.final-challenge-overlay{position:fixed;inset:0;z-index:150;display:none;place-items:center;overflow:auto;padding:24px;background:linear-gradient(135deg,#073d2b 0 36%,#f6f7f2 36%)}.final-challenge-overlay.open{display:grid}.final-challenge-card{display:grid;grid-template-columns:.72fr 1.28fr;width:min(1050px,100%);overflow:hidden;border-radius:30px;background:#fff;box-shadow:0 35px 100px rgba(0,0,0,.3)}.final-challenge-art{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:36px;background:radial-gradient(circle at 50% 35%,rgba(255,209,79,.22),transparent 45%),#083d2b;color:#fff;text-align:center}.final-challenge-art img{width:min(260px,90%);height:260px;object-fit:contain;filter:drop-shadow(0 22px 28px rgba(0,0,0,.25))}.final-challenge-art span{color:#ffd14f;font-size:.72rem;font-weight:950;letter-spacing:.1em;text-transform:uppercase}.final-challenge-art h2{margin:10px 0 6px;font:700 2rem Georgia,serif}.final-challenge-art p{margin:0;color:#d4e5dd;line-height:1.5}.final-challenge-card>section{padding:clamp(28px,4vw,48px)}.final-kicker{margin:0;color:#ee5f55;font-size:.7rem;font-weight:950;letter-spacing:.1em;text-transform:uppercase}.final-challenge-card section h2{margin:8px 0;color:#083d2b;font:700 clamp(2rem,4vw,3rem) Georgia,serif}.final-intro{color:#607169;line-height:1.55}.final-source{display:inline-block;margin:7px 0 15px;padding:9px 12px;border-radius:10px;background:#edf7f0;color:#1d754e;font-size:.78rem;font-weight:900;text-decoration:none}.final-choices{display:grid;gap:9px}.final-choices button{display:grid;grid-template-columns:33px 1fr;align-items:center;gap:10px;padding:12px;border:1px solid #d8e3dd;border-radius:13px;background:#fff;color:#204b3b;text-align:left;cursor:pointer}.final-choices button b{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;background:#edf3ef}.final-choices button.selected{border-color:#1d754e;background:#f0f8f3}.final-choices button.correct{border-color:#69a61d;background:#eff9e7}.final-choices button.wrong{border-color:#ee5f55;background:#fff0ee}.final-feedback{display:none;margin:13px 0 0;padding:12px 14px;border-radius:12px;line-height:1.45}.final-feedback.show{display:block}.final-feedback.success{background:#edf8e8;color:#315f16}.final-feedback.error{background:#fff0ee;color:#78302b}.final-feedback strong{display:block}.final-validate{display:block;margin:16px 0 0 auto;border:0;border-radius:13px;padding:13px 17px;background:#ffd14f;color:#083d2b;font-weight:950;cursor:pointer}.final-validate:disabled{opacity:.45;cursor:not-allowed}@media(max-width:760px){.final-challenge-overlay{display:none;padding:12px;background:#f6f7f2}.final-challenge-overlay.open{display:block}.final-challenge-card{grid-template-columns:1fr}.final-challenge-art{padding:18px}.final-challenge-art img{width:130px;height:120px}.final-challenge-art p{display:none}.final-challenge-card>section{padding:24px 18px}}