:root{--brand:#185fa5;--brand-deep:#042c53;--brand-contrast:#ffffff;--hero-start:#e6f1fb;--hero-end:#b5d4f4;--bg:#ffffff;--bg-alt:#f8f8f7;--bg-info:#e6f1fb;--text:#000000;--text-2:#5a5a5a;--text-3:#8a8a8a;--text-info:#185fa5;--border:rgba(0,0,0,0.15);--border-strong:rgba(0,0,0,0.3);--s-xs:4px;--s-sm:8px;--s-md:12px;--s-lg:16px;--s-xl:20px;--s-2xl:24px;--s-3xl:40px;--s-4xl:64px;--radius:8px;--radius-lg:12px;--container:1080px;--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}@media (prefers-color-scheme:dark){:root{--brand:#7fb4ec;--brand-deep:#b5d4f4;--brand-contrast:#06213c;--hero-start:#14304a;--hero-end:#1b1b1d;--bg:#1b1b1d;--bg-alt:#121214;--bg-info:#14304a;--text:#f5f5f5;--text-2:#b5b5b5;--text-3:#8a8a8a;--text-info:#7fb4ec;--border:rgba(255,255,255,0.15);--border-strong:rgba(255,255,255,0.3)}}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font);font-size:17px;line-height:1.6;color:var(--text);background:var(--bg);overflow-wrap:break-word}h1,h2,h3{line-height:1.25;margin:0 0 var(--s-lg);letter-spacing:-0.01em}h1{font-size:clamp(1.75rem,1.3rem + 2vw,2.6rem)}h2{font-size:clamp(1.35rem,1.1rem + 1vw,1.75rem)}h3{font-size:1.1rem}p{margin:0 0 var(--s-lg)}a{color:var(--text-info);text-decoration-thickness:1px;text-underline-offset:2px}a:hover{text-decoration:none}img{max-width:100%;height:auto}:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:var(--s-xs)}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--s-lg)}.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:var(--brand-contrast);padding:var(--s-sm) var(--s-lg);z-index:10}.skip-link:focus{left:0}.site-header{border-bottom:1px solid var(--border);background:var(--bg)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s-lg);min-height:60px}.brand{font-weight:700;font-size:1.1rem;color:var(--text);text-decoration:none;white-space:nowrap}.brand:hover{color:var(--text-info)}.nav-toggle{display:inline-flex;align-items:center;gap:var(--s-sm);background:none;border:1px solid var(--border-strong);border-radius:var(--radius);color:inherit;font:inherit;padding:var(--s-sm) var(--s-md);cursor:pointer}.site-nav{display:none}.site-nav[data-open="true"]{display:block;position:absolute;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:var(--s-md) var(--s-lg) var(--s-xl);z-index:5}.site-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--s-md)}.site-nav a{color:var(--text);text-decoration:none;font-weight:500}.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--text-info)}@media (min-width:700px){.nav-toggle{display:none}.site-nav,.site-nav[data-open="true"]{display:block;position:static;border:0;padding:0}.site-nav ul{flex-direction:row;gap:var(--s-2xl)}}main{display:block}.section{padding-block:var(--s-3xl)}.section--alt{background:var(--bg-alt)}.section__head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s-lg);flex-wrap:wrap}.lead{font-size:1.1rem;color:var(--text-2);max-width:60ch}.muted{color:var(--text-2)}.hero{background:linear-gradient(160deg,var(--hero-start),var(--hero-end));padding-block:var(--s-4xl)}.hero h1{max-width:18ch}.hero p{max-width:55ch;font-size:1.15rem;color:var(--text-2)}@media (prefers-color-scheme:dark){.hero p{color:var(--text)}}.hero__actions{display:flex;flex-wrap:wrap;gap:var(--s-md);margin-top:var(--s-2xl)}.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--s-sm);padding:var(--s-md) var(--s-2xl);border:1px solid transparent;border-radius:var(--radius);font-weight:600;text-decoration:none;cursor:pointer;font-size:1rem;font-family:inherit;min-height:48px}.button--primary{background:var(--brand);color:var(--brand-contrast)}.button--primary:hover{background:var(--brand-deep);color:var(--brand-contrast)}.button--secondary{background:transparent;border-color:var(--border-strong);color:var(--text)}.button--secondary:hover{border-color:var(--brand);color:var(--text-info)}.breadcrumb{padding-block:var(--s-lg) 0;font-size:0.9rem;color:var(--text-2)}.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:var(--s-sm);margin:0;padding:0}.breadcrumb li + li::before{content:"›";margin-right:var(--s-sm);color:var(--text-3)}.grid{display:grid;gap:var(--s-xl);grid-template-columns:1fr;margin-top:var(--s-2xl);padding:0;list-style:none}@media (min-width:560px){.grid--videos,.grid--hubs{grid-template-columns:repeat(2,1fr)}}@media (min-width:860px){.grid--videos{grid-template-columns:repeat(3,1fr)}.grid--hubs{grid-template-columns:repeat(3,1fr)}}.card{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg);overflow:hidden;display:flex;flex-direction:column}.card__thumb{aspect-ratio:16 / 9;width:100%;object-fit:cover;background:var(--bg-alt);display:block}.card__body{padding:var(--s-lg);display:flex;flex-direction:column;gap:var(--s-sm);flex:1}.card__title{margin:0;font-size:1rem;line-height:1.4}.card__title a{color:var(--text);text-decoration:none}.card__title a:hover{color:var(--text-info)}.card__title a::after{content:"";position:absolute;inset:0}.card{position:relative}.card__meta{display:flex;flex-wrap:wrap;gap:var(--s-sm);font-size:0.85rem;color:var(--text-2);margin-top:auto}.tag{display:inline-block;padding:2px var(--s-sm);border-radius:var(--radius);background:var(--bg-info);color:var(--text-info);font-size:0.8rem;white-space:nowrap}.hub-card{display:block;padding:var(--s-xl);border:1px solid var(--border);border-radius:var(--radius-lg);text-decoration:none;color:var(--text);background:var(--bg)}.hub-card:hover{border-color:var(--brand)}.hub-card h3{margin-bottom:var(--s-xs);color:var(--text-info)}.hub-card p{margin:0;color:var(--text-2);font-size:0.95rem}.hub-card__count{display:block;margin-top:var(--s-md);font-size:0.85rem;color:var(--text-3)}.video-layout{display:grid;gap:var(--s-3xl);grid-template-columns:1fr;align-items:start}@media (min-width:900px){.video-layout{grid-template-columns:minmax(0,2fr) minmax(260px,1fr)}}.specs{width:100%;border-collapse:collapse;font-size:0.95rem}.specs caption{text-align:left;font-weight:600;padding-bottom:var(--s-md)}.specs th,.specs td{text-align:left;padding:var(--s-md) 0;border-bottom:1px solid var(--border);vertical-align:top}.specs th{font-weight:500;color:var(--text-2);width:45%}.prose{max-width:68ch}.prose :where(h2,h3){margin-top:var(--s-2xl)}.prose a{color:var(--text-info)}.sidebar{display:flex;flex-direction:column;gap:var(--s-2xl)}.panel{border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--s-xl);background:var(--bg-alt)}.panel h2,.panel h3{margin-top:0;font-size:1.05rem}.link-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--s-md)}.form-field{display:flex;flex-direction:column;gap:var(--s-xs);margin-bottom:var(--s-lg)}.form-field label{font-weight:500;font-size:0.95rem}.form-field input[type="email"],.form-field input[type="text"]{font:inherit;padding:var(--s-md);border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--bg);color:var(--text);min-height:48px}.form-consent{display:flex;gap:var(--s-sm);align-items:flex-start;font-size:0.9rem;color:var(--text-2);margin-bottom:var(--s-lg)}.form-consent input{margin-top:5px;flex-shrink:0}.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.form-status[hidden]{display:none}.form-status{padding:var(--s-md);border-radius:var(--radius);background:var(--bg-info);color:var(--text-info)}.form-status[data-state="error"]{background:#faeeda;color:#633806}.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding-block:var(--s-3xl);font-size:0.95rem}.footer-cols{display:grid;gap:var(--s-2xl);grid-template-columns:1fr}@media (min-width:700px){.footer-cols{grid-template-columns:repeat(4,1fr)}}.site-footer h2{font-size:0.9rem;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-3);margin-bottom:var(--s-md)}.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--s-sm)}.site-footer a{color:var(--text);text-decoration:none}.site-footer a:hover{color:var(--text-info);text-decoration:underline}.footer-bottom{margin-top:var(--s-2xl);padding-top:var(--s-lg);border-top:1px solid var(--border);color:var(--text-2);font-size:0.85rem;display:flex;flex-direction:column;gap:var(--s-sm)}lite-youtube{position:relative;display:block;width:100%;aspect-ratio:16 / 9;background:#000;border-radius:var(--radius-lg);overflow:hidden;contain:content}lite-youtube .lite-yt__poster{width:100%;height:100%;object-fit:cover;transform:scale(1.34)}lite-youtube .lite-yt__button{position:absolute;inset:0;width:100%;height:100%;display:grid;place-items:center;background:transparent;border:0;cursor:pointer;padding:0}lite-youtube svg{width:68px;height:48px}lite-youtube .lite-yt__shape{fill:#212121;fill-opacity:0.8;transition:fill-opacity 0.15s}lite-youtube .lite-yt__arrow{fill:#fff}lite-youtube .lite-yt__button:hover .lite-yt__shape,lite-youtube .lite-yt__button:focus-visible .lite-yt__shape{fill:#f00;fill-opacity:1}lite-youtube iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.player-fallback{display:block;aspect-ratio:16 / 9;width:100%;border-radius:var(--radius-lg);overflow:hidden}.player-fallback img{width:100%;height:100%;object-fit:cover}.timer__config,.build-form__grid{display:grid;gap:var(--s-lg);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-bottom:var(--s-xl)}.timer__field{display:flex;flex-direction:column;gap:var(--s-xs)}.timer__field label{font-size:0.9rem;font-weight:500}.timer__field select{font:inherit;padding:var(--s-sm) var(--s-md);border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--bg);color:var(--text);min-height:44px}.timer__check{display:flex;align-items:center;gap:var(--s-sm);font-size:0.9rem;grid-column:1 / -1}.timer__display{text-align:center;padding-block:var(--s-2xl)}.timer__round{color:var(--text-3);margin-bottom:var(--s-xs);min-height:1.2em}.timer__phase{font-size:1.2rem;font-weight:600;margin-bottom:var(--s-sm)}.timer__count{font-size:clamp(3rem,2rem + 6vw,5rem);font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1;margin:0}.timer__controls{display:flex;flex-wrap:wrap;gap:var(--s-md);justify-content:center}.timer__results{margin-top:var(--s-2xl);text-align:center}.timer__results ol{display:inline-flex;gap:var(--s-xl);list-style:none;padding:0;font-variant-numeric:tabular-nums;font-weight:600}.build-form{margin-top:var(--s-xl)}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.stack > * + *{margin-top:var(--s-lg)}