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@media(max-width:760px){header{height:69px;padding:0 22px}.brand{font-size:25px}.brand span{font-size:10px}.brand b{font-size:21px;margin-left:5px}.header-note{display:none}.header-actions{gap:7px}.header-actions button{font-size:10px;padding:9px 13px}.header-actions #motion{font-size:19px;padding:6px 11px}.header-actions span{margin-left:7px}.world-light{background:linear-gradient(180deg,#f4f5fbdf,transparent 65%)}.floor-mark{bottom:17%;font-size:7px;right:22%;letter-spacing:2px}.copy,.hero .copy{left:25px;right:25px;top:105px;transform:none;width:auto;max-width:none}.eyebrow,.hero .eyebrow{font-size:8px;letter-spacing:1.2px;margin-bottom:18px}h1{font-size:47px;letter-spacing:-.06em;line-height:1.02}.hero .copy{top:115px}.hero .copy>p{font-size:13px;line-height:1.6;margin-top:19px}.hero-label{margin-top:18px;gap:10px}.hero-label .gem{font-size:26px}.hero-label strong{font-size:15px}.hero-label b{font-size:9px}.scroll-start{margin-top:21px;font-size:10px;gap:12px}.scroll-start>span{width:27px;height:27px;font-size:14px}.desktop{display:none}.service .copy{top:96px}.service .eyebrow{font-size:7px;margin-bottom:15px}.access{font-size:9px;margin-bottom:11px}h2{font-size:36px}.service h3{font-size:14px;margin-top:10px}.service .copy>p{font-size:12px;line-height:1.65;margin-top:14px;max-width:100%}.flow{margin-top:16px;padding-top:12px;gap:8px;max-width:none}.flow small{font-size:8px;margin-bottom:5px}.flow span{font-size:9px}.flow i{font-size:10px}.actions{margin-top:13px;gap:26px}.actions a,.actions button{font-size:11px;padding:7px 0}.screen-label{left:26px;top:auto;bottom:39%;font-size:10px;gap:8px}.screen-label span{font-size:7px;letter-spacing:1px}.screen-open{left:50%;bottom:13%;font-size:10px;padding:8px 14px}.screen-open span{font-size:15px}.chapter-rail{display:none}.hud{height:61px;padding:0 23px;background:linear-gradient(0deg,#edf0f7dd,transparent)}.hud>span{font-size:9px;max-width:140px}.hud #progress-count{font-size:12px}.scroll-cue{font-size:8px;gap:5px}.scroll-symbol{font-size:14px}.hud i{font-size:9px}#menu{right:18px;top:65px;width:250px;max-height:75svh}.benefits .copy{width:auto;top:100px}.benefits h2{font-size:36px}.benefits .copy>p{font-size:12px;margin-top:16px}.text-link{font-size:10px;margin-top:12px}.benefit-grid{left:24px;right:24px;top:43%;bottom:16%;gap:11px}.benefit-grid article{padding:16px;border-radius:12px}.benefit-grid article>span{font-size:20px;margin-bottom:10px}.benefit-grid small{font-size:6px;letter-spacing:.8px;margin-bottom:7px}.benefit-grid h3{font-size:14px;line-height:1.4}.benefit-grid p{font-size:8px;margin-top:10px}.footnote{left:26px;right:26px;bottom:9%;font-size:8px;line-height:1.6}.setup .copy{top:99px}.setup h2{font-size:34px}.setup .copy>p{font-size:12px;margin-top:15px}.setup ol{margin-top:18px}.setup li{font-size:12px;margin-top:13px;gap:12px}.setup li>b{font-size:8px}.setup li small{font-size:10px;line-height:1.5;margin-top:4px}.setup .actions{margin-top:16px}.account-label{left:50%;top:auto;bottom:32%;padding:9px 15px;gap:10px;font-size:20px}.account-label span{font-size:10px}.account-label b{font-size:10px;margin-left:2px}.end-copy{left:24px;right:24px;top:105px;transform:none;width:auto;text-align:left}.ending h2{font-size:47px}.end-copy>p{font-size:13px;line-height:1.6;margin-top:18px}.resources{grid-template-columns:1fr;gap:13px;margin-top:23px}.resources a{padding:19px 21px;border-radius:12px}.resources span{font-size:7px}.resources h3{font-size:23px;margin-top:10px}.resources h3 br{display:none}.resources h3 b{font-size:17px}.resources p{font-size:10px;margin-top:11px}.telegram-note{font-size:9px;line-height:1.6;margin-top:17px}.end-links{gap:15px;flex-wrap:wrap;justify-content:flex-start;margin-top:15px}.end-links button{font-size:10px;padding:5px 0}.dialog-top{padding:13px 16px}.dialog-top h2{font-size:15px}.detail-copy{padding:24px 20px}.detail-copy p{font-size:13px}.detail-copy h3{font-size:19px}.detail-copy summary{font-size:13px}.prompt-text{font-size:16px!important}}
@media(max-width:760px) and (max-height:720px){.hero .copy{top:90px}h1{font-size:41px}.hero .eyebrow{margin-bottom:14px}.hero .copy>p{margin-top:15px}.hero-label{margin-top:13px}.scroll-start{margin-top:12px}.service .copy{top:83px}.service .eyebrow{margin-bottom:11px}.service h2{font-size:31px}.service h3{font-size:13px;margin-top:8px}.service .copy>p{font-size:11px;margin-top:10px;line-height:1.55}.flow{margin-top:11px;padding-top:9px}.actions{margin-top:9px}.access{margin-bottom:9px;font-size:8px}.screen-label{bottom:36%;font-size:9px}.screen-open{bottom:11%;padding:7px 12px}.benefits .copy,.setup .copy{top:83px}.benefits h2,.setup h2{font-size:30px}.benefits .copy>p,.setup .copy>p{font-size:11px;margin-top:12px}.benefit-grid{top:43%;bottom:17%;gap:9px}.benefit-grid article{padding:11px 13px}.benefit-grid article>span{font-size:17px;margin-bottom:6px}.benefit-grid h3{font-size:12px}.benefit-grid small{font-size:6px;margin-bottom:5px}.benefit-grid p{font-size:7px;margin-top:6px}.setup li{margin-top:10px;font-size:11px}.setup li small{font-size:9px}.setup ol{margin-top:13px}.account-label{bottom:30%;padding:7px 13px}.end-copy{top:85px}.ending h2{font-size:39px}.end-copy>.eyebrow{margin-bottom:13px}.end-copy>p{font-size:12px;margin-top:13px}.resources{margin-top:18px;gap:10px}.resources a{padding:15px 18px}.resources h3{font-size:21px}.telegram-note{margin-top:12px}.end-links{margin-top:10px}.hud{height:49px}}
@media(min-width:761px) and (max-height:780px){.eyebrow{margin-bottom:18px}.service h2{font-size:47px}.service .copy>p{font-size:13px;margin-top:17px;line-height:1.7}.flow{margin-top:21px;padding-top:16px}.actions{margin-top:21px}.hero h1{font-size:63px}.hero .copy>p{font-size:14px}.scroll-start{margin-top:28px}.benefit-grid{top:22%;bottom:21%}.benefit-grid article{padding:18px}.benefit-grid article>span{margin-bottom:10px}.setup h2{font-size:45px}.setup ol{margin-top:19px}.setup li{margin-top:15px}.setup .copy>p{font-size:13px}.ending h2{font-size:60px}.resources{margin-top:27px}.resources a{padding:23px}}

@media(max-width:760px){.screen-label{display:none}.account-label{bottom:33.5%}.screen-open{bottom:10.5%}}
@media(max-width:760px) and (max-height:720px){.account-label{bottom:32%}.screen-open{bottom:9%}}

h1,h2{letter-spacing:-.045em}

/* Keep the welcoming introduction clear of the 3D screens on phones. */
@media(max-width:760px){.hero-label{display:none}}
@media(max-width:760px) and (max-height:720px){.account-label{bottom:29%}}

/* Expanded student scenarios: one topic at a time, including on phones. */
.detail-copy .detail-hint{font-size:12px;color:#7e8aa2;margin-bottom:8px}
.capability-list{margin:4px 0 28px}.capability-list summary{list-style:none;display:flex;gap:15px;align-items:baseline;padding:19px 0;line-height:1.5}.capability-list summary::-webkit-details-marker{display:none}.capability-list summary:after{content:'+';margin-left:auto;color:#8190b0;font-size:20px;font-weight:400}.capability-list details[open] summary:after{content:'−'}.capability-number{font-size:10px;letter-spacing:1px;color:#8996b4;flex:none}.capability-content{padding:0 0 20px 30px}.capability-content p{margin-bottom:15px}.capability-source{display:inline-block;margin-top:9px;font-size:11px!important}.first-prompt-heading{margin-top:28px}.prompt-example{margin:20px 0 5px}.prompt-example .prompt-text{font-size:14px!important;line-height:1.8}.reading summary{cursor:pointer;padding:16px 0;line-height:1.5}.reading blockquote{line-height:1.8;color:#60769e;margin:16px 0;padding:16px;background:#edf0f8;border-radius:8px}
@media(max-width:760px){.capability-list summary{font-size:13px;gap:10px;padding:16px 0}.capability-content{padding-left:0}.detail-copy .prompt-text{font-size:13px!important;padding:17px}.first-prompt-heading{font-size:17px!important}}

/* Real portrait screenshots in scroll-driven 3D phone chapters. */
.phone-panel .copy{width:37vw;max-width:520px}.phone-panel h2{font-size:clamp(36px,4vw,62px)}.phone-panel .copy>p{font-size:14px;line-height:1.8;max-width:430px}.phone-steps{list-style:none;padding:0;margin:24px 0 0}.phone-steps li{display:flex;align-items:baseline;gap:12px;font-size:12px;line-height:1.6;margin:12px 0;color:#62708a}.phone-steps li>span{font-size:9px;color:#8b99b5;flex:none}.phone-panel .actions button{color:#6074a5}.phone-caption{position:absolute;left:85%;top:45%;font-size:11px;color:#7e8bab;writing-mode:vertical-rl;letter-spacing:.5px}.phone-caption small{font-size:7px;letter-spacing:1.8px;margin-top:15px}.phone-zoom{position:absolute;left:85%;bottom:22%;width:36px;height:36px;border:1px solid #fff;background:#fffc;color:#7385ad;border-radius:50%;font-size:23px}.phone-shortcuts{display:flex;gap:25px;margin-top:8px}.phone-shortcuts button{background:none;padding:8px 0;color:#697da5;font-size:11px}.portrait-original{background:#080a0f;max-height:none;width:auto;max-width:100%;max-height:calc(90svh - 76px);margin:auto}.phone-walkthrough{padding:25px 30px}.walkthrough-note{font-size:12px;line-height:1.7;color:#7d88a0;max-width:730px;margin:0 auto 25px}.phone-walkthrough article{max-width:780px;margin:0 auto 35px;display:grid;grid-template-columns:1fr 260px;gap:40px;align-items:center;padding-bottom:30px;border-bottom:1px solid #e0e6f0}.walkthrough-copy h3{font-size:23px;font-weight:500;line-height:1.3;letter-spacing:-.5px;margin-bottom:15px}.walkthrough-copy p{font-size:14px;line-height:1.8;color:#73819a}.phone-walkthrough figure{position:relative;width:260px;margin:0;border:5px solid #c5ccdc;border-radius:29px;overflow:hidden;background:#080a0f;box-shadow:0 16px 35px #33435c1a}.phone-walkthrough figure img{display:block;width:100%;height:auto}.screenshot-spot{position:absolute;border:2px solid #c8d2ff;box-shadow:0 0 0 4px #627ccd66;border-radius:50%;width:12%;aspect-ratio:1;transform:translate(-50%,-50%);pointer-events:none}.phone-walkthrough .detail-copy{padding:0;max-width:780px}
@media(max-width:760px){.phone-panel .copy{width:auto;top:96px}.phone-panel h2{font-size:36px}.phone-panel .copy>p{font-size:12px;line-height:1.65;margin-top:14px}.phone-steps{margin-top:14px}.phone-steps li{font-size:10px;line-height:1.5;margin:7px 0;gap:9px}.phone-steps li>span{font-size:8px}.phone-panel .actions{margin-top:7px}.phone-panel .actions button{font-size:10px}.phone-caption{left:auto;right:23px;top:auto;bottom:26%;font-size:9px}.phone-caption small{font-size:6px}.phone-zoom{left:auto;right:20px;bottom:15%;height:32px;width:32px;font-size:21px}.phone-shortcuts{margin-top:0;gap:20px}.phone-shortcuts button{font-size:10px;padding:5px 0}.phone-walkthrough{padding:22px 18px}.walkthrough-note{font-size:11px}.phone-walkthrough article{grid-template-columns:1fr;gap:20px;margin-bottom:28px}.walkthrough-copy h3{font-size:20px}.walkthrough-copy p{font-size:12px}.phone-walkthrough figure{width:min(260px,100%);margin:auto}}
@media(max-width:760px) and (max-height:720px){.phone-panel .copy{top:83px}.phone-panel h2{font-size:30px}.phone-panel .eyebrow{margin-bottom:14px}.phone-panel .copy>p{font-size:11px;margin-top:11px}.phone-steps{margin-top:11px}.phone-steps li{font-size:9px;margin:6px 0}.phone-panel .actions{margin-top:5px}.phone-panel .actions button{padding:5px 0}.phone-shortcuts button{font-size:9px}}

/* Final native screenshot presentation and a persistent reading alternative. */
#menu .reading-link{display:block;padding:15px 14px;margin-top:6px;border-top:1px solid #e0e3ed;font-size:13px;color:#5f64a0}
#dialog-body{background:#f1f1f7}
.dialog-image{padding:12px;background:transparent}
.zoomed .dialog-image{padding:0}
.reading-mode .world,.reading-mode #scroll-track,.reading-mode #experience,.reading-mode .hud,.reading-mode .chapter-rail,.reading-mode header{display:none}
.reading-mode .reading{display:block;position:relative;margin:0 auto;padding:36px 24px 80px;max-width:850px}
.back-to-story{display:inline-block;margin-bottom:26px;padding:12px 0;color:#646b9b;font-size:14px}
.render-notice{padding:16px;border-radius:12px;background:#e7e9f5}
.fallback .back-to-story{display:none}
@media(max-width:760px){.header-actions button{min-height:42px}.phone-zoom{min-width:42px;min-height:42px}.screen-open{min-height:40px}.actions a,.actions button{min-height:36px}.end-links button{min-height:40px}.phone-shortcuts button{min-height:36px}.reading h2{font-size:30px}.reading h3{font-size:22px}.reading p,.reading li{font-size:16px;line-height:1.75}}

/* The shader library writes fixed inline dimensions; keep its layer fluid. */
#shader{width:100%!important;height:100%!important}

@media(max-width:760px) and (max-height:720px){.end-links{column-gap:8px;row-gap:0}.end-links button{min-height:32px}.resources a{padding:13px 18px}}
/* In a short landscape viewport the complete reading guide stays comfortable. */
@media(max-height:500px) and (orientation:landscape){.world,#scroll-track,#experience,.hud,.chapter-rail,header{display:none}.reading,.reading:target{display:block;position:relative;z-index:3;margin:0 auto;padding:28px;max-width:850px}.back-to-story{display:none}}