:root {
  --paper: #f2efe8;
  --ink: #161b1d;
  --muted: #656a67;
  --line: #c9c5bb;
  --accent: #0d6d73;
  --accent-dark: #084c50;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(22px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -.02em;
}
.mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  font-size: 12px;
  letter-spacing: .08em;
}
.contact-link {
  color: var(--muted);
  font-size: 14px;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
main { padding: 0 clamp(22px, 4vw, 64px); }
.hero {
  min-height: min(720px, 78vh);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--line);
}
.eyebrow {
  margin: 0 0 24px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .14em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 1050px;
  margin-bottom: 34px;
  font-size: clamp(58px, 9vw, 132px);
  line-height: .88;
  letter-spacing: -.065em;
  font-weight: 670;
}
.lede {
  max-width: 770px;
  margin: 0;
  color: #33393a;
  font-size: clamp(19px, 2vw, 27px);
  line-height: 1.45;
  letter-spacing: -.02em;
}
.work, .principles { padding: 96px 0; border-bottom: 1px solid var(--line); }
.section-heading {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 2fr;
  gap: 32px;
  margin-bottom: 60px;
}
.section-heading .eyebrow { margin: 5px 0 0; }
h2 {
  margin-bottom: 0;
  font-size: clamp(38px, 5.5vw, 76px);
  line-height: .98;
  letter-spacing: -.05em;
  font-weight: 620;
}
.product {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) 2fr;
  gap: 32px;
  padding: 34px 0 40px;
  border-top: 1px solid var(--line);
}
.product-number {
  color: var(--muted);
  font: 500 13px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.product-topline {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
h3 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -.04em;
  font-weight: 640;
}
.platform {
  flex: 0 0 auto;
  padding: 7px 10px 6px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.product-copy > p {
  max-width: 760px;
  color: #383e3e;
  font-size: 18px;
  line-height: 1.6;
}
.product-copy .status {
  margin: 24px 0 0;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
}
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(30px, 5vw, 80px);
  margin-left: 33.333%;
}
.principle-grid p {
  color: #4a504f;
  font-size: 16px;
  line-height: 1.6;
}
.principle-grid strong { color: var(--ink); }
.closing {
  padding: clamp(100px, 14vw, 190px) 0;
}
.closing h2 {
  max-width: 980px;
  margin-bottom: 44px;
}
.email-cta {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  color: var(--accent-dark);
  font-size: clamp(20px, 2.5vw, 32px);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 5px;
}
footer {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px clamp(22px, 4vw, 64px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 760px) {
  .site-header { min-height: 72px; }
  .contact-link { display: none; }
  .hero { min-height: 70vh; padding: 64px 0; }
  h1 { font-size: clamp(54px, 17vw, 84px); }
  .section-heading, .product { grid-template-columns: 1fr; gap: 18px; }
  .section-heading { margin-bottom: 44px; }
  .product-number { margin-bottom: 3px; }
  .product-topline { align-items: flex-start; }
  .principle-grid { grid-template-columns: 1fr; margin-left: 0; gap: 12px; }
  .principle-grid p { padding-top: 22px; border-top: 1px solid var(--line); }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* Narrow-screen hardening */
html, body { max-width: 100%; overflow-x: hidden; }
main, .site-header, footer { max-width: 100vw; }
h1, h2, h3, .lede, .product-copy { max-width: 100%; overflow-wrap: break-word; }

@media (max-width: 520px) {
  main { padding-left: 22px; padding-right: 22px; }
  .hero { min-height: 0; padding: 72px 0 78px; }
  h1 { font-size: clamp(50px, 14.5vw, 62px); line-height: .93; letter-spacing: -.055em; }
  .lede { font-size: 18px; line-height: 1.52; }
  h2 { font-size: 42px; line-height: 1; }
  h3 { font-size: 34px; }
  .work, .principles { padding: 76px 0; }
  .product-topline { flex-direction: column; gap: 12px; }
  .product-copy > p { font-size: 17px; }
  .closing { padding: 96px 0; }
}