:root {
  --bg: #ffffff;
  --fg: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --card: #f9fafb;
  --accent: #4f46e5;
  --accent-2: #14b8a6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1116; --fg: #f3f4f6; --muted: #9ca3af; --line: #262a33; --card: #171a21; --accent: #818cf8; --accent-2: #2dd4bf; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
a { color: var(--accent); }
h1 { margin: 12px 0 8px; font-size: clamp(28px, 5vw, 40px); line-height: 1.15; }
h2 { margin: 36px 0 8px; font-size: 20px; }
.lead { margin: 0 0 24px; color: var(--muted); font-size: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; color: inherit; }
.brand img { border-radius: 10px; }
.button { display: inline-block; padding: 12px 20px; border-radius: 12px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 600; text-decoration: none; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 16px; }
.card { padding: 16px; border-radius: 12px; background: var(--card); }
.card strong { display: block; margin-bottom: 4px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.muted { color: var(--muted); }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }