:root{--fz:1;--bg:#f2f5fc;--card:rgba(255,255,255,.86);--solid:#fff;--text:#13203b;--muted:#7a86a2;--line:rgba(120,140,190,.22);--blue:#3d6bff;--violet:#7b5cff;--gold:#f4c350;--navy:#0b1b3f;--panel:#eaeffa;--shadow:0 8px 24px rgba(40,60,120,.10);--shadow2:0 14px 34px rgba(40,60,120,.18);--ok:#0f7a3a;--okbg:#dff6e8;--bad:#a02222;--badbg:#fde0e0;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0a1020;--card:rgba(24,34,60,.80);--solid:#18223c;--text:#eaf0ff;--muted:#92a0c0;--line:rgba(140,160,210,.20);--panel:#0e1730;--shadow:0 8px 24px rgba(0,0,0,.35);--shadow2:0 14px 34px rgba(0,0,0,.5);--ok:#7de3a4;--okbg:rgba(60,170,110,.22);--bad:#ff9d9d;--badbg:rgba(220,80,80,.22)}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(1200px 600px at 10% -10%,rgba(123,92,255,.14),transparent 60%),radial-gradient(900px 500px at 100% 0,rgba(61,107,255,.14),transparent 55%),var(--bg);background-attachment:fixed;color:var(--text);font-family:"Kantumruy Pro","Khmer OS",system-ui,sans-serif;line-height:1.75;font-size:calc(16px*var(--fz))}
button{font-family:inherit}
.wrap{max-width:560px;margin:0 auto;padding:12px 12px 40px}
/* ---------- entrance animation (only on view change) ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pop{0%{transform:scale(.92);opacity:0}60%{transform:scale(1.03);opacity:1}100%{transform:scale(1)}}
@keyframes blob{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(24px,-18px) scale(1.15)}}
@keyframes shine{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes selPulse{0%{box-shadow:0 0 0 0 rgba(61,107,255,.55)}100%{box-shadow:0 0 0 14px rgba(61,107,255,0)}}
@keyframes modalIn{from{opacity:0;transform:translateY(24px) scale(.95)}to{opacity:1;transform:none}}
.anim>*{animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.anim .card{animation:fadeUp .55s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(var(--i,0)*55ms + 120ms)}
.anim .q,.anim .opt{animation:fadeUp .45s cubic-bezier(.2,.8,.2,1) both}
.anim .panel>*:nth-child(1){animation-delay:.05s}.anim .panel>*:nth-child(2){animation-delay:.1s}.anim .panel>*:nth-child(3){animation-delay:.15s}.anim .panel>*:nth-child(4){animation-delay:.2s}.anim .panel>*:nth-child(5){animation-delay:.25s}.anim .panel>*:nth-child(n+6){animation-delay:.3s}
.anim .bar i{animation:grow 1s .3s cubic-bezier(.2,.8,.2,1) both;transform-origin:left}
/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-radius:30px;padding:30px 18px 22px;text-align:center;color:#fff;background:linear-gradient(135deg,#0d2a6b 0%,#3a3fd9 55%,#7b5cff 100%);box-shadow:var(--shadow2)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(36px);opacity:.55;animation:blob 9s ease-in-out infinite}
.hero::before{width:200px;height:200px;background:#ffcf5a;top:-70px;left:-50px}
.hero::after{width:230px;height:230px;background:#2fd1ff;bottom:-110px;right:-60px;animation-delay:-4s}
.hero>*{position:relative;z-index:1}
.hero h1{font-family:Moul,serif;font-weight:400;font-size:21px;line-height:1.8;color:#fff3c9;margin:0 0 16px;text-shadow:0 2px 14px rgba(0,0,0,.3)}
.stat{display:flex;align-items:center;gap:14px;text-align:left;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:22px;padding:14px 16px}
.stat b{display:block;font-size:36px;line-height:1.15;color:#ffe08a;font-variant-numeric:tabular-nums}
.stat small{color:#e6ecff}
/* ---------- top bar buttons ---------- */
.bar2{display:flex;gap:8px;margin:14px 0;flex-wrap:wrap}
.bar2 button{flex:1;min-width:120px;padding:11px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card);backdrop-filter:blur(10px);color:var(--text);font-size:13px;cursor:pointer;box-shadow:var(--shadow);transition:transform .18s,box-shadow .2s}
.bar2 button:hover{transform:translateY(-2px);box-shadow:var(--shadow2)}
.bar2 button:active{transform:scale(.96)}
.bar2 button:disabled{opacity:.6;cursor:default;transform:none}
.search{width:100%;margin:2px 0 14px;padding:15px 20px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;box-shadow:var(--shadow);outline:none;transition:box-shadow .2s,border-color .2s}
.search:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(61,107,255,.18)}
/* ---------- cards ---------- */
.card{background:var(--card);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:26px;padding:16px;margin-bottom:14px;box-shadow:var(--shadow);transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow2)}
.row{display:flex;gap:14px}
.logo{width:64px;height:64px;flex:none;border-radius:22px;display:grid;place-items:center;font-size:28px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 8px 18px rgba(61,107,255,.35);transition:transform .35s}
.card:hover .logo{transform:rotate(-6deg) scale(1.06)}
.row h3{margin:0 0 2px;font-size:18px}
.en{font-size:11px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.meta{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:6px}
.bar{height:8px;background:var(--line);border-radius:99px;margin:10px 0 14px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--blue),var(--violet),var(--gold));background-size:200% 100%;animation:shine 3s linear infinite}
/* ---------- buttons ---------- */
.btns{display:flex;gap:10px}
.btn{flex:1.2;padding:13px;border:0;border-radius:16px;font-weight:700;font-size:15px;cursor:pointer;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 8px 18px rgba(61,107,255,.32);transition:transform .15s,box-shadow .2s,filter .2s;position:relative;overflow:hidden}
.btn:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 24px rgba(61,107,255,.42)}
.btn:active{transform:scale(.96)}
.btn.alt{flex:1;color:var(--text);background:var(--card);border:1px solid var(--line);box-shadow:none}
.btn.alt:hover{background:var(--solid);box-shadow:var(--shadow)}
/* ---------- sub pages ---------- */
.top{position:relative;overflow:hidden;color:#fff;text-align:center;padding:20px 12px 26px;border-radius:0 0 34px 34px;background:linear-gradient(135deg,#0d2a6b,#3a3fd9 60%,#7b5cff);box-shadow:var(--shadow2)}
.top::after{content:"";position:absolute;inset:auto 0 0 0;height:3px;background:linear-gradient(90deg,transparent,#ffe08a,transparent);background-size:200% 100%;animation:shine 3.2s linear infinite}
.top .logo{margin:0 auto 10px;width:76px;height:76px;background:rgba(255,255,255,.2);box-shadow:none;border:2px solid rgba(255,255,255,.55)}
.top h2{margin:6px 0 2px;font-family:Moul,serif;font-weight:400;font-size:20px}
.back{background:rgba(255,255,255,.16);border:0;color:#fff;font-weight:700;cursor:pointer;float:left;border-radius:999px;padding:6px 14px;transition:background .2s,transform .15s}
.back:hover{background:rgba(255,255,255,.3)}.back:active{transform:scale(.94)}
.tabs{display:flex;gap:6px;padding:10px 8px 0}
.tabs button{flex:1;padding:11px 4px;border:0;background:transparent;color:var(--muted);font-size:13px;cursor:pointer;border-radius:14px;transition:background .25s,color .25s}
.tabs button.on{color:#fff;font-weight:700;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 6px 14px rgba(61,107,255,.3)}
.panel{padding:16px 12px 40px;min-height:60vh}
.panel h3{margin:0 0 12px;font-size:21px;display:flex;justify-content:space-between;align-items:center}
.panel h3 a{font-size:14px;color:var(--blue);cursor:pointer}
/* ---------- options & questions ---------- */
.opt{display:flex;align-items:center;gap:12px;width:100%;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:18px;padding:14px 16px;margin-bottom:10px;font:inherit;font-size:16px;text-align:left;cursor:pointer;box-shadow:var(--shadow);transition:transform .18s,box-shadow .2s,border-color .2s,background .2s}
.opt:hover{transform:translateX(5px);border-color:var(--blue)}
.opt:active{transform:scale(.98)}
.opt .ic{color:var(--blue)}
.opt.sel{border-color:var(--blue);background:linear-gradient(135deg,rgba(61,107,255,.16),rgba(123,92,255,.16));font-weight:600;animation:selPulse .6s ease-out}
.opt.right{background:var(--okbg);color:var(--ok);border-color:transparent}
.opt.wrong{background:var(--badbg);color:var(--bad);border-color:transparent}
.q{background:var(--card);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:22px;padding:16px;margin-bottom:14px;box-shadow:var(--shadow)}
.q .opt{font-size:15px;padding:12px 14px}
.note{font-size:12px;color:var(--muted);text-align:center;margin-top:16px}
/* ---------- quiz timer ---------- */
.timer{position:sticky;top:0;z-index:5;padding:8px 10px 6px;background:linear-gradient(135deg,#0d2a6b,#3a3fd9);color:#fff;box-shadow:0 8px 22px rgba(20,30,90,.35);border-radius:0 0 22px 22px}
.trow{display:flex;gap:8px;align-items:center;justify-content:space-between}
.timer button{border:0;border-radius:999px;padding:8px 14px;font-weight:700;cursor:pointer;background:rgba(255,255,255,.18);color:#fff;transition:transform .15s,background .2s}
.timer button:active{transform:scale(.94)}
.timer button.go{background:var(--gold);color:#3b2a00}
.chip{background:rgba(255,255,255,.16);border-radius:999px;padding:6px 12px;font-weight:700;font-variant-numeric:tabular-nums}
.tbar{height:5px;margin:8px 4px 2px;border-radius:99px;background:rgba(255,255,255,.2);overflow:hidden}
.tbar i{display:block;height:100%;background:linear-gradient(90deg,#7de3a4,var(--gold));transition:width 1s linear}
/* ---------- result ring ---------- */
.ring{position:relative;width:150px;height:150px;margin:8px auto 0}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:9;stroke-linecap:round}
.rb{stroke:rgba(255,255,255,.22)}
.rf{stroke:#ffe08a;transition:stroke-dashoffset 1.2s cubic-bezier(.2,.8,.2,1)}
.rt{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.rt b{font-size:38px;line-height:1;color:#fff3c9}.rt small{color:#dfe6ff}
.pct{font-size:18px;font-weight:700;margin-top:6px;color:#fff3c9}
/* ---------- forms & modal ---------- */
.inp{width:100%;padding:14px 16px;margin-bottom:10px;border-radius:16px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;outline:none;transition:box-shadow .2s,border-color .2s}
.inp:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(61,107,255,.18)}
textarea.inp{resize:vertical}select.inp{appearance:auto}
.err{color:#e0453a;font-size:13px;margin:6px 0}
.hint{font-size:13px;color:var(--muted);background:rgba(61,107,255,.08);border-radius:14px;padding:10px 12px;margin:0 0 12px}
.modal{position:fixed;inset:0;background:rgba(5,10,30,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:grid;place-items:center;z-index:50;padding:20px;animation:fadeIn .25s both}
.box{background:var(--solid);color:var(--text);border-radius:26px;padding:22px;max-width:420px;width:100%;box-shadow:0 30px 70px rgba(0,0,0,.45);animation:modalIn .35s cubic-bezier(.2,.8,.2,1) both}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

.anim>.modal{animation:fadeIn .25s both}
.note a{color:var(--blue);font-weight:700;cursor:pointer;display:inline-block;padding:8px 14px;border-radius:999px;background:rgba(61,107,255,.12)}

.top.stick{position:sticky;top:0;z-index:20;padding:12px 12px 14px;border-radius:0 0 26px 26px}
.top.stick h2{margin:4px 0 0;font-size:18px}

.sans{margin-top:10px;padding:12px 14px;border-radius:14px;background:var(--okbg);color:var(--ok);font-size:15px;animation:fadeUp .35s both}
.panel h3 small{margin-left:8px}

.dopt{padding:10px 14px;margin-top:8px;border:1px solid var(--line);border-radius:14px;background:var(--card);font-size:15px}

.logo.img{background:transparent;box-shadow:none;border:0;padding:2px}
.logo img{width:100%;height:100%;object-fit:contain;display:block}
.top .logo.img{background:transparent;border:0}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.applogo{display:block;width:92px;max-height:104px;object-fit:contain;margin:0 auto 6px;filter:drop-shadow(0 8px 16px rgba(0,0,0,.35));animation:pop .9s cubic-bezier(.2,.8,.2,1) both,float 5s ease-in-out 1s infinite}

.stat{flex-wrap:wrap}
.stat .chips{width:100%;display:flex;gap:8px;flex-wrap:wrap;margin-top:2px}
.chip2{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);border-radius:999px;padding:6px 12px;font-size:13px;color:#fff;animation:pop .6s .4s cubic-bezier(.2,.8,.2,1) both}
.stat .chip2 b{display:inline;font-size:15px;line-height:1.2;margin-left:4px;color:#ffe08a}

.peekbtn{margin-top:6px;border:1px dashed var(--line);background:transparent;color:var(--blue);padding:8px 14px;border-radius:999px;font:inherit;font-size:13px;cursor:pointer;transition:background .2s,transform .15s}
.peekbtn:hover{background:rgba(61,107,255,.1)}.peekbtn:active{transform:scale(.95)}
.opt.dim{opacity:.5}.opt:disabled{cursor:default;transform:none}
.note2{font-size:13px;color:var(--ok);margin-top:6px}
.st{display:inline-block;padding:3px 10px;border-radius:999px;font-size:13px;font-weight:700}
.st.ok{background:var(--okbg);color:var(--ok)}.st.bad{background:var(--badbg);color:var(--bad)}.st.un{background:rgba(120,140,190,.2);color:var(--muted)}.st.pk{background:rgba(244,195,80,.25);color:#b27a00}

/* ---- hero account bar ---- */
@keyframes slideIn{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
@keyframes sweep{0%{transform:translateX(-120%) skewX(-20deg)}60%,100%{transform:translateX(320%) skewX(-20deg)}}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(255,95,95,.55)}100%{box-shadow:0 0 0 12px rgba(255,95,95,0)}}
@keyframes spinSlow{to{transform:rotate(360deg)}}
.hero{padding-top:64px}
.herobar{position:absolute;top:14px;left:14px;right:14px;display:flex;justify-content:flex-end;align-items:center;gap:8px;z-index:3;animation:slideIn .6s .15s cubic-bezier(.2,.8,.2,1) both}
.acct{position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:8px;max-width:100%;padding:5px 14px 5px 5px;border-radius:999px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.16);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:#fff;font:inherit;font-size:13px;font-weight:700;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s}
.acct:hover{background:rgba(255,255,255,.26);transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.25)}
.acct:active{transform:scale(.96)}
.acct .av{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex:none;font-size:15px;background:linear-gradient(135deg,#ffe08a,#ffb347);color:#3b2a00}
.acct .em{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px}
.acct.login{background:linear-gradient(135deg,#ffe08a,#ffb347);color:#3b2a00;border-color:transparent}
.acct.login .av{background:rgba(255,255,255,.55)}
.acct.login::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);animation:sweep 3.2s ease-in-out 1s infinite}
.acct.off{cursor:default;padding:7px 14px;font-weight:400}
.rbtn{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.16);backdrop-filter:blur(10px);color:#fff;font-size:16px;cursor:pointer;display:grid;place-items:center;transition:transform .25s,background .2s}
.rbtn:hover{background:rgba(255,255,255,.3);transform:scale(1.1)}
.rbtn.gear:hover{animation:spinSlow 1.2s linear infinite}
/* ---- wrong-answers tile ---- */
.tile{position:relative;display:flex;align-items:center;gap:14px;width:100%;margin:14px 0;padding:14px 16px;border:1px solid var(--line);border-radius:22px;background:var(--card);backdrop-filter:blur(10px);color:var(--text);font:inherit;text-align:left;cursor:pointer;box-shadow:var(--shadow);overflow:hidden;transition:transform .22s cubic-bezier(.2,.8,.2,1),box-shadow .22s,border-color .2s}
.tile::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,#ff7a7a,#ffb347)}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow2);border-color:rgba(255,122,122,.5)}
.tile:active{transform:scale(.98)}
.tile .ti{width:46px;height:46px;border-radius:16px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,rgba(255,122,122,.25),rgba(255,179,71,.25));flex:none;transition:transform .35s}
.tile:hover .ti{transform:rotate(-8deg) scale(1.08)}
.tile .tt{flex:1;min-width:0;display:flex;flex-direction:column}
.tile .tt b{font-size:16px}.tile .tt small{color:var(--muted);font-size:13px}
.badge{min-width:38px;height:34px;padding:0 12px;border-radius:999px;display:grid;place-items:center;font-weight:700;color:#fff;background:linear-gradient(135deg,#ff5f5f,#ff8a4c);animation:ping 1.8s ease-out infinite}
.badge.zero{background:var(--okbg);color:var(--ok);animation:none}
.tile .arr{font-size:26px;color:var(--muted);transition:transform .25s,color .2s}
.tile:hover .arr{transform:translateX(5px);color:var(--text)}
.anim .tile{animation:fadeUp .55s .1s cubic-bezier(.2,.8,.2,1) both}

/* answered-history tile */
.hk{font-weight:700}.hk.ok{color:var(--ok)}.hk.bad{color:var(--bad)}
.tile::before{background:linear-gradient(180deg,#3ccf7e,#ff7a7a)}

/* result buttons stay visible while scrolling */
.stickybar{position:sticky;bottom:0;z-index:20;margin:14px -6px 0;padding:12px 6px calc(12px + env(safe-area-inset-bottom,0px));background:linear-gradient(180deg,transparent,var(--bg) 30%);}
.stickybar .btn{box-shadow:var(--shadow2)}

/* ================= UI v2 ================= */
:root[data-theme="dark"]{--bg:#0a1020;--card:rgba(24,34,60,.80);--solid:#18223c;--text:#eaf0ff;--muted:#92a0c0;--line:rgba(140,160,210,.20);--panel:#0e1730;--shadow:0 8px 24px rgba(0,0,0,.35);--shadow2:0 14px 34px rgba(0,0,0,.5);--ok:#7de3a4;--okbg:rgba(60,170,110,.22);--bad:#ff9d9d;--badbg:rgba(220,80,80,.22);color-scheme:dark}
:root[data-theme="light"]{color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){color-scheme:dark}}
.opt{font-size:calc(16px*var(--fz))}.q .opt{font-size:calc(15px*var(--fz))}
.sans,.dopt{font-size:calc(15px*var(--fz))}
.q b{line-height:1.8}

/* home: personal progress */
.me{display:flex;align-items:center;gap:16px;text-align:left;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:22px;padding:14px 16px}
.mring{width:104px;height:104px;margin:0;flex:none}
.mring .rt b{font-size:28px}.mring .rt small{font-size:11px}
.mst{flex:1;display:flex;flex-direction:column;gap:6px;min-width:0}
.mst>div{display:flex;align-items:baseline;gap:8px;color:#e6ecff;font-size:13px}
.mst span{width:20px;text-align:center}
.mst b{font-size:20px;color:#ffe08a;font-variant-numeric:tabular-nums;min-width:28px}
.sys{margin-top:10px;font-size:12px;color:#d7e0ff;opacity:.9}

/* bottom navigation */
.bnav{position:fixed;left:0;right:0;bottom:0;z-index:40;padding:6px 10px calc(6px + env(safe-area-inset-bottom,0px));background:var(--card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(20,30,80,.12)}
.anim>.bnav{animation:none}
.bin{max-width:560px;margin:0 auto;display:flex;gap:4px}
.bnav button{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 2px;border:0;border-radius:16px;background:transparent;color:var(--muted);font:inherit;font-size:12px;cursor:pointer;transition:background .2s,color .2s,transform .15s}
.bnav button:active{transform:scale(.92)}
.bnav .bi{font-size:20px;line-height:1.2;transition:transform .25s}
.bnav button.on{color:var(--blue);font-weight:700;background:rgba(61,107,255,.12)}
.bnav button.on .bi{transform:translateY(-2px) scale(1.1)}
body.hasnav .wrap,body.hasnav .panel{padding-bottom:100px}

/* quiz: one question per screen */
.qpanel{padding-top:10px}
.qprog{height:6px;border-radius:99px;background:var(--line);overflow:hidden;margin:0 2px 12px}
.qprog i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--blue),var(--violet));transition:width .35s cubic-bezier(.2,.8,.2,1)}
.qno{font-size:13px;color:var(--muted);margin-bottom:6px}
.qt{font-size:calc(19px*var(--fz));font-weight:700;line-height:1.85;margin-bottom:14px}
.opt.big{min-height:58px;padding:12px 14px;margin-bottom:10px;font-size:calc(16px*var(--fz))}
.opt.big .ot{flex:1}
.lt{width:34px;height:34px;flex:none;border-radius:11px;display:grid;place-items:center;font-weight:700;background:rgba(61,107,255,.12);color:var(--blue);transition:background .2s,color .2s}
.opt.right .lt{background:#22a85a;color:#fff}.opt.wrong .lt{background:#e04848;color:#fff}
.opt.right{animation:pop .35s both}.opt.wrong{animation:shake .4s both}
@keyframes shake{0%,100%{transform:none}20%{transform:translateX(-7px)}40%{transform:translateX(7px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}
.fb{margin-top:4px;padding:10px 14px;border-radius:14px;font-weight:700;animation:pop .35s both}
.fb.ok{background:var(--okbg);color:var(--ok)}.fb.bad{background:var(--badbg);color:var(--bad)}
@keyframes inR{from{opacity:0;transform:translateX(48px)}to{opacity:1;transform:none}}
@keyframes inL{from{opacity:0;transform:translateX(-48px)}to{opacity:1;transform:none}}
.qcard.sl{animation:inR .3s cubic-bezier(.2,.8,.2,1) both}.qcard.sr{animation:inL .3s cubic-bezier(.2,.8,.2,1) both}
.swipehint{text-align:center;font-size:12px;color:var(--muted);margin:0 0 8px}
.qnav{position:sticky;bottom:0;z-index:10;display:flex;gap:10px;margin:0 -6px;padding:12px 6px calc(12px + env(safe-area-inset-bottom,0px));background:linear-gradient(180deg,transparent,var(--bg) 35%)}
.btn:disabled{opacity:.45;cursor:default;transform:none;filter:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:8px;max-height:52vh;overflow:auto;margin-top:12px;padding:2px}
.gq{height:44px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;font-weight:700;cursor:pointer}
.gq.ok{background:var(--okbg);color:var(--ok);border-color:transparent}.gq.bad{background:var(--badbg);color:var(--bad);border-color:transparent}.gq.pk{background:rgba(244,195,80,.25);border-color:transparent}
.gq.cur{outline:2px solid var(--blue);outline-offset:1px}
.glg{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:8px}
.glg .gq{display:inline-grid;place-items:center;width:28px;height:28px;font-size:12px;cursor:default}

/* result by topic */
.tpr{margin-top:12px}.tpl{display:flex;justify-content:space-between;gap:10px;font-size:14px}
.bar.sm{height:8px;margin:6px 0 0}
.bar i.lo{background:#e65a5a;animation:none}.bar i.mid{background:var(--gold);animation:none}.bar i.hi{background:#2fbf6b;animation:none}

/* settings */
.lbl{font-size:13px;color:var(--muted);margin:14px 0 6px}
.seg{display:flex;gap:6px;background:var(--panel);padding:4px;border-radius:14px}
.seg button{flex:1;padding:9px 4px;border:0;border-radius:11px;background:transparent;color:var(--text);font:inherit;font-size:13px;cursor:pointer;transition:background .2s}
.seg button.on{background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;font-weight:700}

/* admin search */
.adfind{display:flex;gap:8px;margin:12px 0 4px}
.adfind .inp{margin:0}.adfind #as{flex:1}.adfind #aj{width:76px;flex:none;text-align:center}
.adfind .btn{flex:none;padding:0 16px}
@keyframes flash{0%,100%{box-shadow:var(--shadow)}30%{box-shadow:0 0 0 4px var(--gold)}}
.q.flash{animation:flash 1.6s ease both}
.trow{gap:6px}.timer button,.timer .chip{white-space:nowrap;padding:7px 11px;font-size:14px}

/* test setup sheet */
.box.setup{max-height:calc(100vh - 40px);overflow-y:auto}
.mcard{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mcard button{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:12px;border:2px solid var(--line);border-radius:16px;background:var(--card);color:var(--text);font:inherit;text-align:left;cursor:pointer;transition:border-color .2s,background .2s,transform .15s}
.mcard button:active{transform:scale(.97)}
.mcard .mi{font-size:24px}.mcard b{font-size:15px}.mcard small{font-size:12px;color:var(--muted);line-height:1.5}
.mcard button.on{border-color:var(--blue);background:linear-gradient(135deg,rgba(61,107,255,.14),rgba(123,92,255,.14))}
.seg{flex-wrap:wrap}.seg button{min-width:60px}
.tg{display:flex;flex-direction:column;gap:8px}
.tg label{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:14px;background:var(--panel);font-size:14px;cursor:pointer}
.tg small{color:var(--muted)}
.tg input{appearance:none;-webkit-appearance:none;flex:none;width:46px;height:26px;border-radius:99px;background:var(--line);position:relative;cursor:pointer;transition:background .2s}
.tg input::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.25);transition:transform .2s}
.tg input:checked{background:linear-gradient(135deg,var(--blue),var(--violet))}
.tg input:checked::after{transform:translateX(20px)}
.modetag{display:inline-block;font-size:12px;font-weight:700;color:var(--blue);background:rgba(61,107,255,.12);padding:3px 10px;border-radius:99px;margin:0 0 10px 2px}
.gq.an{background:rgba(61,107,255,.18);color:var(--blue);border-color:transparent}
.qt.sm{font-size:calc(17px*var(--fz));margin-bottom:10px}
/* time per question */
.secbox{padding:10px 12px;border-radius:14px;background:var(--panel)}
.secrow{display:flex;align-items:center;gap:8px}
.secrow button{width:40px;height:40px;flex:none;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:20px;font-weight:700;cursor:pointer}
.secrow button:active{transform:scale(.92)}
.secrow input{width:64px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;font-size:18px;font-weight:700;text-align:center;outline:none}
.secrow input:focus{border-color:var(--blue)}
.secrow span{flex:1;font-size:13px;color:var(--muted)}
.secp{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.secp button{flex:1;min-width:44px;padding:7px 4px;border:0;border-radius:10px;background:var(--card);color:var(--text);font:inherit;font-size:13px;cursor:pointer}
.secp button.on{background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;font-weight:700}
.sect{margin-top:8px;font-size:12px;color:var(--muted)}
/* total questions in system — big */
.me{flex-wrap:wrap;row-gap:12px}
.mst{flex:1 1 150px}
.sysbig{flex:1 1 230px;text-align:left;padding:4px 0 4px 18px;border-left:1px solid rgba(255,255,255,.25)}
.sysbig>small{font-size:13px;color:#d7e0ff}
.sysbig .sb{display:flex;align-items:center;gap:10px;margin:2px 0 8px}
.sysbig .sb b{font-size:52px;line-height:1.1;font-weight:800;color:#ffe08a;font-variant-numeric:tabular-nums;text-shadow:0 4px 18px rgba(0,0,0,.18)}
.sysbig .sb span{font-size:13px;line-height:1.5;color:#e6ecff}
.schips{display:flex;gap:8px;flex-wrap:wrap}
.schips span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);border-radius:99px;padding:5px 12px;font-size:13px;color:#fff;white-space:nowrap}
.schips b{color:#ffe08a}
@media (max-width:520px){.sysbig{flex-basis:100%;border-left:0;border-top:1px solid rgba(255,255,255,.25);padding:12px 0 0}}
.modal.still,.modal.still .box,.modal.still *{animation:none!important}
.modal.su .box{overscroll-behavior:contain}
/* guest / Google login */
.gbtn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:12px 16px;margin-top:10px;border:1px solid #dadce0;border-radius:14px;background:#fff;color:#1f1f1f;font:inherit;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.12);transition:transform .15s,box-shadow .2s}
.gbtn:active{transform:scale(.97)}.gbtn:hover{box-shadow:0 4px 14px rgba(0,0,0,.2)}
.gbtn.big{padding:14px 16px;font-size:16px;margin:4px 0 0}
.gic{flex:none}
.lockb{margin:12px 0 4px;padding:12px 14px;border-radius:16px;background:linear-gradient(135deg,rgba(244,195,80,.18),rgba(255,140,60,.14));border:1px solid rgba(244,195,80,.45)}
.lockb .lt1{font-size:15px}.lockb .lt2{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.65}
.gcard{background:linear-gradient(135deg,rgba(244,195,80,.16),rgba(123,92,255,.14));border:1px solid rgba(244,195,80,.4)}
.gtop{display:flex;align-items:center;gap:12px}
.gtop .gift{font-size:32px;flex:none;animation:pop .5s both}
.gtop b{display:block;font-size:16px}.gtop small{display:block;color:var(--muted);font-size:13px;margin-top:2px}
.or{display:flex;align-items:center;gap:10px;margin:16px 0 6px;color:var(--muted);font-size:13px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.authc{text-align:center;padding:22px 18px}
.authc .aic{font-size:44px;line-height:1.2;animation:pop .5s both}
.authc>b{display:block;font-size:18px;margin:6px 0 4px}
.authc>p{color:var(--muted);font-size:14px;margin:0 0 6px}
.opt.free{border-color:rgba(244,195,80,.55);background:linear-gradient(135deg,rgba(244,195,80,.14),transparent)}
.opt.lockd{opacity:.6}
/* admin: users */
.btn.danger{background:linear-gradient(135deg,#e04848,#c02f5a);color:#fff;box-shadow:0 6px 16px rgba(224,72,72,.3)}
.ustat{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.ustat>div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:10px;text-align:center}
.ustat b{display:block;font-size:24px;color:var(--blue)}.ustat b.bad{color:var(--bad)}
.ustat small{font-size:12px;color:var(--muted)}
.urow .uh{display:flex;align-items:center;gap:10px}
.uav{width:40px;height:40px;flex:none;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet))}
.ui{flex:1;min-width:0}.ui b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.ui small{color:var(--muted);font-size:13px}
.ubadge{flex:none;font-size:12px;font-weight:700;color:var(--bad);background:var(--badbg);padding:3px 10px;border-radius:99px}
.um{display:flex;flex-wrap:wrap;gap:4px 14px;margin-top:8px;font-size:12px;color:var(--muted)}
.ur{margin-top:8px;font-size:13px;padding:8px 10px;border-radius:12px;background:var(--badbg);color:var(--bad)}
.urow.ubl .uav{background:#9aa3b8}
/* donation */
.donbtn{margin-right:auto;display:inline-flex;align-items:center;gap:6px;padding:7px 14px 7px 10px;border-radius:99px;border:1px solid rgba(255,255,255,.35);background:linear-gradient(135deg,rgba(255,120,170,.9),rgba(255,170,90,.9));color:#fff;font:inherit;font-weight:700;font-size:14px;cursor:pointer;box-shadow:0 6px 18px rgba(255,100,150,.35);transition:transform .15s}
.donbtn:active{transform:scale(.94)}
.donbtn .dh{display:inline-block;animation:beat 1.6s ease-in-out infinite}
@keyframes beat{0%,100%{transform:scale(1)}15%{transform:scale(1.25)}30%{transform:scale(1)}45%{transform:scale(1.15)}}
.box.don{max-height:calc(100vh - 40px);overflow-y:auto;text-align:center}
.don-h{display:flex;align-items:center;justify-content:center;gap:8px}
.don-h span{font-size:28px}.don-h b{font-size:20px}
.don-m{color:var(--muted);font-size:14px;margin:6px 0 12px}
.qrbox{background:#fff;border-radius:18px;padding:12px;margin:0 auto;max-width:300px;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.qrbox img{display:block;width:100%;height:auto;border-radius:8px}
.qrbox.sm{max-width:200px}
.bankinfo{margin:12px 0 0;text-align:left;background:var(--panel);border-radius:14px;padding:6px 12px}
.bankinfo>div{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--line)}
.bankinfo>div:last-child{border-bottom:0}
.bankinfo small{color:var(--muted);font-size:12px;min-width:76px}
.bankinfo b{flex:1;font-size:15px;word-break:break-all}
.cpy{flex:none;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;padding:4px 10px;font:inherit;font-size:12px;cursor:pointer}
.don-tip{font-size:12px;color:var(--muted);margin:12px 0}
.donors{margin-top:14px;text-align:left;padding:12px;border-radius:14px;background:linear-gradient(135deg,rgba(255,120,170,.12),rgba(255,170,90,.1));border:1px solid rgba(255,140,170,.3)}
.dlist{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.dlist span{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:4px 10px;font-size:13px}
.dlist small,.drow small{color:var(--muted)}
.drow{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 0;border-bottom:1px solid var(--line)}
.drow .btn{flex:none;padding:6px 12px}
.box.thx{position:relative;overflow:hidden}
.thx-ic{font-size:60px;animation:pop .6s both}
.thx-t{display:block;font-size:22px;margin:4px 0 8px;background:linear-gradient(135deg,#ff6fa5,#ffb055);-webkit-background-clip:text;background-clip:text;color:transparent}
.box.thx p{font-size:14px;margin:6px 0}
.hearts{position:absolute;inset:0;pointer-events:none}
.hearts span{position:absolute;bottom:-30px;left:calc(10% + var(--i)*18%);font-size:24px;animation:floatUp 2.6s calc(var(--i)*.25s) ease-out infinite}
@keyframes floatUp{0%{transform:translateY(0) scale(.6);opacity:0}15%{opacity:1}100%{transform:translateY(-420px) scale(1.2) rotate(15deg);opacity:0}}
@media (max-width:420px){.herobar .acct .em{display:none}.herobar .acct{padding-right:4px}}