.presentation-section {
  position: relative;
  overflow: hidden;
  padding: 7rem 1.5rem;
  background:
    radial-gradient(720px 360px at 12% 10%, color-mix(in oklab, var(--gold) 20%, transparent), transparent 65%),
    radial-gradient(760px 420px at 88% 28%, color-mix(in oklab, var(--primary) 18%, transparent), transparent 68%),
    var(--background);
}

.presentation-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, color-mix(in oklab, var(--background) 20%, transparent), color-mix(in oklab, var(--secondary) 46%, transparent));
  pointer-events: none;
}

.presentation-wrap {
  position: relative;
  width: min(72rem, 100%);
  margin: 0 auto;
}

.presentation-kicker {
  color: var(--primary);
  font-size: .625rem;
  letter-spacing: .4em;
  text-align: center;
  text-transform: uppercase;
}

.presentation-title {
  margin-top: .75rem;
  color: var(--deep);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 500;
  line-height: 1.05;
  text-align: center;
}

.presentation-divider {
  width: 6rem;
  height: 1px;
  margin: .9rem auto 0;
  background: linear-gradient(90deg, transparent, var(--gold) 50%, transparent);
}

.presentation-subtitle {
  max-width: 42rem;
  margin: 1.25rem auto 0;
  color: var(--muted-foreground);
  font-size: 1rem;
  line-height: 1.7;
  text-align: center;
}

.presentation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3.5rem;
}

.presentation-card {
  display: flex;
  min-height: 12rem;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid color-mix(in oklab, var(--border) 80%, transparent);
  border-radius: 1.25rem;
  background: linear-gradient(145deg, color-mix(in oklab, var(--card) 92%, transparent), color-mix(in oklab, var(--secondary) 54%, transparent));
  box-shadow: var(--shadow-soft);
  padding: 1.25rem;
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.presentation-card:hover,
.presentation-card:focus-visible {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--gold) 62%, var(--border));
  box-shadow: var(--shadow-luxe);
  outline: none;
}

.presentation-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
}

.presentation-session {
  border-radius: 999px;
  background: color-mix(in oklab, var(--gold-soft) 58%, transparent);
  color: color-mix(in oklab, var(--deep) 82%, black);
  font-size: .625rem;
  font-weight: 700;
  letter-spacing: .2em;
  padding: .35rem .65rem;
  text-transform: uppercase;
}

.presentation-file {
  color: var(--primary);
  font-size: .75rem;
  font-weight: 700;
}

.presentation-card h3 {
  margin-top: 1.1rem;
  color: var(--deep);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.16;
}

.presentation-card p {
  margin-top: .6rem;
  color: var(--muted-foreground);
  font-size: .92rem;
  line-height: 1.55;
}

.presentation-action {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: 1.35rem;
  color: var(--primary);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

@media (max-width: 760px) {
  .presentation-section {
    padding: 5.5rem 1.25rem;
  }

  .presentation-grid {
    grid-template-columns: 1fr;
    margin-top: 2.5rem;
  }
}