:root {
  color-scheme: light dark;
  --bg: #f6f5f2;
  --fg: #1c1c1a;
  --muted: #5c5b57;
  --border: #d8d6cf;
  --link: #1d4e89;
  --card: #fffdf8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --fg: #f2f0ea;
    --muted: #b4b2aa;
    --border: #3a3936;
    --link: #8cbcf0;
    --card: #201f1d;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Noto Sans JP",
    sans-serif;
  line-height: 1.75;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

header h1 {
  margin: 0 0 0.4rem;
  font-size: 1.85rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.lede,
.meta {
  color: var(--muted);
}

main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.4rem 1.7rem;
}

h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.15rem;
}

h2:first-child {
  margin-top: 0;
}

p,
ul {
  margin: 0 0 1rem;
}

ul {
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.35rem;
}

a {
  color: var(--link);
}

code,
.scope {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86rem;
  word-break: break-all;
}

footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

footer p {
  margin: 0 0 0.4rem;
}

.updated {
  color: var(--muted);
  font-size: 0.92rem;
}