:root{color-scheme:dark;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#e7efec;background:#0d1412;font-synthesis:none;--muted:#8b9d94;--mint:#c2f8bd;--line:#2b3831;--panel:#15201a}
*{box-sizing:border-box}body{margin:0;min-height:100dvh;background:radial-gradient(ellipse at 48% 42%,#20392a66,transparent 55%),#0d1412}button,a,canvas{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;transition:background .15s,border-color .15s,transform .15s}button:disabled{opacity:.4;cursor:not-allowed}button:hover:not(:disabled){filter:brightness(1.12)}button:active:not(:disabled){transform:translateY(1px)}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid var(--mint);outline-offset:3px}[hidden]{display:none!important}
main{width:100%;max-width:1120px;margin:auto;padding:16px 24px 0}.heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.eyebrow{font-size:9px;font-weight:600;letter-spacing:2px;color:#93b29d;display:flex;align-items:center;gap:7px}.live-dot{width:5px;height:5px;background:var(--mint);border-radius:50%}h1{font-size:28px;line-height:1.3;letter-spacing:-.8px;margin:7px 0 5px;font-weight:600}h1 span{color:var(--mint)}.heading p{font-size:12px;color:var(--muted);margin:0}.icon-button{background:#17231c;border:1px solid var(--line);color:#b7c8bc;padding:8px 11px;border-radius:8px;font-size:11px;white-space:nowrap}
.game-layout{--board-width:min(30vw,calc((100dvh - 275px)/2),320px);display:grid;grid-template-columns:minmax(175px,220px) var(--board-width) minmax(205px,250px);gap:24px;justify-content:center;align-items:start}.left-column,.right-column{display:flex;flex-direction:column;gap:12px;padding-top:20px;min-width:0}.card{border:1px solid var(--line);border-radius:12px;background:linear-gradient(140deg,#1b2820,#141f19);padding:16px}.label{display:flex;align-items:center;justify-content:space-between;color:#bdcdc3;font-size:11px;font-weight:500;letter-spacing:.3px}.label>span{font-size:8px;letter-spacing:1.6px;color:#6f8778}.score{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:34px;letter-spacing:-1px;font-weight:500;color:#e6f5e5;margin:14px 0 10px;font-variant-numeric:tabular-nums}.best{display:flex;justify-content:space-between;color:var(--muted);font-size:10px}.best strong{font-weight:500;color:#c2d3c8}.divider{height:1px;background:var(--line);margin:14px 0}.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}.stats>div{display:flex;flex-direction:column;gap:6px}.stats span{font-size:10px;color:var(--muted)}.stats strong{font-family:ui-monospace,monospace;font-size:23px;font-weight:500}.progress-track{height:3px;background:#2c3d32;border-radius:4px;margin:13px 0 6px;overflow:hidden}.progress-track>div{height:100%;background:var(--mint);width:0;transition:width .2s}.tiny{font-size:9px;color:#83998b}.speed-setting{display:flex;align-items:center;justify-content:space-between;margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.speed-setting button{background:#24352a;border:1px solid #415746;color:#d4e5d6;padding:5px 7px;border-radius:5px;font-size:10px}.speed-setting kbd{height:15px;min-width:15px;font-size:8px;margin:0 0 0 4px}
.hold-card,.next-card{padding:12px 16px}.hold-card canvas{display:block;width:100%;height:54px;object-fit:contain}.hold-card p{margin:0;text-align:center;font-size:9px}.next-card canvas{display:block;width:100%;height:104px;object-fit:contain;margin-top:4px}.queue-caption{display:none}
.board-column{min-width:0}.board-topline{display:flex;align-items:center;justify-content:space-between;font-size:9px;letter-spacing:.4px;color:#91aa9a;height:20px}.board-topline>span:first-child{display:flex;align-items:center;gap:6px}.board-topline i{width:5px;height:5px;background:var(--mint);border-radius:50%}.board-frame{position:relative;padding:6px;border:1px solid #506c57;border-radius:10px;background:#17251b;box-shadow:0 18px 60px #0005,0 0 0 4px #bdeab807;overflow:hidden}#board{display:block;width:100%;height:auto;aspect-ratio:1/2;background:#0f1a14;border-radius:4px;outline:none}.board-bottom{display:flex;justify-content:space-between;align-items:center;gap:5px;min-height:30px;padding:6px 0;font-size:9px;color:#8da492}.board-bottom button{border:0;background:transparent;color:#c7d9cc;font-size:10px;white-space:nowrap;padding:2px}.board-bottom kbd{font-size:8px;height:15px;min-width:15px}
.ai-card{border-color:#476045;background:linear-gradient(155deg,#263c29,#19271c);padding:18px}.ai-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.ai-spark{font-size:28px;color:var(--mint);line-height:1}.ai-pill{font-size:9px;color:#b5d0af;border:1px solid #466442;border-radius:20px;padding:4px 8px;letter-spacing:.3px}.ai-card h2{font-size:18px;line-height:1.4;font-weight:500;margin:16px 0 8px;letter-spacing:-.3px}.ai-card>p{font-size:11px;line-height:1.8;color:#9eb49a;margin:0}.connection{font-size:10px;color:#b6d6a9;margin:18px 0 12px}.ai-button{display:flex;justify-content:space-between;align-items:center;width:100%;border:0;border-radius:7px;background:var(--mint);color:#1f3b24;font-size:11px;font-weight:600;padding:11px 10px}.ai-button kbd{background:#aedda8;color:#315834;border-color:#93c08e;font-size:9px}.auto-jev{width:100%;margin-top:8px;border:1px solid #4b6948;border-radius:7px;background:#263c29;color:#cde1c6;padding:9px 6px;font-size:10px}.auto-jev[aria-pressed="true"]{background:#2f4b30;border-color:#719b63;color:#d2f4c6}.jev-motion{display:flex;flex-direction:column;align-items:flex-start;gap:9px;border-top:1px solid #3a5237;margin-top:16px;padding-top:12px;font-size:10px;color:#a9c39e}.jev-keys{display:flex;gap:4px}.jev-keys kbd{min-width:25px;height:23px}.jev-keys .pressed{background:var(--mint);border-color:var(--mint);color:#203824;transform:translateY(1px)}.ai-card .ai-foot{margin-top:12px;font-size:9px;color:#88a07f}.advice-text{font-size:10px;line-height:1.6;white-space:pre-line;margin-top:12px;color:#c9dfbd}.advice-actions{display:flex;gap:6px;margin-top:9px}.advice-actions button{flex:1;border:1px solid #59794e;border-radius:5px;padding:7px 4px;background:#2a4229;color:#d0e6c7;font-size:9px}
kbd{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 4px;border:1px solid #3b5040;border-radius:4px;background:#1c2c21;color:#a9c2b0;font-family:inherit;font-size:9px;margin-right:3px}.controls-legend{display:flex;justify-content:center;align-items:center;gap:15px;margin:12px 0 0;border-top:1px solid #25362b;padding:10px 0;color:#879e8e;font-size:9px}.controls-legend>span{white-space:nowrap}.legend-title{color:#b4c8ba}.touch-controls{display:none}footer{max-width:1072px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:9px 0;font-size:8px;letter-spacing:1px;color:#698471}footer em{font-style:normal;letter-spacing:0;margin-left:12px;color:#607966}
.overlay{position:absolute;inset:6px;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(#112016e8,#122118ba);backdrop-filter:blur(2px)}.overlay-content{width:100%;padding:18px}.overlay-symbol{display:grid;grid-template-columns:repeat(3,16px);grid-template-rows:repeat(2,16px);gap:3px;width:max-content;margin:0 auto 23px;filter:drop-shadow(0 0 18px #bbf87b20)}.overlay-symbol i{background:#c2f8bd;border-radius:3px;box-shadow:inset 0 1px 0 #fff5}.overlay-symbol i:first-child{grid-column:2}.overlay-symbol i:nth-child(2){grid-column:1}.overlay .eyebrow{justify-content:center;font-size:7px;letter-spacing:1.5px}.overlay h2{font-size:23px;font-weight:500;line-height:1.5;letter-spacing:-.5px;margin:13px 0 6px}.overlay p{font-size:10px;line-height:1.6;color:#91ac98}.primary{display:flex;align-items:center;justify-content:space-between;width:100%;background:var(--mint);color:#233d27;border:0;border-radius:7px;padding:12px 14px;font-size:12px;font-weight:600;margin-top:22px}.overlay small{display:block;margin-top:12px;font-size:9px;color:#79967f}.line-flash{pointer-events:none;position:absolute;inset:0;background:var(--mint);opacity:0}.line-flash.flash{animation:flash .35s ease-out}@keyframes flash{from{opacity:.26}to{opacity:0}}
@media(min-width:761px) and (min-height:650px){body{height:100dvh;display:grid;grid-template-rows:54px minmax(0,1fr)28px}main{min-height:0;height:100%;display:grid;grid-template-rows:76px minmax(0,1fr)32px;gap:8px;padding-top:12px}.heading{margin:0}.controls-legend{margin:0;padding:6px 0}.game-layout{min-height:0}.left-column,.right-column{max-height:100%;overflow:auto;scrollbar-width:thin}footer{width:calc(100% - 48px);padding:5px 0}}
@media(min-width:761px) and (max-height:800px){.card{padding:12px 14px}.score{font-size:29px;margin:10px 0 8px}.divider{margin:10px 0}.stats>div{gap:4px}.stats strong{font-size:20px}.progress-track{margin:10px 0 5px}.speed-setting{margin-top:9px;padding-top:8px}.left-column,.right-column{gap:10px}.hold-card canvas{height:42px}.next-card canvas{height:72px}.ai-card h2{font-size:16px;margin:10px 0 6px}.ai-card>p{font-size:10px;line-height:1.6}.connection{margin:12px 0 9px}.jev-motion{margin-top:12px;padding-top:9px}.ai-card .ai-foot{margin-top:9px}}
@media(max-width:960px){.game-layout{gap:16px;grid-template-columns:minmax(155px,190px) var(--board-width) minmax(190px,225px)}main{padding-left:18px;padding-right:18px}.controls-legend{gap:9px}.legend-title{display:none}}
@media(max-width:760px){main{padding:14px 14px 0}.heading{margin-bottom:14px}.heading h1{font-size:23px}.heading p{font-size:10px}.heading .eyebrow{font-size:8px}.game-layout{grid-template-columns:minmax(0,1fr) minmax(140px,180px);gap:12px;grid-template-rows:auto auto}.board-column{grid-column:1;grid-row:1/3}.left-column{grid-column:2;grid-row:1;padding-top:20px;gap:8px}.right-column{grid-column:2;grid-row:2;padding-top:0}.card{padding:10px}.hold-card{display:none}.next-card canvas{height:58px}.score{font-size:25px;margin:8px 0}.divider{margin:8px 0}.stats>div{gap:3px}.stats strong{font-size:18px}.progress-track{margin:8px 0 5px}.speed-setting{margin-top:7px;padding-top:6px;font-size:9px}.ai-card h2{font-size:13px;margin:8px 0}.ai-card>p,.ai-card .ai-foot{display:none}.ai-spark{font-size:20px}.ai-pill{font-size:8px;padding:3px 5px}.connection{font-size:8px;margin:9px 0}.ai-button,.auto-jev{padding:8px 5px;font-size:9px}.ai-button kbd{display:none}.jev-motion{margin-top:9px;padding-top:8px;font-size:9px;gap:6px}.advice-text{font-size:9px}.advice-actions{flex-direction:column}.board-bottom>span{display:none}.board-bottom{justify-content:flex-end}.touch-controls{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}.touch-controls button{touch-action:none;min-height:33px;background:#203627;border:1px solid #3c5a43;color:#cee4d3;border-radius:5px;font-size:13px}.touch-controls button:nth-last-child(-n+2){grid-column:span 2;font-size:10px}.overlay-content{padding:10px}.overlay h2{font-size:19px}.overlay .eyebrow,.overlay small{display:none}.overlay-symbol{margin-bottom:15px}.primary{padding:11px 8px;font-size:11px;margin-top:16px}.controls-legend{display:none}footer{margin:12px 14px 0}footer em{display:none}}
@media(max-width:400px){.game-layout{grid-template-columns:minmax(0,1fr) 140px;gap:9px}.heading h1{font-size:21px}.heading p{font-size:9px}.card{padding:8px}.label{font-size:10px}.overlay h2{font-size:17px}.overlay p{font-size:9px}.icon-button{font-size:10px;padding:6px 8px}}
@media(min-width:761px) and (max-height:649px){.game-layout{--board-width:230px}main{padding-top:12px}.heading h1{font-size:23px}.heading{margin-bottom:10px}footer{padding:10px 24px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}

/* Match Snake: a full-width play area and a separate decision sidebar. */
@media(min-width:761px){
 .game-layout{--board-width:min(calc((100dvh - 295px)/2),320px);grid-template-columns:minmax(0,1fr) 300px;gap:16px;justify-content:stretch;align-items:stretch}
 .play-arena{display:grid;grid-template-columns:minmax(150px,1fr) minmax(0,1.35fr);gap:22px;min-height:0;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:#121d16}
 .left-column{padding:0;max-height:100%;gap:12px}
 .board-column{width:min(100%,var(--board-width));justify-self:center;align-self:start}
 .right-column{padding:0;max-height:100%;gap:14px}
 .left-column .card{background:transparent;border:0;border-radius:0;padding:10px 0}
 .left-column .hold-card,.left-column .next-card{border-top:1px solid var(--line)}
 .left-column .score-card{padding-top:2px}.left-column .score{font-size:36px;margin:15px 0 12px}
 .right-column .ai-card{background:#15231a;border-color:#354d36;padding:20px}
 .ai-card h2{font-size:20px;margin-top:18px}.ai-card>p{font-size:12px;line-height:1.8}
 .ai-button{padding:12px}.auto-jev{padding:10px}.connection{font-size:11px}
 .jev-motion{flex-direction:row;align-items:center;justify-content:space-between;gap:8px}
 .advice-text{font-size:11px}.ai-card .ai-foot{font-size:10px}
}
@media(min-width:761px) and (max-width:960px){
 .game-layout{grid-template-columns:minmax(0,1fr) 250px;gap:12px}
 .play-arena{grid-template-columns:minmax(125px,.8fr) minmax(0,1.2fr);padding:12px;gap:14px}
 .right-column .ai-card{padding:15px}.ai-card h2{font-size:17px}
}
@media(min-width:761px) and (max-height:749px){
 .play-arena{padding-top:10px;padding-bottom:10px}.left-column{gap:6px}
 .left-column .score{font-size:29px;margin:9px 0}.left-column .card{padding:8px 0}
 .right-column .ai-card{padding:15px}.ai-card h2{font-size:17px;margin-top:12px}.ai-card>p{font-size:11px}
 .ai-button{padding:9px}.auto-jev{padding:8px}
}
@media(min-width:761px) and (max-height:649px){.game-layout{--board-width:220px}}
@media(max-width:760px){.play-arena{display:contents}}

@media(min-width:761px) and (max-width:800px) and (min-height:650px){body{grid-template-rows:88px minmax(0,1fr)28px}.game-layout{--board-width:min(calc((100dvh - 329px)/2),320px)}}
@media(min-width:761px) and (min-height:650px){main{grid-template-rows:88px minmax(0,1fr)32px}.game-layout{--board-width:min(calc((100dvh - 315px)/2),320px)}}
@media(min-width:761px) and (max-width:960px) and (min-height:650px){main{grid-template-rows:140px minmax(0,1fr)32px}.game-layout{--board-width:min(calc((100dvh - 367px)/2),320px)}}
@media(min-width:761px) and (max-width:800px) and (min-height:650px){.game-layout{--board-width:min(calc((100dvh - 401px)/2),320px)}}
@media(min-width:761px) and (min-height:650px){main{grid-template-rows:110px minmax(0,1fr)32px}.game-layout{--board-width:min(calc((100dvh - 337px)/2),320px)}}
@media(min-width:761px) and (max-width:800px) and (min-height:650px){.game-layout{--board-width:min(calc((100dvh - 371px)/2),320px)}}