@import url('/fonts.css');
:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#102449;background:#f3f6fb;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,a,input{-webkit-tap-highlight-color:transparent}button,.button{font:inherit;font-weight:650;border:0;border-radius:12px;padding:15px 20px;cursor:pointer;transition:background .15s,transform .15s;min-height:48px;text-decoration:none;text-align:center;display:inline-block}button:hover,.button:hover{transform:translateY(-1px)}button:disabled{opacity:.5;cursor:default;transform:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #ff9a42;outline-offset:3px}a{color:inherit}main{max-width:1600px;margin:auto;padding:0 50px}header{height:110px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #dbe3ef}.brand{display:flex;align-items:center;gap:13px;text-decoration:none}.brand-icon{height:46px;width:46px;background:#1767d2;color:white;border-radius:14px;display:grid;place-items:center;font-size:30px;font-weight:800;position:relative}.brand-icon span{color:#ff9a42;position:absolute;right:4px;top:-10px}.brand b{font-size:24px}.brand b span{display:block;font-size:9px;letter-spacing:1.8px;margin-top:3px}.demo-badge{font-size:12px;border:1px solid #cbd9ec;border-radius:20px;padding:9px 14px;color:#50698b}.hero{padding:65px 0 45px}.eyebrow{color:#1767d2;font-size:11px;font-weight:800;letter-spacing:1.8px}h1{font-size:clamp(36px,4.5vw,68px);letter-spacing:-2.5px;line-height:1.1;margin:23px 0}h1 em{font-style:normal;color:#1767d2}.hero p{max-width:730px;font-size:18px;line-height:1.7;color:#52657e}.how{display:flex;gap:30px;margin-top:30px;font-size:13px;font-weight:600}.how span{display:flex;align-items:center;gap:10px}.how b{border-radius:50%;width:26px;height:26px;display:grid;place-items:center;background:#e0eafb;color:#1767d2}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.activity{padding:28px;border-radius:22px;background:white;border:1px solid #e2e8f0;display:flex;flex-direction:column;min-height:345px;box-shadow:0 8px 30px #10244905}.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.card-top span{font-size:10px;font-weight:800;letter-spacing:1.5px;color:#52657e}.card-top i{font-style:normal;font-size:40px;line-height:1;background:#e9f0fc;width:70px;height:70px;border-radius:19px;display:grid;place-items:center;color:#1767d2}.activity.route .card-top i{background:#fff1e3;color:#b86a25}.activity.vision .card-top i{background:#e4f4ee;color:#27815a}h2{font-size:25px;line-height:1.2;letter-spacing:-.6px;margin:25px 0 12px}.activity p{color:#52657e;font-size:15px;line-height:1.65;margin:0 0 25px}.activity button{background:#102449;color:white;text-align:left;margin-top:auto;width:100%;display:flex;justify-content:space-between}.footnote{max-width:970px;color:#677b95;font-size:12px;line-height:1.8;margin:28px 0 40px}footer{border-top:1px solid #dbe3ef;padding:25px 0;margin-top:35px;display:flex;justify-content:space-between;gap:15px;color:#647792;font-size:11px}.room-top{display:flex;justify-content:space-between;align-items:center;padding:35px 0 25px;gap:15px}.room-top h1{font-size:clamp(26px,3vw,44px);letter-spacing:-1.3px;margin:12px 0 0}.connection{display:flex;align-items:center;gap:8px;font-size:12px;color:#8a6c3a;white-space:nowrap}.connection i{width:8px;height:8px;background:#d2a44a;border-radius:50%}.connection.online{color:#27815a}.connection.online i{background:#27815a}.room-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:25px;align-items:start}.experiment{border-radius:22px;background:white;border:1px solid #e2e8f0;padding:26px 35px 32px;min-height:580px}.experiment-top{display:flex;justify-content:space-between;font-size:10px;font-weight:750;letter-spacing:1.4px;color:#6a7b92;margin-bottom:20px}.pairing,.controls{border-radius:22px;padding:28px;background:#e7eef8}.pairing h2{font-size:28px;margin-top:16px}.qr{width:100%;height:auto;max-width:280px;border-radius:16px;display:block;margin:22px auto}.pairing p{font-size:14px;line-height:1.65;color:#52657e}.pairing .button,.pairing button{width:100%;font-size:12px;margin:5px 0}.pairing small{display:block;color:#52657e;line-height:1.6;font-size:11px;margin-top:18px}hr{border:0;border-top:1px solid #cbd8ea;margin:20px 0}.primary,.selected{background:#1767d2;color:white}.secondary{background:white;color:#102449;border:1px solid #cbd8ea}.controls h2{font-size:18px;letter-spacing:-.3px}.controls>button{width:100%;margin:7px 0}.row{display:flex;gap:8px;margin:12px 0}.row>*{flex:1;font-size:13px;padding:12px 8px}.sensor-scene{height:290px;position:relative;display:flex;align-items:center;flex-direction:column;padding-top:15px}.sensor-head{width:150px;height:65px;border-radius:16px;background:#102449;position:relative;display:flex;gap:15px;justify-content:center;align-items:center;z-index:2}.sensor-head i{width:27px;height:27px;border:6px solid #75b2f5;background:#142b4c;border-radius:50%}.sensor-head span{position:absolute;top:-25px;font-size:11px;color:#6a7b92;white-space:nowrap}.beams{height:125px;width:180px;background:linear-gradient(180deg,#86baff50,#86baff08);clip-path:polygon(28% 0,72% 0,100% 100%,0 100%);margin-top:-4px}.sample{width:270px;height:60px;border-radius:12px;display:grid;place-items:center;border:2px solid #c7d4e7;font-size:13px;box-shadow:0 15px 25px #10244912;transform:perspective(400px) rotateX(20deg)}.sample.white{background:#fafafa}.sample.black{background:#152335;color:white;border-color:#152335}.meter-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;font-size:13px;color:#52657e}.meter-label strong{font-size:31px;color:#102449}.meter-label small{font-size:13px;font-weight:400}.meter{height:20px;background:#e6edf7;border-radius:20px;position:relative;margin:0 0 50px}.meter>div{height:20px;border-radius:20px;background:linear-gradient(90deg,#85b9f3,#1767d2);transition:width .3s}.meter>b{height:32px;position:absolute;top:-6px;width:3px;background:#ff9a42}.meter>b span{position:absolute;top:38px;font-size:11px;font-weight:650;white-space:nowrap;transform:translateX(-50%);color:#a65e1f}.samples,.scores{display:flex;gap:15px;margin-top:15px}.samples>span,.scores>span{flex:1;background:#f1f5fa;border-radius:12px;padding:16px;font-size:12px;display:flex;align-items:center;justify-content:space-between;gap:8px}.samples b,.scores b{font-size:23px}.feedback{border-radius:12px;padding:17px;background:#e9f1fc;font-size:14px;line-height:1.6;margin-top:20px}.success{background:#e7f5ed;color:#216745}.warning{background:#fff1e2;color:#945317}.hint{color:#627691;font-size:13px;line-height:1.65}.board{width:100%;display:block;max-height:470px;margin:auto}.sequence{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.sequence>span{width:38px;height:38px;display:grid;place-items:center;background:#eaf1fa;color:#1767d2;border-radius:8px;font-size:24px}.sequence p{font-size:14px;color:#627691;text-align:center;width:100%}.route-controls{display:grid;grid-template-columns:1fr;gap:10px;margin:20px 0}.vision-scene{border-radius:15px;background:radial-gradient(ellipse,#fff,#eff3f8);padding:15px}.vision-scene svg{max-height:330px;width:100%}.camera-label{font-size:11px;color:#627691}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.answer-grid>div{border-radius:12px;padding:15px;background:#f1f5fa}.answer-grid small,.answer-grid strong,.answer-grid span{display:block}.answer-grid small{font-size:11px;color:#627691}.answer-grid strong{font-size:23px;margin:8px 0}.answer-grid span{font-size:12px}.answer-grid p{grid-column:1/-1;margin:0;color:#627691;font-size:12px;line-height:1.7}.colors{display:grid;gap:10px;margin:16px 0}.colors button{display:flex;align-items:center;gap:15px;background:white;border:1px solid #cbd8ea}.colors i{width:25px;height:25px;border-radius:8px}.controls label{display:block;font-size:13px;margin-top:20px}.controls input[type=range]{width:100%;accent-color:#1767d2;margin:15px 0;height:30px}.error{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:10;background:#fff1e2;color:#843e15;border:1px solid #eebd91;padding:16px 50px 16px 20px;max-width:600px;width:90%;border-radius:14px;box-shadow:0 8px 40px #0002;font-size:14px}.error button{position:absolute;right:3px;top:0;background:none;color:inherit;font-size:22px;padding:10px}
.phone{max-width:760px;padding:0 20px}.phone header{height:80px}.phone .brand b{font-size:20px}.phone .brand b span{font-size:7px}.phone .brand-icon{width:36px;height:36px;font-size:24px}.phone .demo-badge{font-size:9px;padding:7px 9px}.phone .room-layout{display:flex;flex-direction:column;gap:16px}.phone .experiment,.phone .controls{width:100%;min-height:0;padding:20px}.phone .experiment-top{font-size:8px}.phone .room-top{padding:24px 0 20px;align-items:start}.phone .room-top h1{font-size:26px;letter-spacing:-.8px}.phone .eyebrow{font-size:9px;letter-spacing:1px}.phone .connection{font-size:10px;gap:5px;margin-top:3px}.phone .sensor-scene{height:175px;padding-top:10px}.phone .sensor-head{width:115px;height:45px}.phone .sensor-head span{top:-19px;font-size:9px}.phone .beams{height:65px;width:140px}.phone .sample{width:210px;height:40px}.phone .meter-label strong{font-size:25px}.phone .samples>span{padding:12px 9px;font-size:10px}.phone .board{max-height:320px}.phone .vision-scene svg{max-height:210px}.phone .route-controls{grid-template-columns:repeat(3,1fr)}.phone .route-controls button{padding:15px 6px;font-size:13px}.phone .controls h2{font-size:18px;margin-top:22px}.phone .controls .row.lights button{font-size:12px}.phone footer{font-size:9px;flex-direction:column;margin-top:25px}.phone .sequence>span{width:29px;height:29px;font-size:20px}.phone .controls>button{font-size:14px}.phone .controls{padding-bottom:30px}
@media(min-width:1800px){main{max-width:1800px}.room-layout{grid-template-columns:1fr 390px}.experiment{min-height:740px}.board{max-height:610px}.sensor-scene{height:390px;padding-top:40px}.beams{height:200px}.vision-scene svg{max-height:460px}.pairing p{font-size:17px}.hint,.feedback{font-size:18px}}
@media(max-width:950px){main{padding:0 25px}.cards{gap:14px}.activity{padding:22px}.activity h2{font-size:22px}.room-layout{grid-template-columns:1fr 285px;gap:15px}.experiment{padding:22px}.pairing{padding:22px}.how{gap:18px}.hero{padding-top:40px}}
@media(max-width:680px){main{padding:0 18px}header{height:85px}.brand b{font-size:21px}.brand b span{font-size:7px}.demo-badge{font-size:9px;padding:7px 9px}.hero{padding:35px 0}.hero h1{font-size:38px;letter-spacing:-1.5px}.hero p{font-size:15px}.how{flex-wrap:wrap;gap:12px;font-size:11px}.cards{grid-template-columns:1fr}.activity{min-height:290px}.activity h2{font-size:25px}.room-layout{grid-template-columns:1fr}.room-top h1{font-size:27px}.experiment{min-height:0}.pairing{max-width:none}.qr{width:240px}.connection{font-size:10px}footer{flex-direction:column;font-size:10px}.room-top{align-items:start}.eyebrow{font-size:9px}.phone .answer-grid strong{font-size:20px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Touch learning center */
button,a.button{touch-action:manipulation}.hub-nav,.host-tools{display:flex;gap:12px;flex-wrap:wrap;padding:20px 0;align-items:center}.hub-nav button,.host-tools button,.host-tools a{min-height:58px}.hub-nav .fullscreen{margin-left:auto}.hub-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center;padding:38px 0 48px}.hub-hero h1{font-size:clamp(38px,4.4vw,72px);letter-spacing:-2.5px}.hub-hero h1 em{color:#1767d2}.hub-hero p{font-size:21px;color:#52657e;line-height:1.65}.hero-art{position:relative;background:#102449;padding:16px;border-radius:28px;box-shadow:0 18px 40px #10244918;overflow:hidden}.hero-art img{width:100%;border-radius:16px;display:block}.orbit-label{padding:24px 10px 10px;color:#fff;font-size:13px;font-weight:800;letter-spacing:2px;display:flex;justify-content:space-around}.orbit-label span{color:#ffb36c}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:20px 0}.toolbar button{min-height:60px}.hub-stats{display:flex;gap:25px;margin-top:28px;color:#52657e;font-size:13px}.hub-stats b{color:#1767d2;font-size:25px;margin-right:5px}.hub-portals{display:grid;grid-template-columns:1fr 1fr;gap:25px}.hub-portals>button{display:flex;align-items:center;gap:24px;background:#fff;border:1px solid #dbe3ef;padding:25px;text-align:left;border-radius:22px}.hub-portals h2{margin:9px 0;font-size:27px}.hub-portals p{font-weight:400;line-height:1.6;color:#52657e;margin:0}.hub-portals small{color:#1767d2;letter-spacing:1px;font-size:11px}.portal-icon{font-size:35px;background:#e8f1fc;padding:25px;border-radius:18px}.hub-portals>button:last-child .portal-icon{background:#fff0df;color:#a56124}.hub-portals>button>b{margin-left:auto;font-size:28px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0}.section-heading h1{font-size:clamp(30px,3vw,46px);letter-spacing:-1.4px;margin:15px 0}.section-heading p{font-size:18px;color:#52657e}.exercise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.exercise-card{display:flex;flex-direction:column;background:white;border:1px solid #dbe3ef;border-radius:22px;padding:25px;text-align:left;min-height:285px}.exercise-card p{font-weight:400;line-height:1.6;color:#52657e;margin:0 0 22px;font-size:17px}.exercise-card small{color:#627691;font-size:13px}.exercise-card strong{margin-top:auto;color:#1767d2;font-size:15px;width:100%;display:flex;justify-content:space-between}.cinema-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.cinema video{width:100%;aspect-ratio:16/9;background:#102449;display:block;border-radius:18px}.video-list{max-height:640px;overflow:auto;padding-right:6px;overscroll-behavior:contain}.video-list button{background:white;border:2px solid transparent;width:100%;display:flex;align-items:center;gap:12px;text-align:left;padding:10px;margin-bottom:8px;font-size:14px;min-height:82px}.video-list button.active{border-color:#1767d2;background:#e5effc}.video-list img{width:95px;aspect-ratio:16/9;object-fit:cover;border-radius:7px}.video-list small{display:block;font-size:10px;color:#627691;margin-bottom:5px}.toggle,.idle-setting{display:flex;align-items:center;gap:14px;line-height:1.5;font-size:18px;cursor:pointer}.toggle input,.idle-setting input{width:28px;height:28px;accent-color:#1767d2;flex-shrink:0}.media-note{color:#627691;font-size:13px;line-height:1.6}.discuss{padding:22px 28px;background:white;border:1px solid #dbe3ef;border-radius:18px;margin:20px 0}.discuss summary{cursor:pointer;font-size:22px;font-weight:700;min-height:40px}.discuss p{font-size:20px;line-height:1.6}.challenge{max-width:1150px;margin:35px auto}.challenge h1{font-size:clamp(32px,3.2vw,52px);letter-spacing:-1.4px;line-height:1.2}.big-copy{font-size:22px;color:#52657e;line-height:1.5}.progress{height:8px;background:#dee8f4;border-radius:8px;margin:20px 0;overflow:hidden}.progress span{display:block;height:100%;background:#1767d2}.choice-grid{display:grid;gap:16px;margin-top:30px}.choice-grid button{text-align:left;display:flex;align-items:center;gap:22px;font-size:24px;min-height:90px;padding:22px 28px}.choice-grid button>span{background:#e6eef9;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;color:#1767d2}.choice-grid button:disabled{opacity:1}.correct{background:#def2e5;color:#1d653e;border:2px solid #4b9b68}.incorrect{background:#fff0dc;color:#89511f;border:2px solid #d99c50}.explanation{background:#e5eef9;padding:28px;border-radius:20px;margin:25px 0;font-size:20px;line-height:1.6}.explanation h2{margin-top:0}.explanation li{margin:8px 0}.cycle-slots{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:30px 0}.cycle-slots>div{padding:20px;background:#fff;border:2px dashed #a8bfdf;border-radius:20px;display:flex;flex-direction:column;align-items:center;gap:10px}.cycle-slots small{color:#627691;align-self:start}.cycle-slots b{font-size:50px;color:#1767d2}.cycle-slots span{font-size:18px;font-weight:700;text-align:center}.cycle-options{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.cycle-options button{min-height:76px;font-size:18px}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.guide article{border-radius:18px;padding:25px;background:white}.guide article h2{margin-top:0}.guide article p{font-size:18px;line-height:1.7;color:#52657e}.idle-setting{background:#e5eef9;padding:24px;border-radius:18px;margin-top:25px}.touch-board .room-layout{grid-template-columns:minmax(0,1.2fr) minmax(420px,1fr)}.touch-board .controls button{min-height:62px;font-size:18px}.touch-board .controls h2{font-size:22px}.touch-board .controls .route-controls{grid-template-columns:repeat(3,1fr)}.touch-board .controls input[type=range]{height:45px}.touch-board .controls label{font-size:18px}.touch-board .room-top{padding-top:12px}.touch-board .experiment{min-height:650px}.touch-board .controls .hint{font-size:16px}
@media(min-width:1800px){.hub-nav button,.host-tools button,.host-tools a{font-size:20px;min-height:64px}.hub-hero{padding:45px 0 55px}.hub-hero p{font-size:25px}.exercise-card{min-height:310px;padding:30px}.exercise-card h2{font-size:30px}.exercise-card p{font-size:21px}.cinema-grid{grid-template-columns:1fr 340px}.video-list{max-height:735px}.video-list button{font-size:17px}.touch-board .controls button{font-size:21px;min-height:70px}.touch-board .controls h2{font-size:25px}}
@media(max-width:1100px){.hub-nav button{font-size:13px;padding:12px}.hub-hero{gap:22px}.hub-hero p{font-size:18px}.hub-hero .toolbar button{font-size:14px}.hub-portals{gap:15px}.portal-icon{padding:15px}.hub-portals h2{font-size:22px}.exercise-grid{grid-template-columns:repeat(2,1fr)}.touch-board .room-layout{grid-template-columns:1fr 1fr}.touch-board .controls button{font-size:14px}.cinema-grid{grid-template-columns:1fr 240px}.video-list img{width:65px}}
@media(max-width:760px){.hub-nav{gap:8px}.hub-nav .fullscreen{margin-left:0}.hub-hero{grid-template-columns:1fr;padding-top:20px}.hub-hero h1{font-size:44px}.hero-art{max-width:600px}.hub-portals,.cinema-grid,.guide-grid{grid-template-columns:1fr}.hub-stats{gap:14px}.hub-portals>button{padding:20px}.exercise-grid{grid-template-columns:1fr}.section-heading{align-items:start;flex-direction:column}.video-list{max-height:280px}.video-list img{width:100px}.touch-board .room-layout{grid-template-columns:1fr}.touch-board .experiment{min-height:0}.choice-grid button{font-size:18px;padding:18px}.cycle-slots,.cycle-options{grid-template-columns:repeat(2,1fr)}.explanation{font-size:17px;padding:20px}.hub-hero h1{letter-spacing:-1.8px}.host-tools{gap:8px}.host-tools button,.host-tools a{font-size:13px;padding:12px}.challenge{margin-top:20px}.guide article p{font-size:16px}}
.hub-nav,.host-tools{position:sticky;top:0;z-index:5;background:#f3f6bf00;background:#f3f6fb;border-bottom:1px solid #dbe3ef}.manual-threshold{margin:14px 0;background:#fff;border-radius:12px;padding:15px;border:1px solid #cbd8ea}.manual-threshold summary{cursor:pointer;min-height:32px;display:list-item;font-size:16px;font-weight:650}.manual-threshold button{width:100%}.cinema video{max-height:58vh;object-fit:contain}.touch-board header{height:85px}.touch-board .controls h2{margin-top:20px}.touch-board .sensor-scene{height:330px}.touch-board .beams{height:150px}.touch-board .experiment{min-height:600px}.touch-board .controls>button{margin:4px 0}.touch-board .controls{padding:24px}.touch-board .controls .row{margin:10px 0}.touch-board .controls .manual-threshold{margin:14px 0 10px}.touch-board .experiment-top,.touch-board .meter-label,.touch-board .samples>span{font-size:16px}
@media(max-width:760px){.hub-nav,.host-tools{position:static}.cinema video{max-height:none}.touch-board .sensor-scene{height:240px}.touch-board .beams{height:90px}.touch-board .experiment{min-height:0}}
.funding{align-items:center;gap:35px;background:white;padding:22px 28px;border-radius:18px;line-height:1.6}.funding>div{flex-shrink:0;display:flex;flex-direction:column;gap:5px}.funding img{width:245px;height:auto;display:block;margin-top:10px}.funding b{font-size:16px}.funding p{font-size:14px;max-width:1080px;margin:0;color:#465d7b}.funding span{font-size:12px}@media(max-width:680px){.funding{align-items:start}.funding p{font-size:12px}}