[hidden]{display:none!important}button,input{font:inherit}button{cursor:pointer;touch-action:manipulation}button:focus-visible,input:focus-visible{outline:3px solid #7b52c8;outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}
.blaster-shell{width:min(960px,100%);margin:auto;padding:22px 24px 36px}.page-nav{display:flex;justify-content:space-between;gap:12px;margin-bottom:22px;font-size:13px;color:#115e59}.page-nav a{text-decoration:none;padding:8px 0}.game-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.game-heading img{width:170px;height:auto;border-radius:10px}.game-heading h1{font-size:clamp(30px,4vw,44px);margin:0 0 12px}.game-heading h1 span{color:#115e59}.game-heading p:not(.eyebrow){color:#586d64;font-size:15px;line-height:1.5}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:18px 0 12px;font-size:13px;color:#586d64}.toolbar>div{display:flex;gap:8px}.small-button{border:1px solid #d6e2db;background:white;color:#365b4f;border-radius:8px;padding:10px 12px;min-height:44px;font-weight:700;font-size:12px}
.math-panel{background:white;border:1px solid #d6e2db;border-radius:20px;padding:22px;box-shadow:0 12px 40px #134e4a08;text-align:center}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.stats>div{background:#e7f1ec;border-radius:10px;padding:12px}.stats span{display:block;font-size:11px;color:#586d64;font-weight:700}.stats strong{display:block;font-size:25px;color:#134e4a;margin-top:4px;font-variant-numeric:tabular-nums}.pips{display:flex;justify-content:center;gap:8px;margin:18px 0}.pips i{width:30px;height:6px;background:#dfebf1;border-radius:6px}.pips i.filled{background:#115e59}.question-label{font-size:11px;font-weight:700;letter-spacing:2px;color:#586d64;margin:12px 0}.question{font-size:clamp(32px,6vw,56px);font-weight:800;color:#134e4a;margin:14px 0 22px;font-variant-numeric:tabular-nums;line-height:1.2}.submit-button{border:0;border-radius:10px;background:#115e59;color:white;min-height:50px;padding:14px 22px;font-size:16px;font-weight:700;white-space:nowrap}.submit-button:hover{background:#134e4a}.feedback{min-height:24px;font-size:14px;color:#586d64;margin:14px 0}.feedback.good{color:#216c42}.feedback.bad{color:#a72e41}.math-panel.correct-flash{animation:correct-flash .35s ease}.math-panel.wrong-flash{animation:wrong-flash .3s ease}.answer-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:480px;margin:0 auto}.answer-choice{min-height:82px;border:2px solid #d6e2db;border-radius:14px;background:#e7f1ec;color:#134e4a;font-size:clamp(26px,5vw,36px);font-weight:800;font-variant-numeric:tabular-nums}.answer-choice:hover{background:#dbece2;border-color:#115e59}.answer-choice:active{background:#c9e2d4}.answer-choices:focus{outline:none}.math-tip{font-size:12px;line-height:1.7;color:#586d64;margin:18px 0 0}
.overlay{position:fixed;inset:0;z-index:40;background:#134e4a99;display:grid;place-items:center;padding:16px;overflow-y:auto}.setup-card{background:white;width:min(640px,100%);padding:30px;border-radius:20px;text-align:center;max-height:calc(100dvh - 32px);overflow-y:auto;box-shadow:0 18px 60px #0003}.setup-card h2{font-size:32px;margin:4px 0 16px}.setup-card p{font-size:14px;line-height:1.6;color:#586d64}.setup-card fieldset{border:0;margin:24px 0;padding:0}.setup-card legend{font-size:13px;font-weight:700;margin-bottom:10px}.level-options{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.level-options label{position:relative;cursor:pointer}.level-options input{position:absolute;opacity:0;width:1px;height:1px}.level-options span{display:block;padding:16px 8px;border:1px solid #d6e2db;border-radius:10px}.level-options strong,.level-options small{display:block}.level-options small{font-size:11px;color:#586d64;line-height:1.5;margin-top:8px}.level-options input:checked+span{border-color:#115e59;background:#e7f1ec}.level-options input:focus-visible+span{outline:3px solid #7b52c8}.setup-links{display:flex;justify-content:center;gap:24px;margin-top:24px;font-size:13px;color:#115e59}
.arcade{background:radial-gradient(ellipse at 20% 10%,#273359,#040c18 70%);color:#f7fbff;padding:14px}.arcade-panel{width:min(900px,100%);max-height:calc(100dvh - 28px);overflow-y:auto;padding:16px;border:1px solid #43d9ff40;border-radius:16px;background:#081626;box-shadow:0 0 45px #43d9ff12}.arcade-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.arcade-header p{font-size:10px;letter-spacing:2px;color:#43d9ff;margin:0 0 6px}.arcade-header h2{color:#fff;font-size:28px;margin:0 0 12px;letter-spacing:1px}.arcade-tools{display:flex;gap:7px}.arcade button{border:1px solid #43d9ff70;background:#15354b;color:#e9faff;border-radius:9px;padding:10px 12px;min-height:44px;font-size:12px;font-weight:700}.bonus-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:8px 0 12px;font-size:10px;letter-spacing:1px;color:#a9c2d2}.bonus-stats>div{padding:10px;text-align:center;border:1px solid #ffffff16;border-radius:10px;background:#10263b}.bonus-stats strong{display:block;font:800 25px ui-monospace,monospace;color:#43d9ff;letter-spacing:0;margin-top:5px}.space-stage{height:clamp(260px,43dvh,430px);position:relative;overflow:hidden;border:1px solid #43d9ff40;border-radius:12px;background:#030c18}#space{width:100%;height:100%;display:block}.stage-message{position:absolute;inset:0;background:#030c18db;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;text-align:center;padding:20px}.stage-message strong{font-size:clamp(24px,5vw,40px);color:#ffd166}.stage-message span{font-size:18px;color:#a9c2d2}.stage-message b{font:900 64px ui-monospace,monospace;color:#43d9ff}.touch-controls{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:10px;margin-top:14px}.touch-controls button{min-height:58px;font-size:16px;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.touch-controls #fire{background:#79346b;border-color:#f199d5}.touch-controls button:active{filter:brightness(1.4)}.arcade-tip{font-size:11px;color:#a9c2d2;text-align:center;line-height:1.7;margin:12px 0 6px}.arcade-tip span{color:#ffd166}.arcade-links{display:flex;justify-content:center;gap:24px;font-size:12px;color:#a9c2d2}.arcade-links a{padding:8px}.arcade button:focus-visible{outline-color:#ffd166}
@keyframes correct-flash{50%{box-shadow:0 0 0 5px #4ee39a60}}@keyframes wrong-flash{50%{box-shadow:0 0 0 5px #ff627540}}
@media(max-width:600px){.blaster-shell{padding:16px 14px}.game-heading img{width:95px}.game-heading h1{font-size:30px}.game-heading .eyebrow{font-size:9px;letter-spacing:1px}.toolbar{flex-wrap:wrap}.math-panel{padding:16px}.stats>div{padding:10px 3px}.stats strong{font-size:22px}.submit-button{padding:12px 16px}.setup-card{padding:22px 16px}.level-options{gap:5px}.level-options span{padding:14px 4px}.arcade-panel{padding:10px}.arcade-header{flex-wrap:wrap}.arcade-header h2{font-size:24px}.arcade-header p{font-size:9px}.arcade-tools{margin-left:auto}.touch-controls{gap:7px}.touch-controls button{font-size:13px}.bonus-stats strong{font-size:22px}.bonus-stats{font-size:9px}.space-stage{height:clamp(250px,40dvh,360px)}}
@media(prefers-reduced-motion:reduce){.math-panel.correct-flash,.math-panel.wrong-flash{animation:none}}