:root {
  --navy: #082f63;
  --blue: #087fc2;
  --orange: #f47a18;
  --ink: #14263c;
  --muted: #5d6c7e;
  --line: #d8e1e9;
  --paper: #f4f7fa;
  --white: #ffffff;
  --black: #09111a;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}
a { color: inherit; }
img { display: block; max-width: 100%; }

.site-header {
  width: min(calc(100% - 40px), var(--max));
  min-height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--white);
  background: var(--navy);
  border-top: 5px solid var(--orange);
  font: 800 16px/1 Georgia, serif;
}
.brand strong, .brand small { display: block; }
.brand strong { font: 700 18px/1.1 Georgia, serif; }
.brand small { margin-top: 4px; color: var(--muted); font-size: 11px; text-transform: uppercase; }
.site-header nav { display: flex; gap: 24px; }
.site-header nav a { font-size: 13px; font-weight: 700; text-decoration: none; }
.site-header nav a:hover { color: var(--blue); }

.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 610px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr);
  align-items: center;
  gap: 72px;
  padding: 68px 0 76px;
}
.eyebrow { margin: 0 0 14px; color: var(--orange); font-size: 12px; font-weight: 800; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; color: var(--black); font-family: Georgia, "Times New Roman", serif; }
h1 { max-width: 760px; margin-bottom: 22px; font-size: clamp(42px, 5.3vw, 72px); line-height: 1.02; }
h2 { margin-bottom: 18px; font-size: clamp(30px, 3.4vw, 46px); line-height: 1.08; }
h3 { font-size: 22px; line-height: 1.2; }
.hero-intro { max-width: 650px; color: var(--muted); font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 38px; }
.button { min-height: 48px; display: inline-flex; align-items: center; padding: 0 20px; border: 1px solid var(--navy); font-size: 13px; font-weight: 800; text-decoration: none; }
.button-primary { color: var(--white); background: var(--navy); }
.button-primary:hover { background: var(--blue); }
.button-secondary { color: var(--navy); background: var(--white); }
.button-secondary:hover { color: var(--white); background: var(--navy); }
.facts-strip { margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts-strip div { min-width: 0; padding: 16px 14px; border-right: 1px solid var(--line); }
.facts-strip div:first-child { padding-left: 0; }
.facts-strip div:last-child { border-right: 0; }
.facts-strip dt { color: var(--muted); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.facts-strip dd { margin: 4px 0 0; font-size: 13px; font-weight: 700; }
.hero-visual { position: relative; margin: 0; border: 1px solid var(--line); background: var(--paper); }
.hero-visual::before { content: "PRODUCT FACT / 01"; position: absolute; top: -18px; left: 18px; padding: 8px 11px; color: var(--white); background: var(--orange); font-size: 10px; font-weight: 800; z-index: 1; }
.hero-visual img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; background: var(--white); }
.hero-visual figcaption { display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; padding: 16px 18px; border-top: 1px solid var(--line); }
.hero-visual figcaption span { grid-row: span 2; align-self: center; color: var(--muted); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.hero-visual figcaption strong { font-size: 14px; }
.hero-visual figcaption em { color: var(--muted); font-size: 12px; font-style: normal; }

.section { padding: 88px max(20px, calc((100% - var(--max)) / 2)); }
.section-heading { max-width: 760px; margin-bottom: 42px; }
.section-heading > p:last-child { color: var(--muted); font-size: 17px; }
.section-dark { color: #d8e4ef; background: var(--navy); }
.section-dark h2 { color: var(--white); }
.section-dark .section-heading > p:last-child { color: #bfd0e0; }
.checklist { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid rgba(255,255,255,.22); list-style: none; }
.checklist li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 26px 24px 26px 0; border-bottom: 1px solid rgba(255,255,255,.22); }
.checklist li:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.22); }
.checklist li:nth-child(even) { padding-left: 24px; }
.checklist > li > span { color: #74c3ef; font: 700 18px/1 Georgia, serif; }
.checklist strong { color: var(--white); }
.checklist p { margin: 6px 0 0; color: #bfd0e0; font-size: 14px; }

.section-heading-row { max-width: none; display: grid; grid-template-columns: 1fr .72fr; gap: 70px; align-items: end; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.product { border-top: 4px solid var(--blue); background: var(--paper); }
.product-image { display: block; border-right: 1px solid var(--line); border-left: 1px solid var(--line); background: var(--white); }
.product-image img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; transition: transform .25s ease; }
.product:hover .product-image img { transform: scale(1.025); }
.product-body { min-height: 245px; padding: 22px; border: 1px solid var(--line); }
.product-body > p { margin: 0 0 8px; color: var(--orange); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.product-body h3 a { text-decoration: none; }
.product-body h3 a:hover { color: var(--blue); }
.product-body dl { margin: 26px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.product-body dl div { min-width: 0; padding: 13px 8px 0; border-right: 1px solid var(--line); }
.product-body dl div:first-child { padding-left: 0; }
.product-body dl div:last-child { border-right: 0; }
.product-body dt { color: var(--muted); font-size: 9px; font-weight: 800; text-transform: uppercase; }
.product-body dd { margin: 3px 0 0; overflow-wrap: anywhere; font-size: 12px; font-weight: 700; }
.catalog-note { margin-top: 26px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; padding: 24px 28px; color: var(--white); background: var(--black); }
.catalog-note p { margin: 0; color: #c5ced8; font-size: 14px; }
.catalog-note a { color: #ff9d4e; font-size: 13px; font-weight: 800; }

.data-section { background: var(--paper); }
.resource-list { border-top: 1px solid var(--line); }
.resource-list > a { display: grid; grid-template-columns: 58px 1fr auto; align-items: center; gap: 24px; min-height: 102px; padding: 18px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.resource-list > a > span { color: var(--blue); font: 700 17px/1 Georgia, serif; }
.resource-list strong { display: block; font-size: 17px; }
.resource-list p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.resource-list b { color: var(--orange); font-size: 12px; text-transform: uppercase; }
.resource-list > a:hover strong { color: var(--blue); }

.topic-labs { padding: 88px max(20px, calc((100% - var(--max)) / 2)); background: var(--white); }
.topic-lab-list { border-top: 1px solid var(--line); }
.topic-lab-list > a { min-height: 116px; display: grid; grid-template-columns: 62px 1fr auto; align-items: center; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.topic-lab-list > a > span { color: var(--orange); font: 700 23px/1 Georgia, serif; }
.topic-lab-list strong { display: block; font-size: 18px; }
.topic-lab-list p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }
.topic-lab-list b { color: var(--blue); font-size: 11px; text-transform: uppercase; }
.topic-lab-list > a:hover strong { color: var(--blue); }

.official-sites { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: center; padding: 82px 0; }
.official-sites h2 { margin-bottom: 0; font-size: 36px; }
.official-links { border-top: 1px solid var(--line); }
.official-links a { display: block; padding: 22px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.official-links strong, .official-links span { display: block; }
.official-links strong { font-size: 16px; }
.official-links span { margin-top: 4px; color: var(--muted); font-size: 13px; }
.official-links a:hover strong { color: var(--blue); }

footer { padding: 28px max(20px, calc((100% - var(--max)) / 2)); display: flex; justify-content: space-between; gap: 30px; color: #bcc8d5; background: var(--black); font-size: 12px; }
footer p { max-width: 520px; margin: 0; }

@media (max-width: 850px) {
  .site-header { width: min(calc(100% - 28px), var(--max)); }
  .site-header nav { display: none; }
  .hero { width: min(calc(100% - 28px), var(--max)); min-height: 0; grid-template-columns: 1fr; gap: 48px; padding: 50px 0 60px; }
  h1 { font-size: 44px; }
  .section { padding: 64px 20px; }
  .checklist, .product-grid { grid-template-columns: 1fr; }
  .checklist li:nth-child(odd) { border-right: 0; }
  .checklist li:nth-child(even) { padding-left: 0; }
  .section-heading-row, .official-sites { grid-template-columns: 1fr; gap: 28px; }
  .product-body { min-height: 0; }
  .catalog-note { grid-template-columns: 1fr; }
  .official-sites { width: min(calc(100% - 40px), var(--max)); padding: 64px 0; }
  footer { flex-direction: column; }
}

@media (max-width: 520px) {
  body { font-size: 15px; }
  h1 { font-size: 38px; }
  h2 { font-size: 30px; }
  .hero-actions .button { width: 100%; }
  .facts-strip { grid-template-columns: 1fr; }
  .facts-strip div { padding: 12px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .facts-strip div:last-child { border-bottom: 0; }
  .resource-list > a { grid-template-columns: 44px 1fr; gap: 12px; }
  .resource-list b { grid-column: 2; }
  .topic-lab-list > a { grid-template-columns: 44px 1fr; gap: 12px; }
  .topic-lab-list b { grid-column: 2; }
  .product-body dl { grid-template-columns: 1fr; }
  .product-body dl div { padding: 10px 0; border-right: 0; border-bottom: 1px solid var(--line); }
}