:root {
  --paper: #f5f1e8;
  --paper-deep: #ebe4d7;
  --surface: #fffdf8;
  --ink: #17262c;
  --ink-soft: #53656a;
  --line: #d8d0c2;
  --blue: #315f73;
  --blue-dark: #214755;
  --teal: #187a73;
  --clay: #ad624c;
  --gold: #c49749;
  --shadow: 0 22px 70px rgba(30, 47, 52, 0.1);
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 8%, rgba(49, 95, 115, 0.08), transparent 24rem),
    var(--paper);
  color: var(--ink);
  font-family: "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  transform: translateY(-150%);
  border-radius: 8px;
  background: var(--ink);
  color: white;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 0 clamp(22px, 5vw, 76px);
  border-bottom: 1px solid rgba(216, 208, 194, 0.8);
  background: rgba(245, 241, 232, 0.92);
  backdrop-filter: blur(16px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.wordmark > span:last-child { display: grid; }

.wordmark strong {
  font-size: 0.92rem;
  letter-spacing: -0.015em;
}

.wordmark small {
  margin-top: 1px;
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wordmark-symbol {
  position: relative;
  width: 38px;
  height: 38px;
}

.wordmark-symbol i {
  position: absolute;
  display: block;
  width: 23px;
  height: 23px;
  border: 2px solid var(--blue);
  border-radius: 50%;
}

.wordmark-symbol i:nth-child(1) { top: 0; left: 7px; }
.wordmark-symbol i:nth-child(2) { bottom: 0; left: 0; border-color: var(--teal); }
.wordmark-symbol i:nth-child(3) { right: 0; bottom: 0; border-color: var(--clay); }

nav { display: flex; align-items: center; gap: clamp(16px, 2.5vw, 34px); }

nav a {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 750;
  text-decoration: none;
}

nav a:hover, nav a:focus-visible { color: var(--ink); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, 0.92fr);
  align-items: center;
  gap: clamp(38px, 7vw, 110px);
  width: min(1380px, calc(100% - 44px));
  min-height: calc(100vh - 78px);
  margin: 0 auto;
  padding: clamp(70px, 10vh, 130px) clamp(0px, 3vw, 44px);
}

.eyebrow {
  margin: 0 0 17px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(3.15rem, 6.6vw, 6.6rem);
  line-height: 0.98;
}

.hero-lead {
  max-width: 720px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 50px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: var(--blue-dark); }
.button-secondary { border-color: #b9b1a3; background: rgba(255, 253, 248, 0.55); }
.button-secondary:hover { border-color: var(--ink); background: var(--surface); }

.measure-map {
  position: relative;
  aspect-ratio: 1;
  width: min(100%, 590px);
  margin: 0 auto;
  border: 1px solid rgba(49, 95, 115, 0.16);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255,255,255,0.9) 0 2px, transparent 2.5px) 0 0 / 24px 24px,
    rgba(255, 253, 248, 0.7);
  box-shadow: var(--shadow);
}

.orbit {
  position: absolute;
  inset: 17%;
  border: 1px solid rgba(49, 95, 115, 0.25);
  border-radius: 50%;
}

.orbit-two { inset: 33%; border-style: dashed; }

.map-center {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 34%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--ink);
  color: white;
  text-align: center;
  box-shadow: 0 18px 40px rgba(23, 38, 44, 0.22);
}

.map-center span {
  align-self: end;
  color: #a8d6d1;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.map-center strong {
  align-self: start;
  margin-top: 6px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1rem, 2vw, 1.55rem);
  font-weight: 500;
  line-height: 1.1;
}

.map-node {
  position: absolute;
  display: grid;
  gap: 3px;
  min-width: 150px;
  padding: 13px 15px;
  border: 1px solid rgba(23, 38, 44, 0.12);
  border-radius: 13px;
  background: var(--surface);
  box-shadow: 0 12px 28px rgba(30, 47, 52, 0.1);
}

.map-node span {
  color: var(--ink-soft);
  font-size: 0.6rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.map-node strong { font-size: 0.82rem; }
.node-ops { top: 10%; left: 50%; transform: translateX(-50%); border-top: 3px solid var(--teal); }
.node-dev { right: 3%; bottom: 17%; border-top: 3px solid var(--blue); }
.node-ai { bottom: 17%; left: 3%; border-top: 3px solid var(--clay); }

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1280px, calc(100% - 44px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principles article {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
  min-height: 122px;
  padding: 22px clamp(18px, 3vw, 40px);
  border-right: 1px solid var(--line);
}

.principles article:last-child { border: 0; }
.principles article > span { color: var(--clay); font-family: Georgia, serif; font-size: 1.65rem; }
.principles article div { display: grid; gap: 3px; }
.principles strong { font-size: 0.9rem; }
.principles small { color: var(--ink-soft); font-size: 0.76rem; line-height: 1.45; }

.section {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
  padding: clamp(90px, 12vw, 160px) 0;
}

.section-heading h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.03;
}

.research-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.72fr);
  gap: clamp(44px, 9vw, 130px);
}

.research-copy { padding-top: 34px; }
.research-copy p { margin: 0; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.8; }
.research-copy p + p { margin-top: 22px; }

.study {
  width: min(1380px, calc(100% - 44px));
  padding: clamp(70px, 9vw, 120px) clamp(24px, 5vw, 70px);
  border: 1px solid #c9c1b4;
  border-radius: 34px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.study-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.58fr);
  align-items: end;
  gap: 50px;
}

.study-header > p {
  margin: 0 0 4px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.dimension-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 58px;
}

.dimension-card {
  min-height: 310px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #faf7f0;
}

.dimension-card .card-index {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  border-radius: 50%;
  color: white;
  font-family: Georgia, serif;
}

.ops-card .card-index { background: var(--teal); }
.dev-card .card-index { background: var(--blue); }
.ai-card .card-index { background: var(--clay); }
.dimension-card h3 { margin: 54px 0 13px; font-size: 1.75rem; }
.dimension-card p { margin: 0; color: var(--ink-soft); line-height: 1.65; }
.dimension-card > span { display: block; margin-top: 24px; color: var(--ink); font-size: 0.72rem; font-weight: 850; letter-spacing: 0.08em; text-transform: uppercase; }

.method-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 42px;
  border-top: 1px solid var(--line);
}

.method-strip > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 13px;
  padding: 28px 22px 0;
}

.method-strip span {
  grid-row: 1 / 3;
  color: var(--gold);
  font-family: Georgia, serif;
  font-size: 1.5rem;
}

.method-strip strong { font-size: 0.9rem; }
.method-strip small { color: var(--ink-soft); line-height: 1.45; }

.participant-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 60px;
  margin-top: clamp(90px, 12vw, 160px);
  padding: clamp(70px, 10vw, 120px) max(22px, calc((100vw - 1180px) / 2));
  background: var(--blue-dark);
  color: white;
}

.participant-section h2, .contact-section h2 { margin: 0; font-size: clamp(2.5rem, 5vw, 4.7rem); line-height: 1; }
.participant-section > div > p:not(.eyebrow) { max-width: 760px; margin: 24px 0 0; color: #d7e3e7; line-height: 1.75; }
.participant-section .eyebrow { color: #95d8d2; }
.participant-section .participant-note { padding-left: 15px; border-left: 2px solid #95d8d2; font-size: 0.86rem; }
.button-light { min-width: 250px; background: white; color: var(--ink); }
.button-light:hover { background: var(--paper); }

.collaboration { padding-bottom: 100px; }
.name-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 54px; }
.name-grid article { display: grid; min-height: 190px; padding: 25px; border-top: 1px solid var(--ink); background: rgba(255,255,255,0.27); }
.name-grid span { color: var(--clay); font-family: Georgia, serif; font-size: 2.4rem; }
.name-grid strong { align-self: end; font-family: Georgia, serif; font-size: 1.7rem; font-weight: 500; }
.name-grid small { color: var(--ink-soft); }
.affiliation-note { max-width: 660px; margin: 30px 0 0; color: var(--ink-soft); }

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.72fr);
  align-items: center;
  gap: 60px;
  padding: clamp(75px, 10vw, 120px) max(22px, calc((100vw - 1180px) / 2));
  background: var(--paper-deep);
}

.contact-card { padding: 28px; border: 1px solid #cfc5b4; border-radius: 18px; background: var(--surface); }
.contact-card p { margin: 0; color: var(--ink-soft); }
.contact-card a { display: inline-block; margin-top: 14px; color: var(--blue-dark); font-family: Georgia, serif; font-size: 1.45rem; font-weight: 600; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.contact-card small { display: block; margin-top: 20px; color: var(--ink-soft); }

footer {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.7fr);
  gap: 30px;
  padding: 45px max(22px, calc((100vw - 1180px) / 2));
  background: var(--ink);
  color: white;
}

footer div { display: grid; gap: 4px; }
footer span { color: #a9bec4; font-size: 0.78rem; }
footer p { margin: 0; color: #a9bec4; font-size: 0.72rem; line-height: 1.6; }

@media (max-width: 980px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .measure-map { width: min(86vw, 560px); }
  .research-intro, .study-header, .contact-section { grid-template-columns: 1fr; }
  .study-header > p { max-width: 720px; }
  .dimension-grid { grid-template-columns: 1fr; }
  .dimension-card { min-height: 0; }
  .dimension-card h3 { margin-top: 35px; }
  .participant-section { grid-template-columns: 1fr; }
  .button-light { justify-self: start; }
}

@media (max-width: 700px) {
  .site-header { min-height: 70px; padding: 0 18px; }
  .wordmark strong { font-size: 0.82rem; }
  .wordmark small { font-size: 0.6rem; }
  .hero { width: calc(100% - 34px); padding-top: 60px; }
  h1 { font-size: clamp(2.75rem, 13vw, 4.6rem); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .measure-map { width: 100%; }
  .map-node { min-width: 118px; padding: 10px; }
  .map-node strong { font-size: 0.68rem; }
  .principles { grid-template-columns: 1fr; width: calc(100% - 34px); }
  .principles article { min-height: 100px; border-right: 0; border-bottom: 1px solid var(--line); }
  .section, .study { width: calc(100% - 34px); }
  .study { padding: 60px 18px; border-radius: 24px; }
  .method-strip { grid-template-columns: 1fr; }
  .method-strip > div { padding: 21px 0; border-bottom: 1px solid var(--line); }
  .method-strip > div:last-child { border-bottom: 0; }
  .participant-section { padding-left: 18px; padding-right: 18px; }
  .button-light { min-width: 0; }
  .name-grid { grid-template-columns: 1fr; }
  .name-grid article { min-height: 150px; }
  .contact-section { padding-left: 18px; padding-right: 18px; }
  .contact-card { min-width: 0; padding: 22px; }
  .contact-card a { overflow-wrap: anywhere; }
  footer { grid-template-columns: 1fr; padding: 38px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}