._course_9ce4y_1{color:#263b2b;max-width:1280px;margin:auto;padding:3rem 2rem 5rem}._intro_9ce4y_1{max-width:820px;margin:0 auto 3rem}._intro_9ce4y_1 h1{margin:1rem 0 1.6rem;font-family:Georgia,serif;font-size:clamp(2.8rem,5vw,4.8rem);font-weight:400;line-height:1.06}._intro_9ce4y_1 p{font-size:1.15rem;line-height:1.8}._course_9ce4y_1 button,._course_9ce4y_1 select,._course_9ce4y_1 input{font:inherit}._course_9ce4y_1 button,._course_9ce4y_1 select{color:#23372a;cursor:pointer;background:#faf8ee;border:1px solid #526e4650;border-radius:7px;padding:.65rem .85rem}._course_9ce4y_1 button:disabled{opacity:.45;cursor:default}._course_9ce4y_1 :focus-visible{outline-offset:4px;outline:3px solid #a27628}._course_9ce4y_1 summary{cursor:pointer;padding:.9rem 0;font-weight:600}._course_9ce4y_1 details p{line-height:1.7}._courseTools_9ce4y_1{border-top:1px solid #48683f40;border-bottom:1px solid #48683f40;justify-content:space-between;align-items:start;gap:1.5rem;padding:.6rem 0;display:flex}._courseTools_9ce4y_1 details{flex:1}._courseTools_9ce4y_1 nav{max-height:65vh;padding:0 1rem;overflow:auto}._courseTools_9ce4y_1 li{margin:.4rem 0}._courseTools_9ce4y_1 li button{text-align:left;background:0 0;border:0;padding:.25rem}._courseTools_9ce4y_1 button[aria-current]{font-weight:700;text-decoration:underline}._lesson_9ce4y_1{grid-template-columns:minmax(0,1.5fr) minmax(220px,1fr);gap:3rem;padding:3rem 0;display:grid}._lesson_9ce4y_1 h2,._fullReading_9ce4y_1 h2{margin:1rem 0;scroll-margin-top:2rem;font:400 clamp(1.9rem,3vw,2.7rem)/1.18 Georgia,serif}._lesson_9ce4y_1 p,._fullReading_9ce4y_1 p{font-size:1.15rem;line-height:1.85}._lessonText_9ce4y_1>details{border-top:1px solid #58734330;font-size:.92rem}._question_9ce4y_1{color:#647253;font-style:italic}._experiment_9ce4y_1,._specialist_9ce4y_1{background:#f8f7ed;border:1px solid #58734345;border-radius:14px;margin:1.5rem 0;padding:clamp(1rem,3vw,2rem)}._experiment_9ce4y_1 header{justify-content:space-between;align-items:center;gap:1rem;display:flex}._experiment_9ce4y_1 h3,._specialist_9ce4y_1 h3{margin:.25rem 0;font:400 1.7rem Georgia,serif}._experiment_9ce4y_1 p,._specialist_9ce4y_1 p{line-height:1.7}._switches_9ce4y_1,._controls_9ce4y_1{flex-wrap:wrap;align-items:center;gap:.7rem;margin:1rem 0;display:flex}._switches_9ce4y_1 button[aria-pressed=true]{color:#fff5d9;background:#233b2a}._controls_9ce4y_1 label{align-items:center;gap:.5rem;display:flex}._controls_9ce4y_1 input[type=number]{background:#fffdf4;border:1px solid #637c5960;border-radius:4px;width:5.5rem;padding:.45rem}._controls_9ce4y_1 select{max-width:100%}._caption_9ce4y_1{color:#58634c;font-size:.9rem}._tableScroll_9ce4y_1{overflow-x:auto}._tableScroll_9ce4y_1 table{border-collapse:collapse;width:100%;font-size:.9rem}._tableScroll_9ce4y_1 caption{text-align:left;padding:1rem 0;line-height:1.6}._tableScroll_9ce4y_1 th,._tableScroll_9ce4y_1 td{text-align:center;border:1px solid #56644e33;min-width:4rem;padding:.65rem}._tableScroll_9ce4y_1 th:first-child{text-align:left;min-width:9rem}._history_9ce4y_1{width:100%;max-height:300px;margin:1rem 0;display:block}._replay_9ce4y_1{align-items:center;gap:1rem;margin:1.5rem 0;display:flex}._replay_9ce4y_1 input{accent-color:#496746;flex:1;min-width:0}._lessonNav_9ce4y_1{grid-template-columns:auto auto 1fr;align-items:center;gap:1rem;padding:2rem 0;display:grid}._lessonNav_9ce4y_1 button:last-child,._lessonNav_9ce4y_1 a{text-align:left;color:#fff5d9;background:#243e2c;border-radius:8px;justify-self:end;max-width:650px;padding:1rem}._backstage_9ce4y_1{border-top:1px solid #49673b44;margin-top:2rem}._links_9ce4y_1{flex-wrap:wrap;gap:1rem 2rem;line-height:1.7;display:flex}._fullReading_9ce4y_1{padding:0;list-style:none}._fullReading_9ce4y_1>li{border-bottom:1px solid #526a4340;grid-template-columns:minmax(0,2fr) minmax(200px,1fr);gap:2rem;padding:2.5rem 0;scroll-margin-top:2rem;display:grid}._embedded_9ce4y_1{background:#fff;border:1px solid #53674344;border-radius:8px;width:100%;height:680px}._sequence_9ce4y_1{flex-wrap:wrap;gap:.6rem;display:flex}._sequence_9ce4y_1 span{border-bottom:2px solid #c6ab64;padding:.5rem}._specialist_9ce4y_1{overflow:hidden}@media (width<=760px){._course_9ce4y_1{padding:2rem 1rem 3rem}._lesson_9ce4y_1,._fullReading_9ce4y_1>li{grid-template-columns:1fr;gap:1rem}._lesson_9ce4y_1{padding:2rem 0}._lesson_9ce4y_1 figure{justify-self:center;max-width:420px}._courseTools_9ce4y_1{flex-direction:column}._lessonNav_9ce4y_1{grid-template-columns:1fr auto}._lessonNav_9ce4y_1 button:last-child,._lessonNav_9ce4y_1 a{grid-column:1/-1;width:100%;max-width:none}._controls_9ce4y_1 label{flex-wrap:wrap}._embedded_9ce4y_1{height:620px}._replay_9ce4y_1{flex-wrap:wrap}._intro_9ce4y_1 h1{font-size:2.7rem}}._inlineExperiment_9ce4y_2{grid-column:1/-1;min-width:0}._inlineExperiment_9ce4y_2[hidden]{display:none}._fullReading_9ce4y_1>li>div,._fullReading_9ce4y_1>li>figure{min-width:0}._courseTools_9ce4y_1 a{padding:.35rem 0;line-height:1.55;display:inline-block}._finish_9ce4y_2{flex-wrap:wrap;gap:1.5rem;padding:2rem 0;display:flex}._backstage_9ce4y_1 li{margin:1rem 0}._backstage_9ce4y_1 li p{margin:.3rem 0;font-size:.9rem}._fullReading_9ce4y_1 h2:focus{outline-offset:.5rem}._course_9ce4y_1{max-width:1440px;color:var(--lesson-ink);padding:2rem clamp(1rem,4vw,4rem) 5rem}._intro_9ce4y_1{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:end;gap:1rem 4rem;max-width:none;margin:0;padding:1rem 0 2rem;display:grid}._intro_9ce4y_1>p:first-child{grid-column:1/-1;font-size:.875rem}._intro_9ce4y_1 h1{letter-spacing:-.035em;max-width:15ch;margin:0;font-size:clamp(2.4rem,4.5vw,4.25rem)}._intro_9ce4y_1>p:last-child{max-width:46ch;color:var(--lesson-muted);margin:0;font-size:1.1rem;line-height:1.8}._courseTools_9ce4y_1{z-index:5;background:var(--paper);border-color:var(--lesson-line);padding:.35rem 0;position:sticky;top:5.5rem}._courseTools_9ce4y_1 summary{font-size:.9375rem}._courseTools_9ce4y_1 nav{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;display:grid}._fullReading_9ce4y_1{margin:0}._fullReading_9ce4y_1>li{border-color:var(--lesson-line);grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:start;gap:clamp(2rem,5vw,5rem);padding:3.5rem 0;scroll-margin-top:10rem}._fullReading_9ce4y_1 h2{letter-spacing:-.025em;margin:.4rem 0 1.2rem;font-size:clamp(1.8rem,2.8vw,2.7rem);line-height:1.15}._fullReading_9ce4y_1 p{font-size:1.0625rem;line-height:1.85}._lessonVisual_9ce4y_17{position:sticky;top:10rem}._lessonVisual_9ce4y_17 figure{background:var(--lesson-surface);border:1px solid var(--lesson-line);border-radius:6px;max-width:none;padding:clamp(1rem,2.5vw,2rem)}._lessonVisual_9ce4y_17 figcaption{color:var(--lesson-muted);font-size:1rem}._chapterHeading_9ce4y_20{border-top:2px solid var(--lesson-ink);grid-column:1/-1;margin-bottom:-1rem;padding-top:1rem}._chapterHeading_9ce4y_20 p:first-child{text-transform:uppercase;letter-spacing:.06em;margin:0;font-size:.875rem}._chapterHeading_9ce4y_20 p:last-child:not(:first-child){max-width:50ch;margin:.8rem 0 0;font:400 1.5rem/1.5 Georgia,serif}._readingPart_9ce4y_23{scroll-margin-top:10rem}._readingPart_9ce4y_23 h3{color:var(--lesson-ink);margin:1.7rem 0 .4rem;font:600 1rem/1.55 Arial,sans-serif}._readingPart_9ce4y_23 p{margin:.4rem 0 1rem}._readingPart_9ce4y_23:focus-visible{outline:2px solid var(--lesson-accent);outline-offset:.6rem}._chapterLink_9ce4y_27{gap:.7rem;font-weight:600;display:flex!important}._chapterLink_9ce4y_27 span{color:var(--lesson-accent)}._courseTools_9ce4y_1>details>nav>section>details summary{color:var(--lesson-muted);font-size:.875rem;font-weight:400}._courseTools_9ce4y_1>a{white-space:nowrap;padding:.9rem 0;font-size:.875rem}._course_9ce4y_1 button{background:var(--lesson-surface);border-color:var(--lesson-line);min-height:44px;color:var(--lesson-ink)}._course_9ce4y_1 button:hover{background:#e3eee7}._backstage_9ce4y_1,._finish_9ce4y_2{border-color:var(--lesson-line)}@media (width<=860px){._intro_9ce4y_1,._fullReading_9ce4y_1>li{grid-template-columns:1fr}._intro_9ce4y_1{gap:1rem;padding-top:.5rem}._intro_9ce4y_1 h1{max-width:20ch}._fullReading_9ce4y_1>li{gap:1.5rem;padding:2.5rem 0}._lessonVisual_9ce4y_17{position:static}._courseTools_9ce4y_1{flex-direction:row;gap:.75rem;top:5rem}._courseTools_9ce4y_1 nav{grid-template-columns:1fr}._courseTools_9ce4y_1>a{white-space:normal;font-size:.875rem}._chapterHeading_9ce4y_20{margin-bottom:0}}@media (prefers-reduced-motion:reduce){._course_9ce4y_1 *{scroll-behavior:auto;transition:none!important;animation:none!important}}@media (width<=860px){._courseTools_9ce4y_1{position:relative;top:auto}._courseTools_9ce4y_1 nav{max-height:50dvh}._fullReading_9ce4y_1>li,._readingPart_9ce4y_23{scroll-margin-top:6rem}}