.intro{max-width:660px;margin:auto;padding:30px 22px;text-align:center}.big-icon{font-size:58px}.intro h1,.quiz h1{letter-spacing:-.04em}.intro h1{font-size:clamp(34px,9vw,50px);margin:8px 0}.intro p{color:var(--muted);line-height:1.7}.rules{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:18px 0}.rules span{padding:8px 10px;border-radius:999px;background:var(--surface2);font-size:11px;font-weight:800}.status{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.quiz{margin-top:15px;padding:24px 18px;text-align:center}.timer-wrap{display:inline-flex;align-items:end;gap:4px;margin-bottom:15px}.timer{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;background:var(--primarySoft);color:var(--primary);font-size:28px;font-weight:900}.timer.danger{background:var(--redSoft);color:var(--red)}.timer-wrap span{color:var(--muted);font-size:10px;margin-bottom:8px}.quiz h1{max-width:760px;margin:9px auto 22px;font-size:clamp(27px,7vw,40px);line-height:1.2}.tf-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tf{min-height:120px;border:0;border-radius:23px;font-size:42px;font-weight:900;cursor:pointer}.tf strong{display:block;font-size:13px}.tf.true{background:var(--greenSoft);color:var(--green)}.tf.false{background:var(--redSoft);color:var(--red)}.tf:disabled{opacity:.5}.feedback{margin-top:18px;padding:16px;border-radius:18px;background:var(--surface2);text-align:left}.feedback.correct{background:var(--greenSoft)}.feedback.wrong{background:var(--redSoft)}.feedback p{color:var(--muted);line-height:1.6}.feedback span{display:block;margin-bottom:13px;color:var(--primary);font-size:12px;font-weight:800}