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

:root {
  --green: #2e7d32;
  --green-light: #43a047;
  --green-bg: #f1f8f1;
  --green-border: #c8e6c9;
  --text: #1a1a1a;
  --text-muted: #555;
  --white: #fff;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  line-height: 1.6;
}

/* NAV */
nav {
  background: var(--white);
  border-bottom: 1px solid var(--green-border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 6px rgba(0,0,0,0.06);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--green);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -.3px;
}

.nav-brand .badge {
  background: var(--green);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: .5px;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .9rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}

.nav-links a:hover { background: var(--green-bg); color: var(--green); }

.nav-links a.btn-primary {
  background: var(--green);
  color: #fff;
  font-weight: 600;
}

.nav-links a.btn-primary:hover { background: var(--green-light); }

/* CONTAINER */
.container { max-width: 900px; margin: 0 auto; padding: 0 2rem; }

/* FOOTER */
footer {
  background: var(--white);
  border-top: 1px solid var(--green-border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: .85rem;
}

footer strong { color: var(--green); }