:root {
  --text: #111;
  --muted: #555;
  --mutedhover: #777;
  --line: #bbb;
  --link: #0645ad;
  --csbd: #b79301;
  --max-width: 740px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

nav a {
  color: var(--muted);
}

nav a:hover {
  color: var(--mutedhover);
  text-decoration: none;
}

a {
  color: var(--link);
  text-decoration: none;
  text-underline-offset: .12em;
}

.csbd {
  color: var(--csbd);
}

a:hover,
a:focus {
  text-decoration: underline;
}

.site-header,
main,
footer {
  width: min(calc(100% - 2rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  padding: 2rem 0 .85rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.site-name {
  color: var(--text);
  font-weight: bold;
  text-decoration: none;
}

.site-name:hover {
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1rem;
}

.hero {
  padding: 1.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 .4rem;
  color: var(--muted);
  font-size: .9rem;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  margin: 0;
  font-size: 2.1rem;
}

h2 {
  margin: 0;
  font-size: 1.5rem;
}

h3 {
  margin: 0;
  font-size: 1.12rem;
}

.hero-intro {
  margin: 0 0 0;
}

.facts {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: .35rem 0;
  margin: 1.25rem 0 0;
}

.facts dt {
  font-weight: bold;
}

.facts dd {
  margin: 0;
}

.talk-section {
  padding: 2.25rem 0 0;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  margin-bottom: .75rem;
}

.section-heading .eyebrow {
  display: none;
}

.season {
  margin-top: 0;
}

.season-summary {
  width: 100%;
  padding-bottom: .75rem;
  color: var(--text);
}

.season-summary h2 {
  display: inline;
}

.season-summary:hover {
  text-decoration: none;
}

.talk-card {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: 1.2rem 0;
  border-top: 1px dotted var(--line);
}

.talk-content {
  min-width: 0;
}

.talk-date {
  padding-top: .1rem;
  color: var(--muted);
  font-size: .9rem;
  font-weight: normal;
  font-variant-numeric: tabular-nums;
}

.talk-speaker {
  margin: 0 0 .15rem;
  font-weight: bold;
  font-size: 1.12rem;
}

.talk-speaker span {
  margin-left: .35rem;
  color: var(--muted);
  font-size: 1rem;
  font-weight: normal;
}

.talk-card h3 {
  font-style: italic;
  font-weight: normal;
}

.talk-note {
  margin: .35rem 0 0;
  color: var(--muted);
  font-size: .9rem;
}

details {
  margin-top: .55rem;
}

summary {
  width: max-content;
  color: var(--muted);
  cursor: pointer;
  text-underline-offset: .12em;
}

summary:hover {
  text-decoration: none;
}

details p {
  margin: .65rem 0 0;
  font-size: .95rem;
}

.section-note {
  margin: .5rem 0 1.5rem;
}

.empty-state,
.about p:not(.eyebrow),
footer {
  color: var(--muted);
}

.about {
  padding: 2.25rem 0;
}

.no-break {
  white-space: nowrap;
}

.about p {
  margin: .65rem 0 0;
}

p.hero-intro {
  margin: 0 0 0.5rem;
}

footer {
  padding: 2rem 0 2.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: .9rem;
}

footer p {
  margin: 0;
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .site-header {
    display: block;
    padding-block: 1rem .75rem;
  }

  h1 {
    font-size: 2.1rem;
  }

  nav {
    margin-top: .45rem;
    gap: .8rem;
    flex-wrap: wrap;
    font-size: .95rem;
  }

  .hero {
    padding: 1.5rem 0;
  }

  .facts {
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 1rem;
  }

  .facts dt {
    margin-top: .5rem;
  }

  .facts dt:first-child {
    margin-top: 0;
  }

  .facts dd {
    margin: 0;
  }


  .talk-section {
    padding: 1.75rem 0;
  }

  .talk-card {
    grid-template-columns: 3.75rem minmax(0, 1fr);
    gap: .65rem;
    padding: 1rem 0;
  }

  .talk-speaker {
    display: flex;
    flex-wrap: wrap;
    column-gap: .35rem;
    align-items: baseline;
  }

  .talk-speaker span {
    margin-left: 0;
  }

  details p {
    overflow-wrap: anywhere;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}