.quiz-page {
  --quiz-border: #E5E7EB;
  --quiz-border-strong: #666666;
  --quiz-btn-brand: #8a9ba3;
  --quiz-btn-brand-hover: #6b7f8a;
  --quiz-btn-secondary-bg: #eef1f3;
  --quiz-surface: #ffffff;
  --quiz-page-bg: #f7f9fa;
  --quiz-choice-border: #9CA3AF;
  --quiz-choice-border-hover: #6B7280;
  --quiz-choice-bg: #ffffff;
  --quiz-choice-bg-hover: #F3F4F6;
  --quiz-choice-bg-selected: #eef1f3;
  --quiz-footer-bg: #F3F4F6;
  --quiz-text-dark: #111827;
  --quiz-workspace-gap: 24px;

  min-height: calc(100vh - var(--header-height));
  background: var(--quiz-page-bg);
  padding: 1.25rem var(--space-block) 1rem;
}

.quiz-taking .site-header {
  border-bottom-color: var(--quiz-border);
}

.quiz-shell {
  max-width: 780px;
  margin: 0 auto;
}

/* —— Exam surface card —— */
.quiz-card {
  background: var(--quiz-surface);
  border: 1px solid var(--quiz-border);
  border-radius: 8px;
  padding: 1.5rem 1.75rem 0;
  box-shadow: none;
}

.quiz-card.is-panel-mode {
  padding: 1.5rem 1.75rem 1.5rem;
}

.quiz-card.is-results {
  text-align: center;
}

/* —— Workspace header (title + progress) —— */
.quiz-workspace-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: var(--quiz-workspace-gap);
}

.quiz-workspace-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--quiz-text-dark);
}

.quiz-workspace-progress {
  flex: 0 1 180px;
  width: 100%;
  max-width: 200px;
  min-width: 100px;
  margin-left: auto;
}

.quiz-workspace-progress-text {
  display: block;
  margin-bottom: 0.35rem;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-align: right;
  white-space: nowrap;
}

.quiz-progress-track {
  height: 4px;
  background: var(--quiz-border);
  border-radius: 2px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--quiz-btn-brand);
  border-radius: 2px;
  transition: width var(--transition-soft);
}

.quiz-workspace-body {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.quiz-question-block {
  margin-bottom: 0;
  flex: 1;
  min-height: 0;
}

.quiz-question-heading {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

.quiz-crossout-hint {
  display: none;
}

.quiz-crossout-icon {
  width: 1.375rem;
  height: 1.375rem;
  display: block;
}

/* —— Question text —— */
.quiz-question-text {
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--quiz-text-dark);
  margin: 0 0 1.25rem;
}

.quiz-question-text .katex {
  font-size: 1em;
}

/* —— Answer choice cards —— */
.quiz-choices {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
}

.quiz-choice-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 16px;
  margin: 0;
  border: 1px solid var(--quiz-choice-border);
  border-radius: 8px;
  background: var(--quiz-choice-bg);
  box-shadow: none;
  transition:
    background-color var(--transition-soft),
    border-color var(--transition-soft);
}

.quiz-choice-row:hover:not(.is-crossed-off) {
  background: var(--quiz-choice-bg-hover);
  border-color: var(--quiz-choice-border-hover);
}

.quiz-choice-row:has(input:checked):not(.is-crossed-off) {
  background: var(--quiz-choice-bg-selected);
  border-color: var(--quiz-btn-brand);
}

.quiz-choice {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-width: 0;
  min-height: 0;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
}

.quiz-choice-row.is-crossed-off {
  background: #F9FAFB;
  border-color: var(--quiz-choice-border);
}

.quiz-choice-row.is-crossed-off .quiz-choice {
  cursor: default;
}

.quiz-choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.quiz-choice-letter {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.625rem;
  height: 1.625rem;
  border: 1.5px solid #9CA3AF;
  border-radius: 50%;
  background: var(--quiz-surface);
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  color: var(--quiz-text-dark);
  transition:
    color var(--transition-soft),
    border-color var(--transition-soft),
    background-color var(--transition-soft);
}

.quiz-choice-row:has(input:checked):not(.is-crossed-off) .quiz-choice-letter {
  border-color: var(--quiz-btn-brand);
  background: var(--quiz-btn-brand);
  color: var(--quiz-surface);
}

.quiz-choice-content {
  flex: 1;
  min-width: 0;
}

.quiz-choice-label {
  display: block;
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--quiz-text-dark);
}

.quiz-choice-label .katex {
  font-size: 1em;
}

.quiz-choice-row.is-crossed-off .quiz-choice {
  position: relative;
}

.quiz-choice-row.is-crossed-off .quiz-choice::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  background: #D1D5DB;
  pointer-events: none;
  z-index: 1;
}

.quiz-choice-row.is-crossed-off .quiz-choice-letter,
.quiz-choice-row.is-crossed-off .quiz-choice-label,
.quiz-choice-row.is-crossed-off .quiz-choice-label .katex {
  color: #9CA3AF;
  border-color: #D1D5DB;
}

.quiz-choice-row.is-crossed-off input {
  pointer-events: none;
}

/* —— Eliminate (cross-out) control —— */
.quiz-eliminate-btn {
  flex-shrink: 0;
  align-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  min-height: 0;
  margin-left: auto;
  padding: 0.35rem;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: #374151;
  opacity: 0.7;
  cursor: pointer;
  transition:
    opacity var(--transition-soft),
    color var(--transition-soft),
    background-color var(--transition-soft);
}

.quiz-eliminate-btn .quiz-crossout-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.quiz-eliminate-btn:hover {
  opacity: 1;
  background: var(--quiz-choice-bg-hover);
  color: #111827;
}

.quiz-eliminate-btn:focus-visible {
  opacity: 1;
  outline: 2px solid var(--quiz-btn-brand);
  outline-offset: 2px;
}

.quiz-eliminate-btn.is-undo {
  margin-left: auto;
  padding: 0.25rem 0.5rem;
  opacity: 1;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  color: #374151;
}

.quiz-eliminate-btn.is-undo:hover {
  color: var(--quiz-btn-brand);
  background: var(--quiz-choice-bg-hover);
}

/* —— Footer actions bar —— */
.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.75rem;
  margin: 1.25rem -1.75rem 0;
  border-top: 1px solid var(--quiz-border);
  background: var(--quiz-footer-bg);
  border-radius: 0 0 8px 8px;
}

.quiz-nav-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}

.quiz-btn {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  box-shadow: none;
  transition:
    background-color var(--transition-soft),
    border-color var(--transition-soft),
    color var(--transition-soft);
}

.quiz-btn--nav {
  min-width: 8rem;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 0.9375rem;
  background: var(--quiz-surface);
  border-color: var(--quiz-choice-border);
  color: var(--quiz-text-dark);
}

.quiz-btn--nav:hover:not(:disabled) {
  background: var(--quiz-choice-bg-hover);
  border-color: var(--quiz-choice-border-hover);
}

.quiz-btn--secondary {
  background: var(--quiz-surface);
  border-color: var(--quiz-border);
  color: var(--quiz-text-dark);
}

.quiz-btn--secondary:hover:not(:disabled) {
  background: var(--quiz-choice-bg-hover);
  border-color: var(--quiz-choice-border-hover);
  color: var(--quiz-text-dark);
}

.quiz-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.quiz-btn--primary {
  background: var(--quiz-btn-brand);
  border-color: var(--quiz-btn-brand);
  color: var(--quiz-surface);
}

.quiz-btn--primary:hover:not(:disabled) {
  background: var(--quiz-btn-brand-hover);
  border-color: var(--quiz-btn-brand-hover);
  color: var(--quiz-surface);
}

.quiz-btn--submit {
  flex-shrink: 0;
  min-width: 8rem;
  padding: 0.75rem 2rem;
  font-size: 0.9375rem;
}

.quiz-btn:focus-visible {
  outline: 2px solid var(--quiz-btn-brand);
  outline-offset: 2px;
}

/* —— Confirmation modal —— */
.quiz-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
}

.quiz-confirm-overlay[hidden] {
  display: none;
}

.quiz-confirm-modal {
  width: 90%;
  max-width: 420px;
  background: var(--quiz-surface);
  border: 1px solid var(--quiz-border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: none;
}

.quiz-confirm-text {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--quiz-text-dark);
  margin: 0 0 1.25rem;
}

.quiz-confirm-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

/* —— Results panel —— */
.quiz-results-title {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--quiz-text-dark);
  margin-bottom: 0.75rem;
}

.quiz-results-score {
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--quiz-text-dark);
  margin-bottom: 0.5rem;
}

.quiz-results-detail {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.quiz-error {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.9375rem;
  color: var(--quiz-text-dark);
  line-height: 1.5;
}

.quiz-error a {
  color: var(--quiz-text-dark);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--quiz-btn-brand);
}

/* —— Review summary dashboard —— */
.quiz-summary-title {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--quiz-text-dark);
  margin-bottom: 0.5rem;
}

.quiz-summary-intro {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.quiz-summary-table-wrap {
  border: 1px solid var(--quiz-border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.quiz-summary-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.875rem;
}

.quiz-summary-table th,
.quiz-summary-table td {
  border-bottom: 1px solid var(--quiz-border);
  padding: 0.625rem 0.875rem;
  text-align: left;
  vertical-align: middle;
}

.quiz-summary-table th {
  font-weight: 600;
  color: var(--quiz-text-dark);
  background: var(--quiz-footer-bg);
}

.quiz-summary-table tbody tr:last-child td {
  border-bottom: none;
}

.quiz-summary-table tbody tr {
  background: var(--quiz-surface);
}

.quiz-summary-row {
  cursor: pointer;
  transition: background-color var(--transition-soft);
}

.quiz-summary-row:hover,
.quiz-summary-row:focus-visible {
  background: var(--quiz-choice-bg-hover);
  outline: none;
}

.quiz-summary-row:focus-visible {
  outline: 2px solid var(--quiz-btn-brand);
  outline-offset: -2px;
}

.quiz-summary-num {
  font-weight: 600;
  color: var(--quiz-text-dark);
  width: 40%;
}

.quiz-summary-status-cell {
  width: 60%;
}

.quiz-summary-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.375rem;
  height: 1.375rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--quiz-surface);
  border-radius: 4px;
}

.quiz-summary-status--correct {
  background: #2d6a4f;
}

.quiz-summary-status--incorrect {
  background: #9b2226;
}

.quiz-summary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* —— Review question mode —— */
.quiz-review-toolbar {
  margin-bottom: var(--quiz-workspace-gap);
}

#quiz-exam-panel {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height) - 4rem);
}

#quiz-exam-panel.is-review-mode .quiz-eliminate-btn {
  display: none;
}

.quiz-choices--review {
  gap: 12px;
}

.quiz-choices--review .quiz-choice-row {
  padding: 16px;
  border: 1px solid var(--quiz-choice-border);
  border-radius: 8px;
  background: var(--quiz-choice-bg);
}

.quiz-choice--review {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: default;
}

.quiz-choices--review .quiz-choice-row.is-review-correct {
  background: #ECFDF5;
  border-color: #6EE7B7;
}

.quiz-choices--review .quiz-choice-row.is-review-incorrect {
  background: #FEF2F2;
  border-color: #FECACA;
}

.quiz-choice.is-review-highlight-correct,
.quiz-choice.is-review-highlight-incorrect {
  border: none;
  padding: 0;
  background: transparent;
}

.quiz-review-tag {
  flex-shrink: 0;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border: 1px solid transparent;
  border-radius: 4px;
}

.quiz-review-tag--correct {
  color: #065F46;
  border-color: #6EE7B7;
  background: #D1FAE5;
}

.quiz-review-tag--incorrect {
  color: #991B1B;
  border-color: #FECACA;
  background: #FEE2E2;
}

.quiz-review-note {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--quiz-border);
  border-radius: 6px;
  background: var(--quiz-footer-bg);
}

@media (max-width: 768px) {
  .quiz-page {
    padding: 0.75rem 1rem;
  }

  .quiz-card {
    padding: 1.25rem 1rem 0;
    border-radius: 6px;
  }

  .quiz-card.is-panel-mode {
    padding: 1.25rem 1rem 1.25rem;
  }

  .quiz-workspace-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
  }

  .quiz-workspace-progress {
    flex: none;
    max-width: none;
  }

  .quiz-workspace-progress-text {
    text-align: left;
  }

  .quiz-question-text {
    font-size: 1.25rem;
    margin-bottom: 1rem;
  }

  .quiz-choice-label {
    font-size: 0.9375rem;
  }

  .quiz-choice-row {
    padding: 14px;
  }

  .quiz-actions {
    margin: 1rem -1rem 0;
    padding: 0.875rem 1rem;
    border-radius: 0 0 6px 6px;
  }

  .quiz-nav-group {
    gap: 0.75rem;
  }

  .quiz-btn--nav,
  .quiz-btn--submit {
    min-width: 0;
    flex: 1 1 auto;
    padding: 0.75rem 1rem;
  }

  .quiz-summary-actions {
    flex-direction: column;
  }

  .quiz-summary-actions .quiz-btn {
    width: 100%;
  }
}

@media (min-width: 1440px) {
  .quiz-page {
    padding: clamp(1.4rem, 1rem + 0.55vw, 2rem) clamp(2rem, 1.2rem + 1.1vw, 3rem)
      clamp(1.25rem, 0.95rem + 0.4vw, 1.65rem);
  }

  .quiz-shell {
    width: min(90%, 820px);
    max-width: 820px;
    margin: 0 auto;
  }

  .quiz-card {
    border-radius: clamp(10px, 8px + 0.2vw, 14px);
    padding: clamp(2.1rem, 1.5rem + 0.75vw, 2.9rem) clamp(2.35rem, 1.75rem + 0.7vw, 3.1rem) 0;
  }

  .quiz-card.is-panel-mode {
    padding: clamp(2.1rem, 1.5rem + 0.75vw, 2.9rem) clamp(2.35rem, 1.75rem + 0.7vw, 3.1rem)
      clamp(2rem, 1.45rem + 0.6vw, 2.65rem);
  }

  .quiz-workspace-header {
    gap: clamp(1.4rem, 1.05rem + 0.35vw, 1.8rem);
    margin-bottom: clamp(1.95rem, 1.4rem + 0.55vw, 2.55rem);
  }

  .quiz-workspace-title {
    font-size: clamp(1.08rem, 0.95rem + 0.16vw, 1.22rem);
  }

  .quiz-workspace-progress {
    flex-basis: clamp(220px, 15vw, 300px);
    max-width: clamp(240px, 16vw, 320px);
  }

  .quiz-workspace-progress-text {
    font-size: clamp(0.8rem, 0.72rem + 0.1vw, 0.9rem);
  }

  .quiz-progress-track {
    height: clamp(5px, 4px + 0.08vw, 6px);
  }

  .quiz-question-text {
    font-size: clamp(1.58rem, 1.28rem + 0.38vw, 1.95rem);
    margin-bottom: clamp(1.75rem, 1.25rem + 0.55vw, 2.4rem);
  }

  .quiz-question-block {
    margin-bottom: clamp(0.8rem, 0.5rem + 0.45vw, 1.4rem);
  }

  .quiz-question-heading {
    font-size: clamp(0.95rem, 0.82rem + 0.12vw, 1.08rem);
    margin-bottom: clamp(0.78rem, 0.62rem + 0.14vw, 0.95rem);
  }

  .quiz-choices,
  .quiz-choices--review {
    gap: clamp(18px, 12px + 0.4vw, 26px);
  }

  .quiz-choice-row,
  .quiz-choices--review .quiz-choice-row {
    gap: clamp(1rem, 0.78rem + 0.2vw, 1.25rem);
    padding: clamp(20px, 15px + 0.42vw, 28px);
    border-radius: clamp(10px, 8px + 0.15vw, 12px);
    margin-bottom: clamp(0.15rem, 0.05rem + 0.12vw, 0.35rem);
  }

  .quiz-choice {
    gap: clamp(0.95rem, 0.78rem + 0.2vw, 1.15rem);
  }

  .quiz-choice-letter {
    width: clamp(1.75rem, 1.55rem + 0.24vw, 2rem);
    height: clamp(1.75rem, 1.55rem + 0.24vw, 2rem);
    font-size: clamp(0.86rem, 0.76rem + 0.12vw, 0.98rem);
  }

  .quiz-choice-label {
    font-size: clamp(1.15rem, 1rem + 0.22vw, 1.4rem);
  }

  .quiz-eliminate-btn {
    padding: clamp(0.4rem, 0.34rem + 0.08vw, 0.5rem);
  }

  .quiz-eliminate-btn .quiz-crossout-icon {
    width: clamp(1.32rem, 1.2rem + 0.12vw, 1.44rem);
    height: clamp(1.32rem, 1.2rem + 0.12vw, 1.44rem);
  }

  .quiz-actions {
    gap: clamp(1.15rem, 0.9rem + 0.28vw, 1.5rem);
    padding: clamp(1.25rem, 0.95rem + 0.35vw, 1.65rem)
      clamp(2.35rem, 1.8rem + 0.7vw, 3.1rem);
    margin: clamp(1.85rem, 1.35rem + 0.55vw, 2.5rem)
      clamp(-2.8rem, -1.7rem - 0.65vw, -2.25rem) 0;
    border-radius: 0 0 clamp(10px, 8px + 0.2vw, 14px) clamp(10px, 8px + 0.2vw, 14px);
  }

  .quiz-nav-group {
    gap: clamp(1.2rem, 0.95rem + 0.28vw, 1.45rem);
  }

  .quiz-btn {
    font-size: clamp(1rem, 0.86rem + 0.16vw, 1.2rem);
    min-height: clamp(3rem, 2.5rem + 0.45vw, 3.6rem);
    padding: clamp(0.9rem, 0.68rem + 0.22vw, 1.15rem) clamp(1.55rem, 1.2rem + 0.42vw, 2.05rem);
    border-radius: clamp(7px, 6px + 0.08vw, 8px);
  }

  .quiz-btn--nav,
  .quiz-btn--submit {
    min-width: clamp(10rem, 8.8rem + 0.9vw, 11.2rem);
    min-height: clamp(3.1rem, 2.6rem + 0.55vw, 3.85rem);
    padding: clamp(1rem, 0.8rem + 0.2vw, 1.25rem) clamp(2.35rem, 1.9rem + 0.5vw, 2.95rem);
    font-size: clamp(1.08rem, 0.95rem + 0.14vw, 1.25rem);
  }

  #quiz-exam-panel {
    min-height: auto;
  }

  .quiz-results-title,
  .quiz-summary-title {
    font-size: clamp(1.35rem, 1.14rem + 0.24vw, 1.58rem);
  }

  .quiz-results-score {
    font-size: clamp(2.9rem, 2.3rem + 0.7vw, 3.55rem);
  }

  .quiz-results-detail,
  .quiz-error {
    font-size: clamp(1rem, 0.9rem + 0.12vw, 1.1rem);
  }

  .quiz-summary-intro,
  .quiz-summary-table {
    font-size: clamp(0.92rem, 0.83rem + 0.1vw, 1rem);
  }

  .quiz-summary-table th,
  .quiz-summary-table td {
    padding: clamp(0.72rem, 0.6rem + 0.14vw, 0.86rem) clamp(0.95rem, 0.8rem + 0.18vw, 1.14rem);
  }

  .quiz-confirm-modal {
    width: clamp(420px, 28vw, 520px);
    max-width: 92vw;
    padding: clamp(1.65rem, 1.35rem + 0.28vw, 1.95rem);
    border-radius: clamp(10px, 8px + 0.15vw, 12px);
  }

  .quiz-confirm-text {
    font-size: clamp(1rem, 0.9rem + 0.12vw, 1.1rem);
  }

  /* Desktop corrective overrides: standardized container + vertical scaling */
  .quiz-shell {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
  }

  .quiz-choices,
  .quiz-choices--review {
    gap: clamp(22px, 14px + 0.45vw, 30px);
  }

  .quiz-choice-row,
  .quiz-choices--review .quiz-choice-row {
    padding-top: clamp(24px, 18px + 0.5vw, 32px);
    padding-bottom: clamp(24px, 18px + 0.5vw, 32px);
  }

  .quiz-btn {
    font-size: clamp(1.2rem, 1.02rem + 0.2vw, 1.4rem);
    padding: clamp(1.05rem, 0.82rem + 0.2vw, 1.3rem)
      clamp(1.85rem, 1.45rem + 0.4vw, 2.35rem);
    min-height: clamp(3.4rem, 2.9rem + 0.45vw, 4rem);
  }

  .quiz-btn--nav,
  .quiz-btn--submit {
    font-size: clamp(1.3rem, 1.1rem + 0.2vw, 1.5rem);
    padding: clamp(1.2rem, 0.98rem + 0.22vw, 1.5rem)
      clamp(2.8rem, 2.25rem + 0.55vw, 3.45rem);
    min-height: clamp(3.7rem, 3.2rem + 0.45vw, 4.35rem);
  }
}