:root {
  --primary: #2563eb;
  --text: #111827;
  --text-light: #4b5563;
  --bg: #ffffff;
  --border: #e5e7eb;
  --bg-alt: #f9fafb;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--primary);
  text-decoration: none;
}

nav a {
  color: var(--text-light);
  text-decoration: none;
  margin-left: 24px;
  font-size: 14px;
}

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

main {
  padding: 48px 24px 96px;
  max-width: 760px;
  margin: 0 auto;
}

h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.updated {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 32px;
}

h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 8px;
}

p { margin-bottom: 12px; color: var(--text-light); }

ul, ol {
  margin: 12px 0 12px 24px;
  color: var(--text-light);
}

li { margin-bottom: 6px; }

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

th {
  background: var(--bg-alt);
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
}

footer a {
  margin: 0 12px;
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 64px 24px 48px;
}

.hero h1 {
  font-size: 44px;
  margin-bottom: 16px;
}

.hero .lead {
  font-size: 18px;
  color: var(--text-light);
  max-width: 540px;
  margin: 0 auto 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  font-size: 15px;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-secondary {
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--border);
}

@media (max-width: 600px) {
  h1 { font-size: 26px; }
  .hero h1 { font-size: 34px; }
  nav a { margin-left: 12px; font-size: 13px; }
}