@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/fef07dbb0973bf53-s.12tyk43_3sh9u.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.0jzbimsg8vl84.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/53b9e256198e5412-s.0-wfv7uh4i7h9.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.0nx0ww8fni_q3.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.09~u27dqhyhd6.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_a71539c9-module__T19VSG__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_a71539c9-module__T19VSG__variable{--font-geist-sans:"Geist", "Geist Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5ce348bf30bf5439-s.0zgw-jeven.3w.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.0wkzw~je483f-.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6306c77e7c8268e4-s.0rhz0arwfsn~5.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7d817b4c03b0c5f1-s.0l76wvqk9d84w.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.0k4k9394f2q-k.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.08e28id.o-okb.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}.geist_mono_8d43a2aa-module__8Li5zG__className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}.geist_mono_8d43a2aa-module__8Li5zG__variable{--font-geist-mono:"Geist Mono", "Geist Mono Fallback"}
:root{--ink:#14251f;--ink-soft:#52615b;--paper:#f4f0e7;--paper-deep:#ebe5d8;--white:#fffdf8;--green:#146b4d;--lime:#c9ef77;--line:#14251f2b}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--font-geist-sans), Arial, Helvetica, sans-serif;margin:0}a{color:inherit;text-decoration:none}.shell{width:min(1180px,100% - 48px);margin-inline:auto}.site-header{justify-content:space-between;align-items:center;max-width:1360px;height:84px;margin:0 auto;padding:0 40px;display:flex}.brand{letter-spacing:-.025em;align-items:center;gap:11px;font-size:15px;font-weight:760;display:inline-flex}.brand-mark{background:var(--ink);color:var(--lime);letter-spacing:.04em;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:10px;display:inline-flex}.brand-mark-image{background:#fbf8ed;border:1px solid #14251f33;position:relative;overflow:hidden}.brand-mark-image img{width:160%;max-width:none;height:160%;position:absolute;top:70%;left:50%;transform:translate(-50%,-50%)}nav{align-items:center;gap:34px;display:flex}nav a{color:#33443d;font-size:13px;font-weight:600}nav a:hover{color:var(--green)}.hero{grid-template-columns:minmax(0,1.15fr) minmax(360px,.85fr);align-items:center;gap:80px;min-height:650px;padding:54px 0 92px;display:grid}.eyebrow{color:#52615b;letter-spacing:.13em;text-transform:uppercase;align-items:center;gap:10px;margin:0 0 24px;font-size:11px;font-weight:750;display:flex}.eyebrow span{background:var(--green);border-radius:50%;width:7px;height:7px}.hero h1{letter-spacing:-.065em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(54px,6.7vw,94px);font-weight:400;line-height:.94}.hero h1 em{color:var(--green);font-weight:400}.hero-lead{color:var(--ink-soft);max-width:620px;margin:30px 0 0;font-size:17px;line-height:1.72}.hero-actions{flex-wrap:wrap;gap:14px;margin-top:36px;display:flex}.button{border-radius:999px;justify-content:center;align-items:center;min-height:50px;padding:0 22px;font-size:13px;font-weight:720;display:inline-flex}.button-primary{background:var(--ink);color:#fff}.button-primary:hover{background:var(--green)}.button-quiet{border:1px solid var(--line);gap:10px}.button-quiet:hover{background:var(--white)}.hero-brand-art{aspect-ratio:1;background:#fbf8ed;border:1px solid #14251f1f;border-radius:30px;justify-self:end;width:100%;max-width:480px;margin:0;overflow:hidden;transform:rotate(1.2deg);box-shadow:0 35px 80px #14251f2e}.hero-brand-art img{object-fit:cover;width:100%;height:100%;display:block}.software-section{background:var(--ink);color:#fff;padding:104px 0 112px}.section-heading{grid-template-columns:1fr 360px;align-items:end;gap:80px;margin-bottom:48px;display:grid}.section-heading .eyebrow{color:#9cb1a9}.section-heading .eyebrow span{background:var(--lime)}.section-heading h2,.about-section h2{letter-spacing:-.055em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(38px,5vw,64px);font-weight:400;line-height:1}.section-heading>p{color:#aabbb4;margin:0;font-size:14px;line-height:1.7}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.product-leaflet{--leaflet-bg:#fff8e8;background:var(--leaflet-bg);color:var(--ink);flex-direction:column;min-height:500px;padding:25px;transition:transform .22s,box-shadow .22s;display:flex;position:relative;overflow:hidden}.product-leaflet:hover{transform:translateY(-8px)rotate(-.35deg);box-shadow:0 22px 50px #00000038}.product-leaflet.sun{--leaflet-bg:#ffce58}.product-leaflet.aurora{--leaflet-bg:#aeb9ff}.product-leaflet.ember{--leaflet-bg:#ff9a73}.product-leaflet.stem{--leaflet-bg:var(--lime)}.product-leaflet.steel{--leaflet-bg:#c5d3da}.product-leaflet.sky{--leaflet-bg:#9bd9f2}.product-leaflet.cosmos{--leaflet-bg:#8dd4e8}.fold{border-color:transparent var(--ink) transparent transparent;border-style:solid;border-width:0 48px 48px 0;position:absolute;top:0;right:0}.product-topline{justify-content:space-between;align-items:center;gap:12px;padding-right:35px;display:flex}.product-number,.product-label{letter-spacing:.1em;text-transform:uppercase;font-size:9px;font-weight:800}.product-label{text-align:right}.product-art{aspect-ratio:16/10;background:var(--ink);border:1px solid #14251f8c;margin:34px 0 35px;position:relative;box-shadow:6px 6px #14251f29}.product-shot{object-fit:cover;object-position:center;width:100%;height:100%;display:block}.product-leaflet.sky .product-art{background:#082b42}.product-leaflet.sky .product-shot{object-fit:contain}.product-leaflet.cosmos .product-art{background:#061727}.product-leaflet.cosmos .product-shot{object-position:center 22%}.product-app-icon{background:var(--ink);border:4px solid var(--leaflet-bg);object-fit:contain;z-index:2;border-radius:14px;width:56px;height:56px;position:absolute;bottom:-24px;left:13px;box-shadow:3px 4px #14251f33}.stem-art{background-color:#f4f0e7;background-image:linear-gradient(#14251f14 1px,#0000 1px),linear-gradient(90deg,#14251f14 1px,#0000 1px);background-size:22px 22px;padding:10px}.stem-mini-grid{grid-template-columns:1fr 1fr;gap:6px;height:100%;display:grid}.stem-mini-grid>span{color:#fff;flex-direction:column;justify-content:space-between;min-width:0;padding:9px;display:flex}.stem-mini-grid b{font-family:Georgia,serif;font-size:14px;font-weight:400}.stem-mini-grid small{letter-spacing:.05em;text-overflow:ellipsis;text-transform:uppercase;white-space:nowrap;font-size:6px;font-weight:800;overflow:hidden}.mini-biology{background:#22875b}.mini-chemistry{background:#7657d8}.mini-physics{background:#d5653f}.mini-code{background:#2462a7}.product-app-icon.stem-icon{color:#fff;justify-content:center;align-items:center;font-family:Georgia,serif;font-size:19px;display:flex}.product-copy{margin-top:auto}.product-copy h3{letter-spacing:-.045em;margin:0 0 14px;font-family:Georgia,Times New Roman,serif;font-size:27px;font-weight:400;line-height:1}.product-copy p{margin:0;font-size:12px;line-height:1.6}.product-link{letter-spacing:.08em;text-transform:uppercase;border-top:1px solid #14251f40;justify-content:space-between;align-items:center;margin-top:25px;padding-top:15px;font-size:10px;font-weight:800;display:flex}.studio-work-section{background:#dfe8ff;padding:108px 0 116px}.studio-work-heading{grid-template-columns:1fr 360px;align-items:end;gap:80px;margin-bottom:48px;display:grid}.studio-work-heading h2{letter-spacing:-.055em;max-width:750px;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(38px,5vw,64px);font-weight:400;line-height:1}.studio-work-heading>p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.7}.studio-project-card{color:#fff;background:#0a1120;grid-template-columns:minmax(0,.9fr) minmax(440px,1.1fr);min-height:490px;transition:box-shadow .22s,transform .22s;display:grid;overflow:hidden;box-shadow:18px 20px #14251f21}.studio-project-card:hover{transform:translateY(-5px);box-shadow:24px 28px #14251f29}.studio-project-copy{flex-direction:column;padding:38px 44px 40px;display:flex}.studio-project-topline{color:#9daabd;letter-spacing:.13em;text-transform:uppercase;justify-content:space-between;font-size:8px;font-weight:800;display:flex}.studio-project-copy .eyebrow{color:#60c4e7;margin-top:72px}.studio-project-copy .eyebrow span{background:#f0b84b}.studio-project-copy h3{letter-spacing:-.055em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(34px,4.4vw,56px);font-weight:400;line-height:1}.studio-project-copy>p:not(.eyebrow){color:#b9c4d6;max-width:540px;margin:24px 0 0;font-size:13px;line-height:1.72}.studio-project-tags{flex-wrap:wrap;gap:7px;margin-top:25px;display:flex}.studio-project-tags span{color:#dce5f5;letter-spacing:.08em;text-transform:uppercase;border:1px solid #ffffff38;border-radius:999px;padding:7px 10px;font-size:8px;font-weight:800}.studio-project-copy>strong{letter-spacing:.1em;text-transform:uppercase;border-top:1px solid #fff3;justify-content:space-between;align-items:center;margin-top:auto;padding-top:20px;font-size:10px;display:flex}.studio-project-art{background:#0a1120;min-width:0;margin:0;position:relative;overflow:hidden}.studio-project-art img{object-fit:contain;width:calc(100% - 96px);min-width:0;max-width:none;height:calc(100% - 96px);max-height:none;display:block;position:absolute;inset:48px}.about-section{grid-template-columns:120px .9fr 1fr;gap:48px;padding-top:120px;padding-bottom:120px;display:grid}.about-index{letter-spacing:.14em;margin:6px 0;font-size:9px;font-weight:800}.about-copy{border-left:1px solid var(--line);padding-left:48px}.about-copy p{color:var(--ink-soft);margin:0 0 20px;font-size:15px;line-height:1.75}.text-link{text-transform:uppercase;align-items:center;gap:12px;margin-top:10px;font-size:12px;font-weight:780;display:inline-flex}.text-link:hover{color:var(--green)}footer{border-top:1px solid var(--line)}.footer-inner{grid-template-columns:1fr 1fr 1fr;align-items:center;gap:30px;min-height:116px;font-size:11px;display:grid}.footer-inner p{color:var(--ink-soft);text-align:center}.footer-links{color:var(--ink-soft);justify-content:flex-end;align-items:center;gap:18px;display:flex}.footer-links a:hover{color:var(--green)}.brand-footer{font-size:13px}.brand-footer .brand-mark{width:30px;height:30px}.breadcrumb{letter-spacing:.06em;text-transform:uppercase;flex-wrap:wrap;align-items:center;gap:10px;padding:26px 0 54px;font-size:10px;display:flex}.breadcrumb a{opacity:.68}.breadcrumb a:hover{opacity:1}.breadcrumb b{font-weight:800}.product-hero{color:var(--ink);border-top:1px solid #14251f1f;min-height:650px;padding-bottom:78px}.product-hero.sun{background:#ffce58}.product-hero.aurora{background:#aeb9ff}.product-hero.ember{background:#ff9a73}.product-hero.stem{background:var(--lime)}.product-hero.steel{background:#c5d3da}.product-hero.sky{background:#9bd9f2}.product-hero.cosmos{background:linear-gradient(135deg,#8dd4e8 0%,#aeb9ff 100%)}.product-hero-grid{grid-template-columns:1.1fr .72fr;align-items:center;gap:90px;display:grid}.product-hero-copy h1{letter-spacing:-.065em;max-width:760px;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(48px,6.5vw,86px);font-weight:400;line-height:.95}.product-hero-copy>p:not(.eyebrow){max-width:660px;margin:27px 0 0;font-size:16px;line-height:1.7}.product-platforms{flex-wrap:wrap;gap:8px;margin-top:26px;display:flex}.product-platforms span{letter-spacing:.08em;text-transform:uppercase;border:1px solid #14251f4d;border-radius:999px;padding:8px 11px;font-size:9px;font-weight:800}.hero-store-row{max-width:410px;margin-top:30px}.product-poster{aspect-ratio:4/5;background:var(--ink);color:#fff;flex-direction:column;justify-content:flex-end;width:100%;max-width:390px;padding:28px;display:flex;position:relative;overflow:hidden;transform:rotate(2deg);box-shadow:18px 20px #14251f26}.poster-topline{letter-spacing:.12em;text-transform:uppercase;justify-content:space-between;font-size:8px;font-weight:800;display:flex;position:absolute;top:24px;left:25px;right:25px}.product-poster-icon{background:var(--ink);object-fit:contain;z-index:2;border:5px solid #fff3;border-radius:34px;width:160px;height:160px;position:absolute;top:46%;left:50%;transform:translate(-50%,-50%);box-shadow:0 18px 42px #00000040}.poster-orbit{border:1px solid #ffffff59;border-radius:50%;position:absolute;top:46%;left:50%;transform:translate(-50%,-50%)}.orbit-a{width:245px;height:245px}.orbit-b{width:320px;height:320px}.poster-name{letter-spacing:-.04em;z-index:2;border-top:1px solid #ffffff4d;padding-top:18px;font-family:Georgia,serif;font-size:25px;position:relative}.fact-strip{background:var(--white);border-bottom:1px solid var(--line)}.fact-strip .shell{grid-template-columns:repeat(3,1fr);display:grid}.fact-strip .shell>div{border-right:1px solid var(--line);align-items:baseline;gap:13px;min-height:115px;padding:36px 28px;display:flex}.fact-strip .shell>div:first-child{border-left:1px solid var(--line)}.fact-strip strong{letter-spacing:-.04em;font-family:Georgia,serif;font-size:35px;font-weight:400}.fact-strip span{color:var(--ink-soft);letter-spacing:.06em;text-transform:uppercase;font-size:10px}.product-overview{grid-template-columns:1fr 1fr;gap:110px;padding-top:112px;padding-bottom:112px;display:grid}.product-overview h2,.feature-heading h2,.availability-section h2,.story-section h2,.stem-story h2,.support-note h2{letter-spacing:-.055em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(38px,4.5vw,60px);font-weight:400;line-height:1.02}.overview-copy{border-left:1px solid var(--line);padding-left:55px}.overview-copy p{color:var(--ink-soft);margin:0 0 23px;font-size:15px;line-height:1.8}.feature-section{background:var(--paper-deep);padding:102px 0 112px}.feature-heading{grid-template-columns:220px 1fr;gap:60px;margin-bottom:58px;display:grid}.feature-grid{border-bottom:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid}.feature-grid article{min-height:280px;padding:27px 25px 32px}.feature-grid article+article{border-left:1px solid var(--line)}.feature-grid article>span,.principle-grid article>span{letter-spacing:.13em;font-size:9px;font-weight:800}.feature-grid h3,.principle-grid h3{letter-spacing:-.035em;margin:76px 0 15px;font-family:Georgia,serif;font-size:24px;font-weight:400}.feature-grid p,.principle-grid p{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.65}.availability-section{grid-template-columns:1fr 1fr;align-items:start;gap:100px;padding-top:112px;padding-bottom:112px;display:grid}.availability-section>div:first-child>p:last-child{color:var(--ink-soft);max-width:500px;font-size:14px;line-height:1.75}.store-list{flex-direction:column;gap:12px;display:flex}.store-button{background:var(--white);border:1px solid var(--line);grid-template-columns:40px 1fr auto;align-items:center;gap:15px;width:100%;min-height:78px;padding:13px 18px;transition:border-color .18s,transform .18s;display:grid}.store-button:hover{border-color:var(--ink);transform:translate(4px)}.store-button.disabled{color:#708078;cursor:default;background:#fff6}.store-button.disabled:hover{border-color:var(--line);transform:none}.store-icon{background:var(--ink);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;font-size:19px;display:flex}.store-icon.google{background:#257849}.store-icon.apple{background:#2f3432}.store-icon.github{background:#412c6f}.store-button strong{font-size:13px;display:block}.store-button small{color:var(--ink-soft);margin-top:4px;font-size:10px;display:block}.store-button i{letter-spacing:.06em;text-transform:uppercase;font-size:10px;font-style:normal;font-weight:800}.source-link{letter-spacing:.06em;text-transform:uppercase;justify-content:space-between;align-items:center;padding:15px 4px;font-size:11px;font-weight:750;display:flex}.source-link:hover{color:var(--green)}.project-hero{border-top:1px solid #14251f1f;min-height:650px;padding-bottom:80px}.quality3ds-hero{background:#dfe8ff}.project-hero-grid{grid-template-columns:1fr minmax(420px,.95fr);align-items:center;gap:72px;display:grid}.project-hero-copy h1{letter-spacing:-.065em;max-width:720px;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(48px,6.4vw,84px);font-weight:400;line-height:.95}.project-hero-copy>p:not(.eyebrow){color:#394b5e;max-width:680px;margin:27px 0 0;font-size:16px;line-height:1.72}.project-hero-art{aspect-ratio:1200/630;background:#0a1120;border:1px solid #14251f40;width:100%;margin:0;overflow:hidden;transform:rotate(1.5deg);box-shadow:18px 20px #14251f24}.project-hero-art img{object-fit:contain;width:100%;height:100%;display:block}.store-icon.quality3ds{background:linear-gradient(135deg,#3cb9dc,#715ee8);font-size:10px;font-weight:850}.more-software{border-top:1px solid var(--line);padding-top:35px;padding-bottom:104px}.more-software>p{letter-spacing:.1em;text-transform:uppercase;font-size:10px;font-weight:800}.more-software>div{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px;display:grid}.more-software a{background:var(--white);grid-template-columns:44px 1fr auto;align-items:center;gap:13px;min-height:74px;padding:14px;display:grid}.more-software a:hover{box-shadow:0 12px 28px #14251f14}.more-software a>span{background:#ddd;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-family:Georgia,serif;display:flex}.more-product-icon{background:var(--ink);object-fit:contain;border-radius:11px;width:44px;height:44px}.more-software .sun{background:#ffce58}.more-software .aurora{background:#aeb9ff}.more-software .ember{background:#ff9a73}.more-software .stem{background:var(--lime)}.more-software .steel{background:#c5d3da}.more-software .sky{background:#9bd9f2}.more-software strong{font-size:12px}.more-software i{font-style:normal}.stem-hub{padding:116px 0 20px}.stem-hub-intro{grid-template-columns:1fr 420px;align-items:end;gap:80px;margin-bottom:50px;display:grid}.stem-hub-intro h2{letter-spacing:-.055em;margin:0;font-family:Georgia,serif;font-size:clamp(42px,5vw,66px);font-weight:400;line-height:.98}.stem-hub-intro>p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.75}.track-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.track-card{background:var(--white);border:1px solid var(--line);flex-direction:column;min-height:650px;padding:27px;display:flex;position:relative;overflow:hidden}.track-card.biology{--track:#22875b;--track-bg:#d9f0c0}.track-card.chemistry{--track:#7657d8;--track-bg:#e2dcff}.track-card.physics{--track:#d5653f;--track-bg:#ffdac8}.track-card.computer-science{--track:#2462a7;--track-bg:#d8eaff}.track-card-top{letter-spacing:.12em;text-transform:uppercase;justify-content:space-between;font-size:9px;font-weight:800;display:flex}.track-visual{background-color:var(--track-bg);background-image:linear-gradient(#14251f12 1px,#0000 1px),linear-gradient(90deg,#14251f12 1px,#0000 1px);background-size:28px 28px;justify-content:center;align-items:center;height:188px;margin:26px 0 29px;display:flex;position:relative;overflow:hidden}.track-visual>span{background:var(--track);color:#fff;letter-spacing:-.03em;z-index:2;border-radius:50%;justify-content:center;align-items:center;width:112px;height:112px;font-family:Georgia,serif;font-size:19px;display:flex;position:relative}.track-visual i,.track-visual b{border:1px solid var(--track);border-radius:50%;width:270px;height:160px;position:absolute;transform:rotate(35deg)}.track-visual b{width:160px;height:270px;transform:rotate(-35deg)}.biology .track-visual>span{border-radius:53% 47% 61% 39%/47% 58% 42% 53%}.biology .track-visual i{border-width:2px;width:176px;height:145px;transform:rotate(-8deg)}.chemistry .track-visual:after{background:var(--track);box-shadow:-95px 4px 0 -3px var(--track), 82px -38px 0 -2px var(--track);content:"";border-radius:50%;width:12px;height:12px;position:absolute}.physics .track-visual>span{border-radius:8px}.physics .track-visual i,.physics .track-visual b{border:0;border-top:3px solid var(--track);border-radius:0;width:125px;height:0;transform:none}.physics .track-visual i{left:38px}.physics .track-visual b{right:38px}.computer-science .track-visual>span{font-family:var(--font-geist-mono), monospace;border-radius:8px}.computer-science .track-visual i,.computer-science .track-visual b{border-radius:0;width:98px;height:98px;transform:rotate(45deg)}.track-copy>p:first-child{color:var(--track);letter-spacing:.14em;text-transform:uppercase;margin:0 0 13px;font-size:9px;font-weight:850}.track-copy h3{letter-spacing:-.045em;margin:0;font-family:Georgia,serif;font-size:clamp(29px,3vw,39px);font-weight:400;line-height:1.03}.track-copy>p:last-child{color:var(--ink-soft);max-width:440px;margin:17px 0 25px;font-size:12px;line-height:1.65}.track-lessons{border-top:1px solid var(--line);margin-top:auto}.track-lessons>div{border-bottom:1px solid var(--line);grid-template-columns:92px 1fr;align-items:center;gap:12px;min-height:49px;display:grid}.track-lessons span{color:var(--track);letter-spacing:.1em;font-size:8px;font-weight:850}.track-lessons strong{font-size:11px}.track-lessons .locked{opacity:.48}.track-start{background:var(--track);color:#fff;letter-spacing:.05em;text-transform:uppercase;justify-content:space-between;align-items:center;min-height:60px;margin:22px -27px -27px;padding:0 27px;font-size:11px;font-weight:800;display:flex}.track-start:hover{background:var(--ink)}.learning-promise{background:var(--ink);color:#fff;grid-template-columns:repeat(4,1fr);margin-top:16px;padding:24px;display:grid}.learning-promise span{letter-spacing:.06em;text-transform:uppercase;align-items:center;gap:12px;padding:8px 16px;font-size:10px;font-weight:750;display:flex}.learning-promise span+span{border-left:1px solid #ffffff2e}.learning-promise b{border:1px solid var(--lime);color:var(--lime);border-radius:50%;justify-content:center;align-items:center;width:27px;height:27px;font-size:8px;display:flex}.course-page.biology{--course:#22875b;--course-pale:#d9f0c0}.course-page.chemistry{--course:#7657d8;--course-pale:#e2dcff}.course-page.physics{--course:#d5653f;--course-pale:#ffdac8}.course-page.computer-science{--course:#2462a7;--course-pale:#d8eaff}.course-hero{background:var(--course-pale);border-top:1px solid var(--line);padding-bottom:84px}.course-hero .eyebrow span{background:var(--course)}.course-hero-grid{grid-template-columns:1.12fr .68fr;align-items:center;gap:95px;display:grid}.course-hero h1{letter-spacing:-.065em;max-width:780px;margin:0;font-family:Georgia,serif;font-size:clamp(55px,7vw,92px);font-weight:400;line-height:.93}.course-hero-grid>div:first-child>p:not(.eyebrow){color:var(--ink-soft);max-width:650px;margin:28px 0 0;font-size:16px;line-height:1.7}.course-actions{flex-wrap:wrap;gap:12px;margin-top:31px;display:flex}.course-emblem{aspect-ratio:1;background:var(--ink);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:100%;display:flex;position:relative;overflow:hidden}.course-emblem:before{content:"";background-image:radial-gradient(#fff3 1px,#0000 1px);background-size:18px 18px;position:absolute;inset:0}.course-emblem i,.course-emblem b{border:1px solid #ffffff52;border-radius:50%;width:104%;height:58%;position:absolute;transform:rotate(38deg)}.course-emblem b{width:58%;height:104%;transform:rotate(-38deg)}.course-emblem>span{background:var(--course);z-index:2;border-radius:50%;justify-content:center;align-items:center;width:39%;height:39%;font-family:Georgia,serif;font-size:clamp(20px,3vw,34px);display:flex;position:relative}.course-emblem small{letter-spacing:.14em;text-transform:uppercase;font-size:8px;font-weight:800;position:absolute;bottom:10%}.course-path{padding-top:112px;padding-bottom:112px}.course-path-heading{grid-template-columns:1fr 390px;align-items:end;gap:90px;margin-bottom:52px;display:grid}.course-path-heading h2,.lesson-section-heading h2{letter-spacing:-.055em;margin:0;font-family:Georgia,serif;font-size:clamp(39px,5vw,62px);font-weight:400;line-height:1}.course-path-heading>p{color:var(--ink-soft);margin:0;font-size:15px;line-height:1.7}.course-path-grid{grid-template-columns:repeat(3,1fr);display:grid}.course-path-grid article{border:1px solid var(--line);flex-direction:column;min-height:355px;padding:27px;display:flex;position:relative}.course-path-grid article+article{border-left:0}.course-path-grid article.playable{background:var(--course-pale);border-color:var(--course)}.path-node{border:1px solid var(--line);border-radius:50%;justify-content:center;align-items:center;width:54px;height:54px;margin-bottom:50px;display:flex}.playable .path-node{background:var(--course);border-color:var(--course);color:#fff}.path-node span{letter-spacing:.08em;font-size:10px;font-weight:850}.course-path-grid article>p:first-of-type{color:var(--course);letter-spacing:.12em;text-transform:uppercase;margin:0 0 13px;font-size:8px;font-weight:850}.course-path-grid h3{letter-spacing:-.035em;margin:0 0 14px;font-family:Georgia,serif;font-size:29px;font-weight:400}.course-path-grid article>p:last-of-type{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.65}.course-path-grid article>a,.coming-label{letter-spacing:.1em;text-transform:uppercase;justify-content:space-between;align-items:center;margin-top:auto;padding-top:30px;font-size:9px;font-weight:850;display:flex}.course-path-grid article>a{color:var(--course)}.coming-label{color:var(--ink-soft);opacity:.62}.lesson-section{padding-bottom:118px}.lesson-section-heading{grid-template-columns:185px 1fr 330px;align-items:end;gap:58px;margin-bottom:48px;display:grid}.lesson-section-heading>p:last-child{color:var(--ink-soft);margin:0;font-size:12px;line-height:1.7}.interactive-lesson{background:var(--ink);color:#fff;padding:18px}.lesson-topbar{letter-spacing:.11em;text-transform:uppercase;grid-template-columns:1fr auto 1fr;align-items:center;min-height:45px;font-size:8px;font-weight:800;display:grid}.lesson-topbar strong{letter-spacing:-.02em;text-transform:none;font-family:Georgia,serif;font-size:18px;font-weight:400}.lesson-topbar span:last-child{text-align:right}.lesson-meter{background:#ffffff24;height:4px;margin-bottom:18px;overflow:hidden}.lesson-meter span{background:var(--course);height:100%;transition:width .28s;display:block}.lesson-workspace{grid-template-columns:1.08fr .92fr;min-height:650px;display:grid}.lesson-canvas{background:var(--course-pale);color:var(--ink);min-width:0;overflow:hidden}.lesson-instruction{background:var(--white);color:var(--ink);flex-direction:column;min-width:0;padding:48px;display:flex}.lesson-kicker{color:var(--course);letter-spacing:.14em;text-transform:uppercase;margin:0 0 18px;font-size:9px;font-weight:850}.lesson-instruction h3{letter-spacing:-.045em;margin:0;font-family:Georgia,serif;font-size:clamp(31px,3.2vw,44px);font-weight:400;line-height:1.05}.lesson-prompt,.lesson-complete-panel>p:not(.lesson-kicker){color:var(--ink-soft);margin:18px 0 0;font-size:13px;line-height:1.65}.lesson-choices{flex-direction:column;gap:8px;margin-top:22px;display:flex}.lesson-choices button{border:1px solid var(--line);color:var(--ink);cursor:pointer;font:inherit;text-align:left;background:0 0;align-items:center;gap:12px;min-height:48px;padding:10px 14px;font-size:12px;display:flex}.lesson-choices button:hover,.lesson-choices button.selected{background:var(--course-pale);border-color:var(--course)}.lesson-choices button>span{border:1px solid;border-radius:50%;width:14px;height:14px}.lesson-choices button.correct>span{background:var(--course);box-shadow:inset 0 0 0 3px var(--course-pale)}.lesson-choices button.incorrect{border-color:#b94a35}.lesson-feedback{background:var(--paper-deep);color:var(--ink-soft);flex-direction:column;margin:16px 0 0;padding:12px 14px;font-size:11px;line-height:1.55;display:flex}.lesson-feedback strong{color:var(--ink);margin-bottom:3px}.lesson-feedback.success{background:#e4f3cf}.lesson-feedback.success strong{color:var(--green)}.lesson-feedback.hint{background:#fff0d8}.lesson-feedback.hint strong{color:#9a492e}.lesson-controls{gap:9px;margin-top:auto;padding-top:25px;display:flex}.lesson-controls.split{justify-content:space-between}.lesson-primary,.lesson-secondary{cursor:pointer;font:inherit;text-transform:uppercase;border:0;border-radius:999px;min-height:45px;padding:0 18px;font-size:10px;font-weight:850}.lesson-primary{background:var(--course);color:#fff}.lesson-primary:hover{background:var(--ink)}.lesson-primary:disabled,.lesson-secondary:disabled{cursor:not-allowed;opacity:.32}.lesson-secondary{border:1px solid var(--line);color:var(--ink);background:0 0}.lesson-complete-panel{margin:auto 0}.complete-badge{background:var(--course);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:68px;height:68px;margin-bottom:28px;font-size:30px;display:flex}.lesson-complete-panel .lesson-primary{margin-top:25px}.cell-scene,.atom-scene,.force-scene,.rover-scene{flex-direction:column;height:100%;min-height:650px;padding:28px;display:flex}.cell-title,.force-title,.rover-title{letter-spacing:.11em;text-transform:uppercase;justify-content:space-between;align-items:center;font-size:8px;font-weight:850;display:flex}.cell-title b,.force-title b,.rover-title b{background:var(--ink);color:#fff;padding:7px 9px}.plant-cell{background:#8bcf78;border:12px solid #39794e;border-radius:28% 19% 31% 18%;flex:1;width:92%;max-width:570px;min-height:340px;max-height:430px;margin:42px auto 30px;position:relative;overflow:hidden;box-shadow:inset 0 0 0 5px #d6efbb}.cell-membrane{border-radius:inherit;border:4px solid #f2f7d2;transition:box-shadow .2s;position:absolute;inset:8px}.cell-vacuole{color:#38626a;background:#d5f2f9c4;border:2px solid #8bc6cf;border-radius:45% 55% 43% 57%;justify-content:center;align-items:center;width:47%;height:62%;font-size:8px;display:flex;position:absolute;top:20%;left:27%}.cell-nucleus{color:#fff;background:#7254bd;border:9px solid #a88be5;border-radius:50%;justify-content:center;align-items:center;width:88px;height:88px;font-size:7px;transition:box-shadow .2s;display:flex;position:absolute;top:14%;left:9%}.cell-chloroplast{color:#fff;background:#176744;border:5px solid #5fa65f;border-radius:50%;justify-content:center;align-items:center;width:83px;height:45px;font-size:6px;transition:box-shadow .2s;display:flex;position:absolute;top:18%;right:8%;transform:rotate(-18deg)}.chloroplast-b{inset:auto auto 12% 8%;transform:rotate(23deg)}.cell-mitochondrion{color:var(--ink);background:#ed865e;border:5px solid #ffc0a3;border-radius:50%;justify-content:center;align-items:center;width:93px;height:49px;font-size:6px;transition:box-shadow .2s;display:flex;position:absolute;bottom:13%;right:10%;transform:rotate(18deg)}.show-cell-membrane .cell-membrane,.show-nucleus .cell-nucleus,.show-mitochondrion .cell-mitochondrion,.show-chloroplast .cell-chloroplast{box-shadow:0 0 0 6px #fff, 0 0 0 10px var(--ink)}.cell-scene>p,.atom-scene>p,.force-scene>p{color:var(--ink-soft);margin:auto 0 0;font-size:9px;line-height:1.5}.atom-readout{border-bottom:1px solid #14251f33;grid-template-columns:120px 1fr;align-items:center;gap:25px;padding-bottom:20px;display:grid}.atom-readout>span{align-items:center;gap:11px;font-family:Georgia,serif;font-size:21px;display:flex}.atom-readout>span b{background:var(--course);color:#fff;justify-content:center;align-items:center;width:58px;height:58px;font-size:27px;display:flex}.atom-readout dl{grid-template-columns:repeat(3,1fr);gap:6px;margin:0;display:grid}.atom-readout dl div{border-left:1px solid #14251f33;padding-left:13px}.atom-readout dt{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;font-size:7px;font-weight:850}.atom-readout dd{margin:4px 0 0;font-family:Georgia,serif;font-size:25px}.atom-model{width:390px;height:390px;margin:auto;position:relative}.electron-ring{border:2px solid #7657d88c;border-radius:50%;position:absolute;inset:45px}.ring-one{inset:92px}.atom-nucleus{background:var(--course);color:#fff;z-index:2;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:104px;height:104px;font-size:11px;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.atom-nucleus span+span{opacity:.7}.atom-model>i{--electron-distance:-150px;background:var(--ink);color:#fff;height:25px;transform:rotate(var(--electron-angle)) translateY(var(--electron-distance)) rotate(var(--electron-counter-angle));border-radius:50%;justify-content:center;align-items:center;width:25px;font-size:7px;font-style:normal;display:flex;position:absolute;top:calc(50% - 12px);left:calc(50% - 12px)}.atom-model>i.inner-electron{--electron-distance:-88px}.particle-controls{border-top:1px solid var(--line);margin-top:24px}.particle-counter{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:59px;display:flex}.particle-counter>span{align-items:center;gap:9px;font-size:11px;font-weight:720;display:flex}.particle-counter>span b{background:var(--course-pale);border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:8px;display:flex}.particle-counter>div{align-items:center;gap:5px;display:flex}.particle-counter button{border:1px solid var(--line);cursor:pointer;font:inherit;background:0 0;border-radius:50%;width:32px;height:32px}.particle-counter button:hover{border-color:var(--course)}.particle-counter button:disabled{opacity:.25}.particle-counter strong{text-align:center;min-width:32px}.lesson-rule{background:var(--course-pale);border-left:4px solid var(--course);margin:18px 0 0;padding:11px 12px;font-size:10px;font-weight:750}.force-scene{background-image:linear-gradient(#14251f12 1px,#0000 1px),linear-gradient(90deg,#14251f12 1px,#0000 1px);background-size:35px 35px}.force-track{flex:1;grid-template-columns:1fr 112px 1fr;align-items:center;margin:35px 0 5px;display:grid}.force-crate{background:var(--ink);color:#fff;letter-spacing:.11em;z-index:2;justify-content:center;align-items:center;width:112px;height:112px;font-size:9px;font-weight:850;display:flex;box-shadow:inset 0 0 0 8px #ffffff24}.force-arrow{align-items:center;max-width:100%;font-size:12px;font-weight:850;display:flex}.force-arrow span{background:var(--course);color:#fff;justify-content:center;align-items:center;height:42px;font-size:25px;display:flex}.force-arrow b{background:var(--course);color:#fff;justify-content:center;align-items:center;height:24px;font-size:10px;display:flex}.arrow-left{width:var(--left-force);justify-self:end}.arrow-left span{width:42px}.arrow-left b{flex:1}.arrow-right{width:var(--right-force)}.arrow-right span{width:42px}.arrow-right b{flex:1}.net-readout{background:var(--white);border:1px solid #14251f33;grid-template-columns:1fr 1fr 1fr;gap:13px;padding:19px;display:grid}.net-readout span,.net-readout b{letter-spacing:.07em;text-transform:uppercase;font-size:8px;font-weight:800;line-height:1.5}.net-readout strong{color:var(--course);font-family:Georgia,serif;font-size:18px;font-weight:400}.net-readout b{text-align:right}.direction-choices{grid-template-columns:repeat(3,1fr);gap:8px;margin-top:25px;display:grid}.direction-choices button{border:1px solid var(--line);cursor:pointer;font:inherit;background:0 0;min-height:52px;font-size:10px}.direction-choices button:hover,.direction-choices button.selected{background:var(--course-pale);border-color:var(--course)}.force-controls{margin-top:30px}.force-controls label{margin-bottom:25px;display:block}.force-controls label>span{letter-spacing:.1em;text-transform:uppercase;justify-content:space-between;margin-bottom:12px;font-size:9px;font-weight:850;display:flex}.force-controls input{accent-color:var(--course);width:100%}.periodic-section{border-top:1px solid var(--line);padding-top:105px;padding-bottom:118px;scroll-margin-top:24px}.periodic-heading{grid-template-columns:minmax(0,1fr) 360px;align-items:end;gap:70px;margin-bottom:48px;display:grid}.periodic-heading h2{letter-spacing:-.055em;max-width:760px;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(39px,5vw,62px);font-weight:400;line-height:1}.periodic-heading>p{color:var(--ink-soft);margin:0;font-size:13px;line-height:1.72}.periodic-layout{grid-template-columns:272px minmax(0,1fr);align-items:start;gap:28px;display:grid}.periodic-selected{--family:#59645f;--family-pale:#eef0ed;background:var(--white);border:1px solid var(--line);border-top:8px solid var(--family);min-height:455px;padding:22px}.periodic-selected>p:first-child{letter-spacing:.11em;text-transform:uppercase;margin:0 0 18px;font-size:8px;font-weight:850}.selected-element-mark{background:var(--family-pale);border:1px solid color-mix(in srgb, var(--family) 42%, transparent);flex-direction:column;justify-content:space-between;align-items:start;width:126px;height:126px;padding:13px;display:flex}.selected-element-mark span{font-size:10px;font-weight:850}.selected-element-mark strong{color:var(--family);font-family:Georgia,serif;font-size:61px;font-weight:400;line-height:.8}.periodic-selected h3{letter-spacing:-.045em;margin:22px 0 17px;font-family:Georgia,serif;font-size:34px;font-weight:400}.periodic-selected dl{border-top:1px solid var(--line);margin:0}.periodic-selected dl div{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;gap:12px;padding:9px 0;display:flex}.periodic-selected dt{color:var(--ink-soft);letter-spacing:.06em;text-transform:uppercase;font-size:8px;font-weight:800}.periodic-selected dd{text-align:right;margin:0;font-size:10px;font-weight:780}.periodic-rule{color:var(--ink-soft);margin:18px 0 0;font-size:10px;line-height:1.6}.periodic-rule strong{color:var(--ink);margin-bottom:4px;font-size:11px;display:block}.periodic-explorer{min-width:0}.periodic-swipe{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;margin:0 0 10px;font-size:8px;font-weight:800}.periodic-scroll{border:1px solid var(--line);scrollbar-color:var(--course) var(--paper-deep);padding:13px;overflow-x:auto}.periodic-scroll:focus-visible{outline:3px solid var(--course);outline-offset:3px}.periodic-table{grid-template-rows:20px repeat(7,64px) 13px repeat(2,64px);grid-template-columns:repeat(18,minmax(48px,1fr));gap:4px;min-width:1040px;display:grid}.periodic-group{color:var(--ink-soft);place-self:center;font-size:7px;font-weight:850}.periodic-series-label{color:var(--ink-soft);letter-spacing:.05em;text-transform:uppercase;justify-content:flex-end;align-items:center;padding-right:7px;font-size:7px;font-weight:850;display:flex}.series-gap{background:var(--paper-deep);border:1px dashed var(--line);color:var(--ink-soft);justify-content:center;align-items:center;font-size:7px;font-weight:850;display:flex}.element-tile{--family:#59645f;--family-pale:#eef0ed;background:var(--family-pale);border:1px solid color-mix(in srgb, var(--family) 45%, transparent);color:var(--ink);cursor:pointer;font:inherit;text-align:left;flex-direction:column;min-width:0;padding:5px;display:flex}.element-tile:hover{box-shadow:inset 0 0 0 2px var(--family);transform:translateY(-1px)}.element-tile:focus-visible{outline:3px solid var(--ink);outline-offset:1px;z-index:2;position:relative}.element-tile[aria-pressed=true]{background:var(--family);color:#fff;outline:3px solid var(--ink);outline-offset:1px;z-index:1;position:relative}.element-tile>span{font-size:7px;font-weight:850}.element-tile>strong{margin-top:4px;font-family:Georgia,serif;font-size:21px;font-weight:400;line-height:1}.element-tile>small{text-overflow:ellipsis;white-space:nowrap;width:100%;margin-top:auto;font-size:6px;overflow:hidden}.family-nonmetal{--family:#23845a;--family-pale:#d9f0c0}.family-alkali{--family:#b45635;--family-pale:#ffdac8}.family-alkaline-earth{--family:#b88613;--family-pale:#f8e7ac}.family-transition-metal{--family:#4d669d;--family-pale:#d8eaff}.family-post-transition{--family:#58726a;--family-pale:#dfe8e3}.family-metalloid{--family:#487b73;--family-pale:#d4ebe5}.family-halogen{--family:#287783;--family-pale:#d1eef1}.family-noble-gas{--family:#7657d8;--family-pale:#e2dcff}.family-lanthanide{--family:#9e4d86;--family-pale:#f1d9e9}.family-actinide{--family:#8b5361;--family-pale:#efdde1}.family-legend{grid-template-columns:repeat(5,1fr);gap:8px 12px;margin-top:20px;display:grid}.family-legend span{--family:#59645f;color:var(--ink-soft);align-items:center;gap:6px;font-size:7px;font-weight:780;line-height:1.25;display:flex}.family-legend i{background:var(--family);flex:0 0 10px;height:10px;display:inline-block}.family-note{color:var(--ink-soft);margin:15px 0 0;font-size:8px;line-height:1.55}.rover-scene{background:#d8eaff}.rover-grid{flex:1;grid-template-rows:repeat(4,1fr);grid-template-columns:repeat(4,1fr);gap:5px;width:100%;max-width:500px;max-height:500px;margin:30px auto 22px;display:grid;position:relative}.rover-grid>span{color:var(--ink-soft);letter-spacing:.08em;background:#ffffff94;border:1px solid #14251f24;justify-content:center;align-items:center;font-size:7px;font-weight:850;display:flex}.rover-grid>span.rock{color:#fff;clip-path:polygon(21% 15%,79% 8%,93% 64%,69% 91%,12% 80%,7% 39%);background:#6b7881}.rover-grid>span.sample{background:var(--lime);border:3px dashed var(--green);color:var(--green)}.rover{background:var(--course);color:#fff;z-index:3;border:5px solid #fff;border-radius:14px;flex-direction:column;justify-content:center;place-self:center;align-items:center;width:62px;height:62px;transition:grid-column .35s,grid-row .35s;display:flex;position:relative;box-shadow:0 8px 16px #14251f40}.rover i{font-size:15px;font-style:normal;line-height:1;transition:transform .25s}.rover b{margin-top:5px;font-size:9px}.rover.facing-e i{transform:rotate(90deg)}.rover.facing-s i{transform:rotate(180deg)}.rover.facing-w i{transform:rotate(270deg)}.rover.moving{box-shadow:0 0 0 7px #2462a733,0 8px 16px #14251f40}.map-legend{letter-spacing:.08em;text-transform:uppercase;flex-wrap:wrap;gap:20px;font-size:8px;font-weight:800;display:flex}.map-legend span{align-items:center;gap:7px;display:flex}.map-legend i{background:var(--course);width:12px;height:12px;display:inline-block}.map-legend .legend-rock{background:#6b7881}.map-legend .legend-sample{background:var(--lime);border:1px dashed var(--green)}.rover-challenges{grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:22px;display:grid}.rover-challenges button{border:1px solid var(--line);cursor:pointer;font:inherit;text-align:left;background:0 0;min-height:52px;padding:8px;font-size:8px;font-weight:800;line-height:1.25}.rover-challenges button span{color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px;font-size:7px;display:block}.rover-challenges button:hover{border-color:var(--course)}.rover-challenges button[aria-pressed=true]{background:var(--course);border-color:var(--course);color:#fff}.rover-challenges button[aria-pressed=true] span{color:#ffffffb8}.rover-challenges button:focus-visible{outline:3px solid var(--ink);outline-offset:2px}.rover-challenges button:disabled{cursor:not-allowed;opacity:.5}.command-palette{grid-template-columns:repeat(3,1fr);gap:7px;margin-top:23px;display:grid}.command-palette button{background:var(--course-pale);cursor:pointer;font:inherit;text-transform:uppercase;border:1px solid #0000;flex-direction:column;gap:7px;min-height:67px;padding:10px;font-size:8px;font-weight:800;display:flex}.command-palette button:hover{border-color:var(--course)}.command-palette button:disabled{cursor:not-allowed;opacity:.35}.command-palette b{font-size:18px}.program-queue{border:1px solid var(--line);max-height:175px;margin-top:16px;overflow:auto}.program-queue>div{background:var(--paper-deep);letter-spacing:.09em;text-transform:uppercase;justify-content:space-between;align-items:center;min-height:35px;padding:0 11px;font-size:8px;font-weight:850;display:flex}.program-queue ol{grid-template-columns:repeat(2,1fr);gap:4px;margin:0;padding:8px;list-style:none;display:grid}.program-queue li{background:#f2f4ef;align-items:center;gap:8px;min-height:30px;padding:5px 8px;font-size:9px;display:flex}.program-queue li span{border:1px solid var(--line);border-radius:50%;justify-content:center;align-items:center;width:19px;height:19px;font-size:7px;display:flex}.program-queue li.executed{opacity:.65;background:#dcebc8}.program-queue li.next{box-shadow:inset 0 0 0 2px var(--course)}.program-queue>p{color:var(--ink-soft);margin:0;padding:16px;font-size:10px}.program-controls{grid-template-columns:repeat(4,1fr);gap:6px;margin-top:auto;padding-top:18px;display:grid}.program-controls button{border:1px solid var(--line);cursor:pointer;font:inherit;text-transform:uppercase;background:0 0;min-height:42px;font-size:8px;font-weight:850}.program-controls button.run{background:var(--course);border-color:var(--course);color:#fff}.program-controls button:disabled{cursor:not-allowed;opacity:.3}.course-switcher{border-top:1px solid var(--line);padding-top:35px;padding-bottom:105px}.course-switcher>p{letter-spacing:.1em;text-transform:uppercase;font-size:9px;font-weight:850}.course-switcher>div{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px;display:grid}.course-switcher a{background:var(--white);grid-template-columns:42px 1fr auto;align-items:center;gap:13px;min-height:70px;padding:13px;display:grid}.course-switcher a:hover{box-shadow:0 12px 28px #14251f14}.course-switcher a>span{background:var(--course-pale);border-radius:50%;justify-content:center;align-items:center;width:42px;height:42px;font-family:Georgia,serif;font-size:9px;display:flex}.course-switcher a.biology>span{background:#d9f0c0}.course-switcher a.chemistry>span{background:#e2dcff}.course-switcher a.physics>span{background:#ffdac8}.course-switcher a.computer-science>span{background:#d8eaff}.course-switcher strong{font-size:11px}.course-switcher i{font-style:normal}.inner-hero{padding-top:90px;padding-bottom:110px}.inner-hero.compact{padding-bottom:75px}.inner-hero h1,.policy-page>h1{letter-spacing:-.07em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(56px,8vw,104px);font-weight:400;line-height:.9}.inner-hero h1 em{color:var(--green);font-weight:400}.inner-hero>p:last-child{color:var(--ink-soft);max-width:650px;margin:32px 0 0;font-size:17px;line-height:1.7}.story-section{background:var(--ink);color:#fff;padding:108px 0}.story-grid{grid-template-columns:120px .9fr 1fr;gap:48px;display:grid}.story-copy{border-left:1px solid #fff3;padding-left:48px}.story-copy p{color:#adbbb5;margin:0 0 22px;font-size:15px;line-height:1.8}.stem-story{grid-template-columns:.82fr 1.18fr;align-items:center;gap:105px;padding-top:120px;padding-bottom:120px;display:grid}.stem-story-card{aspect-ratio:4/5;background:var(--lime);flex-direction:column;justify-content:space-between;padding:30px;display:flex;transform:rotate(-2deg);box-shadow:20px 22px #14251f1f}.stem-story-card>p{letter-spacing:.1em;border-top:1px solid #14251f4d;padding-top:16px;font-size:8px;font-weight:800;line-height:1.6}.stem-story-icon{object-fit:contain;border:6px solid #ffffff73;border-radius:42px;align-self:center;width:190px;height:190px;margin-top:80px;box-shadow:0 20px 42px #14251f2e}.stem-story>div:last-child>p:not(.eyebrow){color:var(--ink-soft);font-size:14px;line-height:1.78}.stem-story .button{margin-top:18px}.principles-section{background:var(--paper-deep);padding:96px 0 110px}.principle-grid{border-bottom:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.principle-grid article{min-height:250px;padding:27px}.principle-grid article+article{border-left:1px solid var(--line)}.principle-grid h3{margin-top:64px}.support-list{border-top:1px solid var(--line)}.support-list>a{border-bottom:1px solid var(--line);grid-template-columns:68px 1fr auto;align-items:center;gap:22px;min-height:112px;padding:18px 12px;display:grid}.support-list>a:hover{background:var(--white);padding-left:22px}.support-product-icon{background:var(--ink);object-fit:contain;border-radius:14px;width:58px;height:58px;box-shadow:0 5px 14px #14251f26}.support-list strong{letter-spacing:-.03em;font-family:Georgia,serif;font-size:25px;font-weight:400;display:block}.support-list small{color:var(--ink-soft);margin-top:6px;font-size:11px;display:block}.support-list i{font-style:normal}.support-note{grid-template-columns:.8fr 1fr;gap:80px;padding-top:100px;padding-bottom:110px;display:grid}.support-note>p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.75}.policy-page{max-width:900px;padding-top:90px;padding-bottom:120px}.policy-page>h1{font-size:clamp(48px,7vw,82px);line-height:.96}.policy-updated{color:var(--ink-soft);text-transform:uppercase;margin:25px 0 70px;font-size:11px}.policy-page section{border-top:1px solid var(--line);grid-template-columns:230px 1fr;gap:55px;padding:34px 0;display:grid}.policy-page section h2{letter-spacing:-.025em;margin:0;font-family:Georgia,serif;font-size:22px;font-weight:400}.policy-page section p{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.75}@media (max-width:980px){.hero{grid-template-columns:1fr 360px;gap:40px}.product-grid{grid-template-columns:repeat(2,1fr)}.product-leaflet{min-height:390px}.studio-project-card{grid-template-columns:1fr 1fr}.studio-project-copy{padding-inline:32px}.studio-project-copy .eyebrow{margin-top:46px}.about-section{grid-template-columns:80px 1fr}.about-copy{border-left:0;grid-column:2;padding-left:0}.product-hero-grid{grid-template-columns:1fr 310px;gap:45px}.project-hero-grid{grid-template-columns:1fr 350px;gap:45px}.product-poster-icon{border-radius:26px;width:120px;height:120px}.orbit-a{width:190px;height:190px}.orbit-b{width:255px;height:255px}.product-overview,.availability-section{gap:58px}.feature-grid{grid-template-columns:repeat(2,1fr)}.feature-grid article:nth-child(3){border-left:0;border-top:1px solid var(--line)}.feature-grid article:nth-child(4){border-top:1px solid var(--line)}.stem-hub-intro{grid-template-columns:1fr 330px;gap:45px}.course-hero-grid{grid-template-columns:1fr 310px;gap:55px}.course-path-heading{grid-template-columns:1fr 330px;gap:55px}.lesson-section-heading{grid-template-columns:150px 1fr}.lesson-section-heading>p:last-child{grid-column:2}.lesson-workspace{grid-template-columns:1fr}.lesson-canvas{min-height:590px}.periodic-layout{grid-template-columns:1fr}.periodic-selected{grid-template-columns:150px 1fr;gap:0 24px;min-height:0;display:grid}.periodic-selected>p:first-child,.periodic-selected .selected-element-mark{grid-column:1}.periodic-selected h3,.periodic-selected dl,.periodic-selected .periodic-rule{grid-column:2}.periodic-selected h3{grid-row:1/span 2;margin-top:26px}.periodic-selected dl{grid-row:2/span 2;margin-top:33px}.periodic-selected .periodic-rule{margin-top:18px}.story-grid{grid-template-columns:80px 1fr}.story-copy{border-left:0;grid-column:2;padding-left:0}.stem-story{gap:55px}}@media (max-width:720px){.shell{width:min(100% - 32px,1180px)}.site-header{height:72px;padding:0 16px}nav{gap:18px}nav a:last-child{display:none}.hero{flex-direction:column;gap:52px;min-height:0;padding:54px 0 70px;display:flex}.hero h1{font-size:clamp(52px,16vw,76px)}.hero-brand-art{max-width:430px}.section-heading{display:block}.section-heading>p{margin-top:24px}.product-grid{grid-template-columns:1fr}.product-leaflet{min-height:390px}.studio-work-section{padding:80px 0 88px}.studio-work-heading{display:block}.studio-work-heading>p{margin-top:24px}.studio-project-card{flex-direction:column;display:flex}.studio-project-copy{min-height:540px;padding:28px 24px 30px}.studio-project-art{order:-1;min-height:240px}.studio-project-art img{width:calc(100% - 56px);height:calc(100% - 56px);inset:28px}.studio-project-copy .eyebrow{margin-top:42px}.about-section{padding:82px 0;display:block}.about-section>div{margin-top:48px}.about-copy{padding:0}.footer-inner{grid-template-columns:1fr;padding:28px 0}.footer-inner p{text-align:left;margin:0}.footer-links{justify-content:flex-start}.breadcrumb{white-space:nowrap;padding:24px 0 40px;overflow:hidden}.product-hero{padding-bottom:60px}.product-hero-grid{flex-direction:column;gap:58px;display:flex}.project-hero{padding-bottom:64px}.project-hero-grid{flex-direction:column;gap:52px;display:flex}.project-hero-copy h1{font-size:clamp(48px,14vw,72px)}.project-hero-art{max-width:520px;transform:rotate(.7deg)}.product-hero-copy h1{font-size:clamp(48px,14vw,72px)}.product-poster{max-width:360px}.fact-strip .shell{grid-template-columns:1fr}.fact-strip .shell>div,.fact-strip .shell>div:first-child{border-left:1px solid var(--line);min-height:88px;padding:25px 20px}.fact-strip .shell>div+div{border-top:1px solid var(--line)}.product-overview,.availability-section{padding-top:78px;padding-bottom:78px;display:block}.overview-copy{border-left:0;margin-top:40px;padding-left:0}.feature-section{padding:78px 0}.feature-heading{display:block}.feature-heading h2{margin-top:26px}.feature-grid{grid-template-columns:1fr}.feature-grid article,.feature-grid article+article,.feature-grid article:nth-child(3){border-left:0;border-top:1px solid var(--line);min-height:230px}.feature-grid article:first-child{border-top:0}.availability-section .store-list{margin-top:40px}.more-software>div{grid-template-columns:1fr}.stem-hub{padding-top:82px}.stem-hub-intro{display:block}.stem-hub-intro>p{margin-top:25px}.track-grid{grid-template-columns:1fr}.track-card{min-height:610px}.learning-promise{grid-template-columns:1fr 1fr}.learning-promise span:nth-child(3){border-top:1px solid #ffffff2e;border-left:0}.learning-promise span:nth-child(4){border-top:1px solid #ffffff2e}.course-hero{padding-bottom:68px}.course-hero-grid{flex-direction:column;display:flex}.course-emblem{max-width:350px}.course-path{padding-top:82px;padding-bottom:82px}.course-path-heading{display:block}.course-path-heading>p{margin-top:25px}.course-path-grid{grid-template-columns:1fr}.course-path-grid article{min-height:310px}.course-path-grid article+article{border-left:1px solid var(--line);border-top:0}.lesson-section{padding-bottom:85px}.lesson-section-heading{display:block}.lesson-section-heading h2{margin-top:25px}.lesson-section-heading>p:last-child{margin-top:22px}.periodic-section{padding-top:82px;padding-bottom:85px}.periodic-heading{display:block}.periodic-heading>p{margin-top:24px}.periodic-selected{display:block}.periodic-selected h3{margin-top:22px}.periodic-selected dl{margin-top:0}.family-legend{grid-template-columns:repeat(2,1fr)}.interactive-lesson{padding:10px}.lesson-topbar{grid-template-columns:1fr 1fr;padding-inline:4px}.lesson-topbar strong{display:none}.lesson-workspace{grid-template-columns:1fr}.lesson-canvas{min-height:500px}.lesson-instruction{min-height:570px;padding:32px 23px}.cell-scene,.atom-scene,.force-scene,.rover-scene{min-height:500px;padding:20px}.plant-cell{width:100%;min-height:300px;margin-top:30px}.cell-nucleus{width:70px;height:70px}.atom-readout{grid-template-columns:1fr}.atom-readout dl{width:100%}.atom-model{width:300px;height:330px}.atom-model>i{--electron-distance:-115px}.atom-model>i.inner-electron{--electron-distance:-72px}.force-track{grid-template-columns:1fr 88px 1fr}.force-crate{width:88px;height:88px}.force-arrow span{width:36px;height:36px}.net-readout{grid-template-columns:1fr}.net-readout b{text-align:left}.direction-choices{grid-template-columns:1fr}.rover{width:52px;height:52px}.command-palette button{min-height:63px}.program-controls{grid-template-columns:1fr 1fr}.course-switcher>div{grid-template-columns:1fr}.inner-hero{padding-top:65px;padding-bottom:78px}.story-grid{display:block}.story-grid>div{margin-top:40px}.story-copy{padding:0}.stem-story{flex-direction:column;padding-top:85px;padding-bottom:85px;display:flex}.stem-story-card{width:100%;max-width:360px}.principle-grid{grid-template-columns:1fr}.principle-grid article+article{border-left:0;border-top:1px solid var(--line)}.support-list>a{grid-template-columns:54px 1fr auto;gap:14px;padding-inline:0}.support-list strong{font-size:20px}.support-list small{line-height:1.5}.support-product-icon{border-radius:11px;width:46px;height:46px}.support-note{padding:78px 0;display:block}.support-note>p{margin-top:25px}.policy-page{padding-top:65px;padding-bottom:85px}.policy-page section{display:block}.policy-page section p{margin-top:14px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.product-leaflet,.store-button,.lesson-meter span,.rover,.rover i{transition:none}}