:root{color-scheme:dark;--bg:#101c1f;--panel:#15262a;--line:#2b4145;--ink:#eaf2e7;--muted:#a0b5b3;--lime:#c5f58b}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.55 'Segoe UI',Arial,sans-serif}button,input{font:inherit}button{cursor:pointer}a{color:var(--lime);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:4px}header{min-height:82px;padding:17px 3.5%;display:flex;align-items:center;gap:45px;border-bottom:1px solid var(--line)}.brand{font-size:27px;letter-spacing:-1px;font-weight:700;color:var(--ink);white-space:nowrap}.brand span{color:var(--lime)}nav{display:flex;gap:27px}nav a{font-size:14px;color:var(--muted)}nav a[aria-current]{color:var(--lime);border-bottom:2px solid;padding-bottom:10px}.edition{margin-left:auto;font-size:10px;letter-spacing:2px;color:var(--muted)}main{max-width:1480px;margin:auto;padding:0 4%}.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:650;color:var(--lime)}h1{font-size:clamp(36px,4.5vw,64px);font-weight:550;letter-spacing:-2.3px;line-height:1.08;margin:22px 0}em{font-style:normal;color:var(--lime)}h2{font-size:29px;letter-spacing:-.7px;line-height:1.18}h3{font-size:20px;font-weight:550}.muted{color:var(--muted)}.small{font-size:12px;color:var(--muted)}.intro{padding-top:55px;display:grid;grid-template-columns:1fr 1fr;gap:35px 55px}.intro-copy{padding:14px 0}.lead{font-size:24px;line-height:1.4}.intro-copy>.muted{max-width:465px}.intro-stats{display:flex;gap:42px;margin:32px 0}.intro-stats strong{display:block;font-size:30px;font-weight:450}.intro-stats span{display:block;font-size:12px;color:var(--muted)}.primary{border:0;background:var(--lime);color:#17251c;padding:13px 23px;border-radius:8px;font-weight:650;transition:background .15s}.primary:hover{background:#dafbb1}.primary:disabled{opacity:.5;cursor:wait}.quiet{color:var(--ink);border:1px solid var(--line);background:transparent;border-radius:7px;padding:9px 14px;font-size:13px}.quiet:hover{background:#263b3e}.intro-visual{position:relative;min-height:520px;border-radius:22px;border:1px solid var(--line);background:radial-gradient(ellipse at 50% 40%,#2c4747,#14272c 70%);overflow:hidden}.intro-visual:before{content:'';position:absolute;inset:35px;border:1px solid #9bbeb512;border-radius:50%;pointer-events:none}#preview-host{position:absolute;inset:0 0 45px}.specimen-caption{position:absolute;bottom:22px;left:24px;right:24px;display:flex;justify-content:space-between;font-size:9px;letter-spacing:1.4px;color:#a9c4bb}.how{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:40px;border-top:1px solid var(--line);padding-top:30px}.how article>span{font-size:12px;color:var(--lime)}.how h3{margin:10px 0}.how p{font-size:14px;color:var(--muted);margin:0}.collection{grid-column:1/-1;border:1px solid var(--line);border-radius:10px;padding:18px 22px}.collection summary{cursor:pointer}.collection p{color:var(--muted);font-size:13px}#selection-count{float:right;font-size:12px;color:var(--muted)}#choices{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}#choices label{display:flex;gap:10px;font-size:14px;align-items:center}input[type=checkbox]{accent-color:var(--lime);width:16px;height:16px}.session-heading{display:flex;align-items:center;justify-content:space-between;padding-top:35px;gap:20px}.session-heading h1{font-size:36px;letter-spacing:-1.3px;margin:12px 0 26px}.quiz-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(300px,1fr);gap:27px}.model-panel{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:radial-gradient(ellipse at 50% 40%,#2a4447,#14252a 75%)}.model-meta{display:flex;justify-content:space-between;padding:20px 23px;font-size:10px;letter-spacing:1.4px;color:var(--muted)}#step-tag{color:var(--lime)}#stage{position:relative;height:550px}#model-host,#target-arrow{position:absolute;inset:0;width:100%;height:100%}#target-arrow{pointer-events:none}canvas{display:block;width:100%;height:100%;touch-action:none}#target-status{position:absolute;left:15px;bottom:7px;color:var(--lime);font-size:12px}.model-controls{display:flex;justify-content:space-between;gap:10px;align-items:center;border-top:1px solid var(--line);padding:14px 18px}.model-controls>span{font-size:11px;color:var(--muted)}.answer-panel{padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:16px}.progress-caption{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}progress{width:100%;height:5px;border:0;margin:13px 0 21px;accent-color:var(--lime);background:#314448;border-radius:10px}progress::-webkit-progress-bar{background:#314448;border-radius:10px}progress::-webkit-progress-value{background:var(--lime);border-radius:10px}.step-line{display:flex;gap:8px;margin-bottom:33px;font-size:11px}.step-line span{padding:6px 12px;border:1px solid var(--line);border-radius:20px;color:var(--muted)}.step-line .active{border-color:#6e9252;background:#c5f58b13;color:var(--lime)}#prompt{margin:13px 0}#question-help{font-size:14px;margin:10px 0 28px}form label{display:block;font-size:12px;margin-bottom:8px}input[type=text]{width:100%;padding:14px 13px;border:1px solid #506465;border-radius:8px;background:#102024;color:var(--ink);font-size:17px}input:disabled{opacity:.7}form .primary{width:100%;display:flex;justify-content:space-between;margin-top:14px}.text-button{border:0;background:none;color:var(--muted);padding:15px 0;font-size:12px;text-decoration:underline}#feedback{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}#feedback.wrong #feedback-state{color:#f0b5a0}#feedback h3{margin:10px 0;font-size:25px}#feedback p{font-size:13px;color:var(--muted)}#feedback .primary{width:100%}.session-score{display:flex;gap:26px;border-top:1px solid var(--line);padding-top:20px;margin-top:24px;color:var(--muted);font-size:12px}.session-score b{color:var(--ink);font-size:19px;margin-right:4px}#results{padding:50px 0}#results h1{font-size:48px}.result-top{display:flex;align-items:center;gap:40px;padding:30px 0 40px}.result-ring{height:160px;width:160px;border:5px solid var(--lime);border-radius:50%;display:flex;flex-direction:column;justify-content:center;align-items:center;flex-shrink:0}.result-ring strong{font-size:40px;font-weight:500}.result-ring span{font-size:12px;color:var(--muted)}#back{margin-left:10px}#round-results{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.round-result{padding:19px;border:1px solid var(--line);border-radius:10px;display:flex;justify-content:space-between;gap:12px;font-size:14px}.round-result b{color:var(--lime)}#review{margin-top:25px;padding:20px;border:1px solid var(--line);border-radius:10px}summary{cursor:pointer}#misses{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.miss{font-size:13px;border-bottom:1px solid var(--line);padding:12px}.miss b{color:var(--lime);display:block}.miss p{color:var(--muted);margin:5px 0}.miss button{margin:8px 0}footer{border-top:1px solid var(--line);margin:45px 0 0;padding:23px 0;display:flex;justify-content:space-between;gap:30px;font-size:11px;color:var(--muted)}footer details{max-width:610px}#load-error{border:1px solid #d89982;padding:25px;margin:30px 0;border-radius:10px}.credits{max-width:800px;padding:40px 0}.credits p{color:var(--muted)}
@media(max-width:950px){header{gap:25px}.edition{display:none}.intro{gap:25px}.intro-visual{min-height:460px}.intro-stats{gap:25px}.quiz-grid{grid-template-columns:minmax(0,1.2fr) minmax(290px,1fr);gap:15px}.answer-panel{padding:20px}#stage{height:500px}.model-controls{flex-wrap:wrap}#round-results{grid-template-columns:1fr 1fr}}
@media(max-width:650px){header{padding:13px 18px;flex-wrap:wrap;gap:13px}.brand{font-size:24px}nav{gap:19px;width:100%;flex-wrap:wrap}nav a{font-size:12px}main{padding:0 17px}.intro{display:flex;flex-direction:column;padding-top:22px;gap:20px}.intro h1{font-size:42px}.intro-copy{padding:0}.lead{font-size:21px}.intro-visual{min-height:300px;order:1}.how{order:2;display:block}.how article{margin-bottom:23px}.collection{order:3}#choices{grid-template-columns:1fr 1fr}.intro-stats{margin:20px 0}.session-heading{padding-top:25px}.session-heading h1{font-size:28px;margin-bottom:20px}.quiz-grid{display:flex;flex-direction:column}.model-meta{padding:13px 16px}#stage{height:360px}.model-controls{padding:10px}.model-controls>span{font-size:10px}.quiet{font-size:12px}.answer-panel{padding:22px}.step-line{margin-bottom:20px}#question-help{margin-bottom:17px}footer{flex-direction:column;gap:10px;margin-top:30px}#results h1{font-size:37px}.result-top{gap:20px;align-items:flex-start}.result-ring{width:100px;height:100px;border-width:3px}.result-ring strong{font-size:28px}.result-top h2{font-size:22px;margin-top:0}.result-top .primary{font-size:13px;padding:11px}#back{margin:12px 0 0}#round-results,#misses{grid-template-columns:1fr}.specimen-caption{font-size:8px}.intro .primary{width:100%}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}