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44%),linear-gradient(90deg,#171923,#24242d 62%,#14151e);border:1px solid #e2b94a57;border-radius:12px 8px 8px 12px;width:min(100%,500px);height:52px;margin-top:42px;position:relative;box-shadow:inset 0 -9px 14px #00000052,0 16px 34px #0000003d}.belt-track:after{content:"";background:#e2b94a;border-radius:2px;width:8px;position:absolute;top:5px;bottom:5px;right:24px}.belt-knot{z-index:2;background:linear-gradient(145deg,#2e3039,#11131b);border:1px solid #e2b94a52;border-radius:16px;width:66px;height:66px;position:absolute;top:-7px;left:-2px;transform:rotate(45deg);box-shadow:0 12px 25px #00000052}.belt-tail{z-index:1;transform-origin:top;background:linear-gradient(90deg,#151720,#2b2d36 50%,#14151d);border-radius:0 0 5px 5px;width:32px;height:88px;position:absolute;top:48px;left:21px}.belt-tail-one{transform:rotate(12deg)}.belt-tail-two{transform:rotate(-18deg)}.belt-rank{z-index:3;color:#e8ca76;letter-spacing:.14em;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.72rem;font-weight:850;position:absolute;top:50%;right:76px;transform:translateY(-50%)}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.feature-card{border:1px solid var(--line);background:radial-gradient(circle at 85% 5%,#9a63ff1f,#0000 36%),#0a1731c9;border-radius:24px;min-height:230px;padding:28px;box-shadow:inset 0 1px #ffffff09}.feature-glyph{min-width:46px;height:46px;color:var(--cyan);background:#34aab017;border:1px solid #5ce9e240;border-radius:14px;place-items:center;padding-inline:10px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.86rem;font-weight:860;display:inline-grid}.feature-card h3{letter-spacing:-.02em;margin:28px 0 10px;font-size:1.08rem}.feature-card p{color:var(--muted);margin:0;font-size:.9rem;line-height:1.68}.closing-panel{background:radial-gradient(circle at 85% 20%,#9a63ff26,#0000 38%),radial-gradient(circle at 10% 80%,#2cf1ff14,#0000 35%),#0b1834db;border:1px solid #6b9fec3b;border-radius:28px;justify-content:space-between;align-items:center;gap:32px;padding:48px 54px;display:flex}.closing-panel .eyebrow{margin-bottom:13px}.closing-panel h2{font-size:clamp(2rem,3.6vw,3.35rem)}.contact-panel{border:1px solid var(--line);background:#09152ebd;border-radius:24px;margin-top:24px;padding:38px 46px;scroll-margin-top:24px}.contact-panel .eyebrow{margin-bottom:10px}.contact-panel h2{letter-spacing:-.045em;margin:0;font-size:clamp(1.8rem,3vw,2.6rem)}.contact-panel>div>p:last-child{color:var(--muted);margin:16px 0 0;line-height:1.7}.contact-panel a{color:var(--cyan);text-underline-offset:4px;-webkit-text-decoration:underline #5ce9e266;text-decoration:underline #5ce9e266}.site-footer{border-top:1px solid var(--line);color:var(--muted);grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;margin-top:82px;padding-block:34px 44px;font-size:.82rem;display:grid}.site-footer .brand{color:var(--text);font-size:1rem}.site-footer .brand-icon{border-radius:10px;width:34px;height:34px}.site-footer p{text-align:center;margin:0}.site-footer>div{justify-content:flex-end;gap:24px;display:flex}.site-footer>div a:hover{color:var(--text)}.privacy-shell{background:radial-gradient(circle at 80% 0%, #7345df26, transparent 30%), linear-gradient(#2959ac0b 1px, transparent 1px), linear-gradient(90deg, #2959ac0b 1px, transparent 1px), var(--navy-950);background-size:auto,72px 72px,72px 72px,auto;min-height:100vh}.privacy-main{width:min(860px,100% - 40px);padding-block:80px 120px}.privacy-heading{border-bottom:1px solid var(--line);padding-bottom:42px}.privacy-heading h1{letter-spacing:-.06em;margin:0;font-size:clamp(2.7rem,7vw,5.2rem);line-height:.98}.privacy-heading>p:not(.eyebrow){color:var(--muted);margin:20px 0 0;line-height:1.7}.policy-content{gap:42px;padding-top:52px;display:grid}.policy-content section{scroll-margin-top:24px}.policy-content h2{color:var(--text);letter-spacing:-.025em;margin:0 0 14px;font-size:1.34rem}.policy-content p,.policy-content li{color:var(--muted);font-size:.98rem;line-height:1.78}.policy-content p{margin:0}.policy-content p+p{margin-top:14px}.policy-content ul{gap:8px;margin:14px 0 0;padding-left:22px;display:grid}.policy-content strong{color:#dfe8fb}.policy-content a{color:var(--cyan);text-underline-offset:4px;-webkit-text-decoration:underline #5ce9e259;text-decoration:underline #5ce9e259}.policy-note{background:#1c58641c;border:1px solid #5ce9e233;border-radius:18px;padding:24px}.play-section{grid-template-columns:minmax(0,.78fr) minmax(420px,1.22fr);align-items:center;gap:clamp(44px,7vw,94px);padding-block:130px 70px;scroll-margin-top:20px;display:grid}.play-section-copy{max-width:500px}.play-section-copy>p:last-of-type,.guide-section-copy>p:last-of-type{color:var(--muted);margin:22px 0 27px;font-size:1.02rem;line-height:1.72}.guided-puzzle{background:radial-gradient(circle at 88% 7%,#9a63ff2e,#0000 33%),radial-gradient(circle at 10% 94%,#2cf1ff1a,#0000 36%),#081229eb;border:1px solid #75a7f43d;border-radius:30px;width:min(100%,570px);padding:clamp(20px,4vw,34px);box-shadow:0 34px 90px #00000047,inset 0 1px #ffffff0e}.puzzle-status{color:var(--muted);letter-spacing:.07em;text-transform:uppercase;justify-content:space-between;align-items:center;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.76rem;display:flex}.puzzle-status strong{color:var(--text)}.puzzle-progress{background:#9eb7e71f;border-radius:999px;height:4px;margin-top:12px;overflow:hidden}.puzzle-progress span{border-radius:inherit;background:linear-gradient(90deg, var(--cyan), var(--violet-bright));height:100%;transition:width .36s;display:block;box-shadow:0 0 14px #5ce9e280}.puzzle-guide-card{background:#16414f2e;border:1px solid #5ce9e22e;border-radius:17px;grid-template-columns:10px 1fr;align-items:start;gap:12px;min-height:74px;margin:22px 0 18px;padding:15px 17px;display:grid}.puzzle-guide-card p{color:#dffefd;margin:0;font-size:.9rem;line-height:1.55}.guide-pulse{background:var(--cyan);width:8px;height:8px;box-shadow:0 0 13px var(--cyan);border-radius:50%;margin-top:6px;animation:1.4s ease-in-out infinite guide-pulse}.guided-board{aspect-ratio:1;touch-action:none;-webkit-user-select:none;user-select:none;background-color:#040b1cdb;background-image:linear-gradient(#5a7ec314 1px,#0000 1px),linear-gradient(90deg,#5a7ec314 1px,#0000 1px),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:33.333% 33.333%;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box;border:1px solid #7499dc2e;border-radius:26px;width:min(100%,420px);margin-inline:auto;position:relative}.guided-lines,.guided-grid{width:100%;height:100%;position:absolute;inset:0}.guided-lines{z-index:1;overflow:visible}.guided-grid{z-index:2;grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);display:grid}.guided-tile{width:clamp(54px,14vw,82px);height:clamp(54px,14vw,82px);color:var(--text);cursor:pointer;background:#0a1731f0;border:2px solid #a3bbe940;border-radius:50%;place-self:center;place-items:center;padding:0;font:850 clamp(1.5rem,5vw,2.35rem)/1 ui-sans-serif,system-ui,sans-serif;transition:border-color .16s,box-shadow .16s,transform .16s;display:grid;box-shadow:0 10px 24px #0000003d,inset 0 1px #ffffff14}.guided-tile.is-suggested{border-color:var(--cyan);animation:1.5s ease-in-out infinite 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16px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.79rem;line-height:1.5}.puzzle-equation.has-feedback{color:#dffefd;border-color:#5ce9e252}.puzzle-rule{color:var(--muted);text-align:center;margin:14px 0 0;font-size:.77rem;line-height:1.52}.puzzle-complete{z-index:5;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#050d20f0;border:1px solid #5ce9e259;border-radius:21px;flex-direction:column;justify-content:center;align-items:center;padding:24px;display:flex;position:absolute;inset:14px}.complete-mark{width:62px;height:62px;color:var(--cyan);border:1px solid #5ce9e273;border-radius:50%;place-items:center;margin-bottom:18px;font-size:1.8rem;display:grid;box-shadow:0 0 30px #5ce9e233}.puzzle-complete strong{font-size:clamp(1.05rem,3vw,1.5rem)}.puzzle-complete p{color:var(--muted);margin:9px 0 20px}.puzzle-complete button{min-height:44px;color:var(--text);cursor:pointer;background:#1d6c7542;border:1px solid #5ce9e25c;border-radius:12px;padding:0 19px;font:750 .84rem ui-sans-serif,system-ui,sans-serif}.guide-main{z-index:1;width:min(1180px,100% - 40px);margin-inline:auto;position:relative}.guide-hero{max-width:940px;padding-block:90px 110px}.breadcrumb{color:var(--muted);margin-bottom:46px;font-size:.86rem;display:inline-block}.guide-hero h1{letter-spacing:-.065em;margin:0;font-size:clamp(3rem,6.5vw,6rem);line-height:.98}.guide-hero h1 span{background:linear-gradient(105deg, var(--cyan), #75d5f3 48%, var(--violet-bright));color:#0000;-webkit-background-clip:text;background-clip:text}.guide-hero>p:last-of-type{max-width:720px;color:var(--muted);margin:30px 0 34px;font-size:1.08rem;line-height:1.75}.guide-play-section{background:#08132bba;border:1px solid #709ce838;border-radius:34px;grid-template-columns:minmax(0,.72fr) minmax(430px,1.28fr);align-items:center;gap:clamp(48px,8vw,110px);padding:clamp(38px,6vw,70px);scroll-margin-top:24px;display:grid}.guide-rules{padding-block:150px 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h2{letter-spacing:-.05em;margin:0;font-size:clamp(2rem,4vw,3.5rem)}.worked-example p:not(.eyebrow){max-width:650px;color:var(--muted);margin:20px 0 0;line-height:1.72}.scoring-section{grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(54px,8vw,106px);padding-block:150px;display:grid}.score-examples{gap:15px;display:grid}.score-example{border:1px solid var(--line);background:#09152ec2;border-radius:20px;grid-template-columns:54px 1fr;align-items:center;gap:18px;min-height:108px;padding:19px 23px;display:grid}.score-example strong{color:#93d0ff;border:2px solid #62b7ff;border-radius:50%;place-items:center;width:48px;height:48px;display:grid}.score-2 strong{color:#74efa0;border-color:#42d873}.score-3 strong{color:#ffd982;border-color:#ffc857}.score-example p{color:var(--muted);margin:0;font-size:.92rem;line-height:1.65}.guide-modes{grid-template-columns:repeat(2,1fr);gap:18px;display:grid}.guide-modes article{border:1px solid var(--line);background:#0a1731c7;border-radius:27px;min-height:270px;padding:clamp(30px,5vw,52px)}.guide-modes article:last-child{background:radial-gradient(circle at 90% 10%,#9a63ff29,#0000 38%),#0a1731c7}.guide-modes span{color:var(--cyan);letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;font-weight:780}.guide-modes h2{letter-spacing:-.045em;margin:28px 0 14px;font-size:clamp(1.75rem,3.3vw,2.8rem)}.guide-modes p{color:var(--muted);margin:0;line-height:1.72}.guide-download{background:radial-gradient(circle at 85% 20%,#9a63ff26,#0000 38%),#0b1834db;border:1px solid #6b9fec3b;border-radius:28px;justify-content:space-between;align-items:center;gap:35px;margin-top:110px;padding:42px 48px;display:flex}.guide-download .brand-word{font-size:1.2rem}.guide-download h2{letter-spacing:-.05em;max-width:650px;margin:13px 0 0;font-size:clamp(1.7rem,3.5vw,3.15rem)}@keyframes guide-pulse{50%{opacity:.42;transform:scale(.76)}}@keyframes tile-glow{50%{box-shadow:0 0 0 7px #5ce9e20d,0 0 36px #5ce9e280}}@keyframes guide-dash{to{stroke-dashoffset:-38px}}@keyframes tile-nudge{50%{transform:translate(4px)}}.web-playable{--playable-midnight:#070b1b;--playable-navy:#111a35;isolation:isolate;-webkit-user-select:none;user-select:none;background:radial-gradient(circle at 82% 14%,#9b72ff2e,#0000 34%),radial-gradient(circle at 12% 88%,#4de3da24,#0000 38%),linear-gradient(145deg,#070b1b 0%,#11183a 56%,#071b2a 100%);border-color:#ffffff1a;border-radius:28px;flex-direction:column;align-items:center;width:min(100%,470px);min-height:730px;padding:14px 16px 13px;display:flex;position:relative;overflow:hidden}.playable-symbols{z-index:-1;opacity:.24;background-image:linear-gradient(31deg,#0000 48.6%,#4de3da1c 49%,#0000 49.4%),linear-gradient(121deg,#0000 48.7%,#9b72ff1a 49%,#0000 49.4%);background-size:88px 92px,121px 104px;position:absolute;inset:-30px;transform:rotate(-2deg)}.playable-symbols:after{content:"+   3   ×   8   ÷   2   −   5   +   1   ×   6   ÷";color:#5d8cff24;letter-spacing:29px;word-spacing:20px;font-size:28px;font-weight:900;line-height:3.3;position:absolute;inset:28px -20px;transform:rotate(6deg)}.playable-brand-row{justify-content:space-between;align-items:center;width:min(100%,430px);min-height:50px;margin-bottom:7px;display:flex}.playable-brand-lockup{align-items:center;gap:9px;display:flex}.playable-mini-mark{background:#070b1bbd;border:1px solid #4de3da7a;border-radius:10px;grid-template-rows:repeat(2,15px);grid-template-columns:repeat(2,15px);gap:2px;padding:4px;display:grid;box-shadow:0 0 16px #4de3da2e}.playable-mini-mark span{color:var(--text);background:linear-gradient(145deg,#263963,#182442);border-radius:4px;place-items:center;font-size:8px;font-weight:900;display:grid}.playable-mini-mark span:nth-child(2),.playable-mini-mark span:nth-child(3){color:#cdbaff}.playable-brand-name{color:#4de3da;letter-spacing:-.6px;text-shadow:0 0 14px #4de3da3d;font-size:clamp(18px,4vw,24px);font-weight:900;line-height:1}.playable-brand-name span{color:#9b72ff;text-shadow:0 0 14px #9b72ff47}.playable-tagline{color:#b9c3e2;letter-spacing:.2px;margin-top:3px;font-size:10px;font-weight:700}.playable-label{color:#f7f8ff8f;letter-spacing:.6px;border:1px solid #ffffff2e;border-radius:5px;align-self:flex-start;margin-top:3px;padding:3px 5px;font-size:8px;font-weight:800}.playable-status-card,.web-playable .puzzle-guide-card{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#111a35c7;border:1px solid #ffffff1a;width:min(100%,430px);box-shadow:0 12px 32px #0003}.playable-status-card{border-radius:12px;grid-template-columns:auto 1fr auto;align-items:center;gap:9px;min-height:40px;padding:8px 10px;display:grid}.playable-status-copy{color:#b9c3e2;white-space:nowrap;align-items:baseline;gap:7px;font-size:11px;font-weight:700;display:flex}.playable-status-copy strong{color:var(--text);font-size:12px}.playable-status-card .puzzle-progress{background:#ffffff14;width:100%;height:6px;margin:0}.playable-points{color:#ffc857;white-space:nowrap;font-size:11px;font-weight:900}.web-playable .puzzle-guide-card{background:linear-gradient(135deg,#4de3da1c,#9b72ff1c);border-color:#4de3da5c;border-radius:16px;min-height:76px;margin:8px 0 0;padding:9px 12px;display:block}.web-playable .puzzle-guide-card.nudge{border-color:#ff6b9ddb;animation:.36s card-nudge}.playable-guide-title{color:var(--text);text-align:center;justify-content:center;align-items:center;gap:8px;font-size:clamp(.78rem,2vw,.92rem);line-height:1.35;display:flex}.gesture-icon{color:#070b1b;background:#4de3da;border-radius:50%;flex:none;place-items:center;width:23px;height:23px;font-size:14px;font-weight:900;display:grid;box-shadow:0 0 12px #4de3da6b}.web-playable .puzzle-equation{color:#b9c3e2;direction:ltr;background:0 0;border:0;min-height:0;margin:6px 0 0;padding:0;font-size:clamp(.76rem,2vw,.88rem);font-weight:700}.web-playable .guided-board{background:#070b1bcc;border:0;border-radius:25px;width:min(100%,390px);margin-top:9px;box-shadow:0 20px 44px #00000052,inset 0 0 0 1px #ffffff0b}.web-playable .guided-grid{gap:2.2%;padding:2.2%}.web-playable .guided-tile{text-shadow:0 2px 5px #00000059;background:linear-gradient(145deg,#263963f5,#182442f0);border:1px solid #ffffff1f;border-radius:17%;place-self:stretch stretch;width:auto;height:auto;font-size:clamp(1.75rem,6.5vw,2.65rem);box-shadow:inset 0 1px #ffffff14,0 7px 13px #0003}.web-playable .guided-tile.is-suggested{z-index:4;border-color:#4de3da;animation:none;box-shadow:0 0 0 3px #4de3dad1,0 0 20px #4de3da66,inset 0 0 18px #4de3da1f}.web-playable .guided-tile.is-target{border-color:#9b72ffb8;position:relative;box-shadow:inset 0 0 15px #9b72ff29}.web-playable .guided-tile.is-target:before{content:"?";color:#070b1b;background:#9b72ff;border:2px solid #070b1bd1;border-radius:50%;place-items:center;width:24px;height:24px;font-size:15px;font-weight:900;display:grid;position:absolute;top:6%;right:6%;box-shadow:0 0 10px #9b72ff7a}.web-playable .guided-tile.is-selected{transform:scale(.96)}.web-playable .guided-tile.is-wrong{animation:.39s wrong-tile}.web-playable .guide-line-shadow{stroke:#4de3da2e;stroke-width:13px;stroke-linecap:round}.web-playable .suggested-puzzle-line{stroke:#4de3daf5;stroke-width:5px;stroke-dasharray:8 7;filter:none;animation:1.1s linear infinite guide-dash}.drag-puzzle-line{stroke:#5d8cfff2;stroke-width:5px;stroke-linecap:round;filter:drop-shadow(0 0 5px #5d8cffb8)}.web-playable .found-puzzle-line{opacity:.88;animation:.48s both found-pop}.playable-guide-hand{z-index:6;left:var(--guide-start-x);top:var(--guide-start-y);pointer-events:none;background:#070b1be0;border:1px solid #ffffff42;border-radius:50%;place-items:center;width:46px;height:46px;margin:-23px 0 0 -23px;font-size:27px;animation:2.75s ease-in-out 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h1{font-size:clamp(3.4rem,17vw,5rem)}.hero-actions{flex-direction:column;gap:20px}.demo-board{border-radius:28px}.visual-caption{gap:8px;font-size:.75rem}.signal-strip{grid-template-columns:repeat(2,1fr)}.signal-strip>div:nth-child(2){border-right:0}.signal-strip>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.signal-strip>div{padding:22px}.content-section{padding-block:110px 100px}.modes-section{padding-bottom:110px}.challenge-section{gap:36px;margin-bottom:110px;padding:32px 24px}.progress-section{gap:82px;padding-bottom:110px}.feature-grid{grid-template-columns:1fr}.feature-card{min-height:0}.mode-card{grid-template-columns:1fr;padding:28px}.mode-icon{width:112px}.closing-panel{padding:34px 28px}.contact-panel{padding:30px 28px}.privacy-main{width:min(100% - 28px,860px);padding-block:60px 90px}}html[dir=rtl] .language-picker select{padding-left:34px;padding-right:13px}html[dir=rtl] .mobile-navigation nav{left:0;right:auto}html[dir=rtl] .text-link 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