:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5f6b7a;
  --line: #d9dee7;
  --soft: #f5f7fa;
  --paper: #ffffff;
  --navy: #0b2d4d;
  --red: #d91f26;
  --orange: #e87526;
  --green: #2d6a4f;
  --shadow: 0 18px 45px rgba(17, 24, 39, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: 0;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 12px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand img { width: 156px; height: 62px; object-fit: contain; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 4px; flex-wrap: wrap; }
.nav-link {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border-radius: 6px;
  color: #253142;
  font-size: 14px;
  font-weight: 700;
}
.nav-link:hover, .nav-link.active { background: var(--soft); color: var(--red); }
.header-cta {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border-radius: 6px;
  background: var(--red);
  color: white;
  font-weight: 800;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: white;
  border-radius: 6px;
}
.menu-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--ink); }

.hero {
  position: relative;
  min-height: clamp(560px, 78vh, 780px);
  display: flex;
  align-items: center;
  background-image: var(--hero-image);
  background-size: cover;
  background-position: center;
  color: white;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 84px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), var(--paper));
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 19, 32, 0.86), rgba(8, 19, 32, 0.58), rgba(8, 19, 32, 0.18));
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(860px, calc(100% - 36px));
  margin-left: clamp(18px, 6vw, 96px);
  padding: 64px 0 120px;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: 0;
}
.hero-lead {
  max-width: 700px;
  margin: 24px 0 0;
  color: rgba(255,255,255,0.9);
  font-size: clamp(18px, 2vw, 24px);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 900;
}
.button svg { width: 20px; height: 20px; fill: currentColor; flex: 0 0 auto; }
.button.primary { background: var(--red); color: white; }
.button.secondary { background: white; color: var(--ink); border-color: var(--line); }
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow); }

.proof-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.proof-band div {
  background: white;
  padding: 26px clamp(18px, 3vw, 44px);
}
.proof-band strong { display: block; font-size: clamp(32px, 5vw, 54px); line-height: 1; color: var(--navy); }
.proof-band span { display: block; margin-top: 8px; color: var(--muted); font-weight: 700; }

.section {
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 76px);
}
.section-head {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}
.section h2, .section-head h2, .rfq-section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
}
.section p, .section-head p { color: var(--muted); font-size: 17px; }
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.section-image, .image-pair img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}
.image-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.image-pair img:first-child { grid-column: span 2; aspect-ratio: 16 / 9; }

.category-grid, .product-grid, .application-grid, .guide-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 18px;
}
.category-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.category-card {
  display: grid;
  min-height: 252px;
  grid-template-rows: 1fr auto auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}
.category-card img { width: 100%; height: 142px; object-fit: contain; }
.category-card span { margin-top: 14px; font-size: 18px; font-weight: 900; }
.category-card small { color: var(--muted); font-weight: 700; }
.category-card:hover { border-color: var(--red); box-shadow: var(--shadow); }

.application-grid, .guide-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.application-grid div, .guide-grid a, .spec-panel, .contact-strip {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: white;
}
.application-grid h3, .guide-grid h3, .spec-panel h3 { margin: 0 0 10px; font-size: 20px; }
.application-grid p, .guide-grid p { margin: 0; color: var(--muted); }

.check-list { padding: 0; margin: 22px 0 0; list-style: none; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 26px; color: #243041; font-weight: 700; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 10px; height: 10px; border-radius: 50%; background: var(--green); }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; }
.pill-list span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--soft);
  border: 1px solid var(--line);
  font-weight: 800;
  color: #2d3748;
}
.text-link { display: inline-block; margin-top: 20px; color: var(--red); font-weight: 900; }

.product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.product-card {
  display: grid;
  grid-template-rows: 220px auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: white;
}
.product-card img { width: 100%; height: 220px; object-fit: contain; background: #f8fafc; padding: 14px; }
.product-card > div { padding: 20px; }
.product-card h3 { margin: 0 0 14px; font-size: 19px; line-height: 1.25; }
.product-card dl { display: grid; gap: 10px; margin: 0; }
.product-card dt { color: var(--muted); font-size: 12px; font-weight: 900; text-transform: uppercase; }
.product-card dd { margin: 0; color: #263241; }

.rfq-section {
  padding: clamp(64px, 9vw, 112px) clamp(18px, 5vw, 76px);
  background: var(--soft);
}
.rfq-form {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 28px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.rfq-form label { display: grid; gap: 7px; font-weight: 800; }
.rfq-form label span { font-size: 14px; }
.rfq-form input, .rfq-form select, .rfq-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font: inherit;
  background: white;
}
.rfq-form textarea { resize: vertical; }
.wide { grid-column: 1 / -1; }
.hp-field { display: none; }
.form-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 22px; }
.direct-email { color: var(--navy); font-weight: 900; }
.form-status { min-height: 24px; color: var(--red); font-weight: 800; }
.contact-strip {
  width: min(1040px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-footer {
  background: #080f18;
  color: white;
  padding: 56px clamp(18px, 5vw, 76px);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
  width: min(1180px, 100%);
  margin: 0 auto;
}
.footer-logo { width: 170px; height: 88px; object-fit: contain; margin-bottom: 14px; }
.site-footer h2 { font-size: 15px; margin: 0 0 12px; color: #f8fafc; }
.site-footer p, .site-footer a { color: #c7d0dc; }
.site-footer a { display: block; margin: 8px 0; }
.legal-name { font-size: 13px; }

@media (max-width: 1040px) {
  .site-header { grid-template-columns: auto auto auto; justify-content: space-between; }
  .menu-toggle { display: block; }
  .site-nav {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
    justify-content: flex-start;
    padding-top: 10px;
  }
  .site-nav.open { display: flex; }
  .category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .application-grid, .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split, .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .site-header { gap: 10px; padding: 10px 14px; }
  .brand img { width: 122px; height: 50px; }
  .header-cta { min-height: 40px; padding: 0 12px; font-size: 13px; }
  .hero { min-height: 620px; }
  .hero-content { width: calc(100% - 28px); margin-left: 14px; padding-bottom: 92px; }
  .hero h1 { font-size: 42px; }
  .proof-band, .category-grid, .application-grid, .guide-grid, .product-grid, .form-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 220px; }
  .image-pair { grid-template-columns: 1fr; }
  .image-pair img:first-child { grid-column: auto; }
  .rfq-form { padding: 18px; }
  .contact-strip { align-items: flex-start; flex-direction: column; }
}