:root {
  color-scheme: dark;
  --ink: #f3f0e8;
  --muted: #aaa9a4;
  --quiet: #777873;
  --paper: #101311;
  --paper-raised: #171a17;
  --line: rgba(243, 240, 232, 0.15);
  --acid: #c9ff69;
  --violet: #b7a8ff;
  --sky: #75cbea;
  --coral: #ff8f72;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 76% 13%, rgba(117, 203, 234, 0.07), transparent 25rem),
    radial-gradient(circle at 24% 34%, rgba(183, 168, 255, 0.055), transparent 31rem),
    var(--paper);
  font-family: var(--sans);
}

a {
  color: inherit;
}

main {
  width: min(1380px, calc(100% - 48px));
  margin: 0 auto;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 108px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.wordmark small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.23em;
}

.wordmarkMark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--acid);
  font-family: var(--serif);
  font-size: 13px;
  font-style: italic;
}

.edition,
.eyebrow,
.cardMeta,
.count {
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  min-height: 570px;
  padding: 112px 0 88px;
  overflow: hidden;
}

.hero h1 {
  position: relative;
  z-index: 1;
  max-width: 1020px;
  margin: 25px 0 28px;
  font-family: var(--serif);
  font-size: clamp(58px, 8vw, 126px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.87;
}

.hero h1 em {
  color: var(--acid);
  font-weight: 400;
}

.heroCopy {
  position: relative;
  z-index: 1;
  width: min(620px, 58%);
  margin: 0 0 0 auto;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.5;
}

.heroSignal {
  position: absolute;
  top: 74px;
  right: 5%;
  width: 390px;
  height: 390px;
  opacity: 0.62;
}

.heroSignal i {
  position: absolute;
  inset: calc(var(--n, 0) * 34px);
  border: 1px solid rgba(201, 255, 105, 0.21);
  border-radius: 48% 52% 44% 56% / 54% 41% 59% 46%;
  transform: rotate(calc(var(--n, 0) * 19deg));
}

.heroSignal i:nth-child(1) { --n: 0; }
.heroSignal i:nth-child(2) { --n: 1; }
.heroSignal i:nth-child(3) { --n: 2; }
.heroSignal i:nth-child(4) { --n: 3; }

.heroSignal b {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 42px 12px rgba(201, 255, 105, 0.28);
}

.catalogue {
  padding: 80px 0 130px;
  border-top: 1px solid var(--line);
}

.sectionHeading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 42px;
}

.sectionHeading h2 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.count {
  color: var(--acid);
}

.lectureCard {
  display: grid;
  grid-template-columns: minmax(380px, 0.92fr) minmax(440px, 1.08fr);
  min-height: 570px;
  border: 1px solid var(--line);
  background: rgba(23, 26, 23, 0.66);
}

.cardVisual {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(140deg, rgba(183, 168, 255, 0.12), transparent 46%),
    linear-gradient(20deg, rgba(117, 203, 234, 0.09), transparent 50%),
    #0c0e0d;
}

.cardNumber {
  position: absolute;
  top: 27px;
  left: 30px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.modalityField {
  position: absolute;
  inset: 12%;
}

.world {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 142px;
  height: 142px;
  place-items: center;
  border: 1px solid rgba(201, 255, 105, 0.6);
  border-radius: 50%;
  color: var(--acid);
  font-family: var(--serif);
  font-size: 24px;
  font-style: italic;
  transform: translate(-50%, -50%);
}

.world::before,
.world::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(201, 255, 105, 0.12);
  border-radius: 50%;
}

.world::before { inset: -54px; }
.world::after { inset: -116px; }

.signal {
  position: absolute;
  z-index: 1;
  padding: 9px 13px;
  border: 1px solid currentColor;
  border-radius: 100px;
  background: #101311;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signalVision {
  top: 8%;
  left: 15%;
  color: var(--violet);
}

.signalLanguage {
  top: 17%;
  right: 2%;
  color: var(--acid);
}

.signalAudio {
  bottom: 15%;
  left: 4%;
  color: var(--sky);
}

.signalAction {
  right: 8%;
  bottom: 5%;
  color: var(--coral);
}

.trajectory {
  position: absolute;
  right: 8%;
  bottom: 18%;
  width: 43%;
  height: 25%;
  border-bottom: 2px solid var(--coral);
  border-radius: 0 0 70% 0;
  transform: rotate(-10deg);
  filter: drop-shadow(0 0 13px rgba(255, 143, 114, 0.34));
}

.cardBody {
  display: flex;
  flex-direction: column;
  padding: clamp(42px, 6vw, 88px);
}

.cardMeta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.cardMeta span:not(:last-child)::after {
  margin-left: 22px;
  color: var(--quiet);
  content: "·";
}

.courseLine {
  margin: 30px 0 -22px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.09em;
  line-height: 1.5;
  text-transform: uppercase;
}

.courseLine span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.cardBody h3 {
  max-width: 720px;
  margin: 45px 0 14px;
  font-family: var(--serif);
  font-size: clamp(42px, 5.3vw, 78px);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.96;
}

.subtitle {
  margin: 0 0 28px;
  color: var(--acid);
  font-family: var(--serif);
  font-size: 21px;
  font-style: italic;
}

.abstract {
  max-width: 650px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
}

.cardActions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: auto;
  padding-top: 46px;
}

.cardActions a {
  color: var(--muted);
  font-size: 13px;
  text-underline-offset: 5px;
}

.cardActions .primaryAction {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-width: 190px;
  padding: 14px 16px;
  border: 1px solid var(--acid);
  color: var(--acid);
  text-decoration: none;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 150px;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: 12px;
}

footer p {
  margin: 0;
  font-family: var(--serif);
  font-size: 15px;
  font-style: italic;
}

@media (max-width: 900px) {
  main {
    width: min(100% - 30px, 720px);
  }

  .edition {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 76px 0;
  }

  .heroSignal {
    right: -150px;
    opacity: 0.38;
  }

  .heroCopy {
    width: 100%;
    margin-top: 46px;
  }

  .lectureCard {
    grid-template-columns: 1fr;
  }

  .cardVisual {
    min-height: 410px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .cardBody {
    min-height: 590px;
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 52px;
  }

  .sectionHeading {
    align-items: flex-start;
  }

  .cardVisual {
    min-height: 350px;
  }

  .cardBody {
    min-height: 650px;
    padding: 34px 26px;
  }

  .cardBody h3 {
    font-size: 46px;
  }

  .cardActions {
    align-items: flex-start;
    flex-direction: column;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
  }
}

.masthead .sessionLink {
  margin-left: 18px;
  color: color-mix(in srgb, currentColor 45%, transparent);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
}

.masthead .sessionLink:hover {
  color: currentColor;
}