:root {
  --paper: #eef4f6;
  --paper-deep: #dbe8ec;
  --ink: #152327;
  --muted: #53666c;
  --line: #b9cbd1;
  --clay: #2f7f91;
  --clay-dark: #1c6576;
  --moss: #416b68;
  --blue: #1e6d86;
  --white: #f7fbfc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  min-height: 72px;
  padding: 0 40px;
  border-bottom: 1px solid rgba(36, 31, 26, 0.14);
  background: rgba(238, 244, 246, 0.88);
  backdrop-filter: blur(18px);
}

.brand,
.main-nav,
.site-footer div {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background:
    linear-gradient(135deg, transparent 45%, var(--ink) 46%, var(--ink) 54%, transparent 55%),
    var(--paper);
}

.main-nav {
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

.main-nav a,
.site-footer a {
  transition: color 160ms ease;
}

.main-nav a:hover,
.site-footer a:hover {
  color: var(--ink);
}

.nav-action {
  justify-self: end;
  padding: 9px 15px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
  gap: 48px;
  align-items: end;
  min-height: calc(100vh - 72px);
  padding: 80px 40px 52px;
}

.hero-text-only {
  position: relative;
  grid-template-columns: 1fr;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(238, 244, 246, 0) 0%, rgba(219, 232, 236, 0.72) 100%),
    linear-gradient(rgba(28, 101, 118, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 101, 118, 0.08) 1px, transparent 1px);
  background-size: auto, 180px 180px, 180px 180px;
}

.hero-copy {
  max-width: 860px;
}

.hero-text-only .hero-copy {
  max-width: 1120px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--clay-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 0.98;
}

h1 {
  max-width: 860px;
  margin-bottom: 26px;
  font-size: clamp(56px, 6.4vw, 92px);
}

.hero-lede {
  max-width: 620px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 650;
}

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

.button.secondary {
  background: transparent;
}

.statement,
.split-section,
.feature-band,
.notes,
.contact {
  padding: 88px 40px;
  border-top: 1px solid var(--line);
}

.statement h2 {
  max-width: 1150px;
  margin: 0;
  font-size: clamp(38px, 5vw, 76px);
}

.split-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 64px;
}

.section-heading h2,
.feature-band h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(36px, 4vw, 62px);
}

.research-grid,
.note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.research-grid article,
.note-grid article {
  min-height: 245px;
  padding: 28px;
  background: var(--paper);
}

.number,
.date {
  display: block;
  margin-bottom: 44px;
  color: var(--muted);
  font-size: 13px;
}

h3 {
  margin-bottom: 12px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: 400;
  line-height: 1.08;
}

article p {
  color: var(--muted);
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1fr);
  gap: 70px;
  background: #10262d;
  color: var(--white);
}

.feature-band .eyebrow {
  color: #7fc5d7;
}

.work-list {
  border-top: 1px solid rgba(255, 250, 243, 0.25);
}

.work-list a {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 250, 243, 0.25);
}

.work-list span {
  color: rgba(255, 250, 243, 0.68);
  font-size: 14px;
}

.work-list strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(24px, 2.8vw, 40px);
  font-weight: 400;
  line-height: 1.08;
}

.notes .section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.note-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.note-grid article {
  min-height: 280px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
  background: var(--paper-deep);
}

.contact h2 {
  max-width: 900px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 40px 36px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  gap: 20px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

  .hero,
  .split-section,
  .feature-band,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
  }

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

@media (max-width: 680px) {
  .site-header {
    min-height: 64px;
    padding: 0 18px;
  }

  .brand {
    font-size: 18px;
  }

  .nav-action {
    display: none;
  }

  .hero,
  .statement,
  .split-section,
  .feature-band,
  .notes,
  .contact {
    padding: 52px 18px;
  }

  h1 {
    font-size: clamp(42px, 12vw, 56px);
  }

  .hero-lede {
    font-size: 18px;
  }

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

  .work-list a {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .contact .button {
    width: 100%;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 24px 18px 30px;
  }
}