:root {
  --primary: #0066cc;
  --text: #1a1a1a;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  margin: 0;
  line-height: 1.6;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  background: var(--bg);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 980px;
  margin: 0 auto;
}

header a.logo {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 1.1rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
}

nav a:hover { color: var(--primary); }

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

main h1 {
  font-size: 2.25rem;
  margin: 0 0 0.5rem;
}

main h2 {
  margin-top: 2.5rem;
  font-size: 1.4rem;
}

main p { margin: 0.75rem 0; }

main .updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

main ul { padding-left: 1.25rem; }

a { color: var(--primary); }

footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  background: var(--bg-alt);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
}

.hero h1 {
  font-size: 2.75rem;
  margin: 0 0 1rem;
}

.hero p {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto;
}

.cta-row {
  margin-top: 2rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-row a {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
}

.cta-row a.secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}