:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #444444;
  --border: #e7e7e7;
  --card: #fafafa;
  --link: #111111;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.container { max-width: 980px; margin: 0 auto; padding: 0 20px; }

header {
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 12px;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--link);
}

.nav a {
  color: var(--link);
  text-decoration: none;
}

.nav-links { display: flex; gap: 14px; flex-wrap: wrap; }

main { padding: 56px 0 80px; }

h1 { font-size: 46px; margin: 0 0 12px; letter-spacing: -0.02em; }

p { font-size: 18px; line-height: 1.6; color: var(--muted); margin: 0 0 14px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 26px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  background: var(--card);
}

.card h2 { margin: 0 0 8px; font-size: 20px; }

.card p { margin: 0; font-size: 16px; }

.card a { display: inline-block; margin-top: 12px; font-weight: 600; }

footer {
  border-top: 1px solid var(--border);
  padding: 26px 0;
  color: var(--muted);
  font-size: 14px;
}

small { color: var(--muted); }