:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --panel: #ffffff;
  --fg: #191b1f;
  --muted: #6b7280;
  --line: #e5e7eb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --panel: #1c1c1e;
    --fg: #f2f2f7;
    --muted: #9ca3af;
    --line: #2f3033;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 48px 24px 80px;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main { max-width: 640px; margin: 0 auto; }

header { display: flex; align-items: center; gap: 16px; margin-bottom: 36px; }
header img { width: 56px; height: 56px; border-radius: 12px; }
h1 { font-size: 22px; margin: 0 0 2px; letter-spacing: -0.01em; }
.tagline { margin: 0; color: var(--muted); }

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 26px;
  margin-bottom: 18px;
}
h2 { font-size: 15px; margin: 0 0 10px; }
p { margin: 0 0 12px; }
p:last-child, ul:last-child { margin-bottom: 0; }
ul { margin: 0 0 12px; padding-left: 20px; }
li { margin-bottom: 5px; }
a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.muted { color: var(--muted); }
footer {
  max-width: 640px;
  margin: 32px auto 0;
  color: var(--muted);
  font-size: 13px;
}
footer a { margin-right: 16px; }