/* WordCraft — student LMS skin. Dark by default, light optional. Tasteful motion, no cartoon chrome. */
@property --p{syntax:'<number>';inherits:true;initial-value:0}
:root,[data-theme=dark]{
  --bg:#0c1020;--bg2:#10162b;--sf:#151b33;--sf2:#1b2342;--sf3:#232c52;--bd:rgba(255,255,255,.08);--bd2:rgba(255,255,255,.16);
  --tx:#eaeefb;--tx2:#a2abcc;--tx3:#6f7899;--acx:#ffb020;--acc:#ffb020;--acc2:#ff7a45;--acct:#1a1203;
  --teal:#2dd4bf;--vio:#8b7cff;--red:#ff5f6d;--grn:#34d399;--blu:#4ea1ff;--shadow:0 10px 30px rgba(0,0,0,.35);
  --glass:rgba(14,19,38,.72);--hero:radial-gradient(1200px 500px at 85% -10%,rgba(139,124,255,.28),transparent 60%),radial-gradient(900px 500px at -10% 0%,rgba(255,176,32,.16),transparent 55%)
}
[data-theme=light]{
  --bg:#f9f5ea;--bg2:#f3eddf;--sf:#fefcf6;--sf2:#f9f4e8;--sf3:#f0e8d6;--bd:rgba(80,58,24,.12);--bd2:rgba(80,58,24,.26);
  --tx:#2b261d;--tx2:#5b5242;--tx3:#867b67;--acx:#9c5800;--acc:#d97706;--acc2:#dc5a1f;--acct:#ffffff;
  --teal:#0f9d92;--vio:#6a5bf0;--red:#c93a4c;--grn:#0e8f60;--blu:#2a72cf;
  --shadow:0 10px 26px rgba(90,65,25,.13);--glass:rgba(251,248,239,.9);--hero:radial-gradient(1000px 420px at 85% -10%,rgba(222,184,138,.2),transparent 60%),radial-gradient(800px 420px at -10% 0%,rgba(240,200,128,.16),transparent 55%)
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--tx);font-family:'Plus Jakarta Sans','Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}
body{background:var(--hero),var(--bg);background-attachment:fixed}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.15}
svg.i{width:1.15em;height:1.15em;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:none;vertical-align:-.2em}
svg.i.f{fill:currentColor;stroke:none}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--sf3);border-radius:8px}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;padding:10px max(18px,env(safe-area-inset-left));padding-top:calc(10px + env(safe-area-inset-top));background:var(--glass);backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);border-bottom:1px solid var(--bd)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.03em;white-space:nowrap}
.logo b{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--acc),var(--acc2));color:var(--acct);font-size:18px;box-shadow:0 4px 14px rgba(255,140,40,.35)}
.logo small{font-weight:600;color:var(--tx3);font-size:12px;margin-left:2px}
.nav{display:flex;gap:2px;margin-left:10px}
.nav a{display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:12px;color:var(--tx2);font-weight:600;transition:.18s}
.nav a:hover{background:var(--sf2);color:var(--tx)}
.nav a.on{background:var(--sf3);color:var(--tx);box-shadow:inset 0 -2px 0 var(--acc)}
.sp{flex:1}
.pill{display:flex;align-items:center;gap:7px;padding:7px 13px;border-radius:999px;background:var(--sf2);border:1px solid var(--bd);font-weight:700;transition:.18s}
.pill:hover{border-color:var(--bd2)}
.pill .flame{color:var(--acc2);animation:flick 1.6s ease-in-out infinite;transform-origin:50% 90%}
.pill .coin{color:var(--acx)}
@keyframes flick{0%,100%{transform:scale(1) rotate(-2deg)}50%{transform:scale(1.14) rotate(3deg)}}
.iconbtn{position:relative;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--sf2);border:1px solid var(--bd);color:var(--tx2);transition:.18s}
.iconbtn:hover{color:var(--tx);border-color:var(--bd2)}
.iconbtn .dot{position:absolute;top:7px;right:8px;width:9px;height:9px;border-radius:50%;background:var(--red);box-shadow:0 0 0 2px var(--sf2)}
.avbtn{display:flex;align-items:center;gap:9px;padding:4px 10px 4px 4px;border-radius:999px;background:var(--sf2);border:1px solid var(--bd);transition:.18s}
.avbtn:hover{border-color:var(--bd2)}
.avbtn img,.ava{width:34px;height:34px;border-radius:50%;object-fit:cover;background:linear-gradient(135deg,#34406f,#232c52);border:2px solid var(--acc)}
.avbtn span{font-weight:700;max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu{position:fixed;right:16px;top:64px;max-height:calc(100vh - 80px);overflow:auto;min-width:230px;background:var(--sf);border:1px solid var(--bd2);border-radius:16px;box-shadow:var(--shadow);padding:8px;z-index:40;animation:pop .16s ease-out}
.menu h4{padding:8px 10px 4px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--tx3)}
.menu button,.menu a{display:flex;align-items:center;gap:10px;width:100%;padding:10px;border-radius:10px;text-align:left;color:var(--tx2);font-weight:600}
.menu button:hover,.menu a:hover{background:var(--sf2);color:var(--tx)}
.menu hr{border:0;border-top:1px solid var(--bd);margin:6px 0}
.menu .ni{display:block;padding:10px;border-radius:10px;color:var(--tx2);font-size:13.5px}.menu .ni b{color:var(--tx);display:block}.menu .ni:hover{background:var(--sf2)}
@keyframes pop{from{opacity:0;transform:translateY(-6px) scale(.97)}}

/* page */
#view{max-width:1180px;margin:0 auto;padding:26px 22px 90px}
.pg>*{animation:rise .5s cubic-bezier(.2,.8,.2,1) backwards;animation-delay:calc(var(--i,0)*55ms)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}
.h1{font-size:30px;font-weight:800}
.sub{color:var(--tx2);margin-top:4px}
.sec{display:flex;align-items:center;justify-content:space-between;margin:30px 0 12px}
.sec h2{font-size:18px;font-weight:800}
.sec a,.sec button.lnk{color:var(--acx);font-weight:700;font-size:13.5px;display:flex;align-items:center;gap:4px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.gauto{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.twocol{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:18px}
.card{background:var(--sf);border:1px solid var(--bd);border-radius:18px;padding:18px;transition:transform .2s,border-color .2s,box-shadow .2s}
.card.hv:hover{transform:translateY(-3px);border-color:var(--bd2);box-shadow:var(--shadow);cursor:pointer}
.card h3{font-size:16px;font-weight:800}
.muted{color:var(--tx2)}.mut3{color:var(--tx3)}
.chip{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;background:var(--sf3);color:var(--tx2)}
.chip.acc{background:rgba(255,176,32,.16);color:var(--acx)}.chip.grn{background:rgba(52,211,153,.15);color:var(--grn)}.chip.red{background:rgba(255,95,109,.15);color:var(--red)}.chip.vio{background:rgba(139,124,255,.18);color:var(--vio)}.chip.blu{background:rgba(78,161,255,.16);color:var(--blu)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:13px;font-weight:800;background:linear-gradient(135deg,var(--acc),var(--acc2));color:var(--acct);box-shadow:0 6px 18px rgba(255,140,40,.28);transition:.18s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,140,40,.38)}.btn:active{transform:translateY(0)}
.btn.ghost{background:var(--sf2);color:var(--tx);box-shadow:none;border:1px solid var(--bd2)}.btn.ghost:hover{background:var(--sf3)}
.btn.sm{padding:7px 13px;font-size:13px;border-radius:10px}
.btn:disabled{opacity:.45;pointer-events:none}
.bar{height:8px;border-radius:99px;background:var(--sf3);overflow:hidden}.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--acc),var(--acc2));width:calc(var(--w,0)*1%);transition:width 1s cubic-bezier(.2,.8,.2,1)}
.bar.t i{background:linear-gradient(90deg,var(--teal),var(--blu))}
.ring{--p:0;--c:var(--acc);width:var(--s,64px);height:var(--s,64px);border-radius:50%;background:conic-gradient(var(--c) calc(var(--p)*1%),var(--sf3) 0);display:grid;place-items:center;position:relative;transition:--p 1.2s cubic-bezier(.2,.8,.2,1)}
.ring::before{content:"";position:absolute;inset:7px;border-radius:50%;background:var(--sf)}
.ring b{position:relative;font-size:calc(var(--s,64px)*.26);font-weight:800}

/* home hero */
.hero{display:grid;grid-template-columns:1fr 250px;gap:10px;align-items:center;border-radius:24px;padding:26px 28px;background:linear-gradient(135deg,#1c2552 0%,#2b2160 55%,#4a2a6a 100%);border:1px solid var(--bd2);position:relative;overflow:hidden}
[data-theme=light] .hero{background:linear-gradient(135deg,#faefd9,#f6e8d6 60%,#f1e3da)}
.hero::after{content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(255,176,32,.35),transparent 65%);pointer-events:none}
.hero h1{font-size:32px;font-weight:800}.hero p{color:var(--tx2);margin:6px 0 16px;max-width:520px}
.hero .lv{display:flex;align-items:center;gap:12px;margin-bottom:16px;max-width:420px}.hero .lv .bar{flex:1}
.stage3d{position:relative;height:240px;margin:-24px -8px -34px 0}
.stage3d canvas{position:absolute;inset:0;width:100%;height:100%}
.hero .acts{display:flex;gap:10px;flex-wrap:wrap}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.kpi{padding:14px 16px;border-radius:16px;background:var(--sf);border:1px solid var(--bd);display:flex;align-items:center;gap:12px}
.kpi .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:20px}
.kpi b{display:block;font-size:22px;font-weight:800;line-height:1}.kpi span{font-size:12.5px;color:var(--tx2)}

/* list rows */
.rows{display:flex;flex-direction:column;gap:8px}
.row{display:flex;align-items:center;gap:14px;padding:13px 15px;border-radius:14px;background:var(--sf);border:1px solid var(--bd);transition:.18s;text-align:left;width:100%}
button.row:hover,a.row:hover{border-color:var(--bd2);background:var(--sf2);transform:translateX(3px)}
.row .tile{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:21px;flex:none;background:var(--sf3)}
.row .t{flex:1;min-width:0}.row .t b{display:block;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.row .t small{color:var(--tx2);font-size:12.5px}
.row.lock{opacity:.55}.row.lock:hover{transform:none}
.cls{overflow:hidden;padding:0}
.cls .top{height:92px;padding:14px 16px;display:flex;align-items:flex-end;position:relative;color:#fff}
.cls .top::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,.35))}
.cls .top h3{position:relative;z-index:1;color:#fff;font-size:17px;text-shadow:0 2px 8px rgba(0,0,0,.35)}
.cls .top .em{position:absolute;right:12px;top:8px;font-size:40px;opacity:.28;z-index:1}
.cls .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:10px}
.cls .meta{display:flex;align-items:center;gap:8px;color:var(--tx2);font-size:13px}
.tav{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:12px;color:#fff}

/* class page */
.chead{border-radius:22px;padding:26px 28px;color:#fff;position:relative;overflow:hidden;margin-bottom:0}
.chead::after{content:"";position:absolute;inset:0;background:radial-gradient(500px 220px at 90% 0%,rgba(255,255,255,.22),transparent 60%),linear-gradient(180deg,transparent,rgba(0,0,0,.28))}
.chead>*{position:relative;z-index:1}.chead h1{font-size:30px;font-weight:800;text-shadow:0 2px 10px rgba(0,0,0,.3)}.chead .em{position:absolute;right:26px;bottom:10px;font-size:90px;opacity:.22;z-index:0}
.chead .meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.chead .meta span{background:rgba(0,0,0,.28);backdrop-filter:blur(6px);padding:5px 12px;border-radius:999px;font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.tabs{display:flex;gap:4px;margin:18px 0 20px;border-bottom:1px solid var(--bd);overflow-x:auto}
.tabs button{padding:11px 16px;font-weight:700;color:var(--tx2);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap;display:flex;gap:8px;align-items:center;transition:.18s}
.tabs button:hover{color:var(--tx)}.tabs button.on{color:var(--tx);border-bottom-color:var(--acc)}
.crumb{display:flex;align-items:center;gap:8px;color:var(--tx2);font-weight:600;margin-bottom:14px}.crumb button{color:var(--tx2);display:flex;align-items:center;gap:6px}.crumb button:hover{color:var(--tx)}

/* modules */
.mod{border:1px solid var(--bd);background:var(--sf);border-radius:18px;margin-bottom:14px;overflow:hidden}
.mod>header{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;transition:.18s}
.mod>header:hover{background:var(--sf2)}
.mod .num{width:44px;height:44px;border-radius:13px;background:var(--sf3);display:grid;place-items:center;font-weight:800;font-size:16px}
.mod .t{flex:1}.mod .t h3{font-size:16px}.mod .t small{color:var(--tx2)}
.mod .chev{transition:transform .25s;color:var(--tx3)}.mod.open .chev{transform:rotate(180deg)}
.mod .chs{display:none;padding:0 14px 14px;flex-direction:column;gap:8px}.mod.open .chs{display:flex;animation:rise .35s}
.chrow{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:14px;background:var(--sf2);border:1px solid var(--bd);text-align:left;width:100%;transition:.18s}
.chrow>.st{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-size:17px;flex:none;background:var(--sf3);color:var(--tx3)}
.chrow.done>.st{background:rgba(52,211,153,.18);color:var(--grn)}.chrow.cur>.st{background:linear-gradient(135deg,var(--acc),var(--acc2));color:var(--acct);box-shadow:0 0 0 5px rgba(255,176,32,.15);animation:glow 2s ease-in-out infinite}
@keyframes glow{50%{box-shadow:0 0 0 9px rgba(255,176,32,.05)}}
.chrow .t{flex:1;min-width:0}.chrow .t b{display:block}.chrow .t small{color:var(--tx2)}
.chrow:not(.lock):hover{border-color:var(--acc);transform:translateX(3px)}
.chrow.lock{opacity:.55;cursor:not-allowed}
.stars{color:var(--acx);letter-spacing:1px;font-size:14px}.stars .o{color:var(--sf3)}

/* tables & leaderboard */
.tbl{width:100%;border-collapse:separate;border-spacing:0 6px}
.tbl th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--tx3);padding:4px 14px}
.tbl td{padding:12px 14px;background:var(--sf);border-top:1px solid var(--bd);border-bottom:1px solid var(--bd)}
.tbl td:first-child{border-left:1px solid var(--bd);border-radius:14px 0 0 14px}.tbl td:last-child{border-right:1px solid var(--bd);border-radius:0 14px 14px 0}
.tbl tr.me td{background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.35)}
.podium{display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:12px;align-items:end;margin-bottom:12px}
.pod{border-radius:18px;padding:16px;text-align:center;background:var(--sf);border:1px solid var(--bd)}
.pod .rk{width:34px;height:34px;border-radius:50%;margin:-32px auto 8px;display:grid;place-items:center;font-weight:800;color:#2a1800}
.pod.p1{padding-top:26px;background:linear-gradient(180deg,rgba(255,176,32,.16),var(--sf));border-color:rgba(255,176,32,.4)}
.pod .em{font-size:34px}.pod b{display:block;margin-top:4px}.pod span{color:var(--tx2);font-size:13px}

/* badges */
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.bdg{padding:16px 12px;border-radius:16px;background:var(--sf);border:1px solid var(--bd);text-align:center;transition:.2s}
.bdg .e{font-size:34px;display:block;margin-bottom:6px;filter:grayscale(1);opacity:.35}
.bdg b{display:block;font-size:14px}.bdg small{color:var(--tx3);font-size:12px}
.bdg.on{border-color:rgba(255,176,32,.45);background:linear-gradient(180deg,rgba(255,176,32,.1),var(--sf))}.bdg.on .e{filter:none;opacity:1;animation:pop .6s}
.bdg .bar{margin-top:8px;height:5px}

/* skill / game tiles */
.tile2{display:flex;flex-direction:column;gap:10px;padding:16px;border-radius:18px;background:var(--sf);border:1px solid var(--bd);text-align:left;transition:.2s;position:relative;overflow:hidden}
.tile2:hover{transform:translateY(-3px);border-color:var(--bd2);box-shadow:var(--shadow)}
.tile2 .ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:25px}
.tile2 h4{font-size:16px;font-weight:800}.tile2 p{margin:0;color:var(--tx2);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.filters button{padding:7px 14px;border-radius:999px;background:var(--sf2);border:1px solid var(--bd);font-weight:700;color:var(--tx2);transition:.18s}
.filters button.on{background:var(--tx);color:var(--bg);border-color:var(--tx)}
.week{display:flex;gap:8px}.week div{flex:1;text-align:center;padding:8px 0;border-radius:12px;background:var(--sf2);font-size:12px;color:var(--tx3);font-weight:700}
.week div i{display:grid;place-items:center;width:28px;height:28px;margin:4px auto 0;border-radius:50%;background:var(--sf3);font-style:normal}
.week div.on i{background:linear-gradient(135deg,var(--acc),var(--acc2));color:var(--acct)}.week div.today{outline:2px solid var(--acc)}
.note{padding:11px 14px;border-radius:12px;background:rgba(139,124,255,.1);border:1px solid rgba(139,124,255,.25);color:var(--tx2);font-size:13px}
.empty{padding:34px;text-align:center;color:var(--tx3)}

/* assignment page */
.pad{width:100%;min-height:220px;resize:vertical;padding:14px;border-radius:14px;background:var(--sf2);border:1px solid var(--bd2);color:var(--tx);font:inherit;font-size:16px;line-height:1.6;outline:none;-webkit-user-select:text;user-select:text}
.pad:focus{border-color:var(--acc)}
.chk{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:12px;background:var(--sf2);border:1px solid var(--bd);width:100%;text-align:left;margin-bottom:8px}
.chk i{width:22px;height:22px;border-radius:7px;border:2px solid var(--bd2);display:grid;place-items:center;font-style:normal;flex:none;color:transparent;transition:.15s}
.chk.on i{background:var(--grn);border-color:var(--grn);color:#04251a}

/* runner (lesson + quiz) */
.runner{position:fixed;inset:0;z-index:60;background:var(--bg);background-image:var(--hero);display:none;flex-direction:column;overflow:auto}
.runner.on{display:flex;animation:fade .25s}
@keyframes fade{from{opacity:0}}
.rtop{display:flex;align-items:center;gap:14px;padding:calc(12px + env(safe-area-inset-top)) 18px 12px;position:sticky;top:0;background:var(--glass);backdrop-filter:blur(14px);z-index:2;border-bottom:1px solid var(--bd)}
.rtop .bar{flex:1;height:10px}.rtop small{color:var(--tx2);font-weight:700;min-width:46px;text-align:right}
.rbody{flex:1;width:100%;max-width:780px;margin:0 auto;padding:26px 20px calc(40px + env(safe-area-inset-bottom))}
.lesson{background:var(--sf);border:1px solid var(--bd);border-radius:24px;padding:30px;animation:rise .45s cubic-bezier(.2,.8,.2,1)}
.lesson .em{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;font-size:32px;background:var(--sf3);margin-bottom:14px}
.lesson h2{font-size:30px;font-weight:800;margin:6px 0 12px}
.lesson p{font-size:20px;line-height:1.55;color:var(--tx);margin:0}
.lesson p b{color:var(--acx);background:rgba(255,176,32,.12);padding:0 5px;border-radius:6px}
.lesson .ex{margin-top:16px;padding:16px 18px;border-radius:16px;background:var(--sf2);border-left:4px solid var(--teal);font-size:18px}
.lesson .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:26px}
.qcard{background:var(--sf);border:1px solid var(--bd);border-radius:24px;padding:16px;animation:rise .4s cubic-bezier(.2,.8,.2,1)}
.qcard .qh{display:flex;align-items:center;justify-content:space-between;color:var(--tx2);font-weight:700;margin:2px 4px 8px}
.wcp{--g:#34d399;--gold:#ffb020}
.shake{animation:shake .4s}@keyframes shake{20%{transform:translateX(-10px)}40%{transform:translateX(10px)}60%{transform:translateX(-6px)}80%{transform:translateX(6px)}}
.result{text-align:center;padding:20px 0;animation:rise .5s}
.result .ring{--s:150px;margin:0 auto 16px}.result h2{font-size:30px;font-weight:800}.result .stars{font-size:34px;margin:8px 0}
.result .acts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.result .xp{display:inline-flex;align-items:center;gap:8px;margin:8px 0;padding:8px 18px;border-radius:999px;background:rgba(255,176,32,.14);color:var(--acx);font-weight:800;font-size:18px}

/* avatar studio (welcome + edit) */
.studio{position:fixed;inset:0;z-index:70;display:none;background:radial-gradient(900px 600px at 25% 40%,#34296f 0%,#161c3d 45%,#0b0f22 100%)}
.studio.on{display:grid;grid-template-columns:1.15fr 1fr;animation:fade .3s}
.studio .vp{position:relative}.studio .vp canvas{position:absolute;inset:0;width:100%;height:100%}
.studio .vp .nm{position:absolute;left:0;right:0;bottom:7%;text-align:center;color:#fff}.studio .vp .nm b{display:block;font-size:34px;font-weight:800}.studio .vp .nm small{color:#b9c2ee;font-size:15px}
.studio .arr{position:absolute;top:44%;width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:24px;display:grid;place-items:center;backdrop-filter:blur(6px)}.studio .arr:hover{background:rgba(255,255,255,.2)}
.studio .arr.l{left:6%}.studio .arr.r{right:6%}
.studio .panel{background:var(--sf);border-left:1px solid var(--bd);padding:36px 38px;overflow:auto;display:flex;flex-direction:column}
.studio .panel h2{font-size:28px;font-weight:800}.studio .panel .sub{margin-bottom:6px}
.fl{font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.07em;color:var(--tx3);margin:18px 0 8px}
.studio input.name{width:100%;padding:13px 15px;border-radius:13px;background:var(--sf2);border:1px solid var(--bd2);color:var(--tx);font:inherit;font-size:18px;font-weight:700;outline:none;-webkit-user-select:text;user-select:text}
.studio input.name:focus{border-color:var(--acc)}
.opts{display:flex;gap:8px;flex-wrap:wrap}
.opts button{padding:9px 15px;border-radius:12px;background:var(--sf2);border:1px solid var(--bd);font-weight:700;color:var(--tx2);transition:.15s}
.opts button.on{background:var(--tx);color:var(--bg);border-color:var(--tx)}
.opts.sw button{width:38px;height:38px;padding:0;border-radius:50%;border:3px solid var(--sf)}.opts.sw button.on{box-shadow:0 0 0 2px var(--tx);background:none}
.thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.thumbs button{aspect-ratio:1;border-radius:14px;background:var(--sf2);border:2px solid transparent;overflow:hidden;padding:0}.thumbs button img{width:100%;height:100%;object-fit:cover}.thumbs button.on{border-color:var(--acc);background:rgba(255,176,32,.12)}
.studio .go{margin-top:auto;padding-top:22px}.studio .go .btn{width:100%;padding:15px}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,30px);opacity:0;background:var(--tx);color:var(--bg);padding:11px 20px;border-radius:13px;font-weight:700;z-index:90;pointer-events:none;transition:.3s;max-width:90vw;text-align:center}
.toast.on{opacity:1;transform:translate(-50%,0)}
.player{position:fixed;inset:0;z-index:80;background:#050810;display:flex;flex-direction:column}.player.hide{display:none}.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0;min-height:0}
.pback{position:absolute;left:calc(8px + env(safe-area-inset-left));top:calc(8px + env(safe-area-inset-top));z-index:3;display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:6px 16px 6px 8px;border-radius:999px;background:rgba(12,16,32,.82);color:#fff;font:800 15px/1 system-ui,-apple-system,sans-serif;border:2px solid #ffb020;backdrop-filter:blur(6px);box-shadow:0 4px 14px rgba(0,0,0,.4);cursor:pointer}.pback:active{transform:scale(.96)}.pback svg{width:28px;height:28px;padding:6px;border-radius:50%;background:#ffb020;color:#1a1205;stroke-width:3;flex:none}
#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:95}

/* bottom bar on small screens */
.tabbar{display:none}
@media(max-width:900px){
  .nav,.logo small,.avbtn span{display:none}
  .topbar{gap:10px}.sp{flex:1}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:25;background:var(--glass);backdrop-filter:blur(16px);border-top:1px solid var(--bd);padding:6px 6px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;font-weight:700;color:var(--tx3);padding:6px 0}.tabbar a.on{color:var(--acx)}.tabbar a svg{font-size:20px}
  #view{padding:18px 14px 100px}
  .hero{grid-template-columns:1fr}.stage3d{display:none}.twocol,.g3,.g4,.g2{grid-template-columns:1fr}.kpis{grid-template-columns:repeat(2,1fr)}
  .studio.on{grid-template-columns:1fr;grid-template-rows:38vh 1fr}.studio .panel{border-left:0;border-top:1px solid var(--bd);padding:22px}
  .podium{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*:not(.otto):not(.otto *):not(.osc):not(.osc *):not(.oc):not(.oc *):not(.dbadge.od):not(.hero):not(.hero *):not(.stage3d):not(.stage3d *):not(#ldr):not(#ldr *):not(.tour):not(.tour *):not(.oht2):not(.oht2 *):not(.ohi):not(.ohi *){animation:none!important;transition:none!important}}
@media(max-width:1380px){.logo small,.avbtn span{display:none}.nav a{padding:8px 10px}}
/* quiz panel is designed for dark surfaces: keep the question card dark in light theme too */
:root[data-theme=light] .qcard{background:#141a33;border-color:#2a3358;color:#eaf0ff}
:root[data-theme=light] .qcard .qh{color:#9aa6d0}
/* login */
.login{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;background:var(--bg)}
.lcard{width:min(400px,100%);background:var(--sf);border:1px solid var(--bd);border-radius:22px;padding:28px 24px;display:flex;flex-direction:column;gap:8px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.lcard h2{margin:10px 0 0;font-size:24px}
.lcard label{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--tx3);margin-top:8px}
.lcard input{font:inherit;font-size:18px;padding:13px 14px;border-radius:12px;border:1px solid var(--bd);background:var(--sf2);color:var(--tx)}
.lcard input:focus{outline:2px solid var(--acc);border-color:var(--acc)}
.lcard .btn{margin-top:14px;justify-content:center;width:100%}
.lcard .bad{color:var(--red);margin:0}
.lcard .tlink{text-align:center;margin-top:10px;color:var(--tx3);font-size:13px}
.fbk{border:1px solid var(--bd);border-radius:14px;padding:14px;background:var(--sf);margin:14px 0}
.fbk b{display:block;margin-bottom:4px}
.ann{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:14px;margin-bottom:16px;background:rgba(78,161,255,.12);border:1px solid rgba(78,161,255,.35)}
.ann svg{flex:none;margin-top:2px;color:var(--blu)}
.fl.hide,.studio .hideit{display:none}

/* phone fit */
@media(max-width:900px){.hero,.twocol,.g3,.g4,.g2{grid-template-columns:minmax(0,1fr)}.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}#view>*,.sec,.rows,.row{min-width:0;max-width:100%}.studio .panel{padding-bottom:calc(22px + env(safe-area-inset-bottom))}}
@media(max-width:480px){.topbar{gap:6px;padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}.pill{padding:6px 9px;gap:5px}.iconbtn{width:36px;height:36px}.logo{font-size:16px;gap:7px}.logo b{width:30px;height:30px}.avbtn{padding:2px}#view{padding:14px 12px 96px}.row{gap:10px;padding:11px 12px}.row .chip{flex:none;max-width:40%}}
.studio input.name{box-sizing:border-box}
@media(max-height:520px) and (orientation:landscape){.studio.on{grid-template-columns:1fr 1.2fr;grid-template-rows:none}.studio .panel{border-top:0;border-left:1px solid var(--bd)}.studio .vp .nm b{font-size:22px}#view{padding-bottom:84px}}
@media(max-height:520px){.tabbar{padding:2px 6px calc(2px + env(safe-area-inset-bottom))}.tabbar a{flex-direction:row;justify-content:center;gap:6px;padding:6px 0}.topbar{padding-top:calc(4px + env(safe-area-inset-top));padding-bottom:4px}}

/* game tiles with screenshot previews */
.tile2.gtile{padding:0;gap:0}
.gtile .thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;border-radius:18px 18px 0 0}
.gtile .thumb .em{position:absolute;inset:0;display:grid;place-items:center;font-size:96px;line-height:1}.gtile .thumb .em .wcii{display:block;filter:drop-shadow(0 8px 14px rgba(0,0,0,.35))}.gtile .thumb .em .wci{width:1em;height:1em}.gtile .thumb::before{content:'';position:absolute;left:50%;top:50%;width:150px;height:150px;margin:-75px 0 0 -75px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 70%)}
.gtile .thumb img{position:absolute;z-index:1;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.gtile:hover .thumb img{transform:scale(1.06)}
.gtile .thumb .chip.tg{position:absolute;left:8px;bottom:8px;z-index:2;background:rgba(10,12,24,.72);color:#fff;border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(6px)}
.gtile .gb{display:flex;flex-direction:column;gap:4px;padding:12px 14px 14px}
.gtile .gb h4{font-size:15px}
.gtile .thumb img.fr{opacity:0;transition:opacity .6s;transform:scale(1.04)}.gtile .thumb img.fr.on{opacity:1;transform:scale(1.1);transition:opacity .6s,transform 2.4s linear}
.gtile .thumb .play{position:absolute;right:8px;bottom:8px;z-index:3;padding:5px 12px;border-radius:999px;background:linear-gradient(#ffe27a,#f0b429);color:#1a1000;font-weight:900;font-size:12px;opacity:0;transform:translateY(6px);transition:.2s}
.gtile:hover .thumb .play{opacity:1;transform:none}
.gtile:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 14px 34px rgba(0,0,0,.35);z-index:2}
.gtile.prev .gb p{-webkit-line-clamp:3}

/* scan & upload */
.scanrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 14px}
.scanov{position:fixed;inset:0;z-index:300;background:rgba(5,8,18,.72);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:max(12px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left))}
.scanbox{width:min(760px,100%);max-height:100%;overflow:auto;background:var(--sf);border:1px solid var(--bd2);border-radius:20px;padding:18px;display:flex;flex-direction:column;gap:12px}
.scanhd{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.scanhd h3{margin:0 0 2px}.scanhd p{margin:0;font-size:14px}
.scantips{display:flex;gap:8px;flex-wrap:wrap}.scantips span{font-size:12.5px;padding:5px 10px;border-radius:99px;background:var(--sf2);border:1px solid var(--bd);color:var(--tx)}
.scanbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.scanmsg{padding:10px 12px;border-radius:12px;background:var(--sf2);border:1px solid var(--bd2);font-size:14px}
.scanlist{display:flex;flex-direction:column;gap:12px}
.scanpg{display:flex;gap:14px;padding:10px;border-radius:14px;background:var(--sf2);border:1px solid var(--bd);align-items:flex-start}
.scanimg{position:relative;flex:0 0 36%;max-width:260px;border-radius:10px;overflow:hidden;background:#fff;border:1px solid var(--bd2)}.scanimg img{display:block;width:100%;height:auto}
.scaninfo{min-width:0;display:flex;flex-direction:column;gap:8px}.scanbtns{display:flex;gap:8px;flex-wrap:wrap}
.scanwarn{font-size:13.5px;color:#ffb15c}.scanok{font-size:13.5px;color:#47c98a}
.scanempty{padding:26px;text-align:center;color:var(--mut,#9aa3c4);border:1px dashed var(--bd2);border-radius:14px}
.scanft{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}.scanft .muted{font-size:13px;max-width:440px}
@media (max-width:560px){.scanpg{flex-direction:column}.scanimg{flex:none;max-width:100%;width:100%}}

.scancrop{position:absolute;inset:0;z-index:5;background:rgba(5,8,18,.82);display:flex;align-items:center;justify-content:center;padding:12px}
.scancropbox{width:min(640px,100%);max-height:100%;overflow:auto;background:var(--sf);border:1px solid var(--bd2);border-radius:18px;padding:16px;display:flex;flex-direction:column;gap:10px}
.scancropbox h4{margin:0}.scancropbox p{margin:0;font-size:14px}
.scancropstage{position:relative;line-height:0;touch-action:none;user-select:none;border-radius:8px;overflow:hidden;background:#000}
.scancropstage img{width:100%;height:auto;display:block;pointer-events:none}
.scancropsel{position:absolute;border:2px solid #ffb020;box-shadow:0 0 0 9999px rgba(0,0,0,.55);cursor:move;touch-action:none}
.scancropsel .h{position:absolute;width:30px;height:30px;margin:-15px 0 0 -15px;border-radius:50%;background:#ffb020;border:3px solid #fff;box-shadow:0 2px 6px rgba(0,0,0,.4);touch-action:none}
.scancropsel .tl{left:0;top:0;cursor:nwse-resize}.scancropsel .t{left:50%;top:0;cursor:ns-resize}.scancropsel .tr{left:100%;top:0;cursor:nesw-resize}
.scancropsel .r{left:100%;top:50%;cursor:ew-resize}.scancropsel .br{left:100%;top:100%;cursor:nwse-resize}.scancropsel .b{left:50%;top:100%;cursor:ns-resize}
.scancropsel .bl{left:0;top:100%;cursor:nesw-resize}.scancropsel .l{left:0;top:50%;cursor:ew-resize}
.scantitle{display:flex;align-items:center;gap:10px}.scanarr{display:inline-flex;gap:6px}.scanarr .btn{padding:4px 11px;font-size:16px;line-height:1}
.scanorig{position:absolute;right:6px;bottom:6px;padding:5px 10px;border-radius:99px;border:0;background:rgba(10,14,30,.78);color:#fff;font:700 12px/1 inherit;cursor:pointer;backdrop-filter:blur(4px)}.scanorig:hover{background:rgba(10,14,30,.92)}

.scandrop{display:flex;flex-direction:column;align-items:center;gap:4px;padding:18px 14px;border:2px dashed var(--bd2);border-radius:14px;text-align:center;cursor:pointer;color:var(--tx2);transition:background .15s,border-color .15s}
.scandrop b{color:var(--tx)}.scandrop small{color:var(--mut,#9aa3c4);font-size:12.5px}
.scandrop:hover,.scandrop:focus-visible,.scandrop.over{border-color:var(--acc);background:rgba(255,176,32,.08);outline:0}.scandrop.over{border-style:solid}.scandrop.off{opacity:.45;pointer-events:none}

/* Otto on the current chapter and on result panels */
.chrow.cur{position:relative;margin-top:36px}
.chotto{position:absolute;right:92px;top:-56px;width:58px;pointer-events:none;display:flex;align-items:flex-end}
.chotto .otto{width:58px}
.chotto em{position:absolute;right:62px;top:18px;white-space:nowrap;font-style:normal;font-weight:800;font-size:11px;padding:3px 9px;border-radius:999px;background:var(--acc);color:var(--acct,#1a1000);box-shadow:0 3px 8px rgba(0,0,0,.25)}
.result .ro{min-height:0;margin:-6px auto 4px}.result .ro .oht2{transform:scale(.8);transform-origin:50% 0;margin-bottom:-34px}
@media(max-width:600px){.chotto{right:70px}}

/* sleepy Otto on the first locked chapter · "Stuck? Ask Otto" */
.chrow.sleepy{position:relative;margin-top:36px}
.chsleep em{background:#8b7cff;color:#fff}
.otbtn{display:inline-flex;align-items:center;gap:6px;padding:3px 12px 3px 6px;border-radius:999px;background:var(--sf3);border:1px solid var(--bd2);color:var(--tx);font-weight:800;font-size:13px;cursor:pointer;transition:.18s}
.otbtn:hover{border-color:var(--acc);transform:translateY(-1px)}
.otbtn .otto{width:26px;flex:none}

.chrow.cur,.chrow.sleepy{margin-top:0}.chico{width:44px;height:44px;flex:none;display:flex;align-items:center;justify-content:center;pointer-events:none}.chico .otto,.chico svg{width:44px;height:44px}.chrow.lock .chico{opacity:.7}.chip.yah{background:var(--acc);color:var(--acct,#1a1000);font-weight:800}

.chip.warn{background:rgba(251,146,60,.18);color:#fb923c;font-weight:800}
.tries{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:14px 0}
.try{min-width:104px;padding:10px 14px;border-radius:14px;background:var(--card2,rgba(255,255,255,.06));border:1px solid var(--line,rgba(255,255,255,.1));display:flex;flex-direction:column;align-items:center;gap:2px}
.try span{font-size:12px;opacity:.7}.try b{font-size:22px;color:#fb923c}.try.ok b{color:var(--grn)}.try small{font-size:11px;opacity:.7}
.lesson.retry{text-align:center;display:flex;flex-direction:column;align-items:center}
.lesson.retry .chip{display:inline-flex;width:auto;align-self:center}
.lesson.retry .ro{min-height:0;margin:0 auto 4px;width:100%}.lesson.retry .ro .oht2{transform:scale(.8);transform-origin:50% 0;margin:0 auto -34px}
.lesson.retry .actions{justify-content:center;flex-wrap:wrap}
.chrow.retry{border-color:#fb923c;background:linear-gradient(90deg,rgba(251,146,60,.16),rgba(251,146,60,.05));box-shadow:0 0 0 1px rgba(251,146,60,.35),0 6px 18px rgba(251,146,60,.12)}
.chrow.retry>.st{background:rgba(251,146,60,.2);color:#fb923c;box-shadow:none;animation:none}
.chrow.retry .chip.warn{background:#fb923c;color:#2a1200}
.accd.moret{border-style:dashed}.accd.moret>summary{padding:14px 16px}.mtl{display:flex;flex-direction:column;padding:4px 8px 8px}.mti{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:none;border:0;border-radius:10px;padding:9px 10px;color:inherit;font:inherit;cursor:pointer}.mti:hover{background:var(--sf3)}.mte{width:28px;text-align:center;font-size:18px}.mtn{flex:1;font-weight:700}.mti small{color:var(--tx2);font-size:12.5px}

.accbar{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;color:inherit;font:inherit;text-align:left;cursor:pointer;border-style:dashed}.accbar .t{flex:1;min-width:0;display:flex;flex-direction:column}.accbar .chev{color:var(--tx2);transition:transform .2s}.accbar.open .chev{transform:rotate(180deg)}#mtg[hidden]{display:none}

.accbar{justify-content:center;padding:8px 16px}.accbar .chev{display:grid;place-items:center;line-height:0;color:var(--tx2)}.accbar:hover .chev{color:var(--tx)}
.accd>summary .chev{font-size:17px;line-height:1;padding:0 4px}

.accd .ico.oic{position:relative;width:52px;height:52px;background:none;border-radius:0;display:block;flex:none;overflow:visible}
.accd .ico.oic .otto{width:44px;position:absolute;left:0;top:0}
.accd .ico.oic em{position:absolute;right:-2px;bottom:-2px;width:26px;height:26px;display:grid;place-items:center;font-style:normal;font-size:17px;border-radius:50%;background:var(--sf);box-shadow:0 0 0 2px var(--sf3)}
.accd .ico.oic em .wci,.accd .ico.oic em svg{width:18px;height:18px}

.accd .ico.oic em{right:-4px;bottom:auto;top:-8px;width:26px;height:26px;background:none;box-shadow:none;font-size:20px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.4));transform-origin:50% 100%}
.accd .ico.oic.fl .otto{transform:scaleX(-1)}
.accd .ico.oic.fl em{right:auto;left:-4px}
.accd .ico.oic em.pa0{animation:pFloat 2.2s ease-in-out infinite}
.accd .ico.oic em.pa1{animation:pSway 2.4s ease-in-out infinite}
.accd .ico.oic em.pa2{animation:pPulse 1.8s ease-in-out infinite}
.accd .ico.oic em.pa3{animation:pBounce 1.6s cubic-bezier(.3,.7,.4,1) infinite}
.accd .ico.oic em.pa4{animation:pTilt 3s ease-in-out infinite}
@keyframes pFloat{50%{transform:translateY(-4px)}}
@keyframes pSway{0%,100%{transform:rotate(-12deg)}50%{transform:rotate(12deg)}}
@keyframes pPulse{50%{transform:scale(1.18)}}
@keyframes pBounce{0%,100%{transform:translateY(0)}40%{transform:translateY(-6px)}}
@keyframes pTilt{0%,100%{transform:rotate(-6deg) translateY(0)}50%{transform:rotate(8deg) translateY(-3px)}}
@media(prefers-reduced-motion:reduce){.accd .ico.oic em{animation:none!important}}

.row .tile svg.i{width:22px;height:22px}

.hwr .dbadge.ok{background:rgba(61,220,151,.14);border-color:rgba(61,220,151,.35)}.hwr .dbadge.ok i,.hwr .dbadge.ok u{color:#3ddc97}
.hwr .dbadge.lk{opacity:.55}.hwr .dbadge.nd svg.i{width:22px;height:22px}
.hwr .dbadge.od{animation:hwPulse 2.4s ease-in-out infinite}
@keyframes hwPulse{0%,100%{box-shadow:0 0 0 0 rgba(255,90,110,0)}50%{box-shadow:0 0 0 6px rgba(255,90,110,.18)}}
.hwr .dbadge.ok svg.i{color:#3ddc97;width:24px;height:24px}

.selx{appearance:none;-webkit-appearance:none;font:inherit;font-weight:700;font-size:14px;color:var(--tx,#fff);background:var(--sf2,#1b2040) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23a9a6c9' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 14px center;border:1px solid var(--bd,#2a3160);border-radius:999px;padding:9px 38px 9px 16px;min-width:170px;cursor:pointer}
.selx:focus{outline:2px solid var(--acc,#ffb020);outline-offset:2px}

.cprog{margin-top:16px;padding:12px 18px 16px;border-radius:18px;background:rgba(0,0,0,.28);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14)}
.cp-top{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.cp-top b{font-size:30px;font-weight:800;line-height:1}.cp-top span{font-weight:700;font-size:13.5px;opacity:.92}.cp-hw{margin-left:auto;display:inline-flex;align-items:center;gap:6px}.cp-hw svg.i{width:16px;height:16px}
.cp-track{position:relative;height:12px;border-radius:999px;background:rgba(255,255,255,.22);margin:34px 22px 2px 0}
.cp-fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:linear-gradient(90deg,#ffd45a,#ff9f43);box-shadow:0 0 14px rgba(255,200,80,.7)}
.cp-track s{position:absolute;top:-3px;bottom:-3px;width:3px;margin-left:-1.5px;border-radius:2px;background:rgba(255,255,255,.55)}
.cp-flag{position:absolute;right:-24px;top:50%;transform:translateY(-50%);width:22px;height:22px;color:#ffd45a;display:grid;place-items:center}.cp-flag svg.i{width:22px;height:22px}
.cp-otto{position:absolute;bottom:3px;width:38px;transform:translateX(-50%);pointer-events:none;filter:drop-shadow(0 3px 3px rgba(0,0,0,.35))}.cp-otto .otto,.cp-otto svg{width:38px;height:auto;display:block}
@media(max-width:560px){.cp-top b{font-size:24px}.cp-hw{margin-left:0}}


#ung[hidden]{display:none}#ung{display:grid;gap:inherit}

.wgoal.wg2{padding:20px 22px;gap:22px;background:linear-gradient(135deg,rgba(255,176,32,.10),rgba(139,124,255,.10)),var(--sf)}
.wg-l{min-width:150px}.wg-l h3{font-size:17px;margin:0 0 6px}.wg-n{display:flex;align-items:baseline;gap:6px;margin-bottom:4px}.wg-n b{font-size:34px;font-weight:800;line-height:1;color:var(--acc,#ffb020)}.wg-n span{font-weight:700;color:var(--tx2)}
.wg-track{flex:1;min-width:240px;position:relative;display:flex;justify-content:space-between;align-items:center;padding:6px 0}
.wg-line{position:absolute;left:20px;right:20px;top:50%;height:6px;margin-top:-3px;border-radius:99px;background:var(--sf3)}.wg-line i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#ffd45a,#ff9f43);box-shadow:0 0 10px rgba(255,176,32,.5);transition:width .6s}
.wn{position:relative;z-index:1;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-weight:800;background:var(--sf2,var(--sf3));border:2px solid var(--bd2,var(--bd));color:var(--tx2)}
.wn.on{background:linear-gradient(135deg,#ffd45a,#ff9f43);border-color:#ffd45a;color:#3a2400;box-shadow:0 0 14px rgba(255,176,32,.5)}
.wn.cur{border-color:var(--acc,#ffb020);color:var(--acc,#ffb020);animation:wnp 2.2s ease-in-out infinite}
.wn.end:not(.on){border-style:dashed}.wn svg.i{width:20px;height:20px}
@keyframes wnp{0%,100%{box-shadow:0 0 0 0 rgba(255,176,32,0)}50%{box-shadow:0 0 0 6px rgba(255,176,32,.18)}}

.wgoal.wg2{position:relative;flex-wrap:nowrap}
.wg2 .wcoin{position:absolute;top:14px;right:16px;display:inline-flex;align-items:center;gap:7px;padding:6px 10px 6px 12px;border-radius:99px;font-size:16px;background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.35);color:inherit;cursor:pointer}
.wg2 .wcoin b{font-size:15px;color:var(--acc,#ffb020)}.wg2 .wcoin small{font-size:12.5px;color:var(--tx2);font-weight:600}.wg2 .wcoin svg{width:14px;height:14px;opacity:.7}
.wg2 .wg-track{margin-top:30px}
@media(max-width:620px){.wgoal.wg2{flex-wrap:wrap}.wg2 .wg-track{flex-basis:100%;margin-top:8px}}
.wn.cur{border:3px solid #ffc83d;color:#ffc83d;background:rgba(255,200,61,.10);box-shadow:0 0 0 4px rgba(255,200,61,.16),0 0 16px rgba(255,176,32,.45)}
.wg-line{overflow:visible}.wg-nx{position:absolute;top:-2px;bottom:-2px;border:2px solid #ffc83d;border-radius:99px;box-shadow:0 0 10px rgba(255,176,32,.35);box-sizing:border-box;pointer-events:none}
.wn.cur{background:var(--sf2,#262b47)}
.wg-nx{border-radius:0!important;border-left:0!important;border-right:0!important;top:-1px!important;bottom:-1px!important}
.lvb .btn{flex:1 1 100%;justify-content:center;width:100%}
.cls .body .bar{flex:1;min-width:0}.cls .body b{min-width:34px;text-align:right}
/* to-do list polish */
.tdl{gap:14px}
.tdl>.accd{border-radius:20px;overflow:hidden;background:linear-gradient(180deg,var(--sf2,var(--sf)),var(--sf));border:1px solid var(--bd);box-shadow:0 6px 18px rgba(0,0,0,.16)}
.tdl>.accd>summary{padding:14px 18px;gap:14px}
.tdl>.accd>summary .t b{font-size:16px}
.tdl>.accd>summary .chev{display:grid;place-items:center;width:28px;height:28px;padding:0;border-radius:50%;background:var(--sf3);font-size:12px;color:var(--tx2)}
.tdl>.accd>.rows{padding:12px 14px 14px;gap:10px;border-top:1px solid var(--bd);background:rgba(0,0,0,.08)}
.tdl .row.hwr{position:relative;padding:12px 16px 12px 14px;border-radius:16px;background:var(--sf);border:1px solid var(--bd);overflow:hidden}
.tdl .row.hwr::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:0 4px 4px 0;background:#5b8cff}
.tdl .row.hwr:has(.dbadge.od)::before{background:#ff5d73}
.tdl a.row.hwr:hover,.tdl button.row.hwr:hover{transform:none;background:var(--sf2,var(--sf));border-color:var(--bd2)}
.tdl .row.hwr>svg{opacity:.55;flex:none}.tdl .row.hwr:hover>svg{opacity:1;transform:translateX(2px)}
.tdl .row.hwr .chip{flex:none}
body.inplay .ocf,body.inplay .ocp{display:none!important}
/* iPad Safari: first screen can end a little short of the bottom. Make the setup and login screens at least as tall as the large viewport. */
.studio,.login{height:100vh;height:max(100vh,100dvh);min-height:-webkit-fill-available}
/* no Ask Otto on the setup and login screens */
body:has(#studio.on) .ocf,body:has(#studio.on) .ocp,body:has(.login) .ocf,body:has(.login) .ocp{display:none!important}
/* Topical practice category rows: pin Otto to the left of the row instead of letting flex/summary decide (iPad Safari placed him ~15px too far right, over the title) */
.accd>summary.hasoc{position:relative;padding-left:92px;min-height:80px}
.accd>summary>.ico.occ{position:absolute;left:0;top:50%;margin:-32px 0 0 0;width:64px;height:64px;flex:none;transform:translateX(14px)}
.accd>summary>.ico.occ>.oc{position:absolute;left:0;top:0;margin:0}
/* Daily quest path: all nodes on one line (circles top-aligned, no zig-zag), connectors through the circle centres */
.quest .qpath{align-items:flex-start}
.quest .qn{transform:none!important}
.quest .qpath>.qc{align-self:flex-start;margin-top:32px;top:0}
@media(max-width:900px){.quest .qpath>.qc{margin-top:26px}}
/* subject dropdown: only the chevron rotates; the book icon (an svg after wci.js) must not inherit the rotate/16px rule */
.ddb>span svg,.ddm button>span svg{transform:none!important;width:24px;height:24px;margin:0!important;transition:none}
.dd.open .ddb>span svg{transform:none!important}
/* ── course complete card + certificate ── */
.fin{position:relative;display:grid;grid-template-columns:minmax(170px,230px) 1fr;align-items:center;gap:6px;padding:8px 22px 8px 6px;border-radius:22px;overflow:hidden;border:1px solid rgba(255,200,61,.35);background:radial-gradient(120% 140% at 0% 0%,rgba(255,200,61,.22),transparent 55%),linear-gradient(135deg,rgba(255,176,32,.12),rgba(139,124,255,.16)),var(--sf)}
.fin .stage3d.fin3d{position:relative;height:250px;margin:0;min-width:0}
.fin .stage3d .plat{bottom:14px;width:180px;margin-left:-90px;height:48px}
.fin .fint{min-width:0;padding:10px 0}
.fin .fint h2{font-size:24px;font-weight:800;line-height:1.2;margin:10px 0 6px;text-wrap:balance}
.fin .fint p{color:var(--tx2);margin:0 0 16px}
.fin .acts{display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:620px){.fin{grid-template-columns:1fr;padding:8px 16px 18px}.fin .stage3d.fin3d{height:230px}}
#cert{position:fixed;inset:0;z-index:300;background:rgba(6,8,18,.82);display:grid;place-items:center;padding:20px;overflow:auto}
#cert .cert-box{display:flex;flex-direction:column;gap:16px;align-items:center;width:min(440px,100%)}
#cert .cert-acts{display:flex;gap:10px}
.tr-card{width:100%;border-radius:26px;padding:26px 22px 24px;text-align:center;border:1px solid rgba(255,200,61,.4);background:radial-gradient(90% 60% at 50% 18%,rgba(255,200,61,.28),transparent 70%),linear-gradient(160deg,#241f4a,#14142c);box-shadow:0 24px 70px rgba(0,0,0,.55)}
.tr-stage{position:relative;width:min(250px,70%);margin:0 auto}
.tr-svg{display:block;width:100%;height:auto;filter:drop-shadow(0 12px 18px rgba(255,170,30,.35));animation:trBob 3.2s ease-in-out infinite}
@keyframes trBob{50%{transform:translateY(-6px)}}
.tr-sp{position:absolute;width:12px;height:12px;background:#fff3b0;clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);opacity:0;animation:trSp 2.2s ease-in-out infinite}
@keyframes trSp{0%,100%{opacity:0;transform:scale(.3) rotate(0)}50%{opacity:1;transform:scale(1.3) rotate(45deg)}}
.tr-plaque{margin:-6px auto 0;max-width:92%;padding:12px 16px 13px;border-radius:12px;background:linear-gradient(135deg,#e6b04a,#9a6410);color:#2a1a00;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 6px 16px rgba(0,0,0,.4)}
.tr-plaque small{display:block;font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;opacity:.75}
.tr-plaque b{display:block;font-size:19px;font-weight:800;line-height:1.2;margin:3px 0 4px;text-wrap:balance}
.tr-plaque span{display:block;font-size:12px;font-weight:600;opacity:.8}

/* welcome / profile studio polish */
.studio .panel{counter-reset:stp;gap:0;background:linear-gradient(180deg,var(--sf) 0%,var(--sf) 60%,var(--bg) 100%)}
.studio .panel .wlc{align-self:flex-start;display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:99px;background:linear-gradient(135deg,rgba(255,176,32,.2),rgba(124,92,255,.22));border:1px solid rgba(255,176,32,.35);color:var(--tx);font-weight:800;font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
.studio .panel h2.hi{font-size:clamp(44px,9vw,64px);line-height:1;font-weight:800;letter-spacing:-.03em;margin:0 0 10px}
10%,30%{transform:rotate(16deg)}20%,40%{transform:rotate(-8deg)}50%{transform:rotate(10deg)}}
.studio .panel .sub{font-size:17px;line-height:1.45;margin-bottom:12px}
.studio .panel .fl{display:flex;align-items:center;gap:10px;counter-increment:stp;margin:22px 0 10px;font-size:12px;letter-spacing:.14em}
.studio .panel .fl::before{content:counter(stp);display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--acc);color:#1b1200;font-size:12px;font-weight:800;letter-spacing:0}
.studio .panel .fl::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--bd),transparent)}
.studio .thumbs{gap:10px}
.studio .thumbs button{border-radius:18px;transition:transform .18s,box-shadow .18s,border-color .18s}
.studio .thumbs button:hover{transform:translateY(-2px)}
.studio .thumbs button.on{transform:translateY(-3px) scale(1.04);box-shadow:0 10px 24px rgba(255,176,32,.28),0 0 0 3px rgba(255,176,32,.55)}
.studio .opts.sw button{width:42px;height:42px;transition:transform .15s}.studio .opts.sw button:hover{transform:scale(1.1)}
.studio .opts button{padding:10px 17px}
.studio .opts button.on{background:linear-gradient(135deg,#ffb020,#ff7a45);color:#1b1200;border-color:transparent}
.studio .go{position:sticky;bottom:-22px;margin:auto -4px -4px;padding:18px 4px 4px;background:linear-gradient(180deg,transparent,var(--sf) 38%)}
.studio .go .btn{font-size:18px;padding:17px;border-radius:16px;box-shadow:0 10px 28px rgba(255,140,60,.35)}
@media(max-width:900px){.studio .panel{padding:22px 20px 26px}.studio .panel h2.hi{font-size:clamp(46px,13vw,60px)}.studio .thumbs{grid-template-columns:repeat(6,1fr);gap:6px}.studio .thumbs button{border-radius:13px}.studio .vp .nm{bottom:2%}.studio .vp .nm b{font-size:24px;text-shadow:0 2px 10px rgba(0,0,0,.5)}.studio .vp .nm small{font-size:13px}}