:root{--bg:#f5f3ee;--surface:#fff;--surface-2:#efede7;--text:#242424;--muted:#686868;--border:#dedbd4;--correct:#2f6b48;--correct-bg:#e8f2ec;--incorrect:#8a3a3a;--incorrect-bg:#f6e9e9;--focus:#4b4b4b;--shadow:0 8px 30px rgba(0,0,0,.05);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light}
:root[data-theme="dark"]{--bg:#1d1d1d;--surface:#272727;--surface-2:#30302f;--text:#f1efe9;--muted:#b7b4ad;--border:#44413d;--correct:#8ec9a6;--correct-bg:#24372c;--incorrect:#e3a0a0;--incorrect-bg:#432929;--focus:#f1efe9;color-scheme:dark}
*{box-sizing:border-box}html{background:var(--bg);color:var(--text)}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);line-height:1.55}button,input{font:inherit}button{color:inherit}.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem max(1rem,calc((100vw - 920px)/2));background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.site-header nav{display:flex;gap:.35rem;align-items:center}.site-header button,.text-button,.back-button{border:0;background:transparent;min-height:44px;padding:.55rem .75rem;border-radius:.65rem;cursor:pointer}.site-header button:hover,.text-button:hover,.back-button:hover{background:var(--surface-2)}.brand{font-weight:750;letter-spacing:-.02em}main{width:min(760px,calc(100% - 2rem));margin:0 auto;padding:3.5rem 0 5rem}.hero{padding:1rem 0 2rem}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;color:var(--muted);font-weight:700;margin:0 0 .5rem}.hero h1,.panel h1,.question-card h1{font-size:clamp(1.7rem,4vw,2.35rem);line-height:1.16;letter-spacing:-.035em;margin:.2rem 0 1rem}.hero p:not(.eyebrow){color:var(--muted);font-size:1.05rem}.blocks{display:grid;gap:.8rem}.block-card{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;gap:1rem;border:1px solid var(--border);background:var(--surface);padding:1.15rem 1.25rem;border-radius:1rem;cursor:pointer;box-shadow:var(--shadow);min-height:84px}.block-card:hover{border-color:var(--muted)}.block-card strong,.block-card small{display:block}.block-card small{color:var(--muted);margin-top:.2rem}.card-meta{color:var(--muted);font-size:.9rem;white-space:nowrap}.block-card.all{margin-top:.4rem;background:var(--surface-2)}.progress-summary{margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:1rem;color:var(--muted)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:1.2rem;padding:clamp(1.2rem,4vw,2rem);box-shadow:var(--shadow)}fieldset{border:0;padding:0;margin:1.7rem 0}legend{font-weight:700;margin-bottom:.6rem}fieldset label{display:flex;align-items:center;gap:.7rem;padding:.75rem .2rem;cursor:pointer}input[type="radio"]{width:1.15rem;height:1.15rem;accent-color:var(--text)}.primary{border:1px solid var(--text);background:var(--text);color:var(--bg);border-radius:.75rem;padding:.75rem 1.15rem;min-height:46px;font-weight:700;cursor:pointer}.primary:disabled{opacity:.4;cursor:not-allowed}.quiz-head{display:grid;gap:.55rem;margin-bottom:1rem;color:var(--muted)}progress{width:100%;height:5px;accent-color:var(--text)}.question-card{background:var(--surface);border:1px solid var(--border);border-radius:1.2rem;padding:clamp(1.2rem,4vw,2rem);box-shadow:var(--shadow)}.answers{display:grid;gap:.7rem;margin-top:1.6rem}.answer-option{display:grid;grid-template-columns:2rem 1fr auto;align-items:center;gap:.7rem;text-align:left;width:100%;min-height:58px;padding:.8rem 1rem;border:1px solid var(--border);background:var(--surface);border-radius:.85rem;cursor:pointer}.answer-option:hover:not(:disabled),.answer-option[aria-pressed="true"]{background:var(--surface-2);border-color:var(--muted)}.answer-option.correct{border-color:var(--correct);background:var(--correct-bg)}.answer-option.incorrect{border-color:var(--incorrect);background:var(--incorrect-bg)}.choice-marker{display:grid;place-items:center;width:1.8rem;height:1.8rem;border:1px solid var(--border);border-radius:50%;font-size:.85rem;font-weight:700}.feedback{margin-top:1rem;padding:1rem;border-left:3px solid var(--border);background:var(--surface-2);border-radius:.4rem}.feedback p{margin:.35rem 0 0}.quiz-actions,.button-row{display:flex;justify-content:flex-end;gap:.7rem;margin-top:1.5rem}.button-row button:not(.primary){border:1px solid var(--border);background:var(--surface);border-radius:.75rem;padding:.75rem 1.15rem;cursor:pointer}.score-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.8rem;margin:1.5rem 0}.score-grid>div{background:var(--surface-2);border-radius:.8rem;padding:1rem}.score-grid span,.score-grid strong{display:block}.score-grid span{font-size:.86rem;color:var(--muted)}.score-grid strong{font-size:1.4rem;margin-top:.2rem}.counts{display:flex;gap:1rem;flex-wrap:wrap;padding:1rem 0;border-bottom:1px solid var(--border)}.results section{margin-top:1.8rem}.breakdown{display:grid;gap:.5rem}.breakdown>div{display:flex;justify-content:space-between;gap:1rem;padding:.7rem 0;border-bottom:1px solid var(--border)}.review-list{display:grid;gap:1rem;margin-top:1.3rem}.review-item{border:1px solid var(--border);border-radius:1rem;padding:1rem 1.15rem}.review-item h2{font-size:1.05rem}.correct-review{border-left:4px solid var(--correct)}.incorrect-review{border-left:4px solid var(--incorrect)}.blank-review{border-left:4px solid var(--muted)}.empty-state{text-align:center;padding:2.5rem 1rem;color:var(--muted)}.error-message{border:1px solid var(--incorrect);background:var(--incorrect-bg);padding:1rem;border-radius:.8rem}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media(max-width:640px){.site-header{align-items:flex-start;padding:.65rem 1rem;flex-wrap:wrap}.site-header nav{width:100%;overflow-x:auto}.site-header nav button{white-space:nowrap;padding:.45rem .55rem}main{padding-top:2rem}.block-card{align-items:flex-start;flex-direction:column}.card-meta{white-space:normal}.progress-summary{align-items:flex-start;flex-direction:column}.quiz-actions,.button-row{flex-direction:column}.quiz-actions button,.button-row button{width:100%}}