.hero-card {
  background: var(--card-bg);
  border-radius: var(--layer-radius-2xl);
  padding: clamp(2.25rem, 6vw, 3.75rem);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  position: relative;
  transition: padding 0.35s ease, border-radius 0.35s ease,
    box-shadow 0.35s ease, transform 0.35s ease, max-width 0.35s ease;
}

.hero-lede {
  margin-bottom: 2rem;
  display: grid;
  gap: 1.5rem;
}

.pillars {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pillars li {
  padding: 0.4rem 0.85rem;
  border-radius: var(--layer-radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-color);
  background: color-mix(in srgb, var(--accent-color) 12%, white 88%);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  text-align: left;
}

.hero-meta article {
  background: color-mix(in srgb, var(--card-bg) 85%, rgba(255, 255, 255, 0.7) 15%);
  border-radius: var(--layer-radius-md);
  padding: 1rem 1.2rem;
  box-shadow: 0 12px 28px color-mix(in srgb, var(--shadow-color) 70%, transparent 30%);
}

.hero-meta h2 {
  font-size: 1rem;
  margin: 0 0 0.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--text-color) 75%, #40516b);
}

.hero-meta p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.hero-toggle {
  position: absolute;
  top: clamp(1rem, 3vw, 1.5rem);
  right: clamp(1rem, 3vw, 1.5rem);
  padding: 0.55rem 1.2rem;
  border-radius: var(--layer-radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(17, 25, 40, 0.65);
  color: #ecf6ff;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease,
    color 0.2s ease;
}

.hero-toggle:hover,
.hero-toggle:focus-visible {
  background: rgba(0, 228, 255, 0.25);
  border-color: rgba(0, 228, 255, 0.6);
  transform: translateY(-1px);
  outline: none;
}

.hero-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.hero-card.is-collapsed {
  max-width: none;
  padding: 0.4rem 0.5rem;
  border-radius: var(--layer-radius-sm);
  box-shadow: var(--layer-shadow-float);
  text-align: center;
  display: inline-flex;
  flex-direction: row;
  gap: 0;
  align-items: center;
  position: fixed;
  bottom: clamp(1rem, 4vw, 2rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
}

.hero-card.is-collapsed .hero-lede,
.hero-card.is-collapsed .hero-meta {
  display: none;
}

.hero-card.is-collapsed .hero-controls {
  display: none;
}

.hero-card.is-collapsed .hero-controls .cta {
  display: none;
}

.hero-card.is-collapsed .hero-toggle {
  position: static;
  transform: none;
  align-self: center;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 1rem;
}

.hero-card.is-collapsed .hero-toggle:hover,
.hero-card.is-collapsed .hero-toggle:focus-visible {
  transform: none;
}

body.hero-collapsed main > *:not(.hero-card) {
  display: none;
}

body.hero-collapsed .site-header {
  display: none;
}

body.hero-collapsed .motion-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body.hero-collapsed .lambda-control {
  display: inline-flex;
}

@media (max-width: 900px) {
  .hero-card {
    padding: clamp(2rem, 5vw, 3rem);
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-controls {
    flex-direction: column;
  }

  .hero-toggle {
    top: 1rem;
    right: 1rem;
  }

  .hero-card.is-collapsed {
    left: auto;
    right: 1rem;
    transform: none;
  }

  body.hero-collapsed main > *:not(.hero-card) {
    display: none;
  }
}