@font-face{font-family:"Nunito";font-style:normal;font-weight:200 1000;font-display:swap;src:url(/fonts/nunito-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{color-scheme:light dark;
--page:#FBF7EE;--card:#FFFFFF;--ink:#24211C;--muted:#71695E;--line:#ECE3D2;--grid:#F1EAD8;
--accent:#3B5BDB;--accent-ink:#2F4BC0;--soft:#E3E9FF;--right:#23A15A;--wrong:#E5484D;--star:#F2B008;
--light:#F2EAD3;--dark:#5E9C76;--c0:#CFE3FF;--c2:#D9F2DC;
--shadow:0 1px 2px rgba(40,40,10,.06),0 12px 30px -14px rgba(40,50,20,.25);
--round:"Nunito",ui-rounded,"SF Pro Rounded","Hiragino Maru Gothic ProN","Apple SD Gothic Neo",system-ui,sans-serif;
--sans:"Nunito",ui-rounded,-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,"Hiragino Maru Gothic ProN","Hiragino Sans","Apple SD Gothic Neo","Noto Sans",sans-serif}
@media (prefers-color-scheme:dark){:root{
--page:#15140F;--card:#24221D;--ink:#F4EFE6;--muted:#B3AA9C;--line:#36322A;--grid:#1E1C16;
--accent:#6F8BFF;--accent-ink:#93A8FF;--soft:#1E2647;--right:#3CCB78;--wrong:#FF6369;--star:#FFC83D;
--c0:#1F3A63;--c2:#1F4A2B;
--shadow:0 1px 2px rgba(0,0,0,.3),0 14px 30px -14px rgba(0,0,0,.6)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--ink);font:500 17px/1.6 var(--sans)}
a{color:var(--accent-ink)}img{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:8px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--card);padding:8px 12px;border-radius:10px;z-index:10}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}.narrow{max-width:760px}
h1,h2,h3{font-family:var(--round);margin:0 0 .4em;font-weight:900;letter-spacing:-.025em;line-height:1.02}
h1{font-size:clamp(44px,6.2vw,80px);letter-spacing:-.035em}h2{font-size:clamp(34px,4.4vw,54px)}
h3{font-size:22px;font-weight:850;letter-spacing:-.01em;line-height:1.2}
h1 em,h2 em{font-style:normal;color:var(--accent)}
:lang(ko) h1,:lang(ko) h2,:lang(ko) h3,:lang(ko) .lead{word-break:keep-all}
:lang(ja) h1,:lang(ja) h2,:lang(ko) h1,:lang(ko) h2{letter-spacing:-.01em;line-height:1.15}
:lang(ja) h1,:lang(ko) h1{font-size:clamp(38px,5.2vw,64px)}
:lang(ja){--round:"Nunito",ui-rounded,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif}
.lead{font-size:clamp(18px,1.9vw,21px);color:var(--muted);max-width:36em;margin:0}.muted{color:var(--muted);font-size:15px}
/* header */
.top .wrap{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:10px;font:900 24px var(--round);letter-spacing:-.02em;color:var(--ink);text-decoration:none}
.brand img{border-radius:9px;box-shadow:0 4px 10px -4px rgba(59,91,219,.5)}
.top nav{margin-left:auto}.top nav a{color:var(--ink);text-decoration:none;font-weight:750;font-size:16px}.top nav a:hover{color:var(--accent-ink)}
.pill{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;border-radius:999px;padding:10px 18px;font-weight:800;font-size:15px;text-decoration:none;white-space:nowrap}
.pill.soon{background:var(--soft);color:var(--accent-ink)}
/* hero: a faint chessboard behind */
.hero{position:relative;overflow:hidden;isolation:isolate;padding:40px 0 88px}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
background-image:conic-gradient(var(--grid) 25%,transparent 0 50%,var(--grid) 0 75%,transparent 0);background-size:72px 72px;
-webkit-mask-image:radial-gradient(75% 90% at 75% 45%,#000 30%,transparent 80%);mask-image:radial-gradient(75% 90% at 75% 45%,#000 30%,transparent 80%)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.actions{display:flex;align-items:center;gap:24px;margin:30px 0 24px;flex-wrap:wrap}
.pill.big{padding:0 28px;min-height:58px;font-size:17px;box-shadow:0 14px 28px -14px rgba(59,91,219,.7)}
.pill.big.soon{background:var(--card);color:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}
.more{font-weight:800;color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2.5px;text-underline-offset:6px}
.facts{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-weight:700;font-size:15px}
.facts li{display:flex;align-items:center;gap:7px}.facts svg{width:18px;height:18px;color:var(--right)}
/* hero art: a phone with a game and the coach */
.hero-art{position:relative;min-height:660px;display:grid;place-items:center}
.float{position:absolute;z-index:1;font:900 64px/1 var(--round);color:var(--dark);opacity:.35;user-select:none}
.float.f1{left:4%;top:12%;transform:rotate(-12deg)}.float.f2{right:6%;top:20%;color:var(--star);opacity:.9;font-size:54px}.float.f3{left:8%;bottom:12%;transform:rotate(8deg)}
.phone{position:relative;z-index:2;width:310px;aspect-ratio:300/640;border-radius:54px;padding:11px;background:#1B1A17;
box-shadow:0 0 0 1.5px #3A372F,0 2px 0 4px rgba(0,0,0,.04),0 50px 80px -30px rgba(30,40,20,.55)}
.phone::before{content:"";position:absolute;top:20px;left:50%;width:84px;height:24px;margin-left:-42px;border-radius:14px;background:#1B1A17;z-index:3}
.screen{height:100%;border-radius:44px;background:var(--page);color:var(--ink);overflow:hidden;position:relative}
.game{display:flex;flex-direction:column;gap:12px;padding:58px 12px 16px}
.opp{display:flex;align-items:center;gap:8px;font:850 16px var(--round)}.emoji{font-size:24px;line-height:1}
.board{display:block;width:100%;height:auto;border-radius:10px;box-shadow:0 6px 16px -8px rgba(0,0,0,.35)}
.moves{margin:0;padding:8px 12px;border-radius:12px;background:var(--card);font:800 14px var(--round);display:flex;gap:6px;align-items:baseline}.moves span{color:var(--muted);font-weight:700}.moves b{color:var(--wrong)}
.coach{border-radius:18px;padding:12px;background:color-mix(in srgb,var(--star) 16%,var(--card));box-shadow:inset 0 0 0 1.5px color-mix(in srgb,var(--star) 50%,transparent)}
.coach p{margin:0 0 10px;display:flex;gap:8px;align-items:flex-start;font:800 14.5px/1.3 var(--round)}
.coach-btns{display:flex;gap:6px;flex-wrap:wrap}.coach-btns .right{margin-left:auto}
.b{display:inline-flex;align-items:center;gap:5px;height:30px;padding:0 10px;border-radius:999px;font:800 12.5px var(--round);white-space:nowrap}
.b svg{width:13px;height:13px}.b.solid{background:var(--accent);color:#fff}.b.ghost{background:color-mix(in srgb,var(--ink) 8%,transparent)}
/* tasks: a prompt, the board, the hint */
.task{border-radius:28px;padding:16px;background:var(--card);box-shadow:var(--shadow)}
.prompt{display:flex;gap:9px;align-items:flex-start;margin:0 0 12px;font:850 17px/1.3 var(--round);min-height:2.6em}
.dot{flex:none;width:18px;height:18px;border-radius:50%;margin-top:2px;box-shadow:inset 0 0 0 2px #2E2926}.dot.w{background:#FCF8EE}.dot.b{background:#33302B}
.hint{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:6px 14px;border-radius:999px;font:800 14px var(--round);color:#A87700;background:color-mix(in srgb,var(--star) 18%,transparent)}
.hint svg{width:16px;height:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.split.flip>:first-child{order:2}
.ticks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:10px;font-weight:750}
.ticks li{display:flex;gap:10px;align-items:center}.ticks svg{width:20px;height:20px;color:var(--star);flex:none}
.puzzle-art{display:grid;gap:16px;max-width:440px;justify-self:center;width:100%}
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.tile{display:grid;gap:6px;padding:10px 6px;border-radius:14px;background:var(--card);box-shadow:var(--shadow);text-align:center;font:900 20px var(--round)}
.tile i{display:block;height:6px;border-radius:6px;background:linear-gradient(90deg,var(--star) var(--p),color-mix(in srgb,var(--ink) 10%,transparent) var(--p))}
.tile.done{background:color-mix(in srgb,var(--right) 14%,var(--card))}.tile.done i{background:var(--right)}.tile.now{box-shadow:0 0 0 3px var(--accent),var(--shadow)}
.bots{list-style:none;margin:0;padding:18px;display:grid;gap:10px;border-radius:30px;background:var(--card);box-shadow:var(--shadow);max-width:440px;width:100%;justify-self:center}
.bots li{display:flex;align-items:center;gap:14px;padding:8px 12px;border-radius:18px;background:var(--page)}
.bots .emoji{font-size:34px;width:52px;height:52px;display:grid;place-items:center;border-radius:50%;background:var(--soft)}
.bots b{font:900 20px var(--round)}.bots .dots{margin-left:auto;color:var(--accent);font-size:10px;letter-spacing:2px}
.note{margin-top:18px;max-width:34em}
/* sections */
.band{padding:96px 0 16px}.band h2{max-width:16em}.band .lead{margin-top:4px}
.shows{display:grid;grid-template-columns:repeat(3,1fr);gap:28px 22px;margin-top:40px}
.shows article h3{margin:20px 0 6px}.shows article p{margin:0;color:var(--muted);font-size:16.5px;max-width:30em}
/* parents */
.parents{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:40px}
.panel{display:flex;flex-direction:column;background:var(--card);border-radius:32px;padding:28px;box-shadow:var(--shadow)}
.panel h3{margin:22px 0 6px}.panel p{margin:0;color:var(--muted);max-width:32em}
.panel-art{border-radius:22px;background:var(--page);padding:22px;min-height:400px;flex:1;display:grid;align-items:center}
.kids-title,.sheet-title{margin:0 0 14px;font:900 28px/1.1 var(--round);letter-spacing:-.02em}
.sheet-title{font-size:17px;text-align:center;margin-bottom:12px}
.kid-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.kid{display:flex;flex-direction:column;align-items:center;gap:6px;padding:18px 8px;border-radius:22px;background:var(--card);box-shadow:0 4px 14px -6px rgba(80,40,10,.18);text-align:center}
.kid b{font:850 19px var(--round)}.kid small{display:flex;align-items:center;gap:4px;font:750 13px var(--round);color:var(--muted)}
.kid small svg{width:14px;height:14px}.kid small.streak svg{color:#F08A00}.kid small.stars svg{color:var(--star)}
.avatar{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;font-size:37px;line-height:1}
.avatar.c0{background:var(--c0)}.avatar.c2{background:var(--c2)}.avatar.plus{background:var(--soft);color:var(--accent)}.avatar.plus svg{width:28px;height:28px}
.kid.add{background:transparent;box-shadow:none;border:2px dashed color-mix(in srgb,var(--muted) 40%,transparent)}
/* privacy + price */
.duo{display:grid;grid-template-columns:1.1fr 1fr;gap:20px;align-items:stretch;padding-top:96px;padding-bottom:16px}
.duo section{border-radius:34px;padding:40px}
.royal{color:#fff;background:radial-gradient(90% 90% at 100% 0%,#6F8BFF,transparent 60%),linear-gradient(150deg,#3B5BDB,#2A3F9E)}
.royal h2,.royal h2 em{color:#fff}.royal p{color:rgba(255,255,255,.9);max-width:32em}
.nots{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:8px 16px;font-weight:750}
.nots li{display:flex;align-items:center;gap:8px}.nots svg{width:20px;height:20px;flex:none;color:#FFD43B}
.card-panel{background:var(--card);box-shadow:var(--shadow)}.card-panel p{color:var(--muted)}
.icons{display:flex;gap:14px;margin-top:22px}.icons img{width:60px;border-radius:14px}
/* faq */
.faq-band{padding-bottom:96px}.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:48px;align-items:start}
.faq details{border-bottom:2px solid var(--line);padding:18px 0}.faq details:first-child{padding-top:4px}
.faq summary{font-weight:850;cursor:pointer;font-size:18.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--round)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;width:32px;height:32px;border-radius:50%;background:var(--soft);color:var(--accent-ink);display:grid;place-items:center;font-weight:900;font-size:21px;line-height:1}
.faq details[open] summary::after{content:"\2212"}.faq p{color:var(--muted);margin:10px 0 0}
/* other pages */
.wrap.page{padding:56px 24px 80px}.wrap.page h2{font-size:28px;margin-top:40px}.tips li{margin:8px 0}
/* footer (layout B) */
.site-footer{border-top:2px solid var(--line);padding:34px 0 40px;font-size:15px;color:var(--muted)}
.footer-top{display:flex;justify-content:space-between;gap:30px}
.footer-brand{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-weight:850;text-decoration:none;font-family:var(--round)}
.footer-brand img{filter:grayscale(1);opacity:.5;border-radius:5px;box-shadow:0 0 0 1px var(--line)}.footer-brand:hover img{filter:none;opacity:1}
.footer-tagline,.footer-made{margin:6px 0 0}.footer-made a{color:inherit;text-decoration:none}.footer-made a:hover,.footer-made a:focus{color:var(--ink);text-decoration:underline}
.footer-side{display:flex;flex-direction:column;align-items:flex-end;gap:14px}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}.footer-links a{color:var(--muted)}
details.language{position:relative}
details.language summary{list-style:none;display:flex;align-items:center;gap:7px;cursor:pointer;color:var(--ink);font-weight:750}
details.language summary::-webkit-details-marker{display:none}details.language summary svg{width:18px;height:18px}details.language .chevron{width:14px;height:14px}
details.language ul{position:absolute;right:0;bottom:calc(100% + 8px);list-style:none;margin:0;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 40px rgba(0,0,0,.16);min-width:200px;max-height:70vh;overflow:auto;z-index:5}
details.language li a{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;color:var(--ink);text-decoration:none}
details.language li a:hover{background:var(--soft)}details.language li svg{width:16px;height:16px;color:var(--accent)}
/* small screens */
@media (max-width:1000px){.shows{grid-template-columns:1fr 1fr}.parents{grid-template-columns:1fr}}
@media (max-width:900px){.hero-grid,.duo,.faq-grid,.split{grid-template-columns:1fr}.split.flip>:first-child{order:0}.hero{padding-top:24px}.hero-art{min-height:620px}.faq-grid{gap:8px}}
@media (max-width:640px){.shows{grid-template-columns:1fr}.band{padding-top:72px}.duo section{padding:30px 24px}.nots{grid-template-columns:1fr}
.panel{padding:16px;border-radius:26px}.panel-art{padding:16px;min-height:0}.float{font-size:44px}
.phone{width:280px;border-radius:48px;padding:10px}.screen{border-radius:39px}.game{padding:52px 10px 14px}.coach p{font-size:13.5px}.tiles{gap:5px}.tile{font-size:16px;padding:8px 4px}}
@media (max-width:760px){.footer-top{flex-direction:column}.footer-side{align-items:flex-start}.footer-links{justify-content:flex-start}details.language ul{left:0;right:auto}.top nav{display:none}.top .pill{margin-left:auto}}
@media (max-width:380px){.wrap{padding:0 16px}.kid-grid{gap:8px}.avatar{width:56px;height:56px;font-size:30px}.phone{width:256px}}