/* Hallmark · pre-emit critique: P5 H4 E4 S5 R5 V4
 * genre: editorial · macrostructure: Photographic · theme: Brutal Industrial
 * audience: factory maintenance teams and custom-part buyers · use: send a drawing or call
 * tone: technical and direct · enrichment: E8 original generated photography, asymmetrically cropped and colour-graded
 * generated: OpenAI image generation · post-processed to WebP and art-directed crops
 * nav: reference-led masthead rail · footer: Ft1 Mast-headed · studied: no
 * contrast: pass (40–41) · honest: pass (46) · tokens: pass (48) · mobile: pass (34, 49–57)
 */

@font-face {
  font-family: "Bai Jamjuree";
  src: url("assets/fonts/BaiJamjuree-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Bai Jamjuree";
  src: url("assets/fonts/BaiJamjuree-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans Thai";
  src: url("assets/fonts/IBMPlexSansThai-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans Thai";
  src: url("assets/fonts/IBMPlexSansThai-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  background: var(--color-paper);
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: var(--color-transparent);
}

button {
  font: inherit;
}

h1,
h2,
h3,
p,
figure,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3 {
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-style: normal;
}

.tnum {
  font-variant-numeric: tabular-nums;
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  z-index: var(--z-tooltip);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

:where(a, button):focus-visible {
  outline: 3px solid var(--color-focus-active);
  outline-offset: 4px;
}

.hero,
.site-footer,
.mobile-contact {
  --color-focus-active: var(--color-focus-on-dark);
}

:where(button:disabled, .button[aria-disabled="true"], a[aria-disabled="true"]) {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.section-shell,
.nav-shell,
.site-footer__inner,
.proof-strip__inner {
  width: min(var(--content-max), calc(100% - (var(--page-gutter) * 2)));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-3xl);
}

#home,
#about,
#services,
#contact {
  scroll-margin-block-start: calc(var(--nav-height) + var(--space-md));
}

.site-header {
  position: relative;
  z-index: var(--z-sticky-nav);
  background: var(--color-paper);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.nav-shell {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.brand-copy {
  min-width: 0;
  display: grid;
  line-height: 1.15;
}

.brand-copy strong {
  font-family: var(--font-display);
  font-size: clamp(1rem, 3.8vw, 1.35rem);
  white-space: nowrap;
}

.brand-copy small {
  margin-block-start: var(--space-2xs);
  color: var(--color-muted);
  font-size: var(--text-xs);
  white-space: nowrap;
}

.menu-toggle {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  border: var(--rule-hair) solid var(--color-ink);
  border-radius: var(--radius-none);
  background: var(--color-transparent);
  color: var(--color-ink);
  cursor: pointer;
}

.menu-toggle__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: clip;
  clip-path: inset(50%);
}

.menu-toggle__lines,
.menu-toggle__lines::before,
.menu-toggle__lines::after {
  width: 1.25rem;
  height: 2px;
  display: block;
  background: currentColor;
  content: "";
}

.menu-toggle__lines {
  position: relative;
}

.menu-toggle__lines::before,
.menu-toggle__lines::after {
  position: absolute;
  inset-inline-start: 0;
  transition: transform var(--dur-short) var(--ease-in-out);
}

.menu-toggle__lines::before {
  transform: translateY(-0.4rem);
}

.menu-toggle__lines::after {
  transform: translateY(0.4rem);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines {
  background: var(--color-transparent);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines::before {
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__lines::after {
  transform: rotate(-45deg);
}

.primary-nav {
  position: absolute;
  inset-block-start: 100%;
  inset-inline: 0;
  display: none;
  padding: var(--space-md) var(--page-gutter) var(--space-lg);
  background: var(--color-paper);
  border-block-end: var(--rule-heavy) solid var(--color-ink);
}

.primary-nav.is-open {
  display: grid;
}

.primary-nav a {
  min-height: 3rem;
  display: flex;
  align-items: center;
  border-block-end: var(--rule-hair) solid var(--color-rule);
  font-family: var(--font-display);
  font-weight: 700;
  white-space: nowrap;
}

.hero {
  position: relative;
  min-height: clamp(38rem, 78dvh, 52rem);
  overflow: clip;
  isolation: isolate;
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.hero__image,
.hero__shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__image {
  z-index: -3;
  object-fit: cover;
  object-position: 64% center;
  filter: saturate(0.78) contrast(1.08);
}

.hero__shade {
  z-index: -2;
  background: linear-gradient(90deg, var(--color-overlay) 0%, var(--color-overlay) 46%, var(--color-overlay-light) 100%);
}

.hero__content {
  width: min(var(--content-max), calc(100% - (var(--page-gutter) * 2)));
  min-height: clamp(38rem, 78dvh, 52rem);
  margin-inline: auto;
  padding-block: var(--space-2xl) var(--space-3xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: var(--space-lg);
}

.hero__brand {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero h1 {
  max-width: 11ch;
  font-size: var(--text-display);
  line-height: 1.03;
  letter-spacing: -0.035em;
}

.hero__lede {
  max-width: 53ch;
  color: var(--color-on-dark);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

.button {
  min-height: 3.25rem;
  padding-inline: var(--space-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--rule-heavy) solid var(--color-on-dark);
  border-radius: var(--radius-none);
  font-family: var(--font-display);
  font-weight: 700;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}

.button--accent {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.button--ghost {
  background: var(--color-transparent);
  color: var(--color-on-dark);
}

.button:active {
  transform: translateY(1px);
}

.hero__meta {
  width: min(100%, 38rem);
  margin-block-start: var(--space-sm);
  padding-block-start: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-on-dark-muted);
  font-family: var(--font-display);
  font-size: var(--text-sm);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  white-space: nowrap;
}

.hero__meta svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
}

.hero__caption {
  position: absolute;
  inset-inline-end: var(--page-gutter);
  inset-block-end: var(--space-md);
  color: var(--color-on-dark-muted);
  font-size: var(--text-xs);
}

.section-heading {
  max-width: 48rem;
  margin-block-end: var(--space-2xl);
}

.section-heading h2 {
  font-size: var(--text-display-small);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.section-heading p {
  max-width: 65ch;
  margin-block-start: var(--space-sm);
  color: var(--color-muted);
  font-size: var(--text-md);
}

.story-grid {
  display: grid;
  gap: var(--space-lg);
}

.story-main,
.story-side article {
  border: var(--rule-hair) solid var(--color-rule);
  background: var(--color-surface);
}

.story-main {
  padding: var(--space-xl);
}

.square-mark {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
  margin-block-end: var(--space-xl);
  background: var(--color-accent);
  box-shadow: 0.45rem 0.45rem 0 var(--color-paper-3);
}

.story-main h3,
.story-side h3 {
  font-size: var(--text-lg);
}

.story-main > p,
.story-side p {
  max-width: 64ch;
  margin-block-start: var(--space-md);
  color: var(--color-muted);
}

.legal-facts {
  margin-block-start: var(--space-xl);
  border-block-start: var(--rule-heavy) solid var(--color-ink);
}

.legal-facts div {
  padding-block: var(--space-sm);
  display: grid;
  gap: var(--space-2xs);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.legal-facts dt {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.legal-facts dd {
  font-family: var(--font-display);
  font-weight: 700;
}

.story-side {
  display: grid;
  gap: var(--space-lg);
}

.story-side article {
  min-height: 15rem;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.work-visual {
  display: grid;
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.work-visual figure {
  position: relative;
  min-height: 28rem;
}

.work-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-visual figcaption {
  position: absolute;
  inset-inline: var(--space-md);
  inset-block-end: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-dark);
  color: var(--color-on-dark-muted);
  font-size: var(--text-xs);
}

.work-principles {
  padding: var(--space-2xl) var(--page-gutter);
}

.work-principles h2 {
  max-width: 14ch;
  font-size: var(--text-2xl);
  line-height: 1.15;
}

.work-principles ul,
.service-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.work-principles ul {
  margin-block-start: var(--space-xl);
}

.work-principles li {
  padding-block: var(--space-md);
  display: grid;
  gap: var(--space-2xs);
  border-block-start: var(--rule-hair) solid var(--color-rule-dark);
}

.work-principles strong {
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.work-principles span {
  color: var(--color-on-dark-muted);
}

.standards {
  background: var(--color-paper-2);
}

.standards-grid {
  display: grid;
  gap: 0;
  border-block-start: var(--rule-heavy) solid var(--color-ink);
}

.standards-grid article {
  min-width: 0;
  padding: var(--space-xl) 0;
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.standard-index {
  display: block;
  margin-block-end: var(--space-xl);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
}

.standards-grid h3 {
  font-size: var(--text-lg);
}

.standards-grid p {
  max-width: 42ch;
  margin-block-start: var(--space-sm);
  color: var(--color-muted);
}

.proof-strip {
  padding-block: var(--space-xl);
  background: var(--color-dark-2);
  color: var(--color-on-dark);
}

.proof-strip__inner {
  display: grid;
  gap: var(--space-lg);
}

.proof-strip__inner div {
  display: grid;
  gap: var(--space-2xs);
}

.proof-strip strong {
  color: var(--color-focus-on-dark);
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.proof-strip span {
  color: var(--color-on-dark-muted);
  font-size: var(--text-sm);
}

.services {
  padding-block: var(--space-4xl) var(--space-3xl);
}

.section-heading--services::before,
.contact-heading::before {
  width: 3rem;
  height: var(--rule-heavy);
  display: block;
  margin-block-end: var(--space-md);
  background: var(--color-accent);
  content: "";
}

.service-grid {
  display: grid;
  gap: var(--space-lg);
}

.service-card {
  min-width: 0;
  display: grid;
  grid-template-rows: 13rem 1fr;
  border: var(--rule-hair) solid var(--color-rule);
  background: var(--color-surface);
}

.service-card__crop {
  background-image: linear-gradient(var(--color-overlay-light), var(--color-overlay-light)), url("assets/images/aod-machined-parts.webp");
  background-repeat: no-repeat;
  background-size: 180% auto;
}

.service-card__crop--left {
  background-position: 6% 54%;
}

.service-card__crop--center {
  background-position: 50% 56%;
}

.service-card__crop--right {
  background-position: 96% 52%;
}

.service-card__body {
  padding: var(--space-xl);
}

.service-index {
  display: block;
  margin-block-end: var(--space-xl);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-weight: 700;
}

.service-card h3 {
  font-size: var(--text-lg);
  line-height: 1.25;
}

.service-card p {
  margin-block-start: var(--space-md);
  color: var(--color-muted);
}

.service-card ul {
  margin-block-start: var(--space-lg);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.service-card li {
  position: relative;
  padding: var(--space-sm) 0 var(--space-sm) var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.service-card li::before {
  position: absolute;
  inset-inline-start: 0;
  color: var(--color-accent);
  content: "→";
}

.process {
  margin-block-start: var(--space-3xl);
  display: grid;
  gap: var(--space-xl);
}

.process > h2 {
  font-size: var(--text-2xl);
}

.process ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-block-start: var(--rule-heavy) solid var(--color-ink);
}

.process li {
  padding-block: var(--space-lg);
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.process li > span {
  color: var(--color-accent);
  font-family: var(--font-display);
  font-weight: 700;
}

.process h3 {
  font-size: var(--text-md);
}

.process p {
  margin-block-start: var(--space-2xs);
  color: var(--color-muted);
}

.contact {
  padding-block: var(--space-2xl) var(--space-4xl);
  background: var(--color-paper-2);
}

.contact-shell {
  display: grid;
}

.map-card {
  min-height: 22rem;
  position: relative;
  overflow: clip;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  background: var(--color-paper-3);
  border: var(--rule-hair) solid var(--color-rule);
  text-align: center;
  transition: transform var(--dur-micro) var(--ease-out);
}

.map-card__grid {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-image: linear-gradient(90deg, var(--color-rule) var(--rule-hair), var(--color-transparent) var(--rule-hair)), linear-gradient(var(--color-rule) var(--rule-hair), var(--color-transparent) var(--rule-hair));
  background-size: 3rem 3rem;
}

.map-card::after {
  position: absolute;
  width: 8rem;
  height: 8rem;
  border: var(--rule-heavy) solid var(--color-accent);
  transform: rotate(45deg);
  content: "";
}

.map-card > *:not(.map-card__grid) {
  position: relative;
  z-index: var(--z-raised);
}

.map-card svg {
  width: 2.5rem;
  height: 2.5rem;
  margin-block-end: var(--space-xs);
  fill: var(--color-paper-3);
  stroke: var(--color-ink);
  stroke-width: 1.5;
}

.map-card strong {
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.map-card span:last-child {
  color: var(--color-muted);
}

.map-card:active {
  transform: translateY(1px);
}

.contact-heading {
  margin-block: var(--space-3xl) var(--space-xl);
}

.contact-grid {
  display: grid;
  gap: var(--space-sm);
}

.contact-item {
  min-width: 0;
  min-height: 8rem;
  padding: var(--space-lg);
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: start;
  gap: var(--space-md);
  background: var(--color-surface);
  border: var(--rule-hair) solid var(--color-rule);
  transition: transform var(--dur-micro) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}

.contact-item__icon {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.contact-item svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.contact-item > span:last-child {
  min-width: 0;
  display: grid;
  gap: var(--space-2xs);
}

.contact-item small {
  color: var(--color-muted);
}

.contact-item strong {
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-size: var(--text-base);
}

.contact-item:active {
  transform: translateY(1px);
}

.site-footer {
  padding-block: var(--space-3xl) calc(var(--space-3xl) + env(safe-area-inset-bottom));
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-xl);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.1;
}

.footer-brand + p {
  margin-block-start: var(--space-sm);
  color: var(--color-on-dark-muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-lg);
}

.site-footer nav a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.site-footer__legal {
  padding-block-start: var(--space-lg);
  display: grid;
  gap: var(--space-xs);
  border-block-start: var(--rule-hair) solid var(--color-rule-dark);
  color: var(--color-on-dark-muted);
  font-size: var(--text-sm);
}

.legal-main {
  background: var(--color-paper);
}

.legal-hero {
  padding-block: var(--space-3xl);
  background: var(--color-dark);
  color: var(--color-on-dark);
}

.legal-hero p {
  margin-block-end: var(--space-sm);
  color: var(--color-focus-on-dark);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.legal-hero h1 {
  max-width: 18ch;
  overflow-wrap: anywhere;
  font-size: var(--text-display-small);
  line-height: 1.08;
}

.legal-hero span {
  display: block;
  margin-block-start: var(--space-md);
  color: var(--color-on-dark-muted);
}

.legal-document {
  max-width: 68rem;
  padding-block: var(--space-2xl) var(--space-4xl);
}

.legal-document section {
  padding-block: var(--space-xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.legal-document h2 {
  max-width: 28ch;
  overflow-wrap: anywhere;
  font-size: var(--text-xl);
  line-height: 1.2;
}

.legal-document p,
.legal-document li {
  max-width: 72ch;
  color: var(--color-muted);
}

.legal-document p,
.legal-document ul,
.legal-document ol,
.legal-contact-list,
.legal-table-wrap {
  margin-block-start: var(--space-md);
}

.legal-document ul,
.legal-document ol {
  padding-inline-start: var(--space-lg);
}

.legal-document li + li {
  margin-block-start: var(--space-xs);
}

.legal-document strong {
  color: var(--color-ink);
}

.legal-document a:not(.button) {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.legal-contact-list {
  border-block-start: var(--rule-heavy) solid var(--color-ink);
}

.legal-contact-list div {
  padding-block: var(--space-sm);
  display: grid;
  gap: var(--space-2xs);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.legal-contact-list dt {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.legal-contact-list dd {
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-weight: 700;
}

.legal-table-wrap {
  overflow-x: auto;
  border: var(--rule-hair) solid var(--color-rule);
}

.legal-table-wrap:focus-visible {
  outline: 3px solid var(--color-focus-on-light);
  outline-offset: var(--space-2xs);
}

.legal-document table {
  width: 100%;
  min-width: 42rem;
  border-collapse: collapse;
}

.legal-document th,
.legal-document td {
  padding: var(--space-md);
  vertical-align: top;
  border-block-end: var(--rule-hair) solid var(--color-rule);
  text-align: start;
}

.legal-document th {
  background: var(--color-paper-2);
  font-family: var(--font-display);
}

.legal-document td {
  color: var(--color-muted);
}

.legal-back {
  margin-block-start: var(--space-xl);
}

.mobile-contact {
  position: fixed;
  z-index: var(--z-sticky);
  inset-inline: 0;
  inset-block-end: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-block-end: env(safe-area-inset-bottom);
  background: var(--color-dark);
  color: var(--color-on-dark);
  border-block-start: var(--rule-hair) solid var(--color-rule-dark);
}

.mobile-contact a {
  min-height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  white-space: nowrap;
}

.mobile-contact a + a {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

@media (hover: hover) and (pointer: fine) {
  .primary-nav a:hover,
  .site-footer nav a:hover {
    color: var(--color-accent);
  }

  .button--accent:hover {
    border-color: var(--color-on-dark);
    background: var(--color-on-dark);
    color: var(--color-dark);
    transform: translateY(-1px);
  }

  .button--ghost:hover {
    background: var(--color-on-dark);
    color: var(--color-dark);
    transform: translateY(-1px);
  }

  .map-card:hover,
  .contact-item:hover {
    transform: translateY(-1px);
  }

  .contact-item:hover {
    border-color: var(--color-accent);
  }
}

@media (min-width: 40rem) {
  .proof-strip__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .story-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .standards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .standards-grid article {
    padding-inline: var(--space-lg);
  }

  .standards-grid article:nth-child(odd) {
    padding-inline-start: 0;
    border-inline-end: var(--rule-hair) solid var(--color-rule);
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-card--narrow {
    grid-column: 1 / -1;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    grid-template-rows: 1fr;
  }

  .process {
    grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  }

  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-item--address {
    grid-column: 1 / -1;
  }
}

@media (min-width: 60rem) {
  .site-header {
    position: sticky;
    inset-block-start: 0;
  }

  .menu-toggle {
    display: none;
  }

  .primary-nav,
  .primary-nav.is-open {
    position: static;
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding: 0;
    background: var(--color-transparent);
    border: 0;
  }

  .primary-nav a {
    min-height: var(--nav-height);
    border: 0;
    font-size: var(--text-sm);
    font-weight: 400;
  }

  .hero__content {
    padding-inline-end: 48%;
  }

  .work-visual {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .work-visual figure {
    min-height: 40rem;
  }

  .work-principles {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .proof-strip__inner {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .standards-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .standards-grid article,
  .standards-grid article:nth-child(odd) {
    padding-inline: var(--space-lg);
    border-inline-end: var(--rule-hair) solid var(--color-rule);
  }

  .standards-grid article:first-child {
    padding-inline-start: 0;
  }

  .standards-grid article:last-child {
    padding-inline-end: 0;
    border-inline-end: 0;
  }

  .service-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.05fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .service-card--raised {
    margin-block-start: var(--space-xl);
  }

  .service-card--narrow {
    grid-column: auto;
    grid-template-columns: 1fr;
    grid-template-rows: 13rem 1fr;
  }

  .contact-grid {
    grid-template-columns: 0.8fr 1fr 1.2fr 1.5fr;
  }

  .contact-item--address {
    grid-column: auto;
  }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .site-footer nav {
    justify-content: flex-end;
  }

  .site-footer__legal {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto;
  }

  .mobile-contact {
    display: none;
  }
}

@media (min-width: 90rem) {
  .hero__content {
    padding-inline-end: 52%;
  }
}

.promo-rail {
  display: none;
  width: 100%;
  background: var(--color-paper);
  line-height: 0;
}

.promo-rail[hidden],
.promo-slide[hidden] {
  display: none;
}

.promo-stage,
.promo-slide,
.promo-link {
  width: 100%;
}

.promo-stage {
  overflow: hidden;
}

.promo-slides {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  overscroll-behavior-inline: contain;
}

.promo-slides::-webkit-scrollbar {
  display: none;
}

.promo-slides:focus-visible {
  outline: 4px solid var(--color-focus-on-light);
  outline-offset: -4px;
}

.promo-slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
}

.promo-link {
  display: block;
}

.promo-link:focus-visible {
  outline: 4px solid var(--color-focus-on-light);
  outline-offset: -4px;
}

.promo-slide img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--color-paper);
}

@media (max-width: 47.5rem) {
  .promo-rail:not([hidden]) {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
}