.sandboxes-main{max-width:1600px;padding-top:52px}.sandbox-intro h1{font-size:clamp(35px,4vw,56px)}.sandbox-intro p{max-width:900px}.sandbox-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;margin-top:40px}.sandbox-card{position:relative;display:flex;flex-direction:column;min-height:330px;padding:24px 22px 68px;overflow:hidden;isolation:isolate;border:1px solid #347083;border-radius:10px;background:#031017;text-decoration:none!important;box-shadow:0 0 22px #54d8ff0b;transition:transform .2s,border-color .2s}.sandbox-card::before{content:"";position:absolute;inset:0;z-index:-2;background-image:var(--sandbox-art);background-position:center;background-size:cover}.sandbox-card::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#03101799,#031017cc)}main .sandbox-card,main .sandbox-card:visited,main .sandbox-card h2,main .sandbox-card p,main .sandbox-card strong,main .sandbox-card span{color:#fff!important}.sandbox-card h2{font-family:Consolas,monospace;font-size:18px;line-height:1.35;font-weight:700;margin:0 0 27px}.sandbox-card p{font-size:15px;line-height:1.6;margin:0;text-align:left}.sandbox-status{position:absolute;bottom:20px;left:24px;padding:5px 9px;border:1px solid #417d70;border-radius:4px;font-family:Consolas,monospace;font-size:12px;font-weight:700;line-height:1.5;background:#01090c99}.sandbox-card:hover{transform:translateY(-3px);border-color:#f5c542}.sandbox-card:focus-visible{outline:2px solid #f06d01;outline-offset:4px}.fusion-bg{border-color:#7841a2}.nuclear-bg{border-color:#8b7e59}.cardiac-bg{border-color:#9d8529}.future-card{align-items:center;justify-content:center;text-align:center;padding:24px 22px;border-style:dashed;border-color:#286374}.future-card p{text-align:center}.future-card::before,.future-card::after{display:none}.future-dots{display:flex;gap:18px;margin:0 0 28px}.future-dots span{height:14px;width:14px;background:#0d8199;border-radius:50%;box-shadow:0 0 15px #17d8ff44}.future-card h2{margin-bottom:25px}@media(max-width:1200px){.sandbox-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.sandboxes-main{padding-top:34px}.sandbox-intro h1{font-size:34px}.sandbox-grid{gap:18px}.sandbox-card{padding:22px 20px 65px}.sandbox-card h2{font-size:17px}}@media(max-width:600px){.sandbox-grid{grid-template-columns:1fr}}@media(max-width:480px){.sandbox-intro h1{font-size:29px}.sandbox-intro p br{display:none}}@media(prefers-reduced-motion:reduce){.sandbox-card{transition:none}}
/* Explicit local card artwork, independent of inline styles and pseudo-element layering. */
.sandbox-card{background-size:cover;background-position:center}.sandbox-card::before,.sandbox-card::after{display:none}
.sandbox-card.industrial-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Industrial.png")}
.sandbox-card.reliability-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Reliability.png")}
.sandbox-card.fusion-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Fusion.png")}
.sandbox-card.robotics-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Robotics.png")}
.sandbox-card.battery-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Battery.png")}
.sandbox-card.spaceflight-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Spaceflight.png")}
.sandbox-card.nuclear-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Nuclear.png")}
.sandbox-card.energy-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Energy.png")}
.sandbox-card.cardiac-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/cardiac_card_bg.png")}
.sandbox-card.internet-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Internet.png")}
.sandbox-card.spectral-bg{background-image:linear-gradient(#0003,#0003),linear-gradient(180deg,#03101766,#031017aa),url("sandboxes/Spectral.png")}

/* Open research: five travelling lights, without a card surface. */
.sandbox-card.future-card,.sandbox-card.future-card:hover{border:0;background:transparent;box-shadow:none;transform:none;border-radius:0}
.future-dots{gap:15px;align-items:center;height:28px;margin-bottom:25px}
.future-dots span{width:9px;height:9px;background:#f3b765;box-shadow:0 0 12px #f3b76577;animation:research-progress 2.4s ease-in-out infinite}
.future-dots span:nth-child(2){animation-delay:.16s}.future-dots span:nth-child(3){animation-delay:.32s}.future-dots span:nth-child(4){animation-delay:.48s}.future-dots span:nth-child(5){animation-delay:.64s}
@keyframes research-progress{0%,70%,100%{transform:translateX(-5px) scale(.75);opacity:.3}35%{transform:translateX(5px) scale(1.3);opacity:1;box-shadow:0 0 17px #ffd49a99}}
@media(prefers-reduced-motion:reduce){.future-dots span{animation:none;opacity:.8}}