:root {
  --primary: #2563eb;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f9fafb;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  background: var(--bg-soft);
}

header.site .inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

header.site a.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
}

header.site nav {
  margin-left: auto;
  display: flex;
  gap: 16px;
}

header.site nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

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

h1 {
  font-size: 28px;
  margin-bottom: 8px;
  font-weight: 700;
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

h2 {
  font-size: 20px;
  margin-top: 32px;
  margin-bottom: 12px;
  font-weight: 600;
}

h3 {
  font-size: 17px;
  margin-top: 20px;
  margin-bottom: 8px;
  font-weight: 600;
}

p, ul, ol { margin-bottom: 12px; }

ul, ol { padding-left: 24px; }

li { margin-bottom: 6px; }

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

.callout {
  background: #fef3c7;
  border-left: 4px solid #f59e0b;
  padding: 12px 16px;
  border-radius: 6px;
  margin: 16px 0;
  font-size: 15px;
}

.callout.info {
  background: #dbeafe;
  border-color: var(--primary);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

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

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 40px;
}

footer.site a {
  color: var(--muted);
  text-decoration: none;
  margin: 0 8px;
}

footer.site a:hover { color: var(--primary); }

.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  margin-top: 8px;
}

.btn:hover { background: #1d4ed8; }

.app-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}

.app-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.app-card h3 { margin-top: 0; }

.app-card .links a {
  display: block;
  margin-top: 6px;
  font-size: 14px;
}

@media (max-width: 600px) {
  .app-cards { grid-template-columns: 1fr; }
  h1 { font-size: 24px; }
}