--- baseline/src/components/Header.tsx
+++ candidate/src/components/Header.tsx
@@ -0,0 +1,98 @@
+import { useEffect, useRef, useState } from 'react'
+import { motion, AnimatePresence, useReducedMotion } from 'motion/react'
+import { content } from '../content'
+import { useDialogContext } from '../hooks/useDialog'
+
+export function Header() {
+  const { open } = useDialogContext()
+  const [menuOpen, setMenuOpen] = useState(false)
+  const toggleRef = useRef<HTMLButtonElement>(null)
+  const reduced = useReducedMotion()
+
+  useEffect(() => {
+    if (!menuOpen) return
+    const onKey = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        setMenuOpen(false)
+        toggleRef.current?.focus()
+      }
+    }
+    window.addEventListener('keydown', onKey)
+    return () => window.removeEventListener('keydown', onKey)
+  }, [menuOpen])
+
+  return (
+    <header className="site-header" data-testid="site-header">
+      <div className="shell site-header__inner">
+        <a className="brand" href="#top" aria-label="Gridline Field Services home">
+          <strong>{content.brand}</strong>
+          <span>{content.descriptor}</span>
+        </a>
+        <nav className="site-nav" aria-label="Primary navigation">
+          {content.nav.map((item) => (
+            <a key={item.href} href={item.href}>
+              {item.label}
+            </a>
+          ))}
+        </nav>
+        <div className="site-header__actions">
+          <button
+            ref={toggleRef}
+            type="button"
+            className="menu-toggle"
+            data-testid="mobile-menu-toggle"
+            aria-expanded={menuOpen}
+            aria-controls="mobile-menu-region"
+            onClick={() => setMenuOpen((prev) => !prev)}
+          >
+            <span className="menu-toggle__bars" aria-hidden="true">
+              <span />
+              <span />
+              <span />
+            </span>
+            <span>{menuOpen ? 'Close' : 'Menu'}</span>
+          </button>
+          <button
+            type="button"
+            className="btn btn--small"
+            data-testid="scope-review-open"
+            onClick={(event) => open(event.currentTarget)}
+          >
+            {content.hero.primaryAction}
+            <span className="arrow" aria-hidden="true" />
+          </button>
+        </div>
+      </div>
+      <AnimatePresence initial={false}>
+        {menuOpen ? (
+          <motion.div
+            key="mobile-menu"
+            id="mobile-menu-region"
+            data-testid="mobile-menu"
+            className="mobile-menu shell"
+            initial={reduced ? false : { opacity: 0, y: -8 }}
+            animate={{ opacity: 1, y: 0 }}
+            exit={reduced ? { opacity: 0 } : { opacity: 0, y: -8 }}
+            transition={{ duration: 0.2, ease: 'easeOut' }}
+          >
+            <nav aria-label="Mobile navigation">
+              {content.nav.map((item) => (
+                <a
+                  key={item.href}
+                  href={item.href}
+                  onClick={() => setMenuOpen(false)}
+                >
+                  {item.label}
+                </a>
+              ))}
+            </nav>
+            <div className="mobile-menu__meta">
+              <span>{content.footer.region}</span>
+              <span>{content.hero.availability}</span>
+            </div>
+          </motion.div>
+        ) : null}
+      </AnimatePresence>
+    </header>
+  )
+}

--- baseline/src/components/MediaFrame.tsx
+++ candidate/src/components/MediaFrame.tsx
@@ -0,0 +1,50 @@
+type Props = {
+  image: string | null
+  alt: string
+  serviceId: string
+  discipline: string
+  title: string
+}
+
+export function MediaFrame({ image, alt, serviceId, discipline, title }: Props) {
+  if (image) {
+    return (
+      <div className="media-frame">
+        <img src={image} alt={alt} loading="lazy" decoding="async" />
+      </div>
+    )
+  }
+
+  return (
+    <div
+      className="media-frame"
+      data-testid="media-fallback"
+      role="img"
+      aria-label={`No field image supplied for ${title}`}
+    >
+      <svg
+        className="media-frame__fallback-schematic"
+        viewBox="0 0 400 300"
+        preserveAspectRatio="none"
+        aria-hidden="true"
+        focusable="false"
+      >
+        <g fill="none" stroke="#1d2926" strokeWidth="1" opacity="0.45">
+          <path d="M0 220h400M40 220V60M120 220V40M200 220V90M280 220V50M360 220V80" />
+          <path d="M40 220h320" strokeDasharray="4 6" />
+          <circle cx="200" cy="150" r="32" />
+          <path d="M200 90v60M170 150h60" />
+        </g>
+        <g fill="#d5ff43" stroke="#1d2926" strokeWidth="1">
+          <rect x="194" y="144" width="12" height="12" />
+        </g>
+      </svg>
+      <div className="media-frame__fallback">
+        <span className="media-frame__fallback-tag">
+          {discipline} · {serviceId.toUpperCase()}
+        </span>
+        <span className="media-frame__fallback-title">{title}</span>
+      </div>
+    </div>
+  )
+}

--- baseline/src/hooks/useDialog.tsx
+++ candidate/src/hooks/useDialog.tsx
@@ -0,0 +1,122 @@
+import {
+  createContext,
+  useCallback,
+  useContext,
+  useEffect,
+  useId,
+  useMemo,
+  useRef,
+  useState,
+  type ReactNode,
+} from 'react'
+
+const FOCUSABLE = [
+  'a[href]',
+  'button:not([disabled])',
+  'input:not([disabled]):not([type="hidden"])',
+  'select:not([disabled])',
+  'textarea:not([disabled])',
+  '[tabindex]:not([tabindex="-1"])',
+].join(',')
+
+type DialogContextValue = {
+  isOpen: boolean
+  open: (opener?: HTMLElement | null) => void
+  close: () => void
+  titleId: string
+  descriptionId: string
+  panelRef: React.MutableRefObject<HTMLElement | null>
+  label: string
+}
+
+const DialogContext = createContext<DialogContextValue | null>(null)
+
+export function DialogProvider({
+  label,
+  children,
+}: {
+  label: string
+  children: ReactNode
+}) {
+  const [isOpen, setIsOpen] = useState(false)
+  const titleId = useId()
+  const descriptionId = useId()
+  const panelRef = useRef<HTMLElement | null>(null)
+  const openerRef = useRef<HTMLElement | null>(null)
+  const previousFocusRef = useRef<HTMLElement | null>(null)
+
+  const open = useCallback((opener?: HTMLElement | null) => {
+    openerRef.current = opener ?? null
+    setIsOpen(true)
+  }, [])
+  const close = useCallback(() => setIsOpen(false), [])
+
+  useEffect(() => {
+    if (typeof document === 'undefined') return
+    if (!isOpen) return
+    const previousOverflow = document.body.style.overflow
+    document.body.style.overflow = 'hidden'
+    previousFocusRef.current = (document.activeElement as HTMLElement | null) ?? null
+
+    const node = panelRef.current
+    if (node) {
+      const focusables = node.querySelectorAll<HTMLElement>(FOCUSABLE)
+      const first = focusables[0]
+      if (first) {
+        window.requestAnimationFrame(() => first.focus())
+      }
+    }
+
+    return () => {
+      document.body.style.overflow = previousOverflow
+      const returnTo = previousFocusRef.current
+      if (returnTo && document.contains(returnTo)) {
+        returnTo.focus()
+      }
+    }
+  }, [isOpen])
+
+  useEffect(() => {
+    if (!isOpen) return
+    const onKey = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        event.preventDefault()
+        setIsOpen(false)
+        return
+      }
+      if (event.key !== 'Tab') return
+      const node = panelRef.current
+      if (!node) return
+      const focusables = Array.from(node.querySelectorAll<HTMLElement>(FOCUSABLE))
+      if (focusables.length === 0) {
+        event.preventDefault()
+        return
+      }
+      const first = focusables[0]
+      const last = focusables[focusables.length - 1]
+      const active = document.activeElement as HTMLElement | null
+      if (event.shiftKey && (active === first || !node.contains(active))) {
+        event.preventDefault()
+        last.focus()
+      } else if (!event.shiftKey && (active === last || !node.contains(active))) {
+        event.preventDefault()
+        first.focus()
+      }
+    }
+    window.addEventListener('keydown', onKey)
+    return () => window.removeEventListener('keydown', onKey)
+  }, [isOpen])
+
+  const value = useMemo<DialogContextValue>(
+    () => ({ isOpen, open, close, titleId, descriptionId, panelRef, label }),
+    [isOpen, open, close, titleId, descriptionId, label],
+  )
+
+  return <DialogContext.Provider value={value}>{children}</DialogContext.Provider>
+}
+
+export function useDialogContext() {
+  const ctx = useContext(DialogContext)
+  if (!ctx) throw new Error('useDialogContext must be used within DialogProvider')
+  return ctx
+}

--- baseline/src/hooks/useUrlDiscipline.ts
+++ candidate/src/hooks/useUrlDiscipline.ts
@@ -0,0 +1,51 @@
+import { useCallback, useEffect, useState } from 'react'
+
+export type DisciplineParam = 'all' | 'electrical' | 'controls' | 'reliability'
+
+const VALID: ReadonlySet<DisciplineParam> = new Set([
+  'all',
+  'electrical',
+  'controls',
+  'reliability',
+])
+
+function readFromUrl(): DisciplineParam {
+  if (typeof window === 'undefined') return 'all'
+  const params = new URLSearchParams(window.location.search)
+  const value = params.get('discipline')
+  if (value && VALID.has(value as DisciplineParam)) {
+    return value as DisciplineParam
+  }
+  return 'all'
+}
+
+function writeToUrl(value: DisciplineParam, mode: 'push' | 'replace') {
+  if (typeof window === 'undefined') return
+  const url = new URL(window.location.href)
+  if (value === 'all') {
+    url.searchParams.delete('discipline')
+  } else {
+    url.searchParams.set('discipline', value)
+  }
+  const method = mode === 'push' ? 'pushState' : 'replaceState'
+  window.history[method](null, '', url.toString())
+}
+
+export function useUrlDiscipline() {
+  const [discipline, setDisciplineState] = useState<DisciplineParam>(readFromUrl)
+
+  useEffect(() => {
+    const onPop = () => {
+      setDisciplineState(readFromUrl())
+    }
+    window.addEventListener('popstate', onPop)
+    return () => window.removeEventListener('popstate', onPop)
+  }, [])
+
+  const setDiscipline = useCallback((value: DisciplineParam) => {
+    setDisciplineState(value)
+    writeToUrl(value, 'push')
+  }, [])
+
+  return { discipline, setDiscipline } as const
+}

--- baseline/src/styles.css
+++ candidate/src/styles.css
@@ -1,37 +1,1164 @@
 :root {
-  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
-  color: #18211f;
-  background: #f1efe7;
+  --bg: #f1efe7;
+  --bg-soft: #e8e4d6;
+  --bg-card: #f6f3ea;
+  --ink: #1d2926;
+  --ink-soft: #3a4641;
+  --ink-mute: #5c6760;
+  --rule: #b7bbb1;
+  --rule-soft: #d3d5c9;
+  --rule-strong: #6f7770;
+  --citron: #d5ff43;
+  --citron-deep: #b9e22a;
+  --warn: #a4482b;
+  --shadow-1: 0 1px 0 rgba(29, 41, 38, 0.06);
+  --shadow-2: 0 24px 60px -28px rgba(29, 41, 38, 0.35);
+  --serif: ui-serif, "Iowan Old Style", "Apple Garamond", "Baskerville", "Times New Roman", "Droid Serif", Times, "Source Serif Pro", serif;
+  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, "Liberation Sans", sans-serif;
+  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
+  color: var(--ink);
+  background: var(--bg);
+  font-family: var(--sans);
   font-synthesis: none;
   text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
 }
 
-* { 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; }
+*, *::before, *::after { box-sizing: border-box; }
+html, body { margin: 0; padding: 0; }
+body {
+  min-width: 320px;
+  background: var(--bg);
+  color: var(--ink);
+  line-height: 1.55;
 }
+button, input, select, textarea { font: inherit; color: inherit; }
+a { color: inherit; text-decoration: none; }
+img, svg { display: block; max-width: 100%; }
+ul, ol { margin: 0; padding: 0; list-style: none; }
+h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; }
+p { margin: 0; }
 
+/* Reusable shell */
+.shell {
+  position: relative;
+  max-width: 84rem;
+  margin: 0 auto;
+  padding-inline: clamp(1.25rem, 4vw, 3.25rem);
+}
+.shell--narrow { max-width: 64rem; }
+
+/* Notebook grid backdrop */
+.notebook {
+  position: relative;
+}
+.notebook::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  background-image:
+    linear-gradient(to right, rgba(45, 55, 51, 0.05) 1px, transparent 1px),
+    linear-gradient(to bottom, rgba(45, 55, 51, 0.05) 1px, transparent 1px);
+  background-size: 56px 56px;
+  background-position: -1px -1px;
+  pointer-events: none;
+  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 85%);
+  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 85%);
+}
+@media (max-width: 540px) {
+  .notebook::before { background-size: 44px 44px; }
+}
+
+/* Eyebrow tag */
+.eyebrow {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.eyebrow::before {
+  content: "";
+  width: 1.25rem;
+  height: 1px;
+  background: var(--rule-strong);
+  display: inline-block;
+}
+.eyebrow--accent::before { background: var(--citron-deep); }
+
+/* Page section primitives */
+.section {
+  position: relative;
+  padding-block: clamp(3.5rem, 8vw, 7rem);
+  border-top: 1px solid var(--rule);
+}
+.section:first-of-type { border-top: 0; }
+.section__lead {
+  display: grid;
+  gap: 1.25rem;
+  max-width: 60rem;
+}
+.section__head {
+  display: grid;
+  gap: 1.5rem;
+  grid-template-columns: minmax(0, 1fr);
+  margin-bottom: clamp(2rem, 4vw, 3.5rem);
+}
+@media (min-width: 880px) {
+  .section__head {
+    grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
+    align-items: end;
+    gap: 3.5rem;
+  }
+}
+.section__title {
+  font-size: clamp(2.25rem, 5vw, 4.5rem);
+  line-height: 0.98;
+  letter-spacing: -0.02em;
+  max-width: 16ch;
+}
+.section__intro { color: var(--ink-soft); max-width: 36rem; font-size: 1.0625rem; }
+
+/* ===========================================================
+   Header
+   =========================================================== */
+.site-header {
+  position: sticky;
+  top: 0;
+  z-index: 30;
+  background: color-mix(in oklab, var(--bg) 88%, transparent);
+  backdrop-filter: blur(6px);
+  border-bottom: 1px solid var(--rule);
+}
+.site-header__inner {
+  display: grid;
+  grid-template-columns: auto 1fr auto;
+  align-items: center;
+  gap: 1.5rem;
+  padding-block: 0.85rem;
+}
+.brand {
+  display: inline-grid;
+  gap: 0.1rem;
+  text-decoration: none;
+  color: var(--ink);
+}
+.brand strong {
+  font-family: var(--serif);
+  font-size: 1.25rem;
+  font-weight: 600;
+  letter-spacing: 0.18em;
+}
+.brand span {
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+
+.site-nav {
+  display: none;
+  gap: 1.75rem;
+  justify-content: center;
+  font-family: var(--mono);
+  font-size: 0.78rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+}
+.site-nav a {
+  color: var(--ink-soft);
+  position: relative;
+  padding-block: 0.25rem;
+}
+.site-nav a::after {
+  content: "";
+  position: absolute;
+  inset: auto 0 -2px;
+  height: 1px;
+  background: var(--citron-deep);
+  transform: scaleX(0);
+  transform-origin: left;
+  transition: transform 220ms ease;
+}
+.site-nav a:hover::after,
+.site-nav a:focus-visible::after { transform: scaleX(1); }
+.site-nav a:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 4px;
+}
+
+.site-header__actions {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  justify-self: end;
+}
+@media (min-width: 880px) {
+  .site-nav { display: inline-flex; }
+}
+
+/* Buttons */
+.btn {
+  --btn-bg: var(--ink);
+  --btn-fg: var(--bg);
+  --btn-border: var(--ink);
+  display: inline-flex;
+  align-items: center;
+  gap: 0.6rem;
+  padding: 0.72rem 1.15rem;
+  border: 1px solid var(--btn-border);
+  background: var(--btn-bg);
+  color: var(--btn-fg);
+  font-family: var(--mono);
+  font-size: 0.78rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  cursor: pointer;
+  border-radius: 0;
+  transition: background 180ms ease, color 180ms ease, transform 180ms ease, border-color 180ms ease;
+  text-decoration: none;
+}
+.btn:hover { background: var(--citron); color: var(--ink); border-color: var(--citron-deep); }
+.btn:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 3px;
+}
+.btn--ghost {
+  --btn-bg: transparent;
+  --btn-fg: var(--ink);
+  --btn-border: var(--ink);
+}
+.btn--ghost:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
+.btn--small { padding: 0.5rem 0.8rem; font-size: 0.7rem; }
+
+.btn .arrow {
+  display: inline-block;
+  width: 1.1rem;
+  height: 1px;
+  background: currentColor;
+  position: relative;
+  transition: transform 200ms ease;
+}
+.btn .arrow::after {
+  content: "";
+  position: absolute;
+  right: 0;
+  top: 50%;
+  width: 0.5rem;
+  height: 0.5rem;
+  border-top: 1px solid currentColor;
+  border-right: 1px solid currentColor;
+  transform: translateY(-50%) rotate(45deg);
+}
+.btn:hover .arrow { transform: translateX(4px); }
+
+.menu-toggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.6rem 0.75rem;
+  border: 1px solid var(--ink);
+  background: transparent;
+  color: var(--ink);
+  font-family: var(--mono);
+  font-size: 0.72rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  cursor: pointer;
+}
+.menu-toggle__bars {
+  position: relative;
+  width: 1.1rem;
+  height: 0.75rem;
+}
+.menu-toggle__bars span {
+  position: absolute;
+  inset-inline: 0;
+  height: 1.5px;
+  background: currentColor;
+  transition: transform 220ms ease, opacity 180ms ease, top 220ms ease;
+}
+.menu-toggle__bars span:nth-child(1) { top: 0; }
+.menu-toggle__bars span:nth-child(2) { top: 50%; transform: translateY(-50%); }
+.menu-toggle__bars span:nth-child(3) { bottom: 0; top: auto; }
+.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(1) {
+  top: 50%;
+  transform: translateY(-50%) rotate(45deg);
+}
+.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(2) { opacity: 0; }
+.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(3) {
+  top: 50%;
+  transform: translateY(-50%) rotate(-45deg);
+}
+.menu-toggle:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 3px;
+}
+@media (min-width: 880px) {
+  .menu-toggle { display: none; }
+}
+
+/* Mobile menu */
+.mobile-menu {
+  display: grid;
+  gap: 1rem;
+  padding: 1rem 0 1.5rem;
+  border-top: 1px solid var(--rule);
+  background: var(--bg);
+}
+.mobile-menu a {
+  font-family: var(--serif);
+  font-size: 1.5rem;
+  letter-spacing: -0.01em;
+  color: var(--ink);
+  padding: 0.4rem 0;
+}
+.mobile-menu a:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 4px;
+}
+.mobile-menu__meta {
+  display: grid;
+  gap: 0.35rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+  padding-top: 0.75rem;
+  border-top: 1px solid var(--rule-soft);
+}
+@media (min-width: 880px) {
+  .mobile-menu { display: none !important; }
+}
+
+/* ===========================================================
+   Hero
+   =========================================================== */
+.hero {
+  position: relative;
+  padding-block: clamp(3rem, 6vw, 5.5rem) clamp(3rem, 6vw, 5rem);
+  overflow: hidden;
+}
+.hero__grid {
+  display: grid;
+  gap: clamp(1.5rem, 4vw, 3rem);
+  grid-template-columns: minmax(0, 1fr);
+  align-items: stretch;
+}
+@media (min-width: 880px) {
+  .hero__grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
+}
+.hero__copy {
+  display: grid;
+  align-content: center;
+  gap: 1.5rem;
+  max-width: 38rem;
+}
+.hero h1 {
+  font-size: clamp(2.75rem, 8.4vw, 6.5rem);
+  line-height: 0.92;
+  letter-spacing: -0.035em;
+}
+.hero__body {
+  color: var(--ink-soft);
+  font-size: clamp(1.05rem, 1.7vw, 1.2rem);
+  max-width: 36rem;
+  line-height: 1.55;
+}
+.hero__ctas {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  margin-top: 0.5rem;
+}
+.hero__availability {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  font-family: var(--mono);
+  font-size: 0.72rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.hero__availability::before {
+  content: "";
+  width: 0.5rem;
+  height: 0.5rem;
+  background: var(--citron);
+  border: 1px solid var(--citron-deep);
+  display: inline-block;
+}
+.hero__panel {
+  position: relative;
+  border: 1px solid var(--rule-strong);
+  background: var(--bg-card);
+  display: grid;
+  grid-template-rows: auto 1fr auto;
+  min-height: 320px;
+}
+.hero__panel-header,
+.hero__panel-footer {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0.6rem 0.85rem;
+  border-bottom: 1px solid var(--rule);
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.hero__panel-footer { border-top: 1px solid var(--rule); border-bottom: 0; }
+.hero__panel-body {
+  position: relative;
+  background: #24312e;
+  overflow: hidden;
+}
+.hero__panel-body svg {
+  width: 100%;
+  height: 100%;
+  min-height: 240px;
+}
+.hero__panel-body::after {
+  content: "";
+  position: absolute;
+  inset: 0;
+  background:
+    linear-gradient(transparent 0 calc(100% - 1px), rgba(213, 255, 67, 0.12) 100%),
+    linear-gradient(90deg, transparent 0 calc(100% - 1px), rgba(213, 255, 67, 0.12) 100%);
+  background-size: 56px 56px;
+  pointer-events: none;
+  mix-blend-mode: screen;
+}
+.hero__panel-tag {
+  position: absolute;
+  z-index: 1;
+  background: var(--citron);
+  color: var(--ink);
+  padding: 0.25rem 0.5rem;
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  border: 1px solid var(--citron-deep);
+}
+.hero__panel-tag--tl { top: 12px; left: 12px; }
+.hero__panel-tag--br { bottom: 12px; right: 12px; background: var(--ink); color: var(--bg); border-color: var(--ink); }
+@media (min-width: 880px) {
+  .hero__panel { min-height: 100%; }
+}
+
+/* ===========================================================
+   Service explorer
+   =========================================================== */
+.services__layout {
+  display: grid;
+  gap: 2rem;
+}
+@media (min-width: 1080px) {
+  .services__layout { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 2.5rem; align-items: start; }
+}
+.filters {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  padding-block: 1rem;
+  border-block: 1px solid var(--rule);
+  background: var(--bg);
+}
+.filter {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.45rem;
+  padding: 0.55rem 0.95rem;
+  border: 1px solid var(--rule-strong);
+  background: transparent;
+  color: var(--ink);
+  font-family: var(--mono);
+  font-size: 0.72rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  cursor: pointer;
+  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
+}
+.filter__dot {
+  width: 0.45rem;
+  height: 0.45rem;
+  border: 1px solid currentColor;
+  display: inline-block;
+}
+.filter:hover {
+  border-color: var(--ink);
+  background: var(--ink);
+  color: var(--bg);
+}
+.filter:hover .filter__dot { border-color: var(--citron); background: var(--citron); }
+.filter[aria-pressed="true"] {
+  background: var(--ink);
+  color: var(--bg);
+  border-color: var(--ink);
+}
+.filter[aria-pressed="true"] .filter__dot {
+  background: var(--citron);
+  border-color: var(--citron);
+}
+.filter:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 3px;
+}
+
+.service-count {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 1rem;
+  padding-block: 1rem;
+  border-bottom: 1px solid var(--rule);
+  font-family: var(--mono);
+  font-size: 0.78rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.service-count strong {
+  font-family: var(--serif);
+  font-size: 1.6rem;
+  letter-spacing: 0;
+  text-transform: none;
+  color: var(--ink);
+}
+.service-count__unit { font-size: 0.7rem; }
+
+.service-grid {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 0;
+  border: 1px solid var(--rule-strong);
+  background: var(--rule-strong);
+}
+.service-card {
+  position: relative;
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 1rem;
+  padding: 1.25rem;
+  background: var(--bg-card);
+  text-align: left;
+  border: 0;
+  cursor: pointer;
+  color: inherit;
+  font: inherit;
+  transition: background 180ms ease, transform 180ms ease;
+  width: 100%;
+}
+.service-card[aria-pressed="true"] {
+  background: var(--ink);
+  color: var(--bg);
+}
+.service-card[aria-pressed="true"] .service-card__discipline { color: var(--citron); }
+.service-card[aria-pressed="true"] .service-card__summary { color: rgba(241, 239, 231, 0.78); }
+.service-card[aria-pressed="true"] .media-frame { border-color: rgba(241, 239, 231, 0.18); }
+.service-card[aria-pressed="true"] .media-frame__fallback {
+  background: rgba(241, 239, 231, 0.06);
+  border-color: rgba(241, 239, 231, 0.18);
+  color: var(--bg);
+}
+.service-card:hover { background: var(--bg-soft); }
+.service-card[aria-pressed="true"]:hover { background: var(--ink-soft); }
+.service-card:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: -2px;
+  z-index: 1;
+}
+.service-card__top {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.75rem;
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.service-card__index {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+  color: var(--ink-mute);
+}
+.service-card__index::before {
+  content: "";
+  width: 0.4rem;
+  height: 1px;
+  background: currentColor;
+}
+.service-card__discipline {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  color: var(--ink-soft);
+}
+.service-card__discipline::before {
+  content: "";
+  width: 0.4rem;
+  height: 0.4rem;
+  background: var(--citron);
+  display: inline-block;
+}
+.service-card__title {
+  font-family: var(--serif);
+  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
+  line-height: 1.1;
+  letter-spacing: -0.01em;
+  color: inherit;
+  max-width: 22ch;
+  word-wrap: break-word;
+  overflow-wrap: break-word;
+}
+.service-card__summary {
+  font-size: 0.95rem;
+  color: var(--ink-soft);
+  line-height: 1.5;
+}
+.service-card__cta {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: inherit;
+  border-top: 1px solid currentColor;
+  padding-top: 0.6rem;
+  margin-top: 0.2rem;
+  opacity: 0.85;
+}
+.service-card[aria-pressed="true"] .service-card__cta { border-color: var(--citron); color: var(--citron); opacity: 1; }
+.service-card__cta .arrow {
+  display: inline-block;
+  width: 1rem;
+  height: 1px;
+  background: currentColor;
+  position: relative;
+  transition: transform 180ms ease;
+}
+.service-card__cta .arrow::after {
+  content: "";
+  position: absolute;
+  right: 0;
+  top: 50%;
+  width: 0.4rem;
+  height: 0.4rem;
+  border-top: 1px solid currentColor;
+  border-right: 1px solid currentColor;
+  transform: translateY(-50%) rotate(45deg);
+}
+.service-card:hover .service-card__cta .arrow,
+.service-card:focus-visible .service-card__cta .arrow { transform: translateX(4px); }
+
+@media (min-width: 560px) {
+  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+}
+@media (min-width: 880px) {
+  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+}
+
+/* Media frame */
+.media-frame {
+  position: relative;
+  display: block;
+  width: 100%;
+  aspect-ratio: 4 / 3;
+  background: #24312e;
+  border: 1px solid var(--rule-strong);
+  overflow: hidden;
+}
+.media-frame img,
+.media-frame svg {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
+.media-frame__fallback {
+  position: absolute;
+  inset: 0;
+  display: grid;
+  align-content: end;
+  gap: 0.4rem;
+  padding: 0.9rem 1rem;
+  background: var(--bg-soft);
+  color: var(--ink);
+  border: 1px solid var(--rule-strong);
+}
+.media-frame__fallback::before {
+  content: "REF. PQ-006";
+  font-family: var(--mono);
+  font-size: 0.6rem;
+  letter-spacing: 0.24em;
+  color: var(--ink-mute);
+}
+.media-frame__fallback-tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  font-family: var(--mono);
+  font-size: 0.6rem;
+  letter-spacing: 0.24em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+  margin-bottom: 0.3rem;
+}
+.media-frame__fallback-tag::before {
+  content: "";
+  width: 0.45rem;
+  height: 0.45rem;
+  background: var(--citron);
+  border: 1px solid var(--citron-deep);
+  display: inline-block;
+}
+.media-frame__fallback-title {
+  font-family: var(--serif);
+  font-size: 1.1rem;
+  line-height: 1.15;
+  color: var(--ink);
+  max-width: 22ch;
+}
+.media-frame__fallback-schematic {
+  position: absolute;
+  inset: 0;
+  pointer-events: none;
+  opacity: 0.45;
+}
+
+/* Service detail */
+.service-detail {
+  position: sticky;
+  top: calc(4.5rem + 1px);
+  border: 1px solid var(--rule-strong);
+  background: var(--bg-card);
+  display: grid;
+  grid-template-rows: auto auto 1fr;
+  min-height: 24rem;
+}
+.service-detail__head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.75rem;
+  padding: 0.75rem 1rem;
+  border-bottom: 1px solid var(--rule);
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.service-detail__body {
+  display: grid;
+  gap: 1.25rem;
+  padding: 1.25rem;
+}
+.service-detail__meta {
+  display: flex;
+  align-items: center;
+  gap: 0.6rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.service-detail__meta::before {
+  content: "";
+  width: 0.45rem;
+  height: 0.45rem;
+  background: var(--citron);
+  border: 1px solid var(--citron-deep);
+  display: inline-block;
+}
+.service-detail__title {
+  font-size: clamp(1.5rem, 2.6vw, 2rem);
+  line-height: 1.05;
+  letter-spacing: -0.015em;
+  max-width: 22ch;
+}
+.service-detail__description { color: var(--ink-soft); font-size: 1rem; }
+.service-detail__sub {
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+  margin-bottom: 0.5rem;
+}
+.service-detail__list {
+  display: grid;
+  gap: 0.4rem;
+  border-top: 1px solid var(--rule);
+  padding-top: 1rem;
+}
+.service-detail__list li {
+  display: grid;
+  grid-template-columns: 1.75rem 1fr;
+  gap: 0.6rem;
+  font-size: 0.95rem;
+  color: var(--ink);
+}
+.service-detail__list li::before {
+  content: attr(data-index);
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  color: var(--ink-mute);
+  align-self: start;
+  margin-top: 0.18rem;
+}
+.service-detail__response {
+  border-top: 1px solid var(--rule);
+  padding-top: 1rem;
+  display: grid;
+  gap: 0.4rem;
+}
+.service-detail__response p {
+  color: var(--ink);
+  font-size: 0.95rem;
+  max-width: 38ch;
+}
+.service-detail__cta {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  margin-top: 0.5rem;
+}
+.service-detail__empty {
+  display: grid;
+  gap: 0.75rem;
+  padding: 1.5rem 1.25rem;
+  color: var(--ink-mute);
+}
+.service-detail__empty p { font-size: 0.95rem; }
+.service-detail__empty-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.75rem;
+  padding: 0.75rem 1rem;
+  border-bottom: 1px solid var(--rule);
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+
+/* ===========================================================
+   Approach
+   =========================================================== */
+.approach__grid {
+  display: grid;
+  gap: 0;
+  border: 1px solid var(--rule-strong);
+  background: var(--rule-strong);
+}
+.principle {
+  display: grid;
+  grid-template-columns: 5rem 1fr;
+  gap: 1.5rem;
+  padding: clamp(1.5rem, 3vw, 2.25rem);
+  background: var(--bg-card);
+}
+.principle__num {
+  font-family: var(--mono);
+  font-size: 0.85rem;
+  letter-spacing: 0.2em;
+  color: var(--ink-mute);
+  align-self: start;
+  border-top: 1px solid var(--rule);
+  padding-top: 0.5rem;
+}
+.principle__title {
+  font-size: clamp(1.5rem, 2.4vw, 1.85rem);
+  line-height: 1.1;
+  margin-bottom: 0.5rem;
+}
+.principle__body {
+  color: var(--ink-soft);
+  font-size: 1rem;
+  max-width: 36rem;
+}
+@media (min-width: 720px) {
+  .approach__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
+  .principle { grid-template-columns: 1fr; gap: 0.75rem; border-left: 1px solid var(--rule); }
+  .principle:first-child { border-left: 0; }
+}
+
+/* ===========================================================
+   Close / footer
+   =========================================================== */
+.close {
+  position: relative;
+}
+.close__grid {
+  display: grid;
+  gap: 2rem;
+  align-items: end;
+  grid-template-columns: 1fr;
+}
+@media (min-width: 880px) {
+  .close__grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 3rem; }
+}
+.close h2 {
+  font-size: clamp(2rem, 5vw, 3.5rem);
+  line-height: 1;
+  max-width: 16ch;
+}
+.close__body { color: var(--ink-soft); font-size: 1.05rem; max-width: 34rem; }
+.close__panel {
+  border: 1px solid var(--rule-strong);
+  padding: 1.25rem;
+  background: var(--bg-card);
+  display: grid;
+  gap: 1rem;
+}
+.close__panel dl {
+  margin: 0;
+  display: grid;
+  grid-template-columns: auto 1fr;
+  gap: 0.5rem 1.25rem;
+  font-family: var(--mono);
+  font-size: 0.72rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.close__panel dt { color: var(--ink-mute); }
+.close__panel dd { margin: 0; color: var(--ink); }
+
+.site-footer {
+  border-top: 1px solid var(--rule);
+  padding-block: 2rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+.site-footer__inner {
+  display: grid;
+  gap: 0.75rem;
+  grid-template-columns: 1fr;
+  align-items: center;
+}
+@media (min-width: 720px) {
+  .site-footer__inner { grid-template-columns: 1fr auto 1fr; align-items: center; }
+  .site-footer__inner > :nth-child(2) { justify-self: center; }
+  .site-footer__inner > :last-child { justify-self: end; }
+}
+
+/* ===========================================================
+   Dialog
+   =========================================================== */
+.dialog-backdrop {
+  position: fixed;
+  inset: 0;
+  background: rgba(29, 41, 38, 0.62);
+  z-index: 50;
+  display: grid;
+  place-items: end center;
+  padding: 1rem;
+}
+@media (min-width: 720px) {
+  .dialog-backdrop { place-items: center; padding: 2rem; }
+}
+.dialog {
+  position: relative;
+  background: var(--bg);
+  border: 1px solid var(--ink);
+  width: min(100%, 44rem);
+  max-height: calc(100dvh - 2rem);
+  display: grid;
+  grid-template-rows: auto 1fr auto;
+  overflow: hidden;
+}
+@media (min-width: 720px) {
+  .dialog { max-height: calc(100dvh - 4rem); }
+}
+.dialog__head {
+  display: grid;
+  grid-template-columns: 1fr auto;
+  align-items: start;
+  gap: 1rem;
+  padding: 1.25rem 1.5rem 1rem;
+  border-bottom: 1px solid var(--rule);
+  background: var(--bg-soft);
+}
+.dialog__title {
+  font-size: clamp(1.5rem, 2.6vw, 1.85rem);
+  line-height: 1.05;
+  letter-spacing: -0.01em;
+  margin-bottom: 0.35rem;
+}
+.dialog__intro { color: var(--ink-soft); font-size: 0.95rem; max-width: 38rem; }
+.dialog__close {
+  appearance: none;
+  background: transparent;
+  border: 1px solid var(--ink);
+  width: 2.25rem;
+  height: 2.25rem;
+  display: inline-grid;
+  place-items: center;
+  cursor: pointer;
+  font-family: var(--mono);
+}
+.dialog__close:hover { background: var(--ink); color: var(--bg); }
+.dialog__close:focus-visible { outline: 2px solid var(--citron-deep); outline-offset: 3px; }
+.dialog__body {
+  padding: 1.25rem 1.5rem 1.5rem;
+  overflow: auto;
+  display: grid;
+  gap: 1.25rem;
+}
+.dialog__foot {
+  padding: 1rem 1.5rem;
+  border-top: 1px solid var(--rule);
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem;
+  justify-content: space-between;
+  align-items: center;
+  background: var(--bg-soft);
+}
+.dialog__meta {
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+
+.field {
+  display: grid;
+  gap: 0.4rem;
+}
+.field label {
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  color: var(--ink-soft);
+}
+.field input,
+.field select,
+.field textarea {
+  appearance: none;
+  width: 100%;
+  background: var(--bg-card);
+  color: var(--ink);
+  border: 1px solid var(--rule-strong);
+  padding: 0.7rem 0.85rem;
+  font-family: var(--sans);
+  font-size: 1rem;
+  border-radius: 0;
+  line-height: 1.4;
+  transition: border-color 160ms ease, background 160ms ease;
+}
+.field input:focus-visible,
+.field select:focus-visible,
+.field textarea:focus-visible {
+  outline: 2px solid var(--citron-deep);
+  outline-offset: 2px;
+  border-color: var(--ink);
+}
+.field textarea { resize: vertical; min-height: 7rem; }
+.field select {
+  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%),
+    linear-gradient(135deg, var(--ink) 50%, transparent 50%);
+  background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;
+  background-size: 6px 6px, 6px 6px;
+  background-repeat: no-repeat;
+  padding-right: 2.25rem;
+}
+.field--error input,
+.field--error select,
+.field--error textarea { border-color: var(--warn); background: #f5eae3; }
+.field__error {
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--warn);
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+}
+.field__error::before {
+  content: "";
+  width: 0.45rem;
+  height: 0.45rem;
+  background: var(--warn);
+  display: inline-block;
+}
+.field__hint {
+  font-family: var(--mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--ink-mute);
+}
+
+.success {
+  display: grid;
+  gap: 0.85rem;
+  padding: 1rem 0 0;
+}
+.success__tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  background: var(--citron);
+  border: 1px solid var(--citron-deep);
+  color: var(--ink);
+  padding: 0.35rem 0.6rem;
+  font-family: var(--mono);
+  font-size: 0.7rem;
+  letter-spacing: 0.2em;
+  text-transform: uppercase;
+  width: max-content;
+}
+.success__tag::before {
+  content: "";
+  width: 0.5rem;
+  height: 0.5rem;
+  background: var(--ink);
+  display: inline-block;
+}
+.success__body {
+  font-size: 1.05rem;
+  color: var(--ink);
+  max-width: 36rem;
+}
+.success__close {
+  width: max-content;
+}
+
+/* ===========================================================
+   Motion overrides
+   =========================================================== */
 @media (prefers-reduced-motion: reduce) {
   html { scroll-behavior: auto; }
-  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
+  *, *::before, *::after {
+    animation-duration: 0.001ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.001ms !important;
+    scroll-behavior: auto !important;
+  }
 }