:root{font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:#1b2940;background:#f2f6fc}*{box-sizing:border-box}body{margin:0}header{background:#102745;color:white;padding:24px max(22px,calc((100vw - 1180px)/2))}header h1{margin:4px 0;font-size:1.7rem}header p{color:#c8d9f0;margin:0}.shell{max-width:1180px;margin:24px auto;padding:0 20px;display:grid;grid-template-columns:270px 1fr;gap:20px}.panel{background:white;border:1px solid #d7e1ee;border-radius:16px;padding:22px;box-shadow:0 6px 24px #21344b0c}label{font-weight:650;display:block;margin:12px 0 5px}select,input,button{font:inherit}select,input{width:100%;padding:10px;border-radius:9px;border:1px solid #b9c8da}button{border:1px solid #bacce4;border-radius:10px;background:#fff;color:#1c3351;padding:11px 14px;cursor:pointer}button:disabled{opacity:.48;cursor:not-allowed}button.primary{background:#2355bc;color:white;border-color:#2355bc}button:hover:not(:disabled){filter:brightness(.96)}.full{width:100%;margin-top:16px}.muted{color:#5c6e85}.small{font-size:.83rem}.warn{background:#fff3d5;border:1px solid #e9ca78;padding:12px;border-radius:10px}.good{background:#e4f7ec;border:1px solid #a6dfbd;padding:12px;border-radius:10px}.hide{display:none!important}.toolbar{display:flex;gap:8px;justify-content:space-between;align-items:center;flex-wrap:wrap}.toolbar .pill{background:#ecf2fb;padding:5px 10px;border-radius:30px;font-size:.8rem}.navgrid{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.navgrid button{min-width:42px;padding:9px}.navgrid button.selected{background:#2355bc;color:white}.navgrid button.answered{border-color:#238559}.option{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid #d0daea;border-radius:10px;margin:9px 0;cursor:pointer}.option input{width:auto}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.resultline{padding:10px;border-radius:9px;margin:8px 0;background:#f0f4fa}.error{color:#b52b33}a{color:#2157bb}@media(max-width:760px){.shell{grid-template-columns:1fr}.panel{padding:18px}}
.pbq-field{display:grid;gap:9px;padding:14px;margin:12px 0;border:1px solid #c9d7eb;border-radius:12px;background:#f9fbff}
.pbq-field strong{font-size:.94rem}
.pbq-field select{background:white}
#feedback{white-space:pre-wrap;line-height:1.6}
#stem{white-space:pre-line}
#nav{max-height:178px;overflow:auto}
@media(max-width:760px){.pbq-field{padding:11px}#feedback{font-size:.91rem}}

.track-switch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.track-switch button{display:flex;flex-direction:column;align-items:flex-start;text-align:left;gap:6px;padding:17px;border:2px solid #cfdaed;background:#f7faff}
.track-switch button strong{font-size:1rem}
.track-switch button span{font-size:.82rem;line-height:1.45;color:#506682}
.track-switch button[aria-pressed="true"]{background:#e8f0ff;border-color:#2355bc;box-shadow:0 0 0 2px #2355bc1f}
button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #4475e4;outline-offset:2px}
@media(max-width:520px){.track-switch{grid-template-columns:1fr}}

.beta-notice{max-width:900px;margin-top:17px;border:1px solid #b8cbec;background:#173656;border-radius:10px;padding:13px 16px;color:#fff;display:grid;gap:5px;line-height:1.45}.beta-notice strong{font-size:.87rem}.beta-notice span{font-size:.83rem;color:#e0eaf8}

/* Fixed, versioned assessments are the primary study experience. */
.fixed-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:14px 0}
.fixed-controls label{margin:0}
.fixed-controls select{max-width:340px}
.published-list{display:grid;gap:12px;margin:12px 0 20px}
.published-card{padding:17px;border:1px solid #ccd9ec;border-radius:12px;background:#f8fbff}
.published-card .published-heading{display:flex;flex-direction:column;gap:5px}
.published-card p{margin:10px 0}
.published-card button{margin-top:4px}
.fixed-empty{padding:16px;border:1px dashed #a9bcda;border-radius:12px;background:#f7faff;line-height:1.6}
#advancedToggle{width:100%;text-align:left;background:#eef3fb;border:1px solid #bdcee6;margin:8px 0}
#advancedPanel{padding:8px 0 0}
@media(max-width:520px){.fixed-controls{display:block}.fixed-controls select{max-width:100%}}