@media (max-width: 991.98px) {
  .app-shell {
    width: min(100% - 32px, 760px);
    padding-top: 22px;
  }

  .start-screen {
    padding: 48px 0 24px;
  }

  .start-copy {
    max-width: 660px;
    text-align: center;
  }

  .brand {
    justify-content: center;
  }

  .start-lead,
  .trail-preview {
    margin-inline: auto;
  }

  .trail-preview {
    margin-top: 19px;
  }

  .setup-card {
    max-width: 570px;
    margin-inline: auto;
  }
}

@media (max-width: 640px) {
  .home-link {
    top: 12px;
    left: 12px;
    width: 44px;
    height: 44px;
  }

  .app-shell {
    width: min(100% - 24px, 570px);
    padding: 12px 0;
  }

  .start-screen {
    min-height: calc(100svh - 24px);
    padding-top: 52px;
  }

  .start-copy h1 {
    font-size: clamp(2.6rem, 12vw, 3.8rem);
  }

  .start-lead {
    margin-top: 13px;
    font-size: 0.92rem;
  }

  .eyebrow {
    margin-top: 20px;
  }

  .trail-preview {
    height: 66px;
    margin-top: 15px;
    border-radius: 18px;
  }

  .trail-node {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
    border-width: 2px;
    border-radius: 13px;
  }

  .setup-card {
    padding: 19px;
    border-radius: 24px;
  }

  .game-screen {
    min-height: calc(100svh - 24px);
  }

  .game-header {
    grid-template-columns: 1fr auto;
    gap: 8px;
  }

  .brand--compact {
    display: none;
  }

  .game-status {
    margin-top: 2px;
  }

  .question-card {
    min-height: calc(100svh - 136px);
    padding: 18px;
    border-radius: 23px;
  }

  .question-card h1 {
    margin: 11px auto 14px;
  }

  .answer-button {
    min-height: 62px;
    grid-template-columns: 31px minmax(0, 1fr) 20px;
    gap: 7px;
    padding: 8px 10px;
    border-radius: 14px;
  }

  .answer-letter {
    width: 31px;
    height: 31px;
  }

  .visual-host {
    height: 113px;
    margin-bottom: 12px;
  }
}

@media (max-width: 430px) {
  .language-button {
    min-height: 58px;
    justify-content: center;
    padding: 7px 5px;
  }

  .language-button > span:last-child {
    display: none;
  }

  .language-flag {
    font-size: 1.55rem;
  }

  .feature-row small {
    white-space: normal;
  }

  .game-status {
    justify-content: space-between;
    gap: 7px;
  }

  .back-button span {
    display: none;
  }

  .back-button {
    width: 44px;
    justify-content: center;
    padding: 0;
  }

  .answer-grid {
    gap: 7px;
  }

  .answer-button {
    min-height: 58px;
    grid-template-columns: 28px minmax(0, 1fr) 18px;
    padding: 7px 8px;
  }

  .answer-letter {
    width: 28px;
    height: 28px;
    border-radius: 8px;
  }

  .answer-text {
    font-size: 0.72rem;
  }

  .feedback {
    min-height: 52px;
    margin-top: 8px;
    padding: 6px 9px;
  }

  .feedback-icon {
    width: 32px;
    height: 32px;
  }

  .next-button {
    min-height: 44px;
    margin-top: 7px;
  }
}

@media (max-width: 350px) {
  .app-shell {
    width: min(100% - 16px, 570px);
  }

  .setup-card {
    padding: 15px;
  }

  .level-grid {
    gap: 5px;
  }

  .feature-row {
    gap: 5px;
  }

  .question-card {
    padding: 14px;
  }

  .question-card h1 {
    font-size: 1.45rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}