:root {
  color-scheme: light;
  --fg: #1c1917;
  --muted: #57534e;
  --border: #e7e5e4;
  --bg: #f6f7f9;
  --card: #fff;
  --accent: #4f46e5;
}
* { box-sizing: border-box; }
html { font-family: Inter, system-ui, -apple-system, sans-serif; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
}
a { color: var(--accent); }
header, main, footer {
  width: min(760px, calc(100% - 2rem));
  margin-left: auto;
  margin-right: auto;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}
.brand img { width: 32px; height: 32px; }
nav { display: flex; gap: 1rem; font-size: 0.9rem; }
main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.5rem 2.5rem;
  margin-bottom: 2rem;
}
h1 { font-size: 1.85rem; line-height: 1.25; margin: 0 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.75rem 0 0.6rem; }
h3 { font-size: 1.05rem; margin: 1.25rem 0 0.4rem; color: var(--fg); }
p, li { color: var(--muted); }
ul { padding-left: 1.2rem; }
.cta {
  display: inline-block;
  margin-top: 0.5rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.55rem 1rem;
  border-radius: 8px;
}
footer {
  padding: 0 0 2.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}
footer p { margin: 0.35rem 0; }