:root{--navy:#071b3b;--ink:#14283e;--muted:#506276;--cyan:#00d9ec;--blue:#0754a4;--line:#d8e2ec;--paper:#f3f7fb}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;font-family:Inter,'Segoe UI',Arial,sans-serif;color:var(--ink);line-height:1.7;background:#fff}img{max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,summary:focus-visible{outline:3px solid #008fae;outline-offset:5px}p{margin:0 0 18px}h1,h2,h3{line-height:1.13;letter-spacing:-.035em;margin:0 0 22px}h1{font-size:clamp(40px,4.4vw,65px);font-weight:720}h2{font-size:clamp(32px,3.4vw,47px);font-weight:650}h3{font-size:25px;font-weight:650}ul,ol{padding-left:22px}li{margin-bottom:10px}.wrap{width:min(1240px,calc(100% - 80px));margin:auto}.skip{position:absolute;top:-100px;padding:12px;background:#fff;z-index:20}.skip:focus{top:0}header{background:#fff;border-bottom:1px solid var(--line)}.nav{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:100px}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);font-size:20px;font-weight:700;line-height:1.25}.brand:hover{text-decoration:none}.brand img{border-radius:10px;flex:none}.brand small{display:block;font-size:8px;letter-spacing:.14em;margin-top:7px;color:var(--muted)}nav{display:flex;gap:23px;flex-wrap:wrap;font-size:13px;font-weight:600}nav a{color:var(--ink)}.hero{background:var(--navy);color:#fff;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:48px;align-items:center;padding-top:76px;padding-bottom:70px}.eyebrow{font-size:11px;letter-spacing:.14em;font-weight:750;color:var(--blue);margin-bottom:18px}.hero .eyebrow,.navy .eyebrow{color:var(--cyan)}.product-name{font-size:18px;color:#d0ddf0;margin-bottom:22px}.hero h1 em{font-style:normal;color:var(--cyan)}.lead{font-size:17px;line-height:1.8;color:#cfdef1;max-width:640px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:5px;padding:14px 22px;font-size:13px;line-height:1.5;font-weight:750;text-align:center}.button:hover{text-decoration:none;filter:brightness(.94)}.primary{background:var(--blue);color:#fff}.hero .primary,.navy .primary{background:var(--cyan);color:#052442}.secondary{border:1px solid #67819f;color:#e7f4ff}.hero-note{font-size:11px;color:#a7bdd8;line-height:1.8;margin:24px 0 0;max-width:560px}.hero-visual{margin:0;border:1px solid #1c416c;border-radius:16px;overflow:hidden;box-shadow:0 26px 80px #0004}.hero-visual img{display:block;width:100%;aspect-ratio:1.12;object-fit:cover}.hero-visual figcaption{padding:17px 20px;color:#b9d0e9;font-size:11px;background:#0a2347}.proof-strip{border-bottom:1px solid var(--line);background:#f8fbff}.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);padding-top:27px;padding-bottom:27px;gap:26px}.proof-grid strong{font-size:16px;display:block}.proof-grid span{display:block;font-size:11px;color:var(--muted);margin-top:5px}.section{padding-top:88px;padding-bottom:88px}.soft{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-head{display:flex;gap:65px;justify-content:space-between;align-items:flex-end;margin-bottom:38px}.section-head>div{flex:1.2}.section-head>p{flex:1;font-size:15px;color:var(--muted);margin-bottom:23px;max-width:450px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.feature-tile{border:1px solid var(--line);border-radius:8px;padding:27px;background:#fff}.feature-tile>span,.resource>span{font-size:10px;letter-spacing:.1em;font-weight:750;color:var(--blue)}.feature-tile h3{font-size:22px;margin-top:18px}.feature-tile p{font-size:13px;color:var(--muted);margin:0}.example-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.example-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;display:flex;flex-direction:column}.card-body{padding:26px;flex:1}.card-body p:not(.eyebrow){font-size:13px;color:var(--muted)}.card-body h3{font-size:25px}.example-card>a{display:block;border-top:1px solid var(--line)}.example-card img{display:block;width:100%}pre{font:12px/1.85 Consolas,'Courier New',monospace;background:var(--navy);color:#d9ecff;padding:20px;border-radius:6px;white-space:pre-wrap;overflow-wrap:anywhere;tab-size:2}code{font-family:Consolas,monospace;overflow-wrap:anywhere}.small{font-size:12px;color:var(--muted);margin-top:20px;line-height:1.8}.model-row{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center;padding:44px 0;border-top:1px solid var(--line)}.model-row:nth-of-type(even) .model-art{order:2}.model-art{min-width:0}.model-art img{display:block;width:100%;border-radius:12px;aspect-ratio:1.5;object-fit:cover;background:var(--navy)}.model-art p{font-size:10px;color:var(--muted);margin:9px 0 0}.model-copy{min-width:0}.model-copy h3{font-size:35px}.model-copy>p:not(.eyebrow),.model-copy li{font-size:14px;color:var(--muted)}.model-details{border-top:1px solid var(--line);padding-top:15px}.model-details summary{font-size:13px;font-weight:700;color:var(--blue);cursor:pointer}.text-link{font-size:13px;font-weight:700}.note{margin-top:22px;background:#edf5fc;border-left:3px solid var(--blue);padding:23px 26px;font-size:13px;color:#3c526a}.desktop-bottom-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;margin-top:60px}.steps{font-size:14px;color:var(--muted);margin:22px 0 30px}.license-panel{background:#fff;border:1px solid var(--line);padding:32px;border-radius:10px}.license-panel p:not(.eyebrow){font-size:14px;color:var(--muted)}.resource-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.resource{display:block;border:1px solid var(--line);border-radius:9px;padding:30px;color:var(--ink);transition:background .15s}.resource:hover{background:var(--paper);text-decoration:none}.resource h3{margin-top:18px}.resource p{font-size:14px;color:var(--muted);margin:0}.audience{margin-top:40px;border-top:1px solid var(--line);padding-top:32px}.audience p{font-size:14px;color:var(--muted)}.navy{background:var(--navy);color:#fff}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:65px}.navy p:not(.eyebrow){font-size:15px;color:#c6d7ed}.faq{max-width:1000px;margin-top:35px}.faq details{border-bottom:1px solid var(--line);padding:21px 0}.faq summary{font-size:16px;font-weight:650;cursor:pointer}.faq p{font-size:14px;color:var(--muted);margin:16px 0 0;max-width:900px}.evaluation{display:flex;gap:65px;align-items:center;justify-content:space-between}.evaluation>div{max-width:740px}.evaluation .button{flex:none}.evaluation p:not(.eyebrow){font-size:15px;color:var(--muted)}footer{padding:36px 0;background:#fff}.footer-inner{display:flex;justify-content:space-between;gap:35px;align-items:center;font-size:12px}.footer-inner p{margin:0}.footer-inner span{color:var(--muted)}.footer-inner>div{display:flex;gap:20px;flex-wrap:wrap}
@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.nav{padding:20px 0;flex-wrap:wrap;min-height:90px}nav{gap:18px}.hero-grid{gap:28px}.hero h1{font-size:46px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.model-row{gap:30px}.section-head{gap:35px}.proof-grid{gap:16px}.proof-grid strong{font-size:14px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.nav{gap:20px}nav{gap:12px 18px;font-size:11px}.brand{font-size:18px}.hero-grid{grid-template-columns:1fr;padding-top:46px;padding-bottom:40px;gap:32px}.hero h1{font-size:clamp(34px,7.5vw,52px)}.lead{font-size:15px}.hero-visual img{aspect-ratio:1.5}.hero-note{font-size:11px}.proof-grid{grid-template-columns:1fr 1fr;gap:22px;padding:24px 0}.section{padding:55px 0}.section-head{display:block;margin-bottom:28px}.section-head>p{max-width:none;font-size:14px}.section-head h2{font-size:33px}.feature-grid,.example-grid,.model-row,.desktop-bottom-grid,.resource-grid,.two-col{grid-template-columns:1fr}.feature-grid{gap:14px}.feature-tile{padding:23px}.model-row{gap:24px;padding:33px 0}.model-row:nth-of-type(even) .model-art{order:0}.model-copy h3{font-size:29px}.desktop-bottom-grid{gap:32px;margin-top:36px}.license-panel{padding:25px}.evaluation{display:block}.evaluation .button{margin-top:14px}.footer-inner{align-items:flex-start;flex-direction:column;gap:20px}.footer-inner>div{gap:12px 18px}pre{font-size:11px;padding:16px}.card-body{padding:22px}.two-col{gap:15px}.actions .button{padding:13px 17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.resource{transition:none}}

/* Classroom and future Microsoft Store link. */
.store-status{font-size:12px;color:#bdd4ee;margin:20px 0 0}.store-link{color:var(--cyan);font-weight:700}
.classroom-feature{margin:0 0 34px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--paper)}
.classroom-feature picture{display:block}.classroom-feature img{display:block;width:100%;height:auto;aspect-ratio:1.5;object-fit:contain}
.classroom-feature figcaption{padding:30px 34px;display:flex;gap:35px;align-items:flex-end;justify-content:space-between}.classroom-feature figcaption>div{max-width:850px}.classroom-feature figcaption p:not(.eyebrow){font-size:14px;color:var(--muted);margin:0}.classroom-feature .eyebrow{margin-bottom:12px}.classroom-feature h3{font-size:29px;margin-bottom:14px}.classroom-feature small{font-size:10px;color:var(--muted);max-width:150px;flex-shrink:0}
@media(max-width:760px){.classroom-feature img{aspect-ratio:1.5}.classroom-feature figcaption{display:block;padding:23px}.classroom-feature h3{font-size:25px}.classroom-feature small{display:block;margin-top:18px;max-width:none}}
/* Preserve the mathematical labels across the full hero canvas. */
.hero-visual img{aspect-ratio:1.5;object-fit:contain}