@font-face {
  font-family: "Inter Variable";
  src: url("fonts/InterVariable.woff2?v=4.1") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #0b0f0e;
  --surface: #111816;
  --surface-raised: #151e1b;
  --ink: #eee8d8;
  --soft: #bdb7a8;
  --muted: #8c887d;
  --rule: #2a332f;
  --gold: #d3ae58;
  --accent: #61b8a5;
  --title-green: #a9e3c4;
  --focus: #d3ae58;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter Variable", Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page: 1180px;
  --reading: 760px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  font-family: var(--sans);
  font-optical-sizing: auto;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html {
  overflow-x: clip;
  color: var(--soft);
  background: var(--bg);
}
body {
  margin: 0;
  min-width: 320px;
  color: var(--soft);
  background:
    url("./ascii-atmosphere.svg") center top 1.5rem / min(100vw, 90rem) auto repeat-y,
    radial-gradient(circle at 88% -8%, rgb(211 174 88 / 10%), transparent 34rem),
    var(--bg);
  font-size: 16px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-underline-offset: .18em; }
.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 99;
  transform: translateY(-180%);
  padding: .6rem .85rem;
  color: #09110f;
  background: var(--accent);
  border-radius: .35rem;
}
.skip-link:focus { transform: none; }
.shell { width: min(calc(100% - 40px), var(--page)); margin-inline: auto; }
h1, h2, h3, p { text-wrap: pretty; }
h1, h2 { color: var(--ink); font-family: var(--serif); font-weight: 500; }
h1 { margin: 0; font-size: clamp(2.8rem, 7vw, 6.6rem); line-height: .94; letter-spacing: -.045em; }
h2 { margin: 0 0 1.8rem; font-size: clamp(2rem, 4.8vw, 4.1rem); line-height: 1; letter-spacing: -.035em; }
h3 { margin: 0; color: var(--ink); font-size: 1.18rem; line-height: 1.28; letter-spacing: -.018em; }

.landing { padding-block: 1rem 6rem; }
.event-header { padding-block: clamp(3.8rem, 8vw, 7.5rem) clamp(3rem, 6vw, 5.5rem); }
.event-header h1 { max-width: none; color: var(--title-green); white-space: nowrap; font-size: clamp(3.025rem, 5.17vw, 4.5375rem); }
.session-list { display: grid; gap: clamp(4rem, 8vw, 7rem); }
.session-heading {
  margin: 0 0 1.4rem;
  padding-top: clamp(1rem, 2.5vw, 1.5rem);
  border-top: 1px solid var(--rule);
  font-size: clamp(1.65rem, 3vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -.025em;
}
.session-number { color: var(--title-green); }
.session-separator { margin-inline: .45rem; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.presentation-card {
  position: relative;
  min-height: 18rem;
  padding: 1.5rem 1.5rem 3.8rem;
  border: 1px solid var(--rule);
  border-radius: 1rem;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: .8rem;
  transition: transform 150ms var(--ease-out), border-color 150ms ease, background-color 150ms ease;
}
.presentation-card:active { transform: scale(.985); }
.presentation-card:focus-within { outline: 3px solid var(--focus); outline-offset: 3px; }
.card-hit { position: absolute; inset: 0; z-index: 1; border-radius: inherit; }
.presentation-card h3, .presentation-card .premise { pointer-events: none; }
.premise { margin: 0; color: var(--soft); line-height: 1.55; }
.presenters { margin: auto 0 0; color: var(--ink); font-size: .93rem; }
.presenters-label { color: var(--muted); }
.presenter-link { position: relative; z-index: 2; color: var(--ink); font-weight: 650; text-decoration-color: rgb(97 184 165 / 42%); }
.card-project-links {
  position: absolute;
  right: 1.25rem;
  bottom: 1.1rem;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: .65rem;
}
.card-project-link {
  display: grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  color: var(--muted);
  text-decoration: none;
  transition: transform 150ms var(--ease-out), color 150ms ease;
}
.card-project-link .project-link-icon { width: 1.2rem; height: 1.2rem; }
.card-project-link:active { transform: scale(.94); }
.card-project-link:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; border-radius: .25rem; }

.presentation { padding-bottom: 7rem; }
.page-tools {
  position: sticky;
  top: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .75rem;
  min-height: 3.75rem;
  padding-block: .55rem;
  border-bottom: 1px solid rgb(42 51 47 / 82%);
  background: rgb(11 15 14 / 90%);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}
.reading-progress {
  position: absolute;
  right: 50%;
  bottom: -1px;
  width: 100vw;
  height: 2px;
  overflow: hidden;
  transform: translateX(50%);
  pointer-events: none;
}
.reading-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--accent);
}
.page-jumps {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: .15rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-jumps::-webkit-scrollbar { display: none; }
.page-jumps a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  padding: .4rem .55rem;
  border-radius: .45rem;
  color: var(--muted);
  font: 600 .7rem/1 var(--mono);
  text-decoration: none;
  white-space: nowrap;
  transition: color 150ms ease, background-color 150ms ease, transform 150ms var(--ease-out);
}
.back {
  display: inline-flex;
  height: 2.5rem;
  align-items: center;
  gap: .5rem;
  padding-inline: .7rem;
  border-radius: .55rem;
  color: var(--ink);
  text-decoration: none;
  font: 650 .72rem/1 var(--mono);
  line-height: 1;
  transition: transform 150ms var(--ease-out), color 150ms ease, background-color 150ms ease;
}
.back > span[aria-hidden="true"] { font: 400 1.25rem/1 var(--sans); }
.back:active { transform: scale(.97); }
.page-jumps a:active { transform: scale(.97); }
.project-links { display: flex; flex: 0 1 auto; flex-wrap: nowrap; justify-content: flex-end; gap: .4rem; }
.project-link {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: .65rem;
  color: var(--muted);
  text-decoration: none;
  transition: transform 150ms var(--ease-out), border-color 150ms ease, color 150ms ease, background-color 150ms ease;
}
.project-link:active { transform: scale(.97); }
.project-link-icon { width: 1.05rem; height: 1.05rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.presentation-header { padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.presentation-header h1 { max-width: 16ch; overflow-wrap: anywhere; font-size: clamp(1.96rem, 4.9vw, 4.62rem); }
.lede { max-width: var(--reading); margin: 1.25rem 0 0; color: var(--soft); font-size: clamp(1.02rem, 1.8vw, 1.24rem); line-height: 1.55; }
.presentation-header .presenters { margin-top: 1.3rem; }
.talk-duration {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1.25rem;
  margin: .75rem 0 0;
  color: var(--muted);
  font: 500 .72rem/1.5 var(--mono);
}
.talk-duration span { position: relative; }
.talk-duration span + span::before { content: "·"; position: absolute; left: -.75rem; color: #4a554f; }

.media-section { margin: 0 0 clamp(3.2rem, 6vw, 5.4rem); scroll-margin-top: 4.5rem; }
.compact-video { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 1rem; background: #070909; }
video { display: block; width: 100%; max-height: 75vh; border: 1px solid var(--rule); background: #000; }
.media-links { display: flex; align-items: center; flex-wrap: wrap; gap: .75rem 1rem; margin-top: .75rem; }
.media-links a, .transcript-slides { color: var(--accent); }
.media-links .slides-link {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  line-height: inherit;
  text-decoration: none;
}

.content-section { padding-block: clamp(3.2rem, 6vw, 5.4rem); scroll-margin-top: 4.5rem; border-top: 1px solid var(--rule); }
.editorial-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--rule); background: var(--rule); }
.editorial-card { padding: 1.5rem; background: var(--surface); }
.editorial-card p { margin: .65rem 0 0; color: var(--soft); line-height: 1.62; }
.mechanism-grid, .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.legacy-section-anchor { display: block; height: 0; scroll-margin-top: 4.5rem; }
.prose { max-width: var(--reading); }
.prose p { color: var(--soft); font-family: var(--serif); font-size: 1.12rem; line-height: 1.76; }
.prose h2:not(:first-child) { margin-top: 3.5rem; }
.transcript { width: 100%; }
.transcript > h2 { margin-bottom: .65rem; }
.slides-visibility-toggle {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: .65rem;
  margin: 0 0 clamp(2.25rem, 4vw, 3.25rem);
  padding: .35rem .25rem;
  border: 0;
  border-radius: .45rem;
  background: transparent;
  color: var(--muted);
  font: 600 .72rem/1 var(--mono);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color 150ms ease;
}
.slides-visibility-toggle[hidden] { display: none; }
.slides-visibility-toggle__switch {
  position: relative;
  width: 2rem;
  height: 1.125rem;
  flex: none;
  border: 1px solid #3c4843;
  border-radius: 999px;
  background: #202724;
  transition: transform 120ms var(--ease-out), border-color 150ms ease, background-color 150ms ease;
}
.slides-visibility-toggle:active .slides-visibility-toggle__switch { transform: scale(.96); }
.slides-visibility-toggle__thumb {
  position: absolute;
  top: .125rem;
  left: .125rem;
  width: .75rem;
  height: .75rem;
  border-radius: 50%;
  background: #a9b1ad;
  box-shadow: 0 1px 2px rgb(0 0 0 / 35%);
  transform: translateX(0);
  transition: transform 160ms var(--ease-out), background-color 150ms ease;
}
.slides-visibility-toggle[aria-checked="true"] .slides-visibility-toggle__switch {
  border-color: rgb(97 184 165 / 75%);
  background: rgb(97 184 165 / 22%);
}
.slides-visibility-toggle[aria-checked="true"] .slides-visibility-toggle__thumb {
  background: var(--accent);
  transform: translateX(.875rem);
}
.transcript-body { max-width: var(--reading); font-family: var(--serif); font-size: 1.08rem; line-height: 1.78; }
.transcript-body p { margin: 0 0 1.2em; }
.illustrated-transcript { max-width: none; }
.transcript-intro, .transcript-slide-copy { max-width: var(--reading); }
.transcript-intro { margin-bottom: clamp(3rem, 6vw, 5rem); }
.transcript-slide-block { margin-bottom: clamp(3.75rem, 7vw, 6.5rem); }
.transcript-slide-block:last-child { margin-bottom: 0; }
.transcript-slide { width: min(100%, 60rem); margin: 0 0 clamp(1.5rem, 3vw, 2.25rem); }
.transcript-slide[hidden] { display: none; }
.illustrated-transcript-section.slides-are-hidden .transcript-slide-block { margin-bottom: 0; }
.transcript-slide picture { display: block; }
.transcript-slide img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--rule);
  border-radius: 1rem;
  background: #070909;
  box-shadow: 0 1.5rem 4rem rgb(0 0 0 / 18%);
  object-fit: contain;
}
.transcript-slide-copy:empty { display: none; }

.error { padding-top: 20vh; }
.error h1 { font-size: clamp(2.4rem, 7vw, 5rem); }
.error p { color: var(--muted); }
a:focus-visible, button:focus-visible, video:focus-visible, iframe:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

@media (hover: hover) and (pointer: fine) {
  .presentation-card:hover { transform: translateY(-3px); border-color: #3d4a45; background: var(--surface-raised); }
  .presenter-link:hover, .slides-link:hover { color: var(--accent); }
  .back:hover { color: var(--accent); background: var(--surface-raised); transform: translateX(-2px); }
  .page-jumps a:hover { color: var(--ink); background: var(--surface-raised); }
  .project-link:hover { border-color: var(--accent); color: var(--ink); background: var(--surface-raised); }
  .card-project-link:hover { color: var(--ink); transform: translateY(-1px); }
  .slides-visibility-toggle:hover { color: var(--accent); }
}

@media (max-width: 820px) {
  .card-grid, .editorial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-tools { gap: .35rem; }
  .back { width: 2.5rem; justify-content: center; padding-inline: 0; }
  .back-label { display: none; }
  .page-jumps { justify-content: flex-start; }
  .page-tools .project-link { display: none; }
  .page-tools .project-link:last-child { display: grid; }
}

@media (max-width: 560px) {
  body {
    background-position: center top 1.5rem, 88% -8%;
    background-repeat: repeat-y, no-repeat;
    background-size: 55rem auto, auto;
  }
  .shell { width: min(100% - 24px, var(--page)); }
  .landing { padding-bottom: 4rem; }
  .event-header { padding-block: 3rem 2.5rem; }
  .event-header h1 { font-size: clamp(1.6rem, 8vw, 2.8rem); letter-spacing: -.055em; }
  .session-list { gap: 3.75rem; }
  .session-heading { margin-bottom: 1rem; font-size: clamp(1.5rem, 7vw, 2rem); }
  .card-grid, .editorial-grid, .mechanism-grid, .summary-grid { grid-template-columns: 1fr; }
  .presentation-card { min-height: 14rem; }
  .presentation-header { padding-block: 2.6rem 3rem; }
  .media-section { margin-inline: -12px; }
  video { border-inline: 0; }
  .media-links { margin-inline: 12px; }
  .content-section { padding-block: 3.5rem; }
  .transcript-slide { margin-inline: -1px; }
  .page-jumps a { padding-inline: .45rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}

@media (forced-colors: active), (prefers-contrast: more) {
  body { background-image: radial-gradient(circle at 88% -8%, rgb(211 174 88 / 10%), transparent 34rem); }
}