:root{--bg:#F8F7F4;--ink:#24243A;--card:#FFFFFF;--line:#E6E4EE;--acc:#7965D8;--muted:#5F5E72;--soft:#EFEDF8;--on:#FFFFFF;color-scheme:light;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
[data-theme=dark]{--bg:#17161F;--ink:#ECEAF6;--card:#201F2C;--line:#34324A;--acc:#A697F5;--muted:#AEACC4;--soft:#2A2839;--on:#17161F;color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
h1,h2,h3{margin:0;line-height:1.25;font-weight:700}
h1{font-size:clamp(1.9rem,5vw,2.7rem);letter-spacing:-.02em;max-width:22ch}
h2{font-size:1.3rem;margin:2rem 0 .8rem;scroll-margin-top:5rem}
p{margin:0 0 .8rem}
.muted{color:var(--muted)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:.8rem 1.25rem;background:var(--bg);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700}
.mark{width:22px;height:22px;border-radius:7px;background:var(--acc)}
nav{display:flex;gap:.2rem;flex-wrap:wrap;margin-left:auto}
.link{background:none;border:0;padding:.4rem .7rem;border-radius:10px;cursor:pointer;color:var(--muted)}
.link:hover{color:var(--ink);background:var(--soft)}
.wrap{max-width:980px;margin:0 auto;padding:1.2rem 1.25rem 3rem}
.btn{background:var(--acc);color:var(--on);border:0;border-radius:12px;padding:.6rem 1rem;font-weight:600;cursor:pointer;transition:filter .2s}
.btn:hover:not(:disabled){filter:brightness(1.06)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.sm{padding:.35rem .75rem;font-size:.9rem;border-radius:10px}
.btn:disabled,.chip:disabled{opacity:.45;cursor:default}
input,select,textarea{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:.6rem .8rem;width:100%;min-width:0}
textarea{resize:vertical;min-height:120px}
.field{display:grid;gap:.25rem;font-size:.9rem;color:var(--muted)}
.row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:flex-end}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.2rem}
.chips{display:flex;gap:.4rem;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:.3rem .8rem;cursor:pointer;font-size:.9rem}
.chip[aria-pressed=true]{background:var(--acc);color:var(--on);border-color:var(--acc)}
.search{margin:1.1rem 0 .9rem;padding:.8rem 1rem;border-radius:16px;font-size:1rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.8rem}
.tool{display:flex;flex-direction:column;gap:.5rem;transition:border-color .2s}
.tool:hover{border-color:var(--acc)}
.tool p{color:var(--muted);font-size:.93rem;flex:1}
.tool .row{justify-content:space-between;align-items:center;flex-wrap:nowrap}
.star{background:none;border:0;cursor:pointer;color:var(--muted);font-size:1.15rem;padding:0 .2rem}
.star[aria-pressed=true]{color:var(--acc)}
.empty{color:var(--muted);grid-column:1/-1}
.back{margin-bottom:.8rem}
.split{display:grid;grid-template-columns:260px minmax(0,1fr);gap:1rem;align-items:start}
.list{display:grid;gap:.4rem;align-content:start}
.item{text-align:left;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.6rem .8rem;cursor:pointer;width:100%}
.item[aria-current=true]{border-color:var(--acc)}
.item small{display:block;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.box{border:1px solid var(--line);border-radius:14px;min-height:160px;display:grid;place-items:center;overflow:hidden;background:var(--soft)}
.box canvas{max-width:100%;height:auto;display:block}
#bgR{touch-action:none;cursor:cell}
.checker{background:#fff conic-gradient(#cfd6e2 25%,#fff 0 50%,#cfd6e2 0 75%,#fff 0) 0 0/16px 16px}
.drop{display:block;border:2px dashed var(--line);border-radius:16px;padding:1.1rem;text-align:center;color:var(--muted);cursor:pointer;margin-bottom:.8rem}
.drop:hover{border-color:var(--acc);color:var(--ink)}
.drop input{display:none}
.face{width:100%;min-height:180px;display:grid;place-items:center;text-align:center;font-size:1.25rem;font-weight:600;padding:1rem;border-radius:18px;background:var(--soft);border:1px solid var(--line);cursor:pointer}
.bar{height:8px;border-radius:99px;background:var(--soft);overflow:hidden;margin:.6rem 0 .2rem}
.bar i{display:block;height:100%;width:0;background:var(--acc);transition:width .3s}
.big{font-size:3.6rem;font-weight:700;text-align:center;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stats{display:flex;gap:1.4rem;flex-wrap:wrap;color:var(--muted);font-size:.92rem}
.stats b{display:block;color:var(--ink);font-size:1.35rem}
.task{display:flex;gap:.6rem;align-items:center;padding:.55rem .2rem;border-bottom:1px solid var(--line)}
.task .tx{flex:1}
.task.done .tx{text-decoration:line-through;color:var(--muted)}
.tag{font-size:.78rem;padding:.1rem .5rem;border-radius:6px;background:var(--soft);color:var(--muted)}
.toast{position:fixed;left:50%;bottom:1.2rem;transform:translate(-50%,160%);background:var(--ink);color:var(--bg);padding:.7rem 1rem;border-radius:12px;max-width:90vw;font-size:.92rem;transition:transform .3s;z-index:9}
.toast.on{transform:translate(-50%,0)}
.foot{margin-top:2.5rem;background:var(--soft)}
.qopt{color:#fff;border:0;border-radius:14px;padding:1rem;font-weight:600;text-align:left;cursor:pointer;min-height:64px;font-size:.98rem}
.qopt:disabled{cursor:default;opacity:.9}
.arc{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:20px;padding:1.2rem 1.2rem 1.6rem}
.arc-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}
.arc-head .row{flex:1 1 300px;justify-content:flex-end}
.arc-head input{max-width:320px}
.arc-feat{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;border-color:var(--acc)}
.arc-h{font-size:1.05rem;margin:1.2rem 0 .6rem}
.gcard{display:flex;flex-direction:column;gap:.45rem;transition:border-color .2s}
.gcard:hover{border-color:var(--acc)}
.gcard p{margin:0;color:var(--muted);font-size:.92rem;flex:1}
.gcard .meta{font-size:.8rem;color:var(--muted)}
.gcard .row{justify-content:space-between;align-items:center;flex-wrap:nowrap}
.stat{font-weight:700;font-variant-numeric:tabular-nums}
.arc-stage{display:grid;place-items:center;min-height:300px}
#gCanvas{background:var(--card);border:1px solid var(--line);border-radius:14px;max-width:100%;height:auto;touch-action:none}
.b2048{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;width:min(340px,100%);background:var(--soft);padding:8px;border-radius:14px;touch-action:none}
.b2048 .c{aspect-ratio:1;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:clamp(1rem,4vw,1.4rem);color:#101218;background:var(--card)}
.mem{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;width:min(340px,100%)}
.mem button{aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-size:1.5rem;cursor:pointer}
.mem button.open{background:var(--acc);color:var(--on)}
.mem button.done{opacity:.5;cursor:default}
.pad{display:grid;justify-items:center;gap:6px;margin-top:.8rem}
.pad div{display:flex;gap:6px}
.pad button{width:64px;height:64px;border-radius:14px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-size:1.2rem;cursor:pointer}

#gDom{display:grid;gap:10px;width:min(340px,100%)}
.hole{aspect-ratio:1;border-radius:50%;border:2px solid var(--line);background:var(--soft);cursor:pointer}
.hole.mole{background:var(--acc);border-color:var(--acc)}
.echo-pad{aspect-ratio:1;border-radius:18px;border:0;color:#101218;font-weight:800;font-size:2rem;cursor:pointer;opacity:.7}
.echo-pad.lit{opacity:1;transform:scale(1.04)}
.mq{font-size:2rem;font-weight:800;text-align:center;margin:.5rem 0}
.math{display:grid;gap:.6rem;width:100%}
.mini{position:fixed;left:1rem;bottom:1rem;z-index:8;display:flex;gap:.5rem;align-items:center;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:.4rem .6rem;box-shadow:0 6px 20px rgba(36,36,58,.12)}
.qf{border:1px solid var(--line);border-radius:14px;padding:.8rem 1rem;margin:0 0 .7rem}
.qf legend{font-weight:600;padding:0 .3rem}
.qo{display:flex;gap:.5rem;align-items:center;padding:.35rem 0;cursor:pointer}
body[data-wall=aurora]{background:linear-gradient(120deg,#e9f0ff,#f6eaff,#e6fff7,#eaf3ff);background-size:300% 300%;animation:wall1 18s ease infinite}
@keyframes wall1{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
body[data-wall=waves]{background:radial-gradient(circle at 20% 30%,#dfeaff 0,transparent 40%),radial-gradient(circle at 80% 70%,#f3e4ff 0,transparent 42%),#f4f6fb;background-size:160% 160%;animation:wall2 22s linear infinite}
@keyframes wall2{0%{background-position:0% 0%}100%{background-position:100% 100%}}
body[data-wall=dots]{background-color:#f8f7f4;background-image:radial-gradient(#c9c3e6 1.2px,transparent 1.4px);background-size:22px 22px;animation:wall3 30s linear infinite}
@keyframes wall3{to{background-position:220px 220px}}
body[data-wall=grid]{background-color:#f8f9fc;background-image:linear-gradient(#e2e6f0 1px,transparent 1px),linear-gradient(90deg,#e2e6f0 1px,transparent 1px);background-size:40px 40px;animation:wall4 40s linear infinite}
@keyframes wall4{to{background-position:400px 400px}}
body[data-wall=sunrise]{background:linear-gradient(180deg,#fff3e6 0%,#ffe1ea 45%,#e8e4ff 100%);background-size:100% 200%;animation:wall5 16s ease-in-out infinite}
@keyframes wall5{0%,100%{background-position:0 0}50%{background-position:0 100%}}
@media (prefers-reduced-motion:reduce){body{animation:none!important}}

.ans-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;margin:.6rem 0}
.tile{border:0;border-radius:16px;padding:1rem;color:#fff;font-weight:700;font-size:1rem;text-align:left;min-height:64px;cursor:pointer;display:flex;gap:.6rem;align-items:center}
.tile:disabled{opacity:.45;cursor:default}
.tile .tl{background:rgba(255,255,255,.22);border-radius:8px;padding:.1rem .5rem;font-size:.85rem}
.t0{background:#7965D8}.t1{background:#1F7A5C}.t2{background:#B45309}.t3{background:#B42318}
.fb{margin-top:.8rem;padding:.8rem 1rem;border-radius:14px;border:1px solid var(--line)}
.fb.ok{border-color:#1F7A5C}.fb.no{border-color:#B42318}
@media (max-width:560px){.ans-grid{grid-template-columns:1fr}}

#fx{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none}
body[data-wall=soft]{background:radial-gradient(900px 520px at 8% -8%,#e8e2ff 0,transparent 62%),radial-gradient(820px 520px at 108% 6%,#ddf5ee 0,transparent 58%),radial-gradient(720px 600px at 52% 118%,#fde8f0 0,transparent 62%),#f8f7f4}
body[data-wall=notebook]{background-color:#fdfcf7;background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 31px,#dcd8ea 31px,#dcd8ea 32px)}

[data-wall=mesh]{background:linear-gradient(120deg,#e6e0ff,#dff6f1,#fde7f1,#fff4e0);background-size:300% 300%;animation:meshShift 24s ease-in-out infinite}
@keyframes meshShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.hkRow{display:grid;grid-template-columns:repeat(auto-fill,minmax(36px,1fr));gap:6px}
.hk{aspect-ratio:1;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-weight:700;cursor:pointer}
.hk.used{opacity:.35;cursor:default}
.pn{aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-weight:700;cursor:pointer}
.pn.good{background:#1F7A5C;color:#fff;border-color:#1F7A5C}
.pn.bad{background:#B42318;color:#fff;border-color:#B42318}
.lg{aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:var(--card);cursor:pointer}
.lg.on{background:#FFC24B;border-color:#E0A526;box-shadow:0 0 14px #FFC24B88}
.sg{aspect-ratio:1;border:none;border-radius:20px;cursor:pointer;opacity:.5;transition:opacity .15s,filter .15s}
.sg.sgOn{opacity:1;filter:brightness(1.3)}
.sg0{background:#FF647C}.sg1{background:#35D0BA}.sg2{background:#FFC24B}.sg3{background:#6C8CFF}
#brushRing{position:fixed;display:none;pointer-events:none;border:2px solid #6C4DFF;border-radius:50%;background:rgba(108,77,255,.14);box-shadow:0 0 0 1px rgba(255,255,255,.85);transform:translate(-50%,-50%);z-index:60}
.gate-hero{max-width:44rem;margin:1.5rem auto 1rem}
.gate-hero h1{font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.15;margin:.2rem 0 .6rem}
.gate-kicker{margin:0;text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--acc)}
.gate-actions{flex-wrap:wrap;gap:.6rem;margin:1.2rem 0}
.gate-note{font-size:.9rem;max-width:62ch}
.gate-form{max-width:460px;margin:1rem auto}
.pw{display:flex;gap:.4rem;align-items:center}
.pw input{flex:1;min-width:0}
.check{display:flex;gap:.5rem;align-items:flex-start;font-size:.92rem;margin:.6rem 0}
#mainNav[hidden]{display:none!important}

[data-wall=calm]{background-color:var(--bg);background-image:radial-gradient(circle,var(--line) 1px,transparent 1.4px);background-size:22px 22px}
@media (max-width:700px){.split,.pair{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}