/* Shared Research colors and typography; each article retains its own layout. */
.research-article-page {
  --panel: var(--bg3);
  --ink: var(--text);
  --body: var(--text-soft);
  --muted: var(--text-muted);
  --line: var(--card-border);
  --cyan: var(--accent-text);
  padding-top: 0;
}
.research-article-page > .wrap { flex: 1; width: 100%; }
.research-article-page .page-layout:not(:has(.article-nav)) { grid-template-columns: minmax(0, 900px); }
.research-article-page .article-main h1,
.research-article-page .article-main h2,
.research-article-page .article-main h3 { color: var(--text); font-family: 'Montserrat', sans-serif; }
.research-article-page .article-main h1 { font-size: 34px; font-weight: 700; line-height: 1.25; letter-spacing: -.02em; }
.research-article-page .article-main h1 em { color: inherit; font-style: normal; }
.research-article-page .article-meta { gap: 8px 0; color: var(--text-dim); font: 500 11px/1.5 'Montserrat', sans-serif; }
.research-article-page .article-meta span { border-color: var(--line); }
.research-article-page .article-meta .open { color: var(--accent-text); }
.research-article-page .hero .eyebrow { color: var(--accent-text); font-family: 'Montserrat', sans-serif; font-weight: 600; }
.research-article-page .lede { color: var(--text-soft); font-family: 'Montserrat', sans-serif; font-size: 16px; font-weight: 400; line-height: 1.85; }
.research-article-page article h2 { font-size: 24px; font-weight: 700; line-height: 1.4; }
.research-article-page article h3 { font-size: 19px; font-weight: 600; line-height: 1.5; }
.research-article-page article p { color: var(--text-soft); font-size: 15px; font-weight: 400; line-height: 1.9; }
.research-article-page article strong { color: var(--text); font-weight: 600; }
.research-article-page article a { color: var(--accent-text); text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.research-article-page article a:hover { color: var(--text); }
.research-article-page .side-figure { scroll-margin-top: 82px; }
.research-article-page .side-figure figcaption { color: var(--text-muted); font: 400 12px/1.75 'Montserrat', sans-serif; }
.research-article-page .qpadm-model,
.research-article-page .formula,
.research-article-page .note,
.research-article-page .term { background: var(--bg3); color: var(--text-soft); border-color: var(--line); }
.research-article-page .formula { border-left-color: var(--accent); }
.research-article-page .model-heading,
.research-article-page .term strong { color: var(--text); }
.research-article-page .model-heading span:last-child { color: var(--text-dim); }
.research-article-page .model-key { color: var(--text-soft); }
.research-article-page .sources { color: var(--text-dim); }
.research-article-page .sources a { color: var(--accent-text); }

/* Keep the original sidebar's inherited type metrics and all per-page geometry.
   Only recolor its existing tabs, separators and links; no enclosing card. */
.research-article-page .article-nav { font-size: 16px; font-weight: 400; line-height: 1.65; }
.research-article-page .article-nav .nav-tab { color: var(--text-muted); background: var(--surface-inset); }
.research-article-page .article-nav .nav-tab.active,
.research-article-page .article-nav div.nav-tab { color: var(--text); background: var(--bg3); }
.research-article-page .article-nav a { color: var(--accent-text); }
.research-article-page .article-nav a:hover { color: var(--text); }
.research-article-page .associated small { color: var(--text-dim); }
.research-article-page .research-footer { font-family: 'Montserrat', sans-serif; font-weight: 500; line-height: 1.5; text-align: left; }

@media (max-width: 620px) {
  .research-article-page .article-main h1 { font-size: 28px; line-height: 1.3; }
  .research-article-page .lede { font-size: 15px; }
  .research-article-page article h2 { font-size: 22px; }
  .research-article-page article h3 { font-size: 18px; }
  .research-article-page article p { line-height: 1.85; }
  .research-article-page .article-meta { font-size: 10px; }
  .research-article-page .article-meta span { padding: 0 8px; }
  .research-article-page .article-meta span:first-child { padding-left: 0; }
  .research-article-page .side-figure figcaption { font-size: 11px; }
}