:root{--bg:#090f1c;--panel:#111c2c;--line:#2d3c50;--text:#f3f6fc;--muted:#adbbcf;--lime:#d5fc75;--cyan:#7ddedb}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 85% 10%,#18333866,transparent 45%),var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.6}button,input,a{touch-action:manipulation}button,a,input,summary{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--cyan)}button{font:inherit;cursor:pointer;border-radius:8px;min-height:48px;padding:11px 18px;font-weight:700}button:disabled{opacity:.45;cursor:not-allowed}button:hover:not(:disabled){filter:brightness(1.12)}a{color:var(--lime)}header{max-width:1200px;margin:auto;display:flex;align-items:center;gap:24px;padding:26px 32px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;color:var(--text);text-decoration:none;font-size:10px;letter-spacing:1.5px;line-height:1.5}.brand strong{font-size:12px}.brandmark{background:var(--lime);color:var(--bg);width:42px;height:44px;font-size:26px;font-weight:900;display:grid;place-content:center;position:relative;transform:rotate(-5deg)}.brandmark span{position:absolute;font-size:18px;right:1px;top:-1px}.connection{margin-left:auto;font-size:10px;letter-spacing:1.6px;color:var(--cyan)}i{display:inline-block;background:var(--cyan);width:6px;height:6px;border-radius:50%;margin-right:7px}.quiet{background:transparent;border:1px solid var(--line);color:var(--muted);font-size:13px}.primary{background:var(--lime);border:1px solid var(--lime);color:#15200c;display:inline-flex;gap:25px;align-items:center;justify-content:center}.secondary{background:#1b2b3d;border:1px solid #41566c;color:var(--text)}main{max-width:1100px;margin:auto;padding:38px 32px}.eyebrow,.tag,.number{font-size:11px;font-weight:750;letter-spacing:2px}.eyebrow{color:var(--muted)}.eyebrow span{color:var(--lime);margin:0 12px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:35px;align-items:center;padding:35px 0 45px}.tag{color:var(--lime)}h1{font-size:clamp(46px,6vw,76px);line-height:1.06;letter-spacing:-3px;margin:20px 0 24px;font-weight:850}h1 em{font-style:normal;color:var(--lime)}.intro{color:var(--muted);font-size:17px;max-width:520px}.meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.meta span{font-size:11px;border:1px solid var(--line);padding:5px 11px;border-radius:30px;color:#c3cddd}.radar{width:300px;aspect-ratio:1;position:relative;margin:auto;background:repeating-linear-gradient(0deg,transparent 0 29px,#7ddedb08 30px),repeating-linear-gradient(90deg,transparent 0 29px,#7ddedb08 30px);border-radius:50%;border:1px solid #7ddedb20;box-shadow:0 0 70px #7ddedb08}.orbit{position:absolute;border:1px solid #7ddedb30;border-radius:50%;inset:15%}.o2{inset:30%}.o3{inset:2%;border-style:dashed}.cross{position:absolute;inset:0;background:linear-gradient(transparent 49.8%,#7ddedb30 50%,transparent 50.3%),linear-gradient(90deg,transparent 49.8%,#7ddedb30 50%,transparent 50.3%)}.radar-core{position:absolute;inset:32%;display:grid;place-content:center;text-align:center;font-size:60px;font-weight:200;color:var(--lime);background:#182b2c;border:1px solid #d5fc7566;border-radius:50%;line-height:1}.radar-core small{font-size:7px;letter-spacing:1px;margin-top:10px}.blip{position:absolute;background:var(--lime);width:8px;height:8px;box-shadow:0 0 18px var(--lime);border-radius:50%}.b1{left:20%;top:25%}.b2{right:17%;top:45%}.b3{bottom:14%;left:40%}.coordinate{position:absolute;bottom:-27px;font-size:8px;letter-spacing:2px;left:40px;color:var(--cyan)}.progress{padding:0;margin:0 0 28px;list-style:none;display:flex;border-block:1px solid var(--line)}.progress li{flex:1;padding:17px 10px;font-size:12px;color:var(--muted)}.progress b{display:inline-grid;place-content:center;width:25px;height:25px;border:1px solid var(--line);border-radius:50%;margin-right:10px;font-size:10px}.progress [aria-current]{color:var(--lime);border-bottom:2px solid var(--lime)}.progress [aria-current] b,.progress .done b{background:var(--lime);color:var(--bg)}.panel{background:linear-gradient(130deg,#162334,#101a29);border:1px solid var(--line);border-radius:16px;padding:32px;margin-bottom:30px;box-shadow:0 20px 50px #0002}.section-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.pill{font-size:9px;letter-spacing:1px;background:#d5fc7510;border:1px solid #d5fc7540;color:var(--lime);border-radius:4px;padding:4px 8px;white-space:nowrap}h2{font-size:clamp(25px,3vw,32px);line-height:1.2;letter-spacing:-.8px;margin:20px 0 14px}h3{font-size:18px;line-height:1.4}p{color:#bdc9da}strong{color:inherit}.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;border-block:1px solid var(--line);margin:25px 0;padding:24px 0}.number{color:var(--cyan);font-size:10px}.setup-grid h3{margin:10px 0}.setup-grid p{font-size:14px;margin-bottom:0}.small{font-size:12px;color:var(--muted)}.check{display:flex;align-items:flex-start;gap:12px;margin:28px 0 20px;font-size:14px;cursor:pointer}.check input{width:23px;height:23px;flex-shrink:0;accent-color:var(--lime)}footer{display:flex;gap:18px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:10px;letter-spacing:1px}footer button{margin-left:auto}footer>span:last-child{width:100%;font-size:10px;letter-spacing:0;color:#899ab2}.audio-box{display:flex;align-items:center;gap:15px;background:#080f1a;padding:18px;border:1px solid var(--line);border-radius:10px;margin-top:25px;flex-wrap:wrap}.audio-box p{font-size:11px;margin:0}.audio-icon{color:var(--lime);font-size:25px}.audio-icon span{font-size:17px;letter-spacing:2px}.audio-box .secondary{margin-left:auto;font-size:13px}.transcript{border-left:2px solid var(--cyan);padding:15px 22px;margin:24px 0;background:#7ddedb05}.transcript p{margin-bottom:0;line-height:1.8}.order{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.order span{font-size:12px;border:1px solid #586b80;padding:9px 16px;border-radius:6px;color:var(--cyan)}form label{display:block;font-weight:650;margin-bottom:10px}.code-row{display:flex;gap:12px}.code-row input{width:160px;min-width:0;background:#090f1c;color:var(--text);font:700 30px ui-monospace,monospace;letter-spacing:10px;border:1px solid #6e819a;border-radius:8px;padding:10px 16px}.code-row input[aria-invalid]{border-color:#ffb9a8}#code-result{color:#ffb9a8;font-weight:600}details{border-top:1px solid var(--line);padding:15px 0}summary{cursor:pointer;color:var(--cyan);min-height:30px}.success-banner{border:1px solid #d5fc7570;background:#d5fc7510;border-radius:10px;display:flex;align-items:center;gap:20px;padding:25px}.success-banner>span{font-size:50px;color:var(--lime)}.success-banner strong{color:var(--lime)}.success-banner p{margin:5px 0}dialog{background:#111c2c;color:var(--text);border:1px solid #52647a;border-radius:15px;max-width:720px;width:calc(100% - 24px);max-height:90dvh;padding:28px}dialog::backdrop{background:#02060cdd}.dialog-top{display:flex;gap:15px;align-items:center;justify-content:space-between}.cards{display:flex;gap:12px;margin:20px 0}.cards>div{flex:1;border:2px dashed #697a90;padding:16px;text-align:center;font-weight:750;font-size:12px}.cards strong{display:block;font-size:40px;color:var(--lime)}.skip{position:absolute;left:15px;top:-80px;background:var(--bg);padding:15px;z-index:10}.skip:focus{top:10px}[hidden]{display:none!important}@media(max-width:650px){header{padding:18px 20px;gap:10px}.connection{display:none}header .quiet{margin-left:auto}.brand strong{font-size:10px}main{padding:26px 20px}.hero{grid-template-columns:1fr;padding:20px 0 30px;gap:20px}h1{font-size:54px}.hero .radar{width:190px;margin-top:5px;margin-bottom:20px}.radar-core{font-size:42px}.radar-core small{font-size:5px}.coordinate{left:9px;font-size:6px}.intro{font-size:15px}.desktop{display:none}.progress li{padding:14px 4px;font-size:10px;line-height:1.5}.progress b{display:block;margin:0 0 7px}.panel{padding:22px 18px}.section-top{align-items:flex-start}.section-top .eyebrow{font-size:9px;letter-spacing:1px}.setup-grid{grid-template-columns:1fr;gap:25px}.audio-box{padding:14px;gap:10px}.audio-box .secondary{margin-left:0;width:100%}.audio-box .quiet{width:100%}.transcript{padding:14px 16px}.code-row{flex-wrap:wrap}.code-row input{width:100%}.code-row button{width:100%}.order{gap:6px}.order span{padding:8px;font-size:11px}.primary{width:100%;gap:12px}.check{font-size:13px}.dialog-top{align-items:flex-start}.dialog-top .eyebrow{font-size:9px}dialog{padding:20px}footer button{margin-left:0}.success-banner{padding:15px;gap:12px}.success-banner strong{font-size:13px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* v0.2 mission interactions */
.progress{flex-wrap:wrap}.progress li{min-width:90px}.passport h2{font-size:20px;margin:0}.passport{padding:22px 28px}.passport ol{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:18px 0 0;padding:0}.passport li{border:1px solid var(--line);border-radius:8px;padding:12px;text-align:center;min-width:0}.passport li span{display:block;font-size:10px;color:var(--muted)}.passport li strong{display:block;font:750 30px ui-monospace,monospace}.passport .unlocked{border-color:#d5fc7570;background:#d5fc7509;color:var(--lime)}.locked strong{color:#7890a5}.feedback{color:#ffd1a6;font-weight:650;min-height:1.5em}.route-grid{display:grid;grid-template-columns:repeat(var(--cols),1fr);gap:8px;max-width:350px;margin:25px auto}.route-cell{aspect-ratio:1;display:grid;place-content:center;border:1px solid #62758b;border-radius:7px;background:#1e3345;color:#d4e7ef;font-size:12px}.route-cell.blocked{background:repeating-linear-gradient(45deg,#111b2a,#111b2a 5px,#1c2737 5px,#1c2737 7px);color:#d1a7a0;font-size:25px}.route-cell.current{background:var(--lime);color:#111c19;font-size:26px;border:2px solid #fff}.route-position{font-size:13px;text-align:center;color:var(--cyan)}.direction-controls{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;max-width:400px;margin:20px auto}.echo-box{padding:22px;background:#090f1c;border:1px solid var(--line);border-radius:10px;margin:22px 0}.sequence-display{padding:20px 12px;font-size:17px;font-weight:750;line-height:2;border:1px solid #42556a;border-radius:8px;color:var(--cyan);overflow-wrap:anywhere}.symbol-keys,.energy-modules{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0}.echo-box>.primary{display:flex;margin-top:20px}.energy-modules button{min-height:85px;font-size:18px}.energy-modules button[aria-pressed=true]{background:var(--lime);border-color:var(--lime);color:#101c13}.energy-sum{font-size:20px;font-weight:700;color:var(--cyan)}.physical-note{padding:18px;border-left:3px solid var(--cyan);background:#7ddedb0a}.parent-steps{padding-left:20px}.parent-steps li{margin:15px 0;color:#bdc9da}#checkpoint>.primary{margin-top:25px}body:has(#play:not([hidden])) .hero{padding:20px 0;grid-template-columns:1fr auto}body:has(#play:not([hidden])) .hero h1{font-size:36px;margin:8px 0;letter-spacing:-1px}body:has(#play:not([hidden])) .hero .intro,body:has(#play:not([hidden])) .hero .meta,body:has(#play:not([hidden])) .hero .tag{display:none}body:has(#play:not([hidden])) .hero .radar{width:110px;margin:0}body:has(#play:not([hidden])) .radar-core{font-size:28px}body:has(#play:not([hidden])) .radar-core small{font-size:4px;letter-spacing:0;margin-top:3px}body:has(#play:not([hidden])) .coordinate{display:none}@media(max-width:650px){.progress li{min-width:30%;flex:1 0 30%}.passport{padding:20px 16px}.passport ol{gap:5px}.passport li{padding:8px 2px}.passport li span{font-size:8px}.passport li strong{font-size:26px}.passport .section-top{align-items:center;flex-wrap:wrap}.echo-box{padding:16px}.symbol-keys{gap:8px}.symbol-keys button{font-size:12px;padding:11px 5px}.energy-modules button{font-size:14px}.sequence-display{font-size:14px}.direction-controls{gap:8px}.route-grid{gap:6px}body:has(#play:not([hidden])) .hero h1{font-size:30px}body:has(#play:not([hidden])) .hero .radar{width:95px}body:has(#play:not([hidden])) .hero{gap:15px}#reset-cancel{margin-top:12px}.echo-box>.quiet{margin:5px 0}}
/* Keep the five-digit finale code and fragment names fully readable. */
.code-row input{width:230px;max-width:100%}@media(max-width:650px){.code-row input{width:100%}.passport ol{grid-template-columns:repeat(3,1fr);gap:8px}.passport li{padding:10px 5px}.passport li span{font-size:11px}}

/* v0.3 · quicker mobile launch, visibly saved progress, optional surprise finale */
.material-short{border-left:3px solid var(--lime);padding:11px 16px;background:#d5fc750a;font-size:14px;line-height:1.6}
.start-panel h2{margin:11px 0}.start-panel>.small{margin:11px 0}.start-panel .check{margin:14px 0}.start-button{width:100%;max-width:620px;font-size:16px;padding:14px 20px}
.setup-details{margin:16px 0;border-block:1px solid var(--line);padding:8px 0}.setup-details summary{font-size:14px;font-weight:700;color:var(--cyan)}.setup-details .setup-grid{margin:9px 0;padding:8px 0}
.storage-status{border-radius:6px;padding:8px 12px;background:#7ddedb0a;color:var(--cyan);margin:6px 0}.final-reward{font-weight:800;font-size:clamp(18px,3vw,26px);color:var(--lime);border:1px dashed var(--lime);border-radius:8px;background:#d5fc7510;padding:24px;margin:20px 0}
.bonus-label{display:block;font-weight:700;margin:16px 0 8px}#treasure-location{background:#0a1422;border:1px solid #53687c;border-radius:7px;color:var(--text);font:inherit;padding:14px;min-height:48px;max-width:100%;width:100%}
#parents-content[hidden]{display:none}#parent-gate{background:#d5fc750a;border:1px solid #d5fc7540;padding:15px;border-radius:8px;margin:12px 0 20px}
body:not(:has(#play:not([hidden]))) .progress{display:none}
body:has(#play:not([hidden])) .progress{display:none}
#play{scroll-margin-top:12px}#checkpoint,#success{scroll-margin-top:16px}
@media(max-width:650px){header{padding:11px 16px}main{padding:10px 16px}.hero{display:grid;grid-template-columns:minmax(0,1fr) 82px;padding:8px 0 15px;gap:9px;align-items:center}.hero h1{font-size:35px;line-height:1.1;letter-spacing:-1.7px;margin:7px 0}.hero .intro{font-size:12px;line-height:1.4;margin:7px 0}.hero .radar{width:78px;margin:0}.radar-core{font-size:22px}.radar-core small{font-size:3px;letter-spacing:0;margin-top:2px}.coordinate{display:none}.hero .tag{font-size:9px;letter-spacing:1px}.hero .meta{font-size:10px;gap:5px}.hero .meta span{font-size:10px}.eyebrow{font-size:9px}.panel{padding:16px 14px;margin-bottom:16px}.start-panel h2{font-size:23px}.start-panel>p{margin:7px 0;font-size:13px}.material-short{font-size:12px!important;padding:8px 10px}body:has(#play:not([hidden])) .hero{display:none}body:has(#play:not([hidden])) #play{padding:14px 12px}body:has(#play:not([hidden])) .passport{margin-top:16px}.audio-box{margin-top:12px}.audio-box .quiet{width:100%}}

/* Make the activation button visible sooner on smaller phones. */
@media(max-width:650px){body:not(:has(#play:not([hidden]))) .hero h1{font-size:30px;line-height:1.07;margin:5px 0}body:not(:has(#play:not([hidden]))) .hero .radar{width:67px}body:not(:has(#play:not([hidden]))) .hero{grid-template-columns:minmax(0,1fr) 69px}body:not(:has(#play:not([hidden]))) .hero .intro{display:none}body:not(:has(#play:not([hidden]))) .hero .tag{display:none}body:not(:has(#play:not([hidden]))) .hero .meta{margin:7px 0}body:not(:has(#play:not([hidden]))) .hero .meta span{padding:2px 7px;font-size:9px}.start-panel>p:first-of-type{font-size:12px}.start-panel .small{font-size:11px}.start-panel .material-short{font-size:11px!important}}
/* Programmatic heading focus remains visible but avoids a distracting full white rectangle. */
#scene-title:focus{outline:2px solid #7ddedb44;outline-offset:5px;border-radius:3px}