:root {
  --navy: #062b53;
  --navy-deep: #031d39;
  --blue: #0b4a87;
  --yellow: #fbbb18;
  --ice: #eff6fb;
  --ink: #0a2642;
  --muted: #5f7183;
  --line: rgba(6, 43, 83, .14);
  --container: min(1120px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: white; font-family: Inter, Aptos, "Segoe UI", Arial, sans-serif; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: var(--container); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 12px 18px; background: var(--yellow); font-weight: 800; }
.skip-link:focus { top: 16px; }

.page-header { position: sticky; top: 0; z-index: 20; background: rgba(3,29,57,.96); color: white; backdrop-filter: blur(14px); }
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; padding: 6px 10px; border-radius: 10px; background: white; }
.brand img { width: 150px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.nav-links a:hover { color: var(--yellow); }

.product-hero { padding: 86px 0 78px; color: white; background: radial-gradient(circle at 85% 10%, #0e578e, transparent 34%), var(--navy-deep); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 76px; }
.breadcrumb { margin: 0 0 26px; color: rgba(255,255,255,.62); font-size: .76rem; }
.breadcrumb a { color: var(--yellow); }
.eyebrow { margin: 0 0 14px; color: var(--yellow); font-size: .72rem; font-weight: 900; text-transform: uppercase; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(2.8rem, 6vw, 5.6rem); line-height: .98; letter-spacing: -.055em; }
.lead { max-width: 650px; margin: 26px 0 0; color: rgba(255,255,255,.76); font-size: 1.08rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; font-size: .76rem; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }
.button-primary { color: var(--navy-deep); background: var(--yellow); border-color: var(--yellow); }
.hero-visual { min-height: 430px; padding: 42px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.14); border-radius: 30px; background: rgba(255,255,255,.08); }
.hero-visual img { width: 100%; max-height: 350px; object-fit: contain; filter: drop-shadow(0 24px 22px rgba(0,0,0,.3)); }

.section { padding: 96px 0; }
.section-ice { background: var(--ice); }
.section-heading { max-width: 780px; margin-bottom: 42px; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.05; letter-spacing: -.045em; }
.section-heading p:last-child { color: var(--muted); }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.benefit { min-height: 205px; padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.benefit span { color: var(--yellow); font-weight: 900; }
.benefit h3 { margin: 36px 0 8px; font-size: 1.25rem; }
.benefit p { margin: 0; color: var(--muted); font-size: .92rem; }
.guide-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.guide-grid h2 { margin: 0; font-size: clamp(2.2rem, 4.5vw, 4.2rem); line-height: 1.04; letter-spacing: -.045em; }
.checklist { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.checklist li { padding: 20px 0; display: grid; grid-template-columns: 34px 1fr; gap: 14px; border-bottom: 1px solid var(--line); }
.checklist b { color: var(--yellow); }
.checklist strong { display: block; margin-bottom: 3px; }
.checklist small { color: var(--muted); font-size: .9rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-card { padding: 26px; border-radius: 18px; color: white; background: var(--navy); transition: transform .25s; }
.related-card:hover { transform: translateY(-5px); }
.related-card span { color: var(--yellow); font-size: .68rem; font-weight: 900; text-transform: uppercase; letter-spacing: .12em; }
.related-card h3 { margin: 28px 0 0; }
.contact-strip { padding: 66px 0; color: white; background: var(--navy-deep); }
.contact-grid { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 38px; }
.contact-grid h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.05; }
.contact-grid p { margin-bottom: 0; color: rgba(255,255,255,.65); }
.page-footer { padding: 34px 0; color: rgba(255,255,255,.62); background: #02172d; font-size: .8rem; }
.footer-row { display: flex; justify-content: space-between; gap: 28px; }
.footer-row a { color: white; }

@media (max-width: 840px) {
  .hero-grid, .guide-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 44px; }
  .benefit-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { min-height: 330px; }
}

@media (max-width: 620px) {
  :root { --container: calc(100vw - 28px); }
  .nav { min-height: 70px; }
  .brand img { width: 120px; }
  .nav-links a:not(:last-child) { display: none; }
  .product-hero { padding: 54px 0 62px; }
  .hero-visual { min-height: 260px; padding: 26px; }
  .section { padding: 72px 0; }
  .benefit-grid, .related-grid, .contact-grid { grid-template-columns: 1fr; }
  .contact-grid .button { width: 100%; }
  .footer-row { flex-direction: column; }
}