:root {
  --green-900: #102a1f;
  --green-800: #18402f;
  --green-700: #1f5a40;
  --green-600: #287a55;
  --green-500: #3a9e6e;
  --green-400: #6fc296;
  --green-50:  #eaf5ee;
  --bark:      #2a2118;
  --amber:     #d8a657;
  --ink:       #0f1411;
  --paper:     #fbfdfa;
  --grey-700:  #3b4541;
  --grey-500:  #6c7672;
  --grey-300:  #c9d0cc;
  --grey-100:  #eef1ef;
  --shadow:    0 8px 24px rgba(16, 42, 31, 0.08);
  --shadow-lg: 0 18px 50px rgba(16, 42, 31, 0.16);
  --radius:    14px;
  --maxw:      1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--green-700); text-decoration: none; }
a:hover { color: var(--green-500); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: 'Source Serif Pro', 'Georgia', serif;
  color: var(--green-900);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 14px; }
h3 { font-size: 1.2rem; margin: 0 0 8px; }
p  { margin: 0 0 12px; color: var(--grey-700); }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--green-600);
  background: var(--green-50);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 253, 250, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--grey-100);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Source Serif Pro', Georgia, serif;
  font-weight: 700;
  color: var(--green-900);
  font-size: 1.15rem;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--green-500), var(--green-800));
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0.85;
  mix-blend-mode: screen;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--grey-700);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { background: var(--green-50); color: var(--green-800); }
.nav-links a.active { color: var(--green-800); background: var(--green-50); }
.nav-links .btn { margin-left: 8px; }
.nav-links a.btn-primary,
.nav-links a.btn-primary:hover { color: white; background: var(--green-700); }
.nav-links a.btn-primary:hover { background: var(--green-800); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--grey-300);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--green-800);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s, background 0.15s;
}
.btn-primary {
  background: var(--green-700);
  color: white;
}
.btn-primary:hover { background: var(--green-800); color: white; box-shadow: var(--shadow); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--green-800);
  border-color: var(--green-700);
}
.btn-ghost:hover { background: var(--green-50); color: var(--green-900); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 96px;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(58, 158, 110, 0.18), transparent 70%),
    radial-gradient(900px 400px at -10% 100%, rgba(24, 64, 47, 0.14), transparent 70%),
    linear-gradient(180deg, #f4faf6 0%, #eaf3ed 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 span { color: var(--green-600); }
.hero p.lead {
  font-size: 1.15rem;
  color: var(--grey-700);
  max-width: 580px;
  margin-bottom: 28px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: 18px;
  background: linear-gradient(160deg, #1f5a40 0%, #102a1f 100%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(216, 166, 87, 0.35), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(58, 158, 110, 0.45), transparent 45%);
}
.hero-visual svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
  padding-top: 36px;
  border-top: 1px solid rgba(40, 122, 85, 0.15);
}
.stat .num {
  font-family: 'Source Serif Pro', Georgia, serif;
  font-size: 2rem;
  color: var(--green-800);
  font-weight: 700;
}
.stat .lbl { color: var(--grey-500); font-size: 0.92rem; }

/* ---------- Sections ---------- */
section { padding: 80px 0; }
section.alt { background: var(--green-50); }
section.dark { background: var(--green-900); color: var(--green-50); }
section.dark h1, section.dark h2, section.dark h3 { color: white; }
section.dark p { color: rgba(234, 245, 238, 0.85); }

.section-head {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head p { font-size: 1.05rem; }

/* ---------- Card grid ---------- */
.grid {
  display: grid;
  gap: 22px;
}
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: white;
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--grey-100);
  box-shadow: 0 1px 2px rgba(16, 42, 31, 0.04);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(58, 158, 110, 0.35);
}
.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--green-50);
  color: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.card .icon svg { width: 22px; height: 22px; }
.card h3 { color: var(--green-900); }
.card p { font-size: 0.95rem; color: var(--grey-700); margin: 0; }

/* ---------- Feature list (bulleted) ---------- */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 28px;
}
.feature-list li {
  position: relative;
  padding-left: 28px;
  color: var(--grey-700);
  font-size: 0.97rem;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--green-500);
  box-shadow: inset 0 0 0 2px var(--green-50);
}
section.dark .feature-list li { color: rgba(234, 245, 238, 0.9); }
section.dark .feature-list li::before { background: var(--amber); box-shadow: inset 0 0 0 2px var(--green-800); }

/* ---------- Two-column block ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.reverse > :first-child { order: 2; }

.illustration {
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--green-50), white);
  border: 1px solid var(--green-100, #d6ead9);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

/* ---------- Standards strip ---------- */
.standards {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}
.tag {
  background: white;
  border: 1px solid var(--grey-300);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--green-800);
  font-weight: 500;
}
section.dark .tag {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--green-50);
}

/* ---------- Callout ---------- */
.callout {
  background: linear-gradient(135deg, var(--green-800), var(--green-700));
  color: white;
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 28px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.callout .badge {
  background: var(--amber);
  color: var(--bark);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 6px 12px;
  border-radius: 6px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.callout p { color: rgba(255,255,255,0.92); margin: 0; }

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--green-800) 0%, var(--green-900) 100%);
  color: white;
  border-radius: var(--radius);
  padding: 56px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: center;
  margin: 40px auto 0;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216,166,87,0.3), transparent 65%);
  right: -100px;
  bottom: -160px;
}
.cta-banner h2 { color: white; margin-bottom: 8px; }
.cta-banner p  { color: rgba(255,255,255,0.85); margin: 0; }
.cta-banner .btn-primary { background: var(--amber); color: var(--bark); }
.cta-banner .btn-primary:hover { background: #e8b568; color: var(--bark); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--green-900);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
}
.site-footer h4 {
  color: white;
  font-size: 0.92rem;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 14px;
}
.site-footer a {
  color: rgba(255,255,255,0.7);
  display: block;
  padding: 4px 0;
  font-size: 0.95rem;
}
.site-footer a:hover { color: var(--amber); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 40px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ---------- Form ---------- */
.form {
  background: white;
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--green-900);
  margin: 16px 0 6px;
}
.form input, .form select, .form textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--grey-300);
  font: inherit;
  background: var(--paper);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(58, 158, 110, 0.18);
}
.form textarea { min-height: 120px; resize: vertical; }
.form button { margin-top: 22px; width: 100%; justify-content: center; }

/* ---------- Page header ---------- */
.page-header {
  background: linear-gradient(160deg, var(--green-800) 0%, var(--green-900) 100%);
  color: white;
  padding: 72px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 30%, rgba(216,166,87,0.18), transparent 35%),
    radial-gradient(circle at 85% 70%, rgba(58,158,110,0.25), transparent 40%);
}
.page-header > .container { position: relative; }
.page-header h1 { color: white; }
.page-header .eyebrow { background: rgba(216,166,87,0.18); color: var(--amber); }
.page-header p { color: rgba(255,255,255,0.85); max-width: 720px; margin: 0 auto; font-size: 1.08rem; }

/* ---------- Misc ---------- */
.benefit-row {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--grey-100);
}
.benefit-row:last-child { border-bottom: none; }
.benefit-row .num-tag {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--green-700);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: 'Source Serif Pro', Georgia, serif;
  font-size: 1.1rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { padding: 56px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.reverse > :first-child { order: 0; }
  .feature-list { grid-template-columns: 1fr; }
  .cta-banner { grid-template-columns: 1fr; padding: 36px; text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    right: 16px;
    left: 16px;
    flex-direction: column;
    gap: 4px;
    background: white;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--grey-100);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }
}

@media (max-width: 560px) {
  section { padding: 56px 0; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; gap: 18px; }
  .callout { flex-direction: column; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .page-header { padding: 56px 0 40px; }
}