/* Human onboarding only: no 3D or scoring dependencies. */
.onboarding .hero-panel { min-height: 440px; }
.onboarding .hero-panel h1 { max-width: 22ch; }
.onboarding .path-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.2rem; }
.onboarding .path-card { min-width: 0; padding: clamp(1.2rem, 3vw, 2rem); border: 1px solid var(--border); border-radius: 20px; background: var(--card-bg); }
.onboarding .path-card h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
.onboarding .path-card p + p { margin-top: .8rem; }
.onboarding .path-card .actions { margin-top: 1.2rem; }
.onboarding .route-note { color: var(--muted); margin-top: 1rem; }
.onboarding .notice { padding: 1.2rem; border: 1px dashed var(--accent2); border-radius: 12px; background: #122c1d; margin: 1.2rem 0; }
.onboarding .guide-list { padding-left: 1.5rem; display: grid; gap: .8rem; }
.onboarding .guide-list li { padding-left: .25rem; }
.onboarding .guide-index { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.2rem 0; }
.onboarding details { min-width: 0; border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.2rem; margin: .8rem 0; }
.onboarding summary { cursor: pointer; font-weight: 700; color: var(--text); }
.onboarding details[open] summary { margin-bottom: 1rem; }
.onboarding details p + p { margin-top: .8rem; }
.onboarding summary:focus-visible, .onboarding a:focus-visible, .onboarding button:focus-visible { outline: 3px solid var(--accent2); outline-offset: 4px; }
.onboarding code, .onboarding dd, .onboarding .snippet, .onboarding .route-note { overflow-wrap: anywhere; }
.onboarding .step-grid > *, .onboarding .world-grid > * { min-width: 0; }
.onboarding .snippet { max-width: 100%; white-space: pre-wrap; }
.onboarding [id] { scroll-margin-top: 11rem; }
.onboarding .source-note { margin-top: 1rem; color: var(--muted); font-size: .86rem; }
@media (max-width: 640px) {
  .onboarding .path-grid, .onboarding .step-grid, .onboarding .world-grid { grid-template-columns: minmax(0, 1fr); }
  .onboarding .hero-panel { min-height: 0; padding-top: 2.5rem; }
  .onboarding .section { padding: 2rem 0; }
}
@media (prefers-reduced-motion: reduce) { html:has(body.onboarding) { scroll-behavior: auto; } }