/* Short teaching reference cards: 3 columns on desktop, 2 on tablet, 1 on phones. */
.teaching-history{margin-top:42px;padding-top:28px;border-top:1px solid var(--line)}
.teaching-history>h3{font-size:25px;margin:10px 0 12px}
.history-intro{font-size:13px;color:var(--muted)}
.history-group-title{font-size:15px;margin:22px 0 14px}
.teaching-timeline{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;align-items:start}
.teaching-timeline>li{min-width:0;display:flex;flex-direction:column;gap:9px;padding:15px 17px;border:1px solid var(--line);border-radius:4px;background:#ffffff03}
.history-card-meta{display:flex;align-items:baseline;flex-wrap:wrap;gap:3px 12px}
.history-card-meta strong{font-size:12px;color:var(--gold);font-weight:600}
.history-institution{font-size:12px;margin:0;color:var(--muted)}
.teaching-timeline>li>h4{font-size:14px;font-weight:500;line-height:1.65;overflow-wrap:anywhere}
.history-format,.history-actual-dates{display:block;font-size:12px;line-height:1.8;margin:4px 0 0;color:var(--muted);overflow-wrap:anywhere}
.history-links{display:flex;flex-wrap:wrap;gap:4px 15px;align-items:start}
.history-links a{display:inline-flex;gap:7px;align-items:center;font-size:12px;border-bottom:1px solid #6b665e;line-height:1.8;padding:3px 0}
.history-links a span{color:var(--gold)}
.history-card-details{border-top:1px solid var(--line);padding-top:5px}
.history-card-details summary{font-size:11px;color:var(--muted);cursor:pointer;padding:4px 0;line-height:1.7}
.history-card-details summary:hover{color:var(--gold)}
.history-more{margin-top:17px;border-top:1px solid var(--line);padding-top:12px}
.history-more>summary{font-size:13px;cursor:pointer;padding:4px 0 12px;min-height:44px}
@media(max-width:1050px){.teaching-timeline{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){
 .teaching-history{margin-top:32px;padding-top:24px}
 .teaching-timeline{gap:12px}
 .history-more>summary{font-size:12px}
 .history-links a{padding:8px 0}
 .history-card-details summary{padding:7px 0}
}
@media(max-width:560px){
 .teaching-timeline{grid-template-columns:1fr}
 .teaching-timeline>li{padding:12px 15px;gap:7px}
}

/* Multiple years of the same course remain available together. */
.history-group-years{font-size:12px;line-height:1.8;color:var(--gold);margin:0}
.history-year-records{padding:0;margin:10px 0 0;list-style:none}
.history-year-records>li{border-top:1px solid var(--line);padding:12px 0;display:block;min-width:0}
.history-year-records>li>strong{font-size:12px;color:var(--gold)}
.history-year-records h5{font-size:13px;line-height:1.8;margin:6px 0;overflow-wrap:anywhere;font-weight:500}
.history-year-records .history-institution{margin-top:4px}
.history-year-records .history-links{margin-top:8px}