:root {
  --blue-primary: #233b6e;
  --blue-secondary: #2f5095;
  --blue-deep: #172647;
  --gold: #dfcc8c;
  --cream: #eadeb4;
  --light: #eff0f4;
  --ink: #172647;
  --muted: #bfc7d9;
  --paper: #f5f1e4;
  --line: rgba(239, 240, 244, .18);
  --radius: 18px;
  color-scheme: dark;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--light);
  background: var(--blue-primary);
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--blue-primary); line-height: 1.55; }
a { color: var(--cream); text-underline-offset: .2em; }
a:hover { color: #fff; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

.skip-link {
  position: fixed; z-index: 20; top: 10px; left: 10px;
  padding: .65rem 1rem; background: var(--gold); color: var(--ink);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  max-width: 1220px; margin: 0 auto; padding: 1.1rem clamp(1rem, 4vw, 3rem);
  background: rgba(35, 59, 110, .84); backdrop-filter: blur(14px);
}
.brand { display: inline-flex; gap: .7rem; align-items: center; color: var(--light); text-decoration: none; font-weight: 720; letter-spacing: -.02em; }
.brand-mark { width: 24px; height: 24px; border: 2px solid var(--gold); border-radius: 50%; position: relative; flex: 0 0 auto; }
.brand-mark::after { content: ""; position: absolute; left: 5px; right: 5px; bottom: 5px; height: 4px; border-bottom: 2px solid var(--gold); border-radius: 50%; }

nav { display: flex; align-items: center; gap: clamp(.7rem, 2vw, 1.4rem); font-size: .9rem; }
nav a { color: var(--muted); text-decoration: none; font-weight: 700; }
nav a:hover { color: var(--light); }
.nav-cta { padding: .55rem .9rem; border: 1px solid rgba(239,240,244,.32); border-radius: 999px; color: var(--light); }

main > section, .site-footer {
  max-width: 1220px;
  margin: 0 auto;
  padding: clamp(2.8rem, 6vw, 5.5rem) clamp(1rem, 4vw, 3rem);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .82fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  min-height: auto;
  padding-top: clamp(4rem, 8vw, 6.5rem);
}
.hero-copy { max-width: 760px; }

.section-label { margin: 0 0 1rem; color: var(--gold); font-size: .75rem; font-weight: 760; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.05; letter-spacing: -.045em; text-wrap: balance; }
h1, h2 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; }
h1 { margin: .45rem 0 1.2rem; font-size: clamp(3.6rem, 7.2vw, 6.8rem); max-width: 10.5ch; }
h2 { margin: .35rem 0 1.2rem; font-size: clamp(2.25rem, 5vw, 5.6rem); }
h3 { margin: 0 0 .65rem; font-size: 1.15rem; letter-spacing: -.02em; }
p { margin: 0 0 1rem; }
.intro { max-width: 720px; font-size: clamp(1.15rem, 2vw, 1.4rem); color: var(--light); }
.fine-print { color: var(--muted); font-size: .85rem; }

.action-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-top: 1.7rem; }
.primary-button, .secondary-button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: .85rem 1.25rem; border-radius: 999px;
  text-decoration: none; font-weight: 800; transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}
.primary-button { background: var(--gold); color: var(--ink); }
.secondary-button { border: 1px solid rgba(239,240,244,.35); background: transparent; color: var(--light); }
.primary-button:hover, .secondary-button:hover { transform: translateY(-1px); }

.product-card {
  justify-self: end;
  width: min(100%, 460px);
  margin-top: clamp(1rem, 4vw, 3rem);
  overflow: hidden; border: 1px solid var(--line); border-radius: calc(var(--radius) + 8px);
  background: var(--blue-deep); box-shadow: 0 24px 80px rgba(0,0,0,.22);
}
.product-card img { display: block; width: 100%; height: auto; }
.product-card-copy { padding: 1.25rem; }

.band {
  display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(1.5rem, 5vw, 4rem);
  max-width: none; padding-left: max(1rem, calc((100vw - 1220px) / 2 + 3rem)); padding-right: max(1rem, calc((100vw - 1220px) / 2 + 3rem));
  background: var(--blue-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.band h2 { font-size: clamp(2rem, 4vw, 4.5rem); }
.band p:not(.section-label) { color: var(--muted); font-size: 1.05rem; }

.product-section {
  display: grid; grid-template-columns: minmax(0, .8fr) minmax(320px, .7fr); gap: clamp(1.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
}
.section-heading { max-width: 720px; }
.section-heading > p:not(.section-label) { color: var(--muted); font-size: 1.1rem; }
.principle { grid-column: 1 / -1; max-width: 820px; color: var(--muted); font-size: 1.1rem; }
.principle strong { color: var(--light); font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.35rem, 3vw, 2.1rem); font-weight: 500; line-height: 1.2; }

.demo-panel { align-self: start; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--blue-deep); }
.demo-header { display: flex; justify-content: space-between; gap: 1rem; margin: 0 0 .8rem; color: var(--muted); font-size: .85rem; }
.demo-header strong { color: var(--cream); font-variant-numeric: tabular-nums; }
.demo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
.demo-face {
  position: relative; aspect-ratio: 1; min-height: 44px; border: 1px solid rgba(239,240,244,.16);
  border-radius: 14px; background: var(--blue-primary); cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, opacity 120ms ease;
}
.demo-face:hover { transform: translateY(-1px); }
.demo-face::before, .demo-face::after { content: ""; position: absolute; top: 31%; width: 7px; height: 7px; border-radius: 999px; background: var(--light); }
.demo-face::before { left: 32%; }
.demo-face::after { right: 32%; }
.demo-mouth { position: absolute; left: 28%; right: 28%; bottom: 27%; height: 24%; border-radius: 999px; border-bottom: 3px solid var(--gold); }
.demo-face[data-expression="negative"] .demo-mouth { bottom: 18%; transform: rotate(180deg); border-bottom-color: rgba(239,240,244,.65); }
.demo-face.is-found { border-color: var(--gold); }
.demo-face.is-muted { opacity: .68; }
.demo-message { min-height: 1.5em; margin: .9rem 0 0; color: var(--muted); font-size: .85rem; }

.cards-section, .audiences, .licensing, .research, .responsible, .enquire { border-bottom: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 2rem; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cards article, .tiers article, .audience-list > div {
  padding: clamp(1.1rem, 3vw, 1.7rem); background: rgba(23, 38, 71, .52);
}
.cards p, .tiers p, .audience-list p, .research-copy p, .responsible p { color: var(--muted); }

.audience-list { display: grid; gap: 1px; margin-top: 2rem; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.audience-list > div { display: grid; grid-template-columns: minmax(200px, .55fr) 1fr; gap: 1.5rem; }

.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.tiers article { border: 1px solid var(--line); border-radius: var(--radius); }
.tiers .featured { background: var(--gold); color: var(--ink); }
.tiers .featured p { color: rgba(23,38,71,.82); }
.tier-label { margin-bottom: .5rem; color: var(--cream); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.featured .tier-label { color: var(--blue-secondary); }

.research, .responsible { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(1.5rem, 5vw, 4rem); }
.research-copy { max-width: 760px; }
.text-links { display: flex; flex-wrap: wrap; gap: .75rem 1.25rem; align-items: center; margin-top: 1.25rem; }

.enquire-card {
  max-width: 900px; padding: clamp(1.5rem, 5vw, 3rem);
  border: 1px solid var(--line); border-radius: calc(var(--radius) + 8px); background: var(--blue-deep);
}
.enquire-card h2 { max-width: 11ch; }

.site-footer {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: clamp(1rem, 4vw, 3rem);
  align-items: start; background: var(--blue-deep); max-width: none;
  padding-left: max(1rem, calc((100vw - 1220px) / 2 + 3rem)); padding-right: max(1rem, calc((100vw - 1220px) / 2 + 3rem));
}
.site-footer p { margin: 0; color: var(--muted); font-size: .9rem; }
.footer-links { display: grid; justify-items: end; gap: .45rem; font-size: .9rem; }

@media (max-width: 860px) {
  .site-header { position: static; align-items: flex-start; }
  nav a:not(.nav-cta) { display: none; }
  .hero, .band, .product-section, .research, .responsible, .site-footer { grid-template-columns: 1fr; }
  .hero { min-height: 0; padding-top: 3rem; }
  .product-card { justify-self: stretch; width: 100%; margin-top: 0; }
  .footer-links { justify-items: start; }
  h1 { font-size: clamp(3.8rem, 17vw, 6rem); }
  .cards, .tiers { grid-template-columns: 1fr; }
  .audience-list > div { grid-template-columns: 1fr; gap: .4rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}