* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  background: #fff;
  color: #000;
  line-height: 1.5;
}

main {
  max-width: 640px;
  margin: 48px auto;
  padding: 0 16px;
}

h1 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 24px;
}

.typed {
  min-height: 4em;
  border: 1px solid #000;
  padding: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

.typed .err { text-decoration: line-through; }

.typed .cur { border-left: 2px solid #000; }

.meta {
  display: flex;
  gap: 24px;
  margin: 12px 0 24px;
  font-size: 13px;
}

.btns { display: flex; gap: 8px; flex-wrap: wrap; }

button {
  font: inherit;
  background: #fff;
  color: #000;
  border: 1px solid #000;
  padding: 8px 16px;
  cursor: pointer;
}

button:disabled { opacity: 0.35; cursor: default; }

button:not(:disabled):hover { background: #000; color: #fff; }

.res {
  margin-top: 24px;
  border-top: 1px solid #000;
  padding-top: 16px;
  font-size: 13px;
}

.res.hide { display: none; }

.res p { margin-bottom: 8px; }

.res ul { margin: 8px 0; padding-left: 18px; }

.score { margin-top: 32px; font-size: 13px; }