:root {
  color-scheme: light dark;
  --bg: #f7f6f2;
  --fg: #1c2420;
  --muted: #69726d;
  --accent: #2f6b4f;
  --font: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  /* Monospace fonts have no CJK glyphs; name the CJK fallback so Japanese and Chinese get the right forms. */
  --font-ja: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Noto Sans CJK JP", "Yu Gothic", Meiryo, monospace;
  --font-zh: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "PingFang SC", "Noto Sans CJK SC",
    "Microsoft YaHei", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1311;
    --fg: #dfe6e2;
    --muted: #8b958f;
    --accent: #7cc4a0;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.7 var(--font);
}

html:lang(ja) body {
  font-family: var(--font-ja);
}

html:lang(zh-Hans) body {
  font-family: var(--font-zh);
}

main {
  padding: clamp(2.5rem, 12vh, 7rem) clamp(1.25rem, 6vw, 4rem) 4rem;
}

main > * {
  max-width: 72ch;
}

h1,
p,
dl {
  margin: 0 0 1.7em;
}

h1 {
  font-size: inherit;
  font-weight: 700;
}

dl {
  display: grid;
  grid-template-columns: 12ch 1fr;
  column-gap: 1ch;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

.langs a[aria-current="page"] {
  color: var(--fg);
  font-weight: 700;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.15em;
  margin-left: 0.2em;
  vertical-align: -0.2em;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
}