:root {
  --text: #383a3c;
  --link: #1177d1;
  --border: #dfdfdf;
  --drawer-width: 285px;
  --topbar-height: 50px;
  --question-bg: #def2f8;
  --question-text: #306473;
  --status-bg: #dee2e6;
  --status-border: #cad0d7;
  --nav-outline: #22252a;
  --nav-answered: #858e96;
  --button-secondary: #ced4da;
  --surface: #fff;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--surface);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--topbar-height) + 16px); }
body { margin: 0; padding-top: var(--topbar-height); }
[hidden] { display: none !important; }
a, .link-button { color: var(--link); text-decoration: none; }
a:hover, .link-button:hover { color: #0b4f8a; text-decoration: underline; }
a:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}
button, input, select { font: inherit; }
button, summary { cursor: pointer; }
button { color: inherit; }
h1, h2, h3 { margin: 0 0 8px; font-weight: 300; line-height: 1.2; }
h1 { font-size: 37.5px; }
h2 { font-size: 30px; }
h3 { font-size: 22.5px; }
p { margin: 0 0 1rem; }
.sr-only, .skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip:focus { position: fixed; top: 4px; left: 65px; z-index: 12; background: white; padding: 5px; }

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  background: var(--surface);
  box-shadow: 0 2px 4px #00000012;
}
.drawer-toggle {
  border: 0;
  color: #222529;
  background: #e9ecef;
  height: 39px;
  width: 49px;
  flex: none;
  display: grid;
  place-items: center;
}
.drawer-toggle:hover { background: #dfe2e6; }
.brand {
  display: flex;
  gap: 4px;
  flex: none;
  align-items: center;
  font-size: 18.75px;
  color: #242424;
  margin-right: 7px;
}
.brand img { display: block; }
.brand:hover { color: #242424; text-decoration: none; }
.icon { width: 1em; height: 1em; vertical-align: -.12em; fill: currentColor; }
.top-menu { position: relative; color: #808080; }
.top-menu summary { display: flex; align-items: center; gap: 4px; list-style: none; white-space: nowrap; }
.top-menu summary::-webkit-details-marker { display: none; }
.top-menu summary::after {
  display: inline-block;
  content: "";
  border-top: 4px solid;
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  margin-left: 5px;
}
.top-menu .course-icon { width: 1.3em; }
.top-account { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.practice-label { color: #60676d; font-size: 12px; white-space: nowrap; }
.bell { color: #808080; }
.profile { color: var(--link); }
.avatar { display: inline-flex; width: 35px; height: 35px; margin-right: 10px; }
.avatar .icon { width: 100%; height: 100%; }
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: max-content;
  min-width: 145px;
  background: white;
  border: 1px solid var(--border);
  box-shadow: 0 4px 8px #00000019;
  padding: 4px 0;
}
.profile .dropdown { left: auto; right: 0; }
.dropdown > * {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 6px 12px;
  color: var(--text);
}
.dropdown > *:hover { background: #f2f2f2; text-decoration: none; color: var(--text); }
.dropdown [aria-pressed="true"] { font-weight: 700; }

.drawer {
  position: fixed;
  z-index: 8;
  top: var(--topbar-height);
  bottom: 0;
  left: 0;
  width: var(--drawer-width);
  overflow: auto;
  background: #f2f2f2;
  padding: 20px;
}
.drawer-group { border: 1px solid var(--border); margin-bottom: 4px; }
.drawer-group > * {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 47.5px;
  padding: 11px 20px;
  color: #495057;
  background: white;
}
.drawer-group > * + * { border-top: 1px solid var(--border); }
.drawer-group a:hover { text-decoration: none; color: #343a40; background: #f8f9fa; }
.drawer-group .subcourse { padding-left: 24px; }
.drawer-group [data-icon] { display: inline-grid; width: 17px; place-items: center; }
.drawer-group .course-icon { width: 20px; }
.site { margin-left: var(--drawer-width); }
.drawer-closed .drawer { display: none; }
.drawer-closed .site { margin-left: 0; }

.main { margin: 16px 15px 36px; }
.panel { border: 1px solid var(--border); background: var(--surface); min-width: 0; }
.course-header { padding: 20px; margin-bottom: 16px; }
.course-header h1 { margin: 0 0 14px; }
.breadcrumbs { padding: 0; margin: 0 0 3px; list-style: none; display: flex; flex-wrap: wrap; }
.breadcrumbs li + li::before { display: inline-block; content: "/"; padding: 0 8px; color: #868e96; }

.quiz-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; align-items: start; gap: 15px; }
.quiz-panel { padding: 20px; }
.question {
  display: grid;
  grid-template-columns: 105px minmax(0, 1fr);
  align-items: start;
  gap: 22.5px;
  margin-bottom: 27px;
}
.question-info {
  padding: 8px;
  background: var(--status-bg);
  border: 1px solid var(--status-border);
  font-size: 12px;
  line-height: 1.5;
}
.question-info h2 { font-size: 12px; font-weight: 400; margin-bottom: 7px; }
.question-info h2 strong { font-size: 18px; }
.question-info p { margin: 0 0 9px; }
.flag-button {
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  line-height: inherit;
}
.flag-button:hover { text-decoration: underline; }
.flag-button [data-icon] { color: #777; }
.flag-button[aria-pressed="true"] [data-icon] { color: #bd2f26; }
.question-body { padding: 13px 20px 18px; background: var(--question-bg); color: var(--question-text); }
.prompt + .prompt { margin-top: 8px; }
.prompt ul { padding-left: 16px; margin: 8px 0 14px; }
.math, .prompt i, .diagram text { font-family: "Cambria Math", "STIX Two Math", "Times New Roman", serif; font-size: 1.12em; }
.math { font-style: italic; }
math[display="block"] { margin: 10px 0; }
.diagram {
  width: max-content;
  max-width: 100%;
  margin: 10px auto 0;
  background: white;
  color: #222;
}
.diagram svg { width: min(200px, 100%); display: block; }
.diagram text { font-size: 14px; font-style: italic; }
.responses { border: 0; margin: 22px 0 0; padding: 0; min-width: 0; }
.responses legend { padding: 0; }
.link-button { border: 0; background: transparent; padding: 0; }
.response { display: flex; align-items: baseline; padding-left: 5px; gap: 6px; min-height: 23.5px; }
.response input { flex: none; margin: 0; accent-color: #007bff; }
.response label { cursor: pointer; }
.response math { vertical-align: middle; margin: 1px 0; }

.quiz-nav { padding: 16px; position: sticky; top: clamp(66px, calc(100dvh - 320px), 253px); }
.quiz-nav h3 { font-size: 18.75px; margin-bottom: 16px; }
.question-grid { display: grid; grid-template-columns: repeat(9, 30px); gap: 6px; }
.question-cell {
  position: relative;
  display: block;
  height: 40px;
  border: 3px solid var(--nav-outline);
  border-radius: 3px;
  color: var(--nav-outline);
  font-size: 13.5px;
  text-align: center;
  line-height: 15px;
  overflow: hidden;
  background: white;
}
.question-cell.answered { background: linear-gradient(white 50%, var(--nav-answered) 50%); }
.question-cell.flagged::after {
  position: absolute;
  top: 0;
  right: 0;
  content: "";
  border-right: 7px solid #bd2f26;
  border-bottom: 7px solid transparent;
}
.question-cell:hover { color: var(--nav-outline); background-color: #f1f3f5; }
.nav-save { display: block; width: fit-content; margin-top: 15px; }
.nav-time { margin: 16px 0 7px; }
[data-time] { font-variant-numeric: tabular-nums; }
.summary-view .quiz-nav, .results-view .quiz-nav { position: static; }
.summary-view .question-cell, .results-view .question-cell { border-width: 1px; border-color: #70757a; }
.summary-view .nav-time, .results-view .nav-time, .results-view .nav-save { display: none; }
.summary-view .nav-save { margin-bottom: 8px; }

.button {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid transparent;
  text-align: center;
  cursor: pointer;
}
.button:hover { text-decoration: none; }
.primary { background: var(--link); color: white; }
.primary:hover { background: #0e63ae; color: white; }
.secondary { background: var(--button-secondary); color: #212529; }
.secondary:hover { background: #bcc4cc; color: #212529; }
.save-attempt { text-align: right; padding-top: 22px; }
.activity-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, 31%) minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  padding: 0 13px 4px;
}
.activity-nav a:last-child { text-align: right; }
.activity-nav select {
  width: 100%;
  padding: 7px 12px;
  background: white;
  border: 1px solid var(--status-border);
  color: #495057;
}
.status-table { width: 100%; border-collapse: collapse; margin: 0 0 20px; }
.status-table th, .status-table td {
  text-align: left;
  padding: 12px;
  border-top: 1px solid #dee2e6;
}
.status-table thead th { border-bottom: 2px solid #dee2e6; }
.status-table tbody tr:nth-child(odd) { background: #f2f2f2; }
.status-table tbody tr:hover { background: #e9ecef; }
#summary .status-table th:first-child { width: 38.5%; }
.summary-actions { text-align: center; margin-bottom: 46px; }
.summary-time { margin: 15px 0 22px; }
#submission-deadline { margin-bottom: 8px; }
#results .button, #notice .button { margin-bottom: 20px; }
.footer { background: #373a3c; color: white; padding: 19px 20px 16px; }
.footer > div { width: min(1110px, 100%); margin: 0 auto; }
.footer a { color: white; text-decoration: underline; }
.footer p { margin: 0; }

dialog { color: var(--text); border: 1px solid #bbb; width: min(500px, calc(100% - 32px)); padding: 0; }
dialog::backdrop { background: #0006; }
dialog header, dialog footer { display: flex; gap: 10px; align-items: center; padding: 14px 16px; }
dialog header { justify-content: space-between; border-bottom: 1px solid var(--border); }
dialog h3 { margin: 0; }
dialog p { margin: 0; padding: 16px; }
dialog footer { justify-content: flex-end; border-top: 1px solid var(--border); }
.dialog-close { background: transparent; border: 0; font-size: 24px; line-height: 1; }

@media (max-width: 1180px) {
  .quiz-layout { grid-template-columns: minmax(0, 1fr) 244px; }
  .question-grid { grid-template-columns: repeat(6, 30px); }
}
@media (max-width: 960px) {
  .site { margin-left: 0; }
  .drawer { box-shadow: 3px 0 9px #0002; }
}
@media (max-width: 700px) {
  .topbar { gap: 8px; padding-inline: 8px; }
  .topbar .top-menu:not(.language), .bell, .brand span, .language summary [data-icon] { display: none; }
  .brand { margin-right: 0; }
  .main { margin-inline: 10px; }
  .course-header, .quiz-panel, .quiz-nav { padding: 12px; }
  h1 { font-size: 27px; }
  .quiz-layout { grid-template-columns: minmax(0, 1fr); }
  .quiz-nav { grid-row: 1; position: static; }
  .question-grid { grid-template-columns: repeat(auto-fit, 30px); }
  .question { gap: 0; grid-template-columns: minmax(0, 1fr); }
  .question-info { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; }
  .question-info h2, .question-info p { margin: 0; }
  .question-info br { display: none; }
  .question-body { padding: 12px; }
  .activity-nav { padding-inline: 0; }
  .status-table th, .status-table td { padding: 8px 6px; }
}