.question-practice{margin-block:2.5rem;padding-block:1.2rem;border-block:1px solid var(--gray-700)}.question-practice__intro{max-width:60ch}.question-practice__eyebrow{margin-bottom:.45rem;color:var(--accent-dark);font-family:var(--font-brand);font-size:.72rem;font-weight:750;letter-spacing:.08em;text-transform:uppercase}.question-practice h2{font-size:clamp(1.45rem,3vw,2rem);letter-spacing:-.03em}.question-practice__intro>p:last-child{margin-top:.75rem;color:var(--gray-400);line-height:1.6}.question-practice__list{display:grid;gap:.8rem;margin:1.4rem 0 0;padding:0;list-style:none}.question-practice__item{border-bottom:1px solid var(--gray-800)}.question-practice__route{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.35rem 1rem;align-items:center;min-height:64px;padding:.8rem 0;color:var(--gray-100);text-decoration:none}.question-practice__route .question-practice__meta,.question-practice__route h3{grid-column:1}.question-practice__action{grid-column:2;grid-row:1 / span 2;color:var(--accent-dark);font-size:.8rem;font-weight:750}.question-practice__route:hover .question-practice__action{text-decoration:underline;text-underline-offset:.2rem}.question-practice__route:focus-visible{outline:3px solid var(--accent-regular);outline-offset:3px}.question-practice__meta{display:flex;gap:.6rem;align-items:center;color:var(--gray-500);font-family:var(--font-brand);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase}.question-practice__meta span:first-child{color:var(--accent-dark);font-weight:750}.question-practice h3{margin-top:.35rem;font-size:1.08rem}.question-practice h3 a{display:inline-flex;align-items:center;min-height:44px;color:var(--gray-100);text-decoration-thickness:1px;text-underline-offset:.2rem}.question-practice__summary{margin-top:.65rem;color:var(--gray-300);font-size:var(--text-sm);line-height:1.6}.question-practice__summary--gated{padding:.55rem .7rem;border:1px solid var(--gray-700);border-radius:.45rem;background:color-mix(in srgb,var(--gray-900) 88%,var(--accent-regular))}.question-practice__summary--gated summary{min-height:44px;padding-top:.15rem;color:var(--gray-100);font-weight:700;cursor:pointer}.question-practice__summary--gated p{margin-top:.6rem}.question-practice__summary strong,.question-practice__evidence strong{color:var(--gray-100)}.question-practice__links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem;margin-top:.8rem}.question-practice__links a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:.45rem .6rem;border:1px solid var(--gray-700);border-radius:.4rem;color:var(--accent-dark);font-size:.78rem;font-weight:700;line-height:1.35;text-decoration:none}.question-practice__links a:hover,.question-practice__links a:focus-visible{border-color:var(--accent-regular);text-decoration:underline;text-underline-offset:.2rem}.question-practice__links a:focus-visible,.question-practice h3 a:focus-visible{outline:3px solid var(--accent-regular);outline-offset:3px}.question-practice__evidence{display:flex;gap:.45rem;margin-top:.8rem;color:var(--gray-500);font-size:.78rem;line-height:1.55}.question-practice__evidence>span{flex:0 0 auto;color:var(--accent-dark)}.question-practice__empty{margin-top:1.25rem;padding:.9rem;border:1px dashed var(--gray-600);color:var(--gray-400);font-size:var(--text-sm);line-height:1.6}.question-practice__compact-links{display:grid;gap:.45rem;margin-top:1rem}.question-practice__compact-links a{display:grid;grid-template-columns:3rem minmax(0,1fr) auto;gap:.6rem;align-items:center;min-height:48px;padding:.45rem .65rem;border:1px solid var(--gray-700);border-radius:.5rem;color:var(--gray-200);text-decoration:none}.question-practice__compact-links a:hover,.question-practice__compact-links a:focus-visible{border-color:var(--accent-regular)}.question-practice__compact-links a:focus-visible{outline:3px solid var(--accent-regular);outline-offset:2px}.question-practice__compact-links span{color:var(--accent-dark);font-size:.76rem;font-weight:800}.question-practice__compact-links strong{font-size:.86rem;line-height:1.35}.question-practice__compact-links i{color:var(--accent-dark);font-style:normal}@media(min-width:50em){.question-practice{margin-block:3.25rem}.question-practice__compact-links{grid-template-columns:repeat(2,minmax(0,1fr))}}.lesson-page[data-astro-cid-qla2kcjz]{padding-block:1rem 6rem}.breadcrumbs[data-astro-cid-qla2kcjz]{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin-bottom:3rem;color:var(--gray-500);font-size:var(--text-sm)}.breadcrumbs[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{display:inline-flex;align-items:center;min-height:44px;color:var(--gray-300);text-underline-offset:.25rem}.lesson-page--index[data-astro-cid-qla2kcjz] .breadcrumbs[data-astro-cid-qla2kcjz]{margin-bottom:clamp(1.25rem,3vw,2rem)}.lesson-hero[data-astro-cid-qla2kcjz]{display:grid;gap:1.5rem;padding-bottom:clamp(3rem,7vw,5.5rem)}.eyebrow[data-astro-cid-qla2kcjz],.section-kicker[data-astro-cid-qla2kcjz]{margin-bottom:.75rem;color:var(--accent-dark);font-size:.75rem;font-weight:750;letter-spacing:.02em}.eyebrow[data-astro-cid-qla2kcjz]{font-family:var(--font-brand);letter-spacing:.08em;text-transform:uppercase}h1[data-astro-cid-qla2kcjz]{max-width:15ch;font-size:clamp(2.6rem,7vw,5.6rem);letter-spacing:-.055em;text-wrap:balance}.lesson-subtitle[data-astro-cid-qla2kcjz]{max-width:62ch;margin-top:1.25rem;color:var(--gray-300);font-size:var(--text-md);line-height:1.7}.lesson-hero-note[data-astro-cid-qla2kcjz]{display:grid;gap:1rem;align-content:end}.lesson-hero--index[data-astro-cid-qla2kcjz]{padding-bottom:clamp(1.25rem,3vw,2rem)}.lesson-hero--index[data-astro-cid-qla2kcjz] h1[data-astro-cid-qla2kcjz]{max-width:none;font-size:clamp(2.6rem,6vw,4.5rem)}.lesson-payoff[data-astro-cid-qla2kcjz],.lesson-thesis[data-astro-cid-qla2kcjz]{padding-top:1rem;border-top:1px solid var(--gray-700)}.lesson-payoff[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz],.lesson-thesis[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{color:var(--accent-dark);font-size:var(--text-sm)}.lesson-payoff[data-astro-cid-qla2kcjz] p[data-astro-cid-qla2kcjz],.lesson-thesis[data-astro-cid-qla2kcjz] p[data-astro-cid-qla2kcjz]{max-width:58ch;margin-top:.45rem;color:var(--gray-200);line-height:1.65}.lesson-progress[data-astro-cid-qla2kcjz]{display:inline-flex;gap:.45rem;align-items:center;justify-self:start;color:var(--gray-500);font-size:var(--text-sm)}.lesson-progress[data-astro-cid-qla2kcjz]:before{width:.45rem;height:.45rem;border-radius:50%;background:var(--gray-500);content:""}.lesson-progress[data-astro-cid-qla2kcjz].is-complete{color:var(--accent-dark)}.lesson-progress[data-astro-cid-qla2kcjz].is-complete:before{background:var(--accent-regular)}.lesson-layout[data-astro-cid-qla2kcjz]{display:grid;gap:clamp(2.5rem,6vw,5rem);align-items:start}.lesson-content[data-astro-cid-qla2kcjz]{min-width:0}.lesson-content--index[data-astro-cid-qla2kcjz]{max-width:74rem}.lesson-index-theme[data-astro-cid-qla2kcjz],.lesson-question-index[data-astro-cid-qla2kcjz]{scroll-margin-top:1.5rem}.lesson-index-theme[data-astro-cid-qla2kcjz]{max-width:70ch;padding-block:clamp(1.5rem,4vw,2.5rem);border-top:1px solid color-mix(in srgb,var(--accent-regular) 62%,var(--gray-700))}.lesson-index-theme__answer[data-astro-cid-qla2kcjz]{margin-top:1.2rem;color:var(--gray-100);font-size:clamp(1.35rem,2.8vw,2rem);font-weight:680;line-height:1.5;text-wrap:pretty}.lesson-index-theme[data-astro-cid-qla2kcjz]>p[data-astro-cid-qla2kcjz]:last-child,.lesson-question-index[data-astro-cid-qla2kcjz] header[data-astro-cid-qla2kcjz] p[data-astro-cid-qla2kcjz]{max-width:65ch;margin-top:1rem;color:var(--gray-300);line-height:1.7}.lesson-question-index[data-astro-cid-qla2kcjz]{margin-top:.75rem;padding-top:clamp(1.75rem,4vw,2.75rem);border-top:1px solid var(--gray-700)}.lesson-question-list[data-astro-cid-qla2kcjz]{margin:1.5rem 0 0;padding:0;border-bottom:1px solid var(--gray-700);list-style:none}.lesson-question-list[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz]{border-top:1px solid var(--gray-700)}.lesson-question-list[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:3.25rem minmax(0,1fr) auto auto;gap:1rem;align-items:center;min-height:96px;padding-block:1.15rem;color:var(--gray-100);text-decoration:none}.lesson-question-index__progress[data-astro-cid-qla2kcjz]{max-width:65ch;margin-top:.6rem;color:var(--gray-500);font-size:.85rem;line-height:1.5}.lesson-question-index__done[data-astro-cid-qla2kcjz]{max-width:65ch;margin:.4rem 0 0;color:var(--accent-dark);font-size:.9rem;font-weight:650}.lesson-question-list__done[data-astro-cid-qla2kcjz]{display:inline-flex;align-items:center;min-height:44px;padding-inline:.55rem;border-radius:.4rem;color:var(--accent-text-over);background:var(--accent-regular);font-size:.72rem;font-weight:720;white-space:nowrap}.lesson-question-list[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz].is-complete .lesson-question-list__id[data-astro-cid-qla2kcjz],.lesson-question-list[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz].is-complete .lesson-question-list__copy[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{color:var(--gray-500)}.lesson-question-list[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz].is-complete .lesson-question-list__copy[data-astro-cid-qla2kcjz] small[data-astro-cid-qla2kcjz],.lesson-question-list[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz].is-complete .lesson-question-list__copy[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]{color:var(--gray-600)}.lesson-question-list__id[data-astro-cid-qla2kcjz],.lesson-question-list__arrow[data-astro-cid-qla2kcjz]{color:var(--accent-dark);font-weight:780}.lesson-question-list__copy[data-astro-cid-qla2kcjz]{display:grid;gap:.25rem;min-width:0}.lesson-question-list__copy[data-astro-cid-qla2kcjz] small[data-astro-cid-qla2kcjz]{color:var(--gray-400);font-size:.76rem}.lesson-question-list__copy[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{font-size:clamp(1.05rem,2vw,1.3rem);line-height:1.35;text-decoration:underline;text-decoration-color:color-mix(in srgb,currentColor 42%,transparent);text-decoration-thickness:1px;text-underline-offset:.22rem;text-wrap:balance}.lesson-question-list__copy[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]{max-width:65ch;color:var(--gray-300);font-size:var(--text-sm);line-height:1.55;text-wrap:pretty}.lesson-question-list[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:hover strong[data-astro-cid-qla2kcjz]{color:var(--accent-dark);text-decoration:underline;text-underline-offset:.22rem}.lesson-question-list[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible{outline:2px solid var(--accent-regular);outline-offset:4px}.lesson-chapter[data-astro-cid-qla2kcjz]{padding:clamp(2.2rem,5vw,4rem) clamp(1rem,3vw,2rem);border-top:2px solid var(--gray-700);scroll-margin-top:1.5rem}.lesson-chapter[data-astro-cid-qla2kcjz]:focus-visible{outline:2px solid var(--accent-regular);outline-offset:4px}.lesson-understand[data-astro-cid-qla2kcjz]{border-top-color:color-mix(in srgb,var(--accent-regular) 68%,var(--gray-700));background:linear-gradient(180deg,color-mix(in srgb,var(--accent-regular) 5%,transparent),transparent 20rem)}.lesson-experiment[data-astro-cid-qla2kcjz]{margin-top:clamp(3rem,7vw,6rem);border-top-color:var(--accent-regular);background:linear-gradient(180deg,color-mix(in srgb,var(--accent-regular) 9%,transparent),transparent 22rem)}.lesson-practice[data-astro-cid-qla2kcjz],.quick-review[data-astro-cid-qla2kcjz]{margin-top:clamp(3rem,7vw,6rem)}.quick-review[data-astro-cid-qla2kcjz]{background:linear-gradient(180deg,color-mix(in srgb,var(--gray-700) 24%,transparent),transparent 18rem)}h2[data-astro-cid-qla2kcjz]{font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.035em;text-wrap:balance}.chapter-heading[data-astro-cid-qla2kcjz]>p[data-astro-cid-qla2kcjz]:not(.section-kicker){max-width:62ch;margin-top:.8rem;color:var(--gray-400);line-height:1.65}.chapter-heading--action[data-astro-cid-qla2kcjz]{display:flex;flex-wrap:wrap;gap:1.25rem 2rem;align-items:end;justify-content:space-between}.experiment-launch[data-astro-cid-qla2kcjz]{display:inline-flex;gap:1rem;align-items:center;justify-content:space-between;min-width:10rem;min-height:44px;padding:.7rem .9rem;border-radius:.45rem;color:var(--accent-text-over);background:var(--accent-regular);font-weight:720;text-decoration:none}.concept-list[data-astro-cid-qla2kcjz],.step-list[data-astro-cid-qla2kcjz],.review-chain[data-astro-cid-qla2kcjz]{margin:1.5rem 0 0;padding:0;list-style:none}.concept-list[data-astro-cid-qla2kcjz]>li[data-astro-cid-qla2kcjz],.step-item[data-astro-cid-qla2kcjz]{padding-block:1.65rem;border-top:1px solid var(--gray-700)}.concept-title[data-astro-cid-qla2kcjz],.step-title[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:2.25rem minmax(0,1fr);gap:.75rem;align-items:baseline}.concept-title[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz],.step-title[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz]{color:var(--accent-dark);font-family:var(--font-brand);font-size:.76rem;font-weight:750}.concept-title[data-astro-cid-qla2kcjz] h3[data-astro-cid-qla2kcjz],.step-title[data-astro-cid-qla2kcjz] h3[data-astro-cid-qla2kcjz]{font-size:clamp(1.2rem,2.5vw,1.65rem);letter-spacing:-.02em}.concept-facts[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz]{display:grid;gap:.75rem;margin-top:1rem;padding-left:3rem}.concept-facts[data-astro-cid-qla2kcjz] div[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz] div[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:minmax(5.5rem,.25fr) minmax(0,1fr);gap:.8rem}.concept-facts[data-astro-cid-qla2kcjz] dt[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz] dt[data-astro-cid-qla2kcjz]{color:var(--gray-500);font-size:var(--text-sm)}.concept-facts[data-astro-cid-qla2kcjz] dd[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz] dd[data-astro-cid-qla2kcjz]{color:var(--gray-300);line-height:1.65}.lesson-reading[data-astro-cid-qla2kcjz]{margin-top:2rem;padding-block:1.25rem;border-block:1px solid color-mix(in srgb,var(--accent-regular) 52%,var(--gray-700));background:transparent}.reading-label[data-astro-cid-qla2kcjz]{margin:0 0 .65rem;color:var(--gray-400);font-size:var(--text-sm)}.lesson-reading[data-astro-cid-qla2kcjz]>a[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:minmax(0,1fr) auto;min-height:44px;color:var(--accent-dark);text-decoration:underline;text-underline-offset:.22rem}.lesson-reading[data-astro-cid-qla2kcjz]>a[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz]{grid-column:1;color:var(--gray-400);font-size:.75rem;font-weight:650}.lesson-reading[data-astro-cid-qla2kcjz]>a[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{grid-column:1;font-size:1rem}.lesson-reading[data-astro-cid-qla2kcjz]>a[data-astro-cid-qla2kcjz] b[data-astro-cid-qla2kcjz]{grid-column:2;grid-row:1 / span 2;align-self:center}.lesson-reading[data-astro-cid-qla2kcjz]>p[data-astro-cid-qla2kcjz]:not(.reading-label){margin-top:.55rem;color:var(--gray-400);font-size:.86rem;line-height:1.6}.reading-companion[data-astro-cid-qla2kcjz],.reading-supplement[data-astro-cid-qla2kcjz]{padding-top:.75rem;border-top:1px solid var(--gray-700)}.reading-companion[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz],.reading-supplement[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{color:var(--gray-200);text-decoration:underline;text-underline-offset:.2rem}.reading-companion[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz],.reading-supplement[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz]{display:block;margin-top:.3rem}.shader-hint[data-astro-cid-qla2kcjz]{margin:1rem 0 0 3rem;color:var(--gray-500);font-family:var(--font-brand);font-size:.8rem}.review-core[data-astro-cid-qla2kcjz]{margin-top:1.5rem;padding-block:1rem;border-block:1px solid color-mix(in srgb,var(--accent-regular) 52%,var(--gray-700))}.review-core[data-astro-cid-qla2kcjz] h3[data-astro-cid-qla2kcjz],.review-code[data-astro-cid-qla2kcjz] h3[data-astro-cid-qla2kcjz]{font-size:1rem}.review-core[data-astro-cid-qla2kcjz] p[data-astro-cid-qla2kcjz]{max-width:65ch;margin-top:.55rem;color:var(--gray-200);font-size:var(--text-md);line-height:1.65;text-wrap:pretty}.review-chain[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:2.25rem minmax(0,1fr);gap:.85rem;padding:1rem 0;border-bottom:1px solid var(--gray-700)}.review-chain[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]{color:var(--accent-dark);font-family:var(--font-brand);font-weight:700}.review-chain[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{color:var(--gray-200);line-height:1.55}.review-chain[data-astro-cid-qla2kcjz] p[data-astro-cid-qla2kcjz]{margin-top:.45rem;color:var(--gray-400);line-height:1.6}.review-chain[data-astro-cid-qla2kcjz] b[data-astro-cid-qla2kcjz]{color:var(--gray-300)}.review-code[data-astro-cid-qla2kcjz]{display:flex;flex-wrap:wrap;gap:1rem 2rem;align-items:end;justify-content:space-between;margin-top:1.5rem}.review-code[data-astro-cid-qla2kcjz] ul[data-astro-cid-qla2kcjz]{margin:.55rem 0 0;padding-left:1.2rem;color:var(--gray-400);font-family:var(--font-brand);font-size:.82rem;line-height:1.65}.review-code[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{display:inline-flex;gap:.75rem;align-items:center;justify-content:space-between;min-width:10rem;min-height:44px;padding:.65rem .85rem;border-radius:.45rem;color:var(--accent-text-over);background:var(--accent-regular);font-weight:650;text-decoration:none}.lesson-aside[data-astro-cid-qla2kcjz]{display:grid;align-content:start;gap:2rem}.lesson-related-experiments[data-astro-cid-qla2kcjz]{padding-top:1rem;border-top:1px solid var(--gray-700)}.lesson-related-experiments[data-astro-cid-qla2kcjz] h2[data-astro-cid-qla2kcjz]{font-size:1.1rem}.lesson-related-experiments[data-astro-cid-qla2kcjz] details[data-astro-cid-qla2kcjz]{margin-top:.75rem;border-top:1px solid var(--gray-700)}.lesson-related-experiments[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]{display:flex;gap:.75rem;align-items:center;justify-content:space-between;min-height:44px;color:var(--accent-dark);font-size:.82rem;font-weight:750;cursor:pointer;list-style:none}.lesson-related-experiments[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]::-webkit-details-marker{display:none}.lesson-related-experiments[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]:last-child{transition:transform .18s ease-out}.lesson-related-experiments[data-astro-cid-qla2kcjz] details[data-astro-cid-qla2kcjz][open] summary[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]:last-child{transform:rotate(180deg)}.lesson-related-experiments[data-astro-cid-qla2kcjz] ul[data-astro-cid-qla2kcjz]{display:grid;gap:.65rem;margin:.35rem 0 0;padding:0;list-style:none}.lesson-related-experiments[data-astro-cid-qla2kcjz] li[data-astro-cid-qla2kcjz]{display:grid;gap:.2rem;padding-bottom:.55rem;border-bottom:1px solid var(--gray-800)}.lesson-related-experiments[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{min-height:44px;color:var(--accent-dark);font-size:.8rem;font-weight:750;text-decoration:underline;text-underline-offset:.2rem}.lesson-related-experiments[data-astro-cid-qla2kcjz] small[data-astro-cid-qla2kcjz]{color:var(--gray-500);font-size:.7rem}.lesson-supplement[data-astro-cid-qla2kcjz]{margin-top:clamp(2.5rem,6vw,4rem);border-top:1px solid var(--gray-700);border-bottom:1px solid var(--gray-700)}.lesson-supplement[data-astro-cid-qla2kcjz] details[data-astro-cid-qla2kcjz]{padding-block:.2rem}.lesson-supplement[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]{min-height:44px;padding-block:.8rem;color:var(--accent-dark);font-weight:720;cursor:pointer;list-style:none}.lesson-supplement[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]::-webkit-details-marker{display:none}.lesson-supplement[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]:after{float:right;content:"＋";font-size:1.1rem}.lesson-supplement[data-astro-cid-qla2kcjz] details[data-astro-cid-qla2kcjz][open] summary[data-astro-cid-qla2kcjz]:after{content:"−"}.lesson-supplement[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]:focus-visible{outline:2px solid var(--accent-regular);outline-offset:3px}.lesson-supplement__body[data-astro-cid-qla2kcjz]{padding-bottom:1.5rem}.lesson-supplement[data-astro-cid-qla2kcjz] .lesson-reading[data-astro-cid-qla2kcjz]{margin-top:1rem}.lesson-overview-links[data-astro-cid-qla2kcjz]{margin-top:.75rem;border-bottom:1px solid var(--gray-700)}.lesson-overview-links[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{display:grid;grid-template-columns:minmax(0,1fr) auto;min-height:64px;padding-block:.8rem;border-top:1px solid var(--gray-700);color:var(--gray-100);text-decoration:none}.lesson-overview-links[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz],.lesson-overview-links[data-astro-cid-qla2kcjz] strong[data-astro-cid-qla2kcjz]{grid-column:1}.lesson-overview-links[data-astro-cid-qla2kcjz] span[data-astro-cid-qla2kcjz]{color:var(--gray-400);font-size:.76rem}.lesson-overview-links[data-astro-cid-qla2kcjz] b[data-astro-cid-qla2kcjz]{grid-column:2;grid-row:1 / span 2;align-self:center;color:var(--accent-dark)}.lesson-overview-links[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:hover strong[data-astro-cid-qla2kcjz]{color:var(--accent-dark);text-decoration:underline;text-underline-offset:.22rem}.experiment-launch[data-astro-cid-qla2kcjz]:hover,.experiment-launch[data-astro-cid-qla2kcjz]:focus-visible,.review-code[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:hover,.review-code[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible{text-decoration:underline;text-underline-offset:.22rem}.experiment-launch[data-astro-cid-qla2kcjz]:focus-visible,.review-code[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible,.lesson-reading[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible,.lesson-overview-links[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible,.lesson-related-experiments[data-astro-cid-qla2kcjz] summary[data-astro-cid-qla2kcjz]:focus-visible,.lesson-related-experiments[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]:focus-visible{outline:2px solid var(--accent-regular);outline-offset:3px}.lesson-nav[data-astro-cid-qla2kcjz]{display:flex;gap:1rem;justify-content:space-between;margin-top:5rem;padding-top:1.25rem;border-top:1px solid var(--gray-700)}.lesson-nav[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{display:inline-flex;align-items:center;min-height:44px;max-width:45%;color:var(--accent-dark);font-size:var(--text-sm);text-wrap:balance}.lesson-nav[data-astro-cid-qla2kcjz] .next[data-astro-cid-qla2kcjz]{text-align:right}@media(min-width:50em){.lesson-hero[data-astro-cid-qla2kcjz]{grid-template-columns:minmax(0,1fr) minmax(16rem,.65fr);gap:4rem;align-items:end}.lesson-hero--index[data-astro-cid-qla2kcjz]{grid-template-columns:minmax(0,1fr)}.lesson-layout[data-astro-cid-qla2kcjz]{grid-template-columns:minmax(0,1fr) minmax(17rem,.34fr)}.lesson-layout--index[data-astro-cid-qla2kcjz]{grid-template-columns:minmax(0,1fr)}.lesson-aside[data-astro-cid-qla2kcjz]{position:sticky;top:1.5rem;grid-column:2;grid-row:1}.lesson-content[data-astro-cid-qla2kcjz]{grid-column:1;grid-row:1}.lesson-content--index[data-astro-cid-qla2kcjz]{width:100%}}@media(max-width:32rem){.lesson-question-list[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{grid-template-columns:2.7rem minmax(0,1fr) auto auto;gap:.65rem;min-height:88px}.lesson-question-list__copy[data-astro-cid-qla2kcjz]>span[data-astro-cid-qla2kcjz]{font-size:.8rem}.lesson-chapter[data-astro-cid-qla2kcjz]{padding-inline:.25rem}.concept-facts[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz]{padding-left:0}.concept-facts[data-astro-cid-qla2kcjz] div[data-astro-cid-qla2kcjz],.step-facts[data-astro-cid-qla2kcjz] div[data-astro-cid-qla2kcjz]{grid-template-columns:1fr;gap:.25rem}.shader-hint[data-astro-cid-qla2kcjz]{margin-left:0}.experiment-launch[data-astro-cid-qla2kcjz],.review-code[data-astro-cid-qla2kcjz],.review-code[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{width:100%}.lesson-nav[data-astro-cid-qla2kcjz]{align-items:start}.lesson-nav[data-astro-cid-qla2kcjz] a[data-astro-cid-qla2kcjz]{max-width:50%}}