@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--bg:#090d19;--panel:#111724;--line:#28303f;--muted:#8993a9;--lime:#d6fc73}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#f4f6fa;font-family:'DM Sans',sans-serif}.stars{position:fixed;inset:0;pointer-events:none;z-index:-1;background-image:radial-gradient(circle at 1px 1px,#7185ab50 1px,transparent 0);background-size:93px 79px;mask-image:linear-gradient(black,transparent 85%)}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button:focus-visible,a:focus-visible{outline:2px solid var(--lime);outline-offset:5px}header{height:96px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5%}.brand{color:white;text-decoration:none;font:700 21px 'Space Grotesk',sans-serif;letter-spacing:2px;display:grid;grid-template-columns:42px auto}.brand-icon{grid-row:span 2;color:var(--lime);font-size:36px;line-height:36px}.brand-sub{font:9px 'DM Sans';letter-spacing:3.2px;color:var(--muted);margin-top:3px}nav{display:flex;gap:30px;height:100%}.nav{background:none;border:0;color:var(--muted);font-size:13px;position:relative}.nav.active{color:var(--lime)}.nav.active:after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--lime)}.nav span{background:#252d3c;border-radius:5px;padding:3px 6px;font-size:10px;margin-left:6px}.sound{border:1px solid var(--line);background:none;border-radius:8px;padding:10px 13px;font-size:12px;color:var(--muted)}main{max-width:1320px;margin:auto;padding:30px 5%}.topline{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1.6px;color:#6c788d}.topline i{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--lime);margin-right:7px}.intro{display:flex;justify-content:space-between;align-items:center;padding:39px 0 36px}.eyebrow{font-size:9px;letter-spacing:1.8px;color:var(--muted);font-weight:700}h1,h2,h3{font-family:'Space Grotesk',sans-serif}h1{font-size:clamp(32px,3.6vw,49px);line-height:1.12;letter-spacing:-2px;margin:14px 0 18px}h1 em{color:var(--lime);font-style:normal}p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}.record{display:flex;gap:20px;border:1px solid var(--line);padding:23px 30px;border-radius:12px;background:#11172480}.record>span{color:var(--lime);font-size:31px}.record small,.record label{display:block;font-size:9px;letter-spacing:1.4px;color:var(--muted)}.record strong{font:500 35px 'Space Grotesk';display:block;margin:5px 0}.record label{font-size:8px}.dashboard{display:grid;grid-template-columns:1.6fr 1fr;gap:22px}.mission-panel,aside{border:1px solid var(--line);background:var(--panel);border-radius:15px;padding:27px}.section-head{display:flex;justify-content:space-between;align-items:center}.section-head h2{font-size:20px;margin:9px 0 23px;letter-spacing:-.5px}.tag{font-size:9px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:6px 9px;white-space:nowrap}.modes{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.mode{border:1px solid var(--line);background:#151c2b;border-radius:10px;padding:17px 5px 12px;display:grid;justify-items:center;gap:9px}.mode .symbol{font:400 32px 'Space Grotesk';color:var(--color)}.mode strong{font-size:11px}.mode small{font-size:8px;letter-spacing:.6px;color:var(--muted)}.mode.selected{border-color:var(--color);background:color-mix(in srgb,var(--color) 8%,#111724)}.level-head{display:flex;align-items:center;justify-content:space-between;margin-top:23px}h3{font-size:12px;margin:0}.level-head>span{font-size:10px;color:var(--muted)}.levels{display:flex;gap:10px;margin:12px 0 24px}.level{flex:1;background:#151c2b;border:1px solid var(--line);border-radius:7px;height:43px;color:var(--muted);font:500 14px 'Space Grotesk'}.level.selected{background:var(--lime);border-color:var(--lime);color:#171d15}.level:disabled{opacity:.45;cursor:not-allowed}.difficulty{border-top:1px solid var(--line);padding:21px 0;display:flex;align-items:center;justify-content:space-between;gap:10px}.difficulty p{font-size:9px;margin-top:5px}.segmented{display:flex;background:#090e19;padding:4px;border-radius:7px;gap:2px}.segmented button{background:none;border:0;border-radius:4px;padding:7px 10px;font-size:10px;color:var(--muted)}.segmented .selected{color:var(--lime);background:#293421}.launch{width:100%;background:var(--lime);border:0;border-radius:7px;color:#172012;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:space-between;padding:16px 19px}.launch:hover{background:#e2ffa0}.launch span{font-size:21px;line-height:12px}.launch-note{text-align:center;color:#778197;font-size:9px;margin-top:13px}aside{background:radial-gradient(ellipse at 50% 40%,#21304a80,transparent 65%),#101622;overflow:hidden}.ship-head{display:flex;justify-content:space-between;align-items:center}.live{font-size:7px;color:var(--lime);letter-spacing:1px;background:#d6fc7310;border-radius:20px;padding:5px 7px}aside h2{font-size:25px;margin:14px 0 4px}aside>p{font-size:11px}.ship-stage{height:244px;display:flex;align-items:center;justify-content:center;position:relative}.ship-stage:before{content:'';width:205px;height:205px;border:1px solid #7386a01c;border-radius:50%;position:absolute;box-shadow:0 0 0 27px #7386a008,0 0 0 53px #7386a006}.ship-stage svg{height:215px;position:relative;filter:drop-shadow(0 14px 20px #0009);animation:float 5s ease-in-out infinite}.build-row{display:flex;justify-content:space-between;font-size:10px}.build-row span{color:var(--lime)}.track{height:5px;background:#252e3e;border-radius:8px;overflow:hidden;margin:11px 0 19px}.track>div{height:100%;background:var(--lime);transition:width .3s}.next-part{border:1px solid var(--line);border-radius:8px;padding:13px;display:flex;gap:12px;align-items:center}.next-part>span{font-size:23px;color:var(--lime)}.next-part>span:last-child{margin-left:auto;font-size:18px}.next-part small{display:block;font-size:7px;letter-spacing:1px;color:var(--muted);margin-bottom:5px}.next-part strong{font-size:10px}.how{display:flex;justify-content:space-between;padding:29px 0 34px;gap:20px}.how>div{display:flex;gap:12px;align-items:center}.how>div>span{font:12px 'Space Grotesk';border:1px solid var(--line);color:var(--muted);padding:10px;border-radius:50%}.how p{font-size:9px}.how strong{display:block;color:#d2d7e2;font-size:11px;margin-bottom:3px}footer{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;color:#636f83;font-size:8px;letter-spacing:1px}dialog{width:min(540px,94vw);border:1px solid #40506b;border-radius:18px;background:#111a2b;color:white;padding:28px;box-shadow:0 30px 150px #000}dialog::backdrop{background:#050915dd;backdrop-filter:blur(10px)}.game-top{display:flex;justify-content:space-between;align-items:center;color:var(--lime);font-size:10px;letter-spacing:1px}.game-top button{border:0;background:#263247;border-radius:7px;padding:7px 11px}.hud{display:flex;justify-content:space-around;text-align:center;margin:25px 0;font-size:9px;color:var(--muted)}.hud strong{display:block;font:28px 'Space Grotesk';color:white;margin-top:7px}#equation{font-size:54px;text-align:center;margin:20px 0}#questionCount{text-align:center;font-size:11px}form label{display:block;font-size:11px;color:var(--muted);margin-bottom:8px}input{width:100%;font:28px 'Space Grotesk';padding:12px;background:#0b1120;border:1px solid #566b8d;border-radius:7px;color:white;text-align:center;margin-bottom:15px}#feedback{min-height:30px;text-align:center;margin-top:12px;color:var(--lime)}.hint{text-align:center;font-size:10px}#result{text-align:center;padding-top:28px}#result h2{font-size:30px}#result .reward{font-size:45px;color:var(--lime)}#result p{margin:15px 0 25px}#collectionParts{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;margin:20px 0}.part{font-size:10px;padding:10px;background:#1c2639;border-radius:6px;color:#7b899e}.part.earned{color:var(--lime);background:#d6fc7310}@keyframes float{50%{transform:translateY(-9px)}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}@media(min-width:1450px){main{padding-top:38px}.intro{padding:45px 0}.ship-stage{height:260px}}@media(max-width:850px){.dashboard{grid-template-columns:1fr}.intro{gap:20px}.record{padding:18px}.tag{display:none}.ship-stage{height:230px}.how{flex-wrap:wrap}header{padding:0 5%;height:80px}nav{gap:12px}.nav{font-size:10px}.sound span{display:none}.brand{font-size:15px;grid-template-columns:33px auto}.brand-sub{font-size:7px;letter-spacing:2px}.brand-icon{font-size:28px}.topline>span:last-child{display:none}aside{display:none}footer{gap:25px;line-height:1.7}}@media(max-width:480px){.intro{align-items:flex-start}.record{padding:12px;gap:8px;margin-top:15px}.record>span{display:none}.record strong{font-size:26px}.record small{font-size:7px}h1{font-size:32px}.intro p{font-size:11px}.mission-panel{padding:20px 15px}.mode strong{font-size:10px}.difficulty{align-items:flex-start;flex-direction:column}.segmented{width:100%}.segmented button{flex:1}nav{gap:8px}.nav span{display:none}.how{gap:20px}.sound{padding:7px}}
#game{width:min(680px,96vw);padding:22px}#game .hud{margin:16px 0}#game .hud strong{font-size:23px;margin-top:4px}.flight-meta{display:flex;justify-content:space-between;margin-bottom:10px;color:var(--lime);font-size:11px}#arena{height:clamp(240px,40vh,380px);position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 100%,#293c65,transparent 65%),radial-gradient(circle at 1px 1px,#a6c5f766 1px,transparent 1px),#080f20;background-size:auto,47px 41px,auto;border:1px solid #354765;border-radius:10px;margin-bottom:14px}#playerShip{position:absolute;bottom:1%;left:50%;transform:translateX(-50%);font-size:38px;color:var(--lime);text-align:center;line-height:.7;filter:drop-shadow(0 0 12px #b7ff6a99)}#playerShip span{display:block;font-size:20px;white-space:nowrap;margin-top:8px}.danger-line{position:absolute;top:85%;left:0;width:100%;border-top:1px dashed #ff99794d;color:#ffb8a166;text-align:right;font-size:7px;letter-spacing:2px;padding:4px}.falling-equation{position:absolute;top:-5%;transform:translateX(-50%);background:#1b2d49;border:1px solid #8ea7cf;border-radius:10px;padding:10px 13px;font:600 clamp(16px,3vw,23px) 'Space Grotesk';white-space:nowrap;box-shadow:0 0 20px #7eabf322;color:#f0f6ff}.falling-equation:before{content:'';position:absolute;top:-14px;left:50%;height:12px;width:1px;background:linear-gradient(transparent,#a5c6ff)}#effects{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.laser{stroke:#d6fc73;stroke-width:1;filter:drop-shadow(0 0 2px #d6fc73);animation:laserFade .35s forwards}.exploded{background:#d6fc73;color:#152015;border-color:#efffc8;animation:explode .35s forwards!important}.damage{animation:shieldHit .4s}#answerForm{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px;align-items:center}#answerForm label{grid-column:1/-1;margin:0}#answerForm input{margin:0;padding:9px;font-size:23px}#answerForm button{justify-content:center;padding:15px 10px}#feedback{font-size:12px;min-height:23px;margin:9px 0 0}@keyframes laserFade{to{opacity:0}}@keyframes explode{to{opacity:0;transform:translateX(-50%) scale(1.6)}}@keyframes shieldHit{50%{box-shadow:inset 0 0 60px #ff685a99}}
.game-actions{display:flex;align-items:center;gap:8px}.game-actions #gameSound{font-size:10px;color:var(--lime);letter-spacing:0}.reward-card{margin:18px auto 0;padding:18px;background:radial-gradient(ellipse at center,#d6fc731a,transparent 70%),#0b1423;border:1px solid #d6fc7366;border-radius:14px;max-width:340px}.component-display{height:155px;display:flex;justify-content:center;align-items:center}.component-display svg{height:150px;width:150px;filter:drop-shadow(0 0 16px #d6fc7333);animation:componentReveal .55s ease-out}.reward-card h3{font-size:23px;margin:5px 0 8px;color:var(--lime)}.reward-count{font-size:10px;color:var(--muted)}#result{padding-top:12px}#result>.reward{font-size:25px}#result>h2{margin:7px 0;font-size:26px}#result>p{margin:12px 0 17px}@keyframes componentReveal{from{opacity:0;transform:translateY(15px) scale(.6) rotate(-12deg)}to{opacity:1;transform:none}}@media(max-height:730px){.component-display,.component-display svg{height:100px}.reward-card{padding:12px;margin-top:10px}#result>p{font-size:11px;line-height:1.5}#result>h2{font-size:22px}}
#collection{width:min(950px,96vw);max-height:94vh}#collection>h2{margin:18px 0 5px}.hangar-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:22px;margin:22px 0}.hangar-ship{border:1px solid var(--line);border-radius:12px;background:radial-gradient(ellipse,#25385177,transparent 70%),#0a1220;padding:20px;align-self:start;text-align:center;position:sticky;top:0}#assembly svg{width:100%;max-width:280px;height:340px}#assemblyCount{font-size:20px;color:var(--lime);margin:8px 0}.hangar-ship p{font-size:10px}.battle-unlock{padding:18px;background:#d6fc7308;border:1px solid #d6fc7338;border-radius:10px}.battle-unlock h3{margin:10px 0;font-size:17px}.battle-unlock p{font-size:12px;margin:10px 0}.battle-unlock small{display:block;color:var(--muted);font-size:9px;line-height:1.6;margin-top:10px}.launch:disabled{background:#293346;color:#8593a9;cursor:not-allowed}.part{border:1px solid transparent}.part.highlight{border-color:var(--lime)}.ship-component.highlight{filter:drop-shadow(0 0 5px #d6fc73);opacity:1!important}#battleDialog{width:min(960px,98vw);max-height:98vh;padding:20px}#battleCanvas{display:block;width:100%;height:auto;max-height:58vh;background:#080f20;border:1px solid #354765;border-radius:10px;touch-action:none;object-fit:contain}.battle-instructions{font-size:10px;text-align:center;margin:12px 0}.touch-controls{display:flex;gap:10px;justify-content:center}.touch-controls button{background:#23334c;border:1px solid #526685;border-radius:8px;min-width:56px;padding:13px;touch-action:none;user-select:none}.touch-controls button:last-child{background:var(--lime);color:#14200c;font-weight:700;min-width:95px}#battleFeedback{text-align:center;color:var(--lime);font-size:11px;margin-top:10px}#battleResult{text-align:center;padding:30px 10px}#battleResult h2{font-size:30px}#battleResult p{margin:20px 0}#battleResult strong{font-size:38px;color:var(--lime)}@media(max-width:650px){.hangar-layout{grid-template-columns:1fr}.hangar-ship{position:static}#assembly svg{height:240px}#collectionParts{margin-top:12px}#battleDialog{padding:14px}.battle-instructions{font-size:9px}#battlePlay .hud{margin:14px 0}} 
/* Equation saucers: readable cockpit display, glass dome, metallic rim, running lights. */
.falling-equation{width:29%;max-width:150px;min-height:43px;text-align:center;isolation:isolate;border-radius:50%;border:1px solid #96b6d8;padding:10px 2px 15px;line-height:1.1;font-size:clamp(12px,2.7vw,21px);letter-spacing:-.4px;background:linear-gradient(180deg,#b4cde5 0%,#536f90 16%,#172c49 24%,#12243e 65%,#7e9abc 69%,#bbd1e5 77%,#3a526e 90%,#17283f 100%);box-shadow:0 7px 18px #72caff30,inset 0 -3px 5px #071424aa;text-shadow:0 1px 3px #030a14,0 0 8px #83d4ff60;color:#f5fcff}
.falling-equation:before{content:'';position:absolute;left:26%;top:-16px;width:48%;height:25px;z-index:-1;border:1px solid #a8eaffb3;border-radius:70% 70% 15% 15% / 100% 100% 20% 20%;background:radial-gradient(ellipse at 32% 23%,#d7ffffbd 0%,#89eaff45 25%,transparent 48%),linear-gradient(115deg,#2d789b,#54c8d99c 55%,#173f66);box-shadow:0 -3px 14px #72dfff30,inset -6px 0 8px #0c2b5266;transform:none}
.falling-equation:after{content:'';position:absolute;left:16%;bottom:4px;width:68%;height:4px;border-radius:50%;background:radial-gradient(circle,#d6fc73 0 2px,transparent 2.5px) center/16px 4px repeat-x;filter:drop-shadow(0 0 3px #d6fc73)}
.falling-equation.exploded{background:linear-gradient(#f5ffbf,#d6fc73);border-color:white;color:#18230b;box-shadow:0 0 36px #d6fc73aa;text-shadow:none}.falling-equation.exploded:before{background:#d6fc73;border-color:white}.falling-equation.exploded:after{filter:brightness(2)}
@media(max-width:400px){.falling-equation{min-height:37px;padding-top:9px;padding-bottom:12px}.falling-equation:before{top:-12px;height:20px}.falling-equation:after{bottom:3px;background-size:12px 4px}}
.brand{font-size:19px;letter-spacing:.2px}.brand-sub{letter-spacing:3px}@media(max-width:650px){.brand{font-size:14px;grid-template-columns:28px auto}.brand-sub{font-size:7px;letter-spacing:1.7px}.brand-icon{font-size:25px}nav{gap:8px}.nav{font-size:9px}}