.learning-research {
  padding-block: 100px 40px;
  scroll-margin-top: 92px;
}
.research-heading {
  max-width: 670px;
  margin-bottom: 38px;
}
.research-heading h2 {
  font-size: clamp(36px, 4.8vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.05em;
  margin: 18px 0 24px;
}
.research-heading > p:last-child {
  font-size: 19px;
  line-height: 1.65;
  color: #62666e;
}
.research-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.research-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: #f5f5f7;
  padding: 28px 25px;
  border-radius: 26px;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}
.research-digital {
  background: #eaf0f5;
}
.research-writing {
  background: #f4f1eb;
}
.research-category {
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.09em;
  font-weight: 650;
  color: #5e626c;
  margin: 0;
}
.research-stat {
  height: 146px;
  display: flex;
  align-items: center;
  font-size: 78px;
  font-weight: 650;
  letter-spacing: -0.07em;
  color: #243a4d;
}
.research-stat span {
  font-size: 39px;
  letter-spacing: -0.05em;
  margin-left: 5px;
}
.research-card h3 {
  margin: 0 0 15px;
  font-size: 25px;
  letter-spacing: -0.04em;
  line-height: 1.12;
}
.research-card > p:not(.research-category) {
  font-size: 14px;
  line-height: 1.65;
  color: #4e545c;
  margin: 0 0 15px;
}
.research-card > p.research-context {
  font-size: 12px;
  color: #62666d;
}
.research-source {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  font-weight: 600;
  color: #245ca4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
}
.research-source:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.research-source span {
  transition: transform 0.25s;
}
.research-source:hover span {
  transform: translate(2px, -2px);
}
.research-tutor-art {
  height: 146px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: start;
  gap: 7px;
}
.research-tutor-art span {
  background: #fff;
  font-size: 11px;
  padding: 9px 13px;
  border-radius: 13px 13px 13px 4px;
  box-shadow: 0 3px 12px #28323e06;
}
.research-tutor-art span:nth-child(2) {
  align-self: end;
  background: #e5edf8;
  border-radius: 13px 13px 4px 13px;
  color: #334e72;
}
.research-pen-art {
  height: 146px;
  display: grid;
  align-items: center;
}
.research-pen-art svg {
  width: 100%;
  max-height: 142px;
}
.research-ink {
  stroke-dasharray: 110;
  stroke-dashoffset: 0;
}
.nova-revealed .research-ink {
  animation: research-write 1s 0.25s both ease-out;
}
.learning-notes-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-top: 58px;
  scroll-margin-top: 92px;
}
.learning-notes-heading .eyebrow {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #6a6e75;
  margin: 0 0 12px;
}
.learning-notes-heading h3 {
  margin: 0;
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.04em;
}
.learning-notes-heading > p {
  max-width: 330px;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #636974;
}
.learning-notes-heading > p span {
  display: inline-block;
  margin-top: 6px;
  font-size: 11px;
}
.research-note {
  margin-top: 24px;
  border: 1px solid #e2e5e9;
  border-radius: 24px;
  background: #fff;
  scroll-margin-top: 92px;
}
.research-note > summary {
  padding: 26px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.025em;
  list-style: none;
}
.research-note > summary::-webkit-details-marker {
  display: none;
}
.research-note > summary > span:first-child {
  min-width: 0;
  line-height: 1.3;
}
.research-note-deck {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.5;
  color: #636974;
}
.research-note > summary:focus-visible {
  outline-offset: 3px;
  border-radius: 22px;
}
.learning-notes-editorial {
  max-width: 790px;
  margin: 22px 4px 0;
  color: #737880;
  font-size: 12px;
  line-height: 1.7;
}
.research-practice {
  margin-block: 28px;
  padding: 24px 28px;
  border-left: 3px solid #b3c5d4;
  border-radius: 0 17px 17px 0;
  background: #f5f7f9;
}
.research-practice .research-category {
  font-size: 10px;
  margin: 0;
}
.research-practice h4 {
  margin: 12px 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.research-practice p:last-child {
  margin-bottom: 0;
}
.research-note > summary small {
  display: block;
  color: #6a6e75;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin-bottom: 9px;
}
.research-expand {
  flex: none;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: #f2f3f5;
  color: #4d5561;
  border-radius: 50%;
  font-size: 23px;
  font-weight: 400;
  transition:
    transform 0.25s,
    background 0.25s;
}
.research-note[open] .research-expand {
  transform: rotate(45deg);
  background: #e8edf3;
}
.research-paper {
  border-top: 1px solid #eceef1;
  padding: 32px clamp(24px, 6vw, 70px) 44px;
}
.research-paper p {
  color: #505660;
  font-size: 16px;
  line-height: 1.85;
}
.research-paper .research-byline {
  font-size: 11px;
  color: #6a707a;
  margin: 0 0 24px;
}
.research-paper .research-abstract {
  color: #333b45;
  font-size: 18px;
}
.research-paper h3 {
  margin: 32px 0 12px;
  font-size: 23px;
  letter-spacing: -0.025em;
}
.research-paper sup a {
  color: #245ca4;
  padding: 2px 5px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.research-initiative {
  padding: 26px 28px;
  background: #f4f6f8;
  border-radius: 19px;
  margin-block: 30px;
}
.research-initiative h4 {
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin: 14px 0;
}
.research-initiative .research-category {
  font-size: 10px;
  margin: 0;
}
.research-initiative p:last-child {
  margin-bottom: 0;
}
.research-references {
  padding-left: 21px;
  margin: 20px 0 0;
}
.research-references li {
  font-size: 12px;
  line-height: 1.7;
  color: #57616e;
  padding-left: 5px;
  margin-block: 13px;
  scroll-margin-top: 100px;
}
.research-references a:hover {
  color: #245ca4;
  text-decoration: underline;
  text-underline-offset: 3px;
}
@keyframes research-write {
  from {
    stroke-dashoffset: 110;
  }
  to {
    stroke-dashoffset: 0;
  }
}
@media (hover: hover) {
  .research-note > summary:hover .research-expand {
    background: #e8edf3;
  }
  .research-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px #243a4d08;
  }
}
@media (max-width: 760px) {
  .learning-notes-heading {
    display: block;
    margin-top: 42px;
  }
  .learning-notes-heading > p {
    margin-top: 16px;
  }
  .research-note > summary small {
    font-size: 9px;
    line-height: 1.6;
    letter-spacing: 0.07em;
  }
  .research-practice {
    padding: 20px;
  }
  .learning-research {
    padding-block: 68px 20px;
  }
  .research-heading > p:last-child {
    font-size: 17px;
  }
  .research-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .research-card {
    padding: 27px;
  }
  .research-tutor-art,
  .research-pen-art {
    max-width: 270px;
    width: 100%;
    align-self: center;
  }
  .research-note > summary {
    padding: 22px;
    font-size: 18px;
  }
  .research-paper {
    padding: 24px 22px 30px;
  }
  .research-paper p {
    font-size: 15px;
  }
  .research-paper .research-abstract {
    font-size: 17px;
  }
  .research-initiative {
    padding: 20px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .research-note[open] .research-paper {
    animation: learning-note-arrive 240ms ease-out;
  }
  @keyframes learning-note-arrive {
    from {
      opacity: 0;
      transform: translateY(5px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }
}
@media (prefers-reduced-motion: reduce) {
  .research-card,
  .research-expand,
  .research-source span {
    transition: none;
  }
  .research-card:hover {
    transform: none;
  }
  .nova-revealed .research-ink {
    animation: none;
  }
}