:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1a1c1e;
  --muted: #55606a;
  --accent: #0d9488;
  --border: #d9dde1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16191c;
    --card: #22262a;
    --text: #f1f3f5;
    --muted: #a7b0b8;
    --accent: #2dd4bf;
    --border: #363c42;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 32px 20px 64px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", Meiryo, sans-serif;
  font-weight: 700;
  font-size: 17px;
  line-height: 1.75;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
}

header {
  margin-bottom: 32px;
}

h1 {
  font-size: 32px;
  margin: 0 0 8px;
}

.lead {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

h2 {
  font-size: 22px;
  margin: 40px 0 16px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 8px;
}

.ext {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 16px;
}

.ext-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.ext-name {
  font-size: 20px;
}

.ext-ver {
  font-size: 14px;
  color: var(--muted);
}

.ext-desc {
  margin: 10px 0 14px;
  color: var(--text);
}

.ext a {
  color: var(--accent);
  text-decoration: none;
}

.ext a:hover {
  text-decoration: underline;
}

ol {
  padding-left: 1.4em;
}

code {
  background: var(--border);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 15px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 14px;
}