:root {
  color-scheme: light;
  --primary: #3f6f5e;
  --secondary: #8faf9a;
  --depth: #5e7f6a;
  --accent: #2f6f5e;
  --charcoal: #1f2a26;
  --off-white: #f5f7f6;
  --shadow: 0 24px 60px rgba(31, 42, 38, 0.12);
}

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

body {
  font-family: "Source Sans 3", sans-serif;
  background: var(--off-white);
  color: var(--charcoal);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
.button,
.logo {
  font-family: "Inter", sans-serif;
}

main {
  display: flex;
  flex-direction: column;
  gap: 5rem;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(245, 247, 246, 0.9);
  border-bottom: 1px solid rgba(63, 111, 94, 0.12);
  z-index: 10;
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  font-weight: 700;
  font-size: 1.4rem;
  display: flex;
  gap: 0.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(120deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  color: var(--primary);
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-weight: 500;
  color: var(--depth);
}

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

.button {
  border: none;
  border-radius: 999px;
  padding: 0.75rem 1.6rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(63, 111, 94, 0.2);
}

.button.primary {
  background: var(--primary);
  color: white;
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.button.ghost {
  background: transparent;
  border: 1px solid rgba(63, 111, 94, 0.3);
  color: var(--primary);
}

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4.5rem 2rem 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2.5rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--depth);
  margin-bottom: 1rem;
  font-weight: 600;
}

.subhead {
  font-size: 1.1rem;
  margin-bottom: 1.8rem;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  justify-content: center;
}

.trust-bar {
  border-top: 1px solid rgba(63, 111, 94, 0.12);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  color: var(--depth);
  align-items: center;
}

.trust-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem 1.5rem;
  font-weight: 600;
  width: min(100%, 720px);
  text-align: center;
}

section {
  padding: 0 2rem;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: 0.75rem;
}

.problem {
  max-width: 1100px;
  margin: 0 auto;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.pillar {
  background: white;
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(31, 42, 38, 0.08);
  text-align: center;
  font-weight: 600;
}

.problem-tagline {
  text-align: center;
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--primary);
}

.solution {
  background: linear-gradient(180deg, rgba(143, 175, 154, 0.15), rgba(245, 247, 246, 0.9));
  padding: 4rem 2rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(31, 42, 38, 0.08);
}

.card h3 {
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.how {
  max-width: 1100px;
  margin: 0 auto;
}

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.steps li {
  background: white;
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid rgba(63, 111, 94, 0.15);
}

.steps span {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--depth);
  font-weight: 600;
}

.steps h3 {
  margin: 0.75rem 0;
}

.use-cases {
  max-width: 1100px;
  margin: 0 auto;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.use-case-grid div {
  background: white;
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid rgba(63, 111, 94, 0.08);
}

.use-case-grid h3 {
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.differentiator {
  max-width: 1100px;
  margin: 0 auto;
}

.differentiator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.differentiator-grid div {
  background: white;
  border-radius: 18px;
  padding: 1.5rem;
  border: 1px solid rgba(63, 111, 94, 0.12);
  font-weight: 600;
  color: var(--depth);
}

.cta {
  max-width: 1100px;
  margin: 0 auto 5rem;
  background: var(--primary);
  color: white;
  padding: 3rem;
  border-radius: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
}

.cta p {
  max-width: 540px;
  color: rgba(245, 247, 246, 0.85);
}

.footer {
  background: var(--charcoal);
  color: white;
  padding: 4rem 2rem;
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.footer .logo {
  color: white;
  background: linear-gradient(120deg, #ffffff, var(--secondary));
  -webkit-background-clip: text;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
}

.footer-links h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  color: rgba(245, 247, 246, 0.7);
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: white;
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media (max-width: 600px) {
  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .button {
    flex: 1 1 200px;
  }

  .cta {
    padding: 2.5rem;
  }
}