/* Shared research components: compact reading rhythm, explicit teaching structure. */
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 4px 20px; font-size: 12px; line-height: 1.5; color: var(--muted); }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 4px; }
.research-masthead { padding: 20px 0 4px; }
.research-content { padding: 16px 0 24px; font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.research-content h1 { font-size: clamp(24px, 3vw, 30px); line-height: 1.25; font-weight: 500; letter-spacing: -.4px; margin: 0 0 10px; text-wrap: pretty; }
.research-content h2 { font-size: 15px; line-height: 1.4; font-weight: 600; margin: 0 0 10px; }
.research-content p { max-width: 80ch; margin: 0 0 12px; }
.research-content a { text-underline-offset: 3px; text-decoration-color: var(--muted); }
.research-content a:hover { color: var(--accent); text-decoration-color: currentColor; }
.research-content section { padding: 18px 0; border-top: 1px solid #ffffff14; }
.research-content section p:last-child { margin-bottom: 0; }
.research-content .intro { font-size: 15px; line-height: 1.6; margin: 12px 0; }
.research-content .meta { color: var(--muted); font-size: 12px; line-height: 1.5; margin-bottom: 8px; }
.paper-heading { margin-bottom: 12px; }
.paper-context { display: grid; grid-template-columns: 76px minmax(0,1fr); gap: 12px; margin: 0; padding: 14px 0; border-top: 1px solid #ffffff14; }
.paper-context dt { font-weight: 600; }
.paper-context dd { margin: 0; }
.method-steps { padding-left: 24px; margin: 0; }
.method-steps li { padding-left: 4px; margin-bottom: 12px; max-width: 84ch; }
.method-steps li:last-child { margin-bottom: 0; }
.method-steps li::marker { color: var(--accent); font-weight: 500; }
.method-steps strong { font-weight: 600; }
.constraints { margin: 0; padding-left: 20px; }
.constraints li { padding-left: 2px; margin-bottom: 8px; max-width: 84ch; }
.constraints li:last-child { margin-bottom: 0; }
.evidence-table { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 13px; line-height: 1.55; text-align: left; }
.evidence-table th { font-weight: 500; color: var(--muted); padding: 0 14px 8px 0; }
.evidence-table td { vertical-align: top; padding: 10px 14px 10px 0; border-top: 1px solid #ffffff14; }
.evidence-table th:last-child, .evidence-table td:last-child { padding-right: 0; }
.fact-list { margin: 16px 0; }
.fact-list > div { display: grid; grid-template-columns: 150px minmax(0,1fr); gap: 20px; border-top: 1px solid #ffffff14; padding: 12px 0; }
.fact-list dt { font-weight: 500; }
.fact-list dd { margin: 0; max-width: 72ch; }
.reference-detail { border-top: 1px solid #ffffff14; font-size: 13px; }
.reference-detail summary, .audio-detail summary { display: list-item; cursor: pointer; min-height: 44px; padding: 12px 0; width: fit-content; color: var(--muted); }
.reference-detail summary:hover, .audio-detail summary:hover { color: var(--ink); }
.reference-detail .fact-list { margin-top: 0; }
.audio-detail { font-size: 12px; }
.audio-detail summary { color: var(--accent); }
.research-content audio { display: block; width: 100%; max-width: 680px; margin: 0 0 8px; }
.research-content img { display: block; max-width: 100%; height: auto; margin: 8px 0 16px; }
.topics { display: flex; flex-wrap: wrap; gap: 0 18px; margin: 8px 0 12px; font-size: 12px; color: var(--muted); }
.topics a { display: inline-flex; align-items: center; min-height: 36px; text-decoration: none; }
.topics a:hover { text-decoration: underline; }
.paper-list { list-style: none; margin: 0; padding: 0; }
.paper-list > li { padding: 14px 0; border-top: 1px solid #ffffff14; }
.paper-list h2 { font-size: 16px; font-weight: 500; line-height: 1.4; margin: 0 0 5px; }
.paper-list h2 a { text-decoration: none; }
.paper-list h2 a:hover { text-decoration: underline; }
.paper-list p { font-size: 13px; line-height: 1.55; margin: 0 0 6px; }
.paper-list .meta { font-size: 11px; margin-bottom: 0; }
.archive-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 16px; }
.archive-heading h1 { font-size: 24px; margin-bottom: 8px; }
.research-content label { display: block; color: var(--muted); font-size: 12px; margin: 8px 0 6px; }
.research-content input[type="search"] { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #ffffff2b; border-radius: 6px; color: var(--ink); background: #ffffff04; font: inherit; }
.research-content input::placeholder { color: var(--muted); opacity: .8; }
#search-status { color: var(--muted); font-size: 12px; margin-top: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (max-width: 760px) {
  .site-nav { justify-content: flex-start; }
  .research-masthead { gap: 0; padding: 16px 0 0; }
}
@media (max-width: 600px) {
  .research-content { padding-top: 14px; }
  .research-content h1 { font-size: 24px; }
  .paper-context { grid-template-columns: 1fr; gap: 4px; }
  .fact-list > div { grid-template-columns: 1fr; gap: 4px; }
  .evidence-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .evidence-table, .evidence-table tbody { display: block; }
  .evidence-table tr { display: grid; grid-template-columns: minmax(0,1fr); border-top: 1px solid #ffffff14; padding: 10px 0; }
  .evidence-table td { display: block; border: 0; padding: 0 0 8px; }
  .evidence-table td:last-child { padding-bottom: 0; }
  .evidence-table td::before { content: attr(data-label); display: block; color: var(--muted); font-size: 11px; margin-bottom: 2px; }
}
@media (forced-colors: active) {
  .evidence-table td, .paper-list > li, .paper-context, .fact-list > div, .research-content section, .reference-detail, .research-content input[type="search"] { border-color: CanvasText; }
}