.research-lineage {
  margin: 1.5rem 0;
  padding: clamp(1rem, 2.5vw, 1.75rem);
  border: 1px solid rgba(123, 146, 179, 0.32);
  border-radius: 18px;
  background:
    linear-gradient(140deg, rgba(18, 27, 43, 0.98), rgba(10, 15, 25, 0.98)),
    #0d1017;
  color: #eaf0f8;
  box-shadow: 0 18px 50px rgba(3, 8, 18, 0.24);
}

.research-lineage__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.research-lineage__heading h2 {
  margin: 0.15rem 0 0;
  color: #fff;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: -0.03em;
}

.research-lineage__heading button {
  min-height: 44px;
  flex: 0 0 auto;
  padding: 0.65rem 1rem;
  border: 1px solid #8ab6ff;
  border-radius: 999px;
  background: #1768e5;
  color: #fff;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.research-lineage__heading button:hover:not(:disabled) {
  background: #2b78ee;
}

.research-lineage__heading button:focus-visible {
  outline: 3px solid #ffd36a;
  outline-offset: 3px;
}

.research-lineage__heading button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.research-lineage__intro,
.research-lineage__status,
.research-lineage__limitation,
.research-lineage noscript p {
  max-width: 78ch;
  color: #b9c6d8;
  line-height: 1.65;
}

.research-lineage__status {
  min-height: 1.65em;
  margin-bottom: 0;
}

.research-lineage[data-state="failed"] .research-lineage__status {
  color: #ffbfba;
}

.research-lineage__verified {
  display: inline-flex;
  margin: 1.2rem 0 0;
  padding: 0.38rem 0.62rem;
  border: 1px solid rgba(99, 229, 169, 0.55);
  border-radius: 999px;
  background: rgba(35, 170, 105, 0.12);
  color: #7ce8b2;
  font: 700 0.76rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
}

.research-lineage__summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 1rem 0;
  border: 1px solid rgba(123, 146, 179, 0.25);
  border-radius: 12px;
  background: rgba(123, 146, 179, 0.25);
}

.research-lineage__summary-grid div {
  min-width: 0;
  padding: 0.85rem;
  background: #111a29;
}

.research-lineage__summary-grid dt,
.research-lineage__artifact dt {
  color: #8294ae;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.research-lineage__summary-grid dd,
.research-lineage__artifact dd {
  margin: 0.28rem 0 0;
  overflow-wrap: anywhere;
  color: #fff;
  font-weight: 700;
}

.research-lineage__artifacts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.research-lineage__artifact {
  min-width: 0;
  padding: 0.9rem;
  border: 1px solid rgba(123, 146, 179, 0.26);
  border-radius: 12px;
  background: rgba(19, 29, 45, 0.74);
}

.research-lineage__artifact-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 0.75rem;
}

.research-lineage__artifact-heading strong,
.research-lineage__artifact code {
  overflow-wrap: anywhere;
}

.research-lineage__artifact-heading span {
  flex: 0 0 auto;
  color: #8fb8f8;
  font: 700 0.66rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  text-transform: uppercase;
}

.research-lineage__artifact > code {
  display: block;
  margin-top: 0.5rem;
  color: #9eabc0;
  font-size: 0.76rem;
}

.research-lineage__artifact dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0.8rem 0 0;
}

.research-lineage__dependencies {
  margin-top: 1.25rem;
}

.research-lineage__dependencies h3 {
  margin: 0 0 0.7rem;
  color: #fff;
  font-size: 1rem;
}

.research-lineage__edge-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.research-lineage__edge-list li {
  display: grid;
  min-width: 0;
  gap: 0.24rem;
  padding: 0.72rem;
  border-left: 3px solid #4e8cf0;
  background: rgba(78, 140, 240, 0.08);
}

.research-lineage__edge-list strong,
.research-lineage__edge-list span,
.research-lineage__edge-list code {
  overflow-wrap: anywhere;
}

.research-lineage__edge-list span,
.research-lineage__edge-list code {
  color: #93a4bc;
  font-size: 0.74rem;
}

@media (max-width: 720px) {
  .research-lineage__heading {
    align-items: stretch;
    flex-direction: column;
  }

  .research-lineage__heading button {
    width: 100%;
  }

  .research-lineage__summary-grid,
  .research-lineage__artifacts,
  .research-lineage__edge-list {
    grid-template-columns: 1fr;
  }

  .research-lineage__artifact dl {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .research-lineage *,
  .research-lineage *::before,
  .research-lineage *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}