:root {
  --bg: #fbfaf7;
  --panel: #ffffff;
  --fg: #1d2127;
  --muted: #646a73;
  --rule: #e3dfd6;
  --rule-strong: #1d2127;
  --accent: #8a2c2c;
  --accent-soft: #f4e9e6;
  --hover: #f5f2ec;
  --serif: "Source Serif 4", "Iowan Old Style", Palatino, Georgia, serif;
  --sans: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --panel: #1d1f23;
    --fg: #e7e5e0;
    --muted: #9da2aa;
    --rule: #2f3237;
    --rule-strong: #e7e5e0;
    --accent: #e3907f;
    --accent-soft: #3a2a27;
    --hover: #22252a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 var(--serif); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

/* ---------- layout: main column + archive column on the right ---------- */
.wrap {
  max-width: 76rem; margin: 0 auto; padding: 2.5rem 1.25rem 1rem;
  display: grid; grid-template-columns: minmax(0, 1fr) 13rem; gap: 3rem;
}
.side { position: sticky; top: 1.5rem; align-self: start; font-family: var(--sans); font-size: .95rem; }
.box { border-left: 2px solid var(--rule); padding: .2rem 0 .2rem 1.1rem; margin-bottom: 2rem; }
.box h2 {
  font: 600 .75rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); margin: .2rem 0 .8rem;
}
.box ul { list-style: none; margin: 0; padding: 0; }
.box li { margin: .35rem 0; }
.box a { text-decoration: none; color: var(--fg); }
.box a:hover { color: var(--accent); }
.box a.current { color: var(--accent); font-weight: 600; }
.years { display: grid; grid-template-columns: 1fr 1fr; column-gap: .5rem; }

@media (max-width: 860px) {
  .wrap { grid-template-columns: 1fr; gap: 1.5rem; padding-top: 1.5rem; }
  .side { position: static; display: flex; flex-wrap: wrap; gap: 0 2rem; }
  .side .box { margin-bottom: 1rem; }
  .years { grid-template-columns: repeat(3, auto); column-gap: 1.2rem; }
}

/* ---------- header and intro ---------- */
.masthead h1 { font-size: 2.1rem; line-height: 1.15; margin: 0 0 .4rem; font-weight: 600; letter-spacing: -.01em; }
.kicker { font-family: var(--sans); font-size: .9rem; margin: 0 0 .4rem; }
.kicker a { color: var(--muted); text-decoration: none; }
.count { color: var(--muted); font-family: var(--sans); font-size: .9rem; margin: 0 0 1.5rem; }
.about { color: var(--fg); margin: 1rem 0 2.2rem; max-width: 44rem; }
.about p { margin: .6rem 0; }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 1.8rem; border-bottom: 1px solid var(--rule-strong); margin-bottom: .4rem; }
.tabs [role=tab] {
  font: 600 1rem/1 var(--sans); background: none; border: 0; color: var(--muted); cursor: pointer;
  padding: .7rem .1rem .75rem; border-bottom: 3px solid transparent; margin-bottom: -2px;
}
.tabs [role=tab][aria-selected=true] { color: var(--fg); border-bottom-color: var(--accent); }
.tabs [role=tab]:hover { color: var(--fg); }
.tabs [role=tab]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.panel-title { display: none; }               /* shown only without JavaScript */
.no-js .panel-title { display: block; }
.tz-note { font-family: var(--sans); font-size: .85rem; color: var(--muted); margin: .5rem 0 0; }

/* ---------- talk list (table-like rows) ---------- */
.list { margin: .6rem 0 2rem; }
.list-head, .talk > summary {
  display: grid; grid-template-columns: 9.2rem 12rem minmax(0, 1fr) 3.4rem; gap: 1rem; align-items: baseline;
}
.list-head {
  font: 600 .78rem/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
  padding: .8rem .6rem .6rem; border-bottom: 1px solid var(--rule);
}
.talk { border-bottom: 1px solid var(--rule); }
.talk > summary { list-style: none; cursor: pointer; padding: .75rem .6rem; border-radius: 4px; }
.talk > summary::-webkit-details-marker { display: none; }
.talk > summary:hover { background: var(--hover); }
.talk[open] > summary { background: var(--hover); }
.when { font: .9rem/1.4 var(--sans); color: var(--muted); font-variant-numeric: tabular-nums; }
.who { font-weight: 600; }
.what { color: var(--accent); }
.what .tba { color: var(--muted); font-style: italic; }
.badges { display: grid; grid-template-columns: 1.6rem 1.1rem; gap: .3rem; justify-items: end; }
.badge {
  font: 600 .65rem/1 var(--sans); padding: .25rem .35rem; border-radius: 3px;
  background: var(--accent-soft); color: var(--accent);
}
.detail { padding: .3rem .6rem 1.4rem calc(9.2rem + 1.6rem); }
.speaker-line { margin: .2rem 0 .6rem; font-family: var(--sans); font-size: .95rem; }
.links { display: flex; flex-wrap: wrap; gap: .5rem; margin: .4rem 0 .8rem; }
.btn {
  font: 600 .85rem/1 var(--sans); text-decoration: none; padding: .45rem .75rem;
  border: 1px solid var(--accent); border-radius: 4px;
}
.btn small { font-weight: 400; opacity: .75; margin-left: .2rem; }
.btn:hover { background: var(--accent); color: var(--bg); }
.note { font-style: italic; color: var(--muted); margin: .3rem 0; }
.abstract p { margin: .55rem 0; }
.abstract ul { margin: .4rem 0; padding-left: 1.3rem; }
.empty { color: var(--muted); font-style: italic; padding: 1rem .6rem; }

@media (max-width: 860px) {
  .masthead h1 { font-size: 1.6rem; }
  .list-head { display: none; }
  .talk > summary { grid-template-columns: 1fr auto; gap: .1rem .8rem; padding: .8rem .2rem; }
  .when { grid-column: 1; }
  .badges { grid-column: 2; grid-row: 1; }
  .who, .what { grid-column: 1 / -1; }
  .detail { padding: .2rem .2rem 1.2rem; }
}

.foot { max-width: 76rem; margin: 0 auto; padding: 1rem 1.25rem 3rem; font: .8rem var(--sans); color: var(--muted); }
mjx-container { overflow-x: auto; overflow-y: hidden; max-width: 100%; }