.research-page {
  background: var(--bg);
  color: var(--ink);
}

.research-page .nav-shell a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.research-main {
  overflow: hidden;
}

.research-shell {
  width: min(100%, 1600px);
  margin: 0 auto;
  padding-right: 48px;
  padding-left: 48px;
}

body.research-page main.research-main > section {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 96px 0;
  border-bottom: 1px solid rgba(15, 15, 15, 0.08);
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", Arial, sans-serif;
}

body.research-page main.research-main > .reading-section {
  background: #f2f2f2;
}

body.research-page main.research-main > .positions-section {
  background: #f8f8f8;
}

body.research-page main.research-main > .architecture-section {
  border-bottom-color: rgba(255, 255, 255, 0.12);
  background: #1f1f1f;
  color: #f7f7f7;
}

body.research-page main.research-main > .understanding-section {
  background: #ededed;
}

body.research-page main.research-main > .open-problems-section {
  background: #f6f6f6;
}

body.research-page main.research-main > .partnership-section {
  background: #e2e2e2;
}

body.research-page main.research-main > .research-hero {
  display: flex;
  min-height: 78svh;
  align-items: center;
  padding-top: 144px;
  padding-bottom: 96px;
}

.research-hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 28rem) minmax(0, 760px);
  gap: 96px;
  align-items: end;
}

.research-hero-shell h1 {
  max-width: 840px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(44px, 4.6vw, 66px);
  font-weight: 410;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.research-hero-shell > p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 390;
  line-height: 1.28;
  letter-spacing: -0.02em;
}

.research-grid {
  display: grid;
  grid-template-columns: minmax(0, 28rem) minmax(0, 1fr);
  gap: 96px;
}

.research-grid > h2,
.section-intro > h2 {
  max-width: 32rem;
  margin: 0;
  color: var(--ink);
  font-size: 36px;
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.research-copy {
  max-width: 768px;
}

.research-copy p,
.section-intro > p,
.position-list p,
.understanding-grid p,
.architecture-flywheel p,
.architecture figcaption {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
}

.research-copy p + p {
  margin-top: 24px;
}

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

.section-intro > p {
  max-width: 620px;
}

.problem-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin: 64px 0 0;
  padding: 0;
  list-style: none;
}

.problem-list li {
  min-height: 96px;
  padding: 18px 12px 0 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: -0.01em;
}

.position-list {
  max-width: 768px;
}

.position-list article {
  position: relative;
  padding: 0 0 48px 28px;
  border-bottom: 1px solid rgba(15, 15, 15, 0.08);
}

.position-list article::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #8a8a8a;
}

.position-list article + article {
  padding-top: 48px;
}

.position-list article + article::before {
  top: 56px;
}

.position-list h3,
.understanding-grid h3 {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: -0.01em;
}

.position-list h3 {
  font-size: 20px;
  line-height: 28px;
  letter-spacing: -0.02em;
}

.architecture-section .section-intro > h2 {
  color: #fff;
}

.architecture-section .section-intro > p {
  color: rgba(255, 255, 255, 0.62);
}

.architecture {
  margin: 64px 0 0;
  padding: 40px;
  border: 0;
  background: #f4f4f4;
  color: var(--ink);
}

.architecture-levels,
.architecture-cycle,
.architecture-infrastructure {
  display: grid;
  gap: 12px;
}

.architecture-levels {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 24px;
}

.architecture-levels span,
.architecture-cycle span,
.architecture-infrastructure span {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border: 1px solid rgba(15, 15, 15, 0.12);
  background: var(--bg);
  color: var(--ink);
  font-size: 13px;
  font-weight: 400;
  line-height: 20px;
  text-align: center;
}

.architecture-cycle {
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
}

.architecture-cycle i {
  color: var(--muted);
  font-size: 14px;
  font-style: normal;
}

.architecture-substrate {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
  padding: 20px;
  border: 1px solid var(--ink);
  background: #111;
  color: #fff;
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  text-align: center;
}

.architecture-substrate span {
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
}

.architecture-flywheel {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 32px;
  margin-top: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.architecture-flywheel > span {
  color: var(--ink);
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
}

.architecture-infrastructure {
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  margin-top: 24px;
}

.architecture figcaption {
  margin-top: 20px;
  font-size: 12px;
  line-height: 20px;
}

.understanding-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.understanding-grid article {
  min-height: 220px;
  padding: 28px 24px 24px;
  border-top: 2px solid #7c7c7c;
  background: rgba(255, 255, 255, 0.42);
}

.understanding-grid article:nth-child(2) {
  border-top-color: #969696;
}

.understanding-grid article:nth-child(3) {
  border-top-color: #626262;
}

.partnership-section .research-grid {
  align-items: end;
}

.partnership-copy a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
}

.partnership-copy a span {
  transition: transform 160ms ease;
}

.partnership-copy a:hover span,
.partnership-copy a:focus-visible span {
  transform: translateX(3px);
}

@media (min-width: 640px) {
  body.research-page main.research-main > section {
    padding-top: 112px;
    padding-bottom: 112px;
  }

  body.research-page main.research-main > .research-hero {
    padding-top: 144px;
    padding-bottom: 96px;
  }
}

@media (max-width: 980px) {
  .research-hero-shell,
  .research-grid {
    grid-template-columns: minmax(0, 20rem) minmax(0, 1fr);
    gap: 56px;
  }

  .research-grid > h2,
  .section-intro > h2 {
    font-size: 32px;
  }
}

@media (max-width: 760px) {
  .research-shell {
    padding-right: 32px;
    padding-left: 32px;
  }

  body.research-page main.research-main > .research-hero {
    min-height: 72svh;
    padding-top: 128px;
    padding-bottom: 72px;
  }

  .research-hero-shell,
  .research-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .research-hero-shell > p {
    max-width: 620px;
  }

  .problem-list,
  .understanding-grid {
    grid-template-columns: 1fr 1fr;
  }

  .architecture {
    padding: 24px;
  }

  .understanding-grid article {
    min-height: 0;
  }

  .architecture-cycle {
    grid-template-columns: 1fr;
  }

  .architecture-cycle i {
    transform: rotate(90deg);
    text-align: center;
  }
}

@media (max-width: 520px) {
  .research-shell {
    padding-right: max(20px, env(safe-area-inset-right));
    padding-left: max(20px, env(safe-area-inset-left));
  }

  body.research-page main.research-main > section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  body.research-page main.research-main > .research-hero {
    min-height: 0;
    padding-top: calc(116px + env(safe-area-inset-top));
    padding-bottom: 64px;
  }

  .research-hero-shell h1 {
    font-size: clamp(38px, 11.5vw, 44px);
  }

  .research-hero-shell > p {
    margin-top: 32px;
    font-size: 18px;
  }

  .research-grid > h2,
  .section-intro > h2 {
    font-size: 30px;
  }

  .problem-list,
  .understanding-grid,
  .architecture-levels,
  .architecture-infrastructure,
  .architecture-flywheel {
    grid-template-columns: 1fr;
  }

  .architecture-substrate {
    align-items: center;
    flex-direction: column;
  }

  .partnership-copy a {
    min-height: 44px;
    align-items: center;
    padding-top: 8px;
  }
}