:root{
  --bg:#f7f8fc;--card:#fff;--text:#22263a;--muted:#687087;--line:#e6e8f0;
  --brand:#5b63f6;--brand2:#7c4dff;--ok:#1f9d62;--bad:#d94a5a;--warn:#d58a00;
  --shadow:0 12px 30px rgba(26,31,56,.10);--radius:22px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.app{max-width:980px;margin:auto;padding:18px 16px 80px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.brand{font-weight:800;font-size:1.08rem}.pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;box-shadow:0 3px 10px rgba(0,0,0,.03)}
.screen{display:none}.screen.active{display:block}
.hero{background:linear-gradient(145deg,#fff,#f1f2ff);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow);margin-bottom:18px}
.hero h1{font-size:clamp(1.8rem,5vw,3rem);margin:0 0 8px}.hero p{color:var(--muted);font-size:1.05rem;line-height:1.55;margin:0}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.subject{border:1px solid var(--line);background:var(--card);border-radius:20px;padding:20px;text-align:left;min-height:118px;box-shadow:0 7px 18px rgba(26,31,56,.06)}
.subject .emoji{font-size:2rem;display:block;margin-bottom:9px}.subject b{font-size:1.05rem}.subject small{display:block;color:var(--muted);margin-top:5px}
.subject.enabled:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.subject.disabled{opacity:.56;cursor:not-allowed}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 8px 20px rgba(26,31,56,.06);margin-bottom:14px}
.card h2,.card h3{margin-top:0}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.btn{border:0;border-radius:14px;padding:12px 16px;font-weight:750;background:#eceeff;color:#30356f}
.btn.primary{background:var(--brand);color:#fff}.btn.secondary{background:#fff;border:1px solid var(--line)}.btn:disabled{opacity:.5;cursor:not-allowed}
.mode{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mode .card{margin:0}
textarea{width:100%;min-height:110px;border:1px solid var(--line);border-radius:14px;padding:14px;resize:vertical;background:#fbfbfe}
select{border:1px solid var(--line);border-radius:12px;padding:10px;background:#fff}
.match{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.tag{font-size:.88rem;background:#eef8f3;color:#176845;border-radius:999px;padding:7px 10px}
.quizhead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}
.progress{height:12px;border-radius:999px;background:#e8eaf4;overflow:hidden}.progress>div{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:.25s}
.kicker{color:var(--muted);font-weight:700;font-size:.9rem}.qtext{font-size:clamp(1.25rem,3vw,1.65rem);line-height:1.4;margin:12px 0 18px}
.options{display:grid;gap:10px}.option{border:2px solid var(--line);background:#fff;border-radius:16px;padding:14px;text-align:left;font-weight:650}
.option:hover:not(:disabled){border-color:#b9bcff}.option.correct{border-color:#86d7b3;background:#f0fbf6}.option.wrong{border-color:#f2a8b1;background:#fff4f5}
.feedback{display:none;margin-top:16px;padding:16px;border-radius:16px;line-height:1.5}.feedback.show{display:block}.feedback.ok{background:#effbf5;border:1px solid #b8e8d1}.feedback.bad{background:#fff4f5;border:1px solid #f2bdc4}
.hint{display:none;margin-top:12px;background:#fff8e8;border:1px solid #f1d89d;border-radius:14px;padding:13px}.hint.show{display:block}
.statgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat{background:#f7f8fc;border-radius:16px;padding:14px;text-align:center}.stat b{display:block;font-size:1.3rem}.stat small{color:var(--muted)}
.album{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.sticker{aspect-ratio:1;border-radius:18px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:2rem;background:#fff}.sticker.locked{filter:grayscale(1);opacity:.25}
.resultRow{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}
.notice{background:#fff8e8;border:1px solid #f1d89d;border-radius:14px;padding:12px;margin-top:12px}
.small{font-size:.9rem;color:var(--muted)}
#loadError{display:none}
@media (max-width:700px){.grid,.mode{grid-template-columns:1fr}.hero{padding:22px}.app{padding:12px 12px 70px}.statgrid{grid-template-columns:1fr 1fr}.album{grid-template-columns:repeat(4,1fr)}}

input{width:100%;padding:14px;border:2px solid var(--line);border-radius:14px;margin:10px 0}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #7c4dff;outline-offset:3px}.qtext{white-space:pre-wrap}.statement{width:100%;height:auto}.sticker{flex-direction:column}.sticker small{font-size:.65rem}.small{line-height:1.6}a.btn{text-decoration:none} .actions{margin-top:16px}#status{white-space:pre-wrap}