:root {
  --green-50:  #e1f5ee;
  --green-100: #9fe1cb;
  --green-400: #1d9e75;
  --green-600: #0f6e56;
  --green-800: #085041;
  --green-900: #04342c;
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --font-sans: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-900);
  background: white;
  -webkit-font-smoothing: antialiased;
}

/* Full-height page shell — keeps footer pinned to bottom on short pages */
.site-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.site-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Shared utility classes */
.section { padding: 80px 40px; }
.section-light { background: var(--gray-50); }
.section-white { background: white; }
.section-dark { background: var(--gray-900); }
.section-green { background: var(--green-600); }

.section-eyebrow {
  text-align: center;
  color: var(--gray-400);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}
.section-dark .section-eyebrow { color: var(--gray-600); }

.section-title {
  text-align: center;
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
  color: var(--gray-900);
}
.section-dark .section-title { color: white; }

.section-sub {
  text-align: center;
  color: var(--gray-500);
  font-size: 15px;
  margin-bottom: 48px;
  font-weight: 300;
}

.btn-primary {
  background: var(--green-400);
  color: white;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 26px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--green-600); }

.btn-ghost {
  background: transparent;
  color: var(--gray-400);
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 11px 22px;
  border: 0.5px solid var(--gray-700);
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: border-color 0.15s, color 0.15s;
}
.btn-ghost:hover { border-color: var(--gray-500); color: white; }

.btn-white {
  background: white;
  color: var(--green-600);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 30px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.15s;
}
.btn-white:hover { background: var(--green-50); }

@media (max-width: 680px) {
  .section { padding: 56px 20px; }
}