:root{color-scheme:light;--blue:#057cb6;--bright:#0693e3;--ink:#132e47;--muted:#506578;--line:#dce5eb;--paper:#fff;--bg:#f3f7fa;--soft:#eaf5fc;--green:#236345;--orange:#f4ba58;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.6}*{box-sizing:border-box}body{margin:0}button,a,input{touch-action:manipulation}button,input{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--blue)}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #c36900;outline-offset:4px}button:disabled{cursor:not-allowed;opacity:.45}.header{min-height:100px;max-width:1200px;padding:24px 36px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;gap:12px;text-decoration:none;color:var(--ink);align-items:center;font-size:20px;line-height:1.2}.brand small{display:block;font-size:12px;letter-spacing:1px;margin-top:6px}.brandmark{background:var(--bright);color:white;display:grid;place-items:center;width:49px;height:49px;border-radius:13px;font-size:36px;font-weight:800;padding-bottom:6px}.header-label{font-size:14px;color:var(--muted)}main{max-width:1128px;margin:20px auto 60px;padding:0 24px;min-height:65vh}.intro{display:grid;grid-template-columns:1.2fr 1fr;background:white;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 14px 45px #142c4608}.intro-main{padding:48px}.eyebrow{text-transform:uppercase;font-size:12px;font-weight:700;letter-spacing:2px;color:var(--blue);margin:0 0 14px}h1{font-size:clamp(2.1rem,4vw,3.4rem);line-height:1.12;letter-spacing:-1.5px;margin:0 0 24px;font-weight:750}h2{font-size:1.6rem;line-height:1.3;margin:0 0 20px;letter-spacing:-.4px}h3{font-size:1.1rem;margin:20px 0 10px}p{margin:0 0 18px}.lead{color:var(--muted);font-size:18px;max-width:480px}.chips{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.chip{border:1px solid var(--line);border-radius:7px;padding:5px 10px;font-size:14px;background:white}.primary,.secondary,.plain{border-radius:10px;min-height:48px;padding:12px 22px;font-weight:700;border:1px solid transparent}.primary{background:var(--blue);color:#fff}.primary:hover:not(:disabled){background:#066b9b}.secondary{color:var(--ink);background:#fff;border-color:var(--line)}.secondary:hover{background:var(--soft)}.plain{background:transparent;color:var(--muted);text-decoration:underline;font-weight:400;padding-left:0}.start{width:100%;margin-top:6px;display:flex;justify-content:space-between;align-items:center}.intro-side{padding:44px 36px;background:var(--ink);color:white;position:relative}.intro-side .eyebrow{color:#9ddaff}.path{list-style:none;margin:20px 0 24px;padding:0}.path li{display:flex;gap:16px;align-items:center;padding:12px 0;position:relative}.path li:not(:last-child):after{content:'';position:absolute;left:23px;width:1px;height:14px;background:#6f889e;bottom:-7px}.level-token{min-width:48px;height:40px;border:1px solid #69859c;border-radius:8px;display:grid;place-items:center;font-weight:bold;font-size:16px}.path li:first-child .level-token{background:var(--orange);color:var(--ink);border-color:var(--orange)}.path strong{font-size:16px;font-weight:500}.path small{display:block;color:#bdcedc;font-size:13px;line-height:1.4}.aside-note{font-size:14px;color:#c5d5e2;border-top:1px solid #436078;padding-top:20px;margin-bottom:0}.instructions{max-width:790px;margin:28px auto 0;color:var(--muted);font-size:14px}.instructions summary{color:var(--ink);cursor:pointer;font-weight:700;font-size:16px;margin-bottom:10px}.instructions p{margin:12px 0}.instructions ul{padding-left:20px}.topline{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.back-label{font-size:14px;color:var(--muted)}.stage-pill{font-size:14px;border:1px solid var(--line);background:#fff;padding:6px 12px;border-radius:8px}.workspace{display:grid;grid-template-columns:220px minmax(0,1fr);gap:30px;align-items:start}.rail{padding:24px 20px;background:white;border:1px solid var(--line);border-radius:16px}.rail .path{margin:0}.rail .path li{padding:12px 0;gap:10px;color:var(--muted)}.rail .path small{color:var(--muted);font-size:12px}.rail .level-token{color:var(--muted);background:white!important;border-color:var(--line);font-size:14px;min-width:45px}.rail .path li.current .level-token{background:var(--blue)!important;color:white;border-color:var(--blue)}.rail .path li.done .level-token{background:#e8f5ec!important;color:var(--green);border-color:#bad8c5}.rail .path li:after{left:22px;background:var(--line)}.rail-note{font-size:13px;color:var(--muted);margin-top:22px;margin-bottom:0}.question-card,.result-card,.transition{background:white;border:1px solid var(--line);border-radius:20px;padding:36px}.question-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:12px;font-size:14px;color:var(--muted)}progress{width:100%;height:6px;border:0;border-radius:10px;overflow:hidden;display:block;margin:0 0 30px;background:#edf1f4}progress::-webkit-progress-bar{background:#edf1f4}progress::-webkit-progress-value{background:var(--bright)}progress::-moz-progress-bar{background:var(--bright)}.question-card h1{font-size:1.6rem;line-height:1.45;letter-spacing:-.3px;margin:16px 0 24px}.passage{background:var(--soft);border-left:3px solid var(--bright);padding:20px 22px;border-radius:0 10px 10px 0;white-space:pre-line;font-size:17px;line-height:1.8;margin:12px 0 24px}.options{display:grid;gap:12px;border:0;margin:0;padding:0}.option{position:relative;display:flex;align-items:center;gap:13px;min-height:60px;border:1px solid var(--line);border-radius:10px;padding:13px 16px;cursor:pointer;transition:background .12s,border-color .12s}.option:hover{background:#f6fbfe;border-color:#8fc5e1}.option:has(input:checked){background:var(--soft);border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.option input{accent-color:var(--blue);width:18px;height:18px;flex:0 0 18px;margin:0}.option .letter{font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:5px;width:26px;min-width:26px;height:26px;display:grid;place-items:center}.option.skip{background:#f8fafb;min-height:50px;color:var(--muted);font-size:14px;margin-top:6px}.question-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:26px}.hint{font-size:13px;color:var(--muted);margin:0}.transition{max-width:720px;margin:36px auto;padding:48px}.transition h1{font-size:2.3rem}.transition .level-token{background:var(--soft);border:none;color:var(--blue);width:65px;height:54px;margin-bottom:26px;font-size:21px}.result-top{display:flex;align-items:center;gap:28px;margin:24px 0}.result-badge{font-size:2.8rem;font-weight:750;background:var(--soft);border-radius:16px;min-width:145px;min-height:124px;display:grid;place-items:center;letter-spacing:-1px}.result-top h1{font-size:2rem;letter-spacing:-.7px;margin-bottom:10px}.result-top p{margin:0;color:var(--muted)}.notice{padding:18px 20px;background:#fff6e6;border-left:3px solid #bd7c11;border-radius:0 10px 10px 0;font-size:15px;margin:24px 0}.results-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}th,td{padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:12px;color:var(--muted);font-weight:700}td strong{white-space:nowrap}.check-list{padding-left:20px;color:var(--muted);font-size:15px}.check-list li{margin-bottom:10px}.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 0}.method{margin-top:25px;border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:14px}.method summary{cursor:pointer;color:var(--ink);font-weight:700}.method p{margin-top:12px}.tags{display:flex;gap:10px;flex-wrap:wrap}.tags span{font-size:14px;background:var(--bg);padding:7px 10px;border-radius:6px}.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}.loading{padding:32px}footer{max-width:1128px;margin:0 auto;padding:24px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}@media(max-width:800px){.intro{grid-template-columns:1fr}.intro-main{padding:32px}.intro-side{padding:28px 32px}.intro-side .path{display:grid;grid-template-columns:1fr 1fr;gap:4px 18px}.intro-side .path li:after{display:none}.workspace{grid-template-columns:1fr;gap:14px}.rail{padding:12px 16px}.rail .eyebrow,.rail-note,.rail .path small,.rail .path strong{display:none}.rail .path{display:flex;justify-content:space-between;gap:8px}.rail .path li{padding:0}.rail .path li:after{display:none}.rail .level-token{min-width:40px;height:34px}.results-grid{grid-template-columns:1fr}}@media(max-width:480px){.header{padding:20px;min-height:88px}.header-label{display:none}main{padding:0 14px;margin-top:8px}.intro-main{padding:28px 22px}.intro-side{padding:24px 22px}h1{font-size:2.3rem}.intro-side .path{grid-template-columns:1fr}.intro-side .path li{padding:7px 0}.intro-side .path small{display:inline;margin-left:6px}.question-card,.result-card{padding:24px 18px}.question-card h1{font-size:1.35rem}.passage{padding:16px;font-size:16px}.option{padding:12px;gap:9px}.option .letter{display:none}.question-actions{align-items:stretch;flex-direction:column}.question-actions .primary{width:100%}.result-top{align-items:flex-start;flex-direction:column;gap:16px}.result-top h1{font-size:1.7rem}.result-badge{min-height:90px;min-width:120px;font-size:2.4rem}.transition{padding:30px 24px}.topline{align-items:flex-start}.stage-pill{font-size:12px}.rail{padding:10px}.rail .level-token{min-width:36px}.rail .path{gap:5px}footer{flex-direction:column;gap:8px}.result-actions>*{width:100%}}@media print{body{background:white}.header{padding:0 0 20px}main{padding:0;margin:0;max-width:none}.result-card{border:0;padding:0;box-shadow:none}.result-actions,.method,.topline,footer{display:none}.results-grid{display:block}.result-badge,.notice{print-color-adjust:exact}.result-top{break-inside:avoid}h3{break-after:avoid}.check-list,table{break-inside:avoid}.header-label{display:block}}