*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  width: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  width: 100%;
  min-width: 0;
  overflow-wrap: break-word;
}

main {
  width: 100%;
  min-width: 0;
}

img,
svg,
video,
canvas,
iframe,
embed,
object {
  max-width: 100%;
}

input,
select,
textarea,
button {
  max-width: 100%;
}

table {
  max-width: 100%;
}

.tree-panel {
  max-width: 100%;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

@media (max-width: 900px) {
  .page-header {
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 1rem 1.25rem;
  }

  main {
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
  }
}

@media (max-width: 600px) {
  .page-header {
    justify-content: space-around;
    padding: 0.75rem 1rem;
  }

  .header-left img,
  .header-right img {
    max-height: 52px;
    width: auto;
  }

  .header-title {
    font-size: 1rem;
  }

  main {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }

  .page {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .content-box,
  .question-panel,
  .status-box {
    padding: 1.25rem 1rem;
  }

  footer {
    padding: 1.25rem 0.75rem;
  }

  footer a {
    display: inline-block;
    margin: 0.25rem 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}