:root{--color-background:#0a0a0b;--color-surface:#111113;--color-surface-hover:#18181b;--color-border:#27272a;--color-text:#fafafa;--color-text-secondary:#a1a1aa;--color-text-muted:#71717a;--color-accent:#f59e0b;--color-accent-hover:#fbbf24;--color-correct:#22c55e;--color-incorrect:#ef4444;--radius:12px;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:var(--font-sans);color:var(--color-text);background:var(--color-background);-webkit-font-smoothing:antialiased;line-height:1.5}*{box-sizing:border-box}body,h1,h2,h3,p{margin:0}.page{flex-direction:column;gap:32px;max-width:40rem;min-height:100vh;margin:0 auto;padding:48px 16px;display:flex}main{flex:1}.header__title{letter-spacing:-.02em;font-size:2rem;font-weight:800}.header__subtitle{color:var(--color-text-secondary);margin-top:4px}.footer{color:var(--color-text-muted);justify-content:center;gap:8px;font-size:.875rem;display:flex}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:calc(var(--radius) * 1.5);flex-direction:column;gap:20px;padding:32px;display:flex}.card--status{text-align:center;align-items:center;padding-block:64px}.card__title{font-size:1.5rem;font-weight:700}.card__text{color:var(--color-text-secondary)}@media (width<=480px){.card{padding:24px 20px}}.link{color:var(--color-accent);text-decoration:none}.link:hover{text-decoration:underline}.button,.select,.answer{font:inherit;color:inherit;border:1px solid var(--color-border);border-radius:var(--radius);transition:background-color .15s,border-color .15s}.button{cursor:pointer;background:0 0;padding:10px 20px;font-weight:600}.button:hover{background:var(--color-surface-hover)}.button--primary{color:var(--color-background);background:var(--color-accent);border-color:var(--color-accent)}.button--primary:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}.actions{flex-wrap:wrap;gap:12px;display:flex}.fields{grid-template-columns:repeat(auto-fit,minmax(10rem,1fr));gap:16px;display:grid}.field{flex-direction:column;gap:6px;display:flex}.field__label{color:var(--color-text-secondary);font-size:.875rem;font-weight:500}.select{background:var(--color-background);padding:10px 12px}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}h2[tabindex="-1"]:focus{outline:none}.quiz-meta{color:var(--color-text-secondary);justify-content:space-between;font-size:.875rem;display:flex}.progress{background:var(--color-border);border-radius:999px;height:4px;margin-top:-12px;overflow:hidden}.progress__bar{background:var(--color-accent);height:100%;transition:width .3s}.question__category{color:var(--color-text-muted);text-transform:capitalize;font-size:.875rem}.question__text{margin-top:-12px;font-size:1.375rem;font-weight:700;line-height:1.35}.answers{gap:10px;margin:0;padding:0;list-style:none;display:grid}.answer{text-align:left;background:var(--color-background);cursor:pointer;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:14px 16px;display:flex}.answer:hover:not([aria-disabled=true]){background:var(--color-surface-hover);border-color:var(--color-text-muted)}.answer[aria-disabled=true]{cursor:default}.answer--correct{border-color:var(--color-correct);background:color-mix(in srgb, var(--color-correct) 12%, transparent)}.answer--incorrect{border-color:var(--color-incorrect);background:color-mix(in srgb, var(--color-incorrect) 12%, transparent)}.answer__tag{text-transform:uppercase;letter-spacing:.04em;flex-shrink:0;font-size:.75rem;font-weight:600}.answer--correct .answer__tag{color:var(--color-correct)}.answer--incorrect .answer__tag{color:var(--color-incorrect)}.question__footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;min-height:46px;display:flex}.feedback{color:var(--color-text-secondary)}.review__title{color:var(--color-text-secondary);margin-top:12px;font-size:1rem}.review{gap:12px;margin:0;padding:0;list-style:none;display:grid}.review__item{border:1px solid var(--color-border);border-radius:var(--radius);gap:4px;padding:16px;display:grid}.review__question{font-weight:500}.review__answer{color:var(--color-text-secondary);font-size:.875rem}.review__answer--correct{color:var(--color-correct)}.review__answer--incorrect{color:var(--color-incorrect)}.spinner{border:3px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.is-invisible{visibility:hidden}.visually-hidden{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}.spinner{animation:none}}