*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#1c1f24;color:#f0f0f0;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:0 16px 60px}#app{width:100%;max-width:560px;margin-top:24px}.site-header{width:100%;display:flex;align-items:center;gap:12px;padding:14px 20px;margin:0 -16px;background:#24272c;border-bottom:1px solid #33373d}.header-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.header-icon{font-size:1.6rem;line-height:1}.header-title{font-weight:800;font-size:1rem;color:#f0f0f0}.header-spacer{flex:1}.header-btn{background:transparent;border:1px solid #3a3d42;color:#c7c9cc;border-radius:8px;padding:8px 14px;font-size:.85rem;cursor:pointer}.header-btn:hover{border-color:#4c8bf5;color:#fff}.screen{text-align:center}.hidden{display:none!important}h1{font-size:1.6rem;margin-bottom:8px}.subtitle{color:#9aa0a6;margin:0 0 24px}.info{color:#c7c9cc;line-height:1.5;margin-bottom:32px}.primary-btn{background:#4c8bf5;color:#fff;border:none;border-radius:10px;padding:14px 28px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .15s ease}.primary-btn:hover{background:#3a75db}.primary-btn:disabled{background:#444;cursor:not-allowed}.quiz-header{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:#9aa0a6;margin-bottom:8px}.section-label{font-weight:600;color:#d6d9dd}.timer-label{font-variant-numeric:tabular-nums}.progress-bar{height:6px;background:#33373d;border-radius:3px;overflow:hidden;margin-bottom:24px}#progress-fill{height:100%;background:#4c8bf5;width:0%;transition:width .25s ease}#question-card{background:#24272c;border-radius:16px;padding:24px 20px;margin-bottom:20px}#question-prompt{font-size:1.05rem;margin:0 0 18px;line-height:1.4}#question-media{margin-bottom:20px;display:flex;justify-content:center}#question-media img{max-width:100%;max-height:280px;border-radius:10px;border:3px solid #3a3d42}.color-swatch{width:120px;height:120px;border-radius:50%;border:4px solid #fff}.display-text{font-size:2rem;font-weight:800;letter-spacing:2px;background:#111;color:#fff;padding:14px 28px;border-radius:8px;display:inline-block}#choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice-btn{background:#2f333a;color:#f0f0f0;border:2px solid #3a3d42;border-radius:10px;padding:14px 10px;font-size:.95rem;cursor:pointer;transition:border-color .15s ease,background .15s ease}.choice-btn:hover:not(:disabled){border-color:#4c8bf5}.choice-btn:disabled{cursor:default}.choice-btn.correct{background:#1e5a2e;border-color:#2fa84f}.choice-btn.incorrect{background:#5a1e1e;border-color:#d64545}.choice-btn.selected{background:#2a3f5f;border-color:#4c8bf5}.mode-card{background:#24272c;border-radius:16px;padding:20px;margin-bottom:20px;text-align:center}.mode-title{font-size:1.1rem;margin:0 0 6px}.mode-desc{color:#9aa0a6;font-size:.9rem;line-height:1.5;margin:0 0 16px}.exam-variant-btn{display:block;width:100%;margin:10px 0 0;line-height:1.4}.exam-variant-meta{font-weight:400;font-size:.8rem;opacity:.85}.gate-note{background:#3a2f1e;border:1px solid #6b5423;color:#e8c87a;border-radius:10px;padding:12px 14px;font-size:.88rem;line-height:1.5;margin:0 0 8px}.timer-label.timer-warning{color:#f28b8b;font-weight:700}.primary-btn:disabled{background:#3a3d42;color:#7a7f85;cursor:not-allowed}.choice-btn.reveal-correct{border-color:#2fa84f}#choices.image-choices{grid-template-columns:1fr 1fr}.choice-btn-image{position:relative;display:flex;align-items:center;justify-content:center;padding:10px;min-height:100px}.choice-btn-image img{max-width:100%;max-height:90px;object-fit:contain}.choice-btn-image .choice-letter{position:absolute;top:4px;left:8px;font-weight:700;color:#9aa0a6;font-size:.8rem}#feedback{margin-top:16px;font-weight:600;padding:10px;border-radius:8px}#feedback.correct{background:#1e5a2e33;color:#6fd48a}#feedback.incorrect{background:#5a1e1e33;color:#f28b8b}#result-summary{font-size:1.2rem;margin-bottom:4px}#result-summary .score-big{font-size:3rem;font-weight:800;display:block;margin-bottom:8px}#result-summary .pass{color:#6fd48a}#result-summary .fail{color:#f28b8b}#result-breakdown{text-align:left;background:#24272c;border-radius:12px;padding:16px 20px;margin:24px 0}.breakdown-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid #33373d;font-size:.9rem}.breakdown-row:last-child{border-bottom:none}.breakdown-row .tag-correct{color:#6fd48a}.breakdown-row .tag-incorrect{color:#f28b8b}