:root {
  --color-primary: #1a472a;
  --color-secondary: #2f7d46;
  --color-accent: #4caf50;
  --color-bg: #f8faf9;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-light: #e8f5e9;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 800px;
}

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

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.95;
}

.cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  background-color: var(--color-accent);
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.button:hover {
  background-color: #43a047;
}

.button.secondary {
  background-color: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.button.secondary:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.section {
  padding: 3rem 0;
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.section p {
  margin-bottom: 1rem;
}

.alternate {
  background-color: var(--color-light);
}

.apps,
.principles {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.apps li,
.principles li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #d1d5db;
}

.apps li:last-child,
.principles li:last-child {
  border-bottom: none;
}

.contact a {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 600;
}

.contact a:hover {
  text-decoration: underline;
}

footer {
  background-color: var(--color-primary);
  color: white;
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
}

footer .small {
  opacity: 0.7;
  margin-top: 0.5rem;
}

.contact-form {
  display: grid;
  gap: 0.75rem;
  max-width: 500px;
  margin-top: 1.5rem;
}

.contact-form label {
  font-weight: 600;
  color: var(--color-primary);
}

.contact-form input,
.contact-form textarea {
  padding: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 0.375rem;
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form .cf-turnstile {
  margin: 0.5rem 0;
}

.form-feedback {
  margin-top: 0.5rem;
  font-weight: 500;
  min-height: 1.5rem;
}

.form-feedback.success { color: #15803d; }
.form-feedback.error { color: #b91c1c; }

@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .cta {
    flex-direction: column;
    align-items: center;
  }
}