@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap");

:root {
  --green-deep: #14532d;
  --green-soft: #4ade80;
  --gray-500: #6b7280;
  --gray-200: #e5e7eb;
  --ink: #0f1c12;
  --bg: #ffffff;
  --max-width: 1120px;
  --radius: 18px;
  --shadow-soft: 0 20px 60px rgba(20, 83, 45, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  letter-spacing: 0.01em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 15% 10%, rgba(74, 222, 128, 0.12), transparent 55%),
    radial-gradient(1200px 700px at 85% 15%, rgba(20, 83, 45, 0.08), transparent 60%);
  z-index: -1;
}

img {
  max-width: 100%;
  display: block;
}

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

p {
  margin: 0 0 1.2rem;
  color: var(--gray-500);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6rem;
  color: var(--green-deep);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.4rem);
}

h3 {
  font-size: 1.4rem;
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 1.5rem;
  top: 1.5rem;
  width: auto;
  height: auto;
  padding: 0.8rem 1.2rem;
  background: var(--green-deep);
  color: #fff;
  border-radius: 999px;
  z-index: 10;
}

.site-header {
  padding: 0.4rem 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-deep);
}

.logo img {
  height: 320px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 1.4rem;
  font-weight: 500;
  color: var(--gray-500);
}

.nav-links a {
  position: relative;
  padding-bottom: 0.2rem;
}

.nav-links a[aria-current="page"] {
  color: var(--green-deep);
}

.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.2rem;
  height: 2px;
  background: var(--green-soft);
  border-radius: 999px;
}

.hero {
  padding: 1.4rem 0 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2rem;
  align-items: center;
}

.hero-text {
  grid-column: span 7;
}

.hero-card {
  grid-column: span 5;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2.4rem;
  box-shadow: var(--shadow-soft);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--green-deep);
  margin-bottom: 1.5rem;
}

.hero-tag span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green-soft);
  display: inline-block;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--green-deep);
  color: #fff;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(20, 83, 45, 0.18);
}

.button.secondary {
  background: transparent;
  border-color: var(--green-deep);
  color: var(--green-deep);
}

.section {
  padding: 4.5rem 0;
}

.section-title {
  margin-bottom: 2rem;
}

.section-intro {
  max-width: 680px;
}

.grid-2 {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.6rem;
}

.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: 0 12px 32px rgba(20, 83, 45, 0.06);
}

.card h3 {
  margin-bottom: 0.5rem;
}

.framework {
  background: rgba(20, 83, 45, 0.02);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.tree {
  position: relative;
  padding-left: 2.5rem;
}

.tree::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(20, 83, 45, 0.1), rgba(20, 83, 45, 0.35), rgba(20, 83, 45, 0.1));
  transform-origin: top;
  transform: scaleY(0.2);
  transition: transform 1s ease;
}

.tree-step {
  position: relative;
  padding: 0.2rem 0 1.8rem;
}

.tree-step:last-child {
  padding-bottom: 0;
}

.tree-dot {
  position: absolute;
  left: -2.5rem;
  top: 0.2rem;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--green-deep);
  display: grid;
  place-items: center;
}

.tree-dot::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green-soft);
}

.tree-label {
  font-weight: 600;
  color: var(--green-deep);
  margin-bottom: 0.3rem;
}

.tree-branch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--green-deep);
  font-weight: 700;
  margin-top: 0.4rem;
}

.tree-branch::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--green-soft);
}

.tree-list {
  margin: 0.4rem 0 1rem;
  padding-left: 1.2rem;
  color: var(--gray-500);
}

.tree-list li {
  margin-bottom: 0.35rem;
}

.tree-illustration img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.callout {
  border-left: 3px solid var(--green-soft);
  padding: 1.5rem 1.8rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(20, 83, 45, 0.06);
  color: var(--green-deep);
  font-weight: 600;
}

.footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
  font-size: 0.95rem;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  color: var(--green-deep);
  font-weight: 600;
}

.pill-list {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.pill {
  padding: 0.4rem 0.9rem;
  background: rgba(20, 83, 45, 0.08);
  color: var(--green-deep);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal.tree-grow.reveal-visible .tree::before {
  transform: scaleY(1);
}

.contact-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.contact-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.8rem;
  background: #fff;
}

.contact-card h3 {
  margin-bottom: 0.4rem;
}

.meta {
  font-size: 0.95rem;
  color: var(--gray-500);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-text,
  .hero-card {
    grid-column: auto;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 680px) {
  .section {
    padding: 3.5rem 0;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4rem;
  }
}