  color: var(--error);
+  font-size: 0.74rem;
+  font-weight: 700;
+  line-height: 1.35;
+}
+
+.scope-form > .button {
+  margin-top: 0.4rem;
+}
+
+.success-state {
+  display: grid;
+  min-height: 31rem;
+  padding: clamp(3.5rem, 8vw, 7rem) clamp(1.25rem, 6vw, 5rem);
+  align-content: center;
+  justify-items: start;
+}
+
+.success-state__mark {
+  display: grid;
+  width: 3.5rem;
+  height: 3.5rem;
+  border: 1px solid var(--ink);
+  place-items: center;
+  background: var(--citron);
+  font-size: 1.4rem;
+}
+
+.success-state .button {
+  margin-top: 2rem;
+}
+
+@keyframes item-in {
+  from { opacity: 0; transform: translateY(0.5rem); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes detail-in {
+  from { opacity: 0; transform: translateX(0.6rem); }
+  to { opacity: 1; transform: translateX(0); }
+}
+
+@keyframes dialog-in {
+  from { opacity: 0; transform: translateY(1rem) scale(0.985); }
+  to { opacity: 1; transform: translateY(0) scale(1); }
+}
+
+@keyframes fade-in {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+
+.hero__copy > * {
+  animation: item-in 450ms ease both;
+}
+
+.hero__copy > :nth-child(2) { animation-delay: 70ms; }
+.hero__copy > :nth-child(3) { animation-delay: 130ms; }
+.hero__copy > :nth-child(4) { animation-delay: 190ms; }
+.hero__evidence { animation: detail-in 550ms 140ms ease both; }
+
+@media (max-width: 980px) {
+  .service-explorer {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .service-detail {
+    position: relative;
+    top: 0;
+  }
+
+  .service-detail__media > img,
+  .service-detail__media > .media-fallback {
+    aspect-ratio: 2 / 1;
+  }
+
+  .site-footer {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .site-footer p:last-child {
+    text-align: left;
+  }
+}
+
+@media (max-width: 820px) {
+  .desktop-nav,
+  .desktop-action {
+    display: none;
+  }
+
+  .menu-toggle {
+    display: flex;
+    min-height: 2.75rem;
+    padding: 0.6rem 0.75rem;
+    border: 1px solid var(--ink);
+    border-radius: 0;
+    align-items: center;
+    gap: 0.8rem;
+    background: transparent;
+    font-size: 0.66rem;
+    font-weight: 800;
+    letter-spacing: 0.08em;
+    text-transform: uppercase;
+    cursor: pointer;
+  }
+
+  .menu-toggle__lines {
+    display: grid;
+    width: 1rem;
+    gap: 0.27rem;
+  }
+
+  .menu-toggle__lines i {
+    display: block;
+    height: 1px;
+    background: var(--ink);
+    transition: transform 180ms ease;
+  }
+
+  .menu-toggle[aria-expanded="true"] .menu-toggle__lines i:first-child {
+    transform: translateY(0.14rem) rotate(45deg);
+  }
+
+  .menu-toggle[aria-expanded="true"] .menu-toggle__lines i:last-child {
+    transform: translateY(-0.14rem) rotate(-45deg);
+  }
+
+  .mobile-menu {
+    display: grid;
+    position: absolute;
+    top: calc(100% + 1px);
+    right: 0;
+    left: 0;
+    padding: 1rem var(--page-pad) 1.25rem;
+    border-bottom: 1px solid var(--ink);
+    background: var(--paper);
+    box-shadow: 0 1rem 2rem rgba(23, 33, 30, 0.12);
+    animation: item-in 180ms ease both;
+  }
+
+  .mobile-menu nav {
+    display: grid;
+  }
+
+  .mobile-menu nav a {
+    display: flex;
+    padding: 1.1rem 0;
+    border-bottom: 1px solid var(--line);
+    align-items: center;
+    gap: 1.25rem;
+    font-size: 1.25rem;
+    font-weight: 600;
+    letter-spacing: -0.025em;
+    text-decoration: none;
+  }
+
+  .mobile-menu nav a span {
+    color: var(--muted);
+    font-family: "Courier New", monospace;
+    font-size: 0.6rem;
+  }
+
+  .mobile-menu .button {
+    margin-top: 1rem;
+  }
+
+  .hero h1 {
+    font-size: clamp(3.55rem, 9.8vw, 5.8rem);
+  }
+
+  .hero__copy {
+    grid-column: 1 / span 7;
+    padding-right: 1.5rem;
+  }
+
+  .hero__evidence {
+    grid-column: 8 / -1;
+  }
+
+  .section-intro > .eyebrow,
+  .approach__heading .eyebrow {
+    grid-column: 1 / span 4;
+  }
+
+  .section-intro > div,
+  .approach__heading h2 {
+    grid-column: 5 / -1;
+  }
+
+  .filters button {
+    min-width: 0;
+    padding-right: 1rem;
+    padding-left: 1rem;
+  }
+
+  .service-count {
+    min-width: 9.5rem;
+  }
+}
+
+@media (max-width: 700px) {
+  :root {
+    --page-pad: 1.25rem;
+  }
+
+  .site-shell {
+    background-size: 4.5rem 100%;
+  }
+
+  .site-header__inner {
+    min-height: 4.25rem;
+  }
+
+  .brand__mark {
+    width: 1.55rem;
+    height: 1.55rem;
+  }
+
+  .brand__type strong {
+    font-size: 0.82rem;
+  }
+
+  .hero {
+    min-height: auto;
+  }
+
+  .hero__inner {
+    grid-template-columns: 1fr;
+    min-height: auto;
+    padding-top: 3.5rem;
+    padding-bottom: 2.5rem;
+  }
+
+  .hero__copy,
+  .hero__evidence {
+    grid-column: 1;
+  }
+
+  .hero__copy {
+    padding-right: 0;
+  }
+
+  .hero h1 {
+    max-width: 7.5ch;
+    margin-top: 1.2rem;
+    font-size: clamp(3.55rem, 17vw, 5rem);
+  }
+
+  .hero__actions {
+    align-items: stretch;
+    flex-direction: column;
+    gap: 0.9rem;
+  }
+
+  .hero__actions .button,
+  .hero__actions .text-link {
+    width: 100%;
+  }
+
+  .hero__evidence {
+    margin-top: 3.5rem;
+  }
+
+  .hero__evidence::before {
+    right: -0.5rem;
+  }
+
+  .hero__evidence figcaption {
+    min-height: 3.8rem;
+  }
+
+  .hero__baseline span:last-child {
+    display: none;
+  }
+
+  .services {
+    padding-top: 5rem;
+    padding-bottom: 5rem;
+  }
+
+  .section-intro,
+  .approach__heading {
+    grid-template-columns: 1fr;
+  }
+
+  .section-intro > .eyebrow,
+  .section-intro > div,
+  .approach__heading .eyebrow,
+  .approach__heading h2 {
+    grid-column: 1;
+  }
+
+  .section-intro > .eyebrow,
+  .approach__heading .eyebrow {
+    margin: 0 0 1.5rem;
+  }
+
+  .section-intro h2,
+  .approach h2,
+  .closing h2 {
+    font-size: clamp(2.6rem, 13vw, 4rem);
+  }
+
+  .service-toolbar {
+    display: grid;
+    border-bottom: 0;
+  }
+
+  .filters {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    border-bottom: 1px solid var(--ink);
+  }
+
+  .filters button {
+    min-height: 3.5rem;
+    border-bottom: 1px solid var(--line);
+    text-align: left;
+  }
+
+  .filters button:nth-last-child(-n + 2) {
+    border-bottom: 0;
+  }
+
+  .service-count {
+    min-height: 3.5rem;
+    border-bottom: 1px solid var(--ink);
+    border-left: 0;
+    justify-content: flex-start;
+  }
+
+  .service-explorer {
+    margin-top: 1rem;
+    gap: 2.5rem;
+  }
+
+  .service-card {
+    grid-template-columns: 2rem 4.75rem minmax(0, 1fr);
+    padding-right: 0;
+  }
+
+  .service-card.is-selected {
+    padding-left: 0.75rem;
+  }
+
+  .service-card h3 {
+    font-size: 1.3rem;
+  }
+
+  .service-card__media {
+    width: 4rem;
+    margin-right: 0.75rem;
+  }
+
+  .service-card button {
+    grid-column: 3;
+  }
+
+  .service-detail__media > img,
+  .service-detail__media > .media-fallback {
+    aspect-ratio: 4 / 3;
+  }
+
+  .service-detail__body {
+    padding: 1.35rem;
+  }
+
+  .media-fallback {
+    padding: 1.35rem;
+  }
+
+  .principles {
+    grid-template-columns: 1fr;
+  }
+
+  .principles li,
+  .principles li:last-child {
+    padding: 1.3rem 0 2.3rem;
+    border-right: 0;
+    border-bottom: 1px solid #68716c;
+    border-left: 0;
+  }
+
+  .principles h3 {
+    min-height: auto;
+    margin-top: 2rem;
+  }
+
+  .closing {
+    grid-template-columns: 3.5rem minmax(0, 1fr);
+  }
+
+  .closing__measure {
+    padding: 2rem 1rem;
+  }
+
+  .closing__content {
+    padding-top: 4.5rem;
+    padding-bottom: 4.5rem;
+  }
+
+  .closing__content .button {
+    width: 100%;
+  }
+
+  .site-footer {
+    grid-template-columns: 1fr;
+    padding-top: 2.5rem;
+    padding-bottom: 2.5rem;
+    gap: 1rem;
+  }
+
+  .scope-dialog {
+    width: calc(100% - 1rem);
+    max-height: calc(100dvh - 1rem);
+  }
+
+  .scope-dialog__topline span:first-child {
+    max-width: 14rem;
+  }
+
+  .dialog-close {
+    top: 2.7rem;
+    right: 1rem;
+  }
+
+  .scope-dialog__intro {
+    padding-top: 3.5rem;
+  }
+
+  .scope-dialog__intro h2 {
+    padding-right: 2.5rem;
+  }
+
+  .scope-form {
+    grid-template-columns: 1fr;
+  }
+
+  .field,
+  .field--full {
+    grid-column: 1;
+  }
+}
+
+@media (max-width: 380px) {
+  .hero h1 {
+    font-size: 3.55rem;
+  }
+
+  .menu-toggle {
+    padding-right: 0.6rem;
+    padding-left: 0.6rem;
+  }
+
+  .filters button {
+    padding-right: 0.75rem;
+    padding-left: 0.75rem;
+    font-size: 0.64rem;
+  }
+
+  .closing {
+    grid-template-columns: 2.75rem minmax(0, 1fr);
+  }
+
+  .closing__measure {
+    padding-right: 0.7rem;
+    padding-left: 0.7rem;
+  }
 }
 
 @media (prefers-reduced-motion: reduce) {
-  html { scroll-behavior: auto; }
-  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
+  html {
+    scroll-behavior: auto;
+  }
+
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    animation-duration: 0.01ms !important;
+    animation-delay: 0ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
 }
