.back-link { font-size: 13px; text-decoration: none; }
.paper-header h1 { font-size: 28px; line-height: 1.35; font-weight: 600; margin: 22px 0 14px; }
.authors { font-size: 13px; line-height: 1.7; color: var(--muted); }
.paper-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 20px 0 24px; font-size: 13px; color: var(--muted); }
.tab-bar { position: sticky; top: 0; z-index: 3; display: flex; gap: 24px; border-bottom: 1px solid var(--line); background: var(--background); }
.tab-bar button { padding: 14px 0; border: 0; border-bottom: 2px solid transparent; font-size: 14px; color: var(--muted); white-space: nowrap; }
.tab-bar button[aria-selected="true"] { border-bottom-color: var(--text); color: var(--text); font-weight: 600; }
.tab-bar button span { margin-left: 4px; font-size: 12px; font-weight: 400; color: var(--muted); }
.outline { margin: 20px 0 28px; font-size: 14px; }
.outline summary { color: var(--muted); padding: 4px 0; }
.outline nav { display: flex; flex-direction: column; gap: 10px; padding: 16px 0 0 16px; }
.outline a { line-height: 1.5; text-decoration: none; }
.outline a:hover { text-decoration: underline; }
.outline .outline-level-3 { padding-left: 16px; }
.paper-footer { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 20px; font-size: 12px; line-height: 1.7; color: var(--muted); }
.paper-footer p { margin-top: 0; }
#citations-panel > .search-box { margin-top: 24px; }
.result-count { font-size: 12px; color: var(--muted); margin: 16px 0 0; }
.references { list-style: none; padding: 0; margin-top: 0; }
.reference { font-size: 14px; line-height: 1.75; padding: 24px 0 24px 34px; border-bottom: 1px solid var(--line); position: relative; scroll-margin-top: 65px; }
.reference > .ltx_tag { position: absolute; left: 0; font-size: 12px; color: var(--muted); }
.reference .ltx_bib_title { display: inline-block; font-weight: 600; margin: 4px 0; }
.ltx_bibblock { display: block; }
.reference-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-top: 12px; font-size: 13px; }
.reference-actions .reference-paper, .reference-actions .reference-search:first-child { font-weight: 600; }
.reference-actions .reference-source { color: var(--muted); }
#popup-body > .reference-actions { margin: 0 0 16px; }
.glossary-section { margin-top: 24px; }
.glossary-section h2 { font-size: 20px; font-weight: 600; }
.glossary { margin: 0; }
.glossary > div { padding: 16px 0; border-bottom: 1px solid var(--line); }
.glossary dt { font-size: 14px; font-weight: 600; }
.glossary dd { font-size: 14px; line-height: 1.7; margin: 6px 0 0; color: var(--muted); }