:root {
  --green-900: #173f35;
  --green-800: #205446;
  --green-700: #2f6f5e;
  --green-100: #eaf2ee;
  --sand: #f4efe5;
  --cream: #fbfaf6;
  --ink: #1e2925;
  --muted: #68756f;
  --white: #ffffff;
  --border: #dbe4df;
  --shadow: 0 20px 50px rgba(23, 63, 53, .10);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
}

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

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

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251,250,246,.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(219,228,223,.8);
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--green-900);
  color: var(--white);
  font-weight: 800;
  letter-spacing: .04em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: .95rem; }
.brand-text small { margin-top: 4px; color: var(--muted); }

.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a { font-size: .92rem; font-weight: 600; }
.main-nav a:not(.btn):hover { color: var(--green-700); }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 1.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--green-900);
  color: var(--white);
  font-weight: 700;
  border: 1px solid var(--green-900);
  transition: .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(23,63,53,.18); }
.btn-small { min-height: 40px; padding: 0 17px; }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.6); }
.btn-outline-dark { background: transparent; color: var(--green-900); }

.hero {
  position: relative;
  min-height: 690px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(rgba(19,49,42,.7), rgba(19,49,42,.72)),
    url("assets/tierra-fertil-recoleccion.jpeg") center/cover no-repeat;
  color: var(--white);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 840px;
  padding: 100px 0;
}
.eyebrow, .section-kicker {
  display: inline-block;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .78rem;
  font-weight: 800;
  color: var(--green-700);
}
.hero .eyebrow { color: #d6eadf; }

h1, h2 {
  font-family: "Playfair Display", serif;
  margin: 0;
  line-height: 1.08;
}
h1 { font-size: clamp(3rem, 7vw, 5.6rem); max-width: 900px; }
h2 { font-size: clamp(2.2rem, 4vw, 3.7rem); }

.hero p {
  max-width: 760px;
  font-size: 1.15rem;
  color: rgba(255,255,255,.9);
  margin: 24px 0 30px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .btn:first-child { background: var(--white); color: var(--green-900); border-color: var(--white); }

.section { padding: 100px 0; }
.muted { background: var(--green-100); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: start;
}

.lead { font-size: 1.18rem; line-height: 1.75; }
.intro p { margin-top: 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 42px;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(23,63,53,.05);
}
.card .icon { font-size: 2rem; margin-bottom: 14px; }
.card h3 { margin: 0 0 10px; }
.card p { color: var(--muted); margin-bottom: 0; }

.project-grid { align-items: center; }
.project-media img {
  min-height: 520px;
  width: 100%;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.tag {
  display: inline-block;
  margin-bottom: 18px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--sand);
  font-size: .76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.timeline { margin: 28px 0; }
.timeline div {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.timeline strong { color: var(--green-700); }
.text-link { color: var(--green-700); font-weight: 800; }

.water-section {
  background: var(--green-900);
  color: var(--white);
}
.narrow { max-width: 850px; }
.light, .light-kicker, .light-text { color: rgba(255,255,255,.86); }
.tag.light { background: rgba(255,255,255,.1); }
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 50px;
}
.steps div {
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 20px;
  padding: 24px;
  background: rgba(255,255,255,.05);
}
.steps span {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: grid; place-items: center;
  margin-bottom: 18px;
  background: var(--white);
  color: var(--green-900);
  font-weight: 800;
}
.steps strong, .steps small { display: block; }
.steps small { margin-top: 8px; color: rgba(255,255,255,.72); }

.transparency-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.transparency-list span {
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.cta { background: var(--sand); }
.cta-box {
  display: grid;
  grid-template-columns: 1.4fr .6fr;
  gap: 48px;
  align-items: center;
}
.cta-actions { display: grid; gap: 12px; }

.footer {
  background: #102f28;
  color: rgba(255,255,255,.85);
  padding: 54px 0 24px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}
.footer p { color: rgba(255,255,255,.55); }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.copyright {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 36px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  color: rgba(255,255,255,.5);
  font-size: .85rem;
}

@media (max-width: 950px) {
  .main-nav {
    position: absolute;
    top: 78px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 22px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .menu-toggle { display: block; }

  .grid-2, .cta-box { grid-template-columns: 1fr; gap: 36px; }
  .cards, .steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1160px); }
  .hero { min-height: 620px; }
  .hero-content { padding: 80px 0; }
  .section { padding: 76px 0; }
  .cards, .steps { grid-template-columns: 1fr; }
  .project-media img { min-height: 360px; }
  .footer-grid, .copyright { flex-direction: column; }
}