@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=Montserrat:wght@700;800;900&display=swap');

:root {
  --teal: #007967;
  --teal-dark: #004D40;
  --teal-light: #E8F5F2;
  --lime: #C9DA2B;
  --lime-light: #F4FACC;
  --lime-hover: #BCCD1E;
  --charcoal: #1C1C1C;
  --gray: #555555;
  --border: #D5D5D5;
  --white: #FFFFFF;
  --teal-hover: #006556;
  --teal-press: #00564A;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-logotype: 'Montserrat', 'DM Sans', sans-serif;
}

* { box-sizing: border-box; }

.icon {
  display: inline-block;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  vertical-align: middle;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--charcoal);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-hover); }

.dotted-teal-dark {
  background-image: radial-gradient(rgba(255,255,255,0.14) 1.1px, transparent 1.2px);
  background-size: 18px 18px;
}
.dotted-teal-light {
  background-image: radial-gradient(rgba(0,121,103,0.14) 1.1px, transparent 1.2px);
  background-size: 18px 18px;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAV */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: 76px;
  display: flex;
  align-items: center;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand img { height: 36px; width: 36px; object-fit: contain; }
.brand-name {
  font-family: var(--font-logotype);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--teal);
  line-height: 1;
}
.brand-name .lime { color: var(--lime-hover); }

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.desktop-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--charcoal);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn-order-desktop {
  display: flex;
  align-items: center;
  background: var(--teal);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 11px 22px;
  border-radius: 999px;
}
.hamburger {
  display: none;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.hamburger svg { width: 20px; height: 20px; color: var(--teal); }
.hamburger .icon-close { display: none; }
.hamburger.open .icon-menu { display: none; }
.hamburger.open .icon-close { display: block; }

.mobile-menu {
  position: sticky;
  top: 76px;
  z-index: 49;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 18px 24px;
  display: none;
  flex-direction: column;
  gap: 16px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--charcoal);
}
.mobile-menu .btn-order-mobile {
  text-align: center;
  background: var(--teal);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
}

@media (max-width: 900px) {
  .desktop-nav, .btn-order-desktop { display: none; }
  .hamburger { display: flex; }
}

/* HERO */
.hero {
  background: var(--teal-light);
  padding: 72px 24px 88px;
}
.hero .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 56px;
  align-items: center;
}
.hero-copy { flex: 1 1 480px; min-width: 320px; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--lime-light);
  color: #5c6b00;
  font-weight: 600;
  font-size: 13px;
  border-radius: 999px;
  padding: 7px 16px;
  margin-bottom: 22px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.75rem, 6vw, 5.25rem);
  line-height: 1.02;
  color: var(--teal-dark);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}
.hero h1 sup { font-size: 0.4em; vertical-align: super; }
.hero .subtitle {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  color: var(--charcoal);
  letter-spacing: 0.01em;
  margin: 0 0 10px;
}
.hero .tagline {
  font-family: var(--font-sans);
  font-weight: 300;
  font-style: italic;
  font-size: 17px;
  color: var(--gray);
  margin: 0 0 28px;
  max-width: 46ch;
}
.nitrogen-card {
  display: inline-block;
  background: var(--teal-dark);
  border: 1.5px solid var(--lime);
  border-radius: 16px;
  padding: 22px 28px;
  margin-bottom: 32px;
}
.nitrogen-card .label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 6px;
}
.nitrogen-card .value {
  font-family: var(--font-display);
  font-size: 56px;
  line-height: 1;
  color: var(--lime);
}
.nitrogen-card .caption {
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--teal);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 15px 30px;
  border-radius: 999px;
}
.btn-secondary {
  background: #fff;
  color: var(--teal);
  border: 1.5px solid var(--teal);
  font-weight: 600;
  font-size: 16px;
  padding: 15px 30px;
  border-radius: 999px;
}
.hero-visual { flex: 1 1 320px; min-width: 280px; max-width: 380px; display: flex; justify-content: center; }
.hero-frame {
  background: #0c0c0b;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  transform: rotate(-3deg);
  width: 100%;
  max-width: 340px;
  box-sizing: border-box;
}
.hero-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 737 / 1023;
  object-fit: contain;
  border-radius: 8px;
}

/* PROBLEM */
.problem {
  background: var(--teal-dark);
  padding: 96px 24px;
}
.problem .eyebrow {
  display: block;
  text-align: center;
  margin-bottom: 56px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.problem-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.14);
  border-left: 3px solid var(--lime);
  border-radius: 12px;
  padding: 28px;
}
.problem-card h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 22px;
  color: #fff;
  margin: 0 0 12px;
}
.problem-card p {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255,255,255,0.72);
  margin: 0;
}
.problem-summary { text-align: center; margin-top: 56px; }
.problem-summary p {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: #fff;
  margin: 0 0 12px;
}
.problem-summary svg { width: 26px; height: 26px; color: var(--lime); }

/* TECHNOLOGY */
.technology { background: #fff; padding: 96px 24px; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  color: var(--teal-dark);
  margin: 0 0 14px;
}
.section-head p {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 18px;
  line-height: 1.6;
  color: var(--gray);
  margin: 0;
}
.root-diagram {
  width: 100%;
  max-width: 780px;
  margin: 0 auto 56px;
  display: block;
  background: #EFE9DC;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
.root-diagram svg { width: 100%; height: auto; display: block; }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.tech-card {
  background: var(--teal-light);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.tech-card .icon-box {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.tech-card .icon-box svg { width: 20px; height: 20px; color: #fff; }
.tech-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--charcoal);
  margin: 0 0 8px;
  font-family: var(--font-sans);
}
.tech-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--gray);
  margin: 0;
}

/* RESEARCH */
.research { background: var(--teal-light); padding: 96px 24px; }
.research .section-head { max-width: 720px; }
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  margin: 0 auto 40px;
  max-width: 1100px;
}
.research-stat {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 24px;
}
.research-stat .value {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 40px;
  line-height: 1;
  color: var(--teal-dark);
  margin-bottom: 10px;
}
.research-stat .label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  color: var(--charcoal);
  margin-bottom: 8px;
}
.research-stat p {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--gray);
  margin: 0;
}
.research-citation {
  max-width: 900px;
  margin: 0 auto;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  text-align: center;
}

/* CIRCULAR ECONOMY */
.circular { background: #fff; padding: 96px 24px; border-top: 1px solid var(--border); }
.circular .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 56px;
  align-items: center;
}
.circular-copy { flex: 1 1 460px; min-width: 300px; }
.eyebrow-teal {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}
.circular-copy h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  color: var(--teal-dark);
  margin: 14px 0 20px;
  line-height: 1.15;
}
.circular-copy > p {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.65;
  color: var(--gray);
  margin: 0 0 24px;
  max-width: 52ch;
}
.circular-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}
.circular-facts .fact {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.circular-facts svg { width: 22px; height: 22px; color: var(--teal); }
.circular-facts p {
  font-size: 14px;
  font-weight: 500;
  color: var(--charcoal);
  margin: 12px 0 0;
}
.sdg-panel { flex: 1 1 280px; min-width: 260px; }
.sdg-panel-inner {
  background: var(--teal-light);
  border-radius: 16px;
  padding: 28px;
}
.sdg-panel-label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 16px;
}
.sdg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.sdg-tile {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  display: block;
}
.sdg-tile img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* BENEFITS */
.benefits { background: var(--teal); padding: 96px 24px; }
.benefits h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  color: #fff;
  text-align: center;
  margin: 0 0 48px;
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
}
.benefit-card {
  background: #fff;
  border-radius: 16px;
  padding: 26px 22px;
}
.benefit-card svg { width: 26px; height: 26px; color: var(--teal); }
.benefit-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--charcoal);
  margin: 14px 0 8px;
  font-family: var(--font-sans);
}
.benefit-card p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--gray);
  margin: 0;
}
.research-banner {
  margin-top: 40px;
  border: 1.5px solid var(--lime);
  border-radius: 16px;
  padding: 20px 28px;
  text-align: center;
  background: rgba(0,0,0,0.08);
}
.research-banner span {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  color: #fff;
}

/* USE CASES */
.use-cases { background: var(--teal-light); padding: 96px 24px; }
.use-cases .wrap { display: flex; flex-wrap: wrap; gap: 56px; }
.use-cases-copy { flex: 1 1 460px; min-width: 300px; }
.use-cases-copy h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  color: var(--teal-dark);
  margin: 0 0 24px;
  line-height: 1.15;
}
.use-cases-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.use-cases-list .item { display: flex; gap: 10px; align-items: flex-start; }
.use-cases-list svg { width: 20px; height: 20px; color: var(--teal); flex-shrink: 0; margin-top: 2px; }
.use-cases-list span { font-size: 15px; color: var(--charcoal); }
.use-cases-note {
  background: var(--teal-dark);
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 28px;
}
.use-cases-note p {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--lime);
  margin: 0;
}
.use-cases-visual {
  flex: 1 1 300px;
  min-width: 260px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
}
.spec-card {
  background: var(--teal-dark);
  border-radius: 14px;
  padding: 24px;
  color: #fff;
}
.spec-card p {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
  margin: 0;
}
.nafdac-card {
  background: #fff;
  border: 1.5px solid var(--lime);
  border-radius: 14px;
  padding: 24px;
}
.nafdac-card p {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--charcoal);
  margin: 0;
}

/* CTA BAR */
.cta-bar { background: var(--teal); padding: 44px 24px; }
.cta-bar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
}
.cta-bar p {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  color: #fff;
  margin: 0;
}
.btn-cta {
  background: var(--lime);
  color: var(--teal-dark);
  font-weight: 600;
  font-size: 16px;
  padding: 14px 30px;
  border-radius: 999px;
}

/* FOOTER */
.site-footer { background: var(--teal-dark); padding: 64px 24px 32px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand img { height: 38px; width: 38px; object-fit: contain; }
.footer-brand span {
  font-family: var(--font-logotype);
  font-weight: 800;
  font-size: 22px;
  color: #fff;
}
.footer-tagline {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,0.65);
  margin: 0;
  max-width: 280px;
}
.footer-col-label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 16px;
}
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 15px; color: rgba(255,255,255,0.85); }
.footer-col span { font-size: 15px; color: rgba(255,255,255,0.85); }
.footer-col span.dim { color: rgba(255,255,255,0.55); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.16);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom span:first-child { font-size: 13px; color: rgba(255,255,255,0.6); }
.footer-bottom span:last-child {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}