:root{--bg:#07111f;--card:#111c2e;--card2:#17243a;--line:rgba(255,255,255,.12);--ink:#f8fbff;--muted:#9fb0c9;--blue:#38bdf8;--orange:#fb923c;--green:#22c55e;--red:#ef4444}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,rgba(56,189,248,.18),transparent 32%),linear-gradient(180deg,#06101f,#0b1220);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px clamp(14px,4vw,38px);background:rgba(7,17,31,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.topbar h1{font-size:clamp(1.05rem,3.8vw,1.7rem);margin:0}.eyebrow{margin:0 0 3px;color:var(--blue);text-transform:uppercase;letter-spacing:.16em;font-size:.72rem}.back,.print{color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:9px 12px;background:rgba(255,255,255,.06);font-weight:700;white-space:nowrap}.layout{width:min(1120px,100%);margin:0 auto;padding:18px clamp(12px,3vw,28px) 42px}.card{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 60px rgba(0,0,0,.28);padding:clamp(16px,3vw,24px);margin-bottom:16px}.hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center}.hero h2{font-size:clamp(1.55rem,5vw,3rem);margin:.25em 0}.hero p{color:var(--muted);font-size:1.05rem;line-height:1.55}.pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 10px;background:rgba(251,146,60,.16);color:#fed7aa;font-weight:800;font-size:.78rem}.pill.blue{background:rgba(56,189,248,.15);color:#bae6fd}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stats div{min-width:92px;text-align:center;background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:18px;padding:12px}.stats strong{display:block;font-size:1.8rem;color:var(--blue)}.stats span{font-size:.75rem;color:var(--muted);text-transform:uppercase}.controls{display:grid;grid-template-columns:1fr 1fr auto auto;gap:12px;align-items:end}.controls label{display:grid;gap:6px;color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}.controls select,.controls button{min-height:45px;border-radius:14px;border:1px solid var(--line);background:#0f1a2b;color:var(--ink);padding:0 12px;font:inherit}.controls button,.next{background:linear-gradient(135deg,var(--orange),#ffd166);color:#111827;border:0;font-weight:900;cursor:pointer}.controls button.secondary{background:rgba(255,255,255,.08);color:var(--ink);border:1px solid var(--line)}.quiz-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.muted{color:var(--muted)}#question-text{font-size:clamp(1.28rem,4.2vw,2.15rem);line-height:1.18;margin:18px 0}.answers{display:grid;gap:10px}.answer{width:100%;text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.055);color:var(--ink);border-radius:18px;padding:15px 16px;font-size:1rem;line-height:1.35;cursor:pointer}.answer:hover{border-color:rgba(56,189,248,.55);background:rgba(56,189,248,.10)}.answer.correct{border-color:rgba(34,197,94,.8);background:rgba(34,197,94,.18)}.answer.wrong{border-color:rgba(239,68,68,.85);background:rgba(239,68,68,.15)}.feedback{margin-top:14px;border-left:4px solid var(--blue);background:rgba(56,189,248,.08);border-radius:14px;padding:12px 14px;line-height:1.5}.feedback.good{border-color:var(--green);background:rgba(34,197,94,.10)}.feedback.bad{border-color:var(--red);background:rgba(239,68,68,.10)}.hidden{display:none!important}.next{margin-top:14px;border-radius:16px;min-height:48px;padding:0 18px;font:inherit}.modules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.module-card h3{margin:.2em 0}.module-card p{color:var(--muted);line-height:1.45}.module-card ul{margin:10px 0 0;padding-left:18px;color:#dbeafe}.module-card li{margin:4px 0}@media(max-width:760px){.topbar{align-items:flex-start}.back,.print{font-size:.82rem;padding:8px}.hero,.controls{grid-template-columns:1fr}.stats{grid-template-columns:repeat(3,1fr)}.stats div{min-width:0;padding:9px 5px}.stats strong{font-size:1.3rem}.modules{grid-template-columns:1fr}.card{border-radius:18px}.answer{padding:14px;font-size:.96rem}}@media(max-width:420px){.topbar{gap:7px}.print{display:none}.layout{padding-left:10px;padding-right:10px}.stats span{font-size:.62rem}}