/* Research paper section adapted from the supplied design. */
#research{
  --bg: #FFFDF6;
  --pocket: #fafae2;
  --ink: #000;
  --muted: #9a9a9c;
  position: relative;
  z-index: 1;
  background: transparent;
  padding: clamp(24px, 2vw, 32px) 24px clamp(96px, 14vw, 200px);
  overflow: hidden;
}
#research{ --display: 'Product Sans', 'Google Sans', 'Outfit', system-ui, sans-serif; }
#research .research__headline{
  max-width: 1200px;
  margin: 0 auto clamp(40px, 5vw, 72px);
  text-align: center;
  font-family: 'Raleway', system-ui, sans-serif;
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.7rem, 2.6vw, 3rem);
  line-height: 1.2;
  color: var(--ink);
}
#research .research__headline .w{
  display: inline-block;
  will-change: opacity, transform;
}
html.js-on #research .research__headline .w{ opacity: .14; transform: translateY(.5em); }
#research .research__cards{
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: clamp(40px, 6vw, 110px);
}
#research .card-wrap{
  opacity: 0;
  transform: translateY(48px);
  transition: opacity .8s ease, transform .9s cubic-bezier(.2,.8,.2,1);
}
#research .card-wrap.in{ opacity: 1; transform: none; }
#research .card-wrap:nth-child(2){ transition-delay: .15s; }
.no-js #research .card-wrap{ opacity: 1; transform: none; }
#research .card{
  --rot: -4deg;
  --y: 0px;
  display: block;
  container-type: inline-size;
  width: clamp(225px, 22.5vw, 450px);
  color: inherit;
  text-decoration: none;
  transform: rotate(var(--rot)) translateY(var(--y));
  transition: transform .6s cubic-bezier(.2,.8,.2,1);
  -webkit-tap-highlight-color: transparent;
}
#research .card--upi{ --rot: 3deg; --y: 14px; }
#research .card:hover,#research .card:focus-visible,#research .card[data-open="true"]{
  transform: rotate(calc(var(--rot) * .25)) translateY(calc(var(--y) - 8px));
}
#research .card:focus-visible{ outline: 3px solid var(--accent); outline-offset: 8px; border-radius: 4px; }
#research .card__stage{
  --u: calc(100cqw / 696);
  position: relative;
  width: 100%;
  aspect-ratio: 696 / 872;
  overflow: hidden;
}
#research .paper{
  position: absolute;
  left: calc(25.59 * var(--u));
  top: calc(.37 * var(--u));
  width: calc(645 * var(--u));
  height: calc(834 * var(--u));
  background: var(--paper);
}
#research .paper__title{
  position: absolute;
  left: calc(18 * var(--u));
  top: calc(35 * var(--u));
  width: calc(600 * var(--u));
  margin: 0;
  font: 400 calc(32 * var(--u)) / 1.17 'Raleway', system-ui, sans-serif;
  letter-spacing: calc(.6979 * var(--u));
  color: var(--ink);
}
#research .paper__open{
  position: absolute;
  left: 50%;
  top: calc(159.63 * var(--u));
  width: calc(577 * var(--u));
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: calc(47 * var(--u));
  opacity: 0;
  transition: opacity .35s ease;
}
#research .card:hover .paper__open,#research .card:focus-visible .paper__open,#research .card[data-open="true"] .paper__open{ opacity: 1; transition-delay: .3s; }
#research .paper__row{ display: flex; align-items: flex-start; }
#research .paper__row svg{ flex: none; width: calc(45.3 * var(--u)); height: calc(45.3 * var(--u)); }
#research .paper__row--lead{ gap: calc(22 * var(--u)); }
#research .paper__row--body{ gap: calc(19 * var(--u)); }
#research .paper__lead{
  margin: 0;
  font: 400 calc(35.85 * var(--u)) / 1.17 var(--display);
  color: var(--ink);
}
#research .paper__body{
  margin: 0;
  font: 300 calc(31.07 * var(--u)) / 1.2 'Inter', system-ui, sans-serif;
  color: var(--ink);
}
#research .pocket{
  position: absolute;
  left: 0;
  top: calc(175.66 * var(--u));
  width: calc(696.56 * var(--u));
  height: calc(696.56 * var(--u));
  transition: transform .75s cubic-bezier(.2,.8,.2,1);
}
#research .card:hover .pocket,#research .card:focus-visible .pocket,#research .card[data-open="true"] .pocket{ transform: translateY(calc(431.3 * var(--u))); }
#research .pocket svg{ position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
#research .pocket__meta{
  position: absolute;
  top: calc(18.9 * var(--u));
  left: calc(40 * var(--u));
  right: calc(38 * var(--u));
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font: italic 400 calc(36 * var(--u)) / 1.2 var(--display);
  letter-spacing: calc(.6979 * var(--u));
  color: var(--accent);
}
#research .pocket__desc{
  position: absolute;
  top: calc(106.7 * var(--u));
  left: calc(40.28 * var(--u));
  width: calc(608.85 * var(--u));
  margin: 0;
  font: 400 calc(36 * var(--u)) / 1.23 'Inter', system-ui, sans-serif;
  color: var(--muted);
  transition: opacity .3s ease;
}
#research .card:hover .pocket__desc,#research .card:focus-visible .pocket__desc,#research .card[data-open="true"] .pocket__desc{ opacity: 0; }
#research .card--stairs{ --paper: #eff8ff; --accent: #2176b9; --star: #3a80c0; }
#research .card--upi{ --paper: #ffeff7; --accent: #ff4fa8; --star: #a0708f; }
@media (prefers-reduced-motion: reduce){#research .card-wrap,#research .card,#research .pocket,#research .paper__open,#research .pocket__desc{ transition: none; }
#research .card-wrap{ opacity: 1; transform: none; }

}

@media (max-width: 700px) {
  #research .research__headline {
    max-width: 38rem;
    margin-bottom: 2.5rem;
    font-size: clamp(1.8rem, 7vw, 2.5rem);
  }
  #research .card { width: min(61.5vw, 390px); }
  #research .research__cards { gap: 2rem; }
}


/* Keep cards visible without JS; animate them only after initialization. */
#research .card-wrap { opacity: 1; transform: none; }
html.js-on #research .card-wrap { opacity: 0; transform: translateY(48px); }
html.js-on #research .card-wrap.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.js-on #research .card-wrap { opacity: 1; transform: none; } }