:root{color-scheme:dark;--ink:#f2f5f7;--muted:#c5cdd5;--blue:#9bd6ff;--line:#ffffff29;--pad:clamp(24px,6vw,100px);font-family:Arial,Helvetica,sans-serif;font-synthesis:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:115px}
body{margin:0;background:#000;color:var(--ink);font-size:17px;line-height:1.7}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a,summary{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:disabled{cursor:default}
button{color:inherit}
button:focus-visible,a:focus-visible,summary:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--blue);outline-offset:6px}
img{display:block;max-width:100%;height:auto}
[hidden]{display:none!important}
em{font-style:normal;color:var(--blue)}
p{margin:0 0 22px;color:var(--muted)}
h1,h2,h3{margin:0;font-weight:400;line-height:1.09;letter-spacing:-.04em;text-wrap:balance}
h2{font-size:clamp(40px,4.9vw,76px)}
h3{font-size:clamp(29px,2.6vw,39px)}
h2,h3{color:var(--ink)}
h2 em,h3 em{color:var(--blue)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.skip{position:fixed;left:20px;top:-100px;z-index:60;background:#eef7ff;color:#111;padding:8px 20px}
.skip:focus{top:20px}
.terrain{position:fixed;inset:-20vmax;background:url('assets/lunel-regolith.png') center/cover no-repeat;opacity:.3;pointer-events:none;z-index:0}
main{position:relative;z-index:1}
.header{position:fixed;inset:0 0 auto;height:104px;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);background:rgba(2,5,8,.89);backdrop-filter:blur(16px);border-bottom:1px solid #9bd6ff21;visibility:hidden;transform:translateY(-100%);transition:transform .4s,visibility .4s}
.header.is-visible{visibility:visible;transform:translateY(0)}
.brand-logo{display:block;position:relative;flex-shrink:0;width:124px;height:92px;overflow:hidden}
.brand-logo img{position:absolute;width:260px;max-width:none;left:-68px;top:-30px;mix-blend-mode:screen}
.desktop-nav{display:flex;align-items:center;gap:42px;font-size:13px;letter-spacing:.06em}
.desktop-nav a{position:relative;padding:12px 0}
.desktop-nav a:after{content:'';position:absolute;left:0;right:100%;bottom:4px;height:1px;background:var(--blue);transition:right .2s}
.desktop-nav a:hover:after{right:0}
.desktop-nav a:last-child{color:var(--blue)}
.header-tools{display:flex;gap:28px;align-items:center}
.language{display:flex;align-items:center;font-size:12px;gap:7px}
.language button{border:0;background:none;padding:12px 6px;color:#9aa6b0}
.language button[aria-pressed=true]{color:#fff}
.language span{color:#617180}
.menu-toggle{display:none;border:0;background:none;padding:12px 0;font-size:12px}
.mobile-nav{position:fixed;top:104px;left:0;right:0;z-index:29;background:#07101a;border-bottom:1px solid var(--line);padding:20px var(--pad) 28px}
.mobile-nav a{display:block;padding:15px 0;font-size:22px}
.hero.brand-intro{position:relative;height:100vh;height:100svh;min-height:320px;background:#000;overflow:visible;isolation:isolate}
.intro-stage{position:relative;height:100vh;height:100svh;min-height:320px;overflow:hidden}
.intro-art{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.intro-art img{width:min(190vw,1900px,200svh);max-width:none;height:auto;flex-shrink:0;opacity:1;transform:none;will-change:opacity}
.intro-scroll{position:absolute;left:50%;bottom:max(33px,env(safe-area-inset-bottom));transform:translateX(-50%);display:flex;flex-direction:column;gap:17px;align-items:center;padding:12px 20px 0;color:#b7cadd;font-size:10px;letter-spacing:.18em;text-transform:uppercase;white-space:nowrap;opacity:1}
.scroll-stem{height:37px;width:1px;background:linear-gradient(#91d2ff,#91d2ff20);position:relative}
.scroll-stem:after{content:'';position:absolute;bottom:0;left:-2px;width:5px;height:5px;border-right:1px solid var(--blue);border-bottom:1px solid var(--blue);transform:rotate(45deg)}
/* One uninterrupted tonal journey; every content section has a transparent background. */
.story{background:linear-gradient(180deg,#000 0%,rgba(6,9,12,.97) 6%,rgba(28,33,38,.8) 22%,rgba(86,91,95,.75) 43%,rgba(46,53,61,.82) 58%,rgba(21,29,37,.94) 75%,#080b0f 91%,#000 100%)}
.section{padding:100px var(--pad) 105px;max-width:1640px;margin:0 auto;position:relative;background:transparent}
.section-label{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:20px;margin-bottom:64px;color:#b3c8d8;gap:20px}
.micro{display:block;font-size:10px;font-weight:400;letter-spacing:.19em;line-height:1.7;text-transform:uppercase}
.section-label .cross{font-size:18px;font-weight:300}
.mission{padding-top:95px;padding-bottom:105px}
.mission-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:9%}
.mission h2{font-size:clamp(43px,5.4vw,82px)}
.mission-copy{padding-top:4px}
.lead{font-size:clamp(23px,2vw,29px);line-height:1.45;letter-spacing:-.025em;color:#f1f5f8;margin-bottom:28px}
.status{display:flex;gap:17px;align-items:center;border-top:1px solid var(--line);margin-top:38px;padding-top:25px}
.status-dot{width:6px;height:6px;border-radius:50%;background:#80c9ff;box-shadow:0 0 14px #55b6ff60;flex-shrink:0}
.status .micro{color:#a9bdcd}
.status strong{font-size:14px;font-weight:400;color:#e6edf3}
.origin-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:9%;align-items:center}
.origin-emblem{position:relative;width:100%;max-width:560px;aspect-ratio:6/5;margin-inline:auto;overflow:hidden;min-width:0;mix-blend-mode:screen}
.origin-emblem img{position:absolute;width:200%;max-width:none;height:auto;left:50%;top:50%;transform:translate(-50%,-45%)}
.origin h2{margin-bottom:30px;font-size:clamp(38px,4.3vw,65px);line-height:1.09}
.origin-copy p:last-child{color:#d5e2ec}
.helium-intro{display:grid;grid-template-columns:.72fr 1.28fr;gap:11%;align-items:center}
.helium-intro h2{font-size:clamp(38px,4.3vw,65px);margin-bottom:30px}




.atom-figure{margin:0;min-width:0;text-align:center}
.atom-diagram{display:block;width:100%;max-width:430px;height:auto;margin-inline:auto}
.atom-symbol{font-family:Arial,Helvetica,sans-serif;font-size:38px;fill:#d8edfc;letter-spacing:-1px}
.atom-nucleon{font-family:Arial,Helvetica,sans-serif;font-size:19px;font-weight:700;text-anchor:middle;fill:#122e45}
.atom-electron-label{font-family:Arial,Helvetica,sans-serif;font-size:17px;font-weight:700;text-anchor:middle;fill:#112f43}
.atom-label{font-family:Arial,Helvetica,sans-serif;font-size:12px;letter-spacing:1.1px;text-anchor:middle;fill:#c2d8e8}
.atom-legend{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:4px 0 17px;padding:17px 0 0;border-top:1px solid #b9dfff40}
.atom-legend li{display:flex;flex-direction:column;gap:1px;font-size:12px;color:#c9dbe8;line-height:1.5}
.atom-legend strong{font-size:22px;font-weight:400;color:#e9f6ff}
.atom-figure figcaption{font-size:11px;line-height:1.65;color:#b4c6d3;max-width:36ch;margin:0 auto}
.helium-quantum{max-width:900px;margin:36px auto 0;font-size:16px;line-height:1.8}
.uses{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4%;margin-top:55px}
.uses article{border-top:1px solid #ffffff42;padding-top:26px}
.uses .micro{color:#cfdef0;margin-bottom:25px}
.uses h3{margin-bottom:25px}
.science-note{display:grid;grid-template-columns:1fr 1.15fr;gap:9%;border-top:1px solid var(--line);padding-top:27px;margin-top:23px}
.science-note .micro{color:#cfdef0}
.science-note p{font-size:15px}
.moon-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:9%}
.moon h2{font-size:clamp(39px,4.7vw,70px)}
.pull-quote{font-size:clamp(37px,5vw,75px);line-height:1.2;letter-spacing:-.04em;margin:75px 0 0;padding-left:clamp(24px,3vw,52px);border-left:1px solid #94cdff88;color:#f3f7fb}
.path-top{display:grid;grid-template-columns:1.15fr .85fr;gap:10%;align-items:end}
.path h2{font-size:clamp(37px,4.4vw,67px)}
.path-top>p{margin-bottom:5px}
.roadmap{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:4%;padding:0;margin:64px 0 0}
.roadmap li{border-top:1px solid #aacbdf48;padding:25px 0 0;display:flex;gap:20px}
.step-index{font-size:12px;color:var(--blue);padding-top:1px}
.roadmap .micro{color:#9fc1dc;margin-bottom:18px}
.roadmap h3{font-size:26px;margin-bottom:22px;line-height:1.15}
.roadmap p{font-size:15px}
.collaborate-top{display:grid;grid-template-columns:1fr 1fr;gap:9%;align-items:end}
.collaborate-top .intro{margin-bottom:3px}
.partner-choice-hint{margin:44px 0 16px;font-size:13px;color:#c9dbe9}
.partnerships{display:grid;grid-template-columns:.75fr 1.25fr;gap:10%;margin-top:0}
.partner-tabs{display:flex;flex-direction:column;gap:12px;align-self:start}
.partner-tabs button{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#07131ecc;border:1px solid #91cdf573;border-radius:4px;padding:17px 18px;min-height:64px;text-align:left;font-size:18px;line-height:1.4;color:#bce1fb}
.partner-tabs button[aria-selected=true]{color:#f1f8ff;background:#9bd6ff20;border-color:var(--blue);box-shadow:inset 3px 0 0 var(--blue);font-weight:600}
.partner-tabs button:hover,.partner-tabs button:focus-visible{background:#142b3b;border-color:var(--blue);color:#fff}
.partner-tabs button .tab-cue{display:flex;align-items:center;justify-content:center;flex:0 0 30px;width:30px;height:30px;border:1px solid #9bd6ff66;border-radius:50%;background:#9bd6ff14;color:var(--blue);font-size:19px;line-height:1;transition:transform .18s,background-color .18s}
.partner-tabs button[aria-selected=true] .tab-cue{background:var(--blue);color:#071724;transform:rotate(90deg)}
.partner-panel{padding-top:17px;min-height:470px}
.partner-panel .micro{color:#a6c7df;margin-bottom:24px}
.partner-panel h3{font-size:clamp(32px,3.2vw,49px);margin-bottom:28px}
.partner-panel ul{list-style:none;padding:0;margin:24px 0}
.partner-panel li{font-size:14px;color:#c3d5e2;border-top:1px solid var(--line);padding:11px 0}
.text-button{display:inline-flex;justify-content:space-between;gap:20px;align-items:center;max-width:100%;min-height:58px;background:#10283ad9;border:1px solid #9bd6ffa6;border-radius:4px;padding:14px 18px;font-size:14px;line-height:1.6;color:#c5e7ff;text-align:left}
.text-button>span:first-child{min-width:0;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.text-button>span:last-child{display:flex;align-items:center;justify-content:center;flex:0 0 30px;width:30px;height:30px;border:1px solid #9bd6ff80;border-radius:50%;background:#9bd6ff1a;font-size:20px;line-height:1}
.text-button:hover,.text-button:focus-visible{color:#fff;background:#173c55;border-color:#cae9ff}
.questions-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:12%;align-items:start}
.questions h2{font-size:clamp(37px,4.3vw,65px)}
.faq-sidebar{position:sticky;top:120px;min-width:0}
.faq-intro{font-size:16px;line-height:1.8;margin-top:27px}
.faq-index{display:flex;flex-direction:column;gap:0;margin-top:28px}
.faq-index a{display:flex;align-items:baseline;gap:16px;border-top:1px solid var(--line);padding:13px 0;font-size:13px;color:#cfdeea}
.faq-index a:last-child{border-bottom:1px solid var(--line)}
.faq-index a>span:first-child{color:var(--blue);font-size:10px;letter-spacing:.1em}
.faq-index a:hover{color:#fff}
.faqs{min-width:0}
.faq-group+.faq-group{margin-top:58px}
.faq-group h3{font-size:clamp(27px,2.6vw,38px);line-height:1.18;margin-bottom:23px}
.faqs details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none}
summary::-webkit-details-marker{display:none}
.faqs summary{display:flex;justify-content:space-between;gap:22px;padding:19px 0;font-size:17px}
.faqs summary>span:last-child,.sources summary>span:last-child{color:var(--blue);font-size:22px;line-height:1.3}
.faqs summary>span:last-child{flex-shrink:0}
.faqs details[open] summary>span:last-child{transform:rotate(45deg)}
.faqs p{font-size:15px;line-height:1.8;padding-top:5px}
.faqs p strong{color:var(--ink);font-weight:600}
.faqs p a{color:var(--blue);border-bottom:1px solid #7d9aae60;overflow-wrap:anywhere}
.faqs p a:hover{color:white}
.faqs .faq-source{font-size:12px;line-height:1.7;padding-top:0;margin-top:-9px;color:#b6c9d8}
.sources{border-top:1px solid var(--line);margin-top:70px;padding-top:22px;font-size:13px;color:#bfd0de}
.sources summary{display:flex;justify-content:space-between;gap:20px;text-transform:uppercase;font-size:10px;letter-spacing:.15em}
.sources p{margin-top:22px;max-width:770px;font-size:13px}
.sources ul{padding-left:18px;line-height:2.1}
.sources a{overflow-wrap:anywhere}
.sources a:hover{color:white}
.closing{padding-top:60px;padding-bottom:110px}
.closing .micro{color:var(--blue);margin-bottom:36px}
.closing h2{font-size:clamp(42px,6.2vw,95px);line-height:1.1;letter-spacing:-.045em}
.button{border:1px solid #aed4ee;background:#deeffb;color:#112638;display:inline-flex;align-items:center;justify-content:space-between;gap:40px;padding:15px 24px;font-size:13px;line-height:1.5}
.button:hover{background:#fff}
.closing .button{margin-top:42px}
.footer{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:35px;padding:30px var(--pad);background:#000;border-top:1px solid #ffffff16}
.footer p{margin:0;font-size:10px;color:#9db0bf;letter-spacing:.1em}
.footer-contact{min-width:0}
.footer-contact a{display:block;letter-spacing:0;font-size:12px;margin-top:7px;color:#d5e6f2;overflow-wrap:anywhere}
.contact-line{margin-top:32px}
.contact-line .micro{display:block;color:#cfdef0;margin-bottom:8px}
.contact-email{font-size:clamp(16px,2vw,23px);color:var(--blue);overflow-wrap:anywhere;border-bottom:1px solid #7d9aae60}
.contact-email:hover,.footer-contact a:hover{color:white}
.dialog-inner .contact-email{font-size:16px}
.footer-links{display:flex;gap:30px;align-items:center;font-size:11px;color:#b1c3d2}
.privacy-button{border:0;background:none;padding:12px 0;font-size:11px;color:inherit}
dialog{border:1px solid #647d91;background:#0c1823;color:var(--ink);padding:0;width:min(650px,calc(100vw - 32px));max-height:90vh;box-shadow:0 20px 90px #0009}
dialog::backdrop{background:#000b;backdrop-filter:blur(7px)}
.dialog-inner{position:relative;padding:42px}
.dialog-inner .micro{color:var(--blue);margin-bottom:20px}
.dialog-inner h2{font-size:44px;margin-bottom:26px}
.dialog-inner p{font-size:15px}
.dialog-close{position:absolute;right:18px;top:11px;border:0;background:none;font-size:28px;color:#c9deec;padding:4px 10px}
.dialog-inner label{display:block;font-size:12px;color:#d0e2ef;margin:21px 0 8px}
.dialog-inner select,.dialog-inner textarea{display:block;width:100%;background:#07101a;border:1px solid #698397;color:white;border-radius:0;padding:12px;font-size:14px;line-height:1.65}
.dialog-inner textarea{resize:vertical}
.dialog-inner .small{font-size:12px;color:#b1c4d2;margin-top:12px}
.dialog-actions{display:flex;gap:15px;flex-wrap:wrap;margin-top:23px}
.dialog-actions .outline{color:#d5e6f2;background:transparent}
@media(min-width:1600px){.intro-art img{width:min(175vw,2150px,200svh)}}
@media(max-width:1050px){.uses{grid-template-columns:1fr;gap:28px}.uses article{max-width:850px}.section{padding-top:75px;padding-bottom:75px}.mission-grid,.origin-grid,.moon-grid{gap:6%}.desktop-nav{gap:25px}.helium-intro{grid-template-columns:.68fr 1.32fr;gap:6%}.roadmap{gap:5%}.roadmap li{display:block}.step-index{display:block;margin-bottom:18px}.path-top{gap:7%}.partnerships{gap:8%}}
@media(max-width:760px){
  body{font-size:16px;line-height:1.75}
  html{scroll-padding-top:99px}
  .header{height:88px}
  .brand-logo{width:105px;height:80px}
  .brand-logo img{width:232px;left:-63px;top:-28px}
  .desktop-nav{display:none}
  .menu-toggle{display:block}
  .header-tools{gap:18px}
  .mobile-nav{top:88px}
  
  .intro-art img{width:min(190vw,200svh)}
  .intro-scroll{bottom:max(26px,env(safe-area-inset-bottom));font-size:8px;gap:13px;letter-spacing:.17em}
  .scroll-stem{height:32px}
  .section{padding:66px var(--pad)}
  .section-label{margin-bottom:42px;padding-top:15px}
  .section-label .micro{font-size:9px}
  .mission{padding-top:76px}
  .mission-grid,.origin-grid,.helium-intro,.moon-grid,.path-top,.collaborate-top,.questions-grid{grid-template-columns:1fr;gap:36px}
  h2,.mission h2{font-size:clamp(38px,8.8vw,61px)}
  .mission-copy{padding-top:0}
  .lead{font-size:23px}
  .origin-grid{gap:15px}
  .origin-emblem{max-width:420px;margin:0 auto}
  .origin-copy h2{font-size:clamp(37px,8.3vw,57px)}
  .helium-intro{gap:18px}
  
  
  
  
  .helium-intro h2,.moon h2,.path h2,.questions h2{font-size:clamp(37px,8.3vw,57px)}
  .uses{grid-template-columns:1fr;gap:30px;margin-top:38px}
  .uses h3{font-size:33px}
  .uses .micro{margin-bottom:18px}
  .science-note{grid-template-columns:1fr;gap:18px;margin-top:20px}
  .pull-quote{font-size:clamp(33px,8vw,49px);padding-left:22px;margin-top:43px}
  .roadmap{grid-template-columns:1fr;gap:20px;margin-top:35px}
  .roadmap li{display:flex;gap:23px;padding-top:23px}
  .roadmap .micro{margin-bottom:12px}
  .roadmap h3{font-size:29px;margin-bottom:17px}
  .partnerships{grid-template-columns:1fr;gap:21px;margin-top:35px}
  .partner-tabs{flex-direction:row;gap:12px;align-items:stretch}
  .partner-tabs button{justify-content:space-between;flex:1;font-size:15px;gap:10px;padding:14px;min-height:58px}
  .partner-tabs button .tab-cue{display:flex;flex-basis:26px;width:26px;height:26px;font-size:17px}
  .partner-panel{padding-top:10px;min-height:0}
  .partner-panel h3{font-size:37px}
  .questions-grid{gap:27px}
  .faq-sidebar{position:static}
  .faq-index{margin-bottom:16px}
  .faq-group+.faq-group{margin-top:42px}
  .faq-group h3{font-size:30px}
  .faqs summary{font-size:16px}
  .sources{margin-top:45px}
  .closing{padding-top:38px;padding-bottom:70px}
  .closing h2{font-size:clamp(38px,8.5vw,62px)}
  .footer{flex-wrap:wrap;padding:25px var(--pad);gap:18px}
  .footer-links{width:100%;justify-content:space-between;border-top:1px solid var(--line);padding-top:10px}
  .footer p{font-size:9px}
  .dialog-inner{padding:37px 25px 28px}
  .dialog-inner h2{font-size:35px}
  .dialog-actions{gap:12px}
  .button{padding:14px 18px;gap:24px}
}
@media(max-width:370px){.header-tools{gap:9px}.language{gap:3px}.mission h2{font-size:37px}.partner-tabs{gap:12px}.partner-tabs button{font-size:13px}.footer p{font-size:8px}.closing h2{font-size:35px}}
@media(max-height:480px){.intro-scroll{font-size:7px;bottom:15px;gap:8px}.scroll-stem{height:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}.intro-art img{will-change:auto;transform:none!important;opacity:1!important}.intro-scroll{opacity:1}}

/* Project progress and funding share the established editorial hierarchy. */
.project-foundation,.funding-focus{display:grid;grid-template-columns:1fr 1.15fr;gap:9%;border-top:1px solid var(--line);padding-top:34px;margin-top:60px}
.project-foundation .micro,.funding-focus .micro,.science-note .micro{color:#cfdef0;margin-bottom:22px}
.project-foundation h3,.funding-focus h3,.science-note h3{font-size:clamp(30px,3.05vw,44px);line-height:1.15;letter-spacing:-.035em;margin:0 0 22px}
.project-foundation p,.funding-focus p{max-width:62ch}
.funding-focus .text-button{width:fit-content;margin-top:24px}
@media(max-width:760px){.project-foundation,.funding-focus,.science-note{grid-template-columns:1fr;gap:16px;margin-top:38px;padding-top:27px}.project-foundation h3,.funding-focus h3,.science-note h3{font-size:33px}.project-foundation .micro,.funding-focus .micro,.science-note .micro{margin-bottom:18px}}

/* Clear science explanation and one combined support section. */
.spin-explainer{display:grid;grid-template-columns:1fr 1.15fr;gap:9%;margin-top:48px;padding-top:30px;border-top:1px solid var(--line)}
.spin-explainer p{font-size:16px;line-height:1.8}
.spin-explainer p:last-child{margin-bottom:0}
.support-purpose{display:grid;grid-template-columns:1fr 1fr;gap:9%;border-top:1px solid var(--line);margin-top:38px;padding-top:26px}
.support-purpose .micro{color:var(--blue)}
.support-next{max-width:850px;margin:36px 0 0;padding-top:24px;border-top:1px solid var(--line);font-size:15px}
@media(max-width:760px){.spin-explainer,.support-purpose{grid-template-columns:1fr;gap:22px}.partner-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.partner-tabs button{font-size:15px;min-width:0}.spin-explainer h3{font-size:33px}}


/* Self-hosted type keeps the identity consistent in both languages. */
@font-face{font-family:Inter;src:url('assets/fonts/Inter-0.woff2') format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('assets/fonts/Inter-1.woff2') format('woff2');font-style:normal;font-weight:600 900;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('assets/fonts/SpaceGrotesk-0.woff2') format('woff2');font-style:normal;font-weight:400;font-display:swap}
:root{font-family:Inter,Arial,sans-serif;font-optical-sizing:auto}
h1,h2,h3,.lead,.pull-quote,.atom-symbol,.isotope-property strong{font-family:'Space Grotesk',Inter,sans-serif}
h1,h2,h3{letter-spacing:-.045em}
strong{font-weight:600}
input:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
button,a,summary{touch-action:manipulation}
button,.button,.text-button,.evidence-link,.faq-index a{transition:color .18s,background-color .18s,border-color .18s}
.desktop-nav{gap:clamp(18px,2.4vw,38px)}
.desktop-nav a:last-child{color:inherit}
.desktop-nav a[href='#collaborate']{color:var(--blue)}
.desktop-nav a[aria-current]:after{right:0}
.mobile-nav a[aria-current]{color:var(--blue)}
.mobile-nav a[aria-current]:before{content:'-';margin-right:12px}
.reading-progress{position:absolute;inset:auto 0 -1px;height:2px;overflow:hidden;pointer-events:none}
.reading-progress span{display:block;height:100%;background:linear-gradient(90deg,#537c9b,var(--blue));transform:scaleX(0);transform-origin:left}
.motion-control{position:absolute;top:22px;right:var(--pad);z-index:3;font-size:10px;letter-spacing:.06em;color:#a3bccf;background:#03080cb3;border:1px solid #9bd6ff30;border-radius:2px;padding:10px 13px;min-height:40px;max-width:240px;text-align:left}
.motion-control:hover{color:#e7f4ff;border-color:#9bd6ff88}
.motion-control:disabled{opacity:.7}
.atom-controls{display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;max-width:430px;margin:0 auto 6px}
.atom-controls .micro{font-size:9px;letter-spacing:.13em;max-width:14ch;color:#c0d4e3}
.segmented{display:flex;padding:3px;background:#050b1266;border:1px solid #b6d8ef45;border-radius:4px;width:fit-content;gap:3px}
.segmented button{border:1px solid transparent;background:transparent;color:#c1d2df;padding:9px 17px;font-size:13px;min-height:44px;line-height:1.4;border-radius:2px}
.segmented button[aria-pressed=true]{background:#9bd6ff19;border-color:#9bd6ff72;color:#e0f3ff}
.segmented button:hover{background:#9bd6ff26}
.atom-controls button{font-size:20px;min-width:62px;font-family:'Space Grotesk',sans-serif}
.atom-legend{gap:6px;border-top:0;padding-top:0;margin-top:0}
.atom-legend button{background:transparent;border:1px solid #b9dfff33;border-radius:3px;padding:10px 5px;display:flex;align-items:center;flex-direction:column;gap:3px;width:100%;height:100%;color:#c9dbe8;font-size:12px;line-height:1.5}
.atom-legend button[aria-pressed=true]{border-color:#9bd6ffb3;background:#9bd6ff0d}
.atom-legend button:hover{background:#9bd6ff14}
.atom-legend strong{font-family:'Space Grotesk',sans-serif;font-size:25px}
.atom-symbol,.atom-nucleon,.atom-electron-label,.atom-label{font-family:Inter,Arial,sans-serif}
.atom-diagram [data-particle]{cursor:pointer}
.atom-diagram [data-particle] circle{transition:stroke-width .2s,filter .2s}
.atom-diagram .particle-selected circle{stroke-width:2;filter:drop-shadow(0 0 5px #a7dbff55)}
.atom-interaction{text-align:left}
.atom-help{font-size:11px;line-height:1.65;text-align:center;margin-bottom:15px;color:#bbcbd7}
.isotope-property{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-block:1px solid var(--line);font-size:12px;color:#c3d6e3}
.isotope-property strong{font-size:22px;color:var(--blue);font-weight:400}
.particle-detail{margin:18px 0;min-height:165px;text-align:left}
.particle-detail strong{display:block;color:#e1f0fb;font-size:13px;margin-bottom:9px}
.particle-detail p{font-size:13px;line-height:1.75;margin:0;color:#c4d4e0}
.atom-figure figcaption{font-size:11px;max-width:none;text-align:left;border-top:1px solid var(--line);padding-top:13px}
.helium-intro{align-items:start}
.helium-intro>div{padding-top:60px}
.evidence-link{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:15px;row-gap:7px;text-align:left;border:1px solid #9bd6ff73;border-radius:4px;background:#061522a6;padding:17px 18px;margin-top:24px;font-size:14px;line-height:1.6;color:#b9e1ff;max-width:620px}
.evidence-org{font-size:9px;letter-spacing:.14em;color:#a5d7fb;grid-column:1;text-transform:uppercase}
.evidence-link>span:nth-child(2){grid-column:1;grid-row:2;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;text-decoration-color:#9bd6ffb3}
.evidence-link .evidence-domain{grid-column:1;grid-row:3;color:#b3c9da;font-size:11px;letter-spacing:.025em;overflow-wrap:anywhere}
.evidence-link>span:last-child{grid-column:2;grid-row:1 / span 3;align-self:center;display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid #9bd6ff80;border-radius:50%;background:#9bd6ff14;font-size:21px;color:var(--blue);transition:transform .2s}
.evidence-link:hover,.evidence-link:focus-visible{color:#fff;border-color:var(--blue);background:#10283ad9}
.evidence-link:hover>span:last-child{transform:translate(2px,-2px)}
.evidence-context{font-size:11px;line-height:1.75;color:#becdd8;text-align:right;max-width:65ch;margin:28px 0 0 auto}
.evidence-row{display:grid;grid-template-columns:1fr 1fr;gap:6%;margin-top:9px}
.evidence-row .evidence-link{margin-top:20px;max-width:none}
.moon-grid .evidence-link+.evidence-link{margin-top:12px}
.spin-lab{border:1px solid #9bd6ff40;border-radius:6px;background:linear-gradient(120deg,#070e167a,#0c1b294d);padding:clamp(20px,3.5vw,44px);margin-top:38px;overflow:hidden}
.spin-lab-head{display:flex;justify-content:space-between;align-items:center;gap:25px}
.spin-lab-head .micro{color:#bcdff7;margin:0}
.spin-lab-head .segmented{flex-shrink:0}
.spin-stage{display:flex;align-items:center;gap:30px;max-width:820px;margin:30px auto}
.spin-grid{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:clamp(8px,2vw,22px);flex:1}
.spin-arrow{display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:clamp(25px,3.2vw,42px);line-height:1.4;transition:color .25s;transform:none;user-select:none}
.spin-arrow.is-down{transform:rotate(180deg);color:#e0e8ee}
.spin-axis{font-size:10px;color:#c2d3e0;width:64px;display:flex;flex-direction:column;align-items:center;text-align:center;border-left:1px solid var(--line);padding-left:20px;line-height:1.5}
.spin-axis>span:first-child{font-size:54px;line-height:1.6;font-weight:400}
.spin-state{font-size:17px;color:#e1f0fa;max-width:68ch;min-height:3.4em;margin-bottom:14px}
.spin-caption{font-size:12px;line-height:1.8;max-width:90ch;margin:0;color:#b7cbd9}
.path-hint{font-size:12px;color:#b8cbd9;margin:32px 0 0}
.roadmap{gap:28px;margin-top:25px}
.roadmap li{display:block;padding:0;border:0;min-width:0}
.milestone{height:100%;border-top:1px solid #b4d6eb70}
.milestone[open]{border-top-color:var(--blue)}
.milestone summary{position:relative;display:grid;grid-template-columns:24px 1fr;gap:12px;padding:24px 22px 18px 0;min-height:175px}
.milestone summary h3{font-size:clamp(24px,2.3vw,33px);margin:0;line-height:1.16}
.milestone summary .micro{font-size:9px;letter-spacing:.11em;margin-bottom:15px;min-height:30px}
.milestone-toggle{position:absolute;right:0;top:24px;color:var(--blue);font-size:24px;line-height:1;transition:transform .2s}
.milestone[open] .milestone-toggle{transform:rotate(45deg)}
.milestone-content{padding:12px 0 0 36px}
.milestone-content p{font-size:14px;line-height:1.8}
.milestone dl{border-top:1px solid var(--line);padding-top:18px;margin:24px 0 0}
.milestone dt{color:#c9e8fc;font-size:10px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.milestone dd{font-size:13px;line-height:1.75;color:#c3d3df;margin:0 0 20px}
.faq-search{margin-top:28px}
.faq-search label{display:block;color:#dbeaf4;font-size:12px;margin-bottom:10px}
.faq-search-field{display:flex;border:1px solid #b0d4ed72;border-radius:4px;background:#060e175c}
.faq-search input{display:block;background:transparent;color:#f2f7fa;border:0;width:100%;min-width:0;padding:14px 12px;font-size:13px;line-height:1.6;border-radius:4px;appearance:none}
.faq-search input::placeholder{color:#b0c3d2;opacity:1}
.faq-search button{border:0;border-left:1px solid #b0d4ed35;color:var(--blue);background:transparent;padding:0 12px;font-size:11px;min-height:48px}
.faq-search button:disabled{opacity:.45}
.faq-search p{color:#b5c9d8;font-size:11px;margin:9px 0 0;min-height:1.7em}
.faq-empty{border-block:1px solid var(--line);padding:24px 0;font-size:16px;color:#dceaf4}
.faqs summary>span:last-child{transition:transform .2s}
.faqs details[open]>p,.milestone[open] .milestone-content{animation:content-in .2s ease-out}
@keyframes content-in{from{opacity:.65}to{opacity:1}}
.faq-sidebar{max-height:calc(100svh - 135px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#68899f transparent;padding:0 7px 10px 0}
@media(max-width:1050px){
  .header{gap:20px}.header-tools{gap:16px}.desktop-nav{gap:18px;font-size:12px}
  .helium-intro{grid-template-columns:.9fr 1.1fr;gap:6%}
  .particle-detail{min-height:170px}
  .milestone summary{grid-template-columns:1fr;min-height:205px;padding-right:20px;gap:2px}
  .milestone summary .step-index{margin:0 0 12px}
  .milestone-content{padding-left:0}
}
@media(max-width:900px){
  .desktop-nav{display:none}.menu-toggle{display:block}
  .spin-lab-head{align-items:flex-start;flex-direction:column;gap:18px}
}
@media(max-width:760px){
  .helium-intro{grid-template-columns:1fr;gap:34px}
  .helium-intro>div{padding-top:0}
  .atom-figure{max-width:420px;width:100%;margin-inline:auto}
  .particle-detail{min-height:115px}
  .atom-figure figcaption{max-width:none}
  .evidence-context{text-align:left;margin-top:24px}
  .evidence-row{grid-template-columns:1fr;gap:0}
  .evidence-row .evidence-link+.evidence-link{margin-top:12px}
  .spin-lab{margin-top:28px}
  .spin-stage{gap:14px;margin:23px 0}
  .spin-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
  .spin-axis{width:48px;padding-left:12px;font-size:9px}
  .spin-axis>span:first-child{font-size:45px}
  .spin-state{font-size:15px;min-height:5.1em}
  .segmented button{padding:10px 13px;font-size:12px}
  .atom-controls button{font-size:20px}
  .roadmap li{display:block;padding:0}
  .milestone summary{grid-template-columns:24px 1fr;min-height:140px;gap:12px;padding:22px 25px 22px 0}
  .milestone summary .micro{min-height:0;margin-bottom:12px}
  .milestone summary h3{font-size:29px}
  .milestone-content{padding:0 0 8px 36px}
  .faq-sidebar{max-height:none;overflow:visible;padding:0}
  .motion-control{top:18px;right:22px;font-size:9px;max-width:190px}
}
@media(max-width:370px){
  .spin-lab{padding:18px 14px}.spin-lab .segmented button{padding:9px 11px}
  .milestone summary h3{font-size:27px}
}
html.motion-paused{scroll-behavior:auto}
.motion-paused *, .motion-paused *:before,.motion-paused *:after{animation:none!important;transition:none!important}
.motion-paused .intro-art img{transform:none!important;opacity:1!important;will-change:auto}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation:none!important;transition:none!important}
}

/* Each native disclosure has a single, semantic heading. */
.milestone summary{display:block}
.milestone summary>h3{display:grid;grid-template-columns:24px 1fr;gap:12px}
@media(min-width:761px) and (max-width:1050px){.milestone summary>h3{grid-template-columns:1fr;gap:2px}}

/* Scroll-driven Moon fade, with reduced-motion support. */
.has-scroll-intro .hero.brand-intro{height:150vh;height:150svh;min-height:480px}
.has-scroll-intro .intro-stage{position:sticky;top:0}
.has-scroll-intro.motion-paused .hero.brand-intro{height:100vh;height:100svh;min-height:320px}
.has-scroll-intro.motion-paused .intro-stage{position:relative}
@media(prefers-reduced-motion:reduce){
 .has-scroll-intro .hero.brand-intro{height:100vh;height:100svh;min-height:320px}
 .has-scroll-intro .intro-stage{position:relative}
}

/* One approved public illustration; its qualification stays visible below it. */
.rcm-showcase{margin-top:70px;padding-top:34px;border-top:1px solid var(--line)}
.rcm-intro{display:grid;grid-template-columns:1fr 1.15fr;gap:9%;align-items:start;margin-bottom:28px}
.rcm-intro .micro{color:#cfdef0;margin-bottom:22px}
.rcm-intro h3{font-size:clamp(30px,3.05vw,44px);line-height:1.15;letter-spacing:-.035em}
.rcm-intro>p{margin:0;max-width:62ch}
.rcm-figure{margin:0;min-width:0}
.rcm-figure img{width:100%;height:auto;border:1px solid #b5d8ee2b;background:#0a0f14}
.rcm-figure figcaption{display:flex;flex-direction:column;gap:7px;padding:19px 0 0;max-width:100%;font-size:13px;line-height:1.75;color:#c5d6e3}
.rcm-figure figcaption strong{font-weight:600;color:#dfeefa}
.rcm-figure figcaption>span{font-size:12px;color:#b5c6d3}
@media(max-width:760px){.rcm-showcase{margin-top:40px;padding-top:27px}.rcm-intro{grid-template-columns:1fr;gap:18px;margin-bottom:24px}.rcm-intro h3{font-size:33px}.rcm-intro .micro{margin-bottom:18px}.rcm-figure figcaption{font-size:12px;padding-top:15px}}

/* Source links remain recognisable without hover, including on touchscreens. */
a[href^="https://"]:not(.evidence-link),a[href^="http://"]:not(.evidence-link),a[href^="mailto:"]:not(.button){color:var(--blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;text-decoration-color:#9bd6ffb3}
a[href^="https://"]:not(.evidence-link):hover,a[href^="http://"]:not(.evidence-link):hover,a[href^="mailto:"]:not(.button):hover{color:#fff;text-decoration-thickness:2px}
.faq-source a{display:inline-block;padding:3px 2px}
@media(max-width:760px){.partner-tabs button:last-child{grid-column:1 / -1}}
@media(max-width:460px){.partner-tabs{grid-template-columns:1fr}.partner-tabs button{font-size:16px;padding:14px 16px}.partner-choice-hint{margin-top:30px}}

/* Large editorial application images, with the full composition preserved. */
.application-gallery-intro{margin-top:68px;border-top:1px solid var(--line);padding-top:30px}
.application-gallery-intro .micro{color:var(--blue);margin-bottom:12px}
.application-gallery-intro>p:last-child{font-size:13px;max-width:74ch;margin-bottom:0}
.uses.application-gallery{grid-template-columns:1fr;gap:54px;margin-top:30px}
.uses .application-story{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:6%;align-items:center;max-width:none;padding-top:36px}
.uses .application-story:first-child{border-top:0;padding-top:0}
.application-figure{margin:0;min-width:0}
.application-image-link{display:block;position:relative;border:1px solid #c6e8ff45;background:#050b12;overflow:hidden}
.application-image-link img{width:100%;height:auto}
.image-expand{position:absolute;right:14px;bottom:14px;display:flex;gap:12px;align-items:center;padding:9px 13px;background:#07121aeb;border:1px solid #c6e8ff6b;color:#eaf6ff;font-size:12px;line-height:1.4;min-height:42px}
.image-expand>span:first-child{text-decoration:underline;text-underline-offset:3px}
.image-expand>span:last-child{font-size:23px;line-height:1}
.application-image-link:hover .image-expand,.application-image-link:focus-visible .image-expand{background:#173a50;border-color:var(--blue)}
.application-figure figcaption{display:flex;flex-direction:column;gap:10px;padding-top:18px;color:#cad9e3;font-size:13px;line-height:1.65}
.application-state{align-self:flex-start;padding:5px 9px;border:1px solid #9bd6ff52;color:#c9e9ff;background:#0a263a99;font-size:9px;letter-spacing:.11em;line-height:1.5}
.application-state.future-state{border-style:dashed;background:#16223088}
.application-copy{min-width:0}
.uses .application-copy .micro{margin-bottom:18px}
.uses .application-copy h3{font-size:clamp(30px,3.05vw,44px);line-height:1.15}
.application-copy .evidence-link{max-width:none}
.application-gallery+.science-note{margin-top:64px}
.application-dialog{width:min(1440px,calc(100vw - 32px));max-height:94vh;max-height:94dvh;overflow:auto;background:#07101a}
.application-dialog-head{position:sticky;top:0;z-index:1;min-height:64px;display:flex;align-items:center;padding:16px 68px 16px 24px;background:#07101af5;border-bottom:1px solid var(--line)}
.application-dialog-head h2{font-size:19px;letter-spacing:-.02em;line-height:1.3}
.application-dialog .dialog-close{top:8px;right:12px;width:46px;height:46px}
.application-dialog figure{margin:0}
.application-dialog figure>img{width:100%;height:auto;max-height:68vh;max-height:68dvh;object-fit:contain;background:#02070c}
.application-dialog figcaption{padding:19px 24px 8px;color:#e4eff6;font-size:14px;line-height:1.65}
.application-dialog-note{font-size:12px;margin:0;padding:0 24px 22px;color:#adbfcc}
@media(max-width:900px){
  .uses .application-story{grid-template-columns:1fr;gap:26px}
  .application-copy{max-width:72ch}
  .uses .application-copy h3{font-size:33px}
  .application-gallery-intro{margin-top:46px}
  .uses.application-gallery{gap:35px}
  .application-gallery+.science-note{margin-top:42px}
}
@media(max-width:460px){
  .image-expand{right:10px;bottom:10px;padding:7px 10px;font-size:11px}
  .application-dialog{width:calc(100vw - 16px)}
  .application-dialog-head{padding-left:16px}
  .application-dialog-head h2{font-size:17px}
  .application-dialog figcaption{padding-left:16px;padding-right:16px}
  .application-dialog-note{padding-left:16px;padding-right:16px}
}

/* Public overview downloads and company details. */
.public-overview{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.8fr);gap:36px;align-items:center;margin-top:42px;padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.public-overview .micro{margin:0 0 16px;color:var(--blue)}
.public-overview h3{font-size:clamp(28px,2.8vw,40px)}
.public-overview p:last-child{max-width:650px;margin:18px 0 0;font-size:15px;line-height:1.75}
.overview-downloads{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.overview-download{display:flex;flex-direction:column;gap:9px;padding:20px 16px;border:1px solid #9bd6ff94;border-radius:4px;background:#10283aa6;color:#d8edff;min-width:0;transition:background-color .18s,border-color .18s}
.overview-download:hover,.overview-download:focus-visible{background:#173c55;border-color:#cae9ff;color:#fff}
.download-language{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:19px;font-weight:600}
.download-language>span{font-size:24px;color:var(--blue)}
.download-details{font-size:12px;color:#c5cdd5}
.download-action{font-size:13px;text-decoration:underline;text-underline-offset:4px}
.footer{display:grid;grid-template-columns:130px minmax(0,1fr) auto;gap:32px;align-items:start;padding-top:36px;padding-bottom:36px}
.footer-details{min-width:0;max-width:620px}
.footer .footer-contact{font-size:12px;letter-spacing:.02em;color:#d5e6f2}
.footer .company-registration{margin-top:16px;font-size:12px;letter-spacing:0;line-height:1.75;color:#b1c3d2}
.company-registration a,.footer-contact a{text-decoration:underline;text-underline-offset:3px}
.company-registration a:hover{color:#fff}
.footer address{margin-top:8px;font-size:12px;font-style:normal;line-height:1.75;color:#b1c3d2}
.footer-links{gap:20px;white-space:nowrap}
.footer .privacy-button,.footer-links>a{font-size:12px}
@media(max-width:900px){.public-overview{grid-template-columns:1fr;gap:24px}.overview-downloads{max-width:480px}.footer{grid-template-columns:110px minmax(0,1fr)}.footer-links{grid-column:1/-1;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px}}
@media(max-width:480px){.footer{grid-template-columns:1fr;gap:20px}.footer-links{grid-column:1}.overview-download{padding:16px 12px}.download-language{font-size:17px}.download-action{font-size:12px}}