:root {
  color-scheme: light;
  --ink: #24352e; --muted: #59675f; --accent: #245d46; --line: #d9dfda;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink); background: #fff; line-height: 1.55;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
header { max-width: 1160px; margin: auto; padding: 18px 24px; display: flex; gap: 24px; align-items: center; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; white-space: nowrap; }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
header nav { margin-left: auto; }
nav a { text-decoration: none; }
nav [aria-current] { color: var(--ink); text-decoration: underline; font-weight: 650; }
.logout { margin: 0; }
main { max-width: 1040px; margin: auto; min-height: 80vh; padding: 24px; }
.section-nav { border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 24px; }
h1, h2, h3 { line-height: 1.35; }
h1 { font-size: 1.65rem; margin: 0 0 20px; }
h2 { font-size: 1.18rem; margin: 26px 0 12px; }
h3 { font-size: 1.05rem; }
p { margin: 12px 0; }
.muted, .helptext, small, .breadcrumb { color: var(--muted); font-size: .88rem; }
.helptext { display: block; margin-top: 6px; }
.panel, .list-card { border: 1px solid var(--line); border-radius: 6px; padding: 18px; margin-bottom: 12px; }
.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.narrow { max-width: 530px; margin: 12px auto; }
label, legend { display: block; font-weight: 600; margin-bottom: 6px; }
input:not([type=hidden],[type=radio],[type=checkbox]), select { font: inherit; color: var(--ink); padding: 9px 10px; width: 100%; min-width: 0; border: 1px solid #85988b; border-radius: 4px; background: white; }
button, .button { display: inline-block; background: var(--accent); border: 1px solid var(--accent); border-radius: 4px; color: white; font: inherit; font-weight: 600; padding: 10px 16px; cursor: pointer; text-decoration: none; }
button:hover, .button:hover { background: #194c37; }
.secondary { background: white; color: var(--accent); }
.secondary:hover { background: #eff3ef; }
.text-button { background: transparent; border: 0; color: var(--ink); padding: 8px 0; }
.text-button:hover { background: transparent; text-decoration: underline; }
.actions, .page-heading, .section-heading { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.page-heading, .section-heading { justify-content: space-between; }
.page-heading { margin-bottom: 16px; }
.page-heading h1, .section-heading h2 { margin: 0; }
.section-heading { margin: 26px 0 12px; }
.actions form { margin: 0; }
.list-card { text-decoration: none; color: var(--ink); display: block; }
.list-card:hover { border-color: var(--accent); }
.list-card > span { display: block; color: var(--muted); font-size: .85rem; }
.session-row { display: flex; justify-content: space-between; gap: 20px; padding: 14px 16px; }
.session-row div { display: flex; flex-direction: column; }
.session-row div:last-child { text-align: right; flex-shrink: 0; }
.session-row span { color: var(--muted); font-size: .85rem; }
.filters { display: grid; grid-template-columns: 1.2fr 1fr 1fr .8fr; gap: 14px; padding: 8px 0; }
.filters .actions { grid-column: 1 / -1; }
.filters label { font-size: .88rem; }
.topic-row { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding: 16px 0; }
.topic-row h2 { margin: 0; font-size: 1.05rem; }
.topic-row p { margin: 5px 0 0; }
.statuses { display: flex; align-items: start; gap: 6px; flex-wrap: wrap; flex-shrink: 0; }
.tag { font-size: .78rem; background: #e8f1e8; color: #24512c; border: 1px solid #c1d5c1; border-radius: 4px; padding: 2px 6px; white-space: nowrap; }
.tag.neutral { background: #f2f3f2; color: var(--muted); border-color: var(--line); }
.pagination { justify-content: center; margin: 24px 0; }
.reading, .quiz { max-width: 760px; }
.reading { margin-top: 24px; }
.reading li { margin: 8px 0; }
.citations { font-size: .85rem; border-top: 1px solid var(--line); margin-top: 24px; }
details { margin: 12px 0; }
summary { cursor: pointer; }
.question { font-size: 1.35rem; margin: 24px 0 20px; }
progress { width: 100%; height: 7px; accent-color: var(--accent); }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.answers label { padding: 12px; border: 1px solid var(--line); border-radius: 4px; cursor: pointer; font-weight: 400; }
.answers label:has(input:checked) { border-color: var(--accent); background: #eef4ed; }
.answers input { margin-right: 10px; accent-color: var(--accent); }
.answers button { margin-top: 12px; }
.feedback { font-weight: 650; padding-left: 10px; border-left: 3px solid; }
.correct { color: #265735; }.incorrect { color: #8b3535; }
.score { font-size: 1.75rem; font-weight: 650; }
.answer-record { border-top: 1px solid var(--line); padding: 6px 0 16px; }
.answer-links { font-size: .9rem; }
.notice { padding: 12px 16px; border: 1px solid #bfd1bc; background: #f2f7ef; border-radius: 4px; margin-bottom: 20px; }
.errorlist { color: #9a2424; }
.account-code { overflow-wrap: anywhere; font-size: .86rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 24px 0; }
.inline-form { display: flex; align-items: end; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.inline-form select { width: auto; max-width: 100%; }.inline-form label { margin: 0; align-self: center; }.inline-form p { margin: 0; }
.stats { display: flex; flex-wrap: wrap; gap: 24px; margin: 24px 0; }
.stats dt { font-size: .88rem; color: var(--muted); }.stats dd { margin: 4px 0 0; font-size: 1.3rem; font-weight: 650; }
.table-wrap { max-width: 100%; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 10px 12px; }
th:first-child { padding-left: 0; }thead th { font-size: .83rem; color: var(--muted); }td { white-space: nowrap; }th small { display: block; font-weight: 400; }
.participation { margin: 28px 0; max-width: 600px; }
.study-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; border-bottom: 1px solid var(--line); padding: 10px 0; }.study-row > span { color: var(--muted); font-size: .85rem; }
.plain-list { padding-left: 20px; }.plain-list li { margin: 8px 0; }
footer { max-width: 1040px; margin: 24px auto 0; border-top: 1px solid var(--line); padding: 18px 24px; font-size: .82rem; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid #ac6b22; outline-offset: 3px; }
.skip { position: absolute; top: -80px; left: 15px; padding: 12px; background: white; z-index: 10; }.skip:focus { top: 10px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 850px) { header { flex-wrap: wrap; gap: 12px; }header nav { order: 3; width: 100%; margin: 0; gap: 20px; }.logout { margin-left: auto; }.filters { grid-template-columns: 1fr 1fr; }.columns { grid-template-columns: 1fr; } }
@media (max-width: 500px) { main { padding: 18px 16px; }header { padding: 14px 16px; }.brand { font-size: .93rem; }.section-nav { gap: 18px; font-size: .9rem; }.filters { grid-template-columns: 1fr; }.session-row, .topic-row { flex-direction: column; gap: 8px; }.session-row div:last-child { text-align: left; }.stats { gap: 18px; }.stats dd { font-size: 1.05rem; }table { font-size: .8rem; }th, td { padding: 10px 6px; }.inline-form { align-items: stretch; }.inline-form select { width: 100%; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }
@media (max-width: 500px) {
  table.coverage { table-layout: fixed; }
  .coverage th:first-child { width: 34%; overflow-wrap: anywhere; }
  .coverage th { font-size: .72rem; }
  .coverage th, .coverage td { padding: 10px 4px; }
}
.practice-controls { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.practice-controls label { font-size: .88rem; margin: 0; }
.practice-controls select { width: auto; max-width: 100%; }
@media (max-width: 540px) {
  .practice-controls { display: grid; grid-template-columns: 1fr; width: 100%; }
  .practice-controls select { width: 100%; }
}

/* Inline progressive-enhancement combobox: no blur-driven layout changes. */
.typed-answer label{display:block;font-weight:600;margin-bottom:6px}
.typed-answer input{width:100%;padding:12px;box-sizing:border-box}
#answer-suggestions{list-style:none;margin:6px 0 0;padding:4px;border:1px solid #aabcc9;border-radius:4px;max-height:240px;overflow:auto;background:white}
#answer-suggestions li{padding:9px 12px;cursor:pointer;border-radius:3px;overflow-wrap:anywhere}
#answer-suggestions li[aria-selected="true"]{background:#e5eef7;color:#173e60;box-shadow:inset 3px 0 #234f77}
#answer-suggestions li:hover{background:#edf3f8}
#answer-status{min-height:22px;margin:10px 0}
.answer-actions{display:flex;gap:10px;flex-wrap:wrap}
#answer-status.answer-prompt{color:#805400;background:#fff5d8;border-left:3px solid #bc8500;border-radius:3px;padding:10px 12px;font-weight:600}
@media(max-height:760px){#answer-suggestions{max-height:180px}}