:root{color-scheme:dark;font-family:ui-rounded,'Trebuchet MS',system-ui,sans-serif;color:#effffa;background:#061c2d}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 15%,#124b51 0,transparent 50%),#061c2d;min-height:100vh}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid #ffffff28;color:inherit;background:#ffffff0b;border-radius:12px;padding:10px 16px;font-weight:700}button:hover{background:#ffffff1a}button:focus-visible,a:focus-visible,select:focus-visible,canvas:focus-visible{outline:3px solid #ffe6a0;outline-offset:4px}button:disabled{opacity:.45;cursor:default}header{max-width:1280px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid #ffffff12}a{color:inherit;text-decoration:none}.back{font-size:14px;color:#b9d1d3}.brand{font-size:12px;letter-spacing:2px;font-weight:900}.brand span{color:#80bbbc;margin-left:10px}header button{font-size:12px}main{max-width:1180px;margin:auto;padding:24px}.title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.eyebrow{font-size:10px;letter-spacing:3px;font-weight:900;color:#76d2c5;margin:0 0 8px}h1{font-size:40px;letter-spacing:-1.5px;margin:0;line-height:1.05}h1 span{color:#ffc565;margin-left:10px}.world{text-align:right}.world span{display:block;color:#7bb5b6;font-size:10px;letter-spacing:2px;margin-bottom:7px}.world strong{font-size:17px}.layout{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:26px;align-items:start}.game{border:1px solid #6de8cf45;border-radius:22px;overflow:hidden;box-shadow:0 24px 80px #0006;background:#092c3b}.hud{display:flex;gap:40px;padding:16px 24px;align-items:center;background:#092631}.hud>div{display:flex;flex-direction:column;gap:3px}.hud small{font-size:9px;letter-spacing:2px;color:#8bbbbb}.hud strong{font-size:22px;font-variant-numeric:tabular-nums}.hud button{margin-left:auto}.stage{position:relative;background:#113e4c;aspect-ratio:720/700}canvas{width:100%;height:100%;display:block;touch-action:none}.overlay{position:absolute;inset:0;display:grid;place-items:center;background:#062b3d77;backdrop-filter:blur(4px);padding:24px}.overlay[hidden]{display:none}.intro-card{text-align:center;width:min(100%,420px);padding:32px 28px;background:linear-gradient(160deg,#113d4ff2,#072535f8);border:1px solid #96ffdd50;border-radius:26px;box-shadow:0 20px 60px #00182188}.island-badge{font-size:9px;color:#ffd48a;letter-spacing:2px;font-weight:800}.intro-card h2{font-size:36px;line-height:1.08;letter-spacing:-1px;margin:20px 0 14px}.intro-card p{color:#bfdfdd;font-size:14px;line-height:1.6}.demo{display:flex;align-items:center;justify-content:center;gap:13px;margin:22px 0}.mini{border-radius:50%;height:54px;width:54px;display:grid;place-items:center;border:2px solid #b2ffe4;font-size:22px;text-shadow:0 2px 4px #003f3d}.half{background:conic-gradient(#53cdb3 50%,#1a535e 0)}.whole{background:#e8b55c;color:#153c43;border-color:#ffda98}.primary{display:block;width:100%;border:0;color:#103a3d;background:linear-gradient(#bcffe1,#79edbc);padding:16px 20px;border-radius:14px;box-shadow:0 5px 0 #318878;font-size:17px}.primary:hover{background:#c4ffe7}.primary span{float:right}.intro-card .overlay-note{font-size:11px;margin-bottom:0}.toast{position:absolute;top:61%;left:50%;transform:translate(-50%,-50%);pointer-events:none;text-align:center;font-size:24px;font-weight:900;color:#fff0b7;text-shadow:0 3px 10px #052735;opacity:0;transition:opacity .15s;width:90%}.toast.visible{opacity:1}.launch-panel{padding:16px 22px 18px;background:#092631}.launch-panel>p{margin:0 0 12px;font-size:9px;letter-spacing:2px;color:#89bfba;font-weight:900;display:flex;justify-content:space-between}.launch-panel>p span{font-size:10px;letter-spacing:0;font-weight:400}.ammo{display:flex;gap:10px}.ammo button{flex:1;position:relative;padding:12px;font-size:23px;background:#113945;border:1px solid #345e68;min-height:62px}.ammo button.selected{background:#246652;border:2px solid #95f6c9;box-shadow:0 0 20px #54eec422}.ammo button small{position:absolute;top:5px;left:8px;font-size:9px;color:#89bdb5}.ammo button .bar{display:block;margin:5px auto 0;height:5px;width:75%;background:#061f30;border-radius:4px;overflow:hidden}.ammo button .bar i{display:block;background:#a4f4ce;height:100%}.aim-controls{display:flex;justify-content:center;gap:9px;margin-top:10px}.aim-controls button{padding:9px 18px}.aim-controls #fire{flex:1;background:#baf9d6;color:#153e3e}.aim-controls span{font-size:8px;opacity:.65;margin-left:8px}aside{padding-top:7px}aside h2{font-size:30px;line-height:1.1;letter-spacing:-.8px;margin:14px 0}aside p{font-size:13px;line-height:1.7;color:#a7ccce}.rule{display:flex;gap:13px;border-top:1px solid #ffffff12;padding:12px 0}.rule>span{font-size:10px;color:#79c3b8;padding-top:5px}.rule p{margin:0;font-size:12px}.rule strong{display:block;color:#e0f5ea;font-size:13px}.equation{margin-top:10px;border:1px solid #6bcda134;background:#32675125;border-radius:12px;padding:14px;color:#bafbdd;font-size:13px;line-height:1.6;min-height:76px}.settings{margin-top:25px}.settings label{display:block;font-size:9px;letter-spacing:2px;color:#86bab9;font-weight:800;margin:15px 0 8px}.settings select{width:100%;padding:12px;background:#123745;color:#eefcf4;border:1px solid #ffffff25;border-radius:10px}.settings p{font-size:11px;margin-top:8px}.settings button{width:100%;font-size:12px}footer{display:flex;justify-content:space-between;gap:20px;margin-top:20px;color:#83a6b0;font-size:10px;line-height:1.7}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(min-width:1000px){.game{max-width:720px}.stage{max-height:600px}canvas{object-fit:fill}}@media(max-width:850px){.layout{grid-template-columns:1fr}.game{max-width:680px;width:100%;margin:auto}aside{display:grid;grid-template-columns:1fr 1fr;gap:24px}.mission h2{font-size:25px}.title-row{max-width:680px;margin:0 auto 20px}main{padding:18px}header{padding:14px 18px}.brand span{display:none}footer{flex-direction:column;gap:3px}.settings{margin:0}}@media(max-width:480px){.brand{font-size:10px;letter-spacing:1px}h1{font-size:31px}.world strong{font-size:12px}.world span{font-size:8px}.hud{gap:22px;padding:12px 16px}.hud strong{font-size:19px}.intro-card{padding:22px 18px}.intro-card h2{font-size:28px}.intro-card p{font-size:12px}.overlay{padding:18px}.island-badge{font-size:8px}.demo{margin:16px 0}.mini{width:44px;height:44px}.launch-panel{padding:12px}.launch-panel>p span{display:none}aside{grid-template-columns:1fr}.mission{display:none}.settings{display:grid;grid-template-columns:1fr 1fr;column-gap:12px}.settings label,.settings select,.settings p,.settings button{grid-column:span 2}main{padding:14px 10px}.game{border-radius:16px}.title-row{padding:3px 5px}.ammo button{min-height:54px;padding:8px}.toast{font-size:19px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

[hidden]{display:none!important}
/* Keep the full aiming surface and shot rack together on laptop displays. */
@media(min-width:851px){.layout{grid-template-columns:minmax(0,min(720px,calc((100dvh - 230px)*1.02857))) 280px;justify-content:center}.game{width:100%;max-width:none}.stage{width:100%;max-height:none;aspect-ratio:720/700}.hud{padding:10px 18px}.hud strong{font-size:19px}.hud button{padding:7px 13px}.launch-panel{padding:10px 14px}.launch-panel>p{margin-bottom:8px}.ammo button{min-height:49px;padding:7px;font-size:21px}.aim-controls{margin-top:7px}.aim-controls button{padding:7px 15px}.title-row{margin-bottom:14px}header{padding-top:12px;padding-bottom:12px}main{padding-top:18px}.stage canvas{width:100%;height:100%}}

.hud button{font-size:12px}

.world-board-menu{margin-bottom:14px;grid-column:1 / -1}.overlay:has(.worldboard-result){overflow:auto;place-items:start center}.intro-card #world-board-result{text-align:left}#world-board-result:empty{display:none}