:root{
  --bg:#F3F5FF; --bg2:#E6EAFB; --board:#D9DEF5; --cell:#F7F8FF; --surface:#FFFFFF;
  --ink:#1B1E33; --muted:#5B6188; --line:#D5DAF2;
  --blue:#4C6FFF; --teal:#12B5A2; --amber:#FF9F1C; --pink:#F2557E; --purple:#8E5CFF; --gold:#FFC233; --flame:#FF7A1A;
  --on-blue:#fff;
  --shadow:0 1px 0 rgba(27,30,51,.06),0 14px 30px -14px rgba(76,111,255,.35);
  --display:'Bricolage Grotesque',system-ui,sans-serif; --body:'Figtree',system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0A0B17; --bg2:#1A1C38; --board:#262B4D; --cell:#30365E; --surface:#1F2340;
  --ink:#F2F3FF; --muted:#A2A8CF; --line:#2E3459;
  --blue:#7D97FF; --teal:#3FDCC6; --amber:#FFC461; --pink:#FF7EA6; --purple:#9E6DF5; --gold:#FFCD4D;
  --on-blue:#0A0B17; --shadow:0 1px 0 rgba(0,0,0,.4),0 14px 30px -14px rgba(0,0,0,.7);
}}
:root[data-theme="dark"]{
  --bg:#0A0B17; --bg2:#1A1C38; --board:#262B4D; --cell:#30365E; --surface:#1F2340;
  --ink:#F2F3FF; --muted:#A2A8CF; --line:#2E3459;
  --blue:#7D97FF; --teal:#3FDCC6; --amber:#FFC461; --pink:#FF7EA6; --purple:#9E6DF5; --gold:#FFCD4D;
  --on-blue:#0A0B17; --shadow:0 1px 0 rgba(0,0,0,.4),0 14px 30px -14px rgba(0,0,0,.7);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font:400 17px/1.55 var(--body);color:var(--ink);background:linear-gradient(var(--bg),var(--bg2));background-color:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:8px}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}
h1,h2,h3{font-family:var(--display);line-height:1.04;letter-spacing:-.02em}
h2{font-size:clamp(2rem,4.6vw,3.2rem);font-weight:800;max-width:16ch}
p.lead{color:var(--muted);font-size:1.12rem;max-width:46ch;margin-top:16px}

/* nav */
nav{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.brand{display:flex;align-items:center;gap:10px;font:800 1.2rem var(--display);text-decoration:none;letter-spacing:-.01em}
.brand img{width:36px;height:36px;border-radius:10px;box-shadow:var(--shadow)}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 12px;border-radius:999px;text-decoration:none;font-weight:600;color:var(--muted)}
.nav-links a:hover{color:var(--ink);background:var(--surface)}
@media(max-width:640px){.nav-links a.hide-s{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font:700 1rem var(--body);padding:15px 24px;border-radius:16px;border:0;cursor:pointer;text-decoration:none;
  background:var(--blue);color:var(--on-blue);box-shadow:0 5px 0 color-mix(in srgb,var(--blue) 55%,#000);transition:transform .08s,box-shadow .08s}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 color-mix(in srgb,var(--blue) 55%,#000)}
.btn.ghost{background:var(--surface);color:var(--ink);box-shadow:0 5px 0 var(--line)}
.btn.ghost:active{box-shadow:0 1px 0 var(--line)}
.btn[aria-disabled=true]{opacity:.6;cursor:default;transform:none}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;padding:36px 0 96px}
.hero h1{font-size:clamp(2.8rem,7.4vw,5.6rem);font-weight:800}
.hero .cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center}
.hero small{display:block;margin-top:14px;color:var(--muted);font-size:.92rem}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:36px;padding-bottom:64px}}

/* playable board */
.game{background:var(--surface);border-radius:28px;padding:18px;box-shadow:var(--shadow);border:1px solid var(--line);max-width:460px;justify-self:center;width:100%}
.hud{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.hud .stat{font:700 .95rem var(--body);color:var(--muted);white-space:nowrap}
.hud .stat b{color:var(--ink);font-family:var(--display);font-size:1.25rem;font-variant-numeric:tabular-nums}
.meter{flex:1;height:14px;background:var(--board);border-radius:99px;position:relative;overflow:hidden}
.meter i{position:absolute;inset:0 auto 0 0;width:0;border-radius:99px;background:linear-gradient(90deg,var(--blue),var(--purple),var(--pink));transition:width .35s cubic-bezier(.3,1.4,.5,1)}
.meter u{position:absolute;top:0;bottom:0;width:2px;background:var(--surface);opacity:.8}
.flowtag{font:800 .85rem var(--display);min-width:5.4em;text-align:right;color:var(--muted)}
.flowtag.on{color:var(--flame)}
.board{display:grid;gap:5px;background:var(--board);padding:8px;border-radius:20px;aspect-ratio:1;touch-action:manipulation}
.cell{background:var(--cell);border-radius:10px;position:relative;display:grid;place-items:center}
.arrow{all:unset;cursor:pointer;width:100%;height:100%;display:grid;place-items:center;border-radius:10px;position:relative}
.arrow svg{width:68%;height:68%;overflow:visible;transition:transform .45s cubic-bezier(.5,-.3,.9,.6),opacity .45s}
.arrow[data-d=U]{--c:var(--blue)}.arrow[data-d=R]{--c:var(--teal)}.arrow[data-d=D]{--c:var(--amber)}.arrow[data-d=L]{--c:var(--pink)}
.arrow svg path{fill:none;stroke:var(--c);stroke-width:5.5;stroke-linecap:round;stroke-linejoin:round}
.arrow[data-d=U] svg{transform:rotate(-90deg)}.arrow[data-d=R] svg{transform:rotate(0)}.arrow[data-d=D] svg{transform:rotate(90deg)}.arrow[data-d=L] svg{transform:rotate(180deg)}
.arrow.gone{pointer-events:none}
.arrow.gone svg{opacity:0}
.arrow.gone[data-d=U] svg{transform:rotate(-90deg) translateX(260%)}.arrow.gone[data-d=R] svg{transform:translateX(260%)}
.arrow.gone[data-d=D] svg{transform:rotate(90deg) translateX(260%)}.arrow.gone[data-d=L] svg{transform:rotate(180deg) translateX(260%)}
.arrow.shake{animation:shake .32s}
.arrow.hint{animation:pulse .9s 3}
.arrow.shake::after{content:"";position:absolute;inset:0;border-radius:10px;background:var(--pink);opacity:.22}
@keyframes shake{20%{translate:-5px}40%{translate:5px}60%{translate:-4px}80%{translate:3px}}
@keyframes pulse{50%{transform:scale(1.22)}}
.tools{display:flex;gap:10px;margin-top:14px}
.tools button{flex:1;font:700 .95rem var(--body);padding:11px;border-radius:14px;border:1px solid var(--line);background:var(--cell);color:var(--ink);cursor:pointer}
.tools button:hover{border-color:var(--blue)}
.msg{min-height:1.6em;margin-top:12px;text-align:center;font-weight:600;color:var(--muted);font-size:.95rem}
.msg.win{color:var(--teal);font-family:var(--display);font-size:1.15rem;font-weight:800}
.pop{position:fixed;pointer-events:none;font:800 1.2rem var(--display);color:var(--flame);animation:pop .8s forwards;z-index:9;translate:-50% 0}
@keyframes pop{to{transform:translateY(-46px);opacity:0}}

/* sections */
section{padding:88px 0}
.rules{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.rule{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow)}
.rule h3{font-size:1.4rem;font-weight:700;margin:18px 0 8px}
.rule p{color:var(--muted)}
.demo{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;background:var(--board);padding:6px;border-radius:14px;width:150px}
.demo span{aspect-ratio:1;background:var(--cell);border-radius:7px;display:grid;place-items:center;font:800 1.1rem var(--display)}
.demo .t{color:var(--blue)}.demo .g{color:var(--teal)}.demo .x{color:var(--pink)}.demo .o{color:var(--amber)}
@media(max-width:820px){.rules{grid-template-columns:1fr}}

/* gamification */
.play{background:var(--ink);color:var(--bg);border-radius:40px;padding:72px clamp(20px,5vw,64px);position:relative;overflow:hidden}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .play{background:var(--surface);color:var(--ink)}}
:root[data-theme=dark] .play{background:var(--surface);color:var(--ink)}
.play h2{max-width:14ch}
.play p.lead{color:inherit;opacity:.72}
.loop{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:48px}
.tile{border-radius:26px;padding:26px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12)}
:root:not([data-theme=dark]) .tile{background:rgba(255,255,255,.08)}
.tile h3{font-size:1.5rem;font-weight:700;margin-bottom:6px}
.tile p{opacity:.74;max-width:38ch}
.tile .viz{margin-top:22px;min-height:84px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.flame{font-size:1.9rem}
.streak{display:flex;gap:7px}
.streak i{width:30px;height:30px;border-radius:10px;background:rgba(255,255,255,.12);display:grid;place-items:center;font:700 .8rem var(--body);font-style:normal}
.streak i.on{background:var(--flame);color:#fff}
.tiers{display:flex;gap:10px;align-items:flex-end}
.tier{width:58px;border-radius:14px 14px 8px 8px;display:grid;place-items:start center;padding-top:8px;font:800 .8rem var(--display);color:#fff}
.tier.b{height:54px;background:#D08A4E}.tier.s{height:74px;background:#9AA5B8}.tier.g{height:96px;background:var(--gold);color:#5a3d00}
.ranks{display:flex;flex-direction:column;gap:8px;width:100%}
.rank{display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem}
.rank .bar{flex:1;margin:0 12px;height:10px;border-radius:9px;background:rgba(255,255,255,.12);overflow:hidden}
.rank .bar i{display:block;height:100%;border-radius:9px;background:var(--teal)}
.swatches{display:flex;gap:10px}
.sw{width:44px;height:44px;border-radius:14px;display:grid;place-items:center}
.sw svg{width:60%}.sw path{fill:none;stroke:#fff;stroke-width:6;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:820px){.loop{grid-template-columns:1fr}}

/* stats strip */
.facts{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:36px;color:var(--muted);font-weight:600}
.facts b{color:var(--ink);font:800 1.7rem var(--display);margin-right:6px}

/* pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:44px;max-width:820px}
.plan{border-radius:26px;padding:30px;background:var(--surface);border:1px solid var(--line)}
.plan.pro{border:2px solid var(--blue);box-shadow:var(--shadow);position:relative}
.plan h3{font-size:1.6rem;font-weight:800}
.plan .price{font:800 1rem var(--body);color:var(--muted);margin:2px 0 16px}
.plan ul{list-style:none;padding:0;display:grid;gap:10px}
.plan li{display:flex;gap:10px;align-items:flex-start}
.plan li::before{content:"";flex:none;width:20px;height:20px;margin-top:2px;border-radius:7px;background:var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3.2L15 7' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100%}
@media(max-width:700px){.plans{grid-template-columns:1fr}}

/* final cta */
.final{text-align:center;padding:96px 0 72px}
.final h2{margin-inline:auto;max-width:14ch}
.final .btn{margin-top:30px}
footer{border-top:1px solid var(--line);padding:28px 0 44px;color:var(--muted);font-size:.95rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer a{text-decoration:none;font-weight:600}footer a:hover{color:var(--ink)}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* phones */
.phone{border-radius:34px;border:7px solid #14172E;background:#14172E;overflow:hidden;box-shadow:0 30px 60px -24px rgba(27,30,51,.55),0 0 0 1px rgba(255,255,255,.06);aspect-ratio:540/1205;position:relative}
.phone img{display:block;width:100%;height:100%;object-fit:cover}
.phone.crop{aspect-ratio:540/640}
.phone.crop img{object-position:top}
.stage{position:relative;display:flex;justify-content:center;align-items:flex-end;gap:0;min-height:560px}
.stage .phone{width:clamp(120px,15vw,200px);flex:none}
.stage .phone.mid{width:clamp(150px,18vw,240px);z-index:2;margin-inline:-18px}
.stage .phone.side{transform:translateY(-34px) rotate(-5deg)}
.stage .phone.side.r{transform:translateY(-34px) rotate(5deg)}
@media(max-width:900px){.stage{min-height:0}.stage .phone.side{display:none}.stage .phone.mid{width:min(280px,70vw);margin:0}}
.try{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px;align-items:center}
@media(max-width:900px){.try{grid-template-columns:1fr}}
.shots{display:flex;gap:20px;overflow-x:auto;padding:8px 4px 28px;margin-top:40px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.shots figure{flex:none;width:210px;scroll-snap-align:start}
.shots figcaption{margin-top:12px;font-weight:700}
.shots figcaption span{display:block;color:var(--muted);font-weight:500;font-size:.92rem}
.tile .phone.crop{margin-top:22px;width:min(100%,250px);border-radius:26px 26px 0 0;border-bottom:0;aspect-ratio:540/520}
.rules2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.rules2 ol{list-style:none;padding:0;display:grid;gap:18px;margin-top:32px}
.rules2 li{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:20px 22px;box-shadow:var(--shadow)}
.rules2 li b{display:block;font:700 1.25rem var(--display);margin-bottom:4px}
.rules2 li span{color:var(--muted)}
.duo{display:flex;gap:18px;justify-content:center}
.duo .phone{width:min(46%,250px)}.duo .phone:last-child{margin-top:48px}
@media(max-width:900px){.rules2{grid-template-columns:1fr;gap:36px}}
/* legal pages */
.doc{max-width:760px;padding:24px 0 96px}
.doc h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;margin-bottom:8px}
.doc .updated{color:var(--muted);margin-bottom:36px}
.doc h2{font-size:1.5rem;margin:40px 0 10px;max-width:none}
.doc p,.doc li{color:var(--ink);opacity:.9}
.doc p+p{margin-top:12px}
.doc ul{padding-left:22px;display:grid;gap:6px;margin-top:10px}
.doc a{color:var(--blue);font-weight:600}
.doc table{border-collapse:collapse;width:100%;margin-top:14px;font-size:.96rem}
.doc th,.doc td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.doc th{background:var(--surface)}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px 20px;margin-top:12px}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{margin-top:10px;color:var(--muted)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow);margin-top:20px}