:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --fg-secondary: #4a4a4a;
  --bg: #ffffff;
  --card: #f6f6f7;
  --accent: #0f6f5c;
  --border: #e3e3e6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f2f2f2;
    --fg-secondary: #c4c4c4;
    --bg: #121212;
    --card: #1c1c1e;
    --accent: #4fd1b5;
    --border: #2e2e30;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 1.75rem; margin-bottom: 4px; }
h2 { font-size: 1.2rem; margin-top: 2rem; }
.meta { color: var(--fg-secondary); font-size: 0.875rem; margin-bottom: 1.5rem; }
p, li { color: var(--fg-secondary); }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 1.5rem;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 1.05rem; margin-bottom: 24px;
}
.brand .dot {
  width: 10px; height: 10px; border-radius: 50%; background: var(--accent);
}