/* Quiet Workbench is a presentation layer over the existing Learn/Practice
   routes. State, evaluation, sharing, and persistence remain in their owners. */
body.ls-learn-practice-shell {
  --wb-page: #fafbfc;
  --wb-surface: #f0f3f3;
  --wb-panel: #ffffff;
  --wb-ink: #263034;
  --wb-muted: #5d6d73;
  --wb-accent: #0f7569;
  --wb-accent-soft: #eaf5f1;
  --wb-line: #d5dfe1;
  --wb-quiet-line: #e6ebec;
  --wb-focus: #267dba;
  --wb-on-accent: #ffffff;
  --ls-overview-ink: var(--wb-ink);
  --ls-overview-muted: var(--wb-muted);
  --ls-overview-line: var(--wb-quiet-line);
  --ls-overview-hover: var(--wb-surface);
  --ls-overview-accent: var(--wb-accent);
  --ls-workspace-top: 1.5rem;
  --ls-workspace-edge: 2rem;
  --ls-workspace-rail-height: 3.375rem;
  --ls-workspace-control-size: 2.75rem;
}
html.ls-dark-mode body.ls-learn-practice-shell {
  --wb-page: #161b1d;
  --wb-surface: #222a2d;
  --wb-panel: #1b2224;
  --wb-ink: #edf2f3;
  --wb-muted: #b0bfc3;
  --wb-accent: #7bd1bf;
  --wb-accent-soft: #233d37;
  --wb-line: #3b464a;
  --wb-quiet-line: #2c3538;
  --wb-focus: #8bc9f4;
  --wb-on-accent: #152724;
  --ls-overview-ink: var(--wb-ink);
  --ls-overview-muted: var(--wb-muted);
  --ls-overview-line: var(--wb-quiet-line);
  --ls-overview-hover: var(--wb-surface);
  --ls-overview-accent: var(--wb-accent);
}
html:root body.ls-learn-practice-shell,
html:root body.ls-learn-practice-shell #app,
html:root body.ls-learn-practice-shell #app > div,
html:root body.ls-learn-practice-shell .ls-app-container {
  background: var(--wb-page) !important;
  color: var(--wb-ink) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-app-container {
  width: 100%;
  max-width: 82.5rem !important;
  padding-inline: 2rem !important;
  border: 0 !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-tool, .ls-practice-tool) {
  color: var(--wb-ink);
  font-family: Aptos, "Segoe UI", system-ui, sans-serif;
  letter-spacing: 0;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-page, .ls-practice-page) {
  width: 100%;
  max-width: none;
  padding: 1.5rem 0 3.5rem;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 0 0 2.25rem;
  padding: 0;
  background: transparent !important;
  color: var(--wb-ink) !important;
  border: 0 !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) h1 {
  max-width: 30ch;
  margin: 0;
  color: var(--wb-ink) !important;
  font-size: 2.25rem;
  line-height: 1.2;
  font-weight: 650;
  overflow-wrap: anywhere;
  text-wrap: initial;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) p {
  color: var(--wb-muted) !important;
  font-size: 1rem;
}
html:root body.ls-learn-practice-shell .ls-practice-heading .ls-workbench-context {
  margin: 0 0 .625rem;
  font-size: .75rem;
  color: var(--wb-accent) !important;
}

/* Fixed header dimensions: hover never participates in layout. */
html:root body.ls-learn-practice-shell .ls-product-switcher {
  margin-bottom: .5rem !important;
  grid-template-columns: repeat(2, 6.25rem) !important;
  border-color: var(--wb-quiet-line) !important;
  border-radius: 7px !important;
  background: var(--wb-surface) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-product-switcher > button:is([data-ls-learn-nav], [data-ls-practice-nav]) {
  border-color: transparent !important;
  border-radius: 5px !important;
  color: var(--wb-muted) !important;
  background: transparent !important;
  box-shadow: none !important;
  font-size: .9375rem !important;
  font-weight: 600 !important;
}
html:root body.ls-learn-practice-shell .ls-product-switcher > button[aria-current="page"]:is([data-ls-learn-nav], [data-ls-practice-nav]) {
  background: var(--wb-panel) !important;
  color: var(--wb-ink) !important;
  box-shadow: 0 1px 4px #0000000b !important;
}
html:root body.ls-learn-practice-shell .ls-product-switcher > button:hover:is([data-ls-learn-nav], [data-ls-practice-nav]) {
  color: var(--wb-ink) !important;
  background: var(--wb-panel) !important;
}
html:root body.ls-learn-practice-shell .ls-product-switcher > button > span { color: inherit !important; }
html:root body.ls-learn-practice-shell .ls-product-wordmark { width: 12.25rem !important; }
html:root body.ls-learn-practice-shell .ls-product-wordmark img { filter: none !important; }
html:root body.ls-learn-practice-shell .ls-product-utility-dock {
  background: transparent !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-product-utility-dock button:is([aria-label="Feedback"], [aria-label="Settings"]) {
  border: 1px solid transparent !important;
  border-radius: 5px !important;
  background: transparent !important;
  color: var(--wb-muted) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-product-utility-dock button:hover {
  background: var(--wb-surface) !important;
}
html:root body.ls-learn-practice-shell .ls-account-identity {
  margin: 0;
  min-height: 2rem;
  padding: 0 0 .75rem;
  border-bottom: 1px solid var(--wb-quiet-line);
  font-size: .75rem;
  color: var(--wb-ink);
}
html:root body.ls-learn-practice-shell .ls-account-state { color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-account-name {
  min-height: 2.75rem;
  padding: .5rem;
  margin-block: -.5rem;
  background: transparent !important;
  color: var(--wb-ink) !important;
  border-color: transparent !important;
}

/* The current topic is an open spread, not a decorative dashboard card. */
html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero) {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 23rem;
  align-items: center;
  gap: 3.75rem;
  min-height: 0;
  overflow: visible;
  padding: 0 0 2rem;
  border: 0 !important;
  border-bottom: 1px solid var(--wb-quiet-line) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero)::before { display: none; }
html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero):has(> figure[hidden]) {
  grid-template-columns: minmax(0, 1fr);
}
html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene)[hidden] { display: none !important; }
html:root body.ls-learn-practice-shell :is(.ls-practice-next-copy, .ls-learn-topic-copy) {
  width: 100%;
  min-width: 0;
  padding: .75rem 0;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-next-copy, .ls-learn-topic-copy) h2 {
  max-width: 24ch;
  font-size: 2rem;
  line-height: 1.25;
  font-weight: 650;
  text-wrap: initial;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-eyebrow, .ls-learn-eyebrow) {
  font-size: .75rem;
  font-weight: 600;
  text-transform: none;
  color: var(--wb-accent) !important;
  margin-bottom: .75rem;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-session-description, .ls-learn-topic-description) {
  max-width: 49ch;
  margin: .875rem 0 0;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--wb-muted) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene) {
  position: relative;
  inset: auto;
  width: 100%;
  height: 18rem;
  margin: 0;
  opacity: 1;
  overflow: hidden;
  border-radius: 7px;
}
html:root body.ls-learn-practice-shell .ls-learn-scene { height: 21.875rem; }
html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene) img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 22%;
  filter: none;
  opacity: 1;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene) figcaption {
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  padding: .75rem 1rem;
  background: #172427ec;
  color: #f2f6f5 !important;
  font-size: .75rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
html:root body.ls-learn-practice-shell .ls-practice-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.25rem;
  margin: 1.5rem 0;
}
html:root body.ls-learn-practice-shell .ls-practice-stat { font-size: .8125rem; font-weight: 400; }
html:root body.ls-learn-practice-shell .ls-practice-stat span { color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-stat-icon { color: var(--wb-accent); width: 1rem; height: 1rem; }
html:root body.ls-learn-practice-shell .ls-practice-stat-divider { display: none; }
html:root body.ls-learn-practice-shell :is(.ls-practice-session-actions, .ls-learn-heading-actions) {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .625rem;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-session-actions, .ls-learn-topic-actions) { margin-top: 1.75rem; }
html:root body.ls-learn-practice-shell .ls-learn-details { gap: .75rem; margin: 1.25rem 0; }
html:root body.ls-learn-practice-shell .ls-learn-detail {
  min-height: 1.5rem;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  padding: 0 .75rem 0 0;
  color: var(--wb-muted) !important;
  font-size: .8125rem;
  font-weight: 400;
}
html:root body.ls-learn-practice-shell .ls-learn-detail + .ls-learn-detail { border-left: 1px solid var(--wb-line) !important; padding-left: .75rem; }

/* Restrained controls; selected answers and semantic feedback keep their colors. */
html:root body.ls-learn-practice-shell :is(.ls-learn-action, .ls-practice-action, .ls-practice-back) {
  min-width: 0;
  min-height: 2.75rem;
  padding: .6875rem 1.125rem;
  border: 1px solid var(--wb-line) !important;
  border-radius: 5px !important;
  background: transparent !important;
  color: var(--wb-ink) !important;
  box-shadow: none !important;
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.5;
  transform: none !important;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-action, .ls-practice-action, .ls-practice-back) > span { color: inherit !important; }
html:root body.ls-learn-practice-shell :is(.ls-learn-action, .ls-practice-action, .ls-practice-back):hover:not(:disabled) {
  background: var(--wb-surface) !important;
  border-color: var(--wb-muted) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-primary-action, .ls-practice-primary-action) {
  background: var(--wb-accent) !important;
  border-color: var(--wb-accent) !important;
  color: var(--wb-on-accent) !important;
}
html:root body.ls-learn-practice-shell :is(#ls-learn-tool, #ls-practice-tool)
  :is(.ls-learn-primary-action, .ls-practice-primary-action),
html:root body.ls-learn-practice-shell :is(#ls-learn-tool, #ls-practice-tool)
  :is(.ls-learn-primary-action, .ls-practice-primary-action) > span {
  color: var(--wb-on-accent) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-primary-action, .ls-practice-primary-action):hover:not(:disabled) {
  background: color-mix(in srgb, var(--wb-accent) 88%, var(--wb-ink)) !important;
  border-color: var(--wb-accent) !important;
}
html:root body.ls-learn-practice-shell :is(button, a, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--wb-focus) !important;
  outline-offset: 3px;
}
html:root body.ls-learn-practice-shell .ls-practice-heading .ls-practice-history-actions {
  flex: 0 0 auto;
  margin: 0;
}

/* Tools are clickable rows with unboxed icons, beside the real review queue. */
html:root body.ls-learn-practice-shell .ls-practice-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 2.625rem;
  margin-top: 2rem;
}
html:root body.ls-learn-practice-shell .ls-practice-options > h2 {
  margin: 0 0 .625rem;
  font-size: 1.1875rem;
  line-height: 1.4;
  font-weight: 650;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell .ls-practice-utility-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 1.5rem;
  margin: 0;
}
html:root body.ls-learn-practice-shell .ls-practice-utility-card {
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr) 1rem;
  grid-template-rows: auto auto;
  align-content: start;
  align-items: center;
  column-gap: .8125rem;
  min-height: 0;
  padding: 1.25rem 0;
  border: 0 !important;
  border-bottom: 1px solid var(--wb-quiet-line) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}
html:root body.ls-learn-practice-shell .ls-practice-utility-card:hover { background: var(--wb-surface) !important; }
html:root body.ls-learn-practice-shell .ls-practice-utility-icon {
  grid-column: 1;
  grid-row: 1 / 3;
  align-self: start;
  width: 1.25rem;
  height: 1.5rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--wb-accent) !important;
}
html:root body.ls-learn-practice-shell .ls-practice-utility-icon svg { width: 1.25rem; height: 1.25rem; }
html:root body.ls-learn-practice-shell .ls-practice-utility-card h3 {
  grid-column: 2;
  margin: 0 0 .375rem;
  color: var(--wb-ink) !important;
  font-size: .9375rem;
  line-height: 1.4;
  font-weight: 600;
}
html:root body.ls-learn-practice-shell .ls-practice-utility-card p {
  grid-column: 2;
  max-width: 29ch;
  margin: 0;
  color: var(--wb-muted) !important;
  font-size: .8125rem;
  line-height: 1.6;
}
html:root body.ls-learn-practice-shell .ls-practice-card-arrow {
  position: static;
  grid-column: 3;
  grid-row: 1 / 3;
  color: var(--wb-muted) !important;
}
html:root body.ls-learn-practice-shell .ls-practice-card-arrow svg { width: 1rem; height: 1rem; }
html:root body.ls-learn-practice-shell .ls-practice-due-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-content: start;
  gap: 1.25rem;
  margin: 0;
  padding: 0 0 0 1.75rem;
  min-height: 0;
  border: 0 !important;
  border-left: 1px solid var(--wb-quiet-line) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-practice-due-icon { display: none; }
html:root body.ls-learn-practice-shell .ls-practice-due-copy h2 {
  font-size: 1.1875rem;
  line-height: 1.4;
  font-weight: 650;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell .ls-practice-due-copy p { margin-top: 1rem; font-size: .875rem; line-height: 1.65; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-due-count { min-width: 0; align-items: flex-end; font-size: .75rem; }
html:root body.ls-learn-practice-shell .ls-practice-due-count strong { color: var(--wb-accent) !important; font-size: 1.25rem; }
html:root body.ls-learn-practice-shell .ls-practice-due-count span { color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-due-row > button { grid-column: 1 / -1; justify-self: start; }

/* History uses the saved scope and timestamp to distinguish similar titles. */
html:root body.ls-learn-practice-shell .ls-practice-workspace { max-width: none; width: 100%; padding: 0 0 3rem; }
html:root body.ls-learn-practice-shell .ls-practice-workspace-header {
  padding: 0 0 1.75rem;
  background: transparent !important;
  border-color: var(--wb-quiet-line);
  color: var(--wb-ink) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-practice-workspace-header h1 { color: var(--wb-ink) !important; font-size: 2rem; font-weight: 650; }
html:root body.ls-learn-practice-shell .ls-practice-workspace-header > span { color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-workspace-header > p { display: none; }
html:root body.ls-learn-practice-shell .ls-practice-back { position: static; margin-bottom: 1.25rem; padding-inline: 0; border: 0 !important; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-test-history > article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem 2rem;
  padding: 1.5rem 0;
  border-color: var(--wb-quiet-line);
}
html:root body.ls-learn-practice-shell .ls-practice-history-copy h2 { margin: 0 0 .5rem; font-size: 1.25rem; font-weight: 650; color: var(--wb-ink) !important; }
html:root body.ls-learn-practice-shell .ls-practice-history-scope { margin: .25rem 0; font-size: .9375rem; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-history-meta { margin: .5rem 0 0; font-size: .75rem; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-history-score { display: grid; gap: .25rem; text-align: right; }
html:root body.ls-learn-practice-shell .ls-practice-history-score strong { font-size: 1.5rem; font-weight: 600; color: var(--wb-ink); }
html:root body.ls-learn-practice-shell .ls-practice-history-score span { font-size: .8125rem; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-practice-history-record > .ls-practice-history-actions { grid-column: 1 / -1; margin: 0; }
html:root body.ls-learn-practice-shell .ls-practice-teacher-actions { display: flex; flex-wrap: wrap; gap: .5rem; }

/* Resume stays one real topic switch, with a portrait cover and open copy. */
html:root body.ls-learn-practice-shell .ls-practice-interactive { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--wb-quiet-line); }
html:root body.ls-learn-practice-shell .ls-practice-interactive h2 { margin: 0 0 1.25rem; font-size: 1.5rem; }
html:root body.ls-learn-practice-shell .ls-practice-game-card { display: block; width: min(100%, 17.5rem); overflow: hidden; border: 1px solid var(--wb-line); border-radius: 7px; text-decoration: none; color: var(--wb-ink); background: var(--wb-panel); }
html:root body.ls-learn-practice-shell .ls-practice-game-card > img { display: block; width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: contain; filter: none; }
html:root body.ls-learn-practice-shell .ls-practice-game-card > span { display: grid; grid-template-columns: 1fr auto; padding: 1rem; gap: .3rem 1rem; }
html:root body.ls-learn-practice-shell .ls-practice-game-card strong { font-size: 1.125rem; }
html:root body.ls-learn-practice-shell .ls-practice-game-card > span > span { grid-column: 1; font-size: .875rem; color: var(--wb-muted); }
html:root body.ls-learn-practice-shell .ls-practice-game-card svg { width: 22px; height: 22px; grid-column: 2; grid-row: 1 / 3; align-self: center; }
html:root body.ls-learn-practice-shell .ls-practice-game-card:hover { border-color: var(--wb-accent); }
html:root body.ls-learn-practice-shell .ls-practice-game-card:focus-visible { outline: 3px solid var(--wb-focus); outline-offset: 4px; }
html:root body.ls-learn-practice-shell .ls-learn-resume { margin-top: 2rem; padding-top: 0; border: 0; }
html:root body.ls-learn-practice-shell .ls-learn-interactive {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--wb-quiet-line);
}
html:root body.ls-learn-practice-shell .ls-learn-resume[hidden] + .ls-learn-interactive { border-top: 0; padding-top: 0; }
html:root body.ls-learn-practice-shell .ls-learn-interactive h2 { margin: 0 0 1.5rem; font-size: 1.5rem; font-weight: 650; color: var(--wb-ink); }
html:root body.ls-learn-practice-shell .ls-learn-card-carousel { display: grid; grid-auto-flow: column; grid-auto-columns: min(17.5rem, 80%); grid-template-columns: none; gap: 20px; align-items: stretch; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x proximity; scroll-padding-inline: 6px; padding: 6px 6px 18px; margin-inline: -6px; max-width: calc(100% + 12px); }
html:root body.ls-learn-practice-shell .ls-learn-card-carousel > :is(a, button) { scroll-snap-align: start; min-width: 0; }
html:root body.ls-learn-practice-shell .ls-learn-card-carousel:focus-visible { outline: 2px solid var(--wb-focus); outline-offset: 3px; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 1rem; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-header h2 { margin: 0; font-size: 1.5rem; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls { display: flex; gap: 8px; flex: none; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls[hidden] { display: none; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls button { display: grid; place-items: center; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--wb-line); border-radius: 5px; background: var(--wb-panel); color: var(--wb-ink); cursor: pointer; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls button svg { width: 20px; height: 20px; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls [data-carousel-direction="-1"] svg { transform: rotate(180deg); }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls button:disabled { opacity: .35; cursor: default; }
html:root body.ls-learn-practice-shell .ls-learn-shelf-controls button:not(:disabled):hover { background: var(--wb-surface); }
html:root body.ls-learn-practice-shell .ls-learn-interactive-cover { position: relative; display: block; width: min(100%, 18.75rem); aspect-ratio: 2 / 3; overflow: hidden; border: 1px solid var(--wb-quiet-line); border-radius: 7px; box-shadow: 0 5px 18px #142d3510; transition: border-color .2s, box-shadow .2s; }
html:root body.ls-learn-practice-shell .ls-learn-interactive-cover:hover { border-color: var(--wb-accent); box-shadow: 0 9px 26px #142d3520; }
html:root body.ls-learn-practice-shell .ls-learn-interactive-cover > img { display: block; width: 100%; height: 100%; object-fit: contain; filter: none; }
html:root body.ls-learn-practice-shell .ls-learn-interactive-cover-arrow { position: absolute; bottom: 14px; right: 14px; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 5px; background: var(--wb-accent); color: var(--wb-on-accent); }
html:root body.ls-learn-practice-shell .ls-learn-interactive-cover-arrow svg { width: 23px; height: 23px; }
html:root body.ls-learn-practice-shell .ls-learn-interactive a:focus-visible { outline: 3px solid var(--wb-focus); outline-offset: 4px; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  width: 100%;
  min-height: 26.25rem;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--wb-quiet-line) !important;
  background: var(--wb-panel) !important;
  box-shadow: 0 5px 18px #142d3510 !important;
  transform: none !important;
}
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-card::before { display: none; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-cover { position: static; z-index: auto; width: 100%; height: 10.5rem; object-fit: cover; object-position: center 30%; border-radius: 0; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-level { align-self: start; padding: 0; margin: 1rem 1rem .4rem; background: transparent; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-copy { display: flex; flex-direction: column; flex: 1; padding: 0 1rem 1rem; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-title { font-size: 1.125rem; line-height: 1.4; color: var(--wb-ink) !important; }
html:root body.ls-learn-practice-shell #ls-learn-tool :is(.ls-learn-resume-discipline, .ls-learn-resume-unit, .ls-learn-resume-progress) { color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-progress { margin-top: .5rem; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-copy > .ls-learn-resume-action { justify-content: space-between; padding-top: 1rem; margin-top: auto; border: 0; }
html:root body.ls-learn-practice-shell #ls-learn-tool .ls-learn-resume-action span { color: var(--wb-accent) !important; }

/* Carry the neutral material into real lesson, assessment and settings surfaces
   without overriding correctness, error, selection, or disabled states. */
html:root body.ls-learn-practice-shell .ls-learn-class-shell {
  --learn-border: var(--wb-quiet-line);
  --learn-muted: var(--wb-muted);
  --learn-paper: var(--wb-panel);
  --learn-teal: var(--wb-accent);
  color: var(--wb-ink);
}
html:root body.ls-learn-practice-shell :is(.ls-learn-class-toolbar, .ls-learn-class-article,
  .ls-learn-support-section, .ls-learn-builder-card, .ls-learn-adaptive-card,
  .ls-practice-question, .ls-practice-review-question, .ls-practice-config-section,
  .ls-practice-empty, .ls-practice-error, .ls-practice-loading, .ls-settings-dialog,
  .ls-settings-close-rail, .ls-signin-dialog) {
  border-color: var(--wb-quiet-line) !important;
  background: var(--wb-panel) !important;
  color: var(--wb-ink) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-learn-article-heading { background: transparent !important; border-color: var(--wb-quiet-line); }
html:root body.ls-learn-practice-shell .ls-learn-class-article {
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-story-section, .ls-learn-written-check, .ls-learn-lesson-complete) {
  border-color: var(--wb-quiet-line) !important;
  background: transparent !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-learn-article-heading h1 {
  font-size: 2rem;
  line-height: 1.25;
  font-weight: 650;
}
html:root body.ls-learn-practice-shell .ls-learn-goals h2 { letter-spacing: 0; }
html:root body.ls-learn-practice-shell :is(.ls-learn-map-item, .ls-learn-tool-link) {
  border: 0 !important;
  background: transparent !important;
  color: var(--wb-muted) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell .ls-learn-map-item[aria-current="location"],
html:root body.ls-learn-practice-shell :is(.ls-learn-map-item, .ls-learn-tool-link):hover {
  background: var(--wb-surface) !important;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell .ls-learn-tool-link > span:first-child {
  background: transparent !important;
  color: var(--wb-accent) !important;
  border-radius: 0;
}
html:root body.ls-learn-practice-shell .ls-learn-class-exit {
  min-height: 2.75rem;
  background: transparent !important;
  border-color: var(--wb-line) !important;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-learn-notes, .ls-learn-written-response) {
  background: var(--wb-page) !important;
  border-color: var(--wb-line) !important;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-question, .ls-practice-review-question) > header {
  background: transparent !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-review-summary, .ls-practice-course-history-summary) {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--wb-quiet-line);
}
html:root body.ls-learn-practice-shell :is(.ls-practice-review-summary, .ls-practice-course-history-summary) > div {
  padding: 0;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-review-summary, .ls-practice-course-history-summary) span { color: var(--wb-muted) !important; font-size: .75rem; text-transform: none; }
html:root body.ls-learn-practice-shell :is(.ls-practice-review-summary, .ls-practice-course-history-summary) strong { color: var(--wb-ink) !important; }
html:root body.ls-learn-practice-shell .ls-practice-review-topics span {
  background: var(--wb-accent-soft);
  border-color: var(--wb-quiet-line);
  color: var(--wb-accent) !important;
  font-weight: 500;
}
html:root body.ls-learn-practice-shell .ls-practice-review-question dl > div {
  padding: .5rem 0;
  background: transparent !important;
  border: 0 !important;
}
html:root body.ls-learn-practice-shell :is(.ls-practice-review-number, .ls-practice-choice-letter) {
  background: var(--wb-surface);
  border-color: var(--wb-line);
  color: var(--wb-muted) !important;
}
html:root body.ls-learn-practice-shell .ls-practice-choice:not(.is-selected):not(.is-correct):not(.is-wrong) {
  background: var(--wb-surface);
  border-color: var(--wb-line);
  color: var(--wb-ink);
}
html:root body.ls-learn-practice-shell :is(.ls-practice-mistake-list, .ls-practice-review-queue) article {
  background: transparent !important;
  border: 0 !important;
  border-bottom: 1px solid var(--wb-quiet-line) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  padding-inline: 0;
}
html:root body.ls-learn-practice-shell .ls-settings-nav-button { background: transparent !important; border-color: transparent !important; color: var(--wb-muted) !important; }
html:root body.ls-learn-practice-shell .ls-settings-nav-button:is(.is-active, :hover) { background: var(--wb-surface) !important; color: var(--wb-ink) !important; }
html:root body.ls-learn-practice-shell :is(.ls-profile-settings, .ls-signin-dialog, .ls-account-identity) {
  --profile-ink: var(--wb-ink);
  --profile-muted: var(--wb-muted);
  --profile-paper: var(--wb-panel);
  --profile-line: var(--wb-line);
}
html:root body.ls-learn-practice-shell .ls-share-modal {
  --ls-ui-ink: var(--wb-ink);
  --ls-ui-muted: var(--wb-muted);
  --ls-ui-paper: var(--wb-panel);
  --ls-ui-surface: var(--wb-surface);
  --ls-ui-line: var(--wb-line);
  --ls-ui-cyan: var(--wb-accent);
}
html:root body.ls-learn-practice-shell .ls-share-modal-panel {
  background: var(--wb-panel) !important;
  border-color: var(--wb-line) !important;
  box-shadow: none !important;
}
html:root body.ls-learn-practice-shell :is(.ls-share-input, .ls-profile-edit input, .ls-signin-dialog input:not([type="checkbox"])) {
  background: var(--wb-page) !important;
  border-color: var(--wb-line) !important;
  color: var(--wb-ink) !important;
}
html:root body.ls-learn-practice-shell .ls-analytics-control { margin-top: 1rem; padding: .75rem 1rem .25rem; }
html:root body.ls-learn-practice-shell .ls-analytics-control button {
  min-height: 2.75rem;
  background: transparent !important;
  color: var(--wb-muted) !important;
  font: inherit;
  font-size: .75rem;
}
html:root body.ls-learn-practice-shell .ls-global-privacy-link {
  position: static !important;
  display: block;
  width: max-content;
  max-width: calc(100% - 2rem);
  min-height: 2.75rem;
  margin: 0 auto 1rem;
  padding: .5rem;
  border: 0 !important;
  border-radius: 0;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--wb-muted) !important;
  font-size: .75rem;
  line-height: 1.75;
  text-decoration: underline;
  text-underline-offset: .2em;
}

@media (min-width: 1100px) {
  html:root body.ls-learn-practice-shell .ls-practice-history-record { grid-template-columns: minmax(0, 1fr) auto auto; }
  html:root body.ls-learn-practice-shell .ls-practice-history-record > .ls-practice-history-actions { grid-column: 3; }
  html:root body.ls-learn-practice-shell .ls-practice-history-record .ls-practice-action { font-size: .8125rem; padding-inline: .875rem; }
}
@media (max-width: 1100px) {
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero) { grid-template-columns: minmax(0, 1fr) 18rem; gap: 2rem; }
  html:root body.ls-learn-practice-shell .ls-product-wordmark { width: 10rem !important; }
}
@media (max-width: 800px) {
  html:root body.ls-learn-practice-shell .ls-app-container { padding-inline: 1.5rem !important; }
  body.ls-learn-practice-shell { --ls-workspace-edge: 1.5rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-heading, .ls-learn-heading) { align-items: flex-start; flex-wrap: wrap; gap: 1.25rem; }
  html:root body.ls-learn-practice-shell .ls-practice-columns { grid-template-columns: 1fr; }
  html:root body.ls-learn-practice-shell .ls-practice-due-row { padding: 1.5rem 0 0; border-left: 0 !important; border-top: 1px solid var(--wb-quiet-line) !important; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero) { grid-template-columns: minmax(0, 1fr) 14rem; gap: 1.5rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-copy, .ls-learn-topic-copy) h2 { font-size: 1.75rem; }
}
@media (max-width: 600px) {
  body.ls-learn-practice-shell { --ls-workspace-top: max(1rem, env(safe-area-inset-top)); --ls-workspace-edge: 1.25rem; }
  html:root body.ls-learn-practice-shell .ls-app-container { padding-inline: 1.25rem !important; }
  html:root body.ls-learn-practice-shell .ls-product-wordmark { width: 2.75rem !important; }
  html:root body.ls-learn-practice-shell .ls-product-wordmark picture { justify-content: center; }
  html:root body.ls-learn-practice-shell .ls-product-wordmark img { width: 2rem !important; height: 2rem !important; }
  html:root body.ls-learn-practice-shell .ls-product-switcher { grid-template-columns: repeat(2, 3.75rem) !important; left: -1.5rem !important; }
  html:root body.ls-learn-practice-shell .ls-product-switcher > button:is([data-ls-learn-nav], [data-ls-practice-nav]) { font-size: .8125rem !important; }
  html:root body.ls-learn-practice-shell :is(.ls-learn-page, .ls-practice-page) { padding-top: 1.25rem; }
  html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) { margin-bottom: 1.75rem; }
  html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) h1 { font-size: 1.875rem; }
  html:root body.ls-learn-practice-shell :is(.ls-learn-heading, .ls-practice-heading) p { font-size: .875rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-session, .ls-learn-topic-hero) { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-bottom: 1.5rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-copy, .ls-learn-topic-copy) { padding: 0; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-next-copy, .ls-learn-topic-copy) h2 { font-size: 1.625rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-session-description, .ls-learn-topic-description) { font-size: .9375rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene) { display: block !important; height: 10rem; }
  html:root body.ls-learn-practice-shell :is(.ls-practice-scene, .ls-learn-scene) img { object-position: 50% 29%; }
  html:root body.ls-learn-practice-shell .ls-practice-stats { gap: .75rem 1rem; }
  html:root body.ls-learn-practice-shell .ls-practice-utility-grid { grid-template-columns: 1fr; }
  html:root body.ls-learn-practice-shell :is(.ls-learn-action, .ls-practice-action) { font-size: .8125rem; padding-inline: .875rem; }
  html:root body.ls-learn-practice-shell .ls-practice-history-actions { gap: .5rem; }
  html:root body.ls-learn-practice-shell .ls-practice-history-record > .ls-practice-history-actions { align-items: stretch; }
  html:root body.ls-learn-practice-shell .ls-practice-history-record > .ls-practice-history-actions > button { width: 100%; }
  html:root body.ls-learn-practice-shell .ls-practice-history-scope { font-size: .875rem; }
  html:root body.ls-learn-practice-shell .ls-learn-shelf-header h2 { font-size: 1.25rem; }
}
@media (max-width: 359px) {
  body.ls-learn-practice-shell { --ls-workspace-edge: 1rem; }
  html:root body.ls-learn-practice-shell .ls-app-container { padding-inline: 1rem !important; }
  html:root body.ls-learn-practice-shell .ls-product-switcher { grid-template-columns: repeat(2, 3.125rem) !important; }
}
@media (prefers-reduced-motion: reduce) {
  html:root body.ls-learn-practice-shell :is(button, a) { transition: none !important; }
}