:root{color-scheme:dark;--bg:#081627;--p:#112a3d;--line:#365466;--text:#f2f8ff;--mute:#a8c0cf;--mint:#78ebc7;--purple:#c4b5fd;--red:#ffb4b4}
*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--text);background:radial-gradient(ellipse at 90% 0,#153f57 0,transparent 40%),linear-gradient(160deg,#0a1828,#061421);font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:inherit}.wrap{max-width:1200px;margin:0 auto;padding:22px 24px 60px}.top,.top nav,.brand{display:flex;align-items:center;gap:16px}.top{justify-content:space-between;padding-bottom:40px}.top nav{gap:20px}.top nav a{font-size:13px;text-decoration:none;color:var(--mute)}.top nav a:hover{color:white}.brand{text-decoration:none;font-weight:850;line-height:1.12;font-size:19px}.brand small{display:block;font-size:12px;color:var(--mute);font-weight:500;margin-top:5px}.mark{display:grid;place-items:center;background:linear-gradient(140deg,#91e9cf,#9aaaff);color:#092136;width:44px;height:44px;border-radius:14px;font-weight:900}.eyebrow{text-transform:uppercase;letter-spacing:.17em;font-weight:800;color:var(--mint);font-size:11px}h1{font-size:clamp(39px,6vw,72px);line-height:1.04;letter-spacing:-.055em;margin:13px 0 18px;max-width:800px}h1 em{font-style:normal;color:var(--mint)}h1.short{font-size:clamp(29px,3.5vw,43px)}h2{font-size:24px;letter-spacing:-.03em;line-height:1.28;margin:0 0 20px}h3{margin:0 0 20px;font-size:20px}.lead{font-size:clamp(16px,2vw,19px);max-width:690px;color:var(--mute);margin-bottom:40px}.panel{background:#10273aeb;border:1px solid var(--line);border-radius:24px;padding:30px;min-width:0}.setup-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(310px,.83fr);gap:18px;align-items:stretch}.field{margin-bottom:22px}.field label{display:block;font-weight:650;font-size:13px;margin-bottom:9px}.field select{width:100%;padding:14px 16px;background:#071b2b;border:1px solid #62869c;color:white;border-radius:12px;font:inherit;min-height:51px}.guide .info{display:flex;gap:15px;align-items:center;margin-bottom:23px;color:#dcecf5}.number{color:var(--mint);font-weight:800;letter-spacing:.07em}.disclaimer{color:var(--mute);font-size:13px;border-top:1px solid var(--line);padding-top:15px;margin-top:24px}.primary,.outline,.text-btn{font:750 14px system-ui,sans-serif;border-radius:13px;padding:13px 18px;min-height:44px;cursor:pointer}.primary{background:var(--mint);border:1px solid transparent;color:#082637}.primary:hover:not(:disabled){background:#b8f7e4}.outline{background:transparent;border:1px solid #7092a7;color:white}.text-btn{background:transparent;border:0;color:#cadce8;padding:8px 3px}.primary:disabled,.outline:disabled{cursor:not-allowed;opacity:.45}.turnstile{min-height:70px;margin:12px 0 24px}.status{min-height:22px;color:#ffd5b9;font-size:13px}.muted{color:var(--mute)}[hidden]{display:none!important}.exam-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:18px}.exam-heading h1{margin-bottom:5px}.clock{padding:11px 15px;border:1px solid #578094;border-radius:12px;font-weight:750;font-variant-numeric:tabular-nums}.progress-track{height:5px;background:#193747;border-radius:100px;overflow:hidden;margin-bottom:24px}.progress-track div{height:100%;width:0;background:var(--mint);transition:width .15s}.exam-layout{display:grid;grid-template-columns:286px minmax(0,1fr);gap:18px;align-items:start}.question-nav{position:sticky;top:16px}.qgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.qnum{padding:0;width:100%;aspect-ratio:1;border-radius:10px;background:#0b2334;border:1px solid #496b80;color:#dceefb;font-weight:800;cursor:pointer}.qnum.selected{border:2px solid var(--mint);background:#194756}.qnum.done{background:#285e54}.qnum.flagged{box-shadow:inset 0 0 0 2px #e9c68a}.legend{display:flex;gap:11px;flex-wrap:wrap;font-size:11px;color:var(--mute);margin:20px 0}.dot{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:5px;border:1px solid #668697}.dot.done{background:#285e54}.dot.flagged{background:#e9c68a}.question-nav .primary{width:100%}.question-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.question-head .outline{padding:7px 10px;font-size:12px;min-height:36px}.stimulus{border:1px solid #3b6376;border-radius:16px;background:#0a1e30;padding:22px;margin:15px 0 26px;color:#eff9ff;overflow-wrap:anywhere}.stimulus h3{font-size:17px;margin:0 0 13px}.stimulus .subtitle{font-size:13px;color:var(--mute);margin-top:-5px}.stimulus .lines{display:grid;gap:8px}.stimulus .line{padding:7px 10px;background:#132f40;border-radius:8px}.stimulus table{border-collapse:collapse;width:100%;font-size:14px}.stimulus td,.stimulus th{border:1px solid #426278;text-align:left;padding:10px;vertical-align:top}.stimulus th{background:#1e465a}.stimulus .message{margin-bottom:10px;border-left:3px solid var(--mint);background:#13374a;padding:10px 12px}.stimulus .map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;min-height:220px}.stimulus .map-cell{font-size:12px;text-align:center;padding:8px 3px;border-radius:9px;background:#214658}.stimulus .meter{height:16px;background:linear-gradient(90deg,var(--mint),#89a8ff);border-radius:4px}.stimulus .barrow{display:grid;grid-template-columns:minmax(90px,1fr) 50% 40px;align-items:center;gap:9px;font-size:13px;margin:10px 0}.options{display:grid;gap:10px}.opt{width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:#0b2437;border:1px solid #466b81;color:white;border-radius:13px;padding:14px 16px;font:inherit;cursor:pointer;overflow-wrap:anywhere}.opt:hover{border-color:#8de1db}.opt[aria-pressed="true"]{border-color:var(--mint);background:#17483f}.opt .letter{border:1px solid #63869c;flex-shrink:0;width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-weight:750}.opt[aria-pressed="true"] .letter{background:var(--mint);color:#052335}.question-actions{display:flex;gap:8px;align-items:center;justify-content:space-between;margin-top:25px}.summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:30px 0}.sum-card{background:var(--p);border:1px solid var(--line);padding:19px;border-radius:14px}.sum-card b{display:block;font-size:33px}.review{border:1px solid var(--line);padding:20px;margin-bottom:12px;border-radius:15px;background:#0e2538}.review h3{margin:0 0 8px;font-size:16px}.review .option-notes{display:grid;gap:8px;margin-top:16px;font-size:14px}.review .option-note{border-left:2px solid #4d7286;padding:7px 12px;background:#142f41;border-radius:0 8px 8px 0}.review .option-note.correct{border-color:var(--mint)}.review .option-note.wrong{border-color:var(--red)}.tag{font-size:12px;font-weight:800;padding:4px 8px;border:1px solid #4b687f;border-radius:5px}.bottom-actions{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.link-btn{text-decoration:none}.notice{margin:20px 0;padding:14px;background:#173b46;border:1px solid #4e7a80;border-radius:12px;color:#e8fdf6}footer{border-top:1px solid #304c61;color:var(--mute);font-size:12px;margin-top:48px;padding-top:25px}*:focus-visible{outline:3px solid var(--mint);outline-offset:2px}@media(max-width:850px){.exam-layout{grid-template-columns:1fr}.question-nav{position:static;order:2}.question{order:1}.qgrid{grid-template-columns:repeat(10,minmax(0,1fr))}.setup-grid{grid-template-columns:1fr}.top{padding-bottom:30px}}@media(max-width:520px){.wrap{padding:17px 14px 42px}.top{align-items:flex-start}.brand{font-size:15px}.mark{width:36px;height:36px}.top nav{display:grid;gap:3px;text-align:right}.top nav a{font-size:11px}.panel{padding:18px;border-radius:17px}.lead{margin-bottom:20px}.stimulus{padding:13px}.stimulus td,.stimulus th{font-size:12px;padding:6px}.stimulus .barrow{grid-template-columns:80px minmax(0,1fr) 30px;gap:5px;font-size:11px}.qgrid{grid-template-columns:repeat(5,minmax(0,1fr))}.question-actions{gap:3px;flex-wrap:wrap}.question-actions button{font-size:12px;padding:10px}.exam-heading{align-items:flex-start}.clock{font-size:12px}.summary{gap:6px}.sum-card{padding:12px}.sum-card b{font-size:24px}.question-head{flex-wrap:wrap}}

/* Release preparation: clearly visible feedback route without invented contact URL. */
.question-feedback{max-width:880px;margin:22px auto 8px;padding:14px 16px;border:1px solid #a8bad7;background:rgba(226,236,250,.85);color:#253b57;border-radius:14px;font-size:14px;line-height:1.55}
.question-feedback a{color:#1b4aa3;font-weight:750;text-underline-offset:3px}