:root {
  --ink: #17212b;
  --muted: #5c6b78;
  --line: #d9e2ea;
  --blue: #0b5d8e;
  --teal: #07837d;
  --yellow: #f2c94c;
  --bg: #f5f8fb;
  --white: #fff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Arial, "Tahoma", sans-serif;
  line-height: 1.7;
}

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

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

.topbar {
  background: #0c2538;
  color: #d7e7f2;
  font-size: 13px;
}

.topbar .inner,
.header .inner,
.section,
.footer .inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar .inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
}

.brand img {
  width: 178px;
  height: auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  font-size: 14px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 6px;
  color: #273747;
}

.nav a:hover,
.nav a.active {
  background: #e8f2f8;
  color: var(--blue);
}

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: #0b314d;
}

.hero:before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 26, 42, .88), rgba(7, 26, 42, .45), rgba(7, 26, 42, .18));
  z-index: 1;
}

.hero img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}

.hero .copy {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  left: 50%;
  transform: translateX(-50%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--yellow);
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  font-size: clamp(34px, 6vw, 58px);
}

.hero p:not(.eyebrow) {
  max-width: 660px;
  margin: 18px 0 0;
  font-size: 18px;
}

.section {
  padding: 54px 0;
}

.section.compact {
  padding-top: 28px;
}

.title-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.title-row p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card .body {
  padding: 22px;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
}

.btn.secondary {
  background: var(--teal);
}

.panel {
  background: #fff;
  border-top: 4px solid var(--blue);
  padding: 28px;
}

.panel p {
  color: var(--muted);
}

.list {
  padding-left: 20px;
  color: var(--muted);
}

.list li {
  margin: 8px 0;
}

.spec {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
}

.spec th,
.spec td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.spec th {
  width: 210px;
  background: #edf4f8;
  color: #244255;
}

.breadcrumb {
  padding: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--blue);
}

.product-hero {
  background: #fff;
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 28px;
  align-items: start;
}

.sidebox {
  position: sticky;
  top: 96px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.sidebox a {
  display: block;
  padding: 9px 0;
  color: var(--blue);
  border-bottom: 1px solid #edf2f6;
}

.footer {
  margin-top: 40px;
  background: #0c2538;
  color: #d9e8f1;
}

.footer .inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0;
}

.footer small {
  color: #9fb6c6;
}

@media (max-width: 860px) {
  .header .inner,
  .topbar .inner,
  .footer .inner,
  .title-row {
    display: block;
  }

  .nav {
    justify-content: flex-start;
    margin-top: 12px;
  }

  .hero img {
    height: 420px;
  }

  .grid.three,
  .grid.two,
  .product-layout {
    grid-template-columns: 1fr;
  }

  .sidebox {
    position: static;
  }

  .spec th,
  .spec td {
    display: block;
    width: 100%;
  }
}