@font-face {
  font-family: "Work Sans";
  src: url("../assets/fonts/work-sans-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Work Sans";
  src: url("../assets/fonts/work-sans-medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Work Sans";
  src: url("../assets/fonts/work-sans-semibold.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  --brown: #3a190c;
  --paper: #f1efe1;
  --ivory: #fdf8ed;
  --forest: #25481f;
  --leaf: #99b533;
  --signal: #edf815;
  --sand: #ebd070;
  --ink: #171a16;
  --muted: #66695f;
  --line: rgba(37, 72, 31, 0.2);
  --shell: min(100% - 48px, 1280px);
  --shadow: 0 22px 60px rgba(35, 33, 23, 0.14);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: "Work Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

img,
svg,
canvas,
iframe {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input,
textarea,
select {
  font: inherit;
}

h1,
h2,
h3,
p,
figure,
blockquote {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.08;
}

h2 {
  font-size: clamp(2.4rem, 5vw, 5.25rem);
  letter-spacing: -0.052em;
  font-weight: 500;
}

h3 {
  letter-spacing: -0.025em;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section {
  position: relative;
  padding: clamp(88px, 11vw, 160px) 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  transform: translateY(-150%);
  background: var(--signal);
  color: var(--ink);
  font-weight: 600;
}

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

.grain {
  isolation: isolate;
}

.grain::after {
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.14;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.86' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
}

.site-header {
  position: sticky;
  z-index: 90;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(253, 248, 237, 0.96);
  transition: border-color 220ms ease, box-shadow 220ms ease;
  backdrop-filter: blur(14px);
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 8px 28px rgba(37, 72, 31, 0.07);
}

.site-header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--forest);
  text-decoration: none;
}

.brand__logo {
  width: 132px;
  height: auto;
}

.brand__division {
  position: relative;
  padding-left: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.brand__division::before {
  position: absolute;
  top: -4px;
  bottom: -4px;
  left: 0;
  width: 1px;
  content: "";
  background: currentColor;
  opacity: 0.3;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
  font-size: 0.79rem;
  font-weight: 500;
}

.primary-nav a {
  position: relative;
  text-decoration: none;
}

.primary-nav a:not(.primary-nav__portal)::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  background: var(--forest);
  transition: transform 260ms var(--ease);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.primary-nav__portal {
  padding: 10px 15px;
  border: 1px solid var(--forest);
  color: var(--forest);
  transition: color 180ms ease, background 180ms ease;
}

.primary-nav__portal:hover,
.primary-nav__portal:focus-visible {
  background: var(--forest);
  color: var(--ivory);
}

.nav-toggle {
  display: none;
  padding: 10px 0 10px 10px;
  border: 0;
  background: none;
  color: var(--forest);
  cursor: pointer;
}

.nav-toggle__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-toggle__lines {
  display: grid;
  width: 24px;
  gap: 5px;
}

.nav-toggle__lines i {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 220ms ease;
}

.hero {
  position: relative;
  min-height: min(850px, calc(100svh - 76px));
  display: flex;
  overflow: hidden;
  background: var(--forest);
  color: var(--ivory);
}

.hero__image,
.hero__shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__image {
  object-fit: cover;
  object-position: 50% 36%;
}

.hero__shade {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(12, 31, 14, 0.91) 0%, rgba(12, 31, 14, 0.67) 46%, rgba(12, 31, 14, 0.18) 78%),
    linear-gradient(0deg, rgba(9, 27, 11, 0.65), transparent 48%);
}

.hero__inner {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: end;
  gap: clamp(60px, 9vw, 140px);
  padding: clamp(100px, 14vh, 160px) 0 110px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  color: var(--forest);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 30px;
  height: 1px;
  flex: 0 0 auto;
  content: "";
  background: currentColor;
}

.eyebrow--light {
  color: var(--sand);
}

.hero h1 {
  max-width: 950px;
  margin-bottom: 30px;
  font-family: "Work Sans", Arial, sans-serif;
  font-size: clamp(4rem, 7.8vw, 8.6rem);
  font-weight: 600;
  line-height: 0.93;
  letter-spacing: -0.065em;
}

.hero__lead {
  max-width: 700px;
  margin-bottom: 40px;
  color: rgba(253, 248, 237, 0.87);
  font-size: clamp(1.05rem, 1.55vw, 1.35rem);
  line-height: 1.55;
}

.hero__actions,
.collaboration__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 25px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border: 1px solid transparent;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform 200ms var(--ease), background 200ms ease, color 200ms ease;
}

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

.button--signal {
  background: var(--signal);
  color: var(--ink);
}

.button--signal:hover,
.button--signal:focus-visible {
  background: var(--ivory);
}

.button--outline {
  border-color: var(--forest);
  color: var(--forest);
}

.button--outline:hover,
.button--outline:focus-visible {
  background: var(--forest);
  color: var(--ivory);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--forest);
  font-size: 0.83rem;
  font-weight: 600;
  text-decoration: none;
}

.text-link span {
  transition: transform 200ms var(--ease);
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translateX(4px);
}

.text-link--light {
  color: var(--ivory);
}

.hero__signal {
  --signal-rotate-x: 0deg;
  --signal-rotate-y: 0deg;
  align-self: end;
  padding: 21px;
  border: 1px solid rgba(253, 248, 237, 0.38);
  background: rgba(9, 28, 12, 0.45);
  cursor: crosshair;
  transform: perspective(900px) rotateX(var(--signal-rotate-x)) rotateY(var(--signal-rotate-y));
  transform-style: preserve-3d;
  transition: transform 320ms var(--ease), border-color 220ms ease, background 220ms ease;
  will-change: transform;
  backdrop-filter: blur(8px);
}

.hero__signal.is-interacting,
.hero__signal:focus-visible {
  border-color: rgba(237, 248, 21, 0.68);
  background: rgba(9, 28, 12, 0.58);
}

.hero__signal.is-pulsing {
  transform: perspective(900px) rotateX(var(--signal-rotate-x)) rotateY(var(--signal-rotate-y)) scale(0.992);
}

.signal-card__head,
.signal-visual__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--sand);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-card__index {
  color: rgba(253, 248, 237, 0.5);
}

.hero__signal canvas {
  width: 100%;
  height: 116px;
  margin: 18px 0 10px;
}

.hero__signal p {
  margin-bottom: 0;
  color: rgba(253, 248, 237, 0.72);
  font-size: 0.79rem;
  line-height: 1.55;
}

.hero__scroll {
  position: absolute;
  z-index: 4;
  right: 30px;
  bottom: 47px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(253, 248, 237, 0.75);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  transform: rotate(90deg) translateY(-100%);
  transform-origin: right top;
}

.hero__scroll span {
  position: relative;
  width: 42px;
  height: 1px;
  overflow: hidden;
  background: rgba(253, 248, 237, 0.35);
}

.hero__scroll span::after {
  position: absolute;
  inset: 0;
  content: "";
  background: var(--signal);
  animation: scroll-line 2.4s ease-in-out infinite;
}

@keyframes scroll-line {
  0% { transform: translateX(-100%); }
  50%, 100% { transform: translateX(100%); }
}

.section--intro {
  overflow: hidden;
  background: var(--paper);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.7fr);
  gap: clamp(70px, 11vw, 165px);
}

.display {
  font-family: "Work Sans", Arial, sans-serif;
  font-weight: 600;
  line-height: 1.04;
}

.display em {
  color: var(--forest);
  font-style: italic;
}

.intro-copy {
  padding-top: 56px;
}

.lede {
  font-size: clamp(1.12rem, 1.6vw, 1.42rem);
  line-height: 1.55;
}

.intro-copy > p:not(.lede) {
  color: var(--muted);
}

.intro-copy .text-link {
  margin-top: 20px;
}

.section--dark {
  overflow: hidden;
  background: var(--forest);
  color: var(--ivory);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: end;
  gap: clamp(50px, 9vw, 130px);
  margin-bottom: clamp(52px, 7vw, 96px);
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading > p {
  max-width: 500px;
  margin-bottom: 8px;
  color: var(--muted);
}

.section-heading--light > p {
  color: rgba(253, 248, 237, 0.7);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(253, 248, 237, 0.3);
  border-bottom: 1px solid rgba(253, 248, 237, 0.3);
}

.research-card {
  min-height: 515px;
  display: flex;
  flex-direction: column;
  padding: 28px clamp(24px, 3vw, 44px) 30px;
  border-left: 1px solid rgba(253, 248, 237, 0.22);
  transition: background 260ms ease;
}

.research-card:first-child {
  border-left: 0;
}

.research-card:hover {
  background: rgba(253, 248, 237, 0.045);
}

.research-card--signal {
  background: rgba(153, 181, 51, 0.09);
}

.research-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: auto;
  color: var(--sand);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.research-card h3 {
  max-width: 310px;
  margin: 58px 0 22px;
  font-size: clamp(1.65rem, 2.5vw, 2.45rem);
  font-weight: 500;
}

.research-card > p:not(.research-card__status) {
  min-height: 110px;
  color: rgba(253, 248, 237, 0.69);
  font-size: 0.92rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 10px 0 38px;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 5px 9px;
  border: 1px solid rgba(253, 248, 237, 0.25);
  color: rgba(253, 248, 237, 0.75);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.research-card__status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid rgba(253, 248, 237, 0.17);
  color: rgba(253, 248, 237, 0.55);
  font-size: 0.69rem;
  letter-spacing: 0.04em;
}

.research-card__status span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
}

.section--agenda {
  overflow: hidden;
  background: var(--paper);
}

.agenda-heading {
  padding-bottom: clamp(44px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.agenda-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-left: 1px solid var(--line);
}

.agenda-card {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  padding: clamp(26px, 3.2vw, 44px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(253, 248, 237, 0.42);
  transition: background 220ms ease;
}

.agenda-card:hover {
  background: var(--ivory);
}

.agenda-card--signal {
  background: rgba(153, 181, 51, 0.09);
}

.agenda-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--leaf);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.agenda-card h3 {
  max-width: 520px;
  margin: 60px 0 20px;
  color: var(--forest);
  font-size: clamp(1.65rem, 2.7vw, 2.7rem);
  font-weight: 500;
}

.agenda-card > p {
  max-width: 580px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 0.9rem;
}

.citation-list,
.research-question-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: auto 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.citation-list li,
.research-question-list li {
  padding: 5px 8px;
  border: 1px solid rgba(37, 72, 31, 0.24);
  color: var(--forest);
  font-size: 0.64rem;
  font-weight: 500;
  line-height: 1.35;
}

.citation-list li::before {
  content: "[ ";
  color: var(--leaf);
}

.citation-list li::after {
  content: " ]";
  color: var(--leaf);
}

.research-question-list li {
  border-style: dashed;
  color: var(--muted);
  text-transform: uppercase;
}

.agenda-note {
  max-width: 900px;
  margin: 42px 0 0 auto;
  padding-left: 26px;
  border-left: 3px solid var(--leaf);
  color: var(--muted);
  font-size: 0.85rem;
}

.agenda-note strong {
  color: var(--ink);
  font-weight: 600;
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.9fr) minmax(400px, 1.1fr);
  align-items: start;
  gap: clamp(55px, 9vw, 135px);
}

.image-frame {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: var(--paper);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.image-frame:hover img {
  transform: scale(1.025);
}

.image-frame figcaption {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px;
  background: linear-gradient(0deg, rgba(15, 24, 14, 0.82), transparent);
  color: var(--ivory);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.method-image {
  width: min(100%, 540px);
  height: clamp(480px, 48vw, 620px);
  justify-self: start;
}

.method-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: method;
}

.method-list li {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 25px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.method-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.method-list__number {
  color: var(--leaf);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.method-list h3 {
  margin-bottom: 11px;
  color: var(--forest);
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 500;
}

.method-list p {
  max-width: 570px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.section--signal {
  overflow: hidden;
  background: var(--paper);
}

.signal-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(450px, 1.18fr);
  align-items: center;
  gap: clamp(60px, 9vw, 145px);
}

.signal-copy .lede {
  max-width: 590px;
}

.accuracy-note {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 15px;
  margin: 35px 0;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.accuracy-note__mark {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--forest);
  border-radius: 50%;
  color: var(--forest);
  font-family: Georgia, serif;
  font-size: 0.8rem;
  font-style: italic;
  font-weight: 700;
}

.accuracy-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.accuracy-note strong {
  color: var(--ink);
  font-weight: 600;
}

.signal-visual {
  position: relative;
  padding: clamp(25px, 4vw, 52px);
  background: var(--forest);
  box-shadow: var(--shadow);
  color: var(--ivory);
}

.signal-visual::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--signal);
  box-shadow: calc(100% + 0px) 0 0 var(--signal);
}

.signal-visual__top {
  justify-content: flex-start;
  gap: 10%;
  margin-bottom: 35px;
}

.signal-visual svg {
  width: 100%;
  overflow: visible;
}

.signal-visual__grid {
  fill: none;
  stroke: rgba(253, 248, 237, 0.08);
  stroke-width: 1;
}

.signal-visual__baseline {
  fill: none;
  stroke: rgba(253, 248, 237, 0.22);
  stroke-dasharray: 5 7;
}

.signal-visual__wave {
  fill: none;
  stroke: var(--signal);
  stroke-width: 3;
  stroke-linecap: round;
  filter: drop-shadow(0 0 7px rgba(237, 248, 21, 0.26));
}

.signal-visual__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 25px;
  margin-top: 24px;
  color: rgba(253, 248, 237, 0.58);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.signal-visual__legend span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.legend-dot--raw { background: var(--signal); }
.legend-dot--sound { border: 1px solid var(--sand); }

.section--field {
  background: var(--ivory);
}

.field-story {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(330px, 0.65fr);
  align-items: end;
  gap: clamp(48px, 8vw, 115px);
}

.field-story__main {
  height: clamp(450px, 56vw, 720px);
}

.field-story__main img {
  object-position: 50% 55%;
}

.field-story__copy {
  padding-bottom: 10px;
}

.field-story blockquote {
  margin-bottom: 32px;
  color: var(--forest);
  font-family: "Work Sans", Arial, sans-serif;
  font-size: clamp(2.1rem, 3.8vw, 4.25rem);
  font-style: normal;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.field-story__copy > p {
  color: var(--muted);
}

.field-story__copy .text-link {
  margin-top: 20px;
}

.section--principles {
  overflow: hidden;
  background: var(--brown);
  color: var(--ivory);
}

.principles-layout {
  display: grid;
  grid-template-columns: minmax(330px, 0.75fr) minmax(500px, 1.25fr);
  align-items: start;
  gap: clamp(60px, 10vw, 155px);
}

.principles-layout header {
  position: sticky;
  top: 125px;
}

.principles-layout h2 {
  margin-bottom: 0;
  font-size: clamp(2.5rem, 4.5vw, 4.75rem);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgba(253, 248, 237, 0.25);
  border-left: 1px solid rgba(253, 248, 237, 0.25);
}

.principles-grid article {
  min-height: 280px;
  padding: 26px;
  border-right: 1px solid rgba(253, 248, 237, 0.25);
  border-bottom: 1px solid rgba(253, 248, 237, 0.25);
}

.principles-grid article > span {
  color: var(--sand);
  font-size: 0.7rem;
  font-weight: 600;
}

.principles-grid h3 {
  margin: 78px 0 15px;
  font-size: 1.45rem;
  font-weight: 500;
}

.principles-grid p {
  margin-bottom: 0;
  color: rgba(253, 248, 237, 0.65);
  font-size: 0.86rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 5vw, 70px);
}

.video-card__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin-bottom: 24px;
  background: var(--forest);
  box-shadow: var(--shadow);
}

.video-card__frame iframe {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 16px;
  color: var(--leaf);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-card h3 {
  margin-bottom: 14px;
  color: var(--forest);
  font-size: clamp(1.7rem, 3vw, 2.65rem);
  font-weight: 500;
}

.video-card > p {
  max-width: 610px;
  margin: 0;
  color: var(--muted);
}

.section--gallery {
  overflow: hidden;
  padding-top: 20px;
  background: var(--paper);
}

.gallery-heading {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 38px;
}

.gallery-heading .eyebrow {
  margin: 0;
}

.gallery-heading > p:last-child {
  max-width: 470px;
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.gallery-grid {
  width: min(100% - 24px, 1580px);
  display: grid;
  grid-template-columns: 0.78fr 0.78fr 1.44fr;
  align-items: stretch;
  gap: 10px;
  margin-inline: auto;
}

.gallery-item {
  position: relative;
  height: clamp(430px, 46vw, 690px);
  overflow: hidden;
  margin: 0;
  background: var(--forest);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease), filter 450ms ease;
}

.gallery-item:hover img {
  transform: scale(1.035);
  filter: saturate(0.85);
}

.gallery-item--wide img {
  object-position: 46% 50%;
}

.gallery-item figcaption {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 20px 18px;
  background: linear-gradient(0deg, rgba(12, 25, 12, 0.84), transparent);
  color: var(--ivory);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.team-card {
  min-height: 260px;
  padding: 24px 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 220ms ease;
}

.team-card:hover {
  background: var(--paper);
}

.team-card--lead {
  background: rgba(153, 181, 51, 0.07);
}

.team-card > span {
  color: var(--leaf);
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.team-card h3 {
  margin: 68px 0 12px;
  color: var(--forest);
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 500;
}

.team-card p {
  max-width: 345px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.section--data {
  overflow: hidden;
  background: var(--forest);
  color: var(--ivory);
}

.data-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(55px, 8vw, 120px);
}

.data-layout h2 {
  margin-bottom: 0;
  font-size: clamp(2.7rem, 5vw, 5.5rem);
}

.data-copy > p {
  color: rgba(253, 248, 237, 0.72);
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
}

.data-copy > .analysis-tool {
  margin: 30px 0 0;
  padding: 18px 0 18px 22px;
  border-left: 2px solid var(--signal);
  color: rgba(253, 248, 237, 0.62);
  font-size: 0.82rem;
}

.analysis-tool a {
  color: var(--signal);
  font-weight: 600;
  text-decoration: none;
}

.analysis-tool a:hover,
.analysis-tool a:focus-visible {
  text-decoration: underline;
}

.data-status {
  margin-top: 46px;
  padding: 24px;
  border: 1px solid rgba(253, 248, 237, 0.26);
}

.data-status span {
  color: var(--sand);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.data-status strong {
  display: block;
  margin: 22px 0 8px;
  font-size: 1.15rem;
  font-weight: 500;
}

.data-status p {
  margin: 0;
  color: rgba(253, 248, 237, 0.58);
  font-size: 0.82rem;
}

.data-modules {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 30px;
  border-top: 1px solid rgba(253, 248, 237, 0.25);
  border-bottom: 1px solid rgba(253, 248, 237, 0.25);
}

.data-modules > div {
  min-height: 235px;
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-left: 1px solid rgba(253, 248, 237, 0.25);
}

.data-modules > div:first-child {
  border-left: 0;
}

.data-modules span {
  color: var(--sand);
  font-size: 0.68rem;
  font-weight: 600;
}

.data-modules p {
  margin: 55px 0 auto;
  font-size: 1.2rem;
  line-height: 1.25;
}

.data-modules i {
  color: rgba(253, 248, 237, 0.46);
  font-size: 0.64rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sources-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.55fr) minmax(500px, 1.45fr);
  align-items: start;
  gap: clamp(60px, 10vw, 160px);
}

.sources-layout header {
  position: sticky;
  top: 125px;
}

.sources-layout h2 {
  margin-bottom: 30px;
  font-size: clamp(2.7rem, 4.7vw, 5rem);
}

.sources-layout header > p:last-child {
  color: var(--muted);
  font-size: 0.88rem;
}

.source-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  gap: 22px;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}

.source-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.source-list li > span {
  color: var(--leaf);
  font-size: 0.69rem;
  font-weight: 600;
}

.source-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.source-list strong {
  color: var(--ink);
  font-weight: 600;
}

.source-list a {
  align-self: start;
  color: var(--forest);
  font-size: 0.69rem;
  font-weight: 600;
  text-decoration: none;
}

.collaboration {
  position: relative;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--forest);
  color: var(--ivory);
}

.collaboration > img,
.collaboration__shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.collaboration > img {
  object-fit: cover;
  object-position: 50% 36%;
}

.collaboration__shade {
  z-index: 1;
  background: linear-gradient(90deg, rgba(12, 32, 14, 0.94) 0%, rgba(12, 32, 14, 0.76) 55%, rgba(12, 32, 14, 0.36));
}

.collaboration__inner {
  position: relative;
  z-index: 4;
  padding: 110px 0;
}

.collaboration h2 {
  max-width: 940px;
  margin-bottom: 30px;
  font-family: "Work Sans", Arial, sans-serif;
  font-size: clamp(3.1rem, 6vw, 7.2rem);
  font-weight: 600;
  line-height: 1;
}

.collaboration__inner > p:not(.eyebrow) {
  max-width: 670px;
  margin-bottom: 38px;
  color: rgba(253, 248, 237, 0.76);
  font-size: 1.05rem;
}

.site-footer {
  padding: 72px 0 25px;
  background: var(--ink);
  color: var(--ivory);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 0.85fr 1fr auto;
  align-items: end;
  gap: 55px;
  padding-bottom: 58px;
}

.brand--footer {
  color: var(--ivory);
}

.brand--footer .brand__logo {
  filter: brightness(0) invert(1);
  opacity: 0.96;
}

.site-footer__top > p {
  max-width: 380px;
  margin: 0;
  color: rgba(253, 248, 237, 0.58);
  font-size: 0.83rem;
}

.footer-portal {
  font-size: 0.75rem;
  text-decoration: none;
}

.footer-portal strong {
  color: var(--signal);
  font-weight: 500;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-top: 21px;
  border-top: 1px solid rgba(253, 248, 237, 0.18);
  color: rgba(253, 248, 237, 0.42);
  font-size: 0.65rem;
}

.site-footer__bottom p {
  margin: 0;
}

.site-footer__bottom a:hover {
  color: var(--ivory);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 800ms var(--ease), transform 800ms var(--ease);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js .hero__signal[data-reveal].is-visible {
  transform: perspective(900px) rotateX(var(--signal-rotate-x)) rotateY(var(--signal-rotate-y));
}

.js .hero__signal[data-reveal].is-visible.is-pulsing {
  transform: perspective(900px) rotateX(var(--signal-rotate-x)) rotateY(var(--signal-rotate-y)) scale(0.992);
}

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

@media (max-width: 1120px) {
  .primary-nav {
    gap: 17px;
  }

  .primary-nav a:nth-child(2),
  .primary-nav a:nth-child(5) {
    display: none;
  }

  .hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(265px, 0.55fr);
    gap: 50px;
  }

  .research-card {
    padding-inline: 25px;
  }

  .principles-layout,
  .sources-layout {
    grid-template-columns: 0.65fr 1.35fr;
    gap: 65px;
  }
}

@media (max-width: 860px) {
  :root {
    --shell: min(100% - 34px, 720px);
  }

  html {
    scroll-padding-top: 76px;
  }

  .site-header__inner {
    min-height: 70px;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .primary-nav {
    position: fixed;
    z-index: 95;
    top: 70px;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 35px 24px 50px;
    overflow: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-12px);
    background: var(--ivory);
    transition: opacity 200ms ease, transform 220ms var(--ease), visibility 0s linear 220ms;
  }

  .nav-open .primary-nav {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
  }

  .nav-open .nav-toggle__lines i:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .nav-open .nav-toggle__lines i:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  .primary-nav a,
  .primary-nav a:nth-child(2),
  .primary-nav a:nth-child(5) {
    display: block;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
    font-size: 1.2rem;
  }

  .primary-nav a::after {
    display: none;
  }

  .primary-nav__portal {
    margin-top: 25px;
    padding: 16px !important;
    text-align: center;
  }

  .hero {
    min-height: 810px;
  }

  .hero__shade {
    background: linear-gradient(0deg, rgba(9, 28, 11, 0.92) 0%, rgba(9, 28, 11, 0.6) 66%, rgba(9, 28, 11, 0.32));
  }

  .hero__inner {
    grid-template-columns: 1fr;
    align-content: end;
    gap: 42px;
    padding: 95px 0 80px;
  }

  .hero h1 {
    font-size: clamp(3.75rem, 13vw, 7rem);
  }

  .hero__signal {
    max-width: 430px;
  }

  .hero__scroll {
    display: none;
  }

  .intro-grid,
  .section-heading,
  .method-layout,
  .signal-layout,
  .field-story,
  .principles-layout,
  .data-layout,
  .sources-layout {
    grid-template-columns: 1fr;
  }

  .intro-grid,
  .section-heading,
  .method-layout,
  .signal-layout,
  .field-story,
  .principles-layout,
  .sources-layout {
    gap: 45px;
  }

  .intro-copy {
    max-width: 650px;
    padding-top: 0;
  }

  .section-heading {
    align-items: start;
  }

  .research-grid {
    grid-template-columns: 1fr;
  }

  .agenda-grid {
    grid-template-columns: 1fr;
  }

  .research-card,
  .research-card:first-child {
    min-height: 410px;
    border-top: 1px solid rgba(253, 248, 237, 0.22);
    border-left: 0;
  }

  .research-card:first-child {
    border-top: 0;
  }

  .research-card h3 {
    margin-top: 45px;
  }

  .research-card > p:not(.research-card__status) {
    min-height: 0;
  }

  .method-image {
    width: min(100%, 560px);
    height: min(600px, 105vw);
  }

  .signal-visual {
    max-width: 720px;
  }

  .field-story__copy {
    max-width: 630px;
  }

  .principles-layout header,
  .sources-layout header {
    position: static;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item--wide {
    grid-column: 1 / -1;
  }

  .gallery-item {
    height: 600px;
  }

  .gallery-item--wide {
    height: 430px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .data-layout {
    gap: 50px;
  }

  .data-modules {
    grid-column: auto;
    grid-template-columns: repeat(2, 1fr);
  }

  .data-modules > div:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(253, 248, 237, 0.25);
  }

  .data-modules > div:nth-child(4) {
    border-top: 1px solid rgba(253, 248, 237, 0.25);
  }

  .site-footer__top {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-portal {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .section {
    padding: 80px 0;
  }

  .brand__logo {
    width: 112px;
  }

  .brand__division {
    font-size: 0.62rem;
  }

  .nav-toggle__label {
    display: none;
  }

  .hero {
    min-height: 820px;
  }

  .hero__image {
    object-position: 57% 42%;
  }

  .hero__inner {
    padding-bottom: 55px;
  }

  .hero h1 {
    font-size: clamp(3.55rem, 17.5vw, 5.3rem);
  }

  .hero__lead {
    font-size: 1rem;
  }

  .hero__signal {
    display: none;
  }

  .hero__actions,
  .collaboration__actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .eyebrow {
    font-size: 0.66rem;
  }

  .section-heading {
    margin-bottom: 50px;
  }

  .research-card {
    min-height: 430px;
  }

  .agenda-card {
    min-height: 390px;
    padding: 25px 21px;
  }

  .agenda-card h3 {
    margin-top: 45px;
  }

  .method-list li {
    grid-template-columns: 34px 1fr;
    gap: 14px;
  }

  .method-image {
    height: 470px;
  }

  .signal-visual {
    margin-inline: -14px;
  }

  .signal-visual__top {
    justify-content: space-between;
    gap: 10px;
    font-size: 0.55rem;
  }

  .field-story__main {
    height: 460px;
  }

  .principles-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .principles-grid article {
    min-height: 235px;
  }

  .principles-grid h3 {
    margin-top: 55px;
  }

  .gallery-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .gallery-grid {
    width: calc(100% - 14px);
    grid-template-columns: 1fr;
  }

  .gallery-item,
  .gallery-item--wide {
    height: 520px;
    grid-column: auto;
  }

  .gallery-item--wide img {
    object-position: 48% center;
  }

  .team-card {
    min-height: 235px;
  }

  .data-modules {
    grid-template-columns: 1fr;
  }

  .data-modules > div,
  .data-modules > div:nth-child(2) {
    min-height: 190px;
    border-top: 1px solid rgba(253, 248, 237, 0.25);
    border-left: 0;
  }

  .data-modules > div:first-child {
    border-top: 0;
  }

  .data-modules p {
    margin-top: 36px;
  }

  .source-list li {
    grid-template-columns: 30px 1fr;
    gap: 12px;
  }

  .source-list a {
    grid-column: 2;
  }

  .collaboration {
    min-height: 720px;
  }

  .collaboration__shade {
    background: rgba(12, 32, 14, 0.82);
  }

  .collaboration h2 {
    font-size: clamp(3rem, 14vw, 5rem);
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .footer-portal {
    grid-column: auto;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .hero__scroll,
  .nav-toggle,
  .collaboration,
  .site-footer {
    display: none !important;
  }

  .section {
    padding: 40px 0;
  }

  body,
  .section--dark,
  .section--principles,
  .section--data {
    background: #fff;
    color: #000;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}