:root{--indigo:#291762;--purple:#5d40b8;--pale:#f5f4fb;--stroke:#dfdbee;--ink:#211e36;--muted:#64627b;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--pale)}*{box-sizing:border-box}body{margin:0}button,a{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}a{color:inherit}nav{display:flex;gap:18px}.mast{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px max(18px,4vw);background:var(--indigo);color:white}.brand{font-size:1.35rem;letter-spacing:.04em;text-decoration:none;font-weight:850}.strap{font-size:.66rem;letter-spacing:.14em;color:#dfd9ff}.mast nav a{color:#f2edff;text-decoration:none;font-weight:650}.shell{max-width:1280px;margin:auto;padding:25px 18px 60px}.hero{background:linear-gradient(114deg,#291762,#6542c6);color:white;padding:32px 35px;border-radius:19px}.kicker{font-size:.72rem;letter-spacing:.16em;font-weight:800;color:#bffaff}.hero h1{font-size:clamp(1.65rem,3.5vw,2.75rem);line-height:1.15;margin:10px 0}.hero p{margin:6px 0}.hero .small{font-size:.8rem;color:#ebe3ff}.notice{border:1px solid #cfc5ec;background:#eee8fb;border-radius:12px;margin:20px 0;padding:14px 18px;min-height:52px}.notice.error{background:#fff3f0;border-color:#e5bbae}.catalog{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:15px;margin:22px 0}.catalog-card,.question-panel,.palette-panel,.result{background:white;border:1px solid var(--stroke);border-radius:17px;padding:22px;box-shadow:0 3px 12px #22104d06}.catalog-card h2{margin:6px 0 10px;font-size:1.2rem}.muted,.sub{color:var(--muted);font-size:.85rem}.btn{border:1px solid var(--stroke);border-radius:10px;padding:11px 17px;background:white;color:var(--indigo);font-weight:750}.btn.primary{background:#5940b7;color:white;border-color:#5940b7}.btn.dark{background:#30196f;color:white;border-color:#30196f}.btn.ghost{background:#f6f3ff}.catalog-card .btn{width:100%;margin-top:14px}.exam-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:white;border:1px solid var(--stroke);border-radius:15px;padding:12px 19px;margin-bottom:13px}.timer{font-weight:800;font-variant-numeric:tabular-nums;font-size:1.3rem;color:#392185;min-width:84px}.timer.urgent{color:#b53525}.exam-grid{display:grid;grid-template-columns:minmax(0,1fr) 305px;gap:14px}.question-panel h2{font-size:1.12rem;line-height:1.6;font-weight:710;margin:10px 0 19px;white-space:pre-wrap}.qmeta{font-size:.84rem;font-weight:750;color:#6b44bb}.option{width:100%;display:flex;gap:12px;text-align:left;align-items:flex-start;min-height:52px;padding:12px;margin-bottom:10px;background:#fff;border:1px solid var(--stroke);border-radius:11px;color:var(--ink)}.option .letter{background:#eee9fa;padding:1px 10px;border-radius:7px;min-width:32px;text-align:center;font-weight:800}.option.selected{border:2px solid var(--purple);background:#f5f0ff}.qnav{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px;justify-content:space-between}.palette-panel h3{margin:0 0 6px}.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin-top:14px}.palette button{border:1px solid var(--stroke);background:#f7f5fc;border-radius:9px;min-height:39px;font-weight:700}.palette button.answered{background:#e2f7ed;border-color:#71bc93}.palette button.active{outline:2px solid #6d48c5;outline-offset:1px}.result{margin-top:22px}.result .score{font-size:2.4rem;color:#4b2cad;font-weight:850}.review-card{border-top:1px solid #e9e6f1;padding:16px 0}.review-card summary{cursor:pointer;font-weight:750}.review-card p{margin:8px 0}.review-card .explanation{color:#4b475c;font-size:.9rem;background:#f5f3fb;padding:10px;border-radius:9px}footer{text-align:center;color:#69647e;padding:24px;font-size:.83rem}@media(max-width:810px){.exam-grid{grid-template-columns:1fr}.palette{grid-template-columns:repeat(10,1fr)}.mast{align-items:flex-start}.exam-toolbar{flex-wrap:wrap}}@media(max-width:510px){.palette{grid-template-columns:repeat(6,1fr)}.hero{padding:23px}.catalog-card,.question-panel,.palette-panel{padding:17px}.exam-toolbar{gap:8px}.mast nav{font-size:.85rem}.qnav .btn{padding:10px}}

/* Provisional release acknowledgement */
.provisional-consent{border:1px solid #c7bdf3;border-radius:14px;background:#f6f3ff;padding:16px 18px;margin:18px 0;color:#2c2356}.provisional-consent label{display:flex;align-items:flex-start;gap:12px;line-height:1.5;cursor:pointer}.provisional-consent input{margin-top:.35em;width:18px;height:18px;accent-color:#4e35b5;flex-shrink:0}.hero strong{color:#fff}.catalog-card .btn[disabled]{opacity:.55;cursor:not-allowed}

/* Keep the exam selector, consent, and result panels hidden during an active attempt.
   Explicit rule is necessary because .catalog { display:grid } otherwise overrides UA [hidden]. */
[hidden] { display:none !important; }