:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6e6e73;
  --accent: #0a84ff;
  --border: #e5e5ea;
  --card: #f7f7f8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0f;
    --fg: #f2f2f7;
    --muted: #9a9a9f;
    --accent: #409cff;
    --border: #2c2c2e;
    --card: #17171a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header.page {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

header.page .mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #6ac4ff);
  flex-shrink: 0;
}

header.page .name {
  font-weight: 600;
  font-size: 17px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 40px;
}

h1 {
  font-size: 28px;
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 19px;
  margin: 36px 0 10px;
  letter-spacing: -0.005em;
}

p, li {
  color: var(--fg);
  font-size: 15.5px;
}

ul {
  padding-left: 20px;
}

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

a:hover { text-decoration: underline; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 20px 0;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}

footer.page {
  margin-top: 64px;
  color: var(--muted);
  font-size: 13px;
}