:root{font-family: 'Trebuchet MS',Arial,sans-serif;color:#113d54;background:#90d9ed}*{box-sizing:border-box}body{margin:0;overflow:hidden}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;border:0;border-radius:14px;font-weight:800;color:#123d54;padding:12px 18px}button:focus-visible,a:focus-visible{outline:3px solid #fa9b17;outline-offset:3px}button:disabled{opacity:.6;cursor:wait}a{color:inherit}#scene{position:fixed;inset:0}#scene canvas{display:block;width:100%;height:100%}header{position:fixed;left:0;right:0;top:0;display:flex;align-items:center;gap:18px;padding:24px 4%;z-index:3;background:linear-gradient(#e5f9ffef,transparent)}.brand{display:flex;text-decoration:none;align-items:center;gap:12px;font-size:20px;font-weight:900;letter-spacing:-.7px}.brand b{display:block;color:#00799c;font-size:14px;letter-spacing:1.4px}.brand small{display:block;font-size:8px;letter-spacing:1.6px;margin-top:5px}.brand-icon{font-size:32px;background:#fff9;border-radius:50%;width:54px;height:54px;display:grid;place-items:center}.demo{margin-left:auto;background:#fff9;border:1px solid white;padding:9px 12px;border-radius:30px;font-size:10px;font-weight:bold;letter-spacing:1px}.screen{position:fixed;inset:0;pointer-events:none}button,a{pointer-events:auto}.intro{position:absolute;left:6%;top:24%;max-width:600px}.eyebrow{font-size:11px;font-weight:900;letter-spacing:2px;color:#17617b}h1{font-size:clamp(36px,4.7vw,72px);letter-spacing:-3px;line-height:1.04;margin:18px 0}h1 em{color:#007c95;font-style:normal}.intro p{font-size:18px;line-height:1.6}.tags{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.tags span{padding:8px 10px;background:#ffffffa8;border-radius:8px;font-size:11px;font-weight:bold}.primary{background:#ffce45;box-shadow:0 5px 0 #dca627;padding:17px 26px;font-size:17px}.secondary{background:#fff9;margin-left:8px}.small-note{font-size:11px;line-height:1.6;margin-top:22px;color:#295368}.mission-card{position:absolute;right:6%;bottom:15%;padding:24px;border-radius:20px;background:#ffffffe0;box-shadow:0 12px 40px #005a7220;border:1px solid white;max-width:350px}.mission-card h2{font-size:23px;margin:12px 0}.mission-card p,.mission-card small{font-size:12px}.mini-route{font-size:24px;letter-spacing:4px;color:#079f9b;margin:15px 0}footer{position:absolute;bottom:0;width:100%;display:flex;align-items:center;gap:20px;background:#f2fcf5ed;padding:14px 4%;font-size:11px}footer button{margin-left:auto;background:transparent;font-size:11px}#hud{position:fixed;inset:100px 0 0;pointer-events:none}.stats{display:flex;justify-content:center;gap:24px;background:#0f4054e8;color:white;width:max-content;margin:auto;border-radius:30px;padding:12px 25px;font-size:10px}.stats b{font-size:18px;margin-left:7px}.question{margin:12px auto 0;text-align:center;background:#fffffff2;border-radius:18px;padding:14px 24px;width:max-content;max-width:92%;box-shadow:0 5px 25px #21627d1a}.question small{color:#10896d;font-size:10px;font-weight:900;letter-spacing:2px}.question h2{margin:7px 0;font-size:25px}.question span{font-size:11px;color:#497183}.flight-controls{position:absolute;bottom:20px;left:4%;right:4%;display:flex;align-items:end;justify-content:space-between;gap:10px}.dpad{text-align:center}.dpad button{background:#ffffffc9;width:58px;height:52px;margin:3px;touch-action:none;user-select:none}.control-help{font-size:12px;text-align:center;line-height:1.7;background:#fff9;padding:12px;border-radius:15px}#fly{background:#ffce45;min-width:150px;padding:20px;touch-action:none;user-select:none;box-shadow:0 4px 0 #ca9b27}#fly span{display:block;font-size:9px;margin-top:6px}#feedback{margin:12px auto;text-align:center;font-size:20px;font-weight:bold;color:#fff;background:#075d7adc;border-radius:18px;max-width:620px;padding:12px;min-height:0}#feedback:empty{display:none}dialog{border:0;border-radius:24px;max-width:760px;width:92%;max-height:85dvh;overflow:auto;padding:30px;color:#123e55;box-shadow:0 30px 100px #002a5360}dialog::backdrop{background:#062c4577;backdrop-filter:blur(6px)}dialog h2{font-size:30px;margin-top:0}dialog p{line-height:1.6}.world-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.world{padding:18px;border-radius:15px;background:#e8f6fa}.world b{display:block;margin:8px 0}.world small{line-height:1.5}.result-number{font-size:70px;font-weight:900;color:#009e94}.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}table{border-collapse:collapse;width:100%;font-size:13px}td,th{text-align:left;padding:10px;border-bottom:1px solid #d6e5e9}.badge{background:#fff0c6;padding:8px 12px;border-radius:10px;display:inline-block}.review{font-size:13px;margin:10px 0;padding:10px;background:#eef7f9;border-radius:10px}body.playing header .brand{font-size:14px}body.playing .demo{font-size:8px}body.playing header{padding-top:12px}body.playing .brand-icon{width:40px;height:40px;font-size:26px}@media(max-width:700px){header{padding:16px 5%}.brand{font-size:15px}.brand b{font-size:10px}.brand-icon{width:40px;height:40px}.demo{font-size:7px;max-width:110px;text-align:center}.intro{left:6%;top:18%;right:6%}h1{font-size:42px;letter-spacing:-2px}.intro p{font-size:15px}.mission-card{display:none}.intro .secondary{display:block;margin:18px 0 0}.small-note{max-width:210px}footer{font-size:9px;gap:8px;flex-wrap:wrap;padding:8px 4%}footer>span{display:none}footer button{margin-left:0}#hud{top:78px}.stats{gap:13px;padding:9px 16px}.stats b{font-size:15px}.question{padding:10px 15px}.question h2{font-size:19px}.control-help{display:none}.dpad button{width:48px;height:45px}#fly{min-width:110px;padding:18px 10px}.flight-controls{bottom:22px}#feedback{font-size:14px;max-width:90%}.world-grid{grid-template-columns:1fr}dialog{padding:22px}dialog h2{font-size:24px}}@media(max-height:520px){header{padding:8px 3%}.intro{top:20%}h1{font-size:34px;margin:8px 0}.intro p,.small-note,.mission-card{display:none}.tags{margin:12px 0}.intro .secondary{display:inline-block;margin:0 0 0 8px}#hud{top:60px}.stats{position:absolute;left:15px;top:0;display:grid;gap:5px;border-radius:12px}.question{margin-top:0;max-width:60%;padding:8px 15px}.question h2{font-size:18px}.question span{display:none}.flight-controls{bottom:10px}.dpad button{height:36px;width:42px}.control-help{display:none}}

/* VISUAL 04 — approved landscape flight HUD; safe-area aware. */
:root{--safe-top:max(10px,env(safe-area-inset-top));--safe-left:max(14px,env(safe-area-inset-left));--safe-right:max(14px,env(safe-area-inset-right));--safe-bottom:max(14px,env(safe-area-inset-bottom))}
html,body{width:100%;height:100%;height:100dvh;overscroll-behavior:none}#scene, .screen{height:100dvh}#scene canvas{touch-action:none}
body.playing header{inset:var(--safe-top) var(--safe-right) auto auto;padding:0;background:none;pointer-events:none;z-index:8}
body.playing header .brand,body.playing header .demo,body.playing .asset-credit{display:none}
#pause{border-radius:30px;padding:9px 14px;background:#063b58df;color:white;border:1px solid #d4f4ffb3;font-size:15px;pointer-events:auto}
#hud{inset:0;height:100dvh;z-index:5}
.stats{position:absolute;left:var(--safe-left);top:var(--safe-top);margin:0;display:grid;gap:5px;width:142px;padding:10px 12px;border:1px solid #d8eef5b0;border-radius:16px;background:#103c57df;box-shadow:0 3px 12px #002b4320;font-size:12px;line-height:1.2}
.stats span{display:flex;justify-content:space-between;align-items:center;gap:8px}.stats b{font-size:16px;margin:0;font-variant-numeric:tabular-nums}
.question{position:absolute;top:var(--safe-top);left:50%;transform:translateX(-50%);margin:0;width:min(560px,calc(100% - 360px));max-width:none;padding:7px 18px 10px;border:1px solid #fff;border-radius:22px;background:#f6fcfff2;box-shadow:0 4px 16px #063b5820}
.question small{display:inline-block;padding:3px 13px;border-radius:20px;background:#087bc8;color:white;font-size:10px;letter-spacing:.6px}
.question h2{font-size:clamp(18px,2.5vw,28px);line-height:1.17;margin:5px 0 0}.question #hint{display:none}
.flight-controls{left:var(--safe-left);right:var(--safe-right);bottom:var(--safe-bottom);align-items:center;margin:0}
.dpad{display:flex;gap:12px}.dpad button{display:grid;place-items:center;width:clamp(58px,9vw,86px);height:clamp(58px,9vw,86px);border:2px solid #fff;border-radius:50%;margin:0;background:#0d6e7a80;color:white;font-size:30px;box-shadow:0 3px 14px #003d4920;touch-action:none;-webkit-user-select:none;user-select:none}
.dpad button:active{background:#138eabdd;transform:scale(.96)}.control-help{display:none}
#fly{min-width:170px;padding:17px 25px;border-radius:22px;background:#ffcf20;color:#073856;font-size:24px;border:1px solid #ffdf60;box-shadow:0 6px 0 #a47d13,0 10px 24px #083f5230;touch-action:none;-webkit-user-select:none;user-select:none}#fly span{font-size:9px;letter-spacing:.6px;margin-top:4px}#fly:active{transform:translateY(3px);box-shadow:0 3px 0 #a47d13}
#feedback{position:absolute;bottom:calc(var(--safe-bottom) + 104px);left:50%;transform:translateX(-50%);margin:0;width:max-content;max-width:75%;font-size:17px;padding:8px 16px;border-radius:14px;background:#073d57ec}
#rotateNotice{display:none;position:fixed;inset:0;z-index:50;background:linear-gradient(150deg,#06334cf5,#076773f5);color:white;align-items:center;justify-content:center;text-align:center;flex-direction:column;padding:25px}#rotateNotice h2{font-size:28px;margin:15px 0 8px}#rotateNotice p{line-height:1.6}#rotateNotice small{opacity:.8;font-size:12px}.rotate-icon{font-size:90px;line-height:1}
@media(orientation:landscape) and (max-height:600px){.stats{width:120px;font-size:10px;padding:8px 10px;gap:4px;border-radius:13px}.stats b{font-size:14px}.question{width:min(520px,calc(100% - 296px));padding:5px 12px 8px;border-radius:18px}.question h2{font-size:clamp(17px,2.5vw,23px)}.question small{font-size:8px;padding:2px 10px}#pause{padding:8px 11px;font-size:13px}.dpad button{width:60px;height:60px;font-size:25px}.dpad{gap:10px}#fly{min-width:158px;font-size:21px;padding:14px 21px}#feedback{font-size:14px;bottom:calc(var(--safe-bottom) + 78px)}.intro{top:22%;max-width:75%}.tags{margin:10px 0}footer{padding:8px 4%}}
@media(orientation:landscape) and (max-height:360px){:root{--safe-top:max(6px,env(safe-area-inset-top));--safe-bottom:max(10px,env(safe-area-inset-bottom))}.stats{padding:6px 8px;gap:3px}.question h2{font-size:17px}.dpad button{width:54px;height:54px}#fly{padding:11px 17px;font-size:19px}}
@media(orientation:portrait) and (pointer:coarse){#rotateNotice{display:flex}}
@media(orientation:portrait) and (max-width:700px){#rotateNotice{display:flex}}