@media (max-width: 834px) {
  .panel-half { grid-column: span 12; }
  .result-grid { grid-template-columns: 1fr; }
  .identity-panel { grid-template-columns: 1fr; }
  .lab-panel { min-height: auto; }
}

@media (max-width: 640px) {
  .page-shell { width: min(var(--maxw), calc(100% - 24px)); }
  .hero-stage { padding: 12px 0 20px; min-height: auto; }
  .hero-topline {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 18px;
  }
  .hero-display { font-size: 48px; }
  .hero-subtitle { margin-top: 14px; font-size: 18px; }
  .brand-eyebrow { font-size: 18px; }
  .panel { padding: 20px; border-radius: 24px; }
  .panel-heading h3,
  .featured-title,
  .identity-value,
  .result-badge strong { font-size: 24px; }
  .identity-quote { font-size: 20px; }
}