:root{color-scheme:dark;--bg:#10131d;--panel:#191e2c;--line:#30384b;--text:#eef1fa;--muted:#a5afc4;--accent:#a3a0ff;--green:#7fe1b3;--red:#ff9da8}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 75% 0,#24234155,transparent 50%),var(--bg);color:var(--text);font:16px/1.7 system-ui,-apple-system,"Segoe UI",sans-serif}header{max-width:1140px;margin:auto;padding:25px 28px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}a{color:inherit;text-decoration:none}.brand{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:700;line-height:1.3}.brand b{color:var(--accent)}small{display:block;font-size:11px;color:var(--muted);font-weight:400;margin-top:4px}.logo{background:#a3a0ff20;color:var(--accent);border:1px solid #a3a0ff55;border-radius:12px;padding:7px 15px;font-size:28px}nav{display:flex;gap:22px;font-size:14px}nav a[aria-current]{color:var(--accent)}main{max-width:1000px;padding:46px 28px;margin:auto;min-height:65vh}.eyebrow{font-size:12px;letter-spacing:.15em;color:var(--accent);font-weight:700}h1{font-size:clamp(28px,4vw,42px);line-height:1.4;margin:12px 0}h2{font-size:21px;margin:0 0 20px}h3{font-size:17px}p{margin:10px 0}.muted{color:var(--muted)}.hero{margin-bottom:32px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px;margin:20px 0}.section-label{display:flex;align-items:center;gap:10px;margin:0 0 14px;font-weight:600}.step{font:12px ui-monospace,monospace;color:var(--accent);border:1px solid var(--line);border-radius:6px;padding:2px 6px}fieldset{border:0;margin:0 0 28px;padding:0;min-width:0}legend{padding:0;margin-bottom:14px;font-weight:600}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.option{position:relative;display:flex;align-items:center;gap:14px;padding:17px;border:1px solid var(--line);border-radius:12px;cursor:pointer;background:#111621}.option:has(input:checked){border-color:var(--accent);background:#a3a0ff12}.option:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:3px}.option input{accent-color:var(--accent);margin-left:auto;order:3}.symbol{font:28px Georgia,serif;color:var(--accent);min-width:32px;text-align:center}.fields .option:last-child{grid-column:1/-1}.pills{display:flex;gap:10px;flex-wrap:wrap}.pills .option{padding:10px 20px;gap:10px}.split{display:grid;grid-template-columns:1fr 1fr;gap:25px}button{font:inherit;border:1px solid var(--line);border-radius:10px;background:#242b3d;color:var(--text);padding:12px 20px;cursor:pointer;min-height:48px}button:hover{border-color:var(--accent)}button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button:disabled{cursor:default;opacity:.7}.primary{background:var(--accent);color:#161526;border-color:var(--accent);font-weight:700}.wide{width:100%}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.tag{display:inline-block;font-size:12px;padding:3px 10px;background:#a3a0ff18;border-radius:6px;color:var(--accent);margin-right:7px}.question{font-size:22px;white-space:pre-wrap;overflow-wrap:anywhere;margin:28px 0}.choices{display:grid;gap:12px}.choice{text-align:left;background:#111621;display:flex;gap:15px;align-items:center;white-space:pre-wrap;overflow-wrap:anywhere}.letter{color:var(--muted);border:1px solid var(--line);border-radius:7px;padding:1px 9px}.choice.correct{border-color:var(--green);background:#7fe1b314}.choice.wrong{border-color:var(--red);background:#ff9da814}.feedback{border-left:3px solid var(--green);padding:14px 20px;background:#7fe1b30a;margin-top:24px}.feedback.wrong{border-color:var(--red)}.pre{white-space:pre-wrap;overflow-wrap:anywhere}.progress{height:5px;background:#30384b;border-radius:10px;margin:14px 0 24px;overflow:hidden}.progress span{display:block;height:100%;background:var(--accent)}.score{font-size:54px;font-weight:700;color:var(--accent)}.score small{display:inline;font-size:22px}.statline{display:flex;justify-content:space-between;gap:15px;align-items:center}.bar-row{margin:20px 0}.bar-row .progress{margin:8px 0}.weak{color:var(--red)}.weak .progress span{background:var(--red)}.review{border-top:1px solid var(--line);padding:20px 0}.review:first-of-type{border:0}.error{color:var(--red);border:1px solid #ff9da850;padding:15px;border-radius:10px;margin:16px 0}.spinner{display:inline-block;width:16px;height:16px;border:2px solid #333;border-top-color:white;border-radius:50%;animation:spin 1s linear infinite;margin-right:10px}@keyframes spin{to{transform:rotate(360deg)}}footer{max-width:1000px;padding:20px 28px 35px;margin:auto;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}footer span{display:block;margin-top:20px;font-size:11px}table{width:100%;border-collapse:collapse;font-size:14px}td,th{text-align:left;padding:12px 8px;border-bottom:1px solid var(--line)}.table-wrap{overflow-x:auto}.danger{color:var(--red)}@media(max-width:600px){header{padding:18px;gap:12px}.brand{font-size:17px}.logo{font-size:23px;padding:5px 11px}nav{gap:13px;font-size:12px}main{padding:28px 18px}.panel{padding:20px}.fields{grid-template-columns:1fr}.fields .option:last-child{grid-column:auto}.split{grid-template-columns:1fr;gap:0}.pills .option{padding:10px 13px}.question{font-size:19px}.actions button{flex:1 1 auto}.statline{font-size:14px}footer{padding:20px 18px}.score{font-size:44px}}
h1{text-wrap:balance}