:root {
  --background: #f7f9f7;
  --foreground: #18332b;
  --primary: #24634c;
  --muted: #576b61;
  --border: #dce5dd;
  --card: #ffffff;
}
* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font:
    16px/1.55 system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
}
header,
main,
footer {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.25rem;
}
header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
header .mark {
  display: inline-block;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.6rem;
  background: var(--primary);
}
header small {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
}
h1 {
  margin: 1rem 0 1.25rem;
  font-size: 1.9rem;
  line-height: 1.2;
}
h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
p,
ol {
  margin: 0 0 1rem;
}
ol {
  padding-left: 1.25rem;
}
li {
  margin-bottom: 0.5rem;
}
.note,
footer {
  color: var(--muted);
}
.result {
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-left-width: 6px;
  border-radius: 0.75rem;
  background: var(--card);
}
.result p:last-child {
  margin-bottom: 0;
}
.good {
  border-left-color: var(--primary);
}
.bad {
  border-left-color: #9f1d1d;
}
.caution {
  border-left-color: #a16207;
}
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1.25rem;
  margin: 1rem 0;
}
dt {
  color: var(--muted);
}
dd {
  margin: 0;
  font-weight: 600;
}
.code {
  white-space: nowrap;
}
footer {
  font-size: 0.85rem;
}
a {
  color: var(--primary);
}
a:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}
@media (max-width: 26rem) {
  dl {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }
  dd {
    margin-bottom: 0.6rem;
  }
}