:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #5d6765;
  --paper: #f8f7f2;
  --surface: #ffffff;
  --wash: #eef0ea;
  --blue: #31465b;
  --green: #486157;
  --amber: #ad7a36;
  --line: rgba(23, 32, 29, 0.14);
  --shadow: 0 24px 70px rgba(30, 43, 39, 0.11);
  --radius: 8px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(
      180deg,
      rgba(238, 240, 234, 0.9),
      rgba(248, 247, 242, 0) 420px
    ),
    var(--paper);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

p,
h1,
h2 {
  margin: 0;
}

h1,
h2 {
  max-width: 820px;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.55rem, 4.8vw, 4.65rem);
  line-height: 0.98;
}

h2 {
  font-size: clamp(2rem, 4vw, 4.2rem);
  line-height: 1.04;
}

.site-header {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--green);
  font-size: 0.78rem;
  box-shadow: 0 12px 28px rgba(30, 43, 39, 0.08);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 28px);
  color: var(--muted);
  font-size: 0.94rem;
}

.site-nav a {
  text-decoration: none;
}

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

.hero,
.section,
.site-footer {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  padding: clamp(38px, 5.6vw, 68px) 0 clamp(32px, 4.8vw, 52px);
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.7fr);
  align-items: center;
  gap: clamp(42px, 7vw, 86px);
}

.hero-copy {
  display: grid;
  gap: 22px;
}

.hero-copy p {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

.eyebrow {
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.research-visual {
  margin: 0;
  min-height: 420px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.92),
      rgba(238, 240, 234, 0.72)
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0 28px,
      rgba(23, 32, 29, 0.05) 29px 30px
    );
  box-shadow: var(--shadow);
}

.research-visual::before,
.research-visual::after {
  content: "";
  position: absolute;
  background: rgba(49, 70, 91, 0.08);
  transform: rotate(-12deg);
}

.research-visual::before {
  width: 250px;
  height: 115px;
  right: -54px;
  top: -28px;
}

.research-visual::after {
  width: 210px;
  height: 82px;
  left: -74px;
  bottom: 18px;
  background: rgba(173, 122, 54, 0.12);
}

.visual-topline,
.visual-grid,
.visual-thread,
.research-visual figcaption {
  position: relative;
  z-index: 1;
}

.visual-topline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-grid {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.visual-grid span {
  min-height: 92px;
  border: 1px solid rgba(23, 32, 29, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
}

.visual-grid span:nth-child(2) {
  background: rgba(49, 70, 91, 0.08);
}

.visual-grid span:nth-child(3) {
  background: rgba(72, 97, 87, 0.1);
}

.visual-thread {
  margin: 30px 0;
  display: grid;
  gap: 12px;
}

.visual-thread i {
  display: block;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(23, 32, 29, 0.12);
}

.visual-thread i:nth-child(2) {
  width: 74%;
  background: rgba(173, 122, 54, 0.34);
}

.visual-thread i:nth-child(3) {
  width: 58%;
  background: rgba(49, 70, 91, 0.24);
}

.research-visual figcaption {
  color: var(--muted);
  font-size: 0.95rem;
}

.section {
  padding: clamp(70px, 10vw, 128px) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  margin-bottom: clamp(30px, 5vw, 54px);
  display: grid;
  gap: 16px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 1fr);
  gap: clamp(32px, 6vw, 74px);
  align-items: start;
}

.lead-copy,
.about-copy,
.research-panel {
  display: grid;
  gap: 18px;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.6vw, 1.18rem);
}

.research-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
}

.research-list li,
.topic-grid span {
  min-height: 64px;
  padding: 16px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.64);
  color: var(--ink);
}

.research-section {
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100% - var(--max)) / 2));
  padding-right: max(20px, calc((100% - var(--max)) / 2));
  background: #eef0ea;
}

.research-panel {
  max-width: var(--max);
}

.topic-grid {
  margin: 16px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.topic-grid span {
  background: rgba(255, 255, 255, 0.58);
  font-size: 0.97rem;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 1fr);
  gap: clamp(32px, 6vw, 74px);
}

.site-footer {
  padding: 34px 0 42px;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.site-footer a,
.footer-name {
  color: var(--ink);
  font-weight: 800;
}

.site-footer a {
  display: inline-block;
  margin: 4px 0;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero,
  .split,
  .about-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

  .research-visual {
    min-height: 300px;
  }

  .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header {
    width: min(100% - 32px, var(--max));
    display: grid;
    gap: 18px;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 14px 18px;
  }

  .hero,
  .section,
  .site-footer {
    width: min(100% - 32px, var(--max));
  }

  h1 {
    font-size: clamp(2.15rem, 10.4vw, 3.1rem);
  }

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

  .research-list li,
  .topic-grid span {
    min-height: 56px;
  }

  .site-footer {
    display: grid;
  }

  .research-visual {
    min-height: 0;
    padding: 18px;
  }

  .visual-grid,
  .visual-thread {
    display: none;
  }
}