.ArticlePassage_passage__OXDjk{display:grid;gap:10px}.ArticlePassage_tools__D9qCb{display:flex;justify-content:flex-start;margin-left:-12px;min-height:34px}.ArticlePassage_tool__iaa88{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;border:1px solid transparent;background:transparent;color:rgb(var(--home-muted));font:var(--lesson-label);font-weight:500;cursor:pointer;transition:border-color .16s ease,color .16s ease}.ArticlePassage_tool__iaa88:hover{border-color:rgb(var(--home-border));color:rgb(var(--home-ink))}.ArticlePassage_tool__iaa88:focus-visible{outline:2.5px solid rgb(var(--accent,var(--home-math))/.7);outline-offset:2px}.ArticlePassage_tool__iaa88 svg{width:17px;height:17px}.ArticlePassage_paragraph__d5XM5{font:var(--lesson-passage);margin:0}.ArticlePassage_paragraph__d5XM5+.ArticlePassage_paragraph__d5XM5{margin-top:16px}.Glossary_term__ESXpE{cursor:help;border-radius:2px;text-decoration-line:underline;text-decoration-style:dotted;text-decoration-thickness:1.5px;text-decoration-color:color-mix(in srgb,var(--subject-color,currentColor) 70%,transparent);text-underline-offset:.24em;text-decoration-skip-ink:auto;-webkit-tap-highlight-color:transparent;transition:background-color .16s ease,box-shadow .16s ease,text-decoration-color .16s ease}.Glossary_term__ESXpE:hover,.Glossary_term__ESXpE[data-glossary-active]{text-decoration-style:solid;text-decoration-color:var(--subject-color,currentColor);background-color:var(--subject-soft,rgb(0 0 0/.05));box-shadow:0 0 0 2px var(--subject-soft,rgb(0 0 0/.05))}.Glossary_term__ESXpE:focus-visible{outline:2px solid var(--fg-accent,currentColor);outline-offset:3px}.Glossary_card__Doy14{--tooltip-surface:var(--fg-surface,#ffffff);--tooltip-border:var(--fg-border,#e2e4e8);--tooltip-text:var(--fg-ink,rgb(26 28 24));--tooltip-muted:var(--fg-muted,#65675f);--tooltip-accent:var(--subject-color,var(--fg-accent,#a54a32));--tooltip-shadow:0 18px 40px -20px rgb(40 35 25/.45),0 2px 8px -3px rgb(40 35 25/.14);--tooltip-shift:4px;--tooltip-plate:color-mix(in srgb,var(--subject-soft,#f1f3f5) 72%,var(--tooltip-surface));box-sizing:border-box;width:max-content;max-width:min(320px,calc(100vw - 24px));border:1px solid var(--tooltip-border);border-radius:8px;background:var(--tooltip-surface);box-shadow:var(--tooltip-shadow);color:var(--tooltip-text);font:16px/1.55 var(--font-sans),sans-serif;letter-spacing:0;text-align:left}.Glossary_card__Doy14[data-figure]{width:min(340px,calc(100vw - 24px));max-width:none}.Glossary_tooltip__DlLyU{position:fixed;top:0;left:0;z-index:90;visibility:hidden;opacity:0;transform:translateY(var(--tooltip-shift));transition:opacity .14s ease,transform .2s cubic-bezier(.2,.8,.2,1)}.Glossary_tooltip__DlLyU[data-placement=bottom]{--tooltip-shift:-4px}.Glossary_tooltip__DlLyU[data-ready]{opacity:1;transform:none}.Glossary_plate__YHDBO{display:grid;place-items:center;min-height:112px;padding:16px 14px 14px;border-bottom:1px solid color-mix(in srgb,var(--tooltip-accent) 14%,var(--tooltip-border));border-radius:7px 7px 0 0;background:radial-gradient(70% 90% at 50% 100%,color-mix(in srgb,var(--tooltip-surface) 70%,transparent),transparent 75%),var(--tooltip-plate)}.Glossary_body__LOCqq{padding:13px 16px 14px}.Glossary_card__Doy14[data-figure] .Glossary_body__LOCqq{padding-top:12px}.Glossary_context__d2ASC{margin:0 0 4px;color:var(--tooltip-muted);font:600 var(--type-label,14px)/1.4 var(--font-sans),sans-serif;letter-spacing:.1em;text-transform:uppercase}.Glossary_name__iXZIF{margin:0 0 3px;color:var(--tooltip-accent);font:400 20px/1.25 var(--fg-serif,var(--font-serif)),Georgia,serif;font-variant-numeric:lining-nums;letter-spacing:-.01em}.Glossary_definition__pBzVt{margin:0}.Glossary_example__hP_gI{margin:10px 0 0;padding-top:9px;border-top:1px solid var(--tooltip-border);color:var(--tooltip-muted);font-size:15px;line-height:1.5}.Glossary_exampleLabel__GwAx3{display:block;margin-bottom:1px;color:var(--tooltip-muted);font:600 12px/1.5 var(--font-sans),sans-serif;letter-spacing:.1em;text-transform:uppercase}.Glossary_arrow__Dl9El{position:absolute;width:10px;height:10px;background:var(--tooltip-surface);transform:rotate(45deg)}.Glossary_tooltip__DlLyU[data-placement=top] .Glossary_arrow__Dl9El{bottom:-6px;border-right:1px solid var(--tooltip-border);border-bottom:1px solid var(--tooltip-border)}.Glossary_tooltip__DlLyU[data-placement=bottom] .Glossary_arrow__Dl9El{top:-6px;background:var(--tooltip-surface);border-top:1px solid var(--tooltip-border);border-left:1px solid var(--tooltip-border)}.Glossary_tooltip__DlLyU[data-figure][data-placement=bottom] .Glossary_arrow__Dl9El{background:var(--tooltip-plate);border-color:color-mix(in srgb,var(--tooltip-accent) 14%,var(--tooltip-border))}@media (prefers-reduced-motion:reduce){.Glossary_term__ESXpE,.Glossary_tooltip__DlLyU{transition:none}.Glossary_tooltip__DlLyU{transform:none}}.InstructorLetter_letter__xP593{--letter-ink:rgb(var(--home-ink));--letter-muted:rgb(var(--home-muted));--letter-accent:rgb(var(--home-ember-deep));--letter-tint:rgb(var(--home-ember)/0.07);--letter-panel:#ffffff;--letter-edge:#d6d4ca;--letter-hairline:#e4e1d7;--letter-control-edge:#b9b1a6;--letter-radius:22px;--letter-shadow:0 24px 60px -24px rgb(60 40 24/0.4);--letter-portrait-shadow:0 1px 2px rgb(60 40 24/0.07),0 18px 36px -20px rgb(60 40 24/0.32);--letter-serif:var(--font-serif);--letter-sans:var(--font-sans);display:grid;align-items:center;max-width:1352px;margin:0 auto;color:var(--letter-ink);font-family:var(--letter-sans),sans-serif}.InstructorLetter_card__c5z6C,.InstructorLetter_portrait__7Dw2m{grid-area:1/1}.InstructorLetter_portrait__7Dw2m{position:relative;justify-self:end;align-self:stretch;width:66%;min-height:var(--letter-portrait-height,clamp(560px,46vw,700px));overflow:hidden;border-radius:var(--letter-radius);background:#f1f3f5;box-shadow:var(--letter-portrait-shadow)}.InstructorLetter_portrait__7Dw2m img{position:absolute;display:block;width:100%;height:100%;object-fit:cover;object-position:44% 28%}.InstructorLetter_card__c5z6C{position:relative;z-index:1;justify-self:start;display:grid;justify-items:start;width:min(600px,47%);margin-block:var(--letter-card-inset,48px);padding:var(--letter-card-padding,clamp(28px,3vw,48px));border:1px solid var(--letter-edge);border-radius:var(--letter-radius);background:var(--letter-panel);box-shadow:var(--letter-shadow)}.InstructorLetter_hello__ZAMOB{margin:0;font:400 var(--type-heading)/1.2 var(--letter-serif),Georgia,serif;font-variant-numeric:lining-nums;color:var(--letter-muted)}.InstructorLetter_letter__xP593 .InstructorLetter_name__fJD0S{margin:4px 0 0;font:400 clamp(52px,4.8vw,72px)/1 var(--letter-serif),Georgia,serif;font-size:var(--letter-name-size,clamp(52px,4.8vw,72px));font-variant-numeric:lining-nums;letter-spacing:-.035em;color:var(--letter-ink)}.InstructorLetter_name__fJD0S span{color:var(--letter-accent)}.InstructorLetter_role__f_OWB{display:flex;align-items:center;gap:12px;margin:12px 0 0;font-size:var(--type-label);font-weight:600;line-height:1.4;letter-spacing:.14em;text-transform:uppercase;color:var(--letter-accent)}.InstructorLetter_role__f_OWB:before{content:"";width:28px;height:1px;flex:none;background:currentColor}.InstructorLetter_lede__N5Sfs{width:100%;margin:var(--letter-rhythm,24px) 0 0;padding-top:var(--letter-rhythm,24px);border-top:1px solid var(--letter-hairline);font:400 var(--type-heading)/1.3 var(--letter-serif),Georgia,serif;text-wrap:pretty;font-variant-numeric:lining-nums;letter-spacing:-.01em}.InstructorLetter_facts__c4mYu{display:grid;grid-template-columns:repeat(3,minmax(0,auto));justify-content:start;gap:16px 36px;margin:var(--letter-rhythm,24px) 0 0}.InstructorLetter_facts__c4mYu div{display:grid;gap:8px}.InstructorLetter_facts__c4mYu dt{font-size:var(--type-label);font-weight:500;line-height:1.3;color:var(--letter-muted)}.InstructorLetter_facts__c4mYu dd{margin:0;font:400 var(--type-title)/1 var(--letter-serif),Georgia,serif;font-variant-numeric:lining-nums;letter-spacing:-.02em;color:var(--letter-ink)}.InstructorLetter_close__QYVnk{margin:20px 0 0;font-size:var(--type-read);line-height:1.6;text-wrap:pretty;color:var(--letter-muted)}.InstructorLetter_action__bgAGD{display:inline-flex;align-items:center;gap:10px;min-height:48px;margin-top:var(--letter-rhythm,24px);padding:10px 20px;border:1px solid var(--letter-control-edge);border-radius:10px;color:var(--letter-ink);background:transparent;font-size:var(--type-read);font-weight:500;line-height:1.2;text-decoration:none;transition:border-color .16s ease-out,background-color .16s ease-out,transform .2s ease-out}.InstructorLetter_action__bgAGD svg{flex:none;width:17px;height:17px;transition:transform .2s ease-out}.InstructorLetter_action__bgAGD:active{transform:scale(.985)}.InstructorLetter_postscript__Js40A{width:100%;margin-top:calc(var(--letter-rhythm, 24px) + 4px);padding-top:calc(var(--letter-rhythm, 24px) - 4px);border-top:1px solid var(--letter-hairline);font-size:var(--type-read);line-height:1.6;color:var(--letter-muted)}.InstructorLetter_postscript__Js40A a{white-space:nowrap;color:var(--letter-ink);font-weight:500;text-decoration:underline;text-decoration-color:var(--letter-control-edge);text-decoration-thickness:1px;text-underline-offset:4px;transition:color .16s ease-out,text-decoration-color .16s ease-out}.InstructorLetter_postscript__Js40A a svg{display:inline-block;width:15px;height:15px;margin-left:2px;vertical-align:-2px;transition:transform .2s ease-out}.InstructorLetter_letter__xP593 a:focus-visible{outline:2px solid var(--letter-accent);outline-offset:4px;border-radius:4px}.InstructorLetter_letter__xP593 .InstructorLetter_action__bgAGD:focus-visible{border-radius:10px}@media (hover:hover){.InstructorLetter_action__bgAGD:hover{border-color:var(--letter-accent);background:var(--letter-tint)}.InstructorLetter_action__bgAGD:hover svg{transform:translateX(3px)}.InstructorLetter_postscript__Js40A a:hover{color:var(--letter-accent);text-decoration-color:currentColor}.InstructorLetter_postscript__Js40A a:hover svg{transform:translate(2px,-2px)}}@media (prefers-reduced-motion:reduce){.InstructorLetter_action__bgAGD,.InstructorLetter_action__bgAGD svg,.InstructorLetter_postscript__Js40A a svg{transition:none}.InstructorLetter_action__bgAGD:active,.InstructorLetter_action__bgAGD:hover svg,.InstructorLetter_postscript__Js40A a:hover svg{transform:none}}@media (max-width:1200px){.InstructorLetter_portrait__7Dw2m img{object-position:36% 28%}}@media (max-width:900px){.InstructorLetter_letter__xP593{display:block}.InstructorLetter_portrait__7Dw2m{width:100%;min-height:0;height:clamp(340px,62vw,520px)}.InstructorLetter_portrait__7Dw2m img{object-position:58% 22%}.InstructorLetter_card__c5z6C{width:auto;margin:-64px 12px 0}}@media (max-width:720px){.InstructorLetter_letter__xP593{--letter-radius:16px}.InstructorLetter_portrait__7Dw2m{height:340px}.InstructorLetter_card__c5z6C{margin:-48px 8px 0;padding:24px}.InstructorLetter_letter__xP593 .InstructorLetter_name__fJD0S{font-size:var(--letter-name-size,48px)}.InstructorLetter_facts__c4mYu{gap:16px 24px}}