.hub{color:#172639;background:#f4f6f8;flex-direction:column;min-height:100svh;display:flex}.hub-header,.hub-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.5rem;padding:1.5rem max(5%,50vw - 640px);display:flex}.hub-header{letter-spacing:.04em;background:#fff;border-bottom:1px solid #cbd4dd;font-size:.875rem}.hub-brand{letter-spacing:.1em;font-size:1.4rem;font-weight:800;text-decoration:none}.hub-brand span{color:#b63e2b}.hub-main{flex:1;width:90%;max-width:1280px;margin:0 auto;padding:3.5rem 0 2rem}.hub-main h1{max-width:18ch;margin-bottom:1rem;font-size:clamp(2.4rem,4.5vw,4rem)}.hub-intro{color:#52677c;margin-bottom:2rem;font-size:1.125rem}.hub-doors{grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem;display:grid}.hub-door{background:#fff;border:1px solid #c6d1db;border-top:4px solid #b63e2b;flex-direction:column;align-items:flex-start;min-width:0;padding:1.75rem;text-decoration:none;transition:box-shadow .15s,border-color .15s;display:flex}:is(.hub-door:hover,.hub-door:focus-visible){border-color:#172639;box-shadow:0 8px 24px #17263914}.hub-door>svg{color:#8d392b;margin-bottom:2rem}.hub-door-kind{letter-spacing:.06em;color:#52677c;margin-bottom:.75rem;font-size:.875rem;font-weight:700}.hub-door h2{margin-bottom:.75rem;font-size:2rem}.hub-door p{color:#52677c;margin-bottom:2rem;line-height:1.6}.hub-door-action{flex-wrap:wrap;align-items:center;gap:.75rem;margin-top:auto;font-weight:700;display:flex}.hub-door-intranet{border-top-color:#234e68}.hub-door-intranet>svg{color:#234e68}.hub-door-exercises{border-top-color:#a76313}.hub-door-exercises>svg{color:#a76313}.hub-guidance{border-left:3px solid #bccbd7;max-width:800px;margin-top:2rem;padding-left:1.25rem}.hub-guidance h2{letter-spacing:0;margin-bottom:.4rem;font-size:1rem;line-height:1.5}.hub-guidance p{color:#52677c;margin:0}.hub-footer{color:#52677c;border-top:1px solid #cbd4dd;font-size:.875rem}.surface-nav{flex-wrap:wrap;align-items:center;gap:1.1rem;font-size:.95rem;display:flex}.surface-nav [aria-current=page]{text-underline-offset:6px;font-weight:700;text-decoration:underline}.presentation-shell{color:#fff;background:#172639;min-height:100svh}.presentation-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 4%;display:flex}.presentation-toolbar h1{letter-spacing:0;margin:0;font-size:1.3rem;line-height:1.5}.presentation-controls{color:#d3deea;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:.75rem 4%;font-size:.95rem;display:flex}.presentation-controls .actions{margin:0}.presentation-frame{background:#d9d1c6;height:calc(100svh - 170px);min-height:400px}.presentation-frame iframe{border:0;width:100%;height:100%;display:block}.presentation-frame:-webkit-full-screen{height:100vh;min-height:0}.presentation-frame:fullscreen{height:100vh;min-height:0}.presentation-help{margin:0}.presentation-shell [role=alert]{margin:0;padding:1rem 4%}.presentation-login{background:#fff;border:1px solid #cbd6df;width:90%;max-width:650px;margin:3rem auto;padding:2rem}.presentation-login h1{font-size:2.25rem}.presentation-login p{max-width:55ch}@media (max-width:850px){.hub-doors{grid-template-columns:1fr}.hub-door{padding:1.5rem}.hub-door>svg{margin-bottom:1rem}.hub-door p{margin-bottom:1.25rem}.hub-main{padding-top:2rem}.presentation-frame{height:65svh;min-height:260px}}@media (prefers-reduced-motion:reduce){.hub-door{transition:none}}