.combo-2048{--combo-accent:#61ddc5;--combo-accent-bright:#b6ffed;--combo-bg:#0b1215;--combo-panel:#142126;--combo-ink:#f4f1e8;--combo-muted:#819398;width:100%;min-height:min(920px,100svh - 96px);color:var(--combo-ink);background:radial-gradient(circle at 50% 42%,color-mix(in srgb,var(--combo-accent)10%,transparent),transparent 34%),radial-gradient(circle at 12% 100%,#f4f1e80b,transparent 30%),repeating-linear-gradient(135deg,#ffffff05 0 1px,transparent 1px 15px),var(--combo-bg);isolation:isolate;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;border-radius:clamp(18px,3vw,34px);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;position:relative;overflow:clip}.combo-2048-modal{z-index:60;background:#0b1215;position:fixed;inset:0;overflow:auto}.combo-2048-modal .combo-2048{border-radius:0;min-height:100svh}.combo-2048--glass{--combo-accent:#b9a7ff;--combo-accent-bright:#f0e8ff;--combo-bg:#100e19;--combo-panel:#211d35;--combo-muted:#958ead}.combo-2048--arcade{--combo-accent:#ffcf57;--combo-accent-bright:#fff0af;--combo-bg:#160d15;--combo-panel:#2a1628;--combo-muted:#a9879e}.combo-2048 *,.combo-2048 :before,.combo-2048 :after{box-sizing:border-box}.combo-2048 button{min-width:44px;min-height:44px;color:inherit;font:inherit;cursor:pointer;border:0}.combo-layout{--combo-feedback:var(--combo-accent);--combo-feedback-bright:var(--combo-accent-bright);width:min(100%,1380px);min-height:inherit;padding:max(18px,env(safe-area-inset-top))clamp(18px,4vw,58px)max(16px,env(safe-area-inset-bottom));grid-template-rows:auto minmax(0,1fr) auto;gap:12px;margin-inline:auto;display:grid}.combo-layout[data-combo-tier=surge]{--combo-feedback:#78eaff;--combo-feedback-bright:#d9faff}.combo-layout[data-combo-tier=overdrive]{--combo-feedback:#ffc467;--combo-feedback-bright:#fff0b5}.combo-layout[data-combo-tier=reactor]{--combo-feedback:#ff7396;--combo-feedback-bright:#ffd0dc}.combo-hud{grid-template-columns:minmax(190px,1fr) auto minmax(190px,1fr);align-items:center;gap:clamp(18px,4vw,64px);display:grid}.combo-brand small{color:var(--combo-muted);letter-spacing:.2em;margin-bottom:3px;font-size:.58rem;font-weight:800;display:block}.combo-brand h1{letter-spacing:-.055em;margin:0;font-size:clamp(1.4rem,2.5vw,2.1rem);font-weight:920;line-height:1}.combo-brand h1 span{color:var(--combo-accent);font-weight:600}.combo-brand p{max-width:42rem;color:color-mix(in srgb,var(--combo-muted)86%,#d9e6e2);margin:7px 0 0;font-size:clamp(.7rem,1.2vw,.82rem);line-height:1.5}.combo-hud-metrics{grid-template-columns:repeat(3,minmax(78px,112px));gap:clamp(12px,2vw,30px);display:grid}.combo-metric{text-align:center;gap:2px;display:grid}.combo-metric span,.combo-chain>span,.combo-move-count span{color:var(--combo-muted);letter-spacing:.16em;font-size:.56rem;font-weight:800}.combo-metric strong{font-variant-numeric:tabular-nums;text-overflow:ellipsis;white-space:nowrap;font-size:clamp(1rem,2vw,1.45rem);overflow:hidden}.combo-metric strong.is-updating{animation:.26s cubic-bezier(.2,.9,.3,1.25) combo-metric-pop}.combo-hud-actions{justify-content:flex-end;gap:8px;display:flex}.combo-hud-actions button{letter-spacing:.09em;background:#ffffff09;border:1px solid #ffffff1a;border-radius:999px;padding-inline:15px;font-size:.62rem;font-weight:800;transition:border-color .14s,background-color .14s,transform .14s}.combo-hud-actions button:last-child{border-color:color-mix(in srgb,var(--combo-accent)45%,transparent);color:#10191b;background:var(--combo-accent)}.combo-hud-actions button:hover{border-color:color-mix(in srgb,var(--combo-accent)65%,transparent);background-color:color-mix(in srgb,var(--combo-accent)13%,transparent)}.combo-hud-actions button:last-child:hover{background-color:var(--combo-accent-bright)}.combo-hud-actions button:active{transform:scale(.96)}.combo-hud-actions button:focus-visible,.combo-game-over__share:focus-visible,.combo-game-over__restart:focus-visible,.combo-direction-controls button:focus-visible,.combo-faq-link:focus-visible{outline:2px solid var(--combo-accent);outline-offset:3px}.combo-personal-best{color:color-mix(in srgb,var(--combo-muted)84%,#d8e3df);letter-spacing:.08em;text-wrap:balance;justify-content:center;align-items:center;gap:clamp(14px,3vw,34px);font-size:.57rem;font-weight:800;display:flex}.combo-personal-best>span:first-child{color:var(--combo-accent)}.combo-personal-best strong{color:var(--combo-ink);font-variant-numeric:tabular-nums}.combo-faq-link{min-width:44px;min-height:44px;color:var(--combo-muted);background:#ffffff09;border:1px solid #ffffff17;border-radius:999px;padding-inline:12px;font-size:.58rem;font-weight:800;transition:border-color .14s,background-color .14s,color .14s,transform .14s}.combo-faq-link:hover{border-color:color-mix(in srgb,var(--combo-accent)52%,transparent);color:var(--combo-accent-bright);background:color-mix(in srgb,var(--combo-accent)12%,transparent)}.combo-faq-link:active{transform:scale(.96)}.combo-stage{flex-direction:column;justify-content:center;align-items:center;min-height:0;display:flex}.combo-live-event{z-index:3;background:color-mix(in srgb,var(--combo-bg)84%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid #ffffff14;border-radius:999px;align-items:center;gap:8px;min-height:30px;margin-bottom:-12px;padding:7px 13px;display:flex;position:relative;box-shadow:0 8px 24px #0000002e}.combo-live-event i{background:var(--combo-muted);border-radius:50%;width:6px;height:6px}.combo-live-event span{color:color-mix(in srgb,var(--combo-muted)82%,#d3e2de);letter-spacing:.16em;font-size:.52rem;font-weight:850}.combo-live-event strong{letter-spacing:.05em;text-overflow:ellipsis;white-space:nowrap;max-width:min(52vw,360px);font-size:.66rem;font-weight:800;animation:.34s cubic-bezier(.2,.9,.3,1.15) combo-event-hit;overflow:hidden}.combo-live-event.is-hot{border-color:color-mix(in srgb,var(--combo-feedback)46%,transparent);color:var(--combo-feedback-bright);box-shadow:0 8px 24px #0000002e,0 0 26px color-mix(in srgb,var(--combo-feedback)12%,transparent)}.combo-live-event.is-hot i{background:var(--combo-feedback);box-shadow:0 0 12px var(--combo-feedback)}.combo-board-shell{width:min(72svh,680px,82vw);margin-inline:auto;position:relative}.combo-board-interaction{aspect-ratio:1;touch-action:none;-webkit-user-select:none;user-select:none;border-radius:32px;outline:none;width:100%;position:relative}.combo-board-interaction:after{z-index:2;content:"";pointer-events:none;border:2px solid #0000;border-radius:20px;transition:border-color .14s,box-shadow .14s;position:absolute;inset:6.5% 5.5% 8%}.combo-board-interaction:focus-visible:after{border-color:var(--combo-accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--combo-bg)72%,transparent),0 0 22px color-mix(in srgb,var(--combo-accent)24%,transparent)}.combo-board-canvas-wrap,.combo-three-canvas{width:100%;height:100%}.combo-three-canvas{pointer-events:none;filter:drop-shadow(0 30px 34px #00000057);display:block}.combo-three-canvas.is-hidden{display:none}.combo-score-burst{z-index:5;top:var(--combo-burst-y,50%);left:var(--combo-burst-x,50%);border:1px solid color-mix(in srgb,var(--combo-feedback)48%,transparent);min-width:82px;color:var(--combo-feedback-bright);background:color-mix(in srgb,var(--combo-bg)76%,transparent);box-shadow:0 8px 20px #00000057,0 0 18px color-mix(in srgb,var(--combo-feedback)18%,transparent);pointer-events:none;text-align:center;text-shadow:0 2px 10px #000000d1,0 0 22px color-mix(in srgb,var(--combo-feedback)72%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:12px;place-items:center;gap:1px;padding:5px 9px 6px;animation:.72s cubic-bezier(.16,1,.3,1) forwards combo-score-burst;display:grid;position:absolute;transform:translate(-50%,-50%)}.combo-score-burst strong{font-variant-numeric:tabular-nums;letter-spacing:-.045em;font-size:1.2rem;font-weight:950;line-height:1}.combo-score-burst span{color:var(--combo-feedback);letter-spacing:.13em;white-space:nowrap;font-size:.47rem;font-weight:900}.combo-score-burst--surge strong{font-size:1.3rem}.combo-score-burst--overdrive strong{font-size:1.4rem}.combo-score-burst--reactor strong{font-size:1.55rem}.combo-swipe-hint{color:color-mix(in srgb,var(--combo-muted)80%,transparent);letter-spacing:.14em;white-space:nowrap;font-size:.52rem;font-weight:800;position:absolute;bottom:4%;right:50%;transform:translate(50%)}.combo-game-over{z-index:4;border:1px solid color-mix(in srgb,var(--combo-accent)48%,transparent);text-align:center;background:color-mix(in srgb,var(--combo-bg)88%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:28px;place-content:center;gap:7px;padding:24px;display:grid;position:absolute;inset:13%;box-shadow:0 24px 80px #0000006b}.combo-game-over small{color:var(--combo-muted);letter-spacing:.18em;font-size:.57rem;font-weight:800}.combo-game-over strong{color:var(--combo-accent-bright);letter-spacing:-.055em;font-size:clamp(1.8rem,5vw,3.2rem);font-weight:900}.combo-game-over span{color:var(--combo-muted);font-size:.75rem}.combo-game-over__actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:min(100%,280px);margin:12px auto 0;display:grid}.combo-game-over .combo-game-over__share,.combo-game-over .combo-game-over__restart{letter-spacing:.08em;border-radius:999px;width:100%;padding:11px 22px;font-size:.74rem;font-weight:900;transition:background-color .14s,box-shadow .14s,transform .14s}.combo-game-over .combo-game-over__share{border:1px solid color-mix(in srgb,var(--combo-accent)50%,transparent);color:var(--combo-accent-bright);background:color-mix(in srgb,var(--combo-accent)10%,transparent)}.combo-game-over .combo-game-over__restart{color:#10191b;background:var(--combo-accent);box-shadow:0 10px 28px color-mix(in srgb,var(--combo-accent)22%,transparent)}.combo-game-over__share:hover{background:color-mix(in srgb,var(--combo-accent)20%,transparent)}.combo-game-over__share:disabled{cursor:wait;opacity:.62}.combo-game-over__restart:hover{background:var(--combo-accent-bright);box-shadow:0 12px 34px color-mix(in srgb,var(--combo-accent)30%,transparent)}.combo-game-over__share:active,.combo-game-over__restart:active{transform:scale(.96)}.combo-direction-controls{grid-template-rows:44px;grid-template-columns:repeat(4,44px);justify-content:center;gap:5px;margin-top:-15px;display:grid}.combo-direction-controls button{color:var(--combo-muted);background:#ffffff09;border:1px solid #ffffff17;border-radius:13px;place-items:center;font-size:1rem;transition:color .12s,background-color .12s,transform .12s;display:grid}.combo-direction-controls button:hover{color:var(--combo-accent-bright);background:color-mix(in srgb,var(--combo-accent)11%,transparent)}.combo-direction-controls button:active{transform:scale(.9)}.combo-direction-controls .is-up{grid-area:1/1}.combo-direction-controls button:nth-child(2){grid-area:1/2}.combo-direction-controls button:nth-child(3){grid-area:1/3}.combo-direction-controls button:nth-child(4){grid-area:1/4}.combo-footer{justify-content:center;align-items:end;gap:clamp(32px,7vw,84px);display:flex}.combo-chain{gap:7px;width:min(42vw,360px);display:grid}.combo-energy-track{background:#ffffff12;border-radius:999px;width:100%;height:5px;position:relative;overflow:hidden}.combo-energy-track i{width:var(--combo-energy,16%);border-radius:inherit;background:linear-gradient(90deg,var(--combo-feedback),var(--combo-feedback-bright));box-shadow:0 0 14px color-mix(in srgb,var(--combo-feedback)64%,transparent);transition:width .24s cubic-bezier(.22,1,.36,1);position:absolute;inset:0 auto 0 0}.combo-move-count{text-align:right;gap:2px;display:grid}.combo-move-count strong{font-variant-numeric:tabular-nums;font-size:1.15rem}.combo-css-board{background:var(--combo-panel);border-radius:24px;grid-template-columns:repeat(4,1fr);gap:8px;width:84%;height:84%;margin:8%;padding:10px;display:grid}.combo-css-tile{--combo-tile-top:color-mix(in srgb,var(--combo-accent)92%,white 8%);--combo-tile-bottom:color-mix(in srgb,var(--combo-accent)72%,black 28%);--combo-tile-ink:#0f1a1d;color:var(--combo-tile-ink);background:linear-gradient(180deg,#ffffff38,transparent 42%),linear-gradient(180deg,var(--combo-tile-top),var(--combo-tile-bottom));text-shadow:0 1px #ffffff24;border-radius:14px;place-items:center;font-size:clamp(1rem,5vw,2.5rem);font-weight:900;display:grid;position:relative;overflow:hidden;box-shadow:inset 0 -8px #00000024,0 10px 20px #00000038}.combo-css-tile:before{content:"";pointer-events:none;background:linear-gradient(120deg,#ffffff3d,#0000 38%),linear-gradient(#ffffff1a,#0000 46%);position:absolute;inset:0}.combo-css-tile.is-empty{--combo-tile-ink:transparent;background:#ffffff0f;box-shadow:inset 0 1px #ffffff0a}.combo-css-tile.is-empty:before{display:none}.combo-css-tile--tier-1{--combo-tile-top:#7df8ea;--combo-tile-bottom:#37cad9}.combo-css-tile--tier-2{--combo-tile-top:#71f3ed;--combo-tile-bottom:#28c3df}.combo-css-tile--tier-3{--combo-tile-top:#68eaf2;--combo-tile-bottom:#34bce9}.combo-css-tile--tier-4{--combo-tile-top:#6fe5f3;--combo-tile-bottom:#3bb3ea}.combo-css-tile--tier-5{--combo-tile-top:#7fefcf;--combo-tile-bottom:#2bc68f}.combo-css-tile--tier-6{--combo-tile-top:#a8f4b7;--combo-tile-bottom:#50cc73}.combo-css-tile--tier-7{--combo-tile-top:#ffe186;--combo-tile-bottom:#ffb648}.combo-css-tile--tier-8{--combo-tile-top:#ffd47c;--combo-tile-bottom:#ff9456}.combo-css-tile--tier-9{--combo-tile-top:#ffb890;--combo-tile-bottom:#ff7266}.combo-css-tile--tier-10{--combo-tile-top:#ffb0b2;--combo-tile-bottom:#ff5d8d}.combo-css-tile--tier-max{--combo-tile-top:#ffe6ad;--combo-tile-bottom:#ff6e99;box-shadow:inset 0 -10px #4e07212e,0 14px 28px #00000042,0 0 18px #ff8ab652}.combo-how-to-guide{--combo-accent:#61ddc5;--combo-bg:#0b1215;--combo-muted:#819398;gap:18px;width:min(100%,1040px);margin:22px auto 0;padding:0 4px 8px;display:grid}.combo-how-to-guide__section{background:linear-gradient(180deg,#ffffff05,transparent),color-mix(in srgb,var(--combo-bg)78%,#091014);border:1px solid #ffffff0f;border-radius:22px;padding:20px 22px}.combo-how-to-guide__section h2{color:#dffaf3;letter-spacing:-.03em;margin:0 0 10px;font-size:clamp(1rem,2vw,1.28rem)}.combo-how-to-guide__section li{color:color-mix(in srgb,var(--combo-muted)82%,#dde9e6);line-height:1.7}.combo-how-to-guide__section ol{margin:0;padding-left:1.2rem}@keyframes combo-metric-pop{0%{color:var(--combo-feedback-bright);transform:translateY(4px)scale(.82)}55%{color:var(--combo-feedback-bright);transform:translateY(-1px)scale(1.12)}to{transform:translateY(0)scale(1)}}@keyframes combo-event-hit{0%{opacity:.4;transform:translate(8px)}48%{opacity:1;transform:translate(-2px)}to{transform:translate(0)}}@keyframes combo-score-burst{0%{opacity:.72;transform:translate(-50%,-34%)scale(.68)}18%{opacity:1;transform:translate(-50%,-55%)scale(1.16)}48%{opacity:1;transform:translate(-50%,-78%)scale(1)}to{opacity:0;transform:translate(-50%,-145%)scale(.92)}}@media (max-width:760px){.combo-layout{padding:max(12px,env(safe-area-inset-top))12px max(10px,env(safe-area-inset-bottom));gap:6px}.combo-hud{grid-template-columns:1fr auto;gap:8px 12px}.combo-brand small{font-size:.5rem}.combo-brand h1{font-size:1.35rem}.combo-hud-metrics{border-block:1px solid #ffffff0e;grid-area:2/1/auto/-1;grid-template-columns:repeat(3,1fr);gap:8px;padding-block:7px}.combo-metric{min-width:0}.combo-metric strong{font-size:1rem}.combo-hud-actions{gap:5px}.combo-hud-actions button{min-height:44px;padding-inline:11px;font-size:.55rem}.combo-stage{justify-content:center}.combo-live-event{max-width:calc(100vw - 40px);margin-bottom:-9px}.combo-live-event strong{max-width:58vw}.combo-board-shell{width:min(60svh,100vw - 20px)}.combo-board-interaction{border-radius:22px}.combo-direction-controls{margin-top:-10px}.combo-footer{grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:12px 16px;width:100%;display:grid}.combo-chain{width:100%;min-width:0}.combo-move-count{align-items:end}.combo-footer .combo-faq-link{grid-column:1/-1;justify-self:stretch}.combo-how-to-guide{gap:12px}.combo-how-to-guide__section{padding:16px 16px 18px}}@media (max-height:700px) and (min-width:761px){.combo-layout{padding-block:10px}.combo-board-shell{width:min(59svh,560px)}.combo-direction-controls{grid-template-rows:44px;grid-template-columns:repeat(4,44px)}}@media (prefers-reduced-motion:reduce){.combo-2048 *,.combo-2048 :before,.combo-2048 :after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.combo-score-burst{display:none}}
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