.physics-hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
}

.physics-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
  gap: var(--space-8);
  align-items: center;
}

@media (max-width: 900px) {
  .physics-hero__inner {
    grid-template-columns: minmax(0, 1fr);
  }
}

.physics-hero__eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.physics-hero__title {
  margin-bottom: var(--space-3);
}

.physics-hero__subtitle {
  max-width: 40rem;
}

.physics-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.physics-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.physics-hero__media {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.physics-hero__figure {
  height: 100%;
}

.physics-hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.physics-nav__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.physics-nav__chip {
  border-radius: var(--radius-full);
  border: 1px solid rgba(69, 255, 140, 0.4);
  padding: 0.4rem 0.9rem;
  background: rgba(5, 6, 8, 0.85);
  color: var(--color-text-soft);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.physics-nav__chip:hover {
  background: rgba(12, 15, 19, 0.95);
  border-color: rgba(168, 85, 255, 0.7);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.physics-nav__chip:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.physics-article {
  margin-bottom: var(--space-4);
}

.physics-article__header {
  margin-bottom: var(--space-5);
}

.physics-article__label-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.physics-article__body {
  align-items: flex-start;
}

.physics-article--reverse .physics-article__body {
  direction: rtl;
}

.physics-article--reverse .physics-article__body > * {
  direction: ltr;
}

.physics-article__text {
  font-size: var(--font-size-md);
}

.physics-article__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.physics-article__figure {
  height: 100%;
}

.physics-article__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.physics-article__side {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.physics-article__side--stack {
  align-self: stretch;
}

.physics-article__stat-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.physics-article__stat p,
.physics-article__note p {
  margin-bottom: 0;
}

.physics-article__note {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(69, 255, 140, 0.08), rgba(77, 163, 255, 0.08));
  border: 1px solid rgba(69, 255, 140, 0.4);
}

.physics-article__note .btn {
  margin-top: var(--space-3);
}

.physics-article__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

@media (max-width: 768px) {
  .physics-article__body {
    display: block;
  }
  .physics-article--reverse .physics-article__body {
    direction: ltr;
  }
  .physics-article__media {
    margin-bottom: var(--space-4);
  }
}

.physics-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at 0 0, rgba(168, 85, 255, 0.32), transparent 55%), radial-gradient(circle at 100% 100%, rgba(69, 255, 140, 0.18), transparent 55%), rgba(5, 6, 8, 0.96);
}

.physics-cta__content {
  max-width: 40rem;
}

.physics-cta__content p {
  margin-bottom: 0;
}

.physics-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .physics-cta__inner {
    padding: var(--space-4);
  }
}