:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*{box-sizing:border-box;margin:0;padding:0}body{color:#1a1a2e;background:#f0f2f5;font-family:Segoe UI,system-ui,sans-serif}.page{justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.card{background:#fff;border-radius:12px;width:100%;max-width:640px;padding:36px;box-shadow:0 4px 24px #00000014}.card.center{text-align:center}h1{color:#1a1a2e;margin-bottom:8px;font-size:1.8rem;font-weight:700}.subtitle{color:#666;margin-bottom:28px;font-size:.95rem}.progress{color:#888;margin-bottom:8px;font-size:.85rem}.progress-bar{background:#e8e8e8;border-radius:3px;height:6px;margin-bottom:28px;overflow:hidden}.progress-fill{background:#7b2ff7;border-radius:3px;height:100%;transition:width .3s}.question{margin-bottom:24px;font-size:1.1rem;font-weight:500;line-height:1.6}.options{flex-direction:column;gap:10px;margin-bottom:24px;display:flex}.option{cursor:pointer;border:2px solid #e8e8e8;border-radius:8px;align-items:center;gap:12px;padding:14px 16px;font-size:.95rem;transition:border-color .15s,background .15s;display:flex}.option:hover,.option.selected{background:#faf5ff;border-color:#7b2ff7}.option input[type=radio]{accent-color:#7b2ff7;flex-shrink:0;width:16px;height:16px}.btn{color:#fff;cursor:pointer;background:#7b2ff7;border:none;border-radius:8px;padding:12px 28px;font-size:1rem;font-weight:600;transition:background .15s,opacity .15s;display:inline-block}.btn:hover:not(:disabled){background:#6320d4}.btn:disabled{opacity:.4;cursor:not-allowed}.start-form{text-align:left;flex-direction:column;gap:20px;margin:24px 0;display:flex}.form-group label{color:#555;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.form-group select{color:#1a1a2e;cursor:pointer;appearance:auto;background:#fff;border:2px solid #e8e8e8;border-radius:8px;width:100%;padding:10px 14px;font-size:.95rem}.form-group select:focus{border-color:#7b2ff7;outline:none}.count-options{gap:8px;display:flex}.count-btn{color:#555;cursor:pointer;background:#fff;border:2px solid #e8e8e8;border-radius:8px;flex:1;padding:10px;font-size:.95rem;font-weight:600;transition:border-color .15s,background .15s,color .15s}.count-btn:hover{color:#7b2ff7;border-color:#7b2ff7}.count-btn.active{color:#fff;background:#7b2ff7;border-color:#7b2ff7}.score{color:#7b2ff7;margin:16px 0 8px;font-size:3rem;font-weight:700}.result-actions{justify-content:center;gap:12px;display:flex}.btn-secondary{color:#7b2ff7;background:#fff;border:2px solid #7b2ff7}.btn-secondary:hover:not(:disabled){background:#faf5ff}.review-page{width:100%;max-width:720px;margin:0 auto;padding:24px}.review-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.review-footer{text-align:center;margin-top:24px}.review-card{background:#fff;border-left:4px solid #e8e8e8;border-radius:12px;margin-bottom:16px;padding:24px;box-shadow:0 2px 12px #0000000f}.review-card.correct{border-left-color:#22c55e}.review-card.incorrect{border-left-color:#ef4444}.review-question-header{align-items:center;gap:10px;margin-bottom:10px;display:flex}.review-number{color:#888;text-transform:uppercase;letter-spacing:.05em;font-size:.8rem;font-weight:700}.badge{border-radius:99px;padding:2px 10px;font-size:.75rem;font-weight:600}.badge-correct{color:#16a34a;background:#dcfce7}.badge-incorrect{color:#dc2626;background:#fee2e2}.review-question{margin-bottom:16px;font-size:1rem;font-weight:500;line-height:1.6}.review-options{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.review-option{color:#555;border:2px solid #e8e8e8;border-radius:8px;align-items:center;gap:10px;padding:10px 14px;font-size:.9rem;display:flex}.review-option.review-correct{color:#15803d;background:#f0fdf4;border-color:#22c55e;font-weight:500}.review-option.review-wrong{color:#b91c1c;background:#fef2f2;border-color:#ef4444}.review-icon{flex-shrink:0;width:16px;font-weight:700}.explanation{color:#444;background:#f8f9fa;border-radius:8px;padding:14px 16px;font-size:.9rem;line-height:1.6}.explanation-label{text-transform:uppercase;letter-spacing:.05em;color:#888;margin-bottom:6px;font-size:.75rem;font-weight:700;display:block}