.NTo9Uq_brand{flex-shrink:0;width:160px;line-height:0;display:inline-block}.NTo9Uq_brand img{width:100%;height:auto;display:block}.NTo9Uq_large{width:clamp(115px,27vw,390px)}@media (max-width:600px){.NTo9Uq_brand{width:140px}.NTo9Uq_large{width:115px}}
._1T7Jaa_header{height:var(--header-height);max-width:var(--content);padding:16px var(--gutter);border-bottom:1px solid var(--line);align-items:center;gap:40px;margin:auto;display:flex}._1T7Jaa_home{text-decoration:none}._1T7Jaa_tagline{font-size:12px;line-height:1.3}._1T7Jaa_header nav{align-items:center;gap:28px;margin-left:auto;display:flex}._1T7Jaa_header nav a{align-items:center;gap:12px;min-height:44px;font-size:13px;font-weight:500;text-decoration:none;display:flex}._1T7Jaa_header nav a:hover{text-underline-offset:5px;text-decoration:underline}@media (max-width:700px){._1T7Jaa_header{gap:16px;padding-top:12px;padding-bottom:12px}._1T7Jaa_tagline{display:none}._1T7Jaa_header nav{gap:12px}._1T7Jaa_header nav a{font-size:11px}._1T7Jaa_home span{font-size:29px}}
.UD_cxa_links{flex-wrap:wrap;gap:8px 22px;display:flex}.UD_cxa_links a{text-underline-offset:4px;align-items:center;min-height:44px;display:inline-flex}.UD_cxa_links a[aria-current=page]{color:var(--blue);font-weight:600}
.GL9H9W_link{background:var(--blue);color:#fff;min-height:52px;transition:transform .16s var(--ease-out), background-color .16s;border:1px solid #0000;border-radius:3px;justify-content:space-between;align-items:center;gap:30px;padding:14px 20px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.GL9H9W_link:active{transform:translateY(2px)}.GL9H9W_link svg{transition:transform .18s var(--ease-out)}.GL9H9W_light{background:var(--paper);color:var(--ink)}@media (hover:hover) and (pointer:fine){.GL9H9W_link:hover{background:var(--blue-dark)}.GL9H9W_light:hover{background:#fff}.GL9H9W_link:hover svg{transform:translate(3px)}}
.Np8Rua_footer{max-width:var(--content);padding:50px var(--gutter) 20px;margin:auto}.Np8Rua_top{justify-content:space-between;align-items:flex-end;gap:40px;padding-bottom:44px;display:flex}.Np8Rua_top>div{align-items:flex-end;gap:40px;display:flex}.Np8Rua_top p{letter-spacing:-.035em;font-size:23px;font-weight:500;line-height:1.15}.Np8Rua_bottom{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding-top:12px;font-size:11px;display:flex}.Np8Rua_bottom a{text-underline-offset:3px;align-items:center;min-height:44px;display:flex}@media (max-width:900px){.Np8Rua_top>div{display:block}.Np8Rua_top p{margin-bottom:18px}}@media (max-width:600px){.Np8Rua_footer{padding-top:36px}.Np8Rua_top{align-items:start;gap:20px;padding-bottom:28px}.Np8Rua_top>div{max-width:185px}.Np8Rua_top p{font-size:20px}.Np8Rua_top>div>a{gap:10px;padding:12px;font-size:12px}.Np8Rua_bottom{flex-wrap:wrap;gap:8px}.Np8Rua_bottom nav{order:3;width:100%}}
.EelAuW_hero{max-width:var(--content);min-height:calc(100svh - var(--header-height));padding:clamp(24px, 4svh, 50px) var(--gutter) 20px;flex-direction:column;justify-content:center;gap:28px;margin:auto;display:flex}.EelAuW_composition{flex:1;grid-template-columns:minmax(0,1fr) clamp(180px,21vw,300px);grid-template-areas:"headline signature""description signature";align-content:center;gap:32px clamp(24px,4vw,64px);display:grid}.EelAuW_hero h1{width:max-content;max-width:100%;font:400 clamp(64px, min(8.9vw, 16svh), 142px)/.99 var(--font-display);letter-spacing:-.065em;grid-area:headline;margin:0}.EelAuW_hero h1>span:first-of-type{color:var(--blue)}.EelAuW_asterisk{vertical-align:top;font-family:var(--font-sans);color:var(--orange);margin-left:.16em;font-size:.7em;font-weight:400;line-height:.9;display:inline-block}.EelAuW_signature{flex-direction:column;grid-area:signature;align-self:center;align-items:center;gap:36px;display:flex}.EelAuW_symbol{width:100%;height:auto}.EelAuW_aside{gap:10px;width:max-content;font-size:clamp(17px,1.6vw,22px);font-weight:500;line-height:1.25;display:flex;transform:rotate(-3deg)}.EelAuW_aside>span{color:var(--orange);font-size:34px;line-height:1}.EelAuW_description{grid-area:description}.EelAuW_description>p{max-width:485px;font-size:18px;line-height:1.5}.EelAuW_actions{align-items:center;gap:24px;margin-top:28px;display:flex}.EelAuW_scrollCue{align-self:flex-start;align-items:center;gap:14px;min-height:44px;font-size:13px;text-decoration:none;display:inline-flex}.EelAuW_scrollCue svg{transition:transform .18s var(--ease-out)}@media (hover:hover) and (pointer:fine){.EelAuW_scrollCue:hover svg{transform:translateY(3px)}}@media (max-width:1000px){.EelAuW_actions{flex-direction:column;align-items:flex-start;gap:14px}.EelAuW_description>p{font-size:17px}.EelAuW_signature{gap:24px}}@media (max-width:700px){.EelAuW_hero{gap:20px;padding-top:32px;padding-bottom:16px}.EelAuW_composition{grid-template-columns:1fr;grid-template-areas:"headline""signature""description";row-gap:26px}.EelAuW_hero h1{font-size:clamp(40px,12vw,78px);line-height:1.03}.EelAuW_asterisk{margin-left:.08em}.EelAuW_signature{align-items:flex-start}.EelAuW_symbol{display:none}.EelAuW_aside{font-size:17px}.EelAuW_aside br{display:none}.EelAuW_description>p{max-width:420px;font-size:16px}.EelAuW_actions{margin-top:24px}.EelAuW_actions>a{width:100%}.EelAuW_scrollCue{margin-top:4px}}@media (max-height:650px) and (min-width:701px){.EelAuW_hero{gap:12px;padding-top:24px}.EelAuW_composition{row-gap:24px}.EelAuW_hero h1{font-size:clamp(62px,12svh,85px)}.EelAuW_signature{justify-self:end;gap:20px;max-width:200px}.EelAuW_actions{margin-top:18px}}
.emrjUW_diagram{width:195px;font-family:var(--font-sans), sans-serif;margin:26px auto 0;padding:5px 0 25px 30px;position:relative}.emrjUW_rectangle{background:#faf9f366;border:1px solid;justify-content:center;align-items:baseline;padding:27px 0;font-size:23px;display:flex}.emrjUW_rectangle sup{font-size:.6em;transform:translateY(-.55em)}.emrjUW_width{font-size:22px;font-style:italic;position:absolute;top:37px;left:3px}.emrjUW_length{text-align:center;width:165px;font-size:21px;font-style:italic;position:absolute;bottom:0;left:30px}
.zSzUja_sheet{color:var(--ink);background:#fff;border:1px solid #dedfd8;min-height:330px;padding:22px 24px 20px}.zSzUja_course{border-bottom:1px solid var(--line);letter-spacing:.04em;justify-content:space-between;align-items:center;padding-bottom:16px;font-size:9px;display:flex}.zSzUja_sheet h3{letter-spacing:-.025em;margin:22px 0 16px;font-size:21px;font-weight:500;line-height:1.15}.zSzUja_sheet>p{font-size:13px;line-height:1.55}.zSzUja_sheet footer{border-top:1px solid var(--line);color:var(--ink-soft);margin-top:22px;padding-top:14px;font-size:9px}@media (max-width:700px){.zSzUja_sheet{min-height:0;padding:18px}.zSzUja_course{padding-bottom:10px}.zSzUja_sheet h3{margin:14px 0 10px;font-size:19px}.zSzUja_sheet footer{margin-top:15px}.zSzUja_sheet [role=img]{display:none}}
._1OQmpa_notes{font-family:var(--font-hand);color:#23509c;font-size:27px;line-height:1.65}._1OQmpa_label{font:10px/1.5 var(--font-sans);letter-spacing:.06em;color:var(--ink-soft);margin-bottom:24px}._1OQmpa_notes>div{width:max-content;max-width:100%}._1OQmpa_factor{color:#173991;background:#f8dc77;margin-left:-6px;padding:0 6px}._1OQmpa_roots{font-size:.84em}._1OQmpa_answer{margin-top:10px}._1OQmpa_answer span{color:#ffe597;font-size:26px}._1OQmpa_answer{font-size:.88em}
.z94Jkq_canvas{color:#fff}.z94Jkq_surface{grid-template-columns:.95fr 1.14fr .95fr;align-items:start;gap:clamp(28px,5vw,76px);min-height:485px;padding:42px 8px 28px;display:grid}.z94Jkq_source{min-width:0;transform:rotate(-2deg)}.z94Jkq_source>article{border:0;box-shadow:0 12px 25px #0d29902b}.z94Jkq_working{min-width:0;padding-top:18px}.z94Jkq_working [data-component=working-notes]{color:#fff}.z94Jkq_working [data-component=working-notes]>p{color:#dce5ff}.z94Jkq_working [data-new-ink]:first-of-type{color:#173991}.z94Jkq_scratch{font:18px/1.4 var(--font-hand);color:#d4dfff;max-width:230px;margin:22px 0 0;transform:rotate(-2deg)}.z94Jkq_aside{min-width:0;padding-top:18px}.z94Jkq_promptIndex{color:var(--orange);margin-bottom:28px;font-size:42px;line-height:1;display:block}.z94Jkq_prompt h3,.z94Jkq_hint h3,.z94Jkq_return h3{letter-spacing:-.035em;margin-bottom:16px;font-size:clamp(24px,2.2vw,32px);font-weight:500;line-height:1.12}.z94Jkq_prompt>p,.z94Jkq_hint>p,.z94Jkq_return>p{max-width:280px;font-size:14px;line-height:1.55}.z94Jkq_prompt button{background:0 0;border:0;border-bottom:1px solid #ffffff7a;align-items:center;gap:16px;min-height:46px;margin:18px 0 12px;padding:12px 0;font-size:13px;font-weight:500;display:flex}.z94Jkq_prompt button svg{transition:transform .18s var(--ease-out)}.z94Jkq_small{color:#dce5ff;font-size:10px;line-height:1.5;display:block}.z94Jkq_hint,.z94Jkq_return{padding-top:8px}.z94Jkq_hint h3{color:#ffe597}.z94Jkq_hint>p,.z94Jkq_return>p{margin-bottom:22px}.z94Jkq_noteLabel{letter-spacing:.04em;color:#dce5ff;justify-content:space-between;align-items:center;margin-bottom:24px;font-size:10px;display:flex}.z94Jkq_noteLabel svg{color:var(--orange)}.z94Jkq_selection{color:#ffe597;letter-spacing:.05em;margin-top:15px;font-size:10px;display:block}.z94Jkq_fresh{border-top:1px solid #ffffff5c;margin:24px 0;padding-top:14px}.z94Jkq_fresh>span:first-child{letter-spacing:.04em;font-size:9px}.z94Jkq_fresh p{font:28px/1.8 var(--font-hand);color:#fff}.z94Jkq_cursor{background:var(--orange);width:20px;height:2px;margin-top:8px;display:block}.z94Jkq_surfaceFooter{color:#dce5ff;justify-content:space-between;align-items:center;gap:15px;padding:10px 0 16px;font-size:10px;display:flex}.z94Jkq_surfaceFooter>span:first-child{align-items:center;gap:7px;display:flex}@media (hover:hover) and (pointer:fine){.z94Jkq_prompt button:hover svg{transform:translate(4px)}.z94Jkq_prompt button:hover{border-color:#fff}}@media (max-width:1200px){.z94Jkq_surface{grid-template-columns:.95fr 1.08fr .95fr;gap:30px}.z94Jkq_working [data-component=working-notes]{font-size:23px}}@media (max-width:1000px) and (min-width:701px){.z94Jkq_surface{grid-template-columns:1fr 1fr;align-content:start;gap:30px 50px;min-height:690px}.z94Jkq_source{grid-row:1/3}.z94Jkq_working,.z94Jkq_aside{grid-column:2}.z94Jkq_aside{padding-top:0}.z94Jkq_promptIndex{display:none}.z94Jkq_prompt>p,.z94Jkq_hint>p,.z94Jkq_return>p{max-width:none}.z94Jkq_fresh{margin:18px 0}}@media (max-width:700px){.z94Jkq_surface{grid-template-columns:1fr;align-content:start;gap:30px;min-height:865px;padding:30px 8px 22px}.z94Jkq_source{width:100%}.z94Jkq_working{min-height:300px;padding:0}.z94Jkq_working [data-component=working-notes]{font-size:26px}.z94Jkq_scratch{margin-top:16px}.z94Jkq_aside{padding:0}.z94Jkq_promptIndex{display:none}.z94Jkq_prompt h3,.z94Jkq_hint h3,.z94Jkq_return h3{margin-bottom:12px;font-size:28px}.z94Jkq_prompt>p,.z94Jkq_hint>p,.z94Jkq_return>p{max-width:none}.z94Jkq_prompt button{margin-top:12px;margin-bottom:10px}.z94Jkq_hint,.z94Jkq_return{padding:0}.z94Jkq_hint>p,.z94Jkq_return>p{margin-bottom:16px}.z94Jkq_noteLabel{margin-bottom:12px}.z94Jkq_fresh p{font-size:26px;line-height:1.6}.z94Jkq_fresh{margin:8px 0}.z94Jkq_surfaceFooter{justify-content:flex-start;font-size:9px}.z94Jkq_surfaceFooter>span:first-child{display:none}}@media (max-width:360px){.z94Jkq_surface{min-height:875px;padding-inline:2px}.z94Jkq_working [data-component=working-notes],.z94Jkq_prompt h3,.z94Jkq_hint h3,.z94Jkq_return h3{font-size:26px}}
.RA96gq_controls{border-bottom:1px solid #ffffff59;justify-content:space-between;align-items:center;gap:20px;padding:8px 0;display:flex;position:relative}.RA96gq_progress{background:var(--orange);transform-origin:0;pointer-events:none;width:100%;height:2px;position:absolute;bottom:-1px;left:0;transform:scaleX(0)}@media (prefers-reduced-motion:reduce){.RA96gq_progress{display:none}}.RA96gq_steps{gap:28px;display:flex}.RA96gq_steps button{color:#dce5ff;white-space:nowrap;background:0 0;border:0;align-items:center;gap:9px;min-height:48px;padding:10px 0;font-size:13px;transition:color .15s;display:flex;position:relative}.RA96gq_steps button:after{content:"";transform-origin:0;height:2px;transition:transform .22s var(--ease-out);background:#fff;position:absolute;inset:auto 0 1px;transform:scaleX(0)}.RA96gq_steps button[aria-pressed=true]{color:#fff}.RA96gq_steps button[aria-pressed=true]:after{transform:scaleX(1)}.RA96gq_controls[data-animate=false] .RA96gq_steps button:after,.RA96gq_steps button:focus-visible:after{transition:none}.RA96gq_playback{align-items:center;gap:8px;display:flex}.RA96gq_playback button{color:#fff;background:0 0;border:0;justify-content:center;align-items:center;gap:7px;min-width:44px;min-height:44px;padding:8px;font-size:12px;display:flex}.RA96gq_playback>span{font-size:10px}.RA96gq_reduced{line-height:1.5}.RA96gq_steps button:focus-visible,.RA96gq_playback button:focus-visible{outline-color:var(--orange);outline-offset:3px}@media (hover:hover) and (pointer:fine){.RA96gq_steps button:hover{color:#fff}.RA96gq_playback button:hover{text-decoration:underline}}@media (max-width:1100px){.RA96gq_controls{flex-wrap:wrap;align-items:flex-start;gap:12px}.RA96gq_playback{margin-left:auto}.RA96gq_steps{flex-wrap:wrap}}@media (max-width:600px){.RA96gq_controls{display:block}.RA96gq_steps{grid-template-columns:1fr 1fr;gap:0 18px;display:grid}.RA96gq_steps button{gap:7px;font-size:12px}.RA96gq_playback{justify-content:flex-end;margin-top:12px}}
.T-J31q_story{background:var(--blue);color:#fff;scroll-margin-top:0}.T-J31q_inner{max-width:var(--content);padding:36px var(--gutter) 40px;margin:auto}.T-J31q_heading{justify-content:space-between;align-items:center;gap:30px;margin-bottom:12px;display:flex}.T-J31q_heading h2{letter-spacing:-.04em;font-size:clamp(26px,3vw,42px);font-weight:500;line-height:1.15}.T-J31q_heading>p{text-align:right;font-size:12px;line-height:1.5}.T-J31q_description{grid-template-columns:1fr 1fr;gap:40px;min-height:116px;padding-top:28px;display:grid}.T-J31q_status{letter-spacing:.04em;text-transform:uppercase;color:#dce4ff;margin-bottom:8px;font-size:10px;display:block}.T-J31q_description h3{letter-spacing:-.025em;font-size:23px;font-weight:500;line-height:1.2}.T-J31q_description>p{max-width:520px;font-size:15px;line-height:1.5}@media (max-width:700px){.T-J31q_inner{padding-top:25px;padding-bottom:28px}.T-J31q_heading{display:block}.T-J31q_heading h2{margin-bottom:10px;font-size:28px}.T-J31q_heading>p{text-align:left;font-size:11px}.T-J31q_description{grid-template-columns:1fr;gap:12px;min-height:202px}.T-J31q_description h3{font-size:22px}.T-J31q_description>p{font-size:14px}}
.kP4OuG_section{max-width:var(--content);padding:78px var(--gutter);grid-template-columns:1fr 1fr;gap:80px;margin:auto;display:grid}.kP4OuG_intro h2{font:400 clamp(42px, 5.2vw, 76px)/1.02 var(--font-display);letter-spacing:-.055em;margin:24px 0}.kP4OuG_intro>p{max-width:340px;font-size:17px;line-height:1.5}.kP4OuG_rows{margin-top:6px}.kP4OuG_rows article{grid-template-columns:1fr 25px;gap:18px;padding:0 0 36px;display:grid}.kP4OuG_rows article>span:last-child{color:var(--blue);font-size:28px;line-height:1}.kP4OuG_rows h3{letter-spacing:-.03em;margin-bottom:10px;font-size:22px;font-weight:500;line-height:1.2}.kP4OuG_rows p{max-width:400px;font-size:14px;line-height:1.55}@media (max-width:900px){.kP4OuG_section{gap:35px}.kP4OuG_rows article{grid-template-columns:1fr 20px;gap:10px}}@media (max-width:700px){.kP4OuG_section{grid-template-columns:1fr;gap:35px;padding-top:44px;padding-bottom:44px}.kP4OuG_intro h2{margin:20px 0;font-size:48px}.kP4OuG_intro p{font-size:16px}.kP4OuG_rows h3{font-size:21px}.kP4OuG_rows article{padding:22px 0}}
.Bby6UG_main{max-width:1280px;padding:70px var(--gutter) 45px;margin:auto}.Bby6UG_heading{max-width:850px}.Bby6UG_heading h1{font:400 clamp(44px, 6.3vw, 86px)/1.03 var(--font-display);letter-spacing:-.05em;margin:25px 0}.Bby6UG_summary{max-width:720px;font-size:clamp(19px,2vw,25px);line-height:1.45}.Bby6UG_date{color:var(--ink-soft);margin-top:22px;font-size:13px}.Bby6UG_body{grid-template-columns:250px minmax(0,1fr);gap:70px;margin-top:60px;display:grid}.Bby6UG_contents nav{position:sticky;top:32px}.Bby6UG_contents ul{margin:16px 0 0;padding:0;list-style:none}.Bby6UG_contents a{color:var(--ink-soft);padding:10px 0;line-height:1.4;text-decoration:none;display:block}.Bby6UG_contents a:hover{color:var(--blue);text-underline-offset:4px;text-decoration:underline}.Bby6UG_article{max-width:690px}.Bby6UG_article section{margin-bottom:44px;scroll-margin-top:24px}.Bby6UG_article h2{letter-spacing:-.025em;margin-bottom:18px;font-size:25px;font-weight:500;line-height:1.2}.Bby6UG_article p{overflow-wrap:anywhere;margin-top:14px;font-size:17px;line-height:1.75}.Bby6UG_related{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-top:40px;padding-top:20px;font-size:14px;display:flex}.Bby6UG_related>a{align-items:center;min-height:44px;display:inline-flex}@media (max-width:800px){.Bby6UG_main{padding-top:40px}.Bby6UG_body{grid-template-columns:1fr;gap:36px;margin-top:60px}.Bby6UG_contents nav{position:static}.Bby6UG_contents ul{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:20px;display:grid}.Bby6UG_contents a{min-height:44px}}@media (max-width:420px){.Bby6UG_contents ul{grid-template-columns:1fr}.Bby6UG_article p{font-size:16px}}@media print{.Bby6UG_contents,.Bby6UG_related{display:none}.Bby6UG_body{margin-top:60px;display:block}.Bby6UG_main{padding:0}.Bby6UG_article{max-width:none}.Bby6UG_article section{break-inside:avoid}}
._9ZiQG_figure{width:max-content;max-width:100%;font-family:var(--font-hand);color:var(--blue);margin:36px 0 0;transform:rotate(-3deg)}._9ZiQG_equation{align-items:center;gap:30px;font-size:clamp(30px,3.4vw,46px);line-height:1.5;display:flex}._9ZiQG_wrong{color:#68728e;position:relative}._9ZiQG_strike{background:var(--orange);height:3px;position:absolute;inset:49% -3px auto;transform:rotate(-9deg)}._9ZiQG_correct{white-space:nowrap;display:inline-block}._9ZiQG_correct small{font-size:.55em}._9ZiQG_reason{margin-top:8px;font-size:18px}@media (max-width:1000px){._9ZiQG_equation{gap:22px;font-size:31px}._9ZiQG_reason{font-size:16px}}@media (max-width:700px){._9ZiQG_figure{margin-top:28px}._9ZiQG_equation{font-size:34px}}@media (max-width:360px){._9ZiQG_equation{gap:22px;font-size:30px}}
