:root{color-scheme:dark;--bg:#10121a;--card:#191c27;--line:#2c303e;--muted:#9097aa;--lime:#bcfa56;--pink:#ff73ae;--blue:#75c9ff;--orange:#ffb56a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#f7f8fc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-height:100vh}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,canvas:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.ambient{position:absolute;border-radius:50%;filter:blur(100px);pointer-events:none;z-index:-1;opacity:.08}.ambient-one{background:var(--lime);width:500px;height:500px;top:180px;left:-250px}.ambient-two{background:var(--pink);width:350px;height:350px;top:350px;right:0}.site-header,main,footer{max-width:1200px;margin:auto;padding-left:40px;padding-right:40px}.site-header{height:102px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ffffff0d}.brand{display:flex;gap:10px;align-items:center;color:#fafafa;text-decoration:none;font-weight:800;font-size:29px;letter-spacing:-1.5px}.brand span{font-size:11px;align-self:flex-start;margin:4px 0 0 -5px}.edition{font:600 10px ui-monospace,monospace;letter-spacing:2px;color:#a5acba;display:flex;align-items:center;gap:10px}.edition i,.live-dot{width:6px;height:6px;background:var(--lime);border-radius:50%;display:inline-block}.sound-button{background:#ffffff05;border:1px solid var(--line);color:#adb4c6;border-radius:9px;padding:9px 13px;font-size:12px}.sound-button span{color:var(--lime);margin-left:14px;font-size:18px}.intro{display:flex;justify-content:space-between;align-items:center;margin:43px 0 30px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:700;color:var(--lime);margin:0 0 12px}h1{font-size:clamp(36px,4.5vw,56px);letter-spacing:-2.6px;line-height:1.09;margin:0;font-weight:850}h1 span{color:var(--lime)}.intro-note{font-size:14px;line-height:1.8;color:var(--muted);position:relative;margin-right:32px}.intro-note span{display:block;text-align:right;font-size:38px;color:var(--pink);line-height:1}.arcade-layout{display:grid;grid-template-columns:minmax(0,1fr) 326px;gap:24px;align-items:start}.game-card{border:1px solid #363b49;border-radius:22px;overflow:hidden;background:var(--card);box-shadow:0 20px 60px #0003}.game-top{display:flex;gap:25px;align-items:center;justify-content:space-between;padding:23px 24px}.game-title{display:flex;align-items:center;gap:13px;margin-right:auto}.pixel-icon{font-size:34px;color:var(--lime)}.game-title h2{font-size:16px;letter-spacing:2px;margin:0}.game-title h2 span{background:#bcfa5619;color:var(--lime);font-size:9px;letter-spacing:1.5px;border:1px solid #bcfa5630;border-radius:5px;padding:4px 5px;vertical-align:middle;margin-left:5px}.game-title p{font-size:10px;color:var(--muted);margin:7px 0 0}.score-box,.best-box{text-align:right;flex-shrink:0}.score-box span,.best-box span{display:block;font:600 8px ui-monospace,monospace;letter-spacing:1.4px;color:var(--muted);margin-bottom:5px}.score-box strong,.best-box strong{font:700 27px ui-monospace,monospace;letter-spacing:-1px;color:var(--lime)}.best-box strong{font-size:19px;color:#f5f7fb}.board-wrap{position:relative;margin:0 18px;border:1px solid #323847;border-radius:13px;overflow:hidden;background:#0e121b;aspect-ratio:1;isolation:isolate}canvas{display:block;width:100%;height:100%;touch-action:none}.game-overlay{position:absolute;inset:0;background:#0d121de8;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:20px;text-align:center;backdrop-filter:blur(3px)}.hidden{display:none!important}.badge{font:600 9px ui-monospace,monospace;letter-spacing:1.6px;color:var(--pink);border:1px solid #ff73ae3a;background:#ff73ae0c;padding:8px 10px;border-radius:5px}.snake-art{display:flex;align-items:end;height:89px;margin-bottom:22px;transform:rotate(-8deg);filter:drop-shadow(0 0 17px #bcfa5630)}.snake-art span{width:27px;height:27px;background:var(--lime);border-radius:7px;margin-right:3px}.snake-art span:nth-child(1){height:22px;background:#63af67}.snake-art span:nth-child(2){background:#79c865}.snake-art span:nth-child(3){background:#93e15b}.snake-art span:nth-child(4){margin-bottom:16px}.snake-art .snake-head{height:36px;width:36px;margin-bottom:24px;display:flex;gap:8px;align-items:center;justify-content:center;transform:rotate(8deg)}.snake-head i{width:5px;height:7px;background:#141922;border-radius:4px}h3{font-size:35px;letter-spacing:-1.4px;margin:0 0 12px}.game-overlay>p{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 24px}.primary{border:0;background:var(--lime);color:#162018;border-radius:10px;min-height:49px;padding:14px 25px;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:space-between;gap:36px;box-shadow:0 6px 26px #bcfa5614;transition:transform .15s,background .15s}.primary:hover{background:#d0ff87;transform:translateY(-1px)}.primary span{font-size:20px;font-weight:500}.game-overlay>small{font:10px ui-monospace,monospace;color:#737e94;margin-top:20px}.game-bottom{padding:15px 24px;display:flex;align-items:center;justify-content:space-between}.game-bottom p{font:600 9px ui-monospace,monospace;letter-spacing:1.5px;color:#b0b7c6;margin:0;display:flex;align-items:center;gap:9px}.game-bottom button{color:#bbc2d0;background:transparent;border:1px solid var(--line);border-radius:7px;padding:7px 11px;font-size:12px}.game-bottom button span{font-size:10px;margin-left:4px}.ranking-card{padding:26px 23px 20px;border:1px solid var(--line);background:linear-gradient(160deg,#202331,#181b25);border-radius:20px}.ranking-heading{display:flex;align-items:center;gap:12px}.trophy{font-size:35px;color:var(--orange);align-self:flex-start;line-height:1}.ranking-heading .eyebrow{font-size:7px;letter-spacing:1.1px;color:var(--orange);margin-bottom:8px}.ranking-heading h2{font-size:21px;letter-spacing:-.8px;margin:0;line-height:1.2}.ranking-heading h2 span{color:var(--orange)}.ranking-note{font-size:11px;line-height:1.7;color:var(--muted);margin:17px 0 21px}.ranking-columns{display:flex;justify-content:space-between;font:600 8px ui-monospace,monospace;letter-spacing:1.4px;color:#8993a8;padding-bottom:12px;border-bottom:1px solid var(--line)}#ranking{list-style:none;padding:0;margin:0;max-height:392px;overflow:auto;scrollbar-width:thin;scrollbar-color:#444c60 transparent}#ranking li:not(.ranking-empty){display:flex;align-items:center;gap:12px;border-bottom:1px solid #ffffff06;padding:14px 0;font-size:12px}#ranking .rank-index{font:11px ui-monospace,monospace;color:#697389;width:24px;flex-shrink:0}#ranking li:nth-child(1) .rank-index{color:var(--lime)}#ranking li:nth-child(2) .rank-index{color:var(--pink)}#ranking li:nth-child(3) .rank-index{color:var(--blue)}.player-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.player-points{font:600 13px ui-monospace,monospace;color:var(--lime)}.ranking-empty{padding:34px 12px;text-align:center;font-size:12px;line-height:1.8;color:var(--muted)}.ranking-status{color:#79849a;font-size:9px;margin-top:17px;line-height:1.6}.text-button{display:flex;justify-content:space-between;align-items:center;width:100%;background:transparent;border:0;color:#cbd1dc;font-size:10px;padding:6px 0}.text-button span{font-size:17px}.how-to{padding:27px 12px 0}.how-to>.eyebrow{color:#8c95a9;letter-spacing:1.6px;font-size:8px;margin-bottom:19px}.how-to>div{display:flex;gap:13px;margin:0 0 17px}.how-to>div>span{font:10px ui-monospace,monospace;color:var(--pink);padding-top:4px}.how-to p{font-size:10px;line-height:1.8;color:var(--muted);margin:0}.how-to strong{display:block;color:#d3d8e2;font-size:11px;font-weight:600}.controls{width:calc(100% - 350px);margin:18px 0 38px;text-align:center}.controls>p{display:flex;gap:6px;align-items:center;justify-content:center;font-size:10px;color:#838ea3;margin:0}.controls>p>span{display:flex;gap:3px}.controls b{font-weight:500;margin-left:6px}.controls em{font-style:normal;margin:0 10px}kbd{border:1px solid #33394a;background:#191d29;border-bottom-width:2px;min-width:21px;padding:4px 6px;border-radius:4px;font:10px ui-monospace,monospace;color:#a7b0c2}.dpad,.mobile-note{display:none}footer{border-top:1px solid #ffffff0d;display:flex;align-items:center;justify-content:space-between;padding-top:24px;padding-bottom:32px;color:#757f94;font-size:10px}.footer-dot{color:var(--lime);margin:0 12px}footer b{color:var(--pink);font-size:22px;margin-left:12px;vertical-align:middle}.final-score{display:flex;align-items:baseline;gap:9px;color:var(--lime);margin:0 0 17px}.final-score strong{font:700 54px ui-monospace,monospace;letter-spacing:-3px}.final-score span{font-size:12px}#score-form{max-width:310px;width:100%;display:flex;flex-direction:column;gap:9px}#score-form label{font-size:11px;color:#c7cedc;text-align:left}#player-name{width:100%;background:#202535;border:1px solid #434c60;border-radius:9px;padding:13px 14px;font-size:14px;color:#f6f8fc}#score-form small{font-size:9px;color:var(--muted);text-align:left;margin-bottom:7px}#score-form button{gap:10px}#save-status{font-size:12px;max-width:300px;margin:14px 0;line-height:1.5}.error{color:var(--pink)!important}#start-error:empty{display:none}#start-error{margin:13px 0 0;font-size:11px;max-width:290px}@media(min-width:1500px){.site-header,main,footer{max-width:1260px}.arcade-layout{grid-template-columns:minmax(0,1fr) 350px}.controls{width:calc(100% - 374px)}}@media(max-width:900px){.site-header,main,footer{padding-left:22px;padding-right:22px}.arcade-layout{grid-template-columns:minmax(0,1fr) 270px;gap:16px}.game-top{gap:13px;padding:18px 16px}.game-title p{display:none}.best-box{display:none}.board-wrap{margin:0 12px}h3{font-size:29px}.game-overlay{padding:16px}.snake-art{height:60px;margin-bottom:15px}.game-overlay>p{font-size:12px;margin-bottom:18px}.ranking-card{padding:23px 18px}.ranking-heading h2{font-size:18px}.ranking-heading .eyebrow{font-size:6px}.trophy{font-size:30px}.controls{width:calc(100% - 286px)}.edition{font-size:8px;letter-spacing:1.2px}.intro-note{font-size:12px;margin-right:0}#game-over .badge{font-size:7px}#game-over h3{margin:12px 0 0}.final-score{margin-bottom:8px}.final-score strong{font-size:39px}}
@media(max-width:700px){.site-header{height:78px}.brand{font-size:26px}.brand img{width:28px;height:28px}.edition{display:none}.sound-button{font-size:10px}.intro{margin:30px 0 25px}.intro .eyebrow{font-size:8px;letter-spacing:1.2px}h1{font-size:40px;letter-spacing:-2px}.intro-note{display:none}.arcade-layout{display:flex;flex-direction:column;gap:20px}.game-card{width:100%;border-radius:17px}.game-top{padding:17px 16px}.game-title p{display:block;font-size:8px}.score-box strong{font-size:24px}.board-wrap{margin:0 10px;border-radius:10px}.game-overlay>small{font-size:9px}.game-bottom{padding:13px 17px}.game-bottom p{font-size:8px}.game-overlay{padding:15px}.badge{font-size:8px;letter-spacing:1px}.snake-art{height:72px}.game-overlay h3{font-size:30px}.side-panel{width:100%;display:flex;flex-direction:column}.ranking-card{padding:23px;border-radius:17px}.ranking-heading h2{font-size:24px}.ranking-heading .eyebrow{font-size:8px}.ranking-note{font-size:11px}.ranking-card #ranking{max-height:270px}.how-to{padding:23px 9px 0}.controls{width:100%;display:flex;flex-direction:column;margin:17px 0 27px}.controls>p{display:none}.dpad{display:grid;grid-template-columns:repeat(3,49px);gap:7px;justify-content:center;order:-1}.dpad button{width:49px;height:43px;background:#252b3b;border:1px solid #3d465b;color:var(--lime);border-radius:9px;font-size:22px;touch-action:manipulation}.dpad button:first-child{grid-column:2}.dpad button:nth-child(2){grid-column:1}.mobile-note{display:block;font-size:10px;color:var(--muted);margin-top:12px}footer{font-size:9px;gap:15px;align-items:flex-start;padding-top:19px}footer>span:last-child{max-width:130px;text-align:right;line-height:1.7}footer b{display:none}main{display:flex;flex-direction:column}.controls{order:2}.arcade-layout{display:contents}.game-card{order:1}.side-panel{order:3;margin-bottom:28px}.intro{order:0}#game-over h3{font-size:28px}.final-score strong{font-size:43px}}
@media(max-width:380px){.site-header,main,footer{padding-left:12px;padding-right:12px}.game-title p{display:none}.game-overlay h3{font-size:26px}.game-overlay>p{margin-bottom:12px}.snake-art{height:56px}.game-overlay>small{margin-top:13px}.badge{font-size:7px}#game-over .badge{display:none}#game-over h3{font-size:24px;margin:0}.final-score{margin-bottom:6px}.final-score strong{font-size:35px}#score-form{gap:7px}#score-form button{min-height:44px;padding:11px 16px}#save-status{margin:7px 0;font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}.ambient{display:none}}
@media(min-width:701px){.board-wrap{width:calc(100% - 36px);max-width:min(576px,calc(100svh - 210px));margin-left:auto;margin-right:auto}}
@media(max-width:700px){.game-overlay{overflow-y:auto;justify-content:safe center;padding:12px}.game-overlay .snake-art{height:48px;margin-bottom:12px}.game-overlay h3{font-size:27px;margin-bottom:9px}.game-overlay>p{margin-bottom:12px}.game-overlay>small{margin-top:12px}#game-over .badge{display:none}#game-over h3{font-size:25px;margin:0 0 3px}#game-over .final-score{margin:0 0 9px}#game-over .final-score strong{font-size:36px}#score-form{gap:6px;max-width:285px}#score-form label{font-size:10px}#player-name{padding:10px 12px;font-size:13px}#score-form small{font-size:8px;margin-bottom:4px}#score-form .primary{min-height:43px;padding:10px 16px;font-size:11px}#save-status{font-size:10px;margin:8px 0}#start-error{font-size:9px;margin:8px 0 0}}
/* Full-width live-play layout, with a square board sized to the available screen. */
.arcade-layout{display:block}.game-card{width:100%}.board-wrap{width:calc(100% - 36px);max-width:min(calc(100% - 36px),78svh);margin:0 auto}.game-top{gap:14px}.game-title p{color:var(--muted)}
.game-actions{padding:14px 24px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid #ffffff0b}.game-actions>div{min-width:0}.game-actions p{margin:0}.action-kicker{font:700 8px ui-monospace,monospace;letter-spacing:1.5px;color:var(--pink);margin-bottom:6px!important}.game-actions #mode-label{font-size:11px;color:var(--muted)}.game-actions .primary{min-height:45px;min-width:150px;padding:12px 17px;gap:18px;font-size:12px}.end-note{font-size:11px;color:var(--muted);margin:0 0 12px}.controls{width:100%;margin:18px 0 30px}.controls>p{display:flex}.mobile-note{display:none}
@media(min-width:701px){.board-wrap{width:calc(100% - 36px);max-width:min(calc(100% - 36px),78svh);margin-left:auto;margin-right:auto}}
@media(max-width:700px){.site-header,main,footer{padding-left:18px;padding-right:18px}.arcade-layout{display:block}.board-wrap{width:calc(100% - 24px);max-width:78svh}.game-top{gap:8px;padding:16px 13px}.game-title{gap:8px}.pixel-icon{font-size:26px}.game-title h2{font-size:12px;letter-spacing:1px}.game-title p{font-size:9px}.score-box,.best-box{min-width:54px;padding:8px 7px}.score-box span,.best-box span{font-size:6px;letter-spacing:.7px}.score-box strong,.best-box strong{font-size:14px}.game-bottom{padding:12px 15px}.game-bottom p{font-size:7px;letter-spacing:.8px}.game-bottom button{padding:6px 8px;font-size:10px}.game-actions{padding:12px 15px 16px;gap:9px}.game-actions #mode-label{font-size:9px;line-height:1.5}.action-kicker{font-size:7px}.game-actions .primary{min-width:124px;min-height:42px;padding:10px 12px;gap:10px;font-size:10px}.controls{width:100%;display:flex;flex-direction:column;margin:17px 0 27px}.controls>p{display:none}.mobile-note{display:block;color:#838ea3;font-size:9px;text-align:center;margin-top:12px}.game-overlay{overflow-y:auto;justify-content:center;padding:14px}.game-overlay h3{font-size:25px}.final-score strong{font-size:34px}}
@media(max-width:380px){.site-header,main,footer{padding-left:12px;padding-right:12px}.game-title p{display:block}.game-actions{align-items:flex-start;flex-direction:column}.game-actions .primary{align-self:stretch;justify-content:center}.board-wrap{width:calc(100% - 20px);max-width:78svh}}