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

:root {
  --color-primary: #2e6b3e;
  --color-primary-light: #3d8f52;
  --color-accent: #f5a623;
  --color-text: #1a1a1a;
  --color-muted: #555;
  --color-bg: #fff;
  --color-bg-alt: #f8f7f4;
  --max-width: 860px;
  --font-body: system-ui, -apple-system, sans-serif;
}

html {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
}

body {
  margin: 0;
}

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

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

/* Nav */
header {
  background: var(--color-primary);
  color: #fff;
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  flex: 1;
}

header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header nav ul a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 0.95rem;
}

header nav ul a:hover,
header nav ul a.cta-link {
  color: var(--color-accent);
}

/* Main */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Hero */
.hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid #e5e5e5;
  margin-bottom: 2.5rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 640px;
}

/* CTA button */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--color-accent);
  color: #1a1a1a;
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  transition: opacity 0.15s;
  margin-top: 1.5rem;
}

.btn:hover {
  opacity: 0.88;
  color: #1a1a1a;
}

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--color-bg-alt);
  border-radius: 8px;
  padding: 1.5rem;
}

.card h3 {
  margin-top: 0;
  color: var(--color-primary);
}

/* MDX prose */
.prose h2 {
  color: var(--color-primary);
  margin-top: 2.5rem;
  border-bottom: 2px solid #e8e8e8;
  padding-bottom: 0.4rem;
}

.prose h3 {
  color: var(--color-primary-light);
}

.prose ul {
  padding-left: 1.4rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.disclaimer {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-muted);
  padding: 1rem 1.25rem;
  font-size: 0.88rem;
  color: var(--color-muted);
  margin: 2rem 0;
  border-radius: 0 4px 4px 0;
}

/* Footer */
footer {
  background: var(--color-bg-alt);
  border-top: 1px solid #e5e5e5;
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.88rem;
  color: var(--color-muted);
}

footer nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

footer nav a {
  color: var(--color-muted);
  text-decoration: none;
}

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