:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-alt: #eef2f7;
  --text: #1e2b38;
  --muted: #5d6b79;
  --line: #d7dee6;
  --accent: #b91923;
  --accent-dark: #8e141d;
  --navy: #12304a;
  --shadow: 0 14px 36px rgba(12, 33, 53, 0.10);
  --radius: 18px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
img {
  max-width: 100%;
  display: block;
}
a { color: inherit; }
.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}
.section {
  padding: 4.5rem 0;
}
.section-alt {
  background: var(--surface-alt);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(18, 48, 74, 0.92);
  backdrop-filter: blur(10px);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,0.14);
}
.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 72px;
}
.brand {
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-nav a {
  text-decoration: none;
  color: #e7eef5;
  font-size: 0.95rem;
}
.site-nav a:hover,
.site-footer a:hover {
  color: #fff;
}
.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: end;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(10,22,34,0.18), rgba(10,22,34,0.78)),
    url('assets/img/boot-bij-lift.jpg') center/cover no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,22,34,0.62), rgba(10,22,34,0.15));
}
.hero-content {
  position: relative;
  padding: 7rem 0 6rem;
  max-width: 760px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  opacity: 0.9;
}
.hero h1 {
  font-size: clamp(2.3rem, 7vw, 5rem);
  line-height: 0.96;
  margin: 0 0 0.8rem;
}
.hero-specs {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 700;
  margin: 0 0 1rem;
}
.hero-copy {
  font-size: 1.08rem;
  max-width: 62ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.5rem;
}
.button {
  display: inline-block;
  padding: 0.92rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: 0.2s ease;
}
.button-primary {
  background: var(--accent);
  color: #fff;
}
.button-primary:hover {
  background: var(--accent-dark);
}
.button-secondary {
  border: 1px solid rgba(255,255,255,0.7);
  color: #fff;
}
.button-secondary:hover {
  background: rgba(255,255,255,0.08);
}
.two-col {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
}
.intro-grid {
  align-items: start;
}
h2 {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  color: var(--navy);
}
h3 {
  margin-top: 0;
  color: var(--navy);
}
.section-intro {
  max-width: 75ch;
  color: var(--muted);
}
.highlight-box,
.spec-card,
.card,
.doc-card,
.contact-box,
.quote-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.highlight-box {
  padding: 1.2rem 1.3rem;
  margin-top: 1.4rem;
}
.spec-card {
  padding: 1.4rem;
}
.spec-list {
  margin: 0;
}
.spec-list > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 0.8rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
}
.spec-list > div:last-child {
  border-bottom: 0;
}
.spec-list dt {
  font-weight: 700;
  color: var(--muted);
}
.spec-list dd {
  margin: 0;
}
.cards {
  display: grid;
  gap: 1.3rem;
}
.three-up {
  grid-template-columns: repeat(3, 1fr);
}
.two-up {
  grid-template-columns: repeat(2, 1fr);
}
.card {
  padding: 1.35rem;
}
.image-strip,
.docs-grid,
.gallery-grid {
  display: grid;
  gap: 1rem;
}
.image-strip {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 1.6rem;
}
.image-strip figure,
.docs-grid figure,
.gallery-grid figure {
  margin: 0;
}
.image-strip img,
.docs-grid img,
.gallery-grid img,
.image-stack img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}
.image-strip figure,
.gallery-grid figure {
  display: grid;
  gap: 0.55rem;
}
figcaption {
  font-size: 0.92rem;
  color: var(--muted);
}
.image-stack {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}
.tech-card {
  margin-bottom: 1rem;
}
.quote-block {
  padding: 1.4rem 1.5rem;
  margin: 1.5rem 0;
  border-left: 6px solid var(--accent);
}
.docs-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 1.5rem;
}
.doc-card {
  padding: 0.85rem;
}
.doc-card img {
  aspect-ratio: 3 / 4;
}
.gallery-grid {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 1.4rem;
}
.gallery-grid img {
  aspect-ratio: 4 / 3;
}
.contact-strip {
  background: linear-gradient(135deg, #102a41, #173d5d);
  color: #fff;
}
.contact-box {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.3rem;
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.15);
  box-shadow: none;
}
.status-note {
  padding: 1rem 1.1rem;
  background: rgba(255,255,255,0.07);
  border-radius: 14px;
}
.site-footer {
  background: #0f2234;
  color: #d8e4ef;
  padding: 1.1rem 0;
}
.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}
.site-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .two-col,
  .contact-box,
  .three-up,
  .gallery-grid,
  .docs-grid,
  .image-strip,
  .two-up {
    grid-template-columns: 1fr 1fr;
  }
  .contact-box,
  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-nav {
    display: none;
  }
  .hero {
    min-height: 78vh;
    background-position: 62% center;
  }
  .section {
    padding: 3.3rem 0;
  }
  .three-up,
  .gallery-grid,
  .docs-grid,
  .image-strip,
  .two-up {
    grid-template-columns: 1fr;
  }
  .spec-list > div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
  .footer-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}