:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #6a737d;
  --border: #d8dee4;
  --accent: #0a6e5c;
  --code-bg: #f6f8fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --fg: #e6e6e6;
    --muted: #9aa0a6;
    --border: #3a3f47;
    --accent: #4cc2ad;
    --code-bg: #22252b;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0 auto;
  max-width: 42rem;
  padding: 0 1rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.9;
  overflow-wrap: break-word;
}
a {
  color: var(--accent);
}
h1 {
  font-size: 1.6rem;
  line-height: 1.4;
}
h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}
h3 {
  font-size: 1.05rem;
  margin-top: 2rem;
}
img {
  max-width: 100%;
  height: auto;
}
pre {
  background: var(--code-bg);
  padding: 1rem;
  overflow-x: auto;
  border-radius: 6px;
  font-size: 0.85rem;
  line-height: 1.6;
}
code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.9em;
}
pre code {
  padding: 0;
  background: none;
}
table {
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
}
th,
td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.6rem;
}
blockquote {
  margin: 1rem 0;
  padding: 0.1rem 1rem;
  border-left: 3px solid var(--border);
  color: var(--muted);
}
.site-header {
  padding: 1rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.site-header a {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
}
.site-footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
}
.meta {
  color: var(--muted);
  font-size: 0.85rem;
}
.meta a,
.tag {
  color: var(--muted);
}
.pr-notice {
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
}
.article-list {
  list-style: none;
  padding: 0;
}
.article-list li {
  margin-bottom: 1.5rem;
}
.article-list time {
  margin-left: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.article-list p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.sources {
  font-size: 0.85rem;
}