:root {
  color-scheme: light;
  --ink: #101a2c;
  --ink-soft: #526079;
  --navy: #19276f;
  --navy-deep: #101b52;
  --solid-blue: #19276f;
  --solid-blue-hover: #101b52;
  --blue-soft: #e9edff;
  --blue-wash: #f3f5ff;
  --surface: #f7f8fb;
  --surface-raised: #ffffff;
  --surface-muted: #edf0f5;
  --line: #d7dce7;
  --line-strong: #b6bfce;
  --success: #1e6b4f;
  --danger: #b53b3b;
  --metal: #dfe3e9;
  --focus: #4867e8;
  --shadow: 0 18px 46px rgba(20, 33, 80, 0.12);
  --radius-small: 8px;
  --radius-medium: 14px;
  --radius-large: 20px;
  --shell: min(1440px, calc(100% - 48px));
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f1f3f8;
  --ink-soft: #aeb8ca;
  --navy: #7f96ff;
  --navy-deep: #9cacff;
  --solid-blue: #3f55b2;
  --solid-blue-hover: #5166c7;
  --blue-soft: #25315e;
  --blue-wash: #171e38;
  --surface: #0f1420;
  --surface-raised: #171e2b;
  --surface-muted: #202838;
  --line: #343f52;
  --line-strong: #4f5b70;
  --success: #75c9a8;
  --danger: #ff9898;
  --metal: #2b3442;
  --focus: #9cacff;
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family:
    "Avenir Next",
    "Segoe UI",
    Helvetica,
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

button {
  cursor: pointer;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius-small);
  background: var(--surface-raised);
  color: var(--ink);
  transform: translateY(-160%);
}

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

.service-strip {
  background: var(--solid-blue);
  color: #f6f7ff;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.service-strip__inner {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  scrollbar-width: none;
}

.service-strip__inner::-webkit-scrollbar {
  display: none;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-raised) 94%, transparent);
  backdrop-filter: blur(14px);
}

.header-main {
  min-height: 82px;
  display: grid;
  grid-template-columns: 210px minmax(280px, 660px) auto;
  align-items: center;
  gap: 28px;
}

.brand {
  width: 188px;
}

.brand img {
  width: 100%;
  height: auto;
}

.header-search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  min-height: 48px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-small);
  background: var(--surface-raised);
}

.header-search:focus-within {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 20%, transparent);
}

.header-search input {
  min-width: 0;
  border: 0;
  padding: 0 16px;
  background: transparent;
  color: var(--ink);
  outline: 0;
}

.header-search input::placeholder {
  color: color-mix(in srgb, var(--ink-soft) 86%, transparent);
  opacity: 1;
}

.header-search button {
  border: 0;
  border-left: 1px solid var(--line);
  padding: 0 18px;
  background: var(--surface-muted);
  color: var(--ink);
  font-weight: 750;
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  white-space: nowrap;
  color: var(--ink-soft);
  font-size: 0.83rem;
  font-weight: 700;
}

.header-tools a:hover {
  color: var(--navy);
}

.theme-toggle {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  font-weight: 700;
}

.theme-toggle:hover {
  color: var(--navy);
}

.cart-link span {
  display: inline-grid;
  width: 22px;
  height: 22px;
  margin-left: 4px;
  place-items: center;
  border-radius: 50%;
  background: var(--solid-blue);
  color: #f6f7ff;
  font-size: 0.72rem;
}

.nav-wrap {
  border-top: 1px solid var(--line);
}

.nav-row {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2vw, 34px);
  flex: 1;
  font-size: 0.88rem;
  font-weight: 680;
}

.primary-nav a {
  color: var(--ink-soft);
}

.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav .nav-strong {
  color: var(--ink);
}

.nav-strong::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 8px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}

.quote-link {
  color: var(--navy);
  font-size: 0.86rem;
  font-weight: 800;
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(
      circle at 7% 22%,
      color-mix(in srgb, var(--blue-soft) 62%, transparent),
      transparent 28%
    ),
    var(--surface);
}

.hero-grid {
  min-height: min(690px, calc(100dvh - 168px));
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(430px, 1.05fr);
  align-items: center;
  gap: clamp(48px, 6vw, 104px);
  padding-block: clamp(56px, 7vw, 92px);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--navy);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(3rem, 5vw, 5.2rem);
  font-weight: 720;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.hero-intro {
  max-width: 600px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  line-height: 1.62;
}

.finder {
  max-width: 720px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
}

.finder-tabs {
  display: flex;
  gap: 4px;
  padding: 2px 2px 8px;
}

.finder-tabs button {
  border: 0;
  border-radius: var(--radius-small);
  padding: 9px 12px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 760;
}

.finder-tabs button[aria-selected="true"] {
  background: var(--blue-soft);
  color: var(--navy);
}

.finder-panel-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 8px;
}

.finder-panel[hidden] {
  display: none;
}

.dimension-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(86px, 1fr)) 86px;
  gap: 8px;
}

.field {
  display: grid;
  gap: 5px;
}

.field label {
  padding-left: 2px;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 730;
}

.field input,
.field select {
  width: 100%;
  min-height: 50px;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  padding: 0 13px;
  background: var(--surface);
  color: var(--ink);
  outline: 0;
}

.field input::placeholder {
  color: color-mix(in srgb, var(--ink-soft) 82%, transparent);
  opacity: 1;
}

.field input:focus,
.field select:focus {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 16%, transparent);
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  padding: 0 20px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.button-primary {
  background: var(--solid-blue);
  color: #f7f8ff;
}

.button-primary:hover {
  background: var(--solid-blue-hover);
}

.finder-message {
  min-height: 0;
  color: var(--success);
  font-size: 0.76rem;
  font-weight: 700;
}

.finder-message:not(:empty) {
  padding: 9px 4px 2px;
}

.finder-message.is-error {
  color: var(--danger);
}

.hero-media {
  min-width: 0;
  margin: 0;
}

.hero-image-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-large);
  background: var(--metal);
  box-shadow: 0 28px 70px rgba(28, 40, 75, 0.2);
}

.hero-image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: inherit;
  pointer-events: none;
}

.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-media:hover img {
  transform: scale(1.025);
}

.hero-media figcaption {
  margin-top: 13px;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.proof-bar {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface-raised);
}

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

.proof-grid > div {
  min-height: 94px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 28px;
  border-right: 1px solid var(--line);
}

.proof-grid > div:first-child {
  padding-left: 0;
}

.proof-grid > div:last-child {
  border-right: 0;
}

.proof-grid strong {
  font-size: 0.9rem;
}

.proof-grid span {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.section {
  padding-block: clamp(76px, 9vw, 132px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-heading h2,
.measure-copy h2,
.engineering-copy h2,
.support-heading h2,
.quote-inner h2 {
  margin-bottom: 15px;
  font-size: clamp(2.1rem, 3.5vw, 3.65rem);
  letter-spacing: -0.045em;
  line-height: 1.03;
}

.section-heading p,
.measure-copy > p,
.engineering-copy > p,
.support-section article p,
.quote-inner p {
  max-width: 610px;
  margin-bottom: 0;
  color: var(--ink-soft);
  line-height: 1.68;
}

.category-section {
  background: var(--surface);
}

.category-grid {
  display: grid;
  grid-template-columns: 1.24fr 0.76fr 0.86fr;
  grid-auto-rows: minmax(290px, auto);
  gap: 16px;
}

.category-card {
  min-height: 290px;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--surface-raised);
  transition:
    transform 240ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 240ms ease,
    box-shadow 240ms ease;
}

.category-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.category-card--wide {
  grid-column: span 2;
}

.category-card--blue {
  grid-template-columns: 1fr;
  background: var(--blue-soft);
}

.category-card--blue .category-image {
  min-height: 154px;
}

.category-card--blue .category-content {
  align-self: end;
}

.category-card--dark {
  grid-template-columns: 1fr;
  background: var(--surface-muted);
  color: var(--ink);
}

.category-card--dark .category-content p {
  color: var(--ink-soft);
}

.category-card--dark .category-content span {
  color: var(--navy);
}

.category-card--linear {
  background: var(--surface-muted);
}

.category-card--quiet {
  grid-template-columns: 0.8fr 1.2fr;
  background: var(--blue-wash);
}

.category-image {
  min-width: 0;
  height: 100%;
  display: grid;
  place-items: center;
  padding: 20px;
}

.category-image img {
  width: 100%;
  height: 100%;
  max-height: 240px;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="dark"] .category-image img,
:root[data-theme="dark"] .product-image img {
  mix-blend-mode: normal;
}

.category-card:hover .category-image img {
  transform: scale(1.045);
}

.category-content {
  padding: 28px;
}

.category-content h3 {
  margin-bottom: 9px;
  font-size: clamp(1.15rem, 1.5vw, 1.55rem);
  letter-spacing: -0.025em;
}

.category-content p {
  margin-bottom: 24px;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.category-content span {
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
}

.category-content span::after,
.text-link::after,
.support-section article a::after {
  content: "→";
  margin-left: 8px;
  transition: transform 180ms ease;
}

.category-card:hover .category-content span::after,
.text-link:hover::after,
.support-section article a:hover::after {
  display: inline-block;
  transform: translateX(4px);
}

.measure-section {
  overflow: hidden;
  background: var(--blue-wash);
  color: var(--ink);
}

.measure-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  align-items: start;
  gap: clamp(64px, 10vw, 160px);
}

.measure-copy {
  position: sticky;
  top: 40px;
}

.measure-copy > p {
  margin-bottom: 28px;
  color: var(--ink-soft);
}

.measure-copy .button-primary {
  background: var(--solid-blue);
  color: #f7f8ff;
}

.measure-copy .button-primary:hover {
  background: var(--solid-blue-hover);
}

.measure-steps {
  display: grid;
  gap: 8px;
}

.measure-item {
  min-height: 134px;
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.measure-item:last-child {
  border-bottom: 0;
}

.measure-key {
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--navy);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 1.1rem;
  font-weight: 800;
}

.measure-item h3 {
  margin-bottom: 6px;
  font-size: 1.2rem;
}

.measure-item p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.product-section {
  background: var(--surface-raised);
}

.section-heading--product {
  max-width: none;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.text-link {
  flex: none;
  padding-bottom: 4px;
  color: var(--navy);
  font-size: 0.82rem;
  font-weight: 800;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--surface);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    border-color 220ms ease;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.product-image {
  overflow: hidden;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: var(--radius-small);
  background: #ffffff;
}

.product-image img {
  width: 88%;
  height: 88%;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover .product-image img {
  transform: scale(1.04);
}

.product-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.67rem;
}

.product-card h3 {
  min-height: 50px;
  margin: 10px 0 20px;
  font-size: 1rem;
  letter-spacing: -0.015em;
}

.product-card h3 a:hover {
  color: var(--navy);
}

.product-buy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.product-buy strong {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 1.04rem;
}

.product-buy button {
  min-height: 38px;
  border: 1px solid var(--solid-blue);
  border-radius: var(--radius-small);
  padding: 0 13px;
  background: var(--solid-blue);
  color: #f7f8ff;
  font-size: 0.75rem;
  font-weight: 800;
  transition:
    transform 170ms ease,
    background-color 170ms ease;
}

.product-buy button:hover {
  background: var(--solid-blue-hover);
  transform: translateY(-1px);
}

.product-buy button:active {
  transform: scale(0.98);
}

.product-buy button.is-added {
  border-color: var(--success);
  background: var(--success);
}

.engineering-section {
  background: var(--surface);
}

.engineering-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: clamp(54px, 8vw, 124px);
}

.engineering-media {
  overflow: hidden;
  min-height: 560px;
  border-radius: var(--radius-large);
  background: var(--metal);
}

.engineering-media img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.engineering-copy > p {
  margin-bottom: 32px;
}

.engineering-links {
  display: grid;
  border-top: 1px solid var(--line);
}

.engineering-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  font-weight: 730;
}

.engineering-links a:hover {
  color: var(--navy);
}

.engineering-links span {
  flex: none;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 650;
}

.support-section {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.support-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
  gap: 0;
}

.support-heading {
  padding-right: clamp(32px, 6vw, 90px);
}

.support-section article {
  padding: 8px 38px 8px;
  border-left: 1px solid var(--line);
}

.support-section article h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.support-section article p {
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.support-section article a {
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 800;
}

.quote-section {
  padding-block: 64px;
  border-top: 1px solid var(--line);
  background: var(--blue-soft);
  color: var(--ink);
}

.quote-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.quote-inner h2 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 3vw, 3.15rem);
}

.quote-inner p {
  color: var(--ink-soft);
}

.quote-actions {
  display: flex;
  gap: 10px;
}

.button-light {
  background: var(--solid-blue);
  color: #f7f8ff;
}

.button-light:hover {
  background: var(--solid-blue-hover);
}

.button-ghost-light {
  border-color: var(--line-strong);
  color: var(--ink);
}

.button-ghost-light:hover {
  border-color: var(--navy);
  background: color-mix(in srgb, var(--navy) 8%, transparent);
}

.site-footer {
  padding: 72px 0 28px;
  border-top: 1px solid var(--line);
  background: var(--surface-raised);
  color: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 0.75fr);
  gap: clamp(42px, 7vw, 100px);
}

.footer-brand img {
  width: 178px;
  height: auto;
}

.footer-brand p {
  max-width: 340px;
  margin-top: 22px;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.site-footer h2 {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.site-footer a {
  display: block;
  margin-bottom: 11px;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.site-footer a:hover {
  color: var(--navy);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  margin-top: 58px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.7rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ink: #f1f3f8;
    --ink-soft: #aeb8ca;
    --navy: #7f96ff;
    --navy-deep: #9cacff;
    --solid-blue: #3f55b2;
    --solid-blue-hover: #5166c7;
    --blue-soft: #25315e;
    --blue-wash: #171e38;
    --surface: #0f1420;
    --surface-raised: #171e2b;
    --surface-muted: #202838;
    --line: #343f52;
    --line-strong: #4f5b70;
    --success: #75c9a8;
    --danger: #ff9898;
    --metal: #2b3442;
    --focus: #9cacff;
    --shadow: 0 18px 46px rgba(0, 0, 0, 0.24);
  }
}

@media (max-width: 1180px) {
  .header-main {
    grid-template-columns: 180px minmax(280px, 1fr);
  }

  .header-tools {
    grid-column: 1 / -1;
    justify-content: flex-end;
    min-height: 34px;
    margin-top: -20px;
  }

  .nav-row {
    gap: 18px;
  }

  .primary-nav {
    gap: 18px;
    font-size: 0.82rem;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.92fr);
    gap: 42px;
  }

  .category-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .category-card--wide {
    grid-column: span 1;
  }

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

@media (max-width: 900px) {
  :root {
    --shell: min(100% - 32px, 760px);
  }

  .service-strip__inner {
    justify-content: flex-start;
    overflow-x: auto;
    gap: 26px;
    white-space: nowrap;
  }

  .header-main {
    min-height: 72px;
    grid-template-columns: 156px auto;
    gap: 18px;
  }

  .header-search {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-bottom: 14px;
  }

  .header-tools {
    grid-column: 2;
    grid-row: 1;
    margin: 0;
  }

  .header-tools > a:first-child,
  .header-tools > a:nth-last-child(2) {
    display: none;
  }

  .nav-row {
    min-height: 50px;
    justify-content: space-between;
  }

  .menu-toggle {
    display: block;
  }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    display: none;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-medium);
    background: var(--surface-raised);
    box-shadow: var(--shadow);
  }

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

  .primary-nav a {
    padding: 13px 12px;
    border-bottom: 1px solid var(--line);
  }

  .primary-nav a:last-child {
    border-bottom: 0;
  }

  .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 42px;
    padding-block: 54px 66px;
  }

  h1 {
    max-width: 680px;
    font-size: clamp(3rem, 9vw, 5rem);
  }

  .hero-media {
    max-width: 720px;
  }

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

  .proof-grid > div {
    border-bottom: 1px solid var(--line);
  }

  .proof-grid > div:nth-child(2) {
    border-right: 0;
  }

  .proof-grid > div:nth-child(3),
  .proof-grid > div:nth-child(4) {
    border-bottom: 0;
  }

  .proof-grid > div:first-child,
  .proof-grid > div:nth-child(3) {
    padding-left: 0;
  }

  .category-grid,
  .measure-grid,
  .engineering-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-auto-rows: auto;
  }

  .category-card,
  .category-card--blue,
  .category-card--dark,
  .category-card--quiet {
    min-height: 280px;
    grid-template-columns: minmax(160px, 0.8fr) minmax(0, 1.2fr);
  }

  .measure-copy {
    position: static;
  }

  .measure-grid {
    gap: 48px;
  }

  .engineering-media,
  .engineering-media img {
    min-height: 430px;
  }

  .support-grid {
    gap: 36px;
  }

  .support-heading {
    padding-right: 0;
  }

  .support-section article {
    padding: 0 0 32px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .quote-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 32px;
  }
}

@media (max-width: 680px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .service-strip__inner {
    min-height: 32px;
    font-size: 0.68rem;
  }

  .header-tools {
    gap: 12px;
    font-size: 0.74rem;
  }

  .theme-toggle {
    display: none;
  }

  .brand {
    width: 150px;
  }

  .quote-link {
    font-size: 0.78rem;
  }

  .hero-grid {
    gap: 34px;
    padding-block: 44px 52px;
  }

  .eyebrow {
    margin-bottom: 12px;
    font-size: 0.66rem;
  }

  h1 {
    font-size: clamp(2.5rem, 12vw, 4rem);
    letter-spacing: -0.05em;
  }

  .hero-intro {
    font-size: 0.96rem;
  }

  .finder-tabs {
    overflow-x: auto;
  }

  .finder-tabs button {
    flex: none;
  }

  .finder-panel-form {
    grid-template-columns: 1fr;
  }

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

  .finder-panel .button {
    width: 100%;
  }

  .hero-image-frame {
    aspect-ratio: 5 / 4;
  }

  .proof-grid {
    grid-template-columns: 1fr;
  }

  .proof-grid > div,
  .proof-grid > div:nth-child(3) {
    min-height: 80px;
    padding-left: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-grid > div:last-child {
    border-bottom: 0;
  }

  .section {
    padding-block: 72px;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .category-card,
  .category-card--blue,
  .category-card--dark,
  .category-card--quiet {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .category-image {
    min-height: 200px;
    max-height: 240px;
  }

  .category-content {
    padding: 4px 22px 24px;
  }

  .measure-item {
    grid-template-columns: 66px 1fr;
    gap: 18px;
  }

  .measure-key {
    width: 60px;
    height: 60px;
  }

  .section-heading--product {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    display: grid;
    grid-template-columns: 124px 1fr;
    column-gap: 16px;
  }

  .product-image {
    grid-row: 1 / span 3;
  }

  .product-meta {
    margin-top: 4px;
  }

  .product-card h3 {
    min-height: auto;
    margin-bottom: 10px;
  }

  .engineering-media,
  .engineering-media img {
    min-height: 320px;
  }

  .quote-actions {
    width: 100%;
    flex-direction: column;
  }

  .quote-actions .button {
    width: 100%;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: no-preference) and (min-width: 901px) {
  .reveal {
    animation: reveal-up 700ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .reveal-delay {
    animation-delay: 120ms;
  }

  @keyframes reveal-up {
    from {
      opacity: 0;
      transform: translateY(22px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}