:root{color-scheme:dark;--bg:#061320;--panel:#0d2236;--panel2:#102c43;--line:#29465b;--white:#edf8ff;--muted:#adc9d7;--cyan:#69f4df;--gold:#ffd27f;--purple:#a9a1ff;--radius:20px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-width:310px;background:radial-gradient(ellipse at 8% -18%,#133d56 0,transparent 39%),radial-gradient(ellipse at 102% 20%,#102956 0,transparent 36%),#061320;color:var(--white);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.45}
button,select,textarea{font:inherit}
a{color:#aaf7e6}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.6}
button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid #ffe49e;outline-offset:3px}
.visually-hidden,.skip:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.skip:focus{z-index:300;top:8px;left:8px;padding:10px;background:#fff;color:#08182b}
.sitebar{max-width:1560px;margin:auto;padding:11px clamp(14px,3vw,32px);display:flex;justify-content:space-between;gap:14px;align-items:center;border-bottom:1px solid #30526b55}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--white)}
.brand img{border-radius:50%;box-shadow:0 0 24px #64dff066}
.brand strong{display:block;font-size:17px;letter-spacing:-.025em}
.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:.16em;font-weight:800}
.site-actions{display:flex;align-items:center;gap:16px}
.site-actions .return{font-size:13px;text-decoration:none;font-weight:700}
.site-actions select{background:#122f46;border:1px solid #3c6177;border-radius:10px;padding:9px 11px;color:var(--white);min-height:42px}
.page-shell{max-width:1560px;margin:auto;padding:0 clamp(13px,2.7vw,32px) 24px}
.intro{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:22px 0 20px}
.intro-copy{max-width:850px}
.eyebrow,.panel-kicker,.stat-kicker,.mission-label{font-size:10px;font-weight:850;letter-spacing:.15em;color:var(--cyan)}
.eyebrow{margin:0 0 7px}
h1{font-size:clamp(24px,2.65vw,39px);line-height:1.09;letter-spacing:-.04em;margin:0 0 8px}
h1 em{font-style:normal;background:linear-gradient(90deg,#63f1df,#afc3ff);background-clip:text;-webkit-background-clip:text;color:transparent}
.intro-copy>p:last-child{color:var(--muted);font-size:clamp(12px,1.03vw,15px);margin:0;max-width:770px}
.speed-stat{display:flex;align-items:flex-start;gap:12px;padding:15px 17px;border:1px solid #3f6679;border-radius:17px;background:linear-gradient(125deg,#12364b,#102237);flex-shrink:0;box-shadow:0 16px 40px #0003}
.speed-stat>div{display:flex;flex-direction:column;gap:3px}
.speed-stat strong{font-size:clamp(18px,1.7vw,27px);letter-spacing:-.035em;font-variant-numeric:tabular-nums}
.speed-stat strong small{font-size:13px;color:var(--muted)}
.speed-stat #speedNote{color:var(--muted);font-size:11px}
.pulse-point,.live-indicator>span{display:block;width:9px;height:9px;background:var(--cyan);border-radius:100%;box-shadow:0 0 16px #62f5e2;flex-shrink:0}
.pulse-point{margin-top:8px}
.mode-strip{display:flex;gap:7px;overflow:auto;padding:0 1px 14px;scrollbar-width:thin;scrollbar-color:#456780 transparent}
.mode-strip button{min-width:max-content;display:flex;align-items:center;gap:9px;border:1px solid #35516a;background:#0d2337;color:#bdd9e5;padding:11px 14px;border-radius:14px;font-size:12px;transition:transform .15s,border-color .15s,background .15s}
.mode-strip button>span{font-size:17px}
.mode-strip button[aria-pressed=true]{background:#20515e;border-color:var(--cyan);color:#f6fffc;box-shadow:inset 0 0 0 1px #3f948e88,0 6px 20px #0b304055}
.mode-strip button:hover{transform:translateY(-1px)}
.experiment{display:grid;grid-template-columns:minmax(0,1.47fr) minmax(325px,.83fr);gap:14px;align-items:stretch}
.visual-card,.control-card{border:1px solid #36546b;border-radius:var(--radius);overflow:hidden;box-shadow:0 22px 65px #02091255;background:linear-gradient(165deg,#10263c,#071829)}
.visual-card{display:flex;flex-direction:column;min-width:0}
.visual-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;min-height:72px}
.visual-top>div{display:flex;flex-direction:column;gap:4px}
.visual-top strong{font-size:clamp(13px,1.15vw,17px)}
.live-indicator{display:flex;align-items:center;gap:7px;font-size:9px;font-weight:850;letter-spacing:.14em;color:#8cddd1}
.live-indicator>span{width:6px;height:6px}
.schematic{font-size:9px;text-align:right;font-weight:850;letter-spacing:.1em;color:#bfd1e4;background:#233b54;padding:7px 10px;border-radius:100px}
.canvas-box{position:relative;width:100%;aspect-ratio:960/520;min-height:310px;background:#07172b}
.canvas-box canvas{display:block;width:100%;height:100%;touch-action:pan-y}
.canvas-fade{position:absolute;bottom:0;left:0;right:0;height:24px;background:linear-gradient(transparent,#08182a);pointer-events:none}
.visual-bottom{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:12px 18px;background:#0c2032;min-height:55px}
.visual-bottom #visualCaption{color:#d0e2ed;font-size:12px}
#modelStamp{font-size:9px;white-space:nowrap;color:#8eafc6;font-weight:800;letter-spacing:.1em}
.control-card{padding:17px;display:flex;flex-direction:column;gap:13px;background:linear-gradient(165deg,#152d44,#0b2135)}
.control-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.control-heading h2{margin:4px 0 0;font-size:clamp(20px,1.7vw,27px);line-height:1.1;letter-spacing:-.03em}
.speak-btn{background:#133c4a;color:#e4fef9;border:1px solid #44737e;border-radius:999px;padding:9px 14px;display:flex;gap:6px;align-items:center;min-height:40px;font-size:11px;font-weight:750;white-space:nowrap}
.speak-btn[aria-pressed=true]{background:#286b64}
.mode-description{font-size:13px;line-height:1.45;color:#c4d8e6;margin:0;min-height:34px}
.sub-mode{display:flex;gap:7px;background:#0a2235;border:1px solid #2c4a5e;border-radius:12px;padding:5px;flex-wrap:wrap}
.sub-mode[hidden]{display:none}
.sub-mode button{flex:1;background:transparent;color:#bdd9e7;padding:7px 8px;border:0;border-radius:9px;font-size:11px;font-weight:780;min-width:60px}
.sub-mode button[aria-pressed=true]{background:#28616b;color:white}
.control-fields{display:grid;grid-template-columns:1fr;gap:11px}
.control-field{min-width:0}
.control-field label{display:flex;gap:8px;justify-content:space-between;align-items:baseline;font-size:12px;font-weight:710;color:#d3e7ee;margin-bottom:7px}
.control-field output{font-weight:820;color:#8affed;white-space:nowrap;font-variant-numeric:tabular-nums}
.control-field input[type=range]{width:100%;height:20px;accent-color:#67f0dc;cursor:ew-resize}
.control-field select{width:100%;min-height:41px;color:#eff9ff;background:#0d2b44;border:1px solid #42657c;padding:8px 10px;border-radius:10px}
.range-limits{display:flex;justify-content:space-between;font-size:10px;color:#90b0bf;margin-top:-2px}
.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.metric{padding:11px 12px;border:1px solid #35566a;border-radius:12px;background:#0b263b;min-width:0}
.metric span{display:block;font-size:10px;color:#9fbdce;line-height:1.2}
.metric strong{display:block;margin-top:5px;font-size:clamp(15px,1.5vw,21px);line-height:1.12;color:#fff7db;letter-spacing:-.03em;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.discovery{border-left:3px solid var(--cyan);padding:10px 12px;background:#0f343d;border-radius:3px 12px 12px 3px}
.discovery>span{color:#8bf4dd;font-size:10px;font-weight:850;letter-spacing:.1em}
.discovery p{margin:5px 0 0;color:#e0f1eb;font-size:12px;line-height:1.45}
.mission{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px;background:linear-gradient(120deg,#2e2b4a,#1c2e46);border:1px solid #62577a;border-radius:13px}
.mission p{font-size:12px;color:#e4def8;margin:5px 0 0;line-height:1.35}
.mission-label{color:#f4c685}
.mission button{min-width:108px;flex-shrink:0;color:#0c2032;background:#ffc978;border:0;border-radius:10px;padding:10px 11px;font-size:11px;font-weight:850;max-width:155px}
.control-bottom{display:flex;gap:9px;justify-content:space-between}
.secondary{font-size:11px;border-radius:10px;padding:9px 12px;min-height:41px;border:1px solid #45677a;background:#123249;color:#d8f3fa;font-weight:730}
.secondary:hover{background:#1f4860}
.teaching-notes{display:flex;gap:13px;flex-wrap:wrap;margin-top:14px}
.teaching-notes details{flex:1 1 360px;background:#0d2639;border:1px solid #2d4d62;padding:11px 15px;border-radius:13px;color:#cae0ea;font-size:12px}
.teaching-notes summary{cursor:pointer;font-weight:800;color:#d6f8f3}
.teaching-notes details p{line-height:1.7}
.source-links{display:flex;gap:14px;flex-wrap:wrap}
.source-links a{font-size:12px}
footer{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;padding:20px 1px;color:#9db8c9;font-size:12px}
footer a{text-decoration:none;font-weight:800}
.toast{position:fixed;z-index:500;bottom:20px;left:50%;transform:translateX(-50%);background:#224c53;color:white;border:1px solid #7de8d3;border-radius:12px;padding:12px 17px;box-shadow:0 10px 45px #0009;max-width:min(90vw,500px);font-size:13px}
.toast[hidden]{display:none}
@media(min-width:1400px) and (min-height:850px){.intro{padding:26px 0}.canvas-box{min-height:440px}.control-card{gap:16px;padding:20px}}
@media(max-width:1050px){.speed-stat{display:none}.experiment{grid-template-columns:minmax(0,1.3fr) minmax(305px,.85fr)}.visual-top{padding:12px}.control-card{padding:13px;gap:10px}.mission{align-items:stretch;flex-direction:column}.mission button{max-width:none;min-width:0}.mode-strip button{padding:10px}}
@media(max-width:760px){
 .page-shell{padding:0 12px 18px}
 .sitebar{padding:9px 12px}
 .site-actions{gap:9px}
 .site-actions .return{font-size:11px}
 .brand small{font-size:8px}
 .intro{padding:16px 1px 13px}
 .intro-copy>p:last-child{font-size:12px;max-width:640px}
 .mode-strip{gap:7px;padding-bottom:10px;position:relative}
 .mode-strip button{padding:9px 12px;border-radius:12px;min-height:42px;font-size:11px}
 .experiment{grid-template-columns:1fr;gap:10px}
 .visual-top{min-height:58px;padding:9px 12px}
 .visual-top strong{font-size:12px}
 .schematic{font-size:8px;padding:5px 7px}
 .canvas-box{aspect-ratio:960/520;min-height:210px}
 .visual-bottom{padding:8px 12px;min-height:44px}
 .visual-bottom #visualCaption{font-size:11px}
 .control-card{padding:13px;gap:11px}
 .control-heading h2{font-size:21px}
 .mode-description{font-size:12px}
 .control-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}
 .control-field label{font-size:11px}
 .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .mission{flex-direction:row;align-items:center}
 .mission button{min-width:93px;max-width:135px}
 .teaching-notes{gap:8px}
 footer{padding:16px 3px}
}
@media(max-width:480px){
 .brand strong{font-size:15px}
 .brand small{font-size:7px;letter-spacing:.1em}
 .brand img{width:29px;height:29px}
 .site-actions select{min-height:38px;padding:7px}
 h1{font-size:25px}
 .eyebrow{font-size:9px}
 .canvas-box{min-height:225px;aspect-ratio:1.55}
 .visual-bottom #visualCaption{max-width:73%}
 .control-fields{gap:11px 9px}
 .control-field label{flex-wrap:wrap;margin-bottom:4px;gap:3px}
 .metric strong{font-size:18px}
 .mission p{font-size:11px}
 .mission button{min-width:90px;max-width:110px;font-size:10px;padding:10px 7px}
 .control-bottom button{flex:1}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important;transition:none!important}}