@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url("/assets/fonts/source-sans3-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url("/assets/fonts/source-sans3-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
  --navy-950: #071232;
  --navy-900: #0b1742;
  --navy-800: #14235a;
  --navy-700: #1c3277;
  --yellow: #ffc400;
  --yellow-deep: #eab400;
  --ink: #10131b;
  --muted: #5b6372;
  --line: #dfe2e8;
  --paper: #f6f6f3;
  --white: #ffffff;
  --shadow: 0 18px 46px rgba(7, 18, 50, 0.13);
  --container: 1320px;
  --header-height: 88px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Sans 3", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

img {
  height: auto;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

button,
input,
textarea,
select {
  font: inherit;
}

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

:focus-visible {
  outline: 3px solid #78a7ff;
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--navy-950);
  background: var(--yellow);
  font-weight: 800;
  transform: translateY(-160%);
}

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

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--navy-700);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  line-height: 1.25;
  text-transform: uppercase;
}

.eyebrow--yellow {
  color: var(--yellow);
}

.section-title {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 820;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.section-copy {
  max-width: 690px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--navy-700);
  font-weight: 800;
  text-decoration: none;
}

.text-link svg {
  width: 17px;
  height: 17px;
  transition: transform 180ms ease;
}

.text-link:hover svg {
  transform: translateX(4px);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button svg {
  width: 18px;
  height: 18px;
  transition: transform 180ms ease;
}

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

.button:hover svg {
  transform: translateX(3px);
}

.button--primary {
  color: var(--navy-950);
  background: var(--yellow);
  box-shadow: 0 8px 22px rgba(255, 196, 0, 0.22);
}

.button--primary:hover {
  background: #ffd12f;
}

.button--outline {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.76);
  background: rgba(255, 255, 255, 0.03);
}

.button--outline:hover {
  color: var(--navy-950);
  background: var(--white);
}

.button--navy {
  color: var(--white);
  background: var(--navy-800);
}

.button--navy:hover {
  background: var(--navy-700);
}

/* Header */
.site-header {
  position: relative;
  z-index: 50;
  min-height: var(--header-height);
  color: var(--white);
  background:
    radial-gradient(circle at 20% -80%, rgba(93, 121, 208, 0.26), transparent 54%),
    linear-gradient(110deg, #182758, #0b1742);
}

.header-inner {
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto minmax(410px, 1fr) auto;
  align-items: center;
  gap: clamp(24px, 3vw, 56px);
}

.brand {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  min-width: 144px;
  padding-block: 12px;
  color: var(--white);
  text-decoration: none;
}

.brand::before,
.brand::after {
  content: "";
  position: absolute;
  right: 19px;
  width: 74px;
  height: 1px;
  background: rgba(255, 255, 255, 0.45);
}

.brand::before {
  top: 3px;
}

.brand::after {
  right: 37px;
  bottom: 3px;
  width: 55px;
}

.brand-name {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1;
}

.brand-chevron {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
}

.primary-nav {
  justify-self: start;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(22px, 2.4vw, 44px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a,
.nav-products summary {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: rgba(255, 255, 255, 0.94);
  font-size: 0.93rem;
  font-weight: 760;
  text-decoration: none;
  cursor: pointer;
}

.primary-nav a::after,
.nav-products > summary::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after,
.nav-products[open] > summary::after {
  transform: scaleX(1);
}

.primary-nav a[aria-current="page"] {
  color: var(--yellow);
}

.nav-products summary[aria-current="page"] {
  color: var(--yellow);
}

.nav-products summary[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-products {
  position: relative;
}

.nav-products summary {
  gap: 8px;
  list-style: none;
}

.nav-products summary::-webkit-details-marker {
  display: none;
}

.nav-products summary svg {
  width: 14px;
  height: 14px;
  transition: transform 180ms ease;
}

.nav-products[open] summary svg {
  transform: rotate(180deg);
}

.nav-products__menu {
  position: absolute;
  top: calc(100% + 7px);
  left: -20px;
  width: 260px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 6px;
  background: var(--navy-950);
  box-shadow: var(--shadow);
}

.nav-products__menu a {
  min-height: 38px;
  display: flex;
  padding: 7px 10px;
  border-radius: 3px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.87rem;
}

.nav-products__menu a::after {
  display: none;
}

.nav-products__menu a:hover {
  color: var(--navy-950);
  background: var(--yellow);
}

.header-contacts {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(20px, 2vw, 34px);
}

.header-contact {
  display: grid;
  grid-template-columns: 25px auto;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-size: 0.88rem;
  line-height: 1.25;
  text-decoration: none;
  white-space: nowrap;
}

.header-contact svg {
  width: 23px;
  height: 23px;
  color: rgba(255, 255, 255, 0.82);
}

.header-contact small {
  display: block;
  margin-bottom: 2px;
  color: rgba(255, 255, 255, 0.63);
  font-size: 0.7rem;
  font-weight: 500;
}

.menu-toggle,
.mobile-contact-list {
  display: none;
}

/* Material, type and spacing remain consistent with the supplied WALEX design. */
body { font-size: 16px; line-height: 1.65; }
h1, h2, h3 { text-wrap: balance; }
h1 { margin: 0; font-size: clamp(2.75rem, 4.4vw, 4.2rem); line-height: 1.06; letter-spacing: -0.04em; }
figure { margin: 0; }
p { text-wrap: pretty; }
.eyebrow { font-weight: 750; font-size: 0.79rem; letter-spacing: 0.1em; }
.section-title { font-weight: 750; font-size: clamp(2rem, 2.8vw, 2.7rem); line-height: 1.13; letter-spacing: -0.025em; }
.lead { font-size: 1.12rem; line-height: 1.65; }
.button { font-weight: 700; border-radius: 3px; }
.button--primary { box-shadow: none; }
.button:active, .small-button:active { transform: translateY(1px); }
.primary-nav a, .nav-products summary { font-weight: 650; }
.header-contact { font-size: 0.9rem; }
.brand { min-width: 154px; }
.brand-name { font-size: 2.1rem; letter-spacing: -0.035em; }

/* Homepage — continuous gravel backdrop, as in the supplied reference. */
.hero-home {
  position: relative;
  isolation: isolate;
  color: var(--white);
  background: url("/assets/images/hero-gravel.webp") center / cover;
}
.hero-home::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(7,20,60,.96), rgba(8,24,69,.82) 30%, rgba(7,20,60,.34) 58%, transparent 82%);
}
.hero-home > .container {
  display: flex;
  align-items: center;
  min-height: clamp(500px, 38.42vw, 590px);
  padding-block: 64px;
}
.hero-home__content { width: min(700px, 100%); }
.hero-home h1 { font-size: clamp(3.3rem, 4.7vw, 4.5rem); font-weight: 800; line-height: .98; letter-spacing: -.035em; text-transform: uppercase; text-wrap: initial; }
.hero-home h1 small { display: block; margin-bottom: 18px; color: var(--yellow); font-size: 1.1rem; font-weight: 750; letter-spacing: .08em; line-height: 1.3; }
.hero-home h1 > span { display: block; margin-top: 5px; color: var(--yellow); }
.hero-home__lead { max-width: 505px; margin: 24px 0 0; font-size: 1.06rem; line-height: 1.65; }
.hero-facts { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin-top: 32px; }
.hero-fact { display: grid; grid-template-columns: 54px 1fr; align-items: center; gap: 12px; min-width: 0; }
.hero-fact__icon { width: 54px; height: 54px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.08); border-radius: 7px; background: rgba(5,17,61,.72); }
.hero-fact__icon svg { width: 29px; height: 29px; }
.hero-fact strong { display: block; font-size: .87rem; line-height: 1.3; }
.hero-fact > span > span { display: block; margin-top: 5px; color: #d9deed; font-size: .88rem; line-height: 1.4; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 34px; }
.hero-actions .button { min-width: 188px; }
.home-intro { padding: 50px 0 44px; background: var(--paper); }
.home-intro__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: start; }
.home-intro__about h2 { margin: 0; font-size: clamp(1.6rem,2vw,1.95rem); line-height: 1.2; letter-spacing: -.025em; font-weight: 750; }
.home-intro__about > p:not(.eyebrow) { max-width: 550px; margin: 0; font-size: .97rem; line-height: 1.6; }
.yellow-rule { width: 64px; height: 3px; margin: 14px 0 18px; background: var(--yellow); }
.small-button { display: inline-flex; align-items: center; gap: 18px; min-height: 44px; margin-top: 19px; padding: 10px 21px; border: 1px solid var(--navy-700); border-radius: 3px; color: var(--navy-700); font-size: .85rem; font-weight: 650; text-decoration: none; transition: background .18s, color .18s; }
.small-button svg { width: 16px; height: 16px; }
.small-button:hover { color: white; background: var(--navy-800); }
.home-intro__products > .eyebrow { margin: 0 0 16px; font-size: 1.02rem; letter-spacing: 0; line-height: 1.3; }
.product-teasers { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; }
.product-teaser { position: relative; min-width: 0; height: 194px; overflow: hidden; border-radius: 3px; background: #e3e1d9; text-decoration: none; }
.product-teaser img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.product-teaser[data-crop-intent="full-subject"] img { object-fit: contain; padding-bottom: 20px; }
.product-teaser::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, rgba(10,12,16,.91)); }
.product-teaser > span { position: absolute; z-index: 1; left: 10px; right: 10px; bottom: 16px; color: white; font-size: .86rem; font-weight: 700; line-height: 1.3; text-align: center; }
.product-teaser:hover img { transform: scale(1.035); }
.home-intro__products .text-link { margin-top: 15px; font-size: .87rem; }
.applications { padding: 84px 0; background: var(--navy-900); color: white; }
.applications__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.applications__visual { position: relative; }
.applications__visual::after { content: ""; position: absolute; left: 0; bottom: -5px; width: 88px; height: 5px; background: var(--yellow); }
.applications__visual img { width: 100%; aspect-ratio: 1.2; object-fit: cover; object-position: 55% center; }
.applications__list { margin: 28px 0 0; padding: 0; list-style: none; }
.applications__list li { padding: 19px 0; border-top: 1px solid rgba(255,255,255,.18); }
.applications__list li:last-child { padding-bottom: 0; }
.applications__list strong { font-size: 1.12rem; font-weight: 650; }
.applications__list .list-description { display: block; margin: 6px 0 0; color: #cbd2e2; font-size: .96rem; }
.local-sites { padding: 68px 0 76px; background: var(--white); }
.local-sites__head { display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 80px; margin-bottom: 35px; }
.local-sites__head > p { max-width: 500px; margin: 0; color: var(--muted); }
.site-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.site-card { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding-top: 27px; border-top: 1px solid var(--line); }
.site-card .eyebrow { font-size: .7rem; }
.site-card h3 { margin: 0; font-size: 1.5rem; line-height: 1.25; letter-spacing: -.02em; }
.site-card address { color: var(--muted); font-style: normal; font-size: .95rem; margin-top: 6px; }
.site-card > a { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; color: var(--navy-700); font-size: 1.05rem; font-weight: 650; text-decoration: none; white-space: nowrap; }
.site-card > a svg { width: 17px; height: 17px; }
.site-card > a:hover { text-decoration: underline; }

/* About — production explanation, a real chronology, then the Barcin story. */
.about-opening { padding: 76px 0; color: white; background: var(--navy-900); }
.about-opening__grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; }
.about-opening h1 { font-size: clamp(2.65rem,4vw,3.8rem); }
.about-opening .lead { margin: 25px 0 20px; color: #f2f4fa; font-size: 1.1rem; }
.about-opening__copy > p:last-child { margin: 0; color: #cbd2e2; font-size: 1rem; }
.about-opening__visual { position: relative; }
.about-opening__visual img { width: 100%; height: auto; }
.about-opening__visual::before { content: ""; position: absolute; top: -14px; right: -14px; width: 76px; height: 76px; border-top: 3px solid var(--yellow); border-right: 3px solid var(--yellow); }
.history { padding: 80px 0; background: white; }
.history__layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.history-line { list-style: none; padding: 0; margin: 0; }
.history-item { display: grid; grid-template-columns: 90px 1fr; gap: 32px; padding: 22px 0; border-top: 1px solid var(--line); }
.history-item:last-child { padding-bottom: 0; }
.history-item strong { color: var(--navy-700); font-size: 1.75rem; line-height: 1.4; font-weight: 650; font-variant-numeric: tabular-nums; }
.history-item h3 { margin: 0 0 7px; font-size: 1.12rem; }
.history-item .list-description { display: block; margin: 0; color: var(--muted); }
.barcin-story { padding: 78px 0 86px; background: var(--paper); }
.barcin-story__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.barcin-story figure { padding: 32px; border: 1px solid var(--line); background: white; }
.barcin-story figure img { width: 100%; }
.barcin-story__grid > div > p:not(.eyebrow) { color: var(--muted); margin: 20px 0 0; }
.barcin-story .text-link { margin-top: 24px; }

/* Catalogue — complete, comparable products with compact real photography. */
.catalog-opening { padding: 64px 0 0; color: white; background: var(--navy-900); }
.catalog-opening__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.catalog-opening .lead { margin: 0; max-width: 565px; color: #d2d9e9; }
.catalog-index { display: flex; flex-wrap: wrap; gap: 12px 34px; margin-top: 42px; border-top: 1px solid rgba(255,255,255,.2); }
.catalog-index a { display: inline-flex; align-items: center; min-height: 64px; padding: 14px 0; color: #f3f4f9; border-bottom: 3px solid transparent; font-size: .97rem; text-decoration: none; transition: color .18s, border-color .18s; }
.catalog-index a:hover { color: var(--yellow); border-bottom-color: var(--yellow); }
.catalog-section { padding: 66px 0; background: white; }
.catalog-section + .catalog-section { border-top: 1px solid var(--line); }
.catalog-section__layout { display: grid; grid-template-columns: 275px minmax(0,1fr); gap: 70px; align-items: start; }
.catalog-section__heading { position: sticky; top: 30px; }
.catalog-section__heading h2 { margin: 0; font-size: clamp(2rem,3vw,2.8rem); line-height: 1.13; letter-spacing: -.03em; font-weight: 750; }
.catalog-section__heading .eyebrow { font-size: .73rem; }
.product-rows { display: grid; }
.product-row { display: grid; grid-template-columns: 205px minmax(0,1fr); gap: 32px; padding: 28px 0; border-top: 1px solid var(--line); scroll-margin-top: 28px; }
.product-row:first-child { padding-top: 0; border-top: 0; }
.product-row:last-child { padding-bottom: 0; }
.product-row figure img { width: 100%; height: auto; aspect-ratio: 3/2; object-fit: cover; border-radius: 2px; }
.product-row h3 { margin: 0; font-size: 1.38rem; line-height: 1.3; color: var(--navy-800); font-weight: 700; letter-spacing: -.015em; text-wrap: initial; }
.product-row__copy > p { margin: 11px 0 0; font-size: 1rem; color: var(--muted); }
.product-row .product-fractions { display: flex; flex-wrap: wrap; gap: 9px; align-items: baseline; margin-top: 15px; color: var(--navy-700); font-size: .88rem; font-weight: 650; }
.product-fractions > span:first-child { padding-right: 8px; color: var(--muted); font-weight: 400; }
.product-fractions > span[aria-hidden] { color: #abb2c2; font-weight: 400; }
.aac-section { padding: 78px 0; background: var(--navy-900); color: white; }
.aac-section__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.aac-section__visual { padding: 28px; border: 1px solid rgba(255,255,255,.25); }
.aac-section__visual img { width: 100%; height: auto; }
.aac-section__copy > p:not(.eyebrow) { margin: 20px 0 0; color: #ccd4e6; }
.dimension-table { width: 100%; margin-top: 24px; border-collapse: collapse; font-size: .97rem; }
.dimension-table caption { margin-bottom: 12px; text-align: left; color: #fff; font-weight: 650; font-size: .86rem; }
.dimension-table th, .dimension-table td { padding: 13px 0; border-top: 1px solid rgba(255,255,255,.23); vertical-align: top; text-align: left; }
.dimension-table th { width: 125px; padding-right: 22px; color: #cbd2e2; font-weight: 400; }
.dimension-table td { color: white; }

/* Contact — direct details, with clear emphasis on the two telephones. */
.contact-page { padding: 70px 0 84px; background: var(--paper); }
.contact-page__intro { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-bottom: 52px; }
.contact-page h1 { color: var(--navy-900); }
.contact-page__intro > p { max-width: 510px; margin: 0; color: var(--muted); font-size: 1.1rem; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-card { position: relative; display: flex; flex-direction: column; align-items: flex-start; padding: 35px 0 0; border-top: 2px solid #cbd1de; }
.contact-card::before { content: ""; position: absolute; top: -3px; left: 0; width: 64px; height: 4px; background: var(--yellow); }
.contact-card > .eyebrow { margin-bottom: 8px; }
.contact-card h2 { margin: 0; color: var(--navy-900); font-size: 2rem; line-height: 1.2; letter-spacing: -.025em; text-wrap: initial; }
.contact-card__company { min-height: 52px; margin: 23px 0 15px; font-size: .98rem; line-height: 1.6; color: var(--muted); }
.contact-card address { font-size: 1rem; font-style: normal; color: var(--ink); }
.contact-phone { display: inline-flex; align-items: center; gap: 24px; margin-top: 25px; color: var(--navy-800); font-size: clamp(1.6rem,2.5vw,2.2rem); font-weight: 650; line-height: 1.4; letter-spacing: -.025em; text-decoration: none; }
.contact-phone svg { width: 22px; height: 22px; }
.contact-phone:hover { color: var(--navy-700); text-decoration: underline; }
.contact-email { margin-top: 8px; color: var(--navy-700); font-size: 1.05rem; }
.contact-map { margin-top: 28px; font-size: .91rem; }

/* Shared ending. */
.site-footer { color: #c7cede; background: var(--navy-950); }
.footer-main { display: grid; grid-template-columns: 1.2fr .7fr 1fr; gap: 70px; padding-block: 48px; }
.footer-brand .brand { margin-bottom: 17px; }
.footer-brand p { max-width: 400px; margin: 0; font-size: .91rem; }
.footer-title { margin: 0 0 15px; color: white; font-size: .76rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.footer-links, .footer-contact { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; font-size: .93rem; }
.footer-links a, .footer-contact a { color: #c7cede; text-decoration: none; }
.footer-links a:hover, .footer-contact a:hover { color: var(--yellow); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 18px; border-top: 1px solid rgba(255,255,255,.12); font-size: .76rem; }
.not-found { min-height: 70vh; display: grid; align-items: center; padding-block: 80px; color: white; background: var(--navy-900); }
.not-found__content { max-width: 720px; }
.not-found__code { color: var(--yellow); font-size: 6rem; font-weight: 700; line-height: 1; }
.not-found h1 { margin-top: 25px; }
.not-found p { margin: 20px 0 28px; }

/* Header changes at the same known navigation threshold. */
@media (max-width: 1220px) {
  .header-inner { grid-template-columns: auto 1fr auto; gap: 26px; }
  .primary-nav__list { gap: 24px; }
  .header-contact--email { display: none; }
  .home-intro__grid { gap: 40px; }
  .product-teasers { gap: 10px; }
  .applications__grid, .history__layout, .barcin-story__grid, .aac-section__grid { gap: 48px; }
  .catalog-section__layout { grid-template-columns: 230px minmax(0,1fr); gap: 42px; }
  .product-row { grid-template-columns: 170px minmax(0,1fr); gap: 26px; }
}
@media (max-width: 1020px) {
  :root { --header-height: 76px; }
  .container { width: min(calc(100% - 40px), var(--container)); }
  .header-inner { min-height: var(--header-height); grid-template-columns: auto auto; justify-content: space-between; }
  .menu-toggle { width: 46px; height: 46px; display: grid; place-items: center; padding: 0; border: 1px solid rgba(255,255,255,.4); border-radius: 3px; color: white; background: transparent; cursor: pointer; }
  .menu-toggle svg { width: 25px; height: 25px; }
  .menu-toggle .icon-close, .menu-toggle[aria-expanded="true"] .icon-menu { display: none; }
  .menu-toggle[aria-expanded="true"] .icon-close { display: block; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; max-height: calc(100dvh - var(--header-height)); overflow-y: auto; padding: 18px 20px 28px; background: var(--navy-950); box-shadow: var(--shadow); }
  .primary-nav[data-open="true"] { display: block; }
  .primary-nav__list { display: grid; gap: 2px; }
  .primary-nav a, .nav-products summary { width: 100%; min-height: 48px; justify-content: space-between; padding: 8px 2px; }
  .nav-products__menu { position: static; width: auto; margin: 4px 0 10px; padding: 4px 0 4px 16px; border: 0; border-left: 2px solid var(--yellow); box-shadow: none; }
  .nav-products__menu a { min-height: 42px; padding: 7px 12px; }
  .mobile-contact-list { display: grid; gap: 4px; margin-top: 20px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.16); }
  .mobile-contact-list a { justify-content: flex-start; gap: 12px; font-size: .9rem; }
  .mobile-contact-list svg { width: 20px; height: 20px; flex: 0 0 auto; }
  .mobile-contact-list a::after { display: none; }
  .header-contacts { display: none; }
  .hero-home { background-image: url("/assets/images/hero-gravel-tablet.webp"); }
  .hero-home > .container { min-height: 540px; padding-block: 62px; }
  .hero-home::before { background: linear-gradient(90deg,rgba(7,20,60,.96),rgba(8,24,69,.8) 60%,rgba(7,20,60,.16)); }
  .hero-home h1 { font-size: 4rem; }
  .home-intro { padding-block: 50px; }
  .home-intro__grid { grid-template-columns: 1fr; gap: 36px; }
  .home-intro__about { max-width: 650px; }
  .home-intro__about > p:not(.eyebrow) { max-width: none; }
  .product-teaser { height: 200px; }
  .applications__grid { grid-template-columns: .85fr 1.15fr; gap: 34px; }
  .applications__visual img { aspect-ratio: .65; }
  .applications, .history, .barcin-story, .aac-section { padding-block: 60px; }
  .local-sites__head { gap: 34px; }
  .site-card { flex-direction: column; align-items: flex-start; gap: 10px; }
  .about-opening { padding-block: 60px; }
  .about-opening__grid { gap: 40px; grid-template-columns: 1fr; }
  .about-opening__copy { max-width: 760px; }
  .about-opening__visual { width: min(760px,100%); }
  .history__layout { grid-template-columns: 1fr 1.35fr; gap: 34px; }
  .history-item { grid-template-columns: 70px 1fr; gap: 18px; }
  .barcin-story__grid, .aac-section__grid { grid-template-columns: .8fr 1.2fr; gap: 36px; }
  .barcin-story figure, .aac-section__visual { padding: 16px; }
  .catalog-opening { padding-top: 50px; }
  .catalog-opening__grid { gap: 36px; }
  .catalog-section__layout { grid-template-columns: 180px minmax(0,1fr); gap: 32px; }
  .product-row { grid-template-columns: 120px minmax(0,1fr); gap: 22px; }
  .product-row h3 { font-size: 1.26rem; }
  .contact-page__intro { gap: 40px; }
  .contact-grid { gap: 36px; }
  .contact-card h2 { font-size: 1.7rem; }
  .footer-main { gap: 35px; grid-template-columns: 1.05fr .55fr 1fr; }
}
@media (max-width: 720px) {
  :root { --header-height: 72px; }
  .container { width: calc(100% - 40px); }
  .brand { min-width: 140px; }
  .brand-name { font-size: 1.9rem; }
  .hero-home { background-image: url("/assets/images/hero-gravel-mobile.webp"); background-position: 60% center; }
  .hero-home::before { background: linear-gradient(90deg,rgba(7,20,60,.94),rgba(8,24,69,.76) 65%,rgba(7,20,60,.46)); }
  .hero-home > .container { min-height: 0; padding-block: 44px 48px; }
  .hero-home h1 { font-size: clamp(2rem,10.5vw,3.4rem); letter-spacing: -.025em; }
  .hero-home h1 small { font-size: .87rem; margin-bottom: 15px; }
  .hero-home__lead { margin-top: 21px; font-size: 1rem; line-height: 1.6; max-width: 500px; }
  .hero-facts { gap: 12px; margin-top: 26px; }
  .hero-fact { grid-template-columns: 1fr; gap: 9px; align-content: start; }
  .hero-fact__icon { width: 38px; height: 38px; border: 0; border-radius: 4px; }
  .hero-fact__icon svg { width: 24px; height: 24px; }
  .hero-fact strong { font-size: .79rem; line-height: 1.4; }
  .hero-fact > span > span { font-size: .71rem; line-height: 1.45; margin-top: 3px; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
  .hero-actions .button { min-width: 0; padding: 12px 9px; gap: 8px; font-size: .85rem; min-height: 52px; }
  .hero-actions .button svg { flex: 0 0 14px; width: 14px; height: 14px; }
  .home-intro { padding-block: 42px 46px; }
  .home-intro__grid { gap: 34px; }
  .home-intro__about h2 { font-size: 1.8rem; text-wrap: initial; }
  .home-intro__about > p:not(.eyebrow) { font-size: 1rem; }
  .product-teasers { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
  .product-teaser { height: auto; aspect-ratio: .95; }
  .product-teaser > span { font-size: .86rem; }
  .applications { padding-block: 46px 50px; }
  .applications__grid { grid-template-columns: 1fr; gap: 35px; }
  .applications__visual img { aspect-ratio: 3/2; }
  .applications__list { margin-top: 22px; }
  .applications__list .list-description { font-size: 1rem; }
  .section-title { font-size: 2rem; }
  .local-sites { padding-block: 48px 54px; }
  .local-sites__head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 26px; }
  .site-pair { grid-template-columns: 1fr; gap: 24px; }
  .site-card { flex-direction: row; align-items: center; gap: 18px; padding-top: 24px; }
  .site-card h3 { font-size: 1.23rem; }
  .site-card > a { font-size: .94rem; gap: 5px; }
  .site-card > a svg { width: 14px; height: 14px; }
  .site-card address { font-size: .86rem; }
  .about-opening { padding-block: 30px 46px; }
  .about-opening__grid { gap: 35px; }
  .about-opening__visual { order: -1; }
  .about-opening__visual::before { width: 56px; height: 56px; top: -8px; right: -8px; }
  .about-opening h1 { font-size: clamp(2.3rem,10vw,3rem); }
  .about-opening .lead { font-size: 1.06rem; margin-top: 20px; }
  .history { padding-block: 47px; }
  .history__layout { grid-template-columns: 1fr; gap: 30px; }
  .history-item { gap: 20px; grid-template-columns: 67px 1fr; padding-block: 22px; }
  .history-item strong { font-size: 1.45rem; }
  .history-item h3 { font-size: 1.05rem; }
  .history-item .list-description { font-size: .96rem; }
  .barcin-story, .aac-section { padding-block: 46px; }
  .barcin-story__grid, .aac-section__grid { grid-template-columns: 1fr; gap: 32px; }
  .barcin-story figure, .aac-section__visual { padding: 18px; }
  .barcin-story__grid > div > p:not(.eyebrow) { margin-top: 18px; }
  .catalog-opening { padding-top: 42px; }
  .catalog-opening__grid { grid-template-columns: 1fr; gap: 24px; }
  .catalog-opening h1 { font-size: 2.7rem; }
  .catalog-opening .lead { font-size: 1rem; line-height: 1.65; }
  .catalog-index { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; margin-top: 30px; padding-block: 11px; }
  .catalog-index a { min-height: 44px; padding-block: 8px; font-size: .88rem; line-height: 1.4; }
  .catalog-section { padding-block: 40px; }
  .catalog-section__layout { grid-template-columns: 1fr; gap: 28px; }
  .catalog-section__heading { position: static; }
  .catalog-section__heading h2 { font-size: 2rem; }
  .catalog-section__heading h2 br { display: none; }
  .product-row { grid-template-columns: 98px minmax(0,1fr); gap: 16px 19px; padding-block: 25px; }
  .product-row__copy { display: contents; }
  .product-row h3 { grid-column: 2; align-self: center; font-size: 1.3rem; }
  .product-row__copy > p { grid-column: 1/-1; font-size: 1rem; margin-top: 0; line-height: 1.6; }
  .product-row .product-fractions { font-size: .9rem; gap: 7px; margin-top: 0; }
  .product-fractions > span:first-child { padding-right: 8px; }
  .dimension-table { font-size: .94rem; }
  .dimension-table th { width: 105px; padding-right: 20px; }
  .contact-page { padding-block: 44px 55px; }
  .contact-page__intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 35px; }
  .contact-page h1 { font-size: clamp(2.25rem,10vw,3.1rem); }
  .contact-page__intro > p { font-size: 1rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 42px; }
  .contact-card { padding-top: 28px; }
  .contact-card h2 { font-size: 1.8rem; }
  .contact-card__company { min-height: 0; margin-block: 18px 15px; }
  .contact-phone { font-size: 1.9rem; gap: 20px; margin-top: 20px; }
  .contact-map { margin-top: 22px; }
  .footer-main { grid-template-columns: .55fr 1fr; gap: 32px 24px; padding-block: 38px; }
  .footer-brand { grid-column: 1/-1; }
  .footer-brand p { max-width: 450px; }
  .footer-links, .footer-contact { font-size: .88rem; }
  .footer-bottom { flex-wrap: wrap; gap: 4px; font-size: .7rem; }
  .not-found { min-height: 75vh; padding-block: 60px; }
}
@media (max-width: 360px) {
  .container { width: calc(100% - 32px); }
  .hero-fact strong { font-size: .73rem; }
  .hero-fact > span > span { font-size: .69rem; }
  .site-card { flex-direction: column; align-items: flex-start; gap: 7px; }
  .product-row { grid-template-columns: 78px minmax(0,1fr); gap: 16px; }
  .contact-phone { font-size: 1.7rem; gap: 15px; }
  .footer-main { gap: 28px 18px; grid-template-columns: .5fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}