.gerund-page {
  --gerund-accent: var(--ks-russian);
}

.gerund-eyebrow,
.gerund-section-kicker {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--gerund-accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.gerund-stepper {
  position: sticky;
  top: calc(var(--trainer-topbar-h, 64px) + 8px);
  z-index: 9;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 18px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.gerund-stepper a {
  padding: 10px 12px;
  border-radius: 11px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.gerund-stepper a.is-active {
  color: var(--text);
  background: var(--primary-soft);
}

.gerund-start-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .7fr);
  gap: 26px;
  align-items: end;
}

.gerund-start-panel h2,
.gerund-result-panel h2 {
  margin-bottom: 8px;
}

.gerund-start-panel p {
  margin: 0;
  color: var(--muted);
}

.gerund-start-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: end;
}

.gerund-resume-hint {
  grid-column: 1 / -1;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--text) !important;
}

.gerund-rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.gerund-rule-card {
  position: relative;
  overflow: hidden;
  min-height: 180px;
}

.gerund-rule-card h3 {
  margin: 34px 0 10px;
  font-family: var(--ks-font-serif);
  font-size: 23px;
}

.gerund-rule-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.gerund-rule-card em {
  color: var(--text);
}

.gerund-rule-number {
  position: absolute;
  top: 18px;
  right: 22px;
  color: color-mix(in srgb, var(--gerund-accent) 42%, transparent);
  font-family: var(--ks-font-serif);
  font-size: 40px;
  font-weight: 800;
}

.gerund-practice-panel {
  padding: 0;
  overflow: hidden;
}

.gerund-practice-panel .trainer-score-bar {
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}

.gerund-progress-track {
  height: 5px;
  background: var(--card-soft);
}

.gerund-progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gerund-accent), var(--primary));
  transition: width .25s ease;
}

.gerund-task {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(28px, 6vw, 64px) 24px;
  text-align: center;
}

.gerund-aspect {
  display: inline-flex;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--card-soft);
  font-size: 12px;
  font-weight: 700;
}

.gerund-prompt {
  margin: 24px 0 8px;
  color: var(--muted);
}

.gerund-verb {
  display: block;
  margin-bottom: 30px;
  font-family: var(--ks-font-serif);
  font-size: clamp(42px, 9vw, 76px);
  line-height: 1;
}

.gerund-answer-field {
  max-width: 420px;
  margin: 0 auto;
  text-align: left;
}

.gerund-answer-field input {
  min-height: 54px;
  font-size: 20px;
  text-align: center;
}

.gerund-task-actions {
  justify-content: center;
  margin-top: 16px;
}

.gerund-feedback {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: left;
}

.gerund-feedback.is-correct {
  border-color: color-mix(in srgb, var(--success) 45%, var(--border));
  background: color-mix(in srgb, var(--success) 10%, var(--card));
}

.gerund-feedback.is-wrong {
  border-color: color-mix(in srgb, var(--warning) 48%, var(--border));
  background: color-mix(in srgb, var(--warning) 10%, var(--card));
}

.gerund-feedback strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.gerund-feedback p {
  margin: 5px 0 0;
  line-height: 1.55;
}

.gerund-feedback p:last-child {
  color: var(--muted);
}

.gerund-result-panel {
  text-align: center;
}

.gerund-result-score {
  display: grid;
  place-items: center;
  gap: 4px;
  margin: 24px 0;
}

.gerund-result-score strong {
  color: var(--gerund-accent);
  font-family: var(--ks-font-serif);
  font-size: clamp(58px, 12vw, 96px);
  line-height: 1;
}

.gerund-result-score span {
  color: var(--muted);
}

.gerund-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 620px;
  margin: 0 auto 24px;
}

.gerund-result-grid div {
  display: grid;
  gap: 4px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card-soft);
}

.gerund-result-grid strong {
  font-size: 28px;
}

.gerund-result-grid span {
  color: var(--muted);
  font-size: 13px;
}

.gerund-result-actions {
  justify-content: center;
}

@media (max-width: 720px) {
  .gerund-stepper {
    top: calc(var(--trainer-topbar-h, 64px) + 4px);
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gerund-stepper a {
    padding: 9px 8px;
    font-size: 11px;
  }

  .gerund-start-panel,
  .gerund-rule-grid {
    grid-template-columns: 1fr;
  }

  .gerund-start-controls {
    grid-template-columns: 1fr;
  }

  .gerund-start-controls .kd-button,
  .gerund-task-actions .kd-button,
  .gerund-result-actions .kd-button {
    width: 100%;
  }

  .gerund-result-grid {
    gap: 8px;
  }

  .gerund-result-grid div {
    padding: 14px 8px;
  }

  .gerund-result-grid strong {
    font-size: 23px;
  }
}