:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#142e4c;background:#f1f5fa;font-synthesis:none;font-size:16px;--blue:#245bdd;--ink:#142e4c;--muted:#596a7e;--line:#d7e0ed}*{box-sizing:border-box}body{margin:0}main{max-width:760px;margin:auto;padding:32px 32px 20px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:48px;border:1px solid var(--line);background:white;color:var(--ink);border-radius:12px;font-weight:650;padding:12px 18px}button:hover{filter:brightness(.97)}button:disabled{cursor:wait;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #ec9828;outline-offset:4px}header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;color:var(--ink);font-weight:750;font-size:21px;letter-spacing:-.7px}.brand small{display:block;letter-spacing:2px;font-size:11px;margin-top:4px;font-weight:650;color:var(--muted)}.brand-icon{display:grid;place-items:center;background:var(--ink);color:white;width:44px;height:44px;border-radius:13px;font-size:34px;font-weight:450}.text-button{background:none;border:0;font-size:14px;padding:8px}.connection{font-size:13px;color:var(--muted);min-height:20px;margin:8px 0 23px}.connection.warning{color:#883914;background:#fff0d9;padding:12px;border-radius:8px}.connection button{margin:4px 8px;font-size:14px;min-height:38px;padding:7px 12px}.tabs{display:flex;border-bottom:1px solid var(--line);gap:28px;margin-bottom:30px}.tabs button{border:0;background:none;padding:12px 0;border-radius:0;color:var(--muted);font-size:16px}.tabs button[aria-current]{color:var(--ink);border-bottom:3px solid var(--blue)}.session-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:1.8px;color:var(--muted)}h1{font-size:28px;letter-spacing:-1px;line-height:1.2;margin:9px 0 0}h2{font-size:26px;letter-spacing:-.7px}.counter{white-space:nowrap;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}.track{height:5px;border-radius:5px;background:#dae4f1;margin-bottom:22px;overflow:hidden}#progress-bar{height:100%;width:0;background:var(--blue);transition:width .3s}.controls{display:flex;gap:14px;margin-bottom:18px}.controls label{display:grid;gap:6px;flex:1;font-size:13px;color:var(--muted)}select{width:100%;padding:11px 30px 11px 12px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);min-height:46px;font-size:14px}.answer-mode{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px;color:var(--muted);margin-bottom:16px}.answer-mode label{display:flex;align-items:center;gap:8px;min-height:36px}.answer-mode input{accent-color:var(--blue);width:18px;height:18px}#level-label{font-size:12px}.question-card,.panel{border:1px solid var(--line);background:white;border-radius:22px;padding:32px;box-shadow:0 10px 24px #233b6310}.question-card{text-align:center;border-top:4px solid var(--ink)}.question-caption{color:var(--muted);font-size:14px;margin:0 0 22px}.question{font-size:clamp(38px,8vw,66px);font-weight:650;letter-spacing:-2px;line-height:1.2;font-variant-numeric:tabular-nums;margin:18px 0 30px;overflow-wrap:anywhere}.primary{background:var(--blue);color:white;border-color:var(--blue);width:100%;min-height:54px}#answer-input{width:100%;padding:14px;text-align:center;font-size:24px;border:1px solid var(--line);border-radius:12px;margin-bottom:14px}.answer{font-size:46px;font-weight:650;color:var(--blue);margin:4px 0 20px;overflow-wrap:anywhere}.method{background:#eff4ff;padding:16px;border-radius:12px;text-align:left;font-size:15px;line-height:1.6}.method p{color:var(--muted);margin:6px 0 0}.rate-label{font-size:14px;color:var(--muted);margin-top:24px}.ratings{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.ratings button{padding:13px 5px;font-size:14px;min-height:76px;line-height:1.4}.ratings button span{display:block;font-size:20px;margin-bottom:5px}.ratings button[data-rating=comfortable]{background:#e6f5ee;border-color:#b8dccd;color:#18563e}.footnote{text-align:center;font-size:13px;color:var(--muted);margin:20px 0}.finish{text-align:center;line-height:1.6}.finish-mark{display:inline-grid;place-items:center;border-radius:50%;background:#e6f5ee;color:#18563e;width:56px;height:56px;font-size:25px}.finish p{color:var(--muted)}.login{margin-top:35px}.login h1{font-size:36px;line-height:1.2}.login p{color:var(--muted);line-height:1.6}.login form{display:grid;gap:12px;margin-top:30px}.login input{padding:14px;border:1px solid var(--line);border-radius:10px;width:100%}#login-error{color:#a33124;margin:0}.skill-row{padding:20px 0;border-bottom:1px solid var(--line)}.skill-top{display:flex;justify-content:space-between;gap:12px}.skill-top strong{font-size:18px}.skill-top span{font-size:14px;color:var(--muted)}.bands{display:flex;gap:6px;margin:12px 0 8px}.band{height:6px;background:#d7e0ed;border-radius:6px;flex:1}.band.unlocked{background:var(--blue)}.skill-row p{font-size:14px;color:var(--muted);margin:0;line-height:1.5}.about{margin:28px 0;font-size:15px;line-height:1.7;color:var(--muted)}summary{cursor:pointer;color:var(--ink);font-weight:600}.download{color:var(--blue);font-size:14px}footer{text-align:center;font-size:12px;color:var(--muted);margin-top:44px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}@media(max-width:480px){main{padding:22px 18px}.question-card,.panel{padding:25px 18px;border-radius:18px}.brand{font-size:19px}h1{font-size:24px}.tabs{margin-bottom:25px}.ratings{gap:6px}.ratings button{font-size:13px}.answer-mode{flex-wrap:wrap;gap:2px}.login h1{font-size:30px}.controls{gap:10px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.skill-picker{margin-bottom:20px;padding:20px}.skill-picker fieldset{border:0;border-top:1px solid var(--line);margin:14px 0;padding:12px 0 0}.skill-picker legend{font-weight:650;padding-right:10px}.skill-picker label{display:flex;align-items:center;gap:12px;min-height:44px;font-size:16px}.skill-picker input{width:20px;height:20px;accent-color:var(--blue)}#selection-error{color:#a33124;font-size:14px}