:root{
  --sky1:#8fd3ff; --sky2:#eaf7ff; --card:#ffffff; --ink:#28324e; --muted:#6b7a99;
  --play:#ff9f1c; --play-hi:#ffb84d; --good:#2ecc71; --good-bg:#e8f9f0;
  --bad:#ff6b6b; --bad-bg:#ffecec; --line:#dbe7f5;
  --pink:#ff6fa5; --purple:#9b6dff; --blue:#31a8ff; --green:#37c978; --orange:#ff9f1c;
  --ff:'Fredoka',sans-serif; --fs:'Fraunces',serif;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{font-family:var(--ff);color:var(--ink);min-height:100vh;
  background:linear-gradient(180deg,var(--sky1),var(--sky2) 45%,#fdfdff);
  background-attachment:fixed;overflow-x:hidden}
h1{font-weight:700;font-size:clamp(1.8rem,4.5vw,2.6rem)}
h2{font-weight:600;font-size:1.3rem;color:var(--purple);margin-bottom:.7rem}
.eyebrow{font-size:.85rem;letter-spacing:.2em;text-transform:uppercase;color:var(--orange);font-weight:700;margin-bottom:.3rem}
.muted{color:var(--muted)}

#topbar{position:sticky;top:0;z-index:40;display:flex;justify-content:space-between;align-items:center;
  padding:.6rem 1.2rem;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:3px solid var(--line)}
#topbar.hidden{display:none}
.tb-left{display:flex;align-items:center;gap:.8rem}
.tb-logo{font-family:var(--fs);font-weight:700;font-size:1.35rem;letter-spacing:.08em}
.tb-logo span{color:var(--orange)} .tb-logo em{font-family:var(--ff);font-style:normal;color:var(--pink);font-size:1rem;letter-spacing:.25em}
#tbStars{font-weight:700;color:var(--orange);font-size:1.15rem}
.icon-btn{width:46px;height:46px;border-radius:14px;border:2px solid var(--line);background:#fff;font-size:1.3rem;cursor:pointer}

.screen{display:none;padding:clamp(1rem,3vw,2rem) clamp(.8rem,4vw,2rem)}
.screen.on{display:block}
.wrap{max-width:980px;margin:0 auto}
.panel{max-width:560px;margin:4vh auto;background:#fff;border:4px solid var(--line);border-radius:28px;padding:2rem;text-align:center;box-shadow:0 14px 40px rgba(80,120,200,.14)}
.row{display:flex;gap:1rem;margin-top:1.5rem;flex-wrap:wrap;justify-content:center}

.btn{font-family:var(--ff);font-weight:700;border-radius:18px;border:none;cursor:pointer;
  padding:.85rem 1.8rem;font-size:1.05rem;color:#fff;background:var(--purple);
  box-shadow:0 5px 0 rgba(0,0,0,.15);transition:transform .1s, box-shadow .1s}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 rgba(0,0,0,.15)}
.btn.play{background:var(--play);font-size:1.25rem;padding:1.05rem 2.4rem}
.btn.play:hover{background:var(--play-hi)}
.btn.big{font-size:1.15rem;min-height:58px}
.btn.small{padding:.5rem 1rem;font-size:.9rem;min-height:42px;border-radius:12px}
.btn.ghost{background:#fff;color:var(--ink);border:3px solid var(--line)}
.btn.good{background:var(--good)}
.btn.wide{width:100%}

/* splash */
#scr-splash.on{display:flex;align-items:center;justify-content:center;text-align:center;min-height:calc(100vh - 70px)}
.splash-inner{display:flex;flex-direction:column;align-items:center;gap:1.1rem}
.logo-word{font-family:var(--fs);font-weight:700;font-size:clamp(64px,16vw,150px);line-height:1;color:#fff;
  text-shadow:0 4px 0 #d98200,0 8px 24px rgba(0,0,0,.18)}
.logo-word span{color:var(--orange)} .logo-word em{font-family:var(--ff);font-style:normal;color:var(--pink);font-size:.32em;letter-spacing:.4em;vertical-align:.35em}
.logo-tag{color:#3a5a8c;font-weight:600;letter-spacing:.2em;font-size:clamp(.8rem,2vw,1rem);text-transform:uppercase}
.splash-mascot{font-size:4.2rem;animation:bounce 1.6s ease infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.splash-contact{color:var(--muted);font-weight:600}
.splash-sub{color:var(--muted)}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.splash-inner>*{animation:rise .7s ease both}
.splash-inner>*:nth-child(2){animation-delay:.12s}.splash-inner>*:nth-child(3){animation-delay:.24s}.splash-inner>*:nth-child(4){animation-delay:.36s}

/* name + grade */
.big-input{width:100%;margin-top:.8rem;background:#f4f9ff;border:3px solid var(--line);border-radius:18px;
  font-family:var(--ff);font-size:1.5rem;font-weight:600;padding:.9rem;text-align:center;color:var(--ink)}
.big-input:focus{border-color:var(--orange);outline:none}
@keyframes shake{0%,100%{transform:none}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}
.shake{animation:shake .35s}
.grade-pick{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-top:.8rem}
.gcard{background:#fff;border:4px solid var(--line);border-radius:22px;padding:1rem .5rem;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:.2rem;transition:border-color .15s,transform .15s}
.gcard:hover{transform:translateY(-4px)} .gcard.sel{border-color:var(--orange);background:#fff8ec}
.gcard .gn{font-size:2.6rem;font-weight:700;color:var(--purple)}
.gcard.sel .gn{color:var(--orange)} .gcard small{color:var(--muted);font-weight:600}

/* hub */
.hub-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.2rem;flex-wrap:wrap}
.grade-tabs{display:flex;gap:.6rem;margin-bottom:1.2rem}
.gtab{flex:1;padding:.7rem;border-radius:16px;border:3px solid var(--line);background:#fff;
  font-family:var(--ff);font-weight:700;font-size:1rem;color:var(--muted);cursor:pointer}
.gtab.sel{border-color:var(--orange);color:var(--orange);background:#fff8ec}
.brow{display:flex;align-items:center;gap:1.1rem;background:#fff;border:4px solid var(--line);
  border-radius:24px;padding:1rem 1.2rem;margin-bottom:.9rem;box-shadow:0 6px 18px rgba(80,120,200,.1);
  transition:transform .15s}
.brow:hover{transform:translateY(-3px) scale(1.01)}
.bemb{font-size:2.8rem;width:72px;height:72px;display:grid;place-items:center;background:#f4f9ff;border-radius:20px;flex:none}
.binfo{flex:1;min-width:0}
.binfo h3{font-size:1.25rem;font-weight:700;color:var(--ink)}
.binfo p{color:var(--muted);font-size:.9rem}
.bstars{margin-top:.25rem;font-size:.95rem;color:var(--orange);letter-spacing:.1em}
.lvl-dots{display:flex;gap:.45rem;margin-top:.5rem;flex-wrap:wrap}
.ldot{width:34px;height:34px;border-radius:50%;border:3px solid var(--line);background:#fff;
  font-weight:700;color:var(--muted);cursor:pointer;font-size:.9rem;display:grid;place-items:center}
.ldot.done{background:var(--green);border-color:var(--green);color:#fff}
.ldot.locked{opacity:.4;cursor:not-allowed}
.ldot:hover:not(.locked){border-color:var(--orange);color:var(--orange)}
.hub-progress{margin-top:1.2rem;padding:.9rem 1.2rem;background:#fff;border:3px solid var(--line);
  border-radius:18px;color:var(--muted);font-weight:600}

/* quiz */
.quiz-wrap{max-width:820px;margin:0 auto}
.q-meta{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem;flex-wrap:wrap}
.chip{background:#fff;border:3px solid var(--line);border-radius:99px;padding:.4rem 1rem;font-weight:700;color:var(--purple);font-size:.85rem}
.chip.plain{color:var(--muted)}
.q-progress{flex:1;min-width:150px;height:16px;border-radius:8px;background:#fff;border:3px solid var(--line);overflow:hidden}
.q-fill{height:100%;width:0;background:linear-gradient(90deg,var(--green),var(--blue));transition:width .4s}
.q-card{background:#fff;border:4px solid var(--line);border-radius:28px;padding:clamp(1.2rem,3.5vw,2rem);box-shadow:0 10px 30px rgba(80,120,200,.12)}
.q-prompt{text-align:center;font-size:1.3rem;font-weight:700;color:var(--purple);margin-bottom:1.1rem}
.q-body{min-height:120px}
.q-actions{display:flex;gap:.8rem;margin-top:1.3rem;justify-content:center;flex-wrap:wrap}

/* option grids */
.opt-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.kopt{background:#f4f9ff;border:4px solid var(--line);border-radius:22px;cursor:pointer;
  min-height:110px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.3rem;
  font-family:var(--ff);font-weight:700;font-size:1.5rem;color:var(--ink);transition:transform .12s,border-color .12s}
.kopt .em{font-size:3.2rem;line-height:1}
.kopt:hover:not(:disabled){transform:translateY(-4px);border-color:var(--orange)}
.kopt:disabled{cursor:default;opacity:.55}
.kopt.correct{border-color:var(--good);background:var(--good-bg);opacity:1}
.kopt.wrong{border-color:var(--bad);background:var(--bad-bg);opacity:1}
.kopt.bigt{font-size:2.4rem}
@keyframes popin{0%{transform:scale(.7)}70%{transform:scale(1.06)}100%{transform:scale(1)}}
.kopt.correct{animation:popin .35s ease}

/* speaker hero */
.speak-hero{display:flex;flex-direction:column;align-items:center;gap:.6rem;margin-bottom:1.2rem}
.spk-btn{width:92px;height:92px;border-radius:50%;border:none;background:var(--blue);color:#fff;
  font-size:2.6rem;cursor:pointer;box-shadow:0 6px 0 #1b7ec4;transition:transform .1s}
.spk-btn:active{transform:translateY(5px);box-shadow:0 1px 0 #1b7ec4}
.spk-btn.pulse{animation:pulse 1.2s ease infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}
.hero-word{font-size:2rem;font-weight:700;color:var(--ink)}
.hero-em{font-size:4.4rem;line-height:1}

/* mic */
.mic-btn{width:92px;height:92px;border-radius:50%;border:none;background:var(--pink);color:#fff;font-size:2.4rem;
  cursor:pointer;box-shadow:0 6px 0 #d94f84;transition:transform .1s}
.mic-btn:active{transform:translateY(5px);box-shadow:0 1px 0 #d94f84}
.mic-btn.rec{background:var(--bad);animation:pulse .8s ease infinite;box-shadow:0 6px 0 #c43a3a}
.mic-hint{color:var(--muted);font-weight:600}

/* tap-match (drag-style) */
.match-zone{display:flex;flex-direction:column;gap:1.1rem}
.mz-pics{display:grid;grid-template-columns:repeat(3,1fr);gap:.9rem}
.mz-pic{background:#f4f9ff;border:4px dashed var(--line);border-radius:22px;min-height:120px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.35rem;cursor:pointer;padding:.6rem}
.mz-pic .em{font-size:3rem}
.mz-pic .placed{font-weight:700;font-size:1.15rem;color:var(--ink)}
.mz-pic.full{border-style:solid;border-color:var(--good);background:var(--good-bg);cursor:default}
.mz-pic.flash{animation:shake .35s;border-color:var(--bad)}
.mz-chips{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.mchip{background:#fff;border:3px solid var(--purple);color:var(--purple);border-radius:16px;
  padding:.7rem 1.2rem;font-weight:700;font-size:1.2rem;cursor:pointer;transition:transform .12s}
.mchip:hover{transform:translateY(-4px)}
.mchip.sel{background:var(--purple);color:#fff;transform:translateY(-8px) scale(1.08);box-shadow:0 8px 18px rgba(155,109,255,.4)}
.mchip.used{visibility:hidden}

/* build sentence */
.bu-slots{display:flex;gap:.6rem;justify-content:center;flex-wrap:wrap;min-height:64px;
  background:#f4f9ff;border:3px dashed var(--line);border-radius:20px;padding:.8rem;margin-bottom:1rem}
.bu-slot{min-width:74px;height:48px;border-radius:12px;border:3px dashed var(--line);background:#fff;
  display:grid;place-items:center;font-weight:700;font-size:1.1rem;color:var(--ink);cursor:pointer}
.bu-slot.filled{border-style:solid;border-color:var(--purple);color:var(--purple)}
.bu-bank{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}
.bu-hint{text-align:center;font-size:2.8rem;margin-bottom:.4rem}

/* feedback */
.feedback{margin-top:1.2rem;border-radius:22px;padding:1.2rem 1.3rem;border:3px solid var(--line);text-align:center}
.feedback.good{background:var(--good-bg);border-color:var(--good)}
.feedback.bad{background:var(--bad-bg);border-color:var(--bad)}
.fb-mascot{font-size:2.6rem;line-height:1}
.fb-head{font-size:1.4rem;font-weight:700;margin:.3rem 0}
.feedback.good .fb-head{color:var(--good)} .feedback.bad .fb-head{color:var(--bad)}
.fb-sub{color:var(--muted);font-weight:600;margin-bottom:.8rem}

/* game */
.game-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:.6rem;flex-wrap:wrap}
.game-hud{font-weight:700;font-size:1.3rem;color:var(--orange)}
.game-stage{position:relative;background:#123;border-radius:22px;overflow:hidden;max-width:1000px;margin:0 auto;border:4px solid var(--line)}
#gameCv{display:block;width:100%;height:auto;touch-action:none;cursor:pointer}
.g-overlay{position:absolute;inset:0;background:rgba(20,40,80,.92);display:none;align-items:center;justify-content:center;text-align:center;padding:1rem}
.g-overlay.on{display:flex}
.g-box h2{color:#fff;font-size:clamp(1.5rem,5vw,2.3rem)}
.g-box p{color:#cfe4ff;margin:.6rem 0 1rem;font-weight:600;line-height:1.5}
#gFloatSkip{position:fixed;right:14px;bottom:14px;z-index:82}

/* results */
.res-head{display:flex;align-items:center;gap:1.4rem;margin-bottom:1.2rem;flex-wrap:wrap}
.res-stars{font-size:3.6rem;letter-spacing:.15em;animation:popin .6s ease}
.mascot-line{color:var(--muted);font-weight:600;font-size:1.05rem;margin-top:.3rem}
.res-stats{display:flex;background:#fff;border:4px solid var(--line);border-radius:22px;overflow:hidden;margin-bottom:1.1rem;flex-wrap:wrap}
.stat{flex:1;min-width:130px;padding:1.1rem .8rem;text-align:center;border-right:3px solid var(--line)}
.stat:last-child{border-right:none}
.stat .v{font-size:2rem;font-weight:700;color:var(--orange)}
.stat .l{font-size:.75rem;letter-spacing:.15em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-top:.2rem}
.card{background:#fff;border:4px solid var(--line);border-radius:22px;padding:1.3rem 1.5rem;margin-bottom:1.1rem}
.mrow{display:flex;align-items:center;gap:.8rem;padding:.6rem .2rem;border-bottom:2px solid var(--line);flex-wrap:wrap}
.mrow:last-child{border:none}
.mq{font-weight:700;font-size:1.1rem;color:var(--ink)}
.mans{font-weight:700}
.mans.you{color:var(--bad)} .mans.ok{color:var(--good)}
.mtag{background:var(--pink);color:#fff;border-radius:9px;padding:.15rem .6rem;font-size:.7rem;font-weight:700}

/* certificate */
.cert-outer{display:flex;justify-content:center;margin:1.6rem 0}
.cert{background:#fffdf5;color:#4a3b1a;width:100%;max-width:800px;border-radius:8px;box-shadow:0 18px 50px rgba(80,120,200,.25)}
.cert-border{border:4px dashed var(--orange);border-radius:6px;padding:clamp(1.4rem,4vw,2.4rem);text-align:center}
.cert-brand{font-family:var(--fs);font-weight:700;letter-spacing:.3em;font-size:1rem;color:#c07f00;margin-bottom:1.1rem}
.cert-brand span{color:#ff6fa5}
.cert h3{font-size:clamp(1.6rem,5vw,2.3rem);color:#4a3b1a;margin-bottom:1.1rem}
.cert-p{color:#8a7a5c;font-weight:600}
.cert-name{font-family:var(--fs);font-size:clamp(1.8rem,6vw,2.7rem);font-weight:700;color:#c07f00;
  margin:.5rem 0 1rem;border-bottom:3px solid #e8c880;display:inline-block;padding:0 2rem .3rem}
.cert-lesson{font-weight:700;font-size:1.2rem;color:#4a3b1a;margin:.3rem 0 .8rem}
.cert-stars{font-size:2rem;margin-bottom:1.4rem;color:#e8a800}
.cert-foot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.sig{font-family:var(--fs);font-size:1.9rem;color:#4a3b1a}
.sig-line{width:150px;border-top:2px solid #b09a60;margin-top:5px}
.sig-role{font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:#a89468;margin-top:4px}
#printOnly{display:none}
@media print{body>*{display:none!important}#printOnly{display:flex!important;justify-content:center}
  #printOnly .cert{box-shadow:none}}

#toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,90px);background:#fff;border:3px solid var(--orange);
  color:var(--ink);padding:.9rem 1.4rem;border-radius:16px;z-index:90;opacity:0;transition:.3s;font-weight:700;pointer-events:none;box-shadow:0 10px 26px rgba(0,0,0,.15)}
#toast.on{opacity:1;transform:translate(-50%,0)}
#waFloat{position:fixed;left:14px;bottom:14px;z-index:70;width:50px;height:50px;border-radius:50%;background:#25d366;
  color:#fff;display:grid;place-items:center;text-decoration:none;font-size:1.4rem;box-shadow:0 8px 20px rgba(0,0,0,.2)}
@media(max-width:640px){.grade-pick{gap:.5rem}.opt-grid{gap:.7rem}.kopt .em{font-size:2.5rem}.mz-pics{gap:.6rem}}