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small{color:#93aeca;font-size:.78rem;font-weight:700}.stats-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.leaderboard-panel{gap:12px;display:grid}.leaderboard-state{color:#93aeca;text-align:center;text-transform:uppercase;border:1px solid #a4b4c93d;border-radius:7px;min-width:88px;padding:7px 9px;font-size:.7rem;font-weight:950}.leaderboard-state.is-unlocked{color:#41d5ff;border-color:#41d5ff8a}.leaderboard-grid{gap:12px;display:grid}.leaderboard-list{gap:8px;display:grid}.leaderboard-list h3{color:#f6fbff;margin:0;font-size:.9rem;line-height:1.15}.leaderboard-list ol{gap:6px;margin:0;padding:0;list-style:none;display:grid}.leaderboard-list li{background:#071827;border:1px solid #50739642;border-radius:8px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;min-height:36px;padding:7px 9px;display:grid}.leaderboard-list span{color:#41d5ff;background:#0d2b43;border-radius:6px;place-items:center;width:24px;height:24px;font-size:.72rem;font-weight:950;display:grid}.leaderboard-list strong{color:#fff;text-overflow:ellipsis;white-space:nowrap;font-size:.86rem;font-weight:900;overflow:hidden}.leaderboard-player{gap:2px;min-width:0;display:grid}.leaderboard-player small{color:var(--leaderboard-rank-accent);text-overflow:ellipsis;white-space:nowrap;font-size:.68rem;font-weight:900;line-height:1.1;overflow:hidden}.leaderboard-list em{color:#ffbe49;font-size:.78rem;font-style:normal;font-weight:950}.leaderboard-list p,.leaderboard-locked{color:#93aeca;margin:0;font-size:.84rem;line-height:1.35}.unlock-list{gap:9px;margin:0;padding:0;list-style:none;display:grid}.unlock-list li{background:#071827;border:1px solid #50739642;border-radius:8px}.unlock-list li.is-unlocked{background:#0d2b43;border-color:#41d5ff80}.upgrade-toggle-row{cursor:pointer;grid-template-columns:auto auto minmax(0,1fr);align-items:center;gap:2px 10px;min-height:58px;padding:10px 12px;display:grid}.upgrade-toggle-row input{accent-color:#41d5ff;grid-row:span 2;width:20px;height:20px;margin:0}.upgrade-toggle-row input:disabled,.unlock-list li:not(.is-unlocked) .upgrade-toggle-row{cursor:not-allowed}.unlock-list span{color:#93aeca;text-align:center;text-transform:uppercase;border:1px solid #a4b4c93d;border-radius:7px;grid-row:span 2;min-width:54px;padding:6px 8px;font-size:.7rem;font-weight:950}.unlock-list li.is-unlocked span{color:#41d5ff;border-color:#41d5ff8a}.unlock-list strong{color:#fff;font-size:.92rem}.unlock-list small{color:#93aeca;font-size:.78rem;font-weight:750}.stats-row strong{color:#fff;font-size:1.25rem}.reward-log{gap:10px;margin:0;padding:0;list-style:none;display:grid}.reward-log li{background:#071827;border:1px solid #50739642;border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;min-height:54px;padding:10px 12px;display:grid}.reward-log span{color:#fff;gap:2px;font-weight:850;display:grid}.reward-log strong{color:#ffbe49}.reward-log em{color:#41d5ff;text-transform:uppercase;grid-column:2;font-size:.72rem;font-style:normal;font-weight:900}.empty-log{justify-content:flex-start;font-size:.9rem}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.floating-keyboard{right:max(14px, env(safe-area-inset-right));bottom:max(14px, env(safe-area-inset-bottom));z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#07111ff0;border:1px solid #a4b4c957;border-radius:8px;width:min(360px,100vw - 28px);padding:12px;position:fixed;box-shadow:0 22px 60px #00000070,inset 0 1px #ffffff14}.floating-keyboard-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.floating-keyboard button{color:#f6fbff;touch-action:manipulation;background:#102033;border:1px solid #a4b4c933;border-radius:8px;min-height:48px;font-size:1.25rem;font-weight:950}.floating-keyboard button:active{transform:translateY(1px)}.floating-keyboard .keyboard-secondary{color:#93aeca;text-transform:uppercase;background:#071827;font-size:.82rem}.floating-keyboard-actions{grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:8px;margin-top:8px;display:grid}.floating-keyboard .keyboard-submit{color:#211101;background:linear-gradient(135deg,#ffbe49,#ff8f3d);font-size:.95rem}.end-run-overlay{z-index:60;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:radial-gradient(circle at 50% 32%,#41d5ff33,#0000 22rem),#030912b8;place-items:center;padding:22px;display:grid;position:fixed;inset:0}.end-run-modal{background:linear-gradient(145deg,#0f273ff5,#07111ffa),#07111f;border:1px solid #a4b4c961;border-radius:8px;gap:18px;width:min(480px,100%);padding:22px;display:grid;box-shadow:0 30px 80px #0000008a,inset 0 1px #ffffff1a}.end-run-modal-header{gap:4px;display:grid}.end-run-modal h2{margin:0;font-size:1.6rem}.end-run-score-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.end-run-score-grid div{background:#071827;border:1px solid #50739652;border-radius:8px;gap:5px;min-width:0;padding:12px;display:grid}.end-run-score-grid span,.end-run-name-field span{color:#93aeca;text-transform:uppercase;font-size:.72rem;font-weight:950}.end-run-score-grid strong{color:#fff;font-size:clamp(1.05rem,4vw,1.42rem);line-height:1.05}.end-run-name-field{gap:8px;display:grid}.end-run-name-field input{color:#fff;background:#030912b8;border:1px solid #41d5ff61;border-radius:8px;width:100%;min-height:54px;padding:0 15px;font-size:1.08rem;font-weight:850}.end-run-name-field input::placeholder{color:#6f89a5}.end-run-error{color:#fecdd3;margin:-4px 0 0;font-size:.88rem;font-weight:800}.end-run-actions{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:10px;display:grid}.end-run-actions button{min-height:48px}.end-run-submit{color:#211101;background:linear-gradient(135deg,#ffbe49,#ff8f3d);border-radius:7px;padding:.66rem .9rem;font-size:.86rem;font-weight:950}.end-run-submit:disabled{cursor:wait;filter:saturate(.65);opacity:.74}@keyframes rainbow-border-shift{0%{background-position:0%}to{background-position:200%}}@keyframes rainbow-button-shift{0%{background-position:0%}to{background-position:220%}}@keyframes max-speed-toast-smash{0%{opacity:0;transform:translate(-50%, -50%) scale(.34) rotate(var(--toast-enter-rotation))}13%{opacity:1;transform:translate(-50%, -50%) scale(1.24) rotate(calc(var(--toast-settle-rotation) * -1))}26%{transform:translate(-50%, -50%) scale(.94) rotate(var(--toast-settle-rotation))}58%{opacity:1;transform:translate(-50%, -50%) scale(1) rotate(var(--toast-settle-rotation))}to{opacity:0;transform:translate(calc(-50% + var(--toast-exit-x)), calc(-50% + var(--toast-exit-y))) scale(.82) rotate(var(--toast-exit-rotation))}}@keyframes streak-milestone-smash{0%{opacity:0;transform:translate(-50%, -50%) scale(.28) rotate(var(--streak-enter-rotation))}10%{opacity:1;transform:translate(-50%, -50%) scale(1.32) rotate(calc(var(--streak-settle-rotation) * -1))}22%{transform:translate(-50%, -50%) scale(.94) rotate(var(--streak-settle-rotation))}68%{opacity:1;transform:translate(-50%, -50%) scale(1.04) rotate(var(--streak-settle-rotation))}to{opacity:0;transform:translate(-50%, -82%) scale(.86) rotate(var(--streak-exit-rotation))}}@keyframes rank-transition-smash{0%{opacity:0;transform:translate(-50%, -50%) scale(.3) rotate(var(--rank-enter-rotation))}10%{opacity:1;transform:translate(-50%, -50%) scale(1.24) rotate(calc(var(--rank-settle-rotation) * -1))}24%{transform:translate(-50%, -50%) scale(.96) rotate(var(--rank-settle-rotation))}68%{opacity:1;transform:translate(-50%, -50%) scale(1.02) rotate(var(--rank-settle-rotation))}to{opacity:0;transform:translate(-50%, -78%) scale(.86) rotate(var(--rank-exit-rotation))}}@keyframes max-speed-rainbow{0%{background-position:0%}to{background-position:260%}}@media (width<=920px){.app-shell{grid-template-rows:minmax(0,58vh) minmax(0,42vh);grid-template-columns:1fr}.math-arena{min-height:0;padding:18px}.score-strip{width:min(680px,100% - 36px);top:76px}.max-speed-toast,.streak-milestone-toast,.rank-transition-toast{top:136px}.question-stage{padding-top:78px}.side-panel{border-top:1px solid #50739657;border-left:0;height:auto;min-height:auto}}@media (width<=620px){.app-shell{grid-template-rows:minmax(0,1fr)}.math-arena{height:100dvh;min-height:100dvh;padding:16px 16px 88px;display:block;overflow:auto}.arena-topbar,.answer-form{grid-template-columns:1fr}.arena-topbar{align-items:stretch}.brand-zone{flex-direction:row;align-items:flex-start}.score-trophy-row{max-width:calc(100vw - 104px);top:52px}.topbar-actions{display:none}.difficulty-grid,.stats-row{grid-template-columns:1fr}.question-stage{padding:142px 0 18px}.score-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:calc(100% - 32px);top:112px}.max-speed-toast,.streak-milestone-toast,.rank-transition-toast{top:172px}.streak-milestone-toast span,.streak-milestone-toast.is-hundred span{font-size:clamp(2rem,12vw,3.6rem)}.streak-milestone-toast strong{font-size:.92rem}.rank-transition-toast span{font-size:.9rem}.rank-transition-toast strong{font-size:clamp(1.8rem,10vw,3.2rem)}.score-tile{min-height:64px;padding:9px}.score-trophy-row{gap:5px;width:calc(100vw - 32px);max-width:calc(100vw - 32px)}.score-trophy{width:30px;height:30px}.score-trophy svg{width:22px;height:22px}.score-tile span,.panel-kicker{font-size:.65rem}.score-tile strong{font-size:1.12rem}.score-tile small{font-size:.6rem}.question-card{padding:18px}h1{font-size:clamp(3.6rem,20vw,5.2rem)}.equals-line{margin-bottom:16px;font-size:2rem}.question-meta{align-items:flex-start}.time-bonus-helper{width:96px}.answer-form input,.answer-form button{min-height:52px}.answer-form{grid-template-columns:minmax(0,1fr) 52px}.answer-form input{grid-column:1/-1}.skip-button{grid-column:1;width:100%}.submit-icon-button{grid-column:2;width:52px}.floating-keyboard{width:100%;margin-top:12px;padding:10px;position:static;box-shadow:0 16px 36px #00000047,inset 0 1px #ffffff14}.floating-keyboard button{min-height:44px;font-size:1.12rem}.floating-keyboard .keyboard-secondary,.floating-keyboard .keyboard-submit{font-size:.78rem}.mobile-menu-fab{top:max(16px, env(safe-area-inset-top));right:max(16px, env(safe-area-inset-right));z-index:31;color:#f6fbff;background:#0d2b43;border:1px solid #41d5ff8a;border-radius:8px;place-items:center;min-width:72px;min-height:54px;padding:0 16px;font-size:.9rem;font-weight:950;display:grid;position:fixed;box-shadow:0 18px 44px #00000061}.mobile-menu-backdrop{z-index:29;opacity:0;pointer-events:none;background:#03091294;transition:opacity .16s;display:block;position:fixed;inset:0}.mobile-menu-backdrop.is-open{opacity:1;pointer-events:auto}.side-panel-top-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.side-panel-top-actions .ghost-button{min-height:46px}.side-panel{z-index:30;width:min(390px,92vw);min-height:0;padding:max(18px, env(safe-area-inset-top)) 18px max(18px, env(safe-area-inset-bottom));border-top:0;border-left:1px solid #50739670;transition:transform .18s;position:fixed;top:0;bottom:0;right:0;transform:translate(104%)}.side-panel.is-mobile-open{transform:translate(0)}}