:root{--bg1:#000724;--bg2:#1c2260;--acc:#ffd23f;--btn:#262d63;--btnb:#3b4490;--panel:#1b2150}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;touch-action:manipulation}
html,body{margin:0;height:100%;background:var(--bg1);color:#eef;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;overflow:hidden;overscroll-behavior:none;user-select:none;-webkit-user-select:none}
body{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
#bg{position:fixed;inset:0;background:radial-gradient(circle at 50% 28%,var(--bg2),var(--bg1) 72%);z-index:0}
#decor{position:fixed;inset:0;overflow:hidden;z-index:0;pointer-events:none}
#decor span{position:absolute;opacity:.35;will-change:transform}
#decor.fall span{top:-10%;animation:fall linear infinite}
#decor.rise span{top:105%;animation:rise linear infinite}
#decor.drift span{animation:drift linear infinite;left:-12%}
#decor.twinkle span{animation:twinkle ease-in-out infinite}
@keyframes fall{to{transform:translateY(120vh) rotate(360deg)}}
@keyframes rise{to{transform:translateY(-120vh) translateX(30px)}}
@keyframes drift{to{transform:translateX(125vw) rotate(40deg)}}
@keyframes twinkle{0%,100%{opacity:.08;transform:scale(.7)}50%{opacity:.8;transform:scale(1.15)}}
@media (prefers-reduced-motion:reduce){#decor span{animation:none!important;opacity:.2}}
.screen{display:none;position:absolute;inset:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);flex-direction:column;z-index:1;min-height:0}
.screen.on{display:flex}
header.top{display:flex;align-items:center;gap:10px;padding:10px 14px}
h1{font-size:22px;margin:0;flex:1}h1 span{color:var(--acc)}
h2{margin:0;font-size:17px;line-height:1.15}
.ttl{flex:1;min-width:0}.ttl small{display:block;opacity:.65;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.total{text-align:center;min-width:54px}.total b{display:block;font-size:18px;color:var(--acc)}.total small{font-size:10px;opacity:.65;text-transform:uppercase}
.stats{display:flex;gap:10px}.stats div{text-align:center;min-width:38px}.stats b{display:block;font-size:17px}.stats small{font-size:10px;opacity:.6;text-transform:uppercase}
.sub{margin:0;padding:0 16px 6px;opacity:.7;font-size:13px;text-transform:uppercase;letter-spacing:.08em}
.scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;touch-action:pan-y;padding:4px 14px 14px}
.hint{text-align:center;font-size:12px;opacity:.55;margin:0 0 10px}
button{font:inherit;color:#eef;background:var(--btn);border:1px solid var(--btnb);border-radius:12px;min-height:48px;font-weight:700;font-size:16px;cursor:pointer;padding:0 10px}
button:active{filter:brightness(1.3);transform:scale(.96)}
button.primary{background:var(--acc);color:#1a1a1a;border-color:var(--acc)}
button.icon{min-width:48px;padding:0;font-size:22px}
button:disabled{opacity:.45}
/* world cards */
.wcard{display:flex;align-items:center;gap:14px;width:100%;text-align:left;margin:0 0 12px;padding:14px;min-height:92px;border-radius:18px;border:2px solid var(--c-acc);color:#fff;position:relative;overflow:hidden}
.wcard .wi{font-size:38px;flex:none;width:52px;text-align:center}
.wcard .wt{flex:1;min-width:0}
.wcard b{display:block;font-size:18px}
.wcard small{display:block;opacity:.85;font-weight:500;font-size:12px;margin-top:2px}
.wcard .bar{height:6px;border-radius:3px;background:#0006;margin-top:8px;overflow:hidden}.wcard .bar i{display:block;height:100%;background:var(--c-acc)}
.wcard .sw{display:grid;grid-template-columns:repeat(3,10px);gap:2px;flex:none}.wcard .sw i{width:10px;height:10px;border-radius:2px}
.wcard .cnt{font-size:12px;margin-top:4px;font-weight:700;color:var(--c-acc)}
.wcard.locked{filter:grayscale(.85) brightness(.6)}
.wcard.locked .lock{position:absolute;right:14px;top:10px;font-size:20px}
nav.foot{display:flex;gap:8px;padding:2px 14px 8px}nav.foot button{flex:1}
/* level map */
#map .mapin,#jmap .mapin{position:relative;width:100%;margin:8px 0 24px}
#map .path,#jmap .path{position:absolute;left:0;top:0;width:100%;pointer-events:none}
#map .path path,#jmap .path path{fill:none;stroke:var(--acc);stroke-opacity:.35;stroke-width:6;stroke-dasharray:2 12;stroke-linecap:round;vector-effect:non-scaling-stroke}
.node{position:absolute;width:64px;height:64px;margin:-32px 0 0 -32px;border-radius:50%;font-size:22px;font-weight:800;padding:0;display:flex;align-items:center;justify-content:center;flex-direction:column;line-height:1;background:var(--btn);border:3px solid var(--btnb)}
.node small{font-size:11px;letter-spacing:1px;color:var(--acc);margin-top:2px;height:12px}
.node.done{border-color:var(--acc)}
.node.cur{background:var(--acc);color:#1a1a1a;border-color:#fff;animation:pulse 1.4s ease-in-out infinite}
.node.cur small{color:#1a1a1a}
.node.locked{opacity:.5;filter:grayscale(.7)}
.node .par{position:absolute;bottom:-18px;font-size:10px;opacity:.7;font-weight:600;white-space:nowrap}
@keyframes pulse{50%{transform:scale(1.1);box-shadow:0 0 0 10px #ffffff22}}
/* game */
#stage{flex:1;position:relative;min-height:0;touch-action:none;cursor:grab;display:flex;align-items:center;justify-content:center}
#scene{--s:min(15vw,15vh,64px);width:calc(var(--s)*3);height:calc(var(--s)*3);perspective:900px;perspective-origin:50% 50%}
#cube{width:100%;height:100%;position:relative;transform-style:preserve-3d;transform:rotateX(-28deg) rotateY(-35deg)}
.cubie{position:absolute;left:50%;top:50%;width:var(--s);height:var(--s);margin:calc(var(--s)/-2) 0 0 calc(var(--s)/-2);transform-style:preserve-3d}
.f{position:absolute;inset:0;background:#111;backface-visibility:hidden;border-radius:2px}
.f i{position:absolute;inset:7%;border-radius:12%;display:block}
.f.k{background:#0b0b10}
#pad{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;padding:8px 12px}
#pad button.hl{background:var(--acc);color:#1a1a1a;border-color:#fff;animation:pulse 0.8s ease-in-out 3}
nav{display:flex;gap:8px;padding:2px 12px 8px}nav button{flex:1;padding:0 4px}
#s-game.lvl #scramble{display:none}
#win{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#000a;z-index:5}
#win[hidden]{display:none}
#win>div{background:var(--panel);padding:22px 24px;border-radius:20px;text-align:center;border:2px solid var(--acc);width:min(86vw,360px)}
#win h2{margin:0 0 6px;font-size:24px}
#win p{margin:8px 0 14px;opacity:.9}
.stars{font-size:44px;letter-spacing:6px;line-height:1}
.stars span{display:inline-block;color:#ffffff33}
.stars span.on{color:#ffd23f;text-shadow:0 0 14px #ffd23f99;animation:pop .5s cubic-bezier(.2,1.6,.4,1) both}
.stars span.on:nth-child(2){animation-delay:.25s}.stars span.on:nth-child(3){animation-delay:.5s}
@keyframes pop{from{transform:scale(0) rotate(-90deg)}to{transform:scale(1) rotate(0)}}
.winbtns{display:flex;gap:8px}.winbtns button{flex:1;padding:0 4px}
#toast{position:absolute;top:8px;left:50%;transform:translateX(-50%);background:var(--panel);border:1px solid var(--acc);padding:8px 14px;border-radius:20px;font-weight:700;z-index:4;pointer-events:none}
#toast[hidden]{display:none}
@media (min-width:700px){#pad,nav,.hint{max-width:560px;margin-left:auto;margin-right:auto;width:100%}#scene{--s:min(11vw,11vh,80px)}.scroll{max-width:620px;width:100%;margin:0 auto}nav.foot{max-width:620px;margin:0 auto;width:100%}}
@media (max-height:520px) and (orientation:landscape){header.top{padding:4px 12px}#pad{grid-template-columns:repeat(12,1fr)}.hint{display:none}}

.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
h1.logo{display:flex;justify-content:center;line-height:0}
h1.logo img{height:clamp(96px,22vh,180px);width:auto;max-width:100%;border-radius:14px}
#s-home header.top{padding-bottom:2px}
@media (max-height:520px) and (orientation:landscape){h1.logo img{height:clamp(56px,20vh,90px)}}
h1.logo img{border-radius:22px;-webkit-mask-image:radial-gradient(ellipse 75% 72% at 50% 50%,#000 78%,transparent 100%);mask-image:radial-gradient(ellipse 75% 72% at 50% 50%,#000 78%,transparent 100%)}
body:has(#s-home.on) #bg{background:radial-gradient(circle at 50% 75%,var(--bg2),var(--bg1) 70%)}
h1.logo img{-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000 70%,transparent 100%);mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000 70%,transparent 100%)}

#s-game.nopad #pad{display:none}
#s-game.nopad #scene{--s:min(20vw,14vh,110px)}
@media (min-width:700px){#s-game.nopad #scene{--s:min(14vw,14vh,110px)}}
#stage.grabbing{cursor:grabbing}#stage.canturn{cursor:pointer}
.cubie.lt .f i{filter:brightness(1.18);box-shadow:inset 0 0 0 3px rgba(255,255,255,.75)}
.f.hov i{box-shadow:inset 0 0 0 3px #fff,0 0 10px #fff}
#dragTip{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);z-index:6;display:flex;gap:10px;align-items:center;background:rgba(10,14,40,.92);border:2px solid var(--acc);border-radius:14px;padding:8px 10px 8px 14px;font-size:13px;width:max-content;max-width:calc(100% - 20px);box-shadow:0 6px 18px rgba(0,0,0,.4)}
#dragTip[hidden]{display:none}
#dragTip button{flex:none;padding:6px 10px;min-height:0;font-size:13px}