:root {
  color-scheme: light dark;
}

body {
  max-width: 46rem;
  margin: 0 auto;
  padding: 1rem;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  line-height: 1.7;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid color-mix(in srgb, currentColor 25%, transparent);
}

.site-title {
  margin: 0;
  font-weight: bold;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.category,
.filetype {
  font-size: 0.8em;
  opacity: 0.7;
}

.category::before { content: "["; }
.category::after { content: "]"; }