:root {
  --bone: #f7f5f0;
  --ink: #14201d;
  --forest: #123b33;
  --forest-lift: #1a4d43;
  --green-link: #1f5c50;
  --amber: #f0b25c;

  /* forest is hue 168; its opposite on the wheel, at the same depth */
  --claret: #3b1219;
  --blush: #f0a0a8;

  --line: #e2ded3;

  /* Archivo carries the display + UI voice; the serif carries reading text. */
  --display: "Space Grotesk", Archivo, Helvetica, Arial, sans-serif;
  --body: "Source Serif 4", Charter, "Iowan Old Style", Georgia, serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

/* everything structural stays in Archivo */
.site-header, .site-nav, .btn, .eyebrow,
h1, h2, h3, .partners em, .site-footer,
.verticals li, .partners li, .mailto {
  font-family: var(--display);
}

a { text-decoration: none; color: var(--green-link); }
a:hover { color: var(--forest); }

/* ---------- header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 12px 40px;
  background: var(--bone);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 18px; color: var(--ink); }
.brand:hover { color: var(--ink); }

.logo { height: 54px; width: auto; display: block; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
  font-weight: 600;
}

.site-header { position: sticky; top: 0; z-index: 10; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  min-height: 720px;
}

.hero-panel {
  position: relative;
  overflow: hidden;
  background: var(--forest);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 30px;
  padding: 96px 88px;
}

/* soft organic shapes behind the text */
.blobs {
  position: absolute;
  inset: -20% 10% -20% -30%;
  pointer-events: none;
  background:
    radial-gradient(closest-side at 70% 40%, var(--forest-lift) 0 70%, transparent 71%),
    radial-gradient(closest-side at 20% 75%, var(--forest-lift) 0 68%, transparent 69%);
}

.hero-panel h1,
.hero-panel p,
.actions { position: relative; }

.hero-panel h1 {
  margin: 0;
  font-size: 62px;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--amber);
  max-width: 13ch;
  text-wrap: pretty;
}

.hero-panel p {
  margin: 0;
  font-size: 19px;
  line-height: 1.55;
  color: #e6ece7;
  max-width: 46ch;
  text-wrap: pretty;
}

.actions { display: flex; flex-wrap: wrap; gap: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 34px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-solid { background: var(--amber); color: var(--ink); }
.btn-solid:hover { background: var(--bone); color: var(--forest); }

.btn-ghost { border: 2px solid #7fa89c; color: var(--bone); }
.btn-ghost:hover { background: var(--bone); color: var(--forest); border-color: var(--bone); }

/* ---------- media side ---------- */
.hero-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-linear-gradient(135deg, #e8e4d8 0 14px, #ded9ca 14px 28px);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* panel holding the animated DNA helix */
.hero-media-dna {
  background: var(--bone);
  overflow: hidden;
}

#dna-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media-dna canvas {
  display: block;
}

.placeholder {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #5c5a4e;
  background: var(--bone);
  padding: 10px 16px;
}

.site-nav .active { color: var(--ink); border-bottom: 2px solid var(--amber); padding-bottom: 3px; }

/* ---------- page hero (subpages) ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--forest);
  padding: 92px 40px 84px;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% -40% 55%;
  pointer-events: none;
  background: radial-gradient(closest-side at 50% 50%, var(--forest-lift) 0 70%, transparent 71%);
}
.page-hero .wrap { position: relative; }
.page-hero h1 {
  margin: 22px 0 0;
  font-size: 52px;
  line-height: 1.08;
  letter-spacing: -0.022em;
  color: var(--amber);
  max-width: 16ch;
  text-wrap: balance;
}
.page-hero .eyebrow-light { margin-bottom: 0; }

/* ---------- sections ---------- */
.section { padding: 110px 40px; border-top: 1px solid var(--line); }
.section-tint { background: #f1eee6; }
.section-dark {
  background: var(--forest);
  color: #e6ece7;
  border-top: none;
}
/* keep back-to-back dark sections from reading as one block */
.section-dark + .section-dark { border-top: 1px solid #2c5a51; }

/* the complement of the forest green, for a section that must not read as green */
.section-contrast {
  background: var(--claret);
  color: #f2dcdc;
  border-top: none;
}
.section-contrast .eyebrow { color: var(--blush); }
.section-contrast .lede { color: #fff; }
.section-contrast .mailto { color: var(--blush); }
.section-contrast .mailto:hover { border-bottom-color: var(--blush); }

.wrap { max-width: 1120px; margin: 0 auto; }

.split {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  align-items: start;
}

.col-body { max-width: 68ch; }
.col-body p { margin: 0 0 20px; font-size: 18px; line-height: 1.7; }
.col-body p:last-child { margin-bottom: 0; }

.eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-link);
}
.eyebrow-light { color: var(--amber); margin-bottom: 48px; }

.lede {
  font-size: 25px !important;
  line-height: 1.5 !important;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}
.section-dark .lede { color: #fff; }

/* expansion of the name, set so the letters that build it read first */
.acronym {
  font-family: var(--display) !important;
  font-size: 15px !important;
  line-height: 1.5 !important;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #8d8877;
  margin: 0 0 26px !important;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.acronym b { font-weight: 700; color: var(--forest); }
.acronym span { color: var(--line); padding: 0 4px; }

.note { font-size: 16px !important; color: #5c5a4e; }
.section-dark .note { color: #b7c7c0; }

/* ---------- values ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 72px;
  row-gap: 46px;
}

/* no boxes: each value sits under its own hairline */
.card {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid #2c5a51;
}

.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 46px;
  height: 1px;
  background: var(--amber);
}

.card h3 {
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.25;
  color: var(--amber);
  letter-spacing: -0.012em;
  text-wrap: balance;
}

.card p {
  margin: 0;
  font-size: 17px;
  line-height: 1.68;
  color: #bccdc6;
  max-width: 44ch;
}

/* ---------- run by ---------- */
.runby {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.runby-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8d8877;
}

.runby p { margin: 0 !important; font-size: 19px !important; font-weight: 600; }
.runby a { border-bottom: 1px solid rgba(31, 92, 80, 0.3); }
.runby a:hover { border-bottom-color: var(--forest); }

/* ---------- verticals ---------- */
.verticals {
  list-style: none;
  margin: 30px 0 26px;
  padding: 0;
  border-top: 1px solid var(--line);
}
.verticals li {
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 17px;
  font-weight: 600;
}

/* ---------- partners ---------- */
.partners { list-style: none; margin: 30px 0 26px; padding: 0; }
.partners li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
  font-weight: 600;
}
.rank {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  color: #8d8877;
}
.partners em {
  font-style: normal;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--amber);
  padding: 4px 9px;
  border-radius: 999px;
}

/* ---------- roadmap ---------- */
.phase {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 56px;
  padding: 46px 0;
  border-bottom: 1px solid var(--line);
}
.phase:first-of-type { border-top: 1px solid var(--line); margin-top: 48px; }
.phase:last-of-type { border-bottom: none; padding-bottom: 0; }

.phase-num {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8d8877;
  margin-bottom: 10px;
}
.phase-head h3 {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--forest);
  text-wrap: balance;
}
.phase-body { max-width: 68ch; }
.phase-body p { margin: 0 0 20px; font-size: 18px; line-height: 1.7; }

.dates { margin: 26px 0 22px; }
.dates > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}
.dates dt {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--green-link);
  padding-top: 2px;
}
.dates dd { margin: 0; font-size: 17px; line-height: 1.65; }

/* ---------- contact ---------- */
.mailto {
  display: inline-block;
  margin-top: 8px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--amber);
  border-bottom: 2px solid transparent;
}
.mailto:hover { color: var(--amber); border-bottom-color: var(--amber); }

/* ---------- team ---------- */
.team {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 52px 44px;
}

.person { display: flex; flex-direction: column; }

.avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  margin-bottom: 22px;
  object-fit: cover;
  background: #e8e4d8;
  border: 1px solid var(--line);
  font-family: var(--display);
  font-size: 30px;
  font-weight: 700;
  color: var(--forest);
}

/* portraits are taller than wide, so bias the crop toward the face */
img.avatar { object-position: center 18%; }

.person h3 {
  margin: 0 0 4px;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--forest);
}

.role {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-link);
}

.bio { margin: 0 0 14px; font-size: 17px; line-height: 1.65; }

.person-link { font-size: 15px; }

/* ---------- footer ---------- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 26px 40px;
  background: var(--forest);
  border-top: 1px solid #2c5a51;
  font-size: 13px;
  color: #b7c7c0;
}

.footer-text { display: flex; flex-direction: column; gap: 7px; }

.footer-text > span:first-child {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #e0e9e4;
}

.footer-runby {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #90a49d;
}
.footer-runby a { color: #b7c7c0; border-bottom: 1px solid rgba(183, 199, 192, 0.35); }
.footer-runby a:hover { color: var(--amber); border-bottom-color: var(--amber); }

.footer-nav { display: flex; gap: 26px; }
.footer-nav a { color: #b7c7c0; }
.footer-nav a:hover { color: var(--amber); }

/* ---------- papers ---------- */
.papers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 52px 40px;
}
@media (max-width: 1180px) {
  .papers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.paper {
  display: flex;
  flex-direction: column;
  padding-top: 26px;
  border-top: 2px solid var(--forest);
}

.paper-venue {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8d8877;
  margin-bottom: 14px;
}

.paper-title {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--forest);
  text-wrap: balance;
}

.paper-abstract {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.65;
}

.paper-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: auto; }
.paper-links .btn {
  padding: 13px 22px;
  font-size: 13px;
  letter-spacing: 0.07em;
  text-align: center;
}
.btn-paper { background: var(--forest); color: var(--bone); }
.btn-paper:hover { background: var(--forest-lift); color: var(--bone); }
.btn-paper-ghost { border: 2px solid var(--forest); color: var(--forest); }
.btn-paper-ghost:hover { background: var(--forest); color: var(--bone); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .papers { grid-template-columns: 1fr; gap: 44px; }
  .paper-title { font-size: 24px; }
  .section { padding: 72px 28px; }
  .split, .phase { grid-template-columns: 1fr; gap: 22px; }
  .cards { grid-template-columns: 1fr; row-gap: 34px; }
  .card { padding-top: 22px; }
  .eyebrow-light { margin-bottom: 30px; }
  .lede { font-size: 21px !important; }
  .phase:first-of-type { margin-top: 32px; }
  .dates > div { grid-template-columns: 1fr; gap: 4px; }
  .mailto { font-size: 22px; word-break: break-all; }
  .site-header { position: static; }
  .logo { height: 40px; }
  .site-header { padding: 10px 24px; }
  .acronym { font-size: 13px !important; }
  .page-hero { padding: 56px 28px 60px; }
  .page-hero h1 { font-size: 36px; }
  .team { grid-template-columns: 1fr; gap: 40px; }
  .avatar { width: 84px; height: 84px; font-size: 28px; }
}

@media (max-width: 980px) {
  .site-header { flex-direction: column; align-items: flex-start; gap: 20px; }
  .site-nav { flex-wrap: wrap; gap: 20px; }
  .hero { grid-template-columns: 1fr; }
  .hero-media { min-height: 380px; order: -1; }
  .hero-panel { padding: 64px 32px; }
  .hero-panel h1 { font-size: 44px; }
}

/* collaboration logo row on the home page */
.collab-logos {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 48px;
  margin-top: 36px;
}
.collab-logos img {
  height: 84px;
  width: auto;
  max-width: 100%;
  mix-blend-mode: multiply;
}
@media (max-width: 720px) {
  .collab-logos { gap: 28px; }
  .collab-logos img { height: 51px; }
}