body.research-page {
  --ink: #172033;
  --muted: #5f6b7d;
  --line: #dce4ee;
  --blue: #2456a6;
  --blue-deep: #163b75;
  --blue-soft: #edf4ff;
  --warm: #d97745;
  color: var(--ink);
}

.research-shell {
  max-width: 940px;
  margin: 0;
  padding: 0 0 50px;
}

.research-hero {
  margin-bottom: 28px;
  padding: 8px 0 22px;
  border-bottom: 1px solid var(--line);
}

.research-hero h1 {
  margin: 0 0 10px;
  padding: 0;
  border: 0;
  color: var(--blue-deep);
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -.01em;
}

.research-hero .lead {
  max-width: 820px;
  margin: 0;
  color: var(--muted);
  font-family: Georgia, serif;
  font-size: .98rem;
  line-height: 1.6;
}

.research-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 28px;
}

.research-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: .9rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(37, 55, 84, .05);
}

.research-nav a:hover {
  border-color: #9eb8dd;
  color: var(--blue);
}

.research-nav span {
  display: grid;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: .76rem;
}

.research-card {
  display: grid;
  grid-template-columns: minmax(300px, .95fr) minmax(0, 1.05fr);
  gap: 38px;
  align-items: center;
  margin-bottom: 24px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 8px 28px rgba(35, 54, 84, .07);
}

.research-number {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--warm);
  font-family: Georgia, serif;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.research-card h2 {
  margin: 0 0 13px;
  padding: 0;
  border: 0;
  color: var(--blue-deep);
  font-size: 1.65rem;
  line-height: 1.2;
}

.research-card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-family: Georgia, serif;
  line-height: 1.65;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.research-tags span {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-family: Georgia, serif;
  font-size: .76rem;
  font-weight: 600;
}

.research-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: Georgia, serif;
  font-size: .86rem;
  font-weight: 600;
}

.research-links a {
  color: var(--blue);
}

.research-links a:hover {
  border-bottom: 1px solid var(--blue);
}

.research-visual {
  order: -1;
  margin: 0;
  overflow: hidden;
  border: 1px solid #e1e7ef;
  border-radius: 13px;
  background: #f8fafc;
}

.research-completion-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  padding: 10px;
  background: #fff;
}

.research-completion-pair img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 7px;
}

.research-completion-pair span {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.research-visual img {
  display: block;
  width: 100%;
  height: 270px;
  object-fit: contain;
  background: #fff;
}

.research-footer-note {
  margin: 10px 0 0;
  padding: 24px 28px;
  border-left: 4px solid var(--warm);
  border-radius: 10px;
  background: #fff8f3;
  color: #5d514b;
  font-family: Georgia, serif;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .research-hero { padding: 4px 0 18px; }
  .research-nav { grid-template-columns: 1fr; }
  .research-card { grid-template-columns: 1fr; gap: 24px; padding: 26px; }
}

@media (max-width: 520px) {
  .research-hero h1 { font-size: 1.75rem; }
  .research-card h2 { font-size: 1.4rem; }
  .research-visual img { height: 220px; }
}