:root {
  color-scheme: light;
  --ink: #0f172a;
  --ink-soft: #334155;
  --paper: #f7f8f4;
  --surface: #ffffff;
  --ocean: #1e3a5f;
  --ocean-light: #dce7f0;
  --sea-glass: #dcebe6;
  --accent: #a16207;
  --line: #cbd5e1;
  --line-soft: #e2e8f0;
  --focus: #1d4ed8;
  --radius-sm: 0.65rem;
  --radius-md: 1.15rem;
  --radius-lg: 2rem;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  --shell: 72rem;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --space-8: 7rem;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--paper);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 0.08em; text-underline-offset: 0.2em; }
a:hover { text-decoration-color: var(--accent); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 0.2rem;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  transform: translateY(-200%);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: white;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.shell {
  width: min(calc(100% - 2rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(203, 213, 225, 0.78);
  background: rgba(247, 248, 244, 0.94);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  color: var(--ink);
  font-size: 1.45rem;
  font-weight: 760;
  letter-spacing: -0.055em;
  text-decoration: none;
}

.wordmark-labs {
  color: var(--accent);
  font-size: 0.69rem;
  font-weight: 760;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.desktop-nav, .footer-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.6vw, 2rem);
}

.desktop-nav a, .footer-nav a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  color: var(--ink-soft);
  font-weight: 650;
  text-decoration: none;
}

.desktop-nav a:hover, .footer-nav a:hover { color: var(--ink); }
.mobile-nav { display: none; }

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  padding: clamp(5rem, 10vw, 9rem) 0 var(--space-8);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  align-items: end;
  gap: clamp(3rem, 7vw, 7rem);
}

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }

.hero h1, .page-hero h1 {
  max-width: 12ch;
  margin-bottom: var(--space-4);
  font-size: clamp(3.4rem, 8.5vw, 7.6rem);
  font-weight: 650;
  letter-spacing: -0.072em;
  line-height: 0.96;
}

.hero h1 span { display: block; }

.hero-lede, .page-lede {
  max-width: 40rem;
  margin-bottom: var(--space-5);
  color: var(--ink-soft);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.button-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.button {
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: white;
  font-weight: 740;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}
.button:hover { background: var(--ocean); border-color: var(--ocean); }
.button-secondary { background: transparent; color: var(--ink); }
.button-secondary:hover { background: var(--ocean-light); color: var(--ink); }

.lab-window {
  min-height: 27rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 0.7rem;
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  transform: rotate(1.4deg);
}

.lab-cell {
  min-height: 10rem;
  display: flex;
  align-items: flex-end;
  padding: 1.25rem;
  border-radius: 1.4rem;
  background: var(--ocean-light);
  color: var(--ocean);
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  font-weight: 750;
  letter-spacing: -0.035em;
}
.lab-cell:nth-child(2) { background: var(--sea-glass); }
.lab-cell:nth-child(3) { background: var(--ink); color: white; }
.lab-cell:nth-child(4) { background: #efe3cf; color: #713f12; }

.section { padding: var(--space-8) 0; }
.section-rule { border-top: 1px solid var(--line); }
.section-heading {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
.section-heading h2 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4rem);
  letter-spacing: -0.055em;
  line-height: 1.04;
}
.section-heading p {
  max-width: 39rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.15rem;
}

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
.product-card {
  min-height: 35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.product-card:hover { border-color: var(--ocean); box-shadow: var(--shadow); }
.product-meta { display: flex; justify-content: space-between; gap: 1rem; color: var(--ink-soft); font-size: 0.86rem; font-weight: 690; }
.product-card h3 { margin: 0 0 0.65rem; font-size: clamp(2rem, 4vw, 3.3rem); letter-spacing: -0.05em; line-height: 1; }
.product-card p { max-width: 31rem; margin-bottom: 0; color: var(--ink-soft); }
.product-link { margin-top: var(--space-5); color: var(--ocean); font-weight: 780; }

.product-art {
  min-height: 18rem;
  display: grid;
  place-items: center;
  margin: var(--space-5) 0;
  border-radius: 1.45rem;
  background: var(--ink);
}
.frame-pair-art { position: relative; overflow: hidden; }
.frame-pair-art::before, .frame-pair-art::after {
  content: "";
  position: absolute;
  width: 34%;
  aspect-ratio: 3 / 4;
  border: 2px solid #d9ae54;
  border-radius: 1.35rem;
  background: linear-gradient(145deg, #1f2937, #09090b);
}
.frame-pair-art::before { transform: translate(-34%, -4%) rotate(-7deg); }
.frame-pair-art::after { transform: translate(34%, 4%) rotate(7deg); }
.water-art { position: relative; overflow: hidden; background: linear-gradient(145deg, #dff5f6, #a8dfe5); }
.water-art::before {
  content: "";
  width: 8rem;
  height: 11rem;
  border-radius: 55% 45% 62% 38% / 62% 38% 62% 38%;
  background: #087f8c;
  transform: rotate(38deg);
  box-shadow: 4rem -2rem 0 rgba(30, 58, 95, 0.12);
}

.principles-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }
.principle-card { padding: var(--space-4); border-top: 3px solid var(--ocean); background: var(--surface); }
.principle-number { display: block; margin-bottom: var(--space-5); color: var(--accent); font-size: 0.78rem; font-weight: 800; }
.principle-card h3 { margin-bottom: 0.65rem; font-size: 1.3rem; }
.principle-card p { margin-bottom: 0; color: var(--ink-soft); }

.statement {
  padding: clamp(2rem, 6vw, 5rem);
  border-radius: var(--radius-lg);
  background: var(--ocean);
  color: white;
}
.statement p { max-width: 24ch; margin: 0; font-size: clamp(2rem, 5vw, 4.3rem); font-weight: 630; letter-spacing: -0.055em; line-height: 1.08; }

.page-hero { padding: clamp(4rem, 9vw, 8rem) 0 var(--space-7); border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 15ch; font-size: clamp(3rem, 7vw, 6.2rem); }
.breadcrumb { margin-bottom: var(--space-5); color: var(--ink-soft); font-size: 0.9rem; font-weight: 680; }
.breadcrumb a { color: var(--ocean); }

.content-grid { display: grid; grid-template-columns: 0.55fr 1.45fr; gap: clamp(2rem, 8vw, 7rem); }
.content-label { color: var(--accent); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.prose { max-width: 48rem; }
.prose h2 { margin: 3rem 0 0.7rem; font-size: clamp(1.65rem, 3vw, 2.3rem); letter-spacing: -0.035em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 2rem 0 0.5rem; font-size: 1.2rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose ul { padding-left: 1.3rem; }
.prose .meta { color: var(--ink-soft); font-size: 0.9rem; }
.prose .callout { margin: 2rem 0; padding: 1.25rem 1.4rem; border-left: 4px solid var(--accent); background: #f2eadc; color: #422006; }

.fact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); margin: var(--space-5) 0; }
.fact { padding: 1.2rem; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); }
.fact strong { display: block; margin-bottom: 0.35rem; }
.fact span { color: var(--ink-soft); }

.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
.support-card { padding: var(--space-5); border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.support-card h2 { margin-bottom: 0.75rem; font-size: 2rem; letter-spacing: -0.045em; }
.support-card p { color: var(--ink-soft); }

.error-page { min-height: 62vh; display: grid; place-items: center; padding: var(--space-7) 0; text-align: center; }
.error-code { margin-bottom: 0.5rem; color: var(--accent); font-size: 0.85rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.error-page h1 { margin-bottom: 1rem; font-size: clamp(3rem, 8vw, 6rem); letter-spacing: -0.065em; }
.error-page p { max-width: 32rem; margin: 0 auto var(--space-5); color: var(--ink-soft); font-size: 1.15rem; }

.site-footer { margin-top: var(--space-8); padding: var(--space-7) 0 var(--space-4); border-top: 1px solid var(--line); background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: 1.1fr 0.8fr 0.8fr; gap: var(--space-6); }
.wordmark-footer { margin-bottom: var(--space-2); }
.footer-note, .footer-contact p { color: var(--ink-soft); }
.footer-nav { align-items: flex-start; flex-direction: column; gap: 0.2rem; }
.footer-contact a { color: var(--ocean); font-weight: 740; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--line-soft); color: var(--ink-soft); font-size: 0.85rem; }
.footer-bottom p { margin: 0; }

@media (max-width: 54rem) {
  .desktop-nav { display: none; }
  .mobile-nav { position: relative; display: block; }
  .mobile-nav summary {
    min-width: 4rem;
    min-height: 2.75rem;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    cursor: pointer;
    font-weight: 720;
    list-style: none;
  }
  .mobile-nav summary::-webkit-details-marker { display: none; }
  .mobile-nav nav {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    width: min(18rem, calc(100vw - 2rem));
    display: grid;
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow);
  }
  .mobile-nav nav a { min-height: 3rem; display: flex; align-items: center; padding: 0 0.8rem; border-radius: 0.6rem; font-weight: 700; text-decoration: none; }
  .mobile-nav nav a:hover { background: var(--ocean-light); }
  .hero-grid, .section-heading, .content-grid { grid-template-columns: 1fr; }
  .lab-window { min-height: 22rem; transform: none; }
  .principles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 40rem) {
  .hero { padding-top: var(--space-7); }
  .product-grid, .support-grid, .fact-grid, .principles-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 30rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-contact { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}