:root { --bg: #fafafa; --fg: #1d1d1f; --muted: #5f6368; --accent: #7c4dff; --card: #fff; --line: #e3e3e8; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #16161a; --fg: #ececf1; --muted: #a0a0ab; --accent: #b39dff; --card: #1f1f25; --line: #34343c; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif; }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 32px; padding-bottom: 8px; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; justify-content: space-between; }
header .marca { font-weight: 700; font-size: 1.25rem; color: var(--fg); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-right: 16px; }
nav a:hover, nav a[aria-current] { color: var(--accent); }
main { padding-top: 16px; padding-bottom: 40px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 24px; margin: 20px 0; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 16px 0 8px; }
h2 { font-size: 1.2rem; margin: 28px 0 6px; }
p, li { color: var(--fg); }
.sub { color: var(--muted); }
a { color: var(--accent); }
footer { padding-top: 16px; padding-bottom: 40px; color: var(--muted); font-size: .9rem; border-top: 1px solid var(--line); }