/* Dark particle stage contracts into the light workspace. */
:root{background:#f0f8fc;color-scheme:light;--stage-aspect:1.7778}
html,body{background:#f0f8fc}main{height:auto;padding-top:100svh;pointer-events:auto}
.scene-frame{position:fixed;top:0;left:0;z-index:10;transform-origin:0 0;background:#01040a;overflow:hidden;pointer-events:none;will-change:transform,border-radius}.scene-frame #scene,.scene-frame .vignette,.scene-frame .scene-fallback{position:absolute;inset:0}
.hero-ui{z-index:20}.site-header{animation:none!important;opacity:1;transform:none;filter:none}.brand,.brand span,.site-header nav,.site-header nav a,.motion-toggle{transition:color .35s,background .35s,border-color .35s}.light-stage .brand{color:#242c32}.light-stage .brand span{color:#7b95a5}.light-stage .site-header nav{background:#ffffffdc;border-color:#d8e7ef;box-shadow:0 6px 25px #386a8810}.light-stage .site-header nav a{color:#334c5c}.light-stage .motion-toggle{background:#fff;color:#526e7f;border-color:#d9e6ed}.light-stage .custom-cursor-ring{border-color:#3da7e7}.light-stage .custom-cursor-ring::after{background:#3da7e7}
#workspace-title:focus,#platform-title:focus{outline:none}
.second-ui{position:relative;inset:auto;z-index:20;opacity:1;visibility:visible;pointer-events:auto;padding:118px 40px 28px;color:#252e33;min-height:100svh;will-change:auto}.reveal-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}.reveal-eyebrow{font-size:10px;font-weight:600;letter-spacing:1.9px;color:#7c96a7}.second-ui .reveal-heading h2{position:static;width:auto;margin:12px 0 0;font:500 clamp(28px,3.2vw,46px)/1.15 Geist,"Microsoft YaHei",sans-serif;letter-spacing:-1.5px}.reveal-heading>p{margin:0;font-size:13px;line-height:1.7;color:#7b92a0}
.reveal-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,1fr);gap:24px;align-items:start}.molecule-panel{min-width:0}.stage-slot{aspect-ratio:var(--stage-aspect);width:100%;pointer-events:none}.stage-caption{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:18px 2px 0}.stage-caption>div{display:flex;flex-direction:column;gap:7px}.stage-caption span{font-size:9px;letter-spacing:1.6px;color:#7694a9}.stage-caption strong{font-size:17px;font-weight:500}.return-cover{border:0;background:none;color:#208bcf;font-size:11px;white-space:nowrap;padding:10px;cursor:pointer}.second-ui .molecule-legend{position:static;display:flex;margin:13px 2px 0;font-size:10px;color:#7e96a5;gap:18px}.molecule-legend .hydrogen{background:#bccfdd;color:#bccfdd}.molecule-legend i{box-shadow:none}
.workspace-panel{padding:26px 28px;border-radius:30px;background:#fff;box-shadow:0 12px 40px #1a557008}.workspace-panel h3{margin:10px 0;font-size:24px;letter-spacing:-.8px;font-weight:500}.workspace-panel>p{font-size:11px;color:#8aa0ae;margin:0 0 20px}.workspace-grid{display:grid;grid-template-columns:1fr;gap:10px;margin:0}.workspace-grid a{min-height:92px;padding:15px 20px 15px 56px;border:1px solid #e5eff4;border-radius:18px;background:#f4f9fc;color:#293943;gap:4px;transition:transform .2s,background .2s,border-color .2s}.workspace-grid a:nth-child(2){background:#ecf6fc}.workspace-grid a:nth-child(3){background:#f6f9e9}.workspace-grid a>span{position:absolute;left:18px;top:19px;color:#8ca5b6;font-size:8px;letter-spacing:0;width:24px;overflow:hidden;white-space:nowrap}.workspace-grid strong{font-size:20px;margin:0;font-weight:500}.workspace-grid small{font-size:10px;color:#8096a5;padding-right:8px}.workspace-grid i{font-size:22px;right:18px;bottom:30px;color:#248bce}.workspace-grid a:hover{transform:translateX(3px);background:#e0f2fd;border-color:#8bc9ed}.workspace-note{display:block;margin-top:18px;font-size:10px;color:#93a6b1}.workspace-unlock{margin:12px 0 55px;font-size:13px}.has-entered.reveal-ready .workspace-grid a{animation:workspace-rise .55s cubic-bezier(.16,1,.3,1) both}.workspace-grid a:nth-child(2){animation-delay:.1s!important}.workspace-grid a:nth-child(3){animation-delay:.2s!important}@keyframes workspace-rise{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:none}}
.path-heading{margin:32px 0 18px;display:flex;flex-wrap:wrap;gap:9px 22px;align-items:center}.path-heading>.reveal-eyebrow{width:100%}.path-heading h3{font-size:23px;font-weight:500;margin:0;letter-spacing:-.6px}.path-heading a{margin-left:auto;font-size:11px;color:#278ed0;text-decoration:none}.second-ui .feature-grid{position:static;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;visibility:visible!important}.second-ui .feature-grid article{height:210px;padding:23px;border:1px solid #e5f0f5;background:#fff;border-radius:26px;opacity:1;transform:none;animation:none;backdrop-filter:none;box-shadow:0 10px 35px #19628c06}.second-ui .feature-grid article:nth-child(2){background:#e9f5fc}.second-ui .feature-grid article:nth-child(3){background:#f5f8e7}.second-ui .feature-grid article>span{font-size:12px;color:#8ba5b5}.second-ui .feature-grid h3{font-size:19px;line-height:1.3}.second-ui .feature-grid p{font-size:11px;line-height:1.7;color:#8196a2}.second-ui .feature-grid a{font-size:11px;color:#248dce;margin-top:14px}.reveal-footer{display:flex;justify-content:space-between;gap:16px;margin-top:28px;font-size:10px;color:#91a7b5}.reveal-footer a{color:#2689c7;text-decoration:none}.logo-flight{display:none}a:focus-visible,button:focus-visible{outline-color:#228bd1}.no-script-entry{background:#fff;color:#253d4e;border-radius:16px}.no-script-entry a{color:#197cb9}body:not(.has-js) .scene-frame{width:100vw;height:100svh}
@media(min-width:1440px){.second-ui{padding-left:5vw;padding-right:5vw}.reveal-grid{gap:32px}.workspace-panel{padding:32px}.workspace-grid a{min-height:108px}}
@media(max-width:1000px){.reveal-grid{grid-template-columns:minmax(0,1.15fr) minmax(300px,1fr)}.second-ui{padding-left:24px;padding-right:24px}.workspace-panel{padding:24px 20px}.reveal-heading>p{max-width:250px}.second-ui .feature-grid article{padding:18px;height:200px}}
@media(max-width:700px){.second-ui{padding:105px 20px 26px}.reveal-heading{display:block;margin-bottom:22px}.reveal-heading>p{max-width:none;margin-top:14px;font-size:12px}.reveal-grid{grid-template-columns:1fr;gap:24px}.workspace-panel{padding:24px;border-radius:26px}.workspace-panel h3{font-size:23px}.stage-caption strong{font-size:16px}.stage-caption span{font-size:8px}.second-ui .feature-grid{grid-template-columns:1fr 1fr;gap:12px}.second-ui .feature-grid article{height:220px;padding:19px}.second-ui .feature-grid p{display:block}.second-ui .feature-grid h3{font-size:18px}.path-heading h3{font-size:21px}.path-heading a{margin-left:0}.reveal-footer{font-size:9px}.scene-hint{max-width:90vw;white-space:normal;text-align:center}.hero-title{bottom:225px}.hero-title h1{font-size:clamp(38px,9.8vw,54px)}.hero-copy{bottom:50px}.workspace-unlock{margin-bottom:20px}}
@media(max-width:380px){.second-ui{padding-left:16px;padding-right:16px}.workspace-panel{padding:22px 18px}.second-ui .feature-grid article{padding:16px;height:225px}.second-ui .feature-grid h3{font-size:16px}.hero-copy{width:calc(100vw - 40px);left:20px}.hero-title{left:20px}.hero-title .kicker{font-size:9px}.hero-copy>p{font-size:12px}.actions .pill{font-size:12px;padding:13px 15px}.brand{font-size:17px}.site-header{left:16px;right:16px}.demo{font-size:11px;padding:11px 13px}}
@media(prefers-reduced-motion:reduce){.workspace-grid a,.site-header,.brand,.brand span,.site-header nav,.site-header nav a,.motion-toggle{animation:none!important;transition:none!important}.scene-frame{will-change:auto}}

/* Leave space for a glimpse of the classroom after choosing a workspace. */
.second-ui{min-height:0;padding-bottom:18px}.reveal-grid{grid-template-columns:minmax(0,1.2fr) minmax(320px,1fr)}.stage-slot{max-height:56svh;aspect-ratio:1.6}.classroom-gallery{padding-top:28px}.classroom-heading h2{font-size:clamp(30px,3.3vw,46px);margin:12px 0}.classroom-stage{margin-top:24px}@media(max-width:700px){.reveal-grid{grid-template-columns:1fr}.stage-slot{max-height:none;aspect-ratio:1.6}.classroom-gallery{padding-top:22px}}
@media(min-width:901px){.second-ui{padding-top:100px}.reveal-heading{margin-bottom:20px}.workspace-panel{padding:20px 24px}.workspace-grid a{min-height:72px;padding-top:12px;padding-bottom:12px}.workspace-grid strong{font-size:18px}.workspace-grid i{bottom:23px}.workspace-note{margin-top:12px}.workspace-panel>p{margin-bottom:15px}.stage-slot{aspect-ratio:2;max-height:42svh}.stage-caption{margin-top:12px}.second-ui .molecule-legend{margin-top:10px}}
@media(min-width:901px){.workspace-grid a{box-sizing:border-box}}
@media(min-width:901px){.second-ui{padding-top:88px}.second-ui .reveal-heading h2{margin-top:8px}.workspace-panel{padding:16px 24px}.workspace-panel h3{line-height:1.2;margin:6px 0}.workspace-panel>p{line-height:1.5;margin-bottom:8px}.workspace-grid{gap:8px}.workspace-note{margin-top:8px}}
@media(min-width:901px){.second-ui{padding-bottom:8px}.stage-slot{max-height:34svh}.workspace-grid a{min-height:64px;padding-top:9px;padding-bottom:9px}.workspace-panel h3{font-size:22px;margin:4px 0}.workspace-note{display:none}.workspace-grid i{bottom:19px}}