body.arcade-open{overflow:hidden}#arcade[hidden]{display:none!important}#arcade{position:fixed;inset:0;z-index:35;background:#0d1522;color:#eef6ff;display:flex;flex-direction:column;--arcade-accent:#a2eddb}.arcade-top{padding:14px 26px;display:flex;justify-content:space-between;align-items:center;gap:15px;background:#131f30;border-bottom:1px solid #33465a;flex:none}.arcade-top span{font-size:9px;letter-spacing:.18em;color:var(--arcade-accent)}.arcade-top h1{font-size:23px;margin:3px 0 0}.arcade-top-actions{display:flex;gap:8px}.arcade-top-actions button{padding:8px 12px;background:#22324a;border:1px solid #3b506c;border-radius:7px;color:#d5e2f3;font-size:11px}.arcade-top-actions button[aria-pressed=true]{color:#bffae3;border-color:#84c9ae;background:#244e40}.arcade-hud{display:flex;justify-content:space-between;gap:24px;padding:13px 28px;background:#101c2c;flex:none}.arcade-hud small{display:block;color:#8fa7bf;font-size:10px}.arcade-hud strong{display:block;font-size:22px;letter-spacing:.05em;color:var(--arcade-accent)}#arcade-health{color:#ff9da9;font-size:20px}.arcade-stage{position:relative;flex:1;min-height:220px;overflow:hidden;background:#0d1624}#arcade-canvas{display:block;width:100%;height:100%;outline:none;touch-action:none}#arcade-canvas:focus-visible{outline:2px solid var(--arcade-accent);outline-offset:-3px}.arcade-bottom{padding:12px 24px 6px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex:none;border-top:1px solid #2e4255;background:#132032}.arcade-bottom>p{font-size:11px;color:#a5bbd2;margin:0;max-width:430px}.arcade-pad{display:grid;grid-template-columns:repeat(3,35px);grid-template-rows:repeat(2,29px);gap:3px;flex:none}.arcade-pad [data-hold=up]{grid-column:2}.arcade-pad [data-hold=left]{grid-column:1;grid-row:2}.arcade-pad [data-hold=down]{grid-column:2;grid-row:2}.arcade-pad [data-hold=right]{grid-column:3;grid-row:2}.arcade-pad button{background:#243c54;border:1px solid #46627c;border-radius:5px;color:#dff3fa;touch-action:none}.arcade-action-buttons{display:flex;gap:8px;flex:none}.arcade-action-buttons button{padding:14px 17px;background:#243a52;border:1px solid #405c73;border-radius:8px;font-size:12px;color:#dfebf5;touch-action:manipulation;user-select:none}.arcade-action-buttons #arcade-hit{background:var(--arcade-accent);color:#182b37;font-weight:bold;border-color:transparent;min-width:130px}.arcade-action-buttons button:active{transform:translateY(2px);filter:brightness(1.2)}.arcade-science{font-size:9px;color:#92a5bb;line-height:1.7;padding:6px 24px 9px;text-align:center;flex:none;background:#132032}#arcade-overlay{position:absolute;inset:0;display:grid;place-items:center;background:#060d1dba;backdrop-filter:blur(5px);z-index:4;padding:14px;overflow:auto}#arcade-overlay[hidden]{display:none}.arcade-modal{max-width:630px;text-align:center;padding:28px 35px;background:linear-gradient(135deg,#1a2d41,#111f32);border:1px solid #3d5a70;border-radius:18px;box-shadow:0 20px 80px #0005}.arcade-sticker{display:inline-block;padding:5px 11px;border:1px solid var(--arcade-accent);border-radius:5px;font-size:9px;letter-spacing:.15em;color:var(--arcade-accent);margin-bottom:16px}.arcade-modal h2{font-size:30px;margin:0 0 16px;word-break:keep-all}.arcade-modal p{font-size:13px;color:#bcd0e0;line-height:1.9;margin-bottom:20px;word-break:keep-all}.arcade-rule{background:#0d1c2c;padding:13px;border-radius:8px;color:#aac4d8;font-size:11px;margin-bottom:22px}.arcade-modal .btn{margin:4px;min-width:160px;background:var(--arcade-accent)}.arcade-modal .btn.secondary{background:#293e53}.arcade-modal .btn.subtle{background:transparent}.arcade-result{font-size:35px;color:var(--arcade-accent);font-weight:bold;margin:12px 0 20px}.arcade-result span{display:block;font-size:12px;color:#a9c1d1;font-weight:normal;margin-top:7px}#arcade-toolbox{position:absolute;top:12px;left:50%;transform:translateX(-50%);display:flex;gap:7px;z-index:2}#arcade-toolbox[hidden]{display:none}#arcade-toolbox button{background:#102036dc;border:1px solid #415065;border-radius:7px;padding:8px 11px;font-size:10px;white-space:nowrap;color:#c0cbd7}#arcade-toolbox button[aria-pressed=true]{border-color:var(--tool-color);color:var(--tool-color);background:#233249}#arcade-toolbox kbd{padding:1px 4px;border:1px solid currentColor;margin-right:5px;border-radius:3px;font-family:inherit}.arcade-stage-caption{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);padding:7px 15px;color:#d6e9fa;background:#0b1729dd;border:1px solid #384e65;border-radius:20px;font-size:11px;text-align:center;pointer-events:none;white-space:nowrap}.arcade-open .travel-controls{pointer-events:none}.arcade-pad button:focus-visible,.arcade-action-buttons button:focus-visible{outline:3px solid #e3fff2;outline-offset:3px}.research-cards{display:grid;gap:12px}.research-card{padding:18px;border:1px solid #355065;background:#172a3b;border-radius:10px}.research-card h3{font-size:16px;margin-bottom:8px}.research-card p{font-size:12px;color:#bad0df;line-height:1.9;margin:0}
@media(max-width:700px){.arcade-top{padding:10px 13px;gap:8px}.arcade-top span{font-size:7px}.arcade-top h1{font-size:18px}.arcade-top-actions{gap:4px;flex-wrap:wrap;justify-content:end;max-width:220px}.arcade-top-actions button{font-size:9px;padding:6px 8px}.arcade-hud{padding:10px 14px;gap:8px}.arcade-hud small{font-size:8px}.arcade-hud strong{font-size:17px}#arcade-health{font-size:15px}.arcade-bottom{padding:9px 12px 4px;gap:8px;flex-wrap:wrap}.arcade-bottom>p{order:3;max-width:100%;width:100%;text-align:center;font-size:9px}.arcade-pad{grid-template-columns:repeat(3,29px);grid-template-rows:repeat(2,29px);gap:2px}.arcade-action-buttons{gap:5px;flex:1;justify-content:end}.arcade-action-buttons button{padding:12px 8px;font-size:9px}.arcade-action-buttons #arcade-hit{min-width:95px}.arcade-science{padding:5px 12px 7px;font-size:8px}.arcade-modal{padding:20px 17px}.arcade-modal h2{font-size:23px}.arcade-modal p{font-size:11px}.arcade-rule{font-size:9px}.arcade-sticker{font-size:8px;margin-bottom:11px}.arcade-stage-caption{bottom:9px;font-size:9px;width:90%;white-space:normal;padding:5px 8px}#arcade-toolbox{gap:4px;top:9px}#arcade-toolbox button{padding:6px;font-size:8px}#arcade-toolbox kbd{margin-right:2px}.arcade-modal .btn{font-size:11px;padding:10px;min-width:145px}}
@media(max-height:550px){.arcade-top{padding:4px 12px;height:43px}.arcade-top h1{font-size:16px;margin:0}.arcade-top span{font-size:7px}.arcade-top-actions button{font-size:9px;padding:4px 7px}.arcade-hud{padding:4px 15px;height:43px}.arcade-hud strong{font-size:16px}.arcade-hud small{font-size:8px}#arcade-health{font-size:15px}.arcade-stage{min-height:100px}.arcade-bottom{padding:5px 12px;min-height:44px}.arcade-bottom>p{display:none}.arcade-pad{grid-template-columns:repeat(3,26px);grid-template-rows:repeat(2,21px)}.arcade-action-buttons button{padding:8px 10px;font-size:9px}.arcade-science{font-size:7px;line-height:1.3;padding:3px 10px}.arcade-modal{padding:12px 18px;max-width:580px}.arcade-modal h2{font-size:20px;margin-bottom:6px}.arcade-modal p{font-size:10px;margin-bottom:8px;line-height:1.5}.arcade-sticker{font-size:7px;padding:2px 7px;margin-bottom:7px}.arcade-rule{padding:7px;font-size:9px;margin-bottom:8px}.arcade-modal .btn{font-size:10px;padding:8px;min-width:135px}.arcade-result{font-size:24px;margin:8px 0}.arcade-stage-caption{bottom:5px;font-size:8px;padding:3px 9px}#arcade-toolbox{top:4px}#arcade-toolbox button{padding:3px 8px;font-size:8px}}
.arcade-location{display:flex;align-items:center;gap:15px;padding:10px 26px;background:linear-gradient(100deg,#24384b,#132032);border-bottom:1px solid #607583;flex:none}.location-body{width:48px;height:72px;flex:none;fill:#334c60;stroke:#8199ad;stroke-width:1.5}.location-body [data-organ]{fill:#486177;stroke:#7890a2}.location-body [data-organ].active{fill:var(--arcade-accent);stroke:#fff;stroke-width:2;filter:drop-shadow(0 0 4px var(--arcade-accent))}.location-copy{display:flex;flex-direction:column;gap:3px}.location-copy small{font-size:10px;color:#a9becb}.location-copy strong{font-size:24px;color:var(--arcade-accent)}.location-copy>span{font-size:11px;color:#d3e0e8}.location-route{margin-left:auto;display:flex;align-items:center;gap:6px;max-width:43%;flex-wrap:wrap;justify-content:flex-end}.location-route span{padding:5px 8px;font-size:10px;border:1px solid #455f72;border-radius:6px;color:#a8bacb}.location-route .current{color:#142436;background:var(--arcade-accent);border-color:var(--arcade-accent);font-weight:bold}.location-route b{color:#7b91a2}
@media(max-width:700px){.arcade-location{padding:7px 12px;gap:9px}.location-body{width:32px;height:49px}.location-copy strong{font-size:17px}.location-copy small{font-size:8px}.location-copy>span{font-size:9px}.location-route{display:none}}
@media(max-height:550px){.arcade-location{padding:3px 12px;gap:8px}.location-body{width:22px;height:33px}.location-copy strong{font-size:15px}.location-copy small{font-size:7px}.location-copy>span{display:none}.location-route span{font-size:8px;padding:3px 5px}.arcade-stage{min-height:55px}}
@media(max-height:400px){.arcade-science{display:none}}
.run-time-card{display:flex;justify-content:space-between;align-items:center;gap:16px;background:#183248;border:1px solid #719f9c;border-radius:14px;padding:18px 22px;margin:18px 0;color:#d6e8eb}.run-time-card small{display:block;color:#a5daca}.run-time-card strong{display:block;font-size:34px;color:#c0ffe4;font-variant-numeric:tabular-nums}.run-time-card p,.run-time-card span{font-size:11px;margin:5px 0}.live-run-time{font-size:11px!important;letter-spacing:0!important;color:#baffdc!important;align-self:center;font-variant-numeric:tabular-nums;white-space:nowrap}@media(max-width:700px){.run-time-card{padding:12px;flex-wrap:wrap}.live-run-time{font-size:8px!important}}@media(max-height:550px){.live-run-time{font-size:8px!important}}
/* Thumb-sized controls on phones and touch tablets. */
@media (pointer:coarse), (max-width:700px) {
 #arcade .arcade-bottom{padding:10px max(10px,env(safe-area-inset-right)) 8px max(10px,env(safe-area-inset-left));gap:10px;flex-wrap:wrap;align-items:center}
 #arcade .arcade-pad{grid-template-columns:repeat(3,52px);grid-template-rows:repeat(2,52px);gap:5px}
 #arcade .arcade-pad button{padding:0;font-size:24px;border-radius:12px;user-select:none;-webkit-user-select:none}
 #arcade .arcade-pad button:active{background:#49756e;border-color:#baffdc}
 #arcade .arcade-action-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;flex:1;min-width:120px;max-width:240px}
 #arcade .arcade-action-buttons button{min-height:52px;padding:8px 5px;font-size:12px;border-radius:12px;overflow-wrap:anywhere}
 #arcade .arcade-action-buttons #arcade-hit{grid-column:1/-1;min-width:0;font-size:14px}
 #arcade .arcade-bottom>p{order:3;width:100%;max-width:none;text-align:center}
 #arcade-toolbox{width:calc(100% - 12px);max-width:440px;display:grid;grid-template-columns:repeat(4,minmax(44px,1fr));gap:4px}
 #arcade #arcade-toolbox button{min-height:44px;padding:6px;font-size:10px;white-space:normal}
 #arcade-toolbox kbd{display:none}
 #arcade .arcade-science{padding-bottom:max(7px,env(safe-area-inset-bottom))}
}
/* Quiz uses the full viewport so choices remain reachable on small screens. */
#arcade.quiz-open #arcade-overlay{position:fixed;inset:0;z-index:10;overflow:auto;align-items:start;padding:max(16px,env(safe-area-inset-top)) 12px max(16px,env(safe-area-inset-bottom))}
.arcade-quiz{width:min(630px,100%);box-sizing:border-box;margin:auto}
.quiz-choices{display:grid;gap:10px;text-align:left}
.quiz-choices button{min-height:52px;padding:12px 16px;border:1px solid #658299;border-radius:10px;background:#213d52;color:#eefaff;font:inherit;text-align:left;cursor:pointer;touch-action:manipulation}
.quiz-choices button:focus-visible{outline:3px solid #a2eddb;outline-offset:2px}
.quiz-choices button:disabled{opacity:.55;cursor:default}
#quiz-feedback{min-height:24px;margin:15px 0;line-height:1.7}
#quiz-feedback.correct{color:#a2eddb}
#quiz-feedback.retry{color:#ffd17d}
@media (pointer:coarse), (max-width:700px){
 #arcade .arcade-stage{min-height:0}
 #arcade .arcade-action-buttons button[hidden]{display:none}
}
@media (max-height:550px) and (pointer:coarse), (max-height:550px) and (max-width:700px){
 #arcade .arcade-bottom{position:absolute;left:0;right:0;bottom:0;z-index:3;background:transparent;border:0;pointer-events:none;flex-wrap:nowrap}
 #arcade .arcade-pad,#arcade .arcade-action-buttons{pointer-events:auto}
 #arcade .arcade-action-buttons{max-width:164px}
 #arcade .arcade-bottom>p,#arcade .arcade-science{display:none}
 #arcade .arcade-stage-caption{bottom:116px;max-width:60%;font-size:8px}
 #arcade .arcade-top{height:40px;box-sizing:border-box}
 #arcade .arcade-hud{height:34px;box-sizing:border-box}
 #arcade .arcade-location{height:34px;box-sizing:border-box}
 #arcade #arcade-overlay:not([hidden]){position:fixed;inset:0;z-index:10;align-items:start;overflow:auto}
}