:root{color-scheme:dark;--bg:#1a1a1a;--card:#252525;--border:#414141;--text:#eee;--muted:#b3b3b3;--accent:#ef8a62;--button:#e77d53;--green:#8adbad;--red:#ffaaaa}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.7}a{color:var(--accent);text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #ffc48d;outline-offset:4px}[hidden]{display:none!important}.skip{position:absolute;left:12px;top:-70px;background:var(--card);padding:10px;z-index:5}.skip:focus{top:8px}header{max-width:1000px;margin:auto;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #333;font-size:13px}header a{text-decoration:none}.brand{font-size:12px;letter-spacing:.16em;color:var(--muted)}main{max-width:680px;margin:0 auto;padding:32px 20px 48px}.hero{text-align:center;margin:6px 0 28px}.eyebrow{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.14em;margin:0 0 14px}h1{font-size:30px;line-height:1.45;letter-spacing:.035em;margin:0 0 14px}h1 span{display:block;font-size:25px}.lead{font-size:15px;margin:12px 0 4px}.scope,.small{font-size:13px;color:var(--muted)}.scope{margin:0}.total{display:flex;justify-content:center;align-items:baseline;gap:12px;margin-top:18px}.total strong{font-size:54px;line-height:1.15;color:var(--accent);font-weight:800;letter-spacing:-.03em}.total span{font-size:14px;color:var(--muted)}.hero .small{margin:8px 0 0}.panel{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px;margin-bottom:20px}fieldset{border:0;padding:0;margin:0 0 22px;min-width:0}legend{font-size:14px;font-weight:700;margin-bottom:10px;padding:0}legend .small{font-weight:400;margin-left:8px}.mode-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.mode-row label{display:flex;align-items:center;justify-content:center;gap:7px;min-height:48px;border:1px solid #555;border-radius:8px;cursor:pointer;font-size:14px}.mode-row label:has(input:checked){border-color:var(--accent);background:#35261f;color:#ffc5a8}input[type=radio]{accent-color:var(--accent);width:16px;height:16px;margin:0}#mode-help{margin:10px 0 0;min-height:44px}.pills{display:flex;gap:8px;flex-wrap:wrap}.pill{border:1px solid #595959;border-radius:7px;background:#222;color:#ddd;font-size:12px;padding:8px 11px;min-height:40px}.pill[aria-pressed=true]{background:#3c2b23;color:#ffbc98;border-color:var(--accent)}.pill:disabled{opacity:.35}.controls{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px}.controls select{background:#1d1d1d;color:var(--text);border:1px solid #666;padding:8px 32px 8px 12px;border-radius:6px;max-width:65%}.pool-count{font-size:13px;color:var(--accent);text-align:center;margin:20px 0 10px}.primary,.secondary{border:1px solid transparent;border-radius:8px;padding:12px 18px;min-height:48px;font-weight:700;line-height:1.5}.primary{background:var(--button);color:#1b1714}.primary:hover:not(:disabled){background:#f99569}.secondary{background:#202020;border-color:#626262;color:var(--text)}.secondary:hover:not(:disabled){background:#343434}.wide{width:100%;margin:0 0 10px}.weak{color:#ffb7a9;border-color:#865349}.settings>.small{font-size:11px;margin:4px 0 0}.notice{font-size:13px;color:#ffc69e;margin:0}.notice:empty{display:none}h2{font-size:18px;margin:0 0 12px}.search-row{display:flex;gap:8px;margin-top:8px}input[type=search]{min-width:0;flex:1;border:1px solid #666;background:#1c1c1c;border-radius:8px;padding:10px 12px;color:var(--text)}input::placeholder{color:#aaa}.search-row button{font-size:12px;padding:10px 12px}#search-count:empty{display:none}.search-hit,.mistake{border-top:1px solid var(--border);padding:14px 0}.search-hit summary,.mistake summary{cursor:pointer;font-size:14px;line-height:1.7}.search-hit .small{display:block;margin-top:5px}.search-hit p,.mistake p{font-size:13px;margin:8px 0 0}.search-hit strong,.mistake strong{color:var(--green)}.guide{font-size:13px;color:var(--muted);padding:0 4px}.guide summary{cursor:pointer;color:var(--text);padding:10px 0}.guide p{margin:10px 0}.quiz-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:26px}.text-button{color:var(--accent);background:none;border:0;padding:10px 0;font-size:13px;text-decoration:underline;text-underline-offset:4px}.progress-info{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}progress{width:100%;height:6px;display:block;border:0;border-radius:10px;margin:10px 0 24px;accent-color:var(--accent);background:#343434}progress::-webkit-progress-bar{background:#343434;border-radius:10px}progress::-webkit-progress-value{background:var(--accent);border-radius:10px}progress::-moz-progress-bar{background:var(--accent)}.badge{display:inline-block;color:#ffb899;background:#3b2b24;border:1px solid #76513e;border-radius:5px;padding:3px 9px;font-size:11px;margin-bottom:17px}.question-card h2{font-size:22px;line-height:1.9;overflow-wrap:anywhere;font-weight:600;margin:0 0 12px}.target{color:#ffab82;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:6px;font-weight:700}.choices{display:grid;gap:10px;margin-top:22px}.choice{display:flex;align-items:center;gap:12px;text-align:left;background:#1f1f1f;color:var(--text);border:1px solid #626262;border-radius:8px;padding:14px;min-height:54px;font-size:16px;line-height:1.65}.choice:hover:not(:disabled){border-color:var(--accent);background:#30251f}.choice:disabled{opacity:1}.choice-num{font-size:12px;color:var(--muted);border:1px solid #5e5e5e;border-radius:4px;min-width:26px;text-align:center}.choice.correct{border-color:var(--green);background:#20352a}.choice.wrong{border-color:var(--red);background:#3a2424}.choice:not(.correct):not(.wrong):disabled{color:#aaa}.choice-result{font-size:12px;margin-left:auto;white-space:nowrap}.feedback{margin:22px 0 18px;background:#1d2c24;border:1px solid #446550;border-radius:8px;padding:15px}.feedback.incorrect{background:#332522;border-color:#80574c}.feedback p{margin:6px 0;font-size:14px}.feedback #verdict{font-size:16px;font-weight:800;color:var(--green)}.feedback.incorrect #verdict{color:var(--red)}#correct-answer{font-weight:700;overflow-wrap:anywhere}#explanation{color:#d3d3d3}.paper-tip{font-size:14px;color:var(--muted);margin:24px 0}.two-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.good{color:var(--green);border-color:#62816c}.bad{color:var(--red);border-color:#9c7373}.result-card{text-align:center}.result-score{font-size:48px;color:var(--accent);font-weight:800;line-height:1.4;margin:20px 0 8px}.result-score small{font-size:16px;color:var(--muted);font-weight:400}.result-card>p{font-size:14px}.category-stat{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid #444;padding:8px 0;font-size:13px;text-align:left}#category-results{margin:24px 0}#mistakes{padding:0 12px}.related{border-top:1px solid #3c3c3c;margin-top:36px;padding-top:22px;display:flex;flex-wrap:wrap;gap:5px 16px;justify-content:center;font-size:13px}.related span{color:var(--muted)}footer{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;padding:24px 18px;border-top:1px solid #333;color:#aaa;font-size:11px}footer a{color:#bbb} @media(max-width:480px){header{padding:15px 18px}main{padding:26px 16px 36px}.panel{padding:20px 16px}h1{font-size:26px}h1 span{font-size:22px}.lead{font-size:13px}.question-card h2{font-size:20px}.choice{font-size:15px;padding:12px 10px;gap:9px}.choice-result{font-size:10px}.mode-row{gap:7px}.mode-row label{font-size:12px;gap:5px}.pill{padding:7px 9px;font-size:11px}.brand{font-size:10px}.result-score{font-size:42px}}@media(prefers-reduced-motion:no-preference){button,a{transition:background-color .15s,border-color .15s}}