/* Приведение к общему знаменателю. tokens-only. Все селекторы под .app--privedenie-k-obshchemu-znamenatelyu. */
.app--privedenie-k-obshchemu-znamenatelyu {
  position: relative;
  max-width: 72rem;
  margin: 0 auto;
  padding: var(--space-2) var(--space-4) var(--space-8);
  font-family: var(--font-body);
  color: var(--text);
}

.app--privedenie-k-obshchemu-znamenatelyu [hidden] {
  display: none !important;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-confetti,
.app--privedenie-k-obshchemu-znamenatelyu .trainer-quiz-confetti {
  pointer-events: none;
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 40;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-confetti .cp,
.app--privedenie-k-obshchemu-znamenatelyu .trainer-quiz-confetti .cp {
  position: absolute;
  top: -12px;
  border-radius: 2px;
  animation-name: lcd-confetti-fall;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
}

@keyframes lcd-confetti-fall {
  to {
    transform: translateY(110vh) rotate(480deg);
    opacity: 0;
  }
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-workspace {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-topbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  min-height: 56px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-2);
  font: inherit;
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background 130ms ease,
    border-color 130ms ease,
    color 130ms ease,
    transform 130ms ease;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__icon {
  flex-shrink: 0;
  font-size: var(--text-lg);
  line-height: 1;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__title {
  font-family: var(--font-display);
  font-size: clamp(0.875rem, 3.2vw, 1rem);
  font-weight: 800;
  line-height: 1.2;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__sub {
  display: block;
  font-size: clamp(0.625rem, 2.4vw, 0.75rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab.is-active {
  background: var(--primary);
  color: var(--text-inv);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab.is-active .lcd-tab__sub {
  color: color-mix(in srgb, var(--text-inv) 85%, transparent);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-tab:active {
  transform: scale(0.98);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-idle,
.app--privedenie-k-obshchemu-znamenatelyu .lcd-solve,
.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary {
  margin-block: var(--space-4) var(--space-6);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-idle {
  width: 100%;
  max-width: 36rem;
  margin-inline: auto;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-config-head {
  margin-bottom: var(--space-4);
  text-align: center;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-config-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4vw, 1.5rem);
  font-weight: 800;
  line-height: 1.2;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-config-lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-levels {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-level {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 88px;
  text-align: center;
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border);
  background: var(--surface-2);
  font: inherit;
  cursor: pointer;
  touch-action: manipulation;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-level.is-active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-level__title {
  font-weight: 800;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-level__hint {
  color: var(--text-muted);
  font-size: var(--text-sm);
  line-height: 1.35;
  max-width: 18rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-btn {
  min-height: 56px;
  padding: 0.55em 1.2em;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--primary);
  color: var(--text-inv);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    transform 130ms ease,
    background 130ms ease;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-btn:active {
  transform: scale(0.98);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-btn--start {
  width: 100%;
  margin-top: var(--space-4);
  font-size: 1.125rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-btn--ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  min-height: 44px;
  font-weight: 700;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-badge {
  display: inline-block;
  padding: 0.2em 0.55em;
  border-radius: var(--radius-md);
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 800;
  font-size: var(--text-sm);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-progress-text {
  font-weight: 700;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  pointer-events: none;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-step {
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 700;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-step.is-active {
  background: var(--primary-bg);
  color: var(--primary);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-step.is-done {
  background: color-mix(in srgb, var(--success, #437a22) 16%, var(--surface));
  color: var(--text);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-layout {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-main {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding-bottom: var(--space-2);
  -webkit-overflow-scrolling: touch;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-problem {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-fractions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-4);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 52px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1.1;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-frac__bar {
  width: 100%;
  height: 2px;
  background: currentColor;
  margin: 3px 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-and {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-context {
  display: grid;
  gap: 4px;
  margin: 0 0 var(--space-3);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-result {
  margin: 0;
  font-weight: 800;
  color: var(--success, #437a22);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-result__ok {
  margin-left: 4px;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-prompt {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  font-weight: 800;
  text-align: center;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-equations {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  justify-items: center;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.15rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__text {
  font-family: var(--font-display);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__frac {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__arrow {
  font-size: 1.35rem;
  color: var(--text-muted);
  line-height: 1;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq--factor .lcd-frac {
  min-width: 44px;
  font-size: 1.2rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-equations--nums {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__and {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__target {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq--nums {
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq--nums .lcd-eq__target {
  min-width: 64px;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq--nums .lcd-input {
  width: 4.75rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__target-den {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.1;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-eq__target-den .lcd-frac__bar {
  width: 100%;
  min-width: 3.5rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-input {
  width: 5.5rem;
  min-height: 48px;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px 10px;
  font-size: 1.25rem;
  font-weight: 800;
  text-align: center;
  background: var(--surface);
  color: inherit;
  font-family: inherit;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-input:focus,
.app--privedenie-k-obshchemu-znamenatelyu .lcd-input:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-input:disabled {
  opacity: 0.7;
  background: var(--surface-2);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-final {
  margin: var(--space-2) 0 var(--space-3);
  text-align: center;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-final__lead {
  margin: 0 0 6px;
  font-weight: 800;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-feedback {
  min-height: 1.4em;
  margin: var(--space-2) 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-feedback.is-ok {
  color: var(--success, #437a22);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-feedback.is-err {
  color: var(--danger, var(--error, #d12424));
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-check-notice {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-dock {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 0.5rem 0 max(0.5rem, env(safe-area-inset-bottom, 0px));
  position: sticky;
  bottom: 0;
  z-index: 6;
  box-shadow: 0 -8px 24px color-mix(in srgb, var(--text) 6%, transparent);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-help-wrap {
  min-height: 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-help-btn {
  min-height: 44px;
  padding: 0.45em 0.9em;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-help-text {
  margin: 6px 0 0;
  font-size: var(--text-sm);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  max-height: 7.5rem;
  overflow: auto;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.5rem;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-actions .lcd-btn {
  flex: 1 1 8rem;
  min-width: 0;
  margin: 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  width: 100%;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-key {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  min-height: 56px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--primary) 12%, var(--border));
  background: var(--surface);
  box-shadow: 0 2px 6px color-mix(in srgb, var(--text) 7%, transparent);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  font-variant-numeric: tabular-nums;
  color: color-mix(in srgb, var(--primary) 72%, var(--text));
  cursor: pointer;
  touch-action: manipulation;
  transition:
    transform 130ms ease,
    background 130ms ease,
    border-color 130ms ease,
    box-shadow 130ms ease;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-key:active {
  transform: scale(0.95);
  box-shadow: none;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-key:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-key--ok {
  background: var(--primary);
  color: var(--text-inv);
  border-color: var(--primary);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-key--del {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-overlay {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: color-mix(in srgb, var(--text) 45%, transparent);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-dialog {
  width: min(28rem, 100%);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-dialog h3 {
  margin: 0 0 var(--space-2);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary-stats {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary-stats div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary-stats dt {
  color: var(--text-muted);
}

.app--privedenie-k-obshchemu-znamenatelyu .lcd-summary-stats dd {
  margin: 0;
  font-weight: 800;
}

@media (hover: hover) and (pointer: fine) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-btn:hover {
    background: var(--primary-h);
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-btn--ghost:hover,
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-help-btn:hover {
    background: var(--primary-bg);
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-key:hover {
    background: var(--primary-bg);
    border-color: color-mix(in srgb, var(--primary) 22%, var(--border));
    transform: scale(1.05);
  }
}

@media (min-width: 640px) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-levels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 719px) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-problem {
    margin-bottom: var(--space-2);
    padding: var(--space-3);
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-dock {
    gap: 0.35rem;
    padding-top: 0.35rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-btn {
    min-height: 44px;
    font-size: 0.9375rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-numpad {
    gap: 4px;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-key {
    height: 44px;
    min-height: 44px;
    font-size: 1.15rem;
    border-radius: 10px;
  }
}

@media (min-width: 720px) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-workspace {
    max-width: 48rem;
    margin-inline: auto;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-tabs {
    max-width: 32rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 0.75rem;
    align-items: start;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-main {
    overflow: visible;
    padding-bottom: 0;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-problem {
    max-width: 28rem;
    width: 100%;
    margin-inline: auto;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-frac {
    min-width: 64px;
    font-size: 1.7rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-input {
    width: 6.25rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-solve-dock {
    position: sticky;
    top: 4.5rem;
    bottom: auto;
    border-top: none;
    border-left: 1px solid var(--border);
    padding: 0 0 0 0.75rem;
    box-shadow: none;
    align-self: start;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-key {
    height: 48px;
    min-height: 48px;
    font-size: 1.2rem;
  }
}

@media (max-width: 520px) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-tab {
    min-height: 48px;
    padding: 0.45rem 0.55rem;
    gap: 0.35rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__icon {
    font-size: 1rem;
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-workspace {
    padding: var(--space-3);
  }

  .app--privedenie-k-obshchemu-znamenatelyu .lcd-levels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 360px) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-tab__icon {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .app--privedenie-k-obshchemu-znamenatelyu .lcd-confetti,
  .app--privedenie-k-obshchemu-znamenatelyu .trainer-quiz-confetti {
    display: none;
  }

  .app--privedenie-k-obshchemu-znamenatelyu * {
    transition: none !important;
    animation: none !important;
  }
}