:root {
  --navy: #09284a;
  --navy-2: #123a66;
  --teal: #00a7a5;
  --teal-dark: #087f86;
  --red: #c83e3a;
  --ink: #152231;
  --muted: #637083;
  --line: #dce5ee;
  --soft: #f3f7fa;
  --white: #ffffff;
  --shadow: 0 14px 34px rgba(9, 40, 74, 0.11);
  --shadow-strong: 0 24px 58px rgba(9, 40, 74, 0.18);
  --radius: 8px;
  --container: 1140px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 22px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

img {
  display: block;
}

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

button {
  font: inherit;
}

h1,
h2,
h3,
p,
li,
a {
  overflow-wrap: break-word;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 82px 0;
}

.section--soft {
  background: var(--soft);
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--teal-dark);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-heading h2,
.two-column h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.18;
}

.section-heading p:last-child {
  margin: 12px 0 0;
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(220, 229, 238, 0.92);
  backdrop-filter: blur(12px);
}

.navbar {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand,
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  color: var(--navy);
}

.brand__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand__name {
  font-size: 1.05rem;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 10px;
  border-radius: var(--radius);
  color: #24364a;
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--navy);
  background: #e8f7f8;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
}

.hero {
  min-height: 650px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(7, 31, 57, 0.94) 0%, rgba(8, 44, 78, 0.84) 48%, rgba(7, 31, 57, 0.38) 100%),
    url("img/generated/stock-steel-construction.png") center / cover no-repeat;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: 48px;
  align-items: center;
}

.hero__content,
.hero-card,
.two-column > *,
.cta-strip__inner > *,
.contact-grid > * {
  min-width: 0;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--white);
  font-size: clamp(2rem, 4.8vw, 4rem);
  line-height: 1.08;
}

.hero__text {
  max-width: 660px;
  margin: 20px 0 0;
  color: #dce9f3;
  font-size: 1.06rem;
}

.hero .section-kicker,
.cta-strip .section-kicker {
  color: #77f0ee;
}

.hero__actions,
.cta-strip__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 900;
  text-align: center;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  filter: brightness(1.04);
  transform: translateY(-2px);
}

.btn--primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  box-shadow: 0 14px 32px rgba(0, 167, 165, 0.25);
}

.btn--secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.34);
}

.hero-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(14px);
}

.hero-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.highlight-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 22px;
  color: #eef9fb;
  list-style: none;
}

.highlight-list li {
  position: relative;
  padding-left: 24px;
  font-weight: 800;
}

.highlight-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(0, 167, 165, 0.2);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 44px;
  align-items: start;
}

.content-box {
  color: var(--muted);
  font-size: 1rem;
}

.content-box p:first-child {
  margin-top: 0;
}

.product-grid,
.gallery-grid,
.color-grid,
.contact-grid {
  display: grid;
  gap: 20px;
}

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

.product-card,
.contact-card,
.color-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.product-card {
  min-height: 225px;
  padding: 24px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.product-card:hover {
  border-color: rgba(0, 167, 165, 0.5);
  box-shadow: var(--shadow-strong);
  transform: translateY(-5px);
}

.product-card__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  color: var(--white);
  background: var(--navy);
  font-weight: 900;
}

.product-card h3,
.contact-card h3 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 1.05rem;
  line-height: 1.3;
}

.product-card p,
.contact-card p {
  margin: 0;
  color: var(--muted);
}

.gallery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gallery-item {
  position: relative;
  min-height: 260px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--soft);
  box-shadow: var(--shadow);
}

.gallery-item--wide {
  grid-column: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 40, 74, 0.05), rgba(9, 40, 74, 0.86));
}

.gallery-item figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 18px;
  color: var(--white);
  font-weight: 900;
}

.gallery-item:hover img {
  filter: saturate(1.08) contrast(1.05);
  transform: scale(1.05);
}

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

.color-card {
  margin: 0;
  overflow: hidden;
}

.color-card img {
  width: 100%;
  aspect-ratio: 1 / 1.08;
  object-fit: cover;
  background: #eef3f7;
}

.color-card figcaption {
  padding: 14px 16px;
  color: var(--navy);
  font-weight: 900;
}

.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 8px 22px rgba(9, 40, 74, 0.06);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 20px;
  border: 0;
  color: var(--navy);
  background: transparent;
  font-weight: 900;
  text-align: left;
  cursor: pointer;
}

.faq-question span {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--teal-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.faq-answer p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--muted);
}

.faq-item.active .faq-answer {
  max-height: 220px;
}

.faq-item.active .faq-question span {
  background: var(--navy);
}

.cta-strip {
  padding: 68px 0;
  background:
    linear-gradient(135deg, rgba(9, 40, 74, 0.96), rgba(18, 58, 102, 0.94)),
    url("img/generated/stock-showroom-materials.png") center / cover no-repeat;
}

.cta-strip__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
}

.cta-strip h2 {
  max-width: 760px;
  margin: 0;
  color: var(--white);
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.18;
}

.cta-strip p:last-child {
  max-width: 660px;
  margin: 12px 0 0;
  color: #dce9f3;
}

.cta-strip__actions {
  justify-content: flex-end;
  margin-top: 0;
}

.contact-grid {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.contact-card {
  padding: 28px;
}

.contact-card--social {
  border-top: 4px solid var(--teal);
}

.contact-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  display: grid;
  gap: 4px;
  color: var(--muted);
}

.contact-list strong {
  color: var(--navy);
}

.video-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.video-links a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid rgba(0, 167, 165, 0.32);
  border-radius: var(--radius);
  color: var(--navy);
  background: #eefbfb;
  font-weight: 900;
}

.site-footer {
  padding: 50px 0 24px;
  color: var(--white);
  background: #071f39;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(180px, 0.8fr) minmax(190px, 0.9fr);
  gap: 32px;
  align-items: start;
}

.footer-logo {
  margin-bottom: 16px;
  color: var(--white);
}

.footer-logo img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  background: var(--white);
  border-radius: var(--radius);
}

.footer-logo span {
  font-size: 1.18rem;
}

.footer-brand p {
  max-width: 430px;
  margin: 0;
  color: #c9d8e6;
}

.footer-column h3 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.footer-column ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-column a {
  color: #c9d8e6;
  transition: color 0.2s ease;
}

.footer-column a:hover {
  color: #77f0ee;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-bottom p {
  margin: 0;
}

.digital-signature {
  color: #c9d8e6;
  font-size: 0.94rem;
}

.digital-signature a {
  color: inherit;
}

@media (max-width: 1040px) {
  .nav-link {
    padding-inline: 8px;
    font-size: 0.74rem;
  }

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

@media (max-width: 900px) {
  :root {
    --header-height: 70px;
  }

  .brand__logo {
    width: 44px;
    height: 44px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: var(--header-height);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    min-height: 44px;
    font-size: 0.82rem;
  }

  .hero {
    min-height: auto;
    padding: 72px 0;
  }

  .hero__grid,
  .two-column,
  .cta-strip__inner,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .gallery-item--wide {
    grid-column: span 1;
  }

  .cta-strip__actions {
    justify-content: flex-start;
  }

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

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 24px, var(--container));
  }

  .section {
    padding: 60px 0;
  }

  .hero {
    padding: 58px 0 62px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero__text {
    font-size: 1rem;
  }

  .hero__actions,
  .cta-strip__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .product-grid,
  .gallery-grid,
  .color-grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .product-card,
  .contact-card {
    padding: 22px;
  }

  .gallery-item,
  .gallery-item img {
    min-height: 220px;
  }

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