/* Nested If Arena · styles */
:root{color-scheme:light}
[hidden]{display:none!important}
/* Arcade cabinet for code: a world map that unlocks, a dark editor on the left, the answer pad on the right, a reward drawer from below. */
:root{
  --bg:#EDF2F8; --surface:#FFFFFF; --surface-2:#F4F7FB; --ink:#0D1B2E; --muted:#56677D; --line:#D5DFEB;
  --blue:#006DAF; --cyan:#1FA3D8; --gold:#D99500; --gold-soft:#FFF3D3; --good:#12915F; --good-soft:#E2F5EC; --bad:#CF3A49; --bad-soft:#FCE8EA;
  --code-bg:#0C1522; --code-ink:#E4ECF6; --code-mute:#6E8199; --code-line:#1A293C; --guide:rgba(110,193,255,.16);
  --syn-kw:#6EC1FF; --syn-str:#FFC86B; --syn-num:#A8E37E; --syn-fn:#C9A8FF; --syn-op:#9FB3C8;
  --ran:#3FB5E5; --shadow:0 1px 2px rgba(13,27,46,.05),0 14px 34px -16px rgba(13,27,46,.22);
  --f-display:"Sora",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-body:"DM Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.23,1,.32,1); --spring:cubic-bezier(.34,1.56,.64,1);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#07101C; --surface:#0E1A2B; --surface-2:#13233A; --ink:#E7EFF9; --muted:#91A5BE; --line:#20344F;
  --blue:#4BA6E8; --cyan:#47C1EE; --gold:#F5B523; --gold-soft:rgba(245,181,35,.14); --good:#2BC184; --good-soft:rgba(43,193,132,.14); --bad:#F06171; --bad-soft:rgba(240,97,113,.15);
  --code-bg:#050C16; --code-line:#14233A; --shadow:0 1px 2px rgba(0,0,0,.3),0 18px 40px -18px rgba(0,0,0,.7); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#07101C; --surface:#0E1A2B; --surface-2:#13233A; --ink:#E7EFF9; --muted:#91A5BE; --line:#20344F;
  --blue:#4BA6E8; --cyan:#47C1EE; --gold:#F5B523; --gold-soft:rgba(245,181,35,.14); --good:#2BC184; --good-soft:rgba(43,193,132,.14); --bad:#F06171; --bad-soft:rgba(240,97,113,.15);
  --code-bg:#050C16; --code-line:#14233A; --shadow:0 1px 2px rgba(0,0,0,.3),0 18px 40px -18px rgba(0,0,0,.7); color-scheme:dark}

*{box-sizing:border-box}
.code,.lines,.dcard,.o-out,.chip,.ocard,.ask code,.test,.target,code,.rung .kw,.wslot{font-variant-ligatures:none;font-feature-settings:"liga" 0,"calt" 0}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.5 var(--f-body);-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(color-mix(in srgb,var(--blue) 12%,transparent) 1px,transparent 1.3px);background-size:22px 22px}
button{font:inherit;color:inherit}
code{font-family:var(--f-mono);font-size:.9em;padding:.1em .35em;border-radius:5px;background:color-mix(in srgb,var(--blue) 10%,transparent)}
:focus-visible{outline:2.5px solid var(--cyan);outline-offset:2px}
.wrap{max-width:1240px;margin:0 auto;padding-inline:clamp(16px,3vw,32px)}
svg.i{width:1.1em;height:1.1em;flex:0 0 auto;display:block}

/* ---------- top bar ---------- */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:12px;padding-block:10px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font:800 17px/1 var(--f-display);letter-spacing:-.02em;background:none;border:0;padding:4px;cursor:pointer;margin-right:auto}
.brand svg{width:30px;height:30px}
.stat{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line);font:700 15px/1 var(--f-mono);font-variant-numeric:tabular-nums}
.stat small{font:600 11px/1 var(--f-body);color:var(--muted);letter-spacing:.04em}
.stat.xp svg{color:var(--gold)}
.stat.streak svg{color:var(--muted);transition:color .3s,transform .3s var(--spring)}
.stat.streak.hot svg{color:#FF7A1A;transform:scale(1.18)}
.stat.streak .mult{display:none;padding:3px 6px;border-radius:7px;background:#FF7A1A;color:#fff;font-size:12px}
.stat.streak.hot .mult{display:inline-block}
.rankchip{display:grid;gap:5px;min-width:126px;height:38px;align-content:center;padding:0 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.rankchip b{font:700 12.5px/1 var(--f-display);letter-spacing:-.01em}
.rankbar{height:4px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.rankbar i{display:block;height:100%;width:var(--p,0%);background:linear-gradient(90deg,var(--gold),#FFCF5A);border-radius:inherit;transition:width .8s var(--ease)}
.iconbtn{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer;color:var(--muted)}
.iconbtn:hover{color:var(--ink)}
.bump{animation:bump .5s var(--spring)}

/* ---------- buttons ---------- */
.btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border-radius:14px;border:1px solid var(--line);background:var(--surface);
  font:700 15px/1 var(--f-display);letter-spacing:-.01em;cursor:pointer;transition:transform .15s var(--ease),background-color .2s,border-color .2s,box-shadow .2s,opacity .2s}
.btn:hover{border-color:color-mix(in srgb,var(--blue) 45%,var(--line))}
.btn:active{transform:translateY(2px)}
.btn.primary{background:var(--blue);color:#fff;border-color:transparent;box-shadow:0 4px 0 color-mix(in srgb,var(--blue) 60%,#000)}
.btn.primary:active{box-shadow:0 1px 0 color-mix(in srgb,var(--blue) 60%,#000)}
.btn.gold{background:var(--gold);color:#1A1200;border-color:transparent;box-shadow:0 4px 0 color-mix(in srgb,var(--gold) 55%,#000)}
.btn.good{background:var(--good);color:#fff;border-color:transparent;box-shadow:0 4px 0 color-mix(in srgb,var(--good) 55%,#000)}
.btn.badc{background:var(--bad);color:#fff;border-color:transparent;box-shadow:0 4px 0 color-mix(in srgb,var(--bad) 55%,#000)}
.btn:disabled{opacity:.42;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:transparent}
.linkbtn{appearance:none;background:none;border:0;padding:6px 2px;color:var(--muted);font:600 13px var(--f-body);cursor:pointer;text-decoration:underline;text-underline-offset:3px}

/* ---------- home ---------- */
.home{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:clamp(20px,4vw,48px);padding-block:clamp(22px,4vh,44px) 60px;align-items:start}
.hero .eyebrow{font:700 12px/1 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}
.hero h1{margin:.45em 0 .25em;font:800 clamp(34px,4.6vw,60px)/1 var(--f-display);letter-spacing:-.045em;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero p{margin:0 0 20px;max-width:46ch;color:var(--muted);font-size:clamp(16px,1.3vw,18px)}
.hero-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.map{position:relative;margin-top:30px;display:grid;gap:14px;max-width:640px}
.map svg.trail{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.trail .base{fill:none;stroke:var(--line);stroke-width:4;stroke-dasharray:2 10;stroke-linecap:round}
.trail .done{fill:none;stroke:var(--gold);stroke-width:4;stroke-linecap:round}
.node{position:relative;z-index:1;width:min(100%,430px);display:grid;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:14px;padding:12px 16px 12px 12px;
  border-radius:20px;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);cursor:pointer;text-align:left;transition:transform .25s var(--spring),border-color .2s}
.node:nth-child(even){justify-self:end}
.node:hover:not(.locked){transform:translateY(-3px) rotate(-.4deg);border-color:color-mix(in srgb,var(--blue) 50%,var(--line))}
.node .orb{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font:800 24px/1 var(--f-display);color:#fff;
  background:radial-gradient(circle at 35% 30%,color-mix(in srgb,var(--cyan) 85%,#fff),var(--blue));box-shadow:0 5px 0 color-mix(in srgb,var(--blue) 55%,#000),inset 0 -6px 12px rgba(0,0,0,.18)}
.node.cleared .orb{background:radial-gradient(circle at 35% 30%,#FFE08A,var(--gold));color:#2A1C00;box-shadow:0 5px 0 color-mix(in srgb,var(--gold) 55%,#000),inset 0 -6px 12px rgba(0,0,0,.14)}
.node.locked{cursor:not-allowed;opacity:.62}
.node.locked .orb{background:var(--surface-2);color:var(--muted);box-shadow:inset 0 0 0 2px var(--line)}
.node.next .orb{animation:glow 2.2s ease-in-out infinite}
.node h3{margin:0;font:700 17px/1.15 var(--f-display);letter-spacing:-.02em}
.node p{margin:3px 0 0;font-size:13.5px;color:var(--muted)}
.stars{display:flex;gap:2px;color:var(--line)}
.stars svg{width:20px;height:20px}
.stars .on{color:var(--gold)}
.node.arcade .orb{background:radial-gradient(circle at 35% 30%,#FF9F5A,#E8551B);box-shadow:0 5px 0 #9A3510,inset 0 -6px 12px rgba(0,0,0,.2)}
.node .best{font:700 13px var(--f-mono);color:var(--muted);text-align:right}
.side{display:grid;gap:16px;position:sticky;top:84px}
.card{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:18px;box-shadow:var(--shadow)}
.card h4{margin:0 0 12px;font:700 13px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.skill{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 10px;align-items:center;margin-bottom:11px}
.skill span{font:600 14px var(--f-display);letter-spacing:-.01em}
.skill b{font:700 12.5px var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.skill .bar{grid-column:1/-1;height:8px;border-radius:8px;background:var(--surface-2);overflow:hidden}
.skill .bar i{display:block;height:100%;width:var(--p);border-radius:inherit;background:linear-gradient(90deg,var(--cyan),var(--blue));transition:width 1s var(--ease)}
.skill.full .bar i{background:linear-gradient(90deg,#FFCF5A,var(--gold))}
.legend{display:grid;gap:8px;font-size:14px;color:var(--muted)}
.legend div{display:flex;gap:10px;align-items:center}
.legend i{width:26px;height:20px;border-radius:6px;flex:0 0 auto}
.lg-ran{background:color-mix(in srgb,var(--ran) 28%,var(--code-bg));box-shadow:inset 3px 0 0 var(--ran)}
.lg-never{background:var(--code-bg);opacity:.35}
.lg-dot{background:var(--code-bg);position:relative}
.lg-dot::after{content:"";position:absolute;left:8px;top:5px;width:10px;height:10px;border-radius:50%;background:var(--gold);box-shadow:0 0 10px var(--gold)}

/* ---------- power-up ---------- */
.power{max-width:860px;margin:0 auto;padding-block:clamp(24px,5vh,56px) 60px;display:grid;gap:22px}
.power .eyebrow{font:700 12px/1 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.power h2{margin:0;font:800 clamp(32px,4.4vw,54px)/1 var(--f-display);letter-spacing:-.045em}
.rulecard{position:relative;overflow:hidden;padding:22px 24px 22px 74px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);font-size:clamp(17px,1.6vw,21px);line-height:1.45;text-wrap:pretty}
.rulecard::before{content:"";position:absolute;left:22px;top:22px;width:34px;height:34px;border-radius:10px;background:var(--gold-soft);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23D99500'%3E%3Cpath d='M13 2 4 14h7l-1 8 9-12h-7z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:20px}
.power-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.power-row span{color:var(--muted);font-size:14px}

/* ---------- question ---------- */
.qtop{display:flex;align-items:center;gap:14px;padding-block:16px 6px}
.qtop .where{font:700 13px/1.2 var(--f-mono);letter-spacing:.06em;color:var(--muted);white-space:nowrap}
.segs{flex:1;display:flex;gap:5px;min-width:0}
.segs i{flex:1;height:10px;border-radius:10px;background:var(--surface);border:1px solid var(--line);transition:background-color .4s,border-color .4s}
.segs i.ok{background:var(--good);border-color:transparent}
.segs i.redo{background:var(--bad);border-color:transparent}
.segs i.fixed{background:linear-gradient(90deg,var(--bad),var(--good));border-color:transparent}
.segs i.cur{border-color:var(--blue);box-shadow:0 0 0 2px color-mix(in srgb,var(--blue) 30%,transparent)}
.qgrid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(16px,2.6vw,32px);padding-block:12px 150px;align-items:start}
.qside{display:grid;gap:16px;min-width:0}
.qchip{display:inline-flex;align-items:center;gap:8px;width:fit-content;padding:6px 11px;border-radius:999px;font:700 12px/1 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:color-mix(in srgb,var(--blue) 11%,transparent)}
.qchip.retry{color:var(--bad);background:var(--bad-soft)}
.qtitle{margin:0;font:700 clamp(21px,2vw,28px)/1.2 var(--f-display);letter-spacing:-.03em;text-wrap:balance}
.qhelp{margin:-6px 0 0;color:var(--muted);font-size:14.5px}
.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.actions .btn.primary{flex:1;min-width:160px}
.hintbox{padding:14px 16px;border-radius:16px;background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 40%,transparent);font-size:15px;animation:pop .45s var(--spring)}
.hintbox b{color:var(--gold)}

/* code panel */
.code{border-radius:22px;overflow:hidden;background:var(--code-bg);color:var(--code-ink);box-shadow:0 30px 60px -30px rgba(5,12,22,.6),inset 0 0 0 1px rgba(255,255,255,.04)}
.code-bar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--code-line);font:600 12.5px/1 var(--f-mono);color:var(--code-mute)}
.code-bar .dots{display:flex;gap:6px}
.code-bar .dots i{width:10px;height:10px;border-radius:50%;background:#2A3B52}
.code-bar .dots i:first-child{background:#E5545E}.code-bar .dots i:nth-child(2){background:#F3B33D}.code-bar .dots i:nth-child(3){background:#3CC28A}
.code-bar .vars{margin-left:auto;color:var(--syn-str);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.lines{position:relative;list-style:none;margin:0;padding:12px 0;font:500 clamp(14px,1.15vw,16.5px)/1.75 var(--f-mono);overflow-x:auto}
.ln{position:relative;display:grid;grid-template-columns:3.2em minmax(max-content,1fr) auto;align-items:center;padding-right:12px;transition:opacity .35s,background-color .3s}
.ln .no{text-align:right;padding-right:1.1em;color:var(--code-mute);user-select:none;font-size:.85em}
.src{position:relative;white-space:pre;padding-left:calc(var(--d,0) * 4ch)}
.src::before{content:"";position:absolute;left:0;top:-3px;bottom:-3px;width:calc(var(--d,0) * 4ch);background:repeating-linear-gradient(to right,var(--guide) 0 1px,transparent 1px 4ch)}
.k{color:var(--syn-kw);font-weight:700}.s{color:var(--syn-str)}.n{color:var(--syn-num)}.f{color:var(--syn-fn)}.o{color:var(--syn-op)}
.slot{display:inline-block;min-width:5ch;padding:0 .4em;border-radius:6px;border:1.5px dashed var(--syn-str);color:var(--syn-str);text-align:center;line-height:1.35}
.slot.filled{border-style:solid;background:rgba(255,200,107,.12);animation:pop .4s var(--spring)}
.tagz{display:flex;gap:6px;justify-content:flex-end}
.tag{font:700 11px/1 var(--f-mono);letter-spacing:.04em;padding:4px 7px;border-radius:6px;white-space:nowrap;animation:pop .35s var(--spring)}
.tag.good{background:rgba(60,194,138,.18);color:#5BE0A4}.tag.bad{background:rgba(240,97,113,.2);color:#FF8E9A}.tag.mute{background:rgba(159,179,200,.14);color:var(--syn-op)}.tag.gold{background:rgba(245,181,35,.18);color:#FFCF5A}
.ln.ran{background:linear-gradient(90deg,rgba(63,181,229,.2),rgba(63,181,229,.04) 70%);box-shadow:inset 3px 0 0 var(--ran)}
.ln.never{opacity:.32}
.ln.err{background:rgba(240,97,113,.16);box-shadow:inset 3px 0 0 #F06171}
.ln.flash .src{animation:flash .6s ease}
.ln.tappable{cursor:pointer}
.ln.tappable:hover{background:rgba(110,193,255,.08)}
.ln.tappable .src{border-radius:6px}
.ln.tappable::after{content:"tap";position:absolute;right:12px;font:600 10px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--code-mute);opacity:.7}
.ln.picked{background:rgba(245,181,35,.14);box-shadow:inset 3px 0 0 var(--gold)}
.ln.picked::after{content:"runs";color:#FFCF5A;opacity:1}
.ln.mark-ok{box-shadow:inset 3px 0 0 #3CC28A}
.ln.mark-bad{background:rgba(240,97,113,.16)}
.ln.mark-miss{outline:1.5px dashed #3CC28A;outline-offset:-2px}
.pdot{position:absolute;left:.95em;top:0;width:13px;height:13px;margin-top:-6.5px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(245,181,35,.25),0 0 18px 4px rgba(245,181,35,.55);
  opacity:0;transition:transform .32s var(--ease),opacity .3s;pointer-events:none;z-index:2}
.console{border-top:1px solid var(--code-line);padding:10px 16px 14px;min-height:72px}
.con-head{display:flex;justify-content:space-between;font:600 11px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--code-mute);margin-bottom:8px}
.con-out{margin:0;font:500 14.5px/1.6 var(--f-mono);white-space:pre-wrap;color:#D7F2E4;min-height:1.6em}
.con-out .con-err{color:#FF8E9A;font-weight:700}
.con-out .con-note{color:var(--code-mute);font-style:italic}

/* options */
.opts{display:grid;gap:10px}
.opt{position:relative;display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;align-items:center;text-align:left;padding:12px 14px;border-radius:16px;border:2px solid var(--line);background:var(--surface);
  cursor:pointer;box-shadow:0 3px 0 var(--line);transition:transform .15s var(--ease),border-color .15s,box-shadow .15s,background-color .2s}
.opt:hover{border-color:color-mix(in srgb,var(--blue) 50%,var(--line))}
.opt:active{transform:translateY(2px);box-shadow:0 1px 0 var(--line)}
.opt .key{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;border:1.5px solid var(--line);font:700 13px var(--f-mono);color:var(--muted)}
.opt[aria-checked="true"],.opt[aria-pressed="true"]{border-color:var(--blue);background:color-mix(in srgb,var(--blue) 8%,var(--surface));box-shadow:0 3px 0 color-mix(in srgb,var(--blue) 55%,transparent)}
.opt[aria-checked="true"] .key,.opt[aria-pressed="true"] .key{background:var(--blue);border-color:var(--blue);color:#fff}
.opt.is-ok{border-color:var(--good);background:var(--good-soft);box-shadow:0 3px 0 color-mix(in srgb,var(--good) 55%,transparent)}
.opt.is-ok .key{background:var(--good);border-color:var(--good);color:#fff}
.opt.is-bad{border-color:var(--bad);background:var(--bad-soft);box-shadow:0 3px 0 color-mix(in srgb,var(--bad) 55%,transparent)}
.opt.is-bad .key{background:var(--bad);border-color:var(--bad);color:#fff}
.opt.dim{opacity:.5}
.locked .opt,.locked .seg2 button,.locked .chip,.locked .ocard{pointer-events:none}
.o-out{margin:0;font:500 14.5px/1.5 var(--f-mono);white-space:pre-wrap}
.o-none{font:600 14.5px var(--f-body);color:var(--muted);font-style:italic}
.o-err{display:flex;align-items:center;gap:8px;font:700 14.5px var(--f-mono);color:var(--bad)}
.o-sub{display:block;margin-top:4px;font:500 12.5px var(--f-mono);color:var(--muted)}
.multi-note{font:700 12px var(--f-mono);letter-spacing:.06em;color:var(--gold);text-transform:uppercase}
.target{border-radius:16px;background:var(--code-bg);color:#D7F2E4;padding:12px 16px;font:500 15px/1.6 var(--f-mono);white-space:pre-wrap}
.target small{display:block;font:600 11px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--code-mute);margin-bottom:8px}

/* asked */
.asks{display:grid;gap:10px}
.ask{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 12px;border-radius:16px;border:2px solid var(--line);background:var(--surface)}
.ask code{background:none;padding:0;font-size:14px;white-space:pre;overflow:hidden;text-overflow:ellipsis;display:block}
.ask .lref{display:block;font:700 11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
.seg2{display:flex;padding:3px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line)}
.seg2 button{appearance:none;border:0;background:none;padding:8px 11px;border-radius:9px;font:700 13px var(--f-display);cursor:pointer;color:var(--muted);white-space:nowrap;transition:background-color .2s,color .2s}
.seg2 button[aria-pressed="true"]{background:var(--blue);color:#fff}
.seg2 button[data-v="0"][aria-pressed="true"]{background:var(--ink);color:var(--surface)}
.ask.is-ok{border-color:var(--good);background:var(--good-soft)}
.ask.is-bad{border-color:var(--bad);background:var(--bad-soft)}

/* fill / order / tests */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{appearance:none;padding:12px 16px;border-radius:14px;border:2px solid var(--line);background:var(--surface);font:600 15px var(--f-mono);cursor:pointer;box-shadow:0 3px 0 var(--line);transition:transform .15s var(--ease),border-color .15s}
.chip:hover{border-color:color-mix(in srgb,var(--blue) 50%,var(--line))}
.chip[aria-pressed="true"]{border-color:var(--blue);background:color-mix(in srgb,var(--blue) 9%,var(--surface));box-shadow:0 3px 0 color-mix(in srgb,var(--blue) 55%,transparent)}
.chip.is-ok{border-color:var(--good);background:var(--good-soft)}
.chip.is-bad{border-color:var(--bad);background:var(--bad-soft)}
.tests{border-radius:18px;border:1px solid var(--line);background:var(--surface);overflow:hidden}
.tests h5{margin:0;padding:10px 14px;font:700 11.5px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line);display:flex;justify-content:space-between}
.test{display:grid;grid-template-columns:28px minmax(0,1fr) minmax(0,1fr);gap:10px;align-items:center;padding:9px 14px;border-bottom:1px solid var(--line);font:500 13.5px/1.35 var(--f-mono)}
.test:last-child{border-bottom:0}
.test .st{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;border:2px solid var(--line);color:#fff}
.test .exp{white-space:pre-wrap;color:var(--muted)}
.test .got{display:block;color:var(--bad);font-size:12px;margin-top:2px}
.test.pass .st{background:var(--good);border-color:var(--good);animation:pop .35s var(--spring)}
.test.fail .st{background:var(--bad);border-color:var(--bad);animation:pop .35s var(--spring)}
.test.run{background:color-mix(in srgb,var(--blue) 7%,transparent)}
.ladder{display:grid;gap:8px}
.rung{display:grid;grid-template-columns:62px minmax(0,1fr);gap:10px;align-items:stretch}
.rung .kw{display:grid;place-items:center;border-radius:12px;background:var(--code-bg);color:var(--syn-kw);font:700 14px var(--f-mono)}
.rung.fixed{opacity:.75}
.rung.fixed .ocard{cursor:default;box-shadow:none;border-style:dashed}
.ocard{appearance:none;text-align:left;display:grid;gap:2px;padding:10px 14px;border-radius:14px;border:2px solid var(--line);background:var(--surface);font:600 14.5px/1.4 var(--f-mono);cursor:pointer;box-shadow:0 3px 0 var(--line);transition:border-color .15s,background-color .15s}
.ocard small{font:500 13px var(--f-mono);color:var(--muted)}
.ocard[aria-pressed="true"]{border-color:var(--gold);background:var(--gold-soft);box-shadow:0 3px 0 color-mix(in srgb,var(--gold) 60%,transparent);animation:lift .3s var(--spring) forwards}

/* stage 1 + new types */
.qgrid.solo{grid-template-columns:minmax(0,760px);justify-content:center}
.qgrid.wide{grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr)}
.qchip.concept{color:var(--gold);background:var(--gold-soft)}
.segs{align-items:center}
.sdiv{flex:0 0 4px;height:20px;margin:0 3px;border-radius:3px;background:var(--gold)}
.o-text{font:600 16px/1.4 var(--f-body)}
.o-big{font:800 22px/1 var(--f-display);letter-spacing:-.02em}
.numgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
.ask.tf{grid-template-columns:minmax(0,1fr) auto}
.tf-text{margin:0;font:500 16px/1.45 var(--f-body)}
.tf-fix{grid-column:1/-1;font:700 12.5px var(--f-mono);color:var(--bad)}
.sentence{margin:0;padding:20px 22px;border-radius:20px;background:var(--surface);border:1px solid var(--line);font:500 clamp(18px,1.8vw,23px)/2.2 var(--f-body);box-shadow:var(--shadow);text-wrap:pretty}
.wslot{appearance:none;display:inline-block;min-width:7ch;height:1.75em;margin:0 .15em;padding:0 .55em;border:0;border-bottom:3px solid var(--line);border-radius:9px 9px 3px 3px;
  background:var(--surface-2);font:700 .88em/1.75em var(--f-mono);color:var(--blue);cursor:pointer;vertical-align:baseline;transition:background-color .2s,border-color .2s}
.wslot.sel{border-bottom-color:var(--gold);background:var(--gold-soft);box-shadow:0 0 0 2px color-mix(in srgb,var(--gold) 35%,transparent)}
.wslot.filled{border-bottom-color:var(--blue);background:color-mix(in srgb,var(--blue) 9%,var(--surface))}
.wslot.is-ok{border-bottom-color:var(--good);background:var(--good-soft);color:var(--good)}
.wslot.is-bad{border-bottom-color:var(--bad);background:var(--bad-soft);color:var(--bad)}
.wslot s{opacity:.55;margin-right:.3em}
.wslot.pop{animation:pop .35s var(--spring)}
.chip.used{opacity:.3}
.chip:disabled{cursor:default}
.seg2.wide{margin-top:8px}.seg2.wide button{flex:1;padding:10px 6px}
.seg2 button.is-ok{background:var(--good)!important;color:#fff!important}
.seg2 button.is-bad{background:var(--bad)!important;color:#fff!important}
.bslot{appearance:none;cursor:pointer;font:inherit;background:transparent;min-width:5ch;color:var(--syn-str)}
.bslot.sel{border-style:solid;background:rgba(245,181,35,.2);box-shadow:0 0 0 3px rgba(245,181,35,.28)}
.bslot.filled{color:var(--code-ink)}
.code[data-mode="spot"] .ln.tappable::after,.code[data-mode="bug"] .ln.tappable::after{content:""}
.code[data-mode="spot"] .ln.picked::after{content:"error here?"}
.code[data-mode="bug"] .ln.picked::after{content:"bug here?"}
.ln.fixed .src{animation:flash .8s ease}
.stages{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.stages div{display:grid;gap:4px;padding:16px 18px;border-radius:18px;background:var(--surface);border:1px solid var(--line)}
.stages b{font:700 12px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.stages div+div b{color:var(--blue)}
.stages span{font:700 18px var(--f-display);letter-spacing:-.02em}
.stages small{font-size:13px;color:var(--muted)}
.dgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-content:start}
.dmob{display:none;grid-column:1/-1}
.dcard{display:flex;flex-direction:column;min-width:0;border-radius:18px;background:var(--code-bg);color:var(--code-ink);border:3px solid transparent;cursor:pointer;overflow:hidden;
  box-shadow:0 18px 40px -24px rgba(5,12,22,.7);transition:transform .25s var(--spring),border-color .2s,opacity .3s}
.dcard:hover{transform:translateY(-3px)}
.dcard[aria-pressed="true"]{border-color:var(--gold)}
.dcard.is-ok{border-color:var(--good)}.dcard.is-bad{border-color:var(--bad)}.dcard.dim{opacity:.55}
.dhead{display:flex;justify-content:space-between;align-items:center;padding:9px 12px;border-bottom:1px solid var(--code-line);font:700 13px var(--f-display);color:#fff}
.dhead .key{width:24px;height:24px;border-radius:7px;display:grid;place-items:center;border:1px solid var(--code-line);font:700 12px var(--f-mono);color:var(--code-mute)}
.dcard[aria-pressed="true"] .dhead .key{background:var(--gold);color:#1A1200;border-color:transparent}
.lines.mini{font-size:12.5px;line-height:1.6;padding:8px 0}
.lines.mini .ln{grid-template-columns:2.4em minmax(max-content,1fr) auto}
.dverdict{display:block;padding:8px 12px;font:700 12px/1.4 var(--f-mono);border-top:1px solid var(--code-line)}
.dverdict.ok{color:#5BE0A4}.dverdict.bad{color:#FF8E9A}

/* adaptivity, new types, survival */
.mm{display:flex;align-items:center;gap:8px;flex:0 0 auto;font:600 12px var(--f-mono);color:var(--muted);white-space:nowrap}
.mm span:first-child{max-width:14ch;overflow:hidden;text-overflow:ellipsis}
.mbar{position:relative;display:block;width:110px;height:9px;border-radius:9px;background:var(--surface);border:1px solid var(--line)}
.mbar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--cyan),var(--blue));transition:width .9s var(--ease)}
.mbar em,.mbar2 em{position:absolute;left:80%;top:-4px;bottom:-4px;width:2px;border-radius:2px;background:var(--gold)}
.mbar2{position:relative}
.mm.done .mbar i{background:linear-gradient(90deg,#FFCF5A,var(--gold))}
.mm b{color:var(--ink);font-variant-numeric:tabular-nums;min-width:3.5ch}
.nmm{display:block;width:120px;height:5px;margin-top:7px;border-radius:5px;background:var(--surface-2);overflow:hidden}
.nmm i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:inherit}
.nmm.done i{background:var(--gold)}
.nmt{display:block;margin-top:3px;font:600 11px var(--f-mono);color:var(--muted)}
.qchip.adapt{color:#7C3AED;background:rgba(124,58,237,.13)}
.qchip.boss{color:#fff;background:var(--bad)}
.ln.target{outline:2px solid var(--gold);outline-offset:-2px;background:rgba(245,181,35,.12)}
.ln.movable{outline:1.5px dashed var(--gold);outline-offset:-2px}
.mv{display:inline-flex;gap:4px}
.mv button{width:30px;height:26px;display:grid;place-items:center;padding:0;border-radius:7px;border:1px solid rgba(245,181,35,.55);background:rgba(245,181,35,.16);color:#FFCF5A;cursor:pointer}
.mv button:disabled{opacity:.3;cursor:default}
.mv button svg{width:14px;height:14px}
.code[data-mode="traceorder"] .ln.tappable::after{content:""}
.yn{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.yn .opt{min-height:86px}
.tlabel{font:700 12px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.tin{width:100%;min-height:120px;resize:vertical;padding:14px 16px;border-radius:16px;border:2px solid var(--line);background:var(--code-bg);color:#D7F2E4;font:500 15px/1.6 var(--f-mono);caret-color:var(--gold)}
.tin:focus{outline:none;border-color:var(--blue)}
.tin:disabled{opacity:.55}
.toggle{display:flex;align-items:center;gap:10px;font:600 14px var(--f-body);color:var(--muted);cursor:pointer}
.toggle input{width:18px;height:18px;accent-color:var(--blue)}
.ttab{display:grid;gap:8px}
.trow{display:grid;gap:8px;padding:10px 12px;border-radius:16px;border:2px solid var(--line);background:var(--surface)}
.trow.is-ok{border-color:var(--good);background:var(--good-soft)}.trow.is-bad{border-color:var(--bad);background:var(--bad-soft)}
.tvars{font:700 13px var(--f-mono)}
.tops{display:flex;flex-wrap:wrap;gap:6px}
.chip.sm{padding:8px 11px;font-size:13px;border-radius:11px;box-shadow:0 2px 0 var(--line)}
.mgrid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mcol{display:grid;gap:8px;align-content:start}
.mitem{appearance:none;position:relative;text-align:left;padding:12px 12px 12px 42px;min-height:58px;border-radius:14px;border:2px solid var(--line);background:var(--surface);font:600 13.5px/1.35 var(--f-mono);cursor:pointer;box-shadow:0 3px 0 var(--line)}
.mitem::before{content:attr(data-pn);position:absolute;left:10px;top:50%;translate:0 -50%;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font:800 12px var(--f-display);color:#fff;background:var(--line)}
.mitem.sel{border-color:var(--ink);box-shadow:0 3px 0 var(--ink)}
.mitem[data-p="0"]{border-color:var(--blue)}.mitem[data-p="0"]::before{background:var(--blue)}
.mitem[data-p="1"]{border-color:var(--gold)}.mitem[data-p="1"]::before{background:var(--gold)}
.mitem[data-p="2"]{border-color:#8B5CF6}.mitem[data-p="2"]::before{background:#8B5CF6}
.mitem.is-ok{background:var(--good-soft)}.mitem.is-bad{background:var(--bad-soft)}
.mitem small{display:block;margin-top:4px;color:var(--bad);font-size:12px}
.dcard.static{cursor:default}.dcard.static:hover{transform:none}
.target{white-space:pre-wrap}
.shud{display:flex;align-items:center;gap:14px;padding-block:14px 6px;flex-wrap:wrap}
.hearts{display:flex;gap:4px}
.heart{width:30px;height:30px;color:var(--line);transition:color .3s}
.heart svg{width:100%;height:100%}
.heart.on{color:#E8384F;filter:drop-shadow(0 3px 6px rgba(232,56,79,.35))}
.heart.break{animation:hbreak .6s ease forwards}
.heart.regen{animation:hregen .9s var(--spring) .3s both}
.hearts.big{justify-content:center}.hearts.big .heart{width:52px;height:52px}
.swave{display:grid;gap:5px}
.swave b{font:800 14px var(--f-display)}
.swave span{display:flex;gap:4px}
.swave i{width:18px;height:7px;border-radius:7px;background:var(--surface);border:1px solid var(--line)}
.swave i.done{background:var(--good);border-color:transparent}
.swave i.cur{border-color:var(--blue);background:color-mix(in srgb,var(--blue) 30%,transparent)}
.swave i.boss{width:28px}
.swave i.boss.cur{background:var(--bad);border-color:transparent}
.stimer{flex:1;display:flex;align-items:center;gap:10px;min-width:150px}
.stimer .tb{flex:1;height:12px;border-radius:12px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
.stimer .tb i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--bad),var(--gold) 40%,var(--good));transform-origin:left;border-radius:inherit}
.stimer b{font:800 20px var(--f-mono);min-width:2.2ch;text-align:right;font-variant-numeric:tabular-nums}
.stimer.off b{font:600 12px var(--f-mono);color:var(--muted)}
.stimer b.low{color:var(--bad);animation:beat .6s ease-in-out infinite}
.stimer.off .tb{opacity:.3}
.sscore{text-align:right}.sscore b{display:block;font:800 22px/1 var(--f-display);font-variant-numeric:tabular-nums}.sscore small{font:700 11px var(--f-mono);color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
.rules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.rules div{display:grid;grid-template-columns:34px minmax(0,1fr);gap:2px 12px;padding:16px;border-radius:18px;background:var(--surface);border:1px solid var(--line)}
.rules svg{grid-row:span 2;width:30px;height:30px;color:var(--bad)}
.rules b{font:700 16px var(--f-display)}.rules span{font-size:14px;color:var(--muted)}
.survcard{border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}
.survcard h4{color:var(--bad)}
.survcard .tally b{font-size:22px}
@keyframes hbreak{30%{transform:scale(1.45) rotate(-12deg)}100%{transform:scale(.8) rotate(18deg);opacity:.35}}
@keyframes hregen{0%{transform:scale(0)}100%{transform:scale(1)}}

/* drawer */
.drawer{position:fixed;left:0;right:0;bottom:0;z-index:60;transform:translateY(110%);transition:transform .5s var(--ease);padding-bottom:env(safe-area-inset-bottom,0px);
  border-top:3px solid var(--good);background:var(--surface);box-shadow:0 -20px 50px -20px rgba(13,27,46,.35)}
.drawer.open{transform:none}
.drawer.bad{border-top-color:var(--bad)}
.dr-in{max-width:1240px;margin:0 auto;padding:18px clamp(16px,3vw,32px) 20px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px 28px;align-items:center}
.dr-head{display:flex;align-items:center;gap:14px}
.dr-icon{width:52px;height:52px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--good);animation:pop .5s var(--spring)}
.drawer.bad .dr-icon{background:var(--bad)}
.dr-icon svg{width:28px;height:28px}
.dr-head h3{margin:0;font:800 clamp(20px,2vw,26px)/1.1 var(--f-display);letter-spacing:-.03em;color:var(--good)}
.drawer.bad .dr-head h3{color:var(--bad)}
.dr-xp{display:flex;gap:10px;align-items:center;margin-top:4px;font:700 14px var(--f-mono);color:var(--gold)}
.dr-xp .combo{padding:3px 8px;border-radius:8px;background:#FF7A1A;color:#fff}
.dr-body{grid-column:1;display:grid;gap:8px;font-size:15.5px;max-width:78ch}
.dr-body p{margin:0}
.dr-ans{display:flex;gap:10px;align-items:flex-start;flex-wrap:wrap;font-size:14.5px}
.dr-ans>b{font:700 12px/2 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.dr-ans .o-out{background:var(--surface-2);padding:4px 10px;border-radius:8px}
.dr-back{font:600 13px var(--f-mono);color:var(--bad)}
.dr-act{grid-column:2;grid-row:1/span 2;display:grid;gap:10px;min-width:220px}

/* world complete */
section.done{max-width:640px;margin:0 auto;padding-block:clamp(28px,6vh,70px) 60px;text-align:center;display:grid;gap:18px;justify-items:center}
section.done .eyebrow{font:700 12px/1 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
section.done h2{margin:0;font:800 clamp(34px,5vw,58px)/1 var(--f-display);letter-spacing:-.045em}
.bigstars{display:flex;gap:10px;color:var(--line)}
.bigstars svg{width:clamp(56px,9vw,84px);height:clamp(56px,9vw,84px)}
.bigstars .on{color:var(--gold);animation:starIn .7s var(--spring) both}
.bigstars .on:nth-child(2){animation-delay:.35s}.bigstars .on:nth-child(3){animation-delay:.7s}
.tally{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%}
.tally div{padding:14px 10px;border-radius:16px;background:var(--surface);border:1px solid var(--line)}
.tally b{display:block;font:800 26px/1 var(--f-display);letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.tally span{font:600 12px var(--f-mono);letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.badge-flawless{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--gold-soft);color:var(--gold);font:800 14px var(--f-display);animation:pop .6s var(--spring) 1s both}

/* arcade */
.arc{padding-block:16px 60px;display:grid;gap:16px;max-width:900px;margin:0 auto}
.arc-hud{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center}
.arc-time{font:800 30px/1 var(--f-mono);font-variant-numeric:tabular-nums;min-width:2.6ch}
.arc-time.low{color:var(--bad);animation:beat .6s ease-in-out infinite}
.tbar{height:14px;border-radius:14px;background:var(--surface);border:1px solid var(--line);overflow:hidden}
.tbar i{display:block;height:100%;width:100%;border-radius:inherit;background:linear-gradient(90deg,#FF9F5A,#E8551B);transform-origin:left}
.arc-score{text-align:right}
.arc-score b{display:block;font:800 30px/1 var(--f-display);letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.arc-score small{font:700 12px var(--f-mono);color:var(--muted)}
.arc-opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px}
.arc-opts .opt{min-height:74px}
.float{position:fixed;z-index:80;pointer-events:none;font:800 22px var(--f-display);color:var(--gold);text-shadow:0 2px 0 rgba(0,0,0,.15)}
.float.minus{color:var(--bad)}
.toast{position:fixed;z-index:90;left:50%;top:22%;translate:-50% 0;pointer-events:none;padding:14px 26px;border-radius:20px;font:800 clamp(24px,3.4vw,40px)/1 var(--f-display);letter-spacing:-.03em;color:#fff;
  background:linear-gradient(135deg,#FF9F5A,#E8551B);box-shadow:0 20px 50px -14px rgba(232,85,27,.7);animation:toast 1.5s var(--spring) forwards;white-space:nowrap}
.toast.rank{background:linear-gradient(135deg,#FFCF5A,var(--gold));color:#2A1C00}
#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:85}
.shake{animation:shake .45s ease}

@keyframes bump{40%{transform:scale(1.18)}}
@keyframes pop{0%{transform:scale(.6);opacity:0}100%{transform:scale(1);opacity:1}}
@keyframes lift{to{transform:translateY(-3px) rotate(-.6deg)}}
@keyframes glow{50%{box-shadow:0 5px 0 color-mix(in srgb,var(--blue) 55%,#000),0 0 0 10px color-mix(in srgb,var(--cyan) 22%,transparent)}}
@keyframes flash{30%{text-shadow:0 0 14px rgba(215,242,228,.9)}}
@keyframes shake{20%{transform:translateX(-8px)}40%{transform:translateX(7px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}
@keyframes starIn{0%{transform:scale(0) rotate(-120deg);opacity:0}100%{transform:none;opacity:1}}
@keyframes toast{0%{opacity:0;transform:scale(.4) translateY(30px)}18%{opacity:1;transform:scale(1.08)}30%{transform:scale(1)}80%{opacity:1;transform:none}100%{opacity:0;transform:translateY(-30px)}}
@keyframes beat{50%{transform:scale(1.12)}}
.enter>*{animation:rise .5s var(--ease) both}
.enter>*:nth-child(2){animation-delay:.06s}.enter>*:nth-child(3){animation-delay:.12s}.enter>*:nth-child(4){animation-delay:.18s}.enter>*:nth-child(5){animation-delay:.24s}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}

@media (max-width:980px){
  .home,.qgrid,.qgrid.wide{grid-template-columns:minmax(0,1fr)}
  .qgrid.wide .qside .qtitle{display:none}
  .dmob{display:block}
  .side{position:static}
  .dr-in{grid-template-columns:minmax(0,1fr)}
  .dr-act{grid-column:1;grid-row:auto;grid-template-columns:1fr 1fr;min-width:0}
}
@media (max-width:560px){
  .top .wrap{gap:8px}
  .rankchip{display:none}
  .brand span{display:none}
  .node{grid-template-columns:52px minmax(0,1fr) auto;gap:10px}
  .node .orb{width:52px;height:52px;font-size:20px}
  .node:nth-child(even){justify-self:stretch}
  .node{width:100%}
  .ask{grid-template-columns:minmax(0,1fr)}
  .test{grid-template-columns:24px minmax(0,1fr)}
  .test .exp{grid-column:2}
  .qtop .where{display:none}
  .dgrid,.stages,.numgrid,.rules,.mgrid{grid-template-columns:minmax(0,1fr)}
  .mm span:first-child{display:none}.mbar{width:70px}
  .shud{gap:10px}.heart{width:24px;height:24px}
  .ask.tf{grid-template-columns:minmax(0,1fr)}
  .dr-act{grid-template-columns:1fr}
}
/* code must show >= exactly as students type it */
.code *,.lines *,.dcard *,.o-out,.chip,.ocard,.ask code,.test *,.target,code,.wslot,.rung .kw{font-variant-ligatures:none!important;font-feature-settings:"liga" 0,"calt" 0!important}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ---------- sign-in, user chip, leaderboard (app build) ---------- */
.userchip{display:grid;gap:2px;height:38px;align-content:center;padding:0 12px;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer;text-align:left;max-width:180px}
.userchip b{font:700 13px/1 var(--f-display);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.userchip small{font:600 10.5px/1 var(--f-mono);color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.login{max-width:560px}
.loginlead{margin:0;color:var(--muted);font-size:17px}
.loginf{display:grid;gap:14px;padding:22px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.loginf label{display:grid;gap:6px;font:700 12px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.loginf input{font:500 17px var(--f-body);color:var(--ink);padding:12px 14px;border-radius:12px;border:2px solid var(--line);background:var(--surface-2);text-transform:none;letter-spacing:0}
.loginf input:focus{outline:none;border-color:var(--blue)}
.lgerr{margin:0;min-height:1.2em;color:var(--bad);font:600 14px var(--f-body)}
.lbtabs{display:flex;padding:3px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);margin-bottom:10px}
.lbtabs button{flex:1;appearance:none;border:0;background:none;padding:7px;border-radius:9px;font:700 13px var(--f-display);color:var(--muted);cursor:pointer}
.lbtabs button[aria-pressed="true"]{background:var(--blue);color:#fff}
.lb{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.lb li{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:10px;align-items:center;padding:7px 10px;border-radius:10px;font-size:14.5px}
.lb li:nth-child(1) .rk{background:var(--gold);color:#1A1200}.lb li:nth-child(2) .rk{background:#C9D3DF;color:#1A2433}.lb li:nth-child(3) .rk{background:#E3A877;color:#2A1300}
.lb .rk{width:24px;height:24px;border-radius:8px;display:grid;place-items:center;font:800 12px var(--f-mono);background:var(--surface-2)}
.lb .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.lb b{font:700 14px var(--f-mono);font-variant-numeric:tabular-nums}
.lb li.me{background:color-mix(in srgb,var(--blue) 12%,transparent)}
.lb li.empty{display:block;color:var(--muted)}
.lbme{margin:8px 0 0;font:600 13px var(--f-mono);color:var(--muted)}
@media (max-width:560px){.userchip small{display:none}.userchip{max-width:110px}}