:root{--p:#6366f1;--pd:#4f46e5;--bg:#0f172a;--s:#1e293b;--t:#f8fafc;--m:#94a3b8;--g:#fbbf24;--b:rgba(255,255,255,.12);font-family:'Segoe UI',system-ui,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:radial-gradient(circle at top,rgba(99,102,241,.25),transparent 38%),var(--bg);color:var(--t);min-height:100svh;display:flex;justify-content:center;font-family:inherit}.app-container{width:100%;max-width:520px;min-height:100svh;background:var(--s);box-shadow:0 0 50px rgba(0,0,0,.55);overflow:hidden;position:relative}.screen{display:none;min-height:100svh;flex-direction:column}.screen.active{display:flex}.menu{padding:16px 20px;overflow:auto;text-align:center}.back{align-self:flex-start;color:var(--m);background:rgba(255,255,255,.06);padding:8px 11px;border-radius:999px;text-decoration:none;font-size:.82rem}.logo{font-size:3rem;margin:8px 0}h1{font-size:clamp(1.8rem,7vw,2.4rem)}.subtitle{color:var(--m);font-size:.92rem;line-height:1.4;margin:8px 0 14px}.label{text-align:left;color:var(--m);font-weight:900;font-size:.75rem;letter-spacing:.7px;margin:10px 0 8px}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.levels{grid-template-columns:repeat(4,1fr)}.opt{background:rgba(255,255,255,.055);border:2px solid transparent;border-radius:15px;color:var(--m);min-height:58px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px}.opt.selected{border-color:var(--p);background:rgba(99,102,241,.18);color:white}.btn{border:0;border-radius:16px;padding:15px;width:100%;display:block;text-align:center;font-weight:900;text-decoration:none;margin-top:10px}.primary{background:linear-gradient(135deg,var(--p),var(--pd));color:white}.secondary{background:rgba(255,255,255,.1);color:white;border:1px solid var(--b)}.hidden{display:none}.error{background:rgba(239,68,68,.14);border:1px solid rgba(239,68,68,.35);color:#fecaca;border-radius:14px;padding:12px;margin:10px 0}header{padding:16px 20px;background:rgba(0,0,0,.22)}.hud{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.badge{background:var(--p);padding:7px 12px;border-radius:10px;font-weight:900}.track{height:7px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden}.track div{height:100%;width:0;background:var(--g)}.qwrap{flex:1;padding:18px;display:flex;align-items:center}.qcard{width:100%;background:white;color:var(--bg);border-radius:24px;padding:22px 18px;box-shadow:0 16px 50px rgba(0,0,0,.42)}.meta{display:flex;justify-content:space-between;margin-bottom:14px}.meta span{background:#e2e8f0;color:#475569;border-radius:999px;padding:6px 10px;font-size:.68rem;font-weight:900}.qcard h2{text-align:center;font-size:clamp(1.12rem,4.8vw,1.45rem);line-height:1.35;margin-bottom:18px}.answers{display:grid;gap:10px}.answer{padding:14px;border-radius:15px;background:#f1f5f9;color:#0f172a;border:2px solid #e2e8f0;text-align:left}.answer.correct{background:rgba(34,197,94,.16);border-color:#22c55e}.answer.wrong{background:rgba(239,68,68,.16);border-color:#ef4444}.center{align-items:center;justify-content:center;padding:24px 20px;text-align:center}.card,.modal-card{width:100%;background:rgba(255,255,255,.07);border:1px solid var(--b);border-radius:24px;padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.42)}.big{font-size:3.5rem;margin-bottom:10px}.card h2{color:var(--g);font-size:1.8rem}.box{text-align:left;background:rgba(255,255,255,.075);border:1px solid var(--b);border-radius:16px;padding:13px;margin:10px 0}.box p{color:var(--m);line-height:1.42}.results{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:16px 0}.results div{background:rgba(255,255,255,.075);border:1px solid var(--b);border-radius:16px;padding:14px}.results span{display:block;color:var(--m);font-size:.72rem;font-weight:900}.results b{font-size:1.6rem}.modal{position:absolute;inset:0;background:rgba(15,23,42,.88);display:none;align-items:center;justify-content:center;padding:20px;z-index:100}.modal.show{display:flex}.modal-card{background:var(--s)}input{width:100%;padding:13px;border-radius:13px;border:1px solid var(--b);background:rgba(255,255,255,.08);color:white;font:inherit}.avatars{display:grid;grid-template-columns:repeat(8,1fr);gap:7px}.avatar{min-height:38px;border-radius:10px;background:rgba(255,255,255,.08);border:2px solid transparent;font-size:1.25rem}.avatar.selected{border-color:var(--p);background:rgba(99,102,241,.22)}#status{min-height:20px;color:var(--g);font-size:.85rem}.profile-float.fixed{right:16px!important;bottom:16px!important;top:auto!important}@media(max-width:380px){.levels{grid-template-columns:repeat(2,1fr)}.avatars{grid-template-columns:repeat(4,1fr)}}