:root {
  --bg: #f7f9f4;
  --card: #ffffff;
  --text: #1a2e1a;
  --muted: #5a6b5a;
  --accent: #1c7a4f;
  --border: #dde5d8;
  --max: 720px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

header {
  background: linear-gradient(135deg, #1c7a4f 0%, #145a38 100%);
  color: #fff;
  padding: 2rem 1.25rem 1.75rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 700;
}

header p {
  margin: 0;
  opacity: 0.92;
  max-width: var(--max);
}

nav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

nav a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
}

nav a:hover { text-decoration: underline; }

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.25rem;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  color: var(--accent);
}

h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
}

p, li { color: var(--text); }

ul { padding-left: 1.25rem; }

.muted { color: var(--muted); font-size: 0.92rem; }

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

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  padding: 0.65rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
  margin-top: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

th { background: #eef4ea; }

footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

code {
  background: #eef4ea;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.88em;
}