:root {
  --fg: #1a1a1a;
  --fg-muted: #555;
  --bg: #ffffff;
  --bg-soft: #f6f6f7;
  --accent: #008060;
  --border: #e1e3e5;
  --max: 760px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
header.site .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header.site .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
}
header.site nav a {
  margin-left: 20px;
  color: var(--fg-muted);
  font-size: 14px;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

h1 { font-size: 32px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 36px 0 12px; }
h3 { font-size: 17px; margin: 24px 0 8px; }
p, ul, ol { margin: 12px 0; }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
blockquote {
  margin: 16px 0;
  padding: 8px 16px;
  color: var(--fg-muted);
  border-left: 3px solid var(--border);
  background: var(--bg-soft);
}
code {
  background: var(--bg-soft);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
}

.hero {
  padding: 32px 0 8px;
}
.hero p.lead {
  font-size: 18px;
  color: var(--fg-muted);
}
.cta {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  font-weight: 600;
}
.cta:hover { text-decoration: none; opacity: 0.92; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.feature {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-soft);
}
.feature h3 { margin: 0 0 6px; }
.feature p { margin: 0; color: var(--fg-muted); font-size: 14px; }

footer.site {
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 13px;
}
footer.site .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer.site a { color: var(--fg-muted); margin-left: 16px; }