:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e2e6ec;
  --text: #14213d;
  --muted: #5b6475;
  --primary: #1f3a5f;
  --primary-muted: #e3eaf3;
  --accent: #2e7d6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 8px;
  gap: 16px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  text-decoration: none;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 20px;
}

nav a {
  margin-left: 16px;
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
}

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

main { padding-top: 24px; padding-bottom: 48px; }

h1 { font-size: 36px; line-height: 1.2; margin: 24px 0 12px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }

.lead { font-size: 19px; color: var(--muted); max-width: 600px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  margin: 16px 0;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.features .card { margin: 0; }
.features h3 { margin-top: 0; }
.features p { margin: 0; color: var(--muted); font-size: 15px; }

.badge {
  display: inline-block;
  background: var(--primary-muted);
  color: var(--primary);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 600;
}

.updated { color: var(--muted); font-size: 14px; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }

footer {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 14px;
}

footer a { margin-right: 16px; color: var(--muted); }

@media (max-width: 520px) {
  h1 { font-size: 28px; }
  nav a { margin-left: 0; margin-right: 14px; }
}