:root{--pretendard-font:"Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, sans-serif;--color-paper:#040710;--color-paper-2:#0c111d;--color-paper-3:#161d2b;--color-ink:#f3f5f9;--color-muted:#a9b1c2;--color-subtle:#80899c;--color-accent:#86b5ff;--color-accent-soft:#102252;--color-accent-hover:#a8ccff;--color-on-accent:#060d1c;--color-rule:#303848;--color-rule-soft:#1c222e;--color-success:#9ec39e;--color-error:#f1a496;--color-sheet:#f8f5ee;--color-sheet-ink:#151a26;--color-sheet-muted:#515866;--color-sheet-rule:#b6bbc4;--color-transparent:transparent;--color-shadow:#01010740;--color-spotlight:#19399033;--color-white:#f7f8fb;--color-deep:#040710;--color-blue:#174ee6;--color-blue-light:#86b5ff;--color-blue-dark:#102d8c;--color-ice:#e6edfb;--color-surface:#fff;--color-symbol-silver:#b0b8c8;--color-symbol-metal:#465574;--color-symbol-pages:#dbe1ee;--color-symbol-wood:#dab787;--color-symbol-shadow:#00000359;--font-display:var(--pretendard-font), sans-serif;--font-body:var(--pretendard-font), sans-serif;--space-2xs:.25rem;--space-xs:.5rem;--space-sm:.75rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2.5rem;--space-2xl:4rem;--space-3xl:6rem;--space-4xl:9rem;--text-sm:.875rem;--text-base:1rem;--text-secondary:1.125rem;--text-secondary-compact:1rem;--text-feature-label:1.375rem;--text-feature-label-compact:1.125rem;--text-body:clamp(1rem, .6vw + .75rem, 1.125rem);--text-lg:1.5rem;--text-title:clamp(2rem, 3.2vw + .75rem, 3.625rem);--text-display:clamp(2.375rem, 4.8vw + .25rem, 5.25rem);--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in:cubic-bezier(.7, 0, .84, 0);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--dur-micro:.12s;--dur-short:.22s;--dur-long:.42s;--radius-sm:.25rem;--radius-md:.75rem;--radius-lg:1rem;--rule-hair:1px;--page-gutter:clamp(1.25rem, 4vw, 4rem);--content-width:78rem;--z-base:1;--z-raised:10;--z-sticky:200}@supports (color:lab(0% 0 0)){:root{--color-paper:lab(1.92167% .242338 -4.1009);--color-paper-2:lab(5.14202% .337563 -8.31669);--color-paper-3:lab(10.4836% .457041 -10.8901);--color-ink:lab(96.4943% -.142992 -2.26976);--color-muted:lab(72.0413% -.394851 -9.34982);--color-subtle:lab(56.9298% -.338346 -11.1571);--color-accent:lab(72.5764% -.331044 -44.5729);--color-accent-soft:lab(14.334% 7.76199 -31.8146);--color-accent-hover:lab(80.8902% -1.61421 -37.7461);--color-on-accent:lab(3.52795% .936769 -10.3315);--color-rule:lab(23.2676% .0450313 -11.0101);--color-rule-soft:lab(12.8508% .132106 -9.1447);--color-success:lab(75.3154% -18.1671 14.3169);--color-error:lab(74.8116% 28.4428 19.226);--color-sheet:lab(96.5712% -.00905991 3.82484);--color-sheet-ink:lab(9.36438% .242852 -9.11197);--color-sheet-muted:lab(37.2318% -.229806 -9.27523);--color-sheet-rule:lab(75.5772% -.285417 -5.26888);--color-shadow:lab(.4245% .292003 -2.09533/.25);--color-spotlight:lab(26.2041% 16.3223 -52.9098/.2);--color-white:lab(97.663% -.0978112 -1.51466);--color-deep:lab(1.92167% .242338 -4.1009);--color-blue:lab(38.6409% 31.0345 -82.7464);--color-blue-light:lab(72.5764% -.331044 -44.5729);--color-blue-dark:lab(22.3264% 21.1272 -56.4299);--color-ice:lab(93.5291% -.386953 -7.51592);--color-surface:lab(100% 0 0);--color-symbol-silver:lab(74.3617% -.401288 -9.35296);--color-symbol-metal:lab(35.8486% .689015 -20.0038);--color-symbol-pages:lab(89.4786% -.35581 -6.76829);--color-symbol-wood:lab(76.8332% 8.22532 29.3603);--color-symbol-shadow:lab(.0918045% .219889 -1.00752/.35)}}.theme-light{--color-paper:#f7f8fb;--color-paper-2:#ebeef5;--color-paper-3:#dbe1ef;--color-ink:#111826;--color-muted:#505868;--color-subtle:#6a7281;--color-accent:var(--color-blue);--color-accent-soft:#d6e2f9;--color-accent-hover:#174bd7;--color-on-accent:var(--color-white);--color-rule:#b4bbc9;--color-rule-soft:#d3d8e1;--color-success:#0b5d2a;--color-error:#9e2225;background:var(--color-paper);color:var(--color-ink)}@supports (color:lab(0% 0 0)){.theme-light{--color-paper:lab(97.663% -.0978112 -1.51466);--color-paper-2:lab(94.1564% -.225365 -3.77545);--color-paper-3:lab(89.4688% -.382066 -7.51333);--color-ink:lab(8.15628% .58081 -10.86);--color-muted:lab(37.2131% -.200406 -10.3649);--color-subtle:lab(47.6757% -.298589 -9.305);--color-accent-soft:lab(89.3904% -.493288 -13.0614);--color-accent-hover:lab(36.6084% 28.0845 -77.4504);--color-rule:lab(75.5375% -.381291 -8.24455);--color-rule-soft:lab(86.0177% -.293016 -5.27304);--color-success:lab(34.0894% -33.3935 22.2294);--color-error:lab(35.7378% 50.6495 31.601)}}.theme-ice{--color-paper:var(--color-ice);--color-paper-2:#f7f8fb;--color-paper-3:#d2dbee;background:var(--color-paper)}@supports (color:lab(0% 0 0)){.theme-ice{--color-paper-2:lab(97.663% -.0978112 -1.51466);--color-paper-3:lab(87.1077% -.454485 -10.4778)}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:6rem;overflow-x:clip}body{background:var(--color-paper);color:var(--color-ink);font-family:var(--font-body);font-size:var(--text-base);-webkit-font-smoothing:antialiased;margin:0;line-height:1.65;overflow-x:clip}::selection{background:var(--color-accent);color:var(--color-on-accent)}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,summary{-webkit-tap-highlight-color:var(--color-transparent)}button,summary{cursor:pointer}button{color:inherit}a:focus-visible,button:focus-visible,summary:focus-visible,select:focus-visible{outline:2px solid var(--color-accent);outline-offset:5px}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-family:var(--font-display);word-break:keep-all;overflow-wrap:anywhere;min-width:0;font-style:normal}h2{font-size:var(--text-title);letter-spacing:-.045em;font-weight:750;line-height:1.25}svg{flex-shrink:0}[hidden]{display:none!important}.container{width:min(100% - var(--page-gutter) * 2, var(--content-width));margin-inline:auto}.section-space{padding-block:clamp(5rem,8vw,9rem)}.section-head{gap:var(--space-lg);margin-bottom:var(--space-xl);display:grid}.section-description{font-size:var(--text-body);color:var(--color-muted);word-break:keep-all;line-height:1.85}.accent{color:var(--color-accent)}.skip-link{top:var(--space-md);left:var(--space-md);z-index:var(--z-sticky);clip-path:inset(50%);white-space:nowrap;background:var(--color-accent);width:1px;height:1px;color:var(--color-on-accent);padding:0;position:fixed;overflow:hidden}.skip-link:focus{width:auto;height:auto;padding:var(--space-sm) var(--space-lg);clip-path:none;overflow:visible}.site-header{z-index:var(--z-raised);position:absolute;inset:0 0 auto}.header-inner{justify-content:space-between;align-items:center;height:88px;display:flex}.wordmark{white-space:nowrap;flex-direction:column;justify-content:center;gap:5px;min-height:44px;line-height:1;display:inline-flex}.wordmark-name{font-family:var(--font-display);letter-spacing:-.055em;font-size:25px;font-weight:850}.wordmark-dot{color:var(--color-accent)}.wordmark-sub{font-family:var(--font-display);letter-spacing:.4em;font-size:10px;font-weight:650}.header-cta{font-size:var(--text-sm);align-items:center;gap:var(--space-sm);white-space:nowrap;min-height:44px;display:inline-flex}.header-cta svg,.back-top svg{width:16px;height:16px}.header-cta:hover{color:var(--color-accent)}.button{background:var(--color-accent);min-height:56px;color:var(--color-on-accent);border:1px solid var(--color-accent);border-radius:var(--radius-sm);white-space:nowrap;transition:transform var(--dur-micro) var(--ease-out);justify-content:center;align-items:center;gap:30px;padding:16px 24px;font-size:15px;font-weight:650;line-height:1.4;display:inline-flex}.button:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover);transform:translateY(-2px)}.button:active{transform:translateY(0)}.button svg{width:20px}.hero{position:relative}.hero-stage{min-height:760px;position:relative}.hero-copy{z-index:var(--z-raised);padding-top:152px;padding-bottom:48px;position:relative}.hero-audience{color:var(--color-accent);margin-bottom:var(--space-lg);letter-spacing:-.015em;align-items:center;gap:9px;font-size:13px;font-weight:550;display:flex}.hero-audience>span{background:var(--color-accent);border-radius:50%;width:5px;height:5px}.hero h1{font-size:var(--text-display);letter-spacing:-.055em;font-weight:800;line-height:1.19}.hero h1>span{color:var(--color-accent)}.hero-description{color:var(--color-muted);line-height:1.85;font-size:var(--text-body);margin-top:28px}.mobile-break{display:none}.hero-button{margin-top:30px}.hero-caption{color:var(--color-muted);align-items:center;gap:var(--space-sm);margin-top:28px;font-size:13px;display:flex}.caption-line{background:var(--color-muted);width:20px;height:1px}.hero-atmosphere{pointer-events:none;background:radial-gradient(ellipse at 65% 45%, var(--color-spotlight), var(--color-transparent) 65%);position:absolute;inset:3% -8% 0 25%}.hero-portrait{width:1120px;height:575px;position:absolute;bottom:0;right:-90px}.hero-image{object-fit:contain;object-position:right bottom}.hero-portrait:after{content:"";background:linear-gradient(to bottom, var(--color-transparent), var(--color-paper));pointer-events:none;position:absolute;inset:80% 0 0}.teacher-credit{z-index:var(--z-raised);align-items:flex-end;gap:var(--space-xs);flex-direction:column;display:flex;position:absolute;bottom:84px;right:0}.teacher-credit-role{color:var(--color-muted);font-size:12px}.teacher-credit-name{font-family:var(--font-display);letter-spacing:.2em;font-size:26px;font-weight:650}.teacher-credit a{min-height:44px;color:var(--color-muted);white-space:nowrap;align-items:center;gap:6px;font-size:11px;display:inline-flex}.teacher-credit a:hover{color:var(--color-accent)}.teacher-credit a svg{width:12px;height:12px}.hero-scroll{min-height:44px;color:var(--color-muted);align-items:center;gap:12px;font-size:11px;display:flex;position:absolute;bottom:30px;left:0}.scroll-line{background:var(--color-rule);width:1px;height:29px;position:relative}.scroll-line:after{content:"";border-right:1px solid var(--color-muted);border-bottom:1px solid var(--color-muted);width:5px;height:5px;position:absolute;bottom:0;left:-2px;transform:rotate(45deg)}.hero-foundation{background:var(--color-paper-2)}.foundation-inner{flex-direction:column;gap:18px;padding-block:26px;display:flex}.foundation-inner>p{color:var(--color-muted);font-size:13px;line-height:1.6}.foundation-inner>p strong{color:var(--color-ink);font-weight:500}.foundation-points{gap:var(--space-md) var(--space-lg);flex-wrap:wrap;display:flex}.foundation-points>span{white-space:nowrap;font-size:14px;font-weight:550}.quiet-arrow{color:var(--color-subtle);padding-inline:6px}.philosophy{position:relative}.philosophy-intro{gap:var(--space-lg);display:grid}.philosophy-note{color:var(--color-accent);font-size:13px}.learning-principles{gap:var(--space-xl);margin-top:64px;display:grid}.principle{padding-block:var(--space-lg);position:relative}.principle-english{font-family:var(--font-display);color:var(--color-muted);font-size:13px}.principle h3{letter-spacing:-.035em;margin-top:12px;font-size:clamp(1.5rem,2vw,1.875rem);font-weight:650}.principle p{color:var(--color-muted);margin-top:14px;font-size:14px;line-height:1.9}.principle-drawing{width:140px;height:54px;stroke:var(--color-accent);stroke-width:1px;margin-top:30px}.principle-understand .principle-drawing{stroke:var(--color-muted)}.principle-own .principle-drawing{stroke:var(--color-accent)}.roadmap-section{background:var(--color-paper-2)}.lesson-section{background:var(--color-paper)}.textbook-section{background:var(--color-paper-2)}.textbook-layout{gap:var(--space-xl);align-items:center;display:grid}.textbook-mark{color:var(--color-accent);margin-bottom:22px}.textbook-copy .section-description{margin-top:var(--space-lg)}.textbook-coverage{flex-wrap:wrap;gap:8px;margin-top:30px;display:flex}.textbook-coverage>span{color:var(--color-muted);background:var(--color-paper-3);border-radius:3px;padding:6px 10px;font-size:12px}.concept-caption{color:var(--color-muted);margin-top:14px;font-size:11px}.textbook-visual{min-width:0;padding:20px 0;position:relative}.chapter-sheet{background:var(--color-sheet);color:var(--color-sheet-ink);width:100%;box-shadow:8px 14px 30px var(--color-shadow);padding:clamp(24px,3vw,44px);position:relative;transform:rotate(-3deg)}.sheet-top{border-bottom:1px solid var(--color-sheet-rule);justify-content:space-between;align-items:center;gap:12px;padding-bottom:20px;font-size:10px;font-weight:550;display:flex}.sheet-top>span:first-child{font-family:var(--font-display);letter-spacing:.1em}.chapter-sheet h3{letter-spacing:-.03em;margin-top:24px;font-size:clamp(32px,4vw,44px);font-weight:750;line-height:1.2}.sheet-korean{color:var(--color-sheet-muted);margin-top:10px;font-size:13px}.sheet-sentence{font-family:var(--font-display);grid-template-columns:1.1fr .7fr 1.3fr;gap:6px;margin-top:36px;font-size:clamp(12px,1.15vw,16px);font-weight:600;display:grid}.sheet-sentence>span{border-bottom:1px solid var(--color-sheet-ink);padding-bottom:9px}.sheet-analysis{color:var(--color-sheet-muted);word-break:keep-all;grid-template-columns:1.1fr .7fr 1.3fr;gap:6px;margin-top:8px;font-size:10px;display:grid}.sheet-bottom{border-top:1px solid var(--color-sheet-rule);justify-content:space-between;align-items:center;gap:12px;margin-top:36px;padding-top:20px;font-size:11px;display:flex}.textbook-flow{color:var(--color-muted);justify-content:center;align-items:center;gap:12px;margin-top:40px;font-size:12px;display:flex}.textbook-flow>span{white-space:nowrap}.textbook-flow svg{width:16px;color:var(--color-accent)}.outcomes-section{padding-block:clamp(4rem,8vw,7rem)}.outcomes-head{gap:var(--space-lg);display:grid}.outcomes-head>p{color:var(--color-muted);font-size:var(--text-body)}.outcome-paths{gap:var(--space-lg);margin-top:50px;display:grid}.outcome-path{padding-block:var(--space-md)}.outcome-label{color:var(--color-muted);font-size:12px}.outcome-path h3{color:var(--color-accent);letter-spacing:-.04em;margin-top:12px;font-size:38px;font-weight:650}.outcome-path p{color:var(--color-muted);margin-top:14px;font-size:15px;line-height:1.8}.path-words{flex-wrap:wrap;gap:16px;margin-top:24px;font-size:12px;display:flex}.path-words>span+span:before{content:"·";color:var(--color-muted);margin-right:16px}.outcome-connector{align-items:center;gap:20px;padding-block:10px;display:flex}.outcome-connector>span{background:var(--color-rule);flex:1;height:1px}.outcome-connector svg{width:42px;height:42px;stroke:var(--color-rule);stroke-width:1px;transform:rotate(90deg)}.outcome-connector svg>path{stroke:var(--color-accent)}.formats-section{background:var(--color-paper-2)}.faq-layout{gap:var(--space-xl);display:grid}.faq-heading .section-description{margin-top:var(--space-lg)}.faq-item{border-bottom:1px solid var(--color-rule-soft)}.faq-item:first-child{border-top:1px solid var(--color-rule-soft)}.faq-item summary{word-break:keep-all;justify-content:space-between;align-items:center;gap:20px;padding-block:24px;font-size:15px;font-weight:500;list-style:none;display:flex}.faq-item summary::-webkit-details-marker{display:none}.faq-plus{flex-shrink:0;width:16px;height:16px;position:relative}.faq-plus:before,.faq-plus:after{content:"";background:var(--color-muted);position:absolute}.faq-plus:before{width:14px;height:1px;top:7px;left:1px}.faq-plus:after{width:1px;height:14px;top:1px;left:7px}.faq-item[open] .faq-plus:after{display:none}.faq-item p{color:var(--color-muted);word-break:keep-all;max-width:65ch;padding-bottom:24px;padding-right:24px;font-size:14px;line-height:1.85}.final-cta{background:var(--color-paper-2);position:relative}.final-cta-inner{align-items:center;gap:50px;display:grid}.final-cta-copy{z-index:var(--z-raised);position:relative}.final-cta-overline{color:var(--color-accent);margin-bottom:24px;font-size:12px;display:inline-block}.final-cta h2{font-size:clamp(2rem,4vw,4rem)}.final-cta h2 span{color:var(--color-accent)}.final-cta-copy>p{color:var(--color-muted);font-size:var(--text-body);word-break:keep-all;margin-top:22px}.final-cta .button{margin-top:32px}.final-reassurance{color:var(--color-muted);word-break:keep-all;margin-top:16px;font-size:11px;display:block}.final-art{justify-self:end;width:min(100%,320px);position:relative}.final-art>svg{width:100%;stroke:var(--color-accent);stroke-width:1px}.final-art-secondary{stroke:var(--color-rule)}.final-art>span{color:var(--color-muted);font-family:var(--font-display);letter-spacing:.14em;font-size:12px;line-height:1.6;position:absolute;bottom:20px;right:0}.site-footer{padding-top:36px;padding-bottom:calc(28px + env(safe-area-inset-bottom))}.footer-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px;display:flex}.footer-top .wordmark-name{font-size:21px}.footer-statement{color:var(--color-muted);font-size:13px;display:none}.back-top{color:var(--color-muted);white-space:nowrap;align-items:center;gap:8px;min-height:44px;font-size:12px;display:flex}.back-top:hover{color:var(--color-accent)}.footer-bottom{color:var(--color-muted);flex-wrap:wrap;gap:5px 16px;margin-top:30px;font-size:10px;line-height:1.8;display:flex}.footer-bottom>span{width:100%;margin-top:5px}.mobile-cta{z-index:var(--z-sticky);padding:12px var(--page-gutter) calc(12px + env(safe-area-inset-bottom));background:var(--color-paper-2);border-top:1px solid var(--color-rule);justify-content:space-between;align-items:center;gap:10px;display:flex;position:fixed;inset:auto 0 0}.mobile-cta>span{color:var(--color-muted);white-space:nowrap;font-size:10px}.button-small{gap:12px;min-height:44px;padding:10px 14px;font-size:12px}@media (min-width:48rem){.header-inner{height:104px}.wordmark-name{font-size:30px}.wordmark-sub{font-size:10px}.header-cta{font-size:14px}.hero-stage{min-height:700px}.hero-copy{padding-top:164px}.hero-portrait{width:1260px;height:646px;right:-80px}.teacher-credit{bottom:68px;right:6px}.foundation-inner{flex-direction:row;justify-content:space-between;align-items:center;gap:24px;padding-block:28px}.foundation-points{flex-wrap:nowrap;gap:clamp(16px,3vw,46px)}.foundation-points>span{font-size:14px}.section-head{gap:var(--space-xl);margin-bottom:var(--space-2xl);grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:end}.section-head>.section-description{justify-self:end}.philosophy-intro{gap:var(--space-lg) var(--space-2xl);grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:end}.philosophy-note{grid-column:1/-1}.philosophy-intro>.section-description{justify-self:end}.learning-principles{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.15fr);gap:36px}.principle+.principle{border-left:1px solid var(--color-rule-soft);padding-left:36px}.principle p{font-size:13px}.textbook-layout{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:64px}.textbook-copy h2{font-size:clamp(32px,3.5vw,48px)}.textbook-copy .section-description{font-size:15px}.outcomes-head{grid-template-columns:minmax(0,1fr) minmax(0,.6fr);align-items:end}.outcomes-head>p{justify-self:end}.outcome-paths{grid-template-columns:minmax(0,1fr) 100px minmax(0,1fr);align-items:center;gap:24px}.outcome-path{padding-top:16px}.outcome-path:last-child{padding-left:24px}.outcome-connector{flex-direction:column;height:190px}.outcome-connector>span{width:1px;height:auto}.outcome-connector svg{transform:none}.faq-layout{grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:60px}.faq-heading h2{font-size:clamp(30px,3vw,46px)}.faq-item summary{font-size:15px}.final-cta-inner{grid-template-columns:minmax(0,1.8fr) minmax(0,1fr)}.footer-statement{display:block}.footer-bottom>span{width:auto;margin-top:0;margin-left:auto}.mobile-cta{display:none!important}}@media (min-width:75rem){.hero-stage{min-height:756px}.hero-copy{padding-top:178px}.hero-portrait{width:1510px;height:774px;right:-160px}.teacher-credit{bottom:70px;right:0}.hero-caption{margin-top:36px}.hero-description{font-size:18px}.hero-button{margin-top:34px}.foundation-inner>p{font-size:13px}.foundation-points{gap:66px}.foundation-points>span{font-size:16px}.learning-principles{gap:48px}.principle+.principle{padding-left:48px}.principle p{font-size:15px}.textbook-copy h2{font-size:48px}.textbook-copy .section-description{font-size:17px}.textbook-layout{gap:112px}.faq-layout{gap:120px}.faq-item summary{font-size:16px}}@media (max-width:47.99rem){.hero-stage{min-height:860px}.hero-copy{padding-top:126px}.hero h1{font-size:clamp(34px,8.8vw,52px)}.hero-audience{margin-bottom:22px}.hero-description{margin-top:22px;font-size:15px;line-height:1.8}.mobile-break{display:block}.hero-button{margin-top:24px}.hero-caption{margin-top:18px;font-size:11px}.hero-portrait{width:860px;height:441px;bottom:0;right:calc(50% - 307px)}.hero-atmosphere{inset:38% -30% -2%}.teacher-credit{align-items:flex-start;gap:4px;bottom:70px;left:0;right:auto}.teacher-credit-role{font-size:10px}.teacher-credit-name{font-size:23px}.teacher-credit a{font-size:10px}.hero-scroll{bottom:25px}.foundation-inner{padding-block:26px}.foundation-inner>p br{display:none}.foundation-inner>p strong{margin-left:6px}.foundation-points{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px 16px;display:grid}.foundation-points>span{font-size:14px}.learning-principles{gap:8px;margin-top:40px}.principle{grid-template-columns:minmax(0,1fr) 90px;gap:0 12px;padding-block:26px;display:grid}.principle+.principle{border-top:1px solid var(--color-rule-soft)}.principle-english{grid-column:1}.principle h3{grid-column:1;margin-top:8px;font-size:26px}.principle p{grid-column:1;margin-top:12px;font-size:13px}.principle-drawing{grid-area:1/2/4;align-self:center;width:90px;margin-top:0}.textbook-visual{margin-inline:8px}.textbook-copy .section-description{font-size:14px}.outcome-paths{margin-top:32px}.outcome-path h3{font-size:34px}.final-art{width:180px;margin-top:10px}.final-art>span{font-size:10px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.button:hover,.button:active{transform:none}}.site-v2{background:var(--color-deep)}.site-v2 .button{border-radius:6px;gap:24px;min-height:56px;padding-inline:24px;font-size:15px}.site-v2 .v2-primary{background:var(--color-blue);border-color:var(--color-blue);color:var(--color-white)}.site-v2 .v2-primary:hover{background:var(--color-blue-dark);border-color:var(--color-blue-dark)}.v2-header{z-index:var(--z-sticky);padding-top:12px;position:fixed;inset:0 0 auto}.v2-nav{justify-content:space-between;align-items:center;gap:24px;height:84px;padding-inline:24px;display:flex;position:relative}.v2-nav:before{content:"";background:var(--color-paper-2);border:1px solid var(--color-rule-soft);opacity:0;transition:opacity var(--dur-short) var(--ease-out);z-index:-1;border-radius:12px;position:absolute;inset:0}.v2-header[data-scrolled=true] .v2-nav:before{opacity:1}.v2-header .wordmark-name{letter-spacing:-.045em;font-size:28px}.v2-header .wordmark-sub{letter-spacing:.4em;font-size:10px}.v2-nav-links{color:var(--color-muted);align-items:center;gap:36px;font-size:13px;display:flex}.v2-nav-links a{white-space:nowrap;align-items:center;min-height:44px;display:inline-flex}.v2-nav-links a:hover{color:var(--color-white)}.v2-nav-cta{border:1px solid var(--color-rule);white-space:nowrap;min-height:44px;color:var(--color-white);border-radius:6px;align-items:center;gap:12px;padding:10px 16px;font-size:13px;display:inline-flex}.v2-nav-cta svg{width:16px;height:16px}.v2-nav-cta:hover{border-color:var(--color-blue-light)}.v2-hero{background:var(--color-deep);position:relative}#nav-trigger{width:1px;height:1px;position:absolute;top:80px}.v2-hero-glow{background:radial-gradient(ellipse at center, var(--color-spotlight), var(--color-transparent) 66%);pointer-events:none;width:70%;height:85%;position:absolute;top:8%;right:-12%}.v2-hero-stage{min-height:880px;position:relative}.v2-hero-copy{z-index:var(--z-raised);max-width:720px;padding-top:172px;position:relative}.v2-hero-kicker{color:var(--color-blue-light);letter-spacing:-.025em;align-items:center;gap:10px;margin-bottom:24px;font-size:14px;font-weight:550;display:flex}.v2-hero-kicker>span{background:var(--color-blue-light);border-radius:50%;flex-shrink:0;width:5px;height:5px}.v2-hero h1{letter-spacing:-.075em;font-size:clamp(72px,8.3vw,128px);font-weight:850;line-height:1.05}.v2-title-line{animation:v2-title-enter .7s var(--ease-out) both;display:block}.v2-title-line:nth-child(2){animation-delay:90ms}.v2-title-blue{color:var(--color-blue-light)}.v2-hero-subject{font-family:var(--font-display);letter-spacing:-.035em;margin-top:34px;font-size:22px;font-weight:600}.v2-hero-description{color:var(--color-muted);margin-top:14px;font-size:18px;line-height:1.85}.v2-hero-actions{flex-wrap:wrap;align-items:center;gap:24px;margin-top:30px;display:flex}.v2-watch-link{min-height:44px;color:var(--color-muted);white-space:nowrap;align-items:center;gap:8px;font-size:13px;display:inline-flex}.v2-watch-link>svg{width:14px;height:14px}.v2-watch-link:hover{color:var(--color-white)}.v2-play-small{border:1px solid var(--color-rule);width:25px;height:25px;color:var(--color-white);border-radius:50%;place-items:center;font-size:9px;display:grid}.v2-hero-bottom{color:var(--color-muted);margin-top:24px;font-size:12px}.v2-hero-portrait{width:1540px;height:790px;position:absolute;bottom:0;right:-165px}.v2-hero-portrait img{object-fit:contain;object-position:bottom right}.v2-hero-portrait:after{content:"";background:linear-gradient(to bottom, var(--color-transparent), var(--color-deep));position:absolute;inset:74% 0 0}.v2-hero-book{width:260px;z-index:var(--z-raised);position:absolute;bottom:76px;right:360px}.v2-teacher-name{z-index:var(--z-raised);flex-direction:column;align-items:flex-end;gap:6px;display:flex;position:absolute;bottom:80px;right:0}.v2-teacher-name>span{color:var(--color-muted);font-size:11px}.v2-teacher-name>strong{font-family:var(--font-display);letter-spacing:.12em;font-size:28px;font-weight:650}.v2-teacher-name>a{color:var(--color-muted);white-space:nowrap;align-items:center;gap:6px;min-height:44px;font-size:11px;display:inline-flex}.v2-teacher-name svg{width:12px;height:12px}.v2-scroll-link{min-height:44px;color:var(--color-muted);align-items:center;gap:22px;font-size:11px;display:inline-flex;position:absolute;bottom:28px;left:0}.v2-scroll-link>span{color:var(--color-blue-light);font-size:19px}.v2-hero-side{font-family:var(--font-display);letter-spacing:.16em;color:var(--color-muted);writing-mode:vertical-rl;font-size:10px;position:absolute;top:142px;right:0}.v2-authority{padding-block:64px 52px}.v2-authority-top{justify-content:space-between;align-items:center;gap:32px;display:flex}.v2-authority-top>h2{letter-spacing:-.04em;font-size:30px;font-weight:650}.v2-authority-top>p{color:var(--color-muted);font-size:14px;line-height:1.8}.v2-proof-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,.9fr);gap:48px;margin-top:44px;display:grid}.v2-proof-item{border-top:2px solid var(--color-ink);min-width:0;padding-top:24px}.v2-proof-label{font-family:var(--font-display);letter-spacing:.1em;font-size:11px;font-weight:650}.v2-proof-item>strong{font-family:var(--font-display);letter-spacing:-.065em;margin-top:18px;font-size:58px;font-weight:800;line-height:1.18;display:block}.v2-proof-mega>strong>span,.v2-proof-dot{color:var(--color-blue)}.v2-proof-rank>strong{color:var(--color-blue);margin-top:6px;font-size:74px}.v2-rank-star{vertical-align:top;padding-top:10px;font-size:26px;display:inline-block}.v2-proof-item>p{color:var(--color-muted);margin-top:18px;font-size:15px;line-height:1.8}.v2-proof-item>a{white-space:nowrap;align-items:center;gap:10px;min-height:44px;margin-top:14px;font-size:12px;font-weight:550;display:inline-flex}.v2-proof-item>a svg{width:13px;height:13px;color:var(--color-blue)}.v2-proof-note{color:var(--color-muted);word-break:keep-all;margin-top:30px;font-size:12px;line-height:1.8}.v2-story{padding-block:116px 132px}.v2-story-intro{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);align-items:end;gap:28px 64px;margin-bottom:72px;display:grid}.v2-section-label{letter-spacing:-.015em;color:var(--color-accent);font-size:13px;font-weight:550}.v2-story-intro>.v2-section-label{grid-column:1/-1}.v2-section-title{letter-spacing:-.065em;font-size:clamp(42px,5vw,80px);font-weight:800;line-height:1.2}.v2-section-title>span{color:var(--color-accent)}.v2-section-description{color:var(--color-muted);word-break:keep-all;font-size:18px;line-height:1.85}.v2-story-intro>.v2-section-description{justify-self:end;padding-bottom:8px}.v2-pedagogy{background:var(--color-deep);position:relative}.v2-pedagogy-stage{padding-block:128px 88px;position:relative}.v2-pedagogy-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:48px;display:grid}.v2-pedagogy-copy>.v2-section-title{margin-top:24px;font-size:clamp(40px,4.6vw,66px)}.v2-pedagogy-copy>.v2-section-description{margin-top:28px}.v2-learning-steps{gap:24px;margin:40px 0 24px;padding:0;list-style:none;display:grid}.v2-learning-steps li{align-items:flex-start;gap:18px;display:flex}.v2-learning-steps li>span{color:var(--color-blue-light);padding-top:5px;font-size:11px}.v2-learning-steps strong{font-size:17px;font-weight:550}.v2-learning-steps p{color:var(--color-muted);margin-top:4px;font-size:14px;line-height:1.7}.v2-text-link{min-height:44px;color:var(--color-blue-light);border-bottom:1px solid var(--color-rule);white-space:nowrap;align-items:center;gap:22px;font-size:14px;display:inline-flex}.v2-text-link>svg{width:16px;height:16px}.v2-open-book{width:min(100%,560px);min-width:0}.v2-book-caption{color:var(--color-muted);text-align:center;margin-top:44px;font-size:11px}.v2-learning,.v2-roadmap,.v2-textbook,.v2-formats,.v2-faq{padding-block:112px}.v2-split-head{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:end;gap:48px;margin-bottom:64px;display:grid}.v2-split-head>.v2-section-description{justify-self:end;padding-bottom:5px}.v2-path-scene{perspective:1200px;justify-content:space-between;align-items:center;gap:16px;padding-block:8px 52px;display:flex}.v2-path-item{background:var(--color-paper-2);border:1px solid var(--color-rule-soft);box-shadow:0 12px 22px var(--color-shadow);border-radius:8px;flex:1;min-width:0;padding:22px 28px}.v2-path-item>span{font-family:var(--font-display);color:var(--color-blue);letter-spacing:.14em;font-size:10px;font-weight:650;display:block}.v2-path-item>strong{font-family:var(--font-display);letter-spacing:-.035em;margin-top:10px;font-size:24px;font-weight:650;line-height:1.4;display:block}.v2-path-item>small{color:var(--color-muted);margin-top:8px;font-size:12px;display:block}.v2-path-arrow{color:var(--color-blue);font-size:20px}.v2-roadmap[data-motion-enabled=true][data-motion-continuous=true] .v2-path-item:first-of-type{transform:translateY(calc((1 - var(--motion-progress,1)) * 30px)) rotateY(calc((1 - var(--motion-progress,1)) * -14deg))}.v2-roadmap[data-motion-enabled=true][data-motion-continuous=true] .v2-path-item:nth-of-type(2){transform:translateY(calc((1 - var(--motion-progress,1)) * -26px)) rotateY(calc((1 - var(--motion-progress,1)) * 8deg))}.v2-roadmap[data-motion-enabled=true][data-motion-continuous=true] .v2-path-item:nth-of-type(3){transform:translateY(calc((1 - var(--motion-progress,1)) * 42px)) rotateY(calc((1 - var(--motion-progress,1)) * 14deg))}.v2-textbook-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:88px;display:grid}.v2-textbook-grid .v2-section-title{margin-top:22px}.v2-textbook-grid .v2-section-description{margin-top:28px;font-size:17px}.v2-subjects{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.v2-subjects>span{border:1px solid var(--color-rule);border-radius:4px;padding:8px 12px;font-size:12px;font-weight:550}.v2-small-note{color:var(--color-muted);margin-top:14px;font-size:11px}.v2-classroom-paper{background:var(--color-paper-2);min-width:0;color:var(--color-sheet-ink);box-shadow:0 22px 40px var(--color-shadow);border:1px solid var(--color-rule-soft);padding:40px;position:relative;transform:rotate(-4deg)}.v2-paper-heading{font-size:10px;font-family:var(--font-display);border-bottom:1px solid var(--color-rule);justify-content:space-between;align-items:center;gap:16px;padding-bottom:20px;display:flex}.v2-paper-heading>span:first-child{letter-spacing:.12em;font-weight:650}.v2-classroom-paper h3{letter-spacing:-.05em;margin-top:28px;font-size:48px;font-weight:750;line-height:1.17}.v2-classroom-paper h3>span{color:var(--color-blue)}.v2-classroom-paper>p{color:var(--color-muted);margin-top:20px;font-size:15px;line-height:1.7}.v2-paper-sentence{font-family:var(--font-display);border-block:1px solid var(--color-rule);margin-top:36px;padding-block:20px;font-size:20px;font-weight:500}.v2-paper-sentence>span{color:var(--color-blue);font-weight:650}.v2-paper-process{justify-content:space-between;align-items:center;gap:8px;margin-top:22px;font-size:11px;display:flex}.v2-paper-process>span{white-space:nowrap}.v2-paper-process svg{width:16px;height:16px;color:var(--color-blue)}.v2-two-goals{border-top:1px solid var(--color-rule);grid-template-columns:minmax(0,1fr) 160px minmax(0,1fr);align-items:center;gap:44px;margin-top:112px;padding-top:60px;display:grid}.v2-two-goals>div>span{color:var(--color-muted);font-size:13px}.v2-two-goals h3{letter-spacing:-.05em;color:var(--color-blue);margin-top:18px;font-size:62px;font-weight:750;line-height:1.2}.v2-two-goals p{color:var(--color-muted);margin-top:20px;font-size:16px;line-height:1.85}.v2-goal-link{color:var(--color-muted);flex-direction:column;justify-content:center;align-items:center;gap:20px;font-size:13px;display:flex}.v2-goal-link>span{background:var(--color-rule);width:1px;height:44px}.v2-faq .faq-heading>.v2-section-title{font-size:44px;line-height:1.25}.v2-faq .v2-section-description{margin-top:26px;font-size:17px}.v2-faq .faq-item summary{padding-block:28px;font-size:16px}.v2-faq .faq-item p{font-size:15px;line-height:1.85}.v2-final{background:var(--color-deep);padding-block:128px;position:relative}.v2-final-grid{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);align-items:center;gap:80px;display:grid}.v2-final-copy{z-index:var(--z-raised);position:relative}.v2-final-copy h2{letter-spacing:-.065em;margin-top:22px;font-size:clamp(48px,5.8vw,88px);font-weight:800;line-height:1.13}.v2-final-copy h2>span{color:var(--color-blue-light)}.v2-final-copy .v2-section-description{margin-top:26px;font-size:17px}.v2-final .button{margin-top:34px}.v2-final-note{color:var(--color-muted);margin-top:16px;font-size:11px;display:block}.v2-converge-visual{justify-self:end;width:min(100%,440px)}.v2-footer{background:var(--color-deep);border-top:1px solid var(--color-rule-soft)}.site-v2 .mobile-cta{background:var(--color-deep);color:var(--color-white)}.site-v2 .mobile-cta .button{background:var(--color-blue);color:var(--color-white);gap:12px;min-height:44px;padding:10px 14px;font-size:12px}@keyframes v2-title-enter{0%{transform:translateY(24px)}to{transform:translateY(0)}}@keyframes v2-row-enter{0%{transform:translateY(16px)}to{transform:translateY(0)}}.v2-story [data-reveal][data-entered=true]{animation:v2-row-enter .52s var(--ease-out) both}@media (min-width:64rem) and (min-height:700px){.v2-pedagogy{min-height:180svh}.v2-pedagogy-stage{flex-direction:column;justify-content:center;min-height:calc(100svh - 88px);padding-block:72px 48px;display:flex;position:sticky;top:88px}}@media (max-width:74.99rem) and (min-width:48rem){.v2-hero-stage{min-height:800px}.v2-hero-copy{padding-top:162px}.v2-hero h1{font-size:88px}.v2-hero-portrait{width:1280px;height:656px;right:-112px}.v2-hero-book{width:190px;bottom:50px;right:250px}.v2-teacher-name>span{text-align:right;max-width:180px;font-size:10px}.v2-hero-actions{gap:18px}.v2-hero-description{font-size:16px}.v2-hero-subject{font-size:19px}.v2-nav-links{gap:24px;font-size:12px}.v2-nav{padding-inline:8px}.v2-proof-grid{gap:28px}.v2-proof-item>strong{font-size:44px}.v2-proof-rank>strong{font-size:60px}.v2-proof-item>p{font-size:13px}.v2-section-title{font-size:56px}.v2-section-description{font-size:16px}.v2-pedagogy-grid{gap:24px}.v2-pedagogy-copy>.v2-section-title{font-size:46px}.v2-textbook-grid{gap:56px}.v2-classroom-paper{padding:30px}.v2-classroom-paper h3{font-size:36px}.v2-paper-sentence{font-size:18px}.v2-final-grid{gap:40px}.v2-final-copy h2{font-size:64px}.v2-two-goals{grid-template-columns:minmax(0,1fr) 100px minmax(0,1fr);gap:24px}.v2-two-goals h3{font-size:50px}}@media (max-width:63.99rem){.v2-pedagogy-grid{grid-template-columns:minmax(0,1fr)}.v2-pedagogy-copy>.v2-section-title{font-size:54px}.v2-open-book{justify-self:center;width:min(100%,420px);margin-top:32px}.v2-book-caption{margin-top:24px}.v2-hero-book{width:180px;bottom:60px;right:190px}.v2-hero-kicker{font-size:12px}}@media (max-width:47.99rem){.v2-header{padding-top:8px}.v2-nav{gap:16px;height:72px;padding-inline:0}.v2-nav:before{border-radius:8px;inset:0 -10px}.v2-nav-links{display:none}.v2-header .wordmark-name{font-size:25px}.v2-header .wordmark-sub{font-size:10px}.v2-nav-cta{gap:8px;padding:8px 10px;font-size:12px}.v2-hero-stage{min-height:960px}.v2-hero-copy{padding-top:118px}.v2-hero-kicker{gap:8px;margin-bottom:22px;font-size:11px}.v2-hero h1{letter-spacing:-.065em;font-size:clamp(68px,18vw,94px);line-height:1.08}.v2-hero-subject{margin-top:22px;font-size:17px}.v2-hero-description{margin-top:10px;font-size:15px;line-height:1.8}.v2-hero-actions{flex-direction:column;align-items:flex-start;gap:12px;margin-top:24px}.site-v2 .v2-hero-actions .button{min-height:54px;padding-inline:20px;font-size:14px}.v2-watch-link{font-size:12px}.v2-hero-bottom{display:none}.v2-hero-portrait{width:890px;height:456px;bottom:0;right:calc(50% - 330px)}.v2-hero-glow{width:120%;height:60%;top:35%;right:-25%}.v2-hero-book{width:144px;bottom:130px;left:-14px;right:auto}.v2-teacher-name{align-items:flex-start;gap:3px;bottom:50px;left:0;right:auto}.v2-teacher-name>span{max-width:160px;font-size:9px}.v2-teacher-name>strong{font-size:22px}.v2-teacher-name>a{min-height:36px;font-size:10px}.v2-scroll-link,.v2-hero-side{display:none}.v2-authority{padding-block:44px}.v2-authority-top{align-items:flex-start;gap:20px}.v2-authority-top>h2{font-size:23px}.v2-authority-top>p{font-size:11px}.v2-proof-grid{grid-template-columns:minmax(0,1fr);gap:30px;margin-top:34px}.v2-proof-item{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:center;gap:4px 20px;padding-top:20px;display:grid}.v2-proof-label{grid-column:1;font-size:10px}.v2-proof-item>strong{grid-area:2/1/4;margin-top:4px;font-size:42px}.v2-proof-rank>strong{font-size:56px}.v2-proof-item>p{grid-area:1/2/3;margin-top:0;font-size:11px}.v2-proof-item>a{grid-area:3/2;margin-top:2px;font-size:11px}.v2-rank-star{padding-top:6px;font-size:20px}.v2-proof-note{margin-top:24px;font-size:10px}.v2-story{padding-block:72px 80px}.v2-story-intro{grid-template-columns:minmax(0,1fr);gap:18px;margin-bottom:40px}.v2-story-intro>.v2-section-description{justify-self:start;padding:0}.v2-section-label{font-size:12px}.v2-section-title{font-size:clamp(38px,10.5vw,52px);line-height:1.23}.v2-section-description{font-size:16px;line-height:1.85}.v2-pedagogy-stage{padding-block:80px 64px}.v2-pedagogy-grid{gap:16px}.v2-pedagogy-copy>.v2-section-title{margin-top:20px;font-size:36px}.v2-pedagogy-copy>.v2-section-description{margin-top:24px}.v2-learning-steps{gap:18px;margin-top:30px}.v2-learning-steps strong{font-size:16px}.v2-learning-steps p{font-size:13px}.v2-open-book{margin-top:24px}.v2-book-caption{font-size:10px}.v2-learning,.v2-roadmap,.v2-textbook,.v2-formats,.v2-faq{padding-block:76px}.v2-split-head{grid-template-columns:minmax(0,1fr);gap:24px;margin-bottom:40px}.v2-split-head>.v2-section-description{justify-self:start;padding:0}.v2-path-scene{gap:8px;padding-bottom:30px}.v2-path-item{box-shadow:none;border-radius:4px;padding:14px 10px}.v2-path-item>span{letter-spacing:.08em;font-size:8px}.v2-path-item>strong{white-space:nowrap;margin-top:6px;font-size:15px}.v2-path-item>small{display:none}.v2-path-arrow{font-size:13px}.v2-textbook-grid{grid-template-columns:minmax(0,1fr);gap:54px}.v2-textbook-grid .v2-section-title{margin-top:18px}.v2-textbook-grid .v2-section-description{margin-top:24px;font-size:15px}.v2-subjects{gap:8px;margin-top:24px}.v2-subjects>span{padding:6px 8px;font-size:10px}.v2-classroom-paper{margin-inline:6px;padding:28px 24px;transform:rotate(-3deg)}.v2-paper-heading{gap:8px;padding-bottom:16px;font-size:8px}.v2-classroom-paper h3{margin-top:22px;font-size:34px}.v2-classroom-paper>p{font-size:13px}.v2-paper-sentence{margin-top:26px;padding-block:16px;font-size:16px}.v2-paper-process{gap:6px;font-size:10px}.v2-paper-process svg{width:12px;height:12px}.v2-two-goals{grid-template-columns:minmax(0,1fr);gap:28px;margin-top:70px;padding-top:32px}.v2-two-goals h3{margin-top:12px;font-size:45px}.v2-two-goals p{margin-top:16px;font-size:15px}.v2-goal-link{flex-direction:row;justify-content:flex-start;gap:16px;font-size:11px}.v2-goal-link>span{width:36px;height:1px}.v2-faq .faq-heading>.v2-section-title{font-size:36px}.v2-faq .v2-section-description{margin-top:22px;font-size:15px}.v2-faq .faq-item summary{padding-block:24px;font-size:14px}.v2-faq .faq-item p{font-size:14px}.v2-final{padding-block:80px 64px}.v2-final-grid{grid-template-columns:minmax(0,1fr);gap:42px}.v2-final-copy h2{margin-top:22px;font-size:clamp(44px,12vw,58px)}.v2-final-copy .v2-section-description{margin-top:22px;font-size:15px}.v2-final-note{font-size:10px}.v2-converge-visual{justify-self:center;width:min(100%,300px)}}@media (prefers-reduced-motion:reduce){.v2-title-line,.v2-story [data-reveal][data-entered=true]{animation:none;transform:none}.v2-path-item{transform:none!important}}.v2-nav:before{opacity:1}.v2-header[data-scrolled=true] .v2-nav{transform:translateY(-4px)}.v2-nav{transition:transform var(--dur-short) var(--ease-out)}@media (prefers-reduced-motion:reduce){.v2-header[data-scrolled=true] .v2-nav{transform:none}}@media (max-width:47.99rem){.v2-hero-portrait{right:calc(50% - 290px)}}@media (min-width:48rem) and (max-width:63.99rem){.v2-hero-book{bottom:24px}}.site-v3 .v3-landing{padding-block:100px 64px}.v3-landing-head{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);align-items:center;gap:72px;margin-bottom:72px;display:grid}.v3-landing-head h2{letter-spacing:-.065em;font-size:clamp(44px,4.8vw,72px);font-weight:800;line-height:1.18}.v3-landing-head h2>span{color:var(--color-blue)}.v3-landing-head>div>p{color:var(--color-muted);margin-top:24px;font-size:17px}.v3-landing-head .button{margin-top:30px}.v3-official-portrait{aspect-ratio:1;background:var(--color-ice);border-radius:50% 50% 8px 8px;width:100%;min-width:0;max-width:440px;position:relative}.v3-official-portrait img{object-fit:contain}.v3-official-portrait:after{content:"";background:linear-gradient(to bottom, var(--color-transparent), var(--color-white));pointer-events:none;position:absolute;inset:75% 0 0}.v3-official-portrait figcaption{z-index:1;justify-content:center;display:flex;position:absolute;bottom:-18px;left:0;right:0}.v3-official-portrait figcaption>a{white-space:nowrap;min-height:44px;color:var(--color-muted);align-items:center;gap:8px;font-size:11px;display:inline-flex}.v3-official-portrait figcaption svg{width:12px;height:12px}.site-v3 .v2-proof-item{padding-top:20px}.site-v3 .v2-proof-item>strong{margin-top:14px;font-size:52px}.site-v3 .v2-proof-rank>strong{margin-top:4px;font-size:64px}.site-v3 .v2-proof-item>p{margin-top:14px;font-size:13px}.site-v3 .v2-proof-item>a{margin-top:8px}.site-v3 .v2-story{padding-block:92px}.site-v3 .v2-story-intro{margin-bottom:48px}.site-v3 .v2-section-title{font-size:clamp(42px,4.8vw,72px)}.site-v3 .v2-section-description{font-size:16px}.site-v3 .v2-pedagogy-copy>.v2-section-title{margin-top:0}.v3-study-flow{align-items:center;gap:24px;margin:42px 0 30px;padding:0;list-style:none;display:flex}.v3-study-flow>li{flex-direction:column;align-items:center;gap:14px;display:flex}.v3-study-flow>li>span{background:var(--color-blue);width:62px;height:62px;color:var(--color-white);font-family:var(--font-display);box-shadow:3px 5px 0 var(--color-blue-dark);border-radius:18px;place-items:center;font-size:36px;font-weight:700;display:grid;transform:rotate(-6deg)}.v3-study-flow>li>span>svg{fill:none;width:30px;height:30px;stroke:var(--color-white);stroke-width:2.3px;stroke-linecap:round;stroke-linejoin:round}.v3-study-flow>li>strong{color:var(--color-muted);font-size:13px;font-weight:550}.v3-study-flow>li>svg{width:20px;color:var(--color-blue-light);margin-bottom:24px}.site-v3 .v2-learning,.site-v3 .v2-roadmap,.site-v3 .v2-textbook,.site-v3 .v2-formats,.site-v3 .v2-faq{padding-block:92px}.site-v3 .v2-split-head{align-items:center;margin-bottom:44px}.v3-heading-symbol{justify-self:end;width:180px;margin-right:32px}.v3-goal-visual{justify-self:end;width:min(100%,440px)}.site-v3 .v2-textbook-grid .v2-section-title{margin-top:0}.site-v3 .v2-subjects{align-items:center}.site-v3 .v2-subjects>svg{width:14px;height:14px;color:var(--color-blue)}.v3-goal-line{border-top:1px solid var(--color-rule);font-family:var(--font-display);letter-spacing:-.04em;justify-content:space-between;align-items:center;gap:32px;margin-top:60px;padding-top:36px;font-size:clamp(18px,2.4vw,32px);font-weight:600;display:flex}.v3-goal-line>span,.v3-goal-line>strong{white-space:nowrap}.v3-goal-line>strong{color:var(--color-blue)}.v3-goal-line>svg{width:28px;color:var(--color-blue)}.site-v3 .v2-final-copy h2{font-size:clamp(72px,8.4vw,126px)}.site-v3 .v2-final-copy .v2-section-description{margin-top:22px}@media (min-width:64rem) and (min-height:700px){.site-v3 .v2-pedagogy{min-height:140svh}}@media (max-width:74.99rem){.v3-landing-head{gap:40px}.v3-landing-head h2{font-size:54px}}@media (max-width:47.99rem){.site-v3 .v3-landing{padding-block:64px 48px}.v3-landing-head{grid-template-columns:minmax(0,1fr);gap:42px;margin-bottom:46px}.v3-landing-head h2{font-size:clamp(32px,8.8vw,44px)}.v3-landing-head>div>p{margin-top:18px;font-size:14px}.v3-landing-head .button{min-height:52px;margin-top:24px;padding-inline:20px;font-size:13px}.v3-official-portrait{justify-self:center;max-width:300px}.site-v3 .v2-proof-grid{gap:24px}.site-v3 .v2-proof-item>strong{font-size:40px}.site-v3 .v2-proof-rank>strong{font-size:54px}.site-v3 .v2-proof-item>p{margin-top:0;font-size:11px}.site-v3 .v2-proof-item>a{margin-top:0}.site-v3 .v2-story{padding-block:64px}.site-v3 .v2-story-intro{gap:16px;margin-bottom:32px}.site-v3 .v2-section-title{font-size:clamp(35px,9.5vw,48px)}.site-v3 .v2-section-description{font-size:14px}.v3-study-flow{gap:16px;margin-block:32px}.v3-study-flow>li>span{border-radius:12px;width:48px;height:48px;font-size:30px}.v3-study-flow>li>strong{font-size:11px}.v3-study-flow>li>svg{width:16px}.site-v3 .v2-pedagogy-stage{padding-block:64px 48px}.site-v3 .v2-learning,.site-v3 .v2-roadmap,.site-v3 .v2-textbook,.site-v3 .v2-formats,.site-v3 .v2-faq{padding-block:64px}.site-v3 .v2-split-head{grid-template-columns:minmax(0,1fr);gap:20px;margin-bottom:32px}.v3-heading-symbol{justify-self:start;width:140px;margin:0}.v3-goal-visual{justify-self:center;width:min(100%,300px)}.site-v3 .v2-textbook-grid{gap:36px}.v3-goal-line{gap:9px;margin-top:32px;padding-top:24px;font-size:15px}.v3-goal-line>svg{width:13px}.site-v3 .v2-final-copy h2{margin-top:0;font-size:clamp(64px,18vw,88px)}}.site-v5 .v2-nav:before{opacity:1;border-radius:4px}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav{color:var(--color-deep)}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav:before{background:var(--color-white);border-color:var(--color-transparent)}.site-v5 .v2-header:not([data-scrolled=true]) .wordmark-dot{color:var(--color-blue)}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav-links{color:var(--color-sheet-muted)}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav-links a:hover{color:var(--color-blue)}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav-cta{color:var(--color-deep);border-color:var(--color-sheet-rule)}.site-v5 .v2-header:not([data-scrolled=true]) .v2-nav-cta:hover{color:var(--color-blue);border-color:var(--color-blue)}.v7-authority{border-top:1px solid var(--color-sheet-rule);border-bottom:1px solid var(--color-sheet-rule);padding-block:56px}.v7-proof-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;display:grid}.v7-proof{justify-content:space-between;align-items:center;gap:24px;min-height:60px;display:flex}.v7-proof+.v7-proof{border-left:1px solid var(--color-sheet-rule);padding-left:48px}.v7-proof>strong{font-family:var(--font-display);letter-spacing:-.055em;white-space:nowrap;font-size:clamp(26px,3vw,44px);font-weight:800;line-height:1.2}.v7-proof>span{white-space:nowrap;align-items:center;gap:12px;font-size:15px;display:inline-flex}.v7-proof svg{width:16px;height:16px;color:var(--color-blue)}.v7-proof:hover{color:var(--color-blue)}.v7-proof:focus-visible{outline:3px solid var(--color-blue);outline-offset:8px}.v7-care-head h2{font-family:var(--font-display);letter-spacing:-.065em;overflow-wrap:anywhere;min-width:0;font-size:clamp(36px,7.3vw,100px);font-weight:850;line-height:1.1}.v7-care-head h2>span{color:var(--color-blue)}@media (max-width:1023px){.v7-proof{display:block}.v7-proof>span{margin-top:12px;display:flex}}@media (max-width:767px){.v7-authority{padding-block:32px}.v7-proof-grid{gap:24px}.v7-proof+.v7-proof{padding-left:24px}.v7-proof>strong{font-size:26px}.v7-proof>span{gap:8px;font-size:12px}.v7-care-head h2{font-size:clamp(34px,8.7vw,56px)}}.site-v8 .v2-story{border-bottom:1px solid var(--color-sheet-rule);padding-block:64px}@media (max-width:767px){.site-v8 .v2-story{padding-block:44px}}.site-v5 .v2-nav{font-family:var(--font-body)}.site-v5 .v2-nav-links,.site-v5 .v2-nav-cta{font-size:var(--text-secondary);letter-spacing:-.025em;font-weight:600;line-height:1.4}.site-v5 .v2-nav-cta{gap:14px;min-height:48px;padding:12px 20px}.site-v5 .v2-header .wordmark-sub{letter-spacing:.35em;font-size:12px}.site-v5 .v2-section-description{font-size:var(--text-secondary);line-height:1.7}@media (max-width:959px){.site-v5 .v2-nav-links{display:none}}@media (max-width:767px){.site-v5 .v2-nav-cta{font-size:var(--text-secondary-compact);gap:10px;padding:10px 14px}.site-v5 .v2-header .wordmark-sub{font-size:11px}.site-v5 .v2-section-description{font-size:var(--text-secondary-compact)}}.site-v5 .v3-study-flow>li{gap:18px}.site-v5 .v3-study-flow>li>strong{font-size:var(--text-feature-label);font-weight:600;line-height:1.4}.site-v5 .v2-pedagogy-copy>.v2-text-link{font-size:var(--text-feature-label);gap:28px;min-height:56px;font-weight:600}.site-v5 .v2-pedagogy-copy>.v2-text-link svg{width:24px;height:24px}@media (max-width:767px){.site-v5 .v3-study-flow>li{gap:14px}.site-v5 .v3-study-flow>li>strong,.site-v5 .v2-pedagogy-copy>.v2-text-link{font-size:var(--text-feature-label-compact)}.site-v5 .v2-pedagogy-copy>.v2-text-link{gap:22px;min-height:52px}}