:root {
  --navy: #061521;
  --cyan: #13d7c1;
  --ink: #10222b;
  --muted: #617078;
  --line: #dce6e5;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #f7faf9;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}
a { color: inherit; text-decoration: none; }
body { top: 0 !important; }

.topbar {
  height: 72px;
  padding: 0 max(22px, calc((100vw - var(--max)) / 2));
  display: flex;
  align-items: center;
  gap: 28px;
  background: var(--navy);
  color: #fff;
}
.brand { font-weight: 900; letter-spacing: 4px; font-size: 19px; }
.topbar nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 12px;
}
.cta {
  display: inline-block;
  padding: 14px 20px;
  background: var(--cyan);
  color: #04232a;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: .7px;
  font-size: 11px;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: rgba(255,255,255,.72);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .8px;
}
.topbar nav + .language-switcher { margin-left: 10px; }
.language-select {
  min-width: 104px;
  border: 1px solid rgba(255,255,255,.24);
  background: rgba(255,255,255,.08);
  color: #fff;
  padding: 8px 28px 8px 10px;
  font-size: 11px;
  outline: 0;
}
.language-select option { color: #10222b; }
#google_translate_element,
.goog-te-banner-frame,
.skiptranslate iframe { display: none !important; }

.hero {
  background: linear-gradient(100deg, rgba(2,17,27,.97), rgba(4,42,55,.8)), url("../assets/hero-bridge-simulator.png") center/cover;
  color: #fff;
  padding: 100px max(22px, calc((100vw - var(--max)) / 2));
}
.bridge-hero,
.bridge-product-hero {
  background: linear-gradient(90deg, rgba(2,17,27,.96), rgba(2,17,27,.7) 48%, rgba(2,17,27,.15)), url("../assets/erun-full-mission-bridge-simulator.png") center/cover;
}
.engine-hero,
.fuel-hero {
  background: linear-gradient(100deg, rgba(2,17,27,.98), rgba(20,66,69,.78)), url("../assets/hero-bridge-simulator.png") center/cover;
}
.vts-hero,
.mission-hero,
.auto-hero {
  background: linear-gradient(100deg, rgba(2,17,27,.98), rgba(17,54,86,.76)), url("../assets/hero-bridge-simulator.png") center/cover;
}
.product-hero {
  background: linear-gradient(90deg, rgba(2,17,27,.94), rgba(2,17,27,.78) 46%, rgba(2,17,27,.28)), var(--hero-image) center/cover;
}
.crumb {
  font-size: 10px;
  color: #8facb4;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: clamp(42px, 6.5vw, 82px);
  line-height: 1;
  margin: 38px 0 22px;
  max-width: 930px;
  letter-spacing: -3px;
}
.hero p {
  max-width: 690px;
  line-height: 1.7;
  color: #bfd0d4;
  font-size: 17px;
}
.hero-actions {
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 32px;
}
.outline {
  border: 1px solid #59717a;
  padding: 13px 18px;
  font-size: 11px;
  text-transform: uppercase;
}

.wrap {
  width: min(var(--max), calc(100% - 44px));
  margin: auto;
}
.product-showcase { padding-top: 55px; }
.product-showcase img,
.system-visual {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  background: #e9f1f0;
}
.product-showcase img { height: auto; }
.product-showcase p {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  margin: 12px 0 0;
}

.system-visual {
  position: relative;
  min-height: 440px;
  overflow: hidden;
  background: linear-gradient(135deg, #061521, #0b3e4b 58%, #0bb9ab);
  padding: 52px;
}
.system-visual:before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 16%, rgba(19,215,193,.34), transparent 30%),
    linear-gradient(transparent 24px, rgba(255,255,255,.06) 25px),
    linear-gradient(90deg, transparent 24px, rgba(255,255,255,.05) 25px);
  background-size: auto, 25px 25px, 25px 25px;
  opacity: .75;
}
.visual-screen {
  position: relative;
  min-height: 235px;
  border: 1px solid rgba(182,238,233,.4);
  background: rgba(4,24,35,.72);
  box-shadow: 0 28px 80px rgba(0,0,0,.24);
  padding: 34px;
  color: #fff;
}
.visual-screen span {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--cyan);
}
.visual-screen strong {
  display: block;
  max-width: 720px;
  margin: 42px 0 14px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1;
  letter-spacing: -2px;
}
.visual-screen small {
  display: block;
  max-width: 560px;
  color: #bdd2d5;
  font-size: 15px;
  line-height: 1.6;
}
.visual-console {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 12px;
  width: min(760px, 82%);
  margin: 26px auto 0;
}
.visual-console i {
  height: 78px;
  background: rgba(255,255,255,.88);
  border-top: 4px solid var(--cyan);
  box-shadow: 0 15px 40px rgba(0,0,0,.18);
}
.engine .visual-console i,
.fuel .visual-console i { border-top-color: #68d391; }
.cargo .visual-console i { border-top-color: #f4b95b; }
.vts .visual-console i,
.mission .visual-console i,
.auto .visual-console i { border-top-color: #8ec5ff; }
.vr .visual-console i { border-top-color: #b5a7ff; }
.media-section {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 38px;
  align-items: center;
}
.media-section .system-visual { min-height: 360px; }

.section { padding: 85px 0; }
.eyebrow {
  color: #078d81;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 10px;
  font-weight: bold;
}
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
}
.section h2 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.06;
  letter-spacing: -2px;
  margin: 14px 0;
}
.lead,
.section p {
  line-height: 1.75;
  color: var(--muted);
}
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: #fff;
}
.facts div {
  padding: 28px;
  border-right: 1px solid var(--line);
}
.facts div:last-child { border: 0; }
.facts strong {
  display: block;
  font-size: 22px;
  color: #087e75;
  margin-bottom: 8px;
}
.facts span {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--muted);
}
.dark {
  background: var(--navy);
  color: #fff;
}
.dark .wrap p { color: #a8bbc0; }
.feature-grid,
.application-grid,
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 38px;
}
.feature-grid article,
.application-grid article,
.catalog-grid article {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
}
.dark .feature-grid article {
  background: #0b2937;
  border-color: #23434f;
}
.feature-grid span { color: var(--cyan); font-size: 10px; }
.feature-grid h3,
.application-grid h3,
.catalog-grid h3 {
  font-size: 18px;
  margin: 22px 0 10px;
}
.feature-grid p,
.application-grid p,
.catalog-grid p { font-size: 13px; }
.configs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.configs article {
  border-top: 3px solid var(--cyan);
  padding: 28px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(14,48,53,.07);
}
.configs h3 { font-size: 22px; }
.configs ul {
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.9;
  font-size: 13px;
}
.faq details {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.faq summary {
  font-weight: bold;
  cursor: pointer;
}
.faq p { font-size: 14px; }
.inquiry {
  padding: 70px max(22px, calc((100vw - var(--max)) / 2));
  background: #0a3545;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.inquiry h2 { font-size: 38px; margin: 0; }
.inquiry p { color: #b7c8cc; }
.footer {
  padding: 35px max(22px, calc((100vw - var(--max)) / 2));
  background: #04121b;
  color: #8fa4aa;
  font-size: 11px;
}
.catalog-hero {
  padding: 80px max(22px, calc((100vw - var(--max)) / 2));
  background: var(--navy);
  color: #fff;
}
.catalog-hero h1 {
  font-size: 60px;
  letter-spacing: -3px;
  max-width: 800px;
}
.catalog-section { padding: 70px 0; }
.catalog-section h2 { font-size: 34px; }
.catalog-grid article a {
  color: #087e75;
  font-size: 10px;
  text-transform: uppercase;
  font-weight: bold;
}
.category-note {
  color: var(--muted);
  max-width: 740px;
  line-height: 1.7;
}

@media (max-width: 800px) {
  .topbar nav { display: none; }
  .split,
  .feature-grid,
  .application-grid,
  .catalog-grid,
  .configs,
  .media-section { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
  .hero h1 { letter-spacing: -2px; }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .system-visual {
    min-height: 330px;
    padding: 24px;
  }
  .visual-screen {
    min-height: 210px;
    padding: 24px;
  }
  .visual-console {
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }
  .inquiry { display: block; }
  .inquiry .cta { margin-top: 20px; }
  .language-switcher span { display: none; }
  .language-select { min-width: 92px; }
}