:root {
  color-scheme: light;
  --ink: #0b1830;
  --ink-soft: #263750;
  --muted: #68758a;
  --blue: #397fe8;
  --blue-bright: #70b7ff;
  --ice: #eaf3ff;
  --paper: #f7f9fc;
  --white: #ffffff;
  --line: #dce4ef;
  --radius-lg: 32px;
  --radius-md: 22px;
  --shadow: 0 20px 55px rgba(24, 54, 96, .09);
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 2%, rgba(112, 183, 255, .16), transparent 25rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 249, 252, .86);
  border-bottom: 1px solid rgba(220, 228, 239, .8);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  width: 184px;
  height: 68px;
  display: block;
  overflow: hidden;
  text-decoration: none;
}

.brand-logo-image,
.footer-logo-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: 50% 47%;
}

.header-actions,
.nav-links {
  display: flex;
  align-items: center;
}

.header-actions { gap: 18px; }

.nav-links {
  gap: 28px;
  color: var(--ink-soft);
  font-size: .92rem;
  font-weight: 650;
}

.nav-links a {
  text-decoration: none;
  transition: color .2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible { color: var(--blue); }

.nav-cta {
  padding: 10px 16px;
  color: var(--white) !important;
  background: var(--ink);
  border-radius: 999px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 5px 16px rgba(24, 54, 96, .06);
}

.language-switch button {
  width: 38px;
  height: 34px;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: .75rem;
  font-weight: 850;
  letter-spacing: .04em;
}

.language-switch button[aria-pressed="true"] {
  color: var(--white);
  background: var(--blue);
}

.research-strip {
  padding: 10px 20px;
  color: var(--white);
  background: var(--ink);
  text-align: center;
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .02em;
}

.product-main { padding-block: 42px 110px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 750;
}

.back-link:hover,
.back-link:focus-visible { color: var(--blue); }

.product-hero {
  display: grid;
  grid-template-columns: 1.03fr .97fr;
  gap: clamp(42px, 7vw, 90px);
  align-items: center;
}

.product-stage {
  position: relative;
  min-width: 0;
  min-height: 430px;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px);
  background:
    radial-gradient(circle at 80% 20%, rgba(112,183,255,.22), transparent 13rem),
    linear-gradient(140deg, rgba(255,255,255,.92), rgba(218,235,255,.8));
  border: 1px solid rgba(220, 228, 239, .9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.product-stage::before {
  content: "";
  position: absolute;
  width: 270px;
  aspect-ratio: 1;
  right: -120px;
  bottom: -150px;
  border: 46px solid rgba(57,127,232,.07);
  border-radius: 50%;
}

.product-image {
  position: relative;
  z-index: 1;
  width: min(112%, 690px);
  height: auto;
  display: block;
  filter: drop-shadow(0 22px 28px rgba(17, 42, 80, .18));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--blue);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

.product-copy h1 {
  margin-bottom: 20px;
  font-size: clamp(3.2rem, 7vw, 6.2rem);
  line-height: .94;
  letter-spacing: -.07em;
}

.product-lead {
  max-width: 560px;
  margin-bottom: 24px;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.7;
}

.research-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 30px;
  padding: 9px 13px;
  color: #0f5f52;
  background: #e5f7f2;
  border: 1px solid #bfe7dc;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.research-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  background: #168a73;
  border-radius: 50%;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.button:hover { transform: translateY(-2px); }

.button-primary {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
  box-shadow: 0 12px 24px rgba(11, 24, 48, .18);
}

.button-secondary { background: rgba(255,255,255,.78); }

.details-section { padding-top: 72px; }

.details-heading {
  max-width: 720px;
  margin-bottom: 30px;
}

.details-heading h2 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: -.05em;
}

.details-heading p {
  margin-bottom: 0;
  color: var(--muted);
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.fact-card,
.info-card {
  padding: 24px;
  background: var(--white);
  border: 1px solid rgba(220, 228, 239, .9);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 32px rgba(30, 62, 105, .05);
}

.fact-label {
  display: block;
  margin-bottom: 7px;
  color: var(--blue);
  font-size: .7rem;
  font-weight: 850;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.fact-value {
  margin: 0;
  color: var(--ink-soft);
  font-size: .98rem;
  font-weight: 720;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.info-card h2 {
  margin-bottom: 13px;
  font-size: 1.55rem;
  letter-spacing: -.035em;
}

.info-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.disclaimer {
  position: relative;
  overflow: hidden;
  margin-top: 24px;
  padding: clamp(28px, 5vw, 48px);
  color: var(--white);
  background: var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(11, 24, 48, .18);
}

.disclaimer::after {
  content: "";
  position: absolute;
  width: 220px;
  aspect-ratio: 1;
  top: -130px;
  right: -90px;
  border: 42px solid rgba(112,183,255,.1);
  border-radius: 50%;
}

.disclaimer strong {
  position: relative;
  z-index: 1;
  display: block;
  margin-bottom: 10px;
  color: var(--blue-bright);
  font-size: .77rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.disclaimer h2 {
  position: relative;
  z-index: 1;
  margin-bottom: 12px;
  font-size: clamp(1.65rem, 3vw, 2.55rem);
  line-height: 1.08;
  letter-spacing: -.04em;
}

.disclaimer p {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin-bottom: 0;
  color: rgba(255,255,255,.78);
}

footer {
  padding-block: 33px 42px;
  border-top: 1px solid var(--line);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: .84rem;
}

.footer-logo-frame {
  width: 184px;
  height: 68px;
  overflow: hidden;
}

.footer-row p { margin: 0; }

:focus-visible {
  outline: 3px solid rgba(57, 127, 232, .45);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .product-hero { grid-template-columns: 1fr; }
  .product-stage { min-height: 380px; }
  .facts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .nav { min-height: 70px; }
  .brand { width: 150px; height: 60px; }
  .header-actions { gap: 8px; }
  .nav-links { gap: 0; }
  .nav-links a:not(.nav-cta) { display: none; }
  .nav-cta { padding: 9px 14px; }
  .language-switch button { width: 34px; height: 32px; }
  .research-strip { padding-inline: 14px; }
  .product-main { padding-block: 30px 76px; }
  .product-stage { min-height: 300px; padding: 22px; border-radius: 26px; }
  .product-image { width: 122%; max-width: none; }
  .product-copy h1 { font-size: clamp(3rem, 18vw, 4.6rem); }
  .content-grid { grid-template-columns: 1fr; }
  .footer-row { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 430px) {
  .brand { width: 140px; height: 56px; }
  .nav-cta { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}